styles.css

:root {
  /* Premium Palette - Ultra Clean & Cold */
  --bg-main: #f1f5f9;
  --bg-app-shell: #e2e8f0;
  --surface: rgba(255, 255, 255, 0.9);
  --surface-solid: #ffffff;
  --accent: #2563eb;
  --accent-soft: rgba(37, 99, 235, 0.05);
  --accent-glow: rgba(37, 99, 235, 0.1);
  --text-main: #0f172a;
  --text-muted: #475569;
  --line-light: rgba(203, 213, 225, 0.4);
  --line-strong: #cbd5e1;
  
  /* Advanced Geometry */
  --radius-xl: 24px;
  --radius-lg: 18px;
  --radius-md: 12px;
  
  /* Deep, Multi-layered Shadows */
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.03), 0 2px 4px -2px rgba(0, 0, 0, 0.03);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -4px rgba(0, 0, 0, 0.03);
  --shadow-premium: 0 20px 40px -12px rgba(15, 23, 42, 0.08), 0 0 0 1px rgba(15, 23, 42, 0.02);
  --shadow-glow: 0 0 25px rgba(59, 130, 246, 0.12);
}

* { 
  box-sizing: border-box; 
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html, body { 
  margin: 0; 
  padding: 0; 
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  font-family: "Outfit", "Inter", system-ui, -apple-system, sans-serif;
  color: var(--text-main);
  background: #ffffff; /* Clean white base */
  line-height: 1.6;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: 
    url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
  opacity: 0.008; /* Further reduced noise to prevent color shifting */
  z-index: 1000;
}

a { color: inherit; text-decoration: none; }
.container { width: min(1800px, 96%); margin: 0 auto; }

/* Modern Rendering Optimization: Content-Visibility for non-hero sections */
.section-deferred,
.faq-section,
.site-footer,
.tutorials-list,
.tutorial-grid,
.news-grid,
.kb-grid,
.kb-terms-grid,
.kb-faq-list,
.cv-auto {
  content-visibility: auto;
  contain-intrinsic-size: 1px 400px;
}


.header-stack {
  position: sticky;
  top: 0;
  z-index: 40;
}

.header-stack .topbar {
  position: relative;
  top: auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 2px solid var(--line-strong);
}

.site-notice {
  position: relative;
  z-index: 1001;
  background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(30, 58, 138, 0.25);
}

.site-notice-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 8px 48px;
  gap: 16px;
}

.site-notice-text {
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.site-notice-link {
  color: #fff !important; /* Force high contrast white */
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 3px;
  opacity: 0.95;
}

.site-notice-link:hover {
  opacity: 1;
  color: #fff !important;
}

.site-notice-text {
  font-size: 0.95rem !important; /* 稍微缩小一点使其更精致 */
  font-weight: 400 !important; /* 标准细体 */
  letter-spacing: -0.02em !important; /* 收紧字间距 */
  color: #ffffff !important;
  text-shadow: none !important;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.is-dismissed {
  display: none !important;
}

.site-notice-close {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1.2rem;
  z-index: 10;
}

/* Cookie / Consent Banner - Zero-CLS Premium */
#cookie-consent, .cookie-consent {
  position: fixed !important;
  bottom: 24px !important;
  left: 24px !important;
  width: 340px !important;
  max-width: calc(100vw - 32px) !important;
  background: rgba(15, 23, 42, 0.95) !important; /* Slate 900 with opacity */
  backdrop-filter: blur(12px) !important;
  -webkit-backdrop-filter: blur(12px) !important;
  color: #f1f5f9 !important;
  border: 1px solid rgba(255, 255, 255, 0.12) !important;
  border-radius: 16px !important;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 10px 10px -5px rgba(0, 0, 0, 0.2) !important;
  padding: 20px !important;
  z-index: 10000 !important;
  font-size: 14px !important;
  opacity: 0 !important;
  pointer-events: none !important;
  transform: translateY(20px) !important;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease !important;
}

#cookie-consent.is-visible, .cookie-consent.is-visible {
  opacity: 1 !important;
  pointer-events: auto !important;
  transform: translateY(0) !important;
}

#cookie-consent.is-dismissed, .cookie-consent.is-dismissed {
  opacity: 0 !important;
  pointer-events: none !important;
  transform: translateY(20px) !important;
  display: none !important;
}

@media (max-width: 480px) {
  #cookie-consent, .cookie-consent {
    bottom: 16px !important;
    left: 16px !important;
    right: 16px !important;
    width: auto !important;
    max-width: none !important;
    padding: 16px !important;
  }
}

.cookie-consent-text {
  margin: 0 0 16px 0 !important;
  line-height: 1.6 !important;
  color: #cbd5e1 !important;
}

.cookie-consent-text a {
  color: #60a5fa !important;
  text-decoration: underline !important;
}

.cookie-consent-close {
  position: absolute !important;
  top: 12px !important;
  right: 12px !important;
  background: transparent !important;
  border: none !important;
  color: #94a3b8 !important;
  width: 24px !important;
  height: 24px !important;
  cursor: pointer !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  font-size: 18px !important;
  transition: color 0.2s !important;
}

.cookie-consent-close:hover {
  color: #f1f5f9 !important;
}

.cookie-consent-actions {
  display: flex !important;
  gap: 8px !important;
  width: 100% !important;
}

.btn-cookie-primary, .btn-cookie-outline {
  flex: 1 !important;
  padding: 10px 12px !important;
  border-radius: 10px !important;
  font-size: 13px !important;
  font-weight: 600 !important;
  cursor: pointer !important;
  transition: all 0.2s ease !important;
  border: none !important;
  text-align: center !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
}

.btn-cookie-primary {
  background: #1d4ed8 !important;
  color: #ffffff !important;
}

.btn-cookie-primary:hover {
  background: #1e40af !important;
  transform: translateY(-1px) !important;
}

.btn-cookie-outline {
  background: rgba(255, 255, 255, 0.05) !important;
  color: #f1f5f9 !important;
  border: 1px solid rgba(255, 255, 255, 0.1) !important;
}

.btn-cookie-outline:hover {
  background: rgba(255, 255, 255, 0.1) !important;
  border-color: rgba(255, 255, 255, 0.2) !important;
}

/* Customize button active state */
.btn-cookie-outline.is-active {
  background: rgba(59, 130, 246, 0.15) !important;
  border-color: rgba(59, 130, 246, 0.4) !important;
  color: #93c5fd !important;
}

/* ── Cookie Preferences Panel ─────────────────────────── */
.cookie-prefs-panel {
  max-height: 0 !important;
  overflow: hidden !important;
  opacity: 0 !important;
  margin-top: 0 !important;
  padding: 0 !important;
  border-top: none !important;
  transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1),
              opacity 0.25s ease,
              margin-top 0.35s ease,
              padding 0.35s ease !important;
}

.cookie-prefs-panel.is-open {
  max-height: 300px !important;
  opacity: 1 !important;
  margin-top: 16px !important;
  padding-top: 16px !important;
  border-top: 1px solid rgba(255, 255, 255, 0.08) !important;
}

.cookie-pref-row {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  padding: 8px 0 !important;
}

.cookie-pref-label {
  font-size: 13px !important;
  font-weight: 500 !important;
  color: #cbd5e1 !important;
}

/* ── iOS-style Toggle Switch ──────────────────────────── */
.cookie-toggle {
  position: relative !important;
  display: inline-block !important;
  width: 44px !important;
  height: 24px !important;
  flex-shrink: 0 !important;
  cursor: pointer !important;
}

.cookie-toggle input {
  opacity: 0 !important;
  width: 0 !important;
  height: 0 !important;
  position: absolute !important;
}

.cookie-toggle-slider {
  position: absolute !important;
  inset: 0 !important;
  background: rgba(255, 255, 255, 0.12) !important;
  border-radius: 24px !important;
  transition: background 0.25s ease !important;
}

.cookie-toggle-slider::before {
  content: "" !important;
  position: absolute !important;
  left: 3px !important;
  top: 3px !important;
  width: 18px !important;
  height: 18px !important;
  background: #f1f5f9 !important;
  border-radius: 50% !important;
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1) !important;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3) !important;
}

.cookie-toggle input:checked + .cookie-toggle-slider {
  background: #3b82f6 !important;
}

.cookie-toggle input:checked + .cookie-toggle-slider::before {
  transform: translateX(20px) !important;
}

.cookie-toggle input:focus-visible + .cookie-toggle-slider {
  outline: 2px solid #93c5fd !important;
  outline-offset: 2px !important;
}

/* Save Preferences button inside panel */
.cookie-save-prefs {
  width: 100% !important;
  margin-top: 12px !important;
  padding: 10px 12px !important;
  border-radius: 10px !important;
  font-size: 13px !important;
  font-weight: 600 !important;
  cursor: pointer !important;
  border: none !important;
  text-align: center !important;
}

.site-notice-close {
  position: absolute !important;
  bottom: 8px !important;
  right: 12px !important;
  width: 20px !important;
  height: 20px !important;
  border-radius: 50% !important;
  background: rgba(255, 255, 255, 0.15) !important;
  color: #f8fafc !important;
  font-size: 14px !important;
  line-height: 1 !important;
  cursor: pointer !important;
  border: none !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  transition: background 0.18s ease, color 0.18s ease !important;
  z-index: 10 !important;
}

.site-notice-close:hover {
  background: rgba(255, 255, 255, 0.3) !important;
  color: #fff !important;
}

.site-notice-close:focus-visible {
  outline: 2px solid #fff !important;
  outline-offset: 2px !important;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--line-light);
  transition: all 0.3s ease;
}

.topbar-inner {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  position: relative;
  z-index: 10;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0 !important; /* 零间距贴合，消除距离过远的问题 */
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

/* 彻底重塑 GC 徽标为高逼格的 Gstar 椭圆圈线框 */
.brand-badge {
  width: auto !important;
  height: auto !important;
  min-width: 0 !important;
  padding: 2px 10px !important; /* 精致椭圆框内边距 */
  border: 2px solid currentColor !important; /* 继承色线框，自适应深浅顶栏 */
  border-radius: 999px !important; /* 椭圆圈线框 */
  background: transparent !important; /* 透明背景 */
  box-shadow: none !important; /* 丢掉发光阴影 */
  font-size: 0 !important; /* 隐藏 GC */
  line-height: 0 !important; /* 隐藏 GC */
  color: transparent !important; /* 彻底隐形 GC，防止移动端残留 */
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  margin-right: 4px !important; /* 让椭圆圈与后面的文字保持刚好 4px 黄金间距 */
}

.brand-badge::after {
  content: "Gstar" !important;
  font-size: 1.15rem !important;
  font-weight: 900 !important;
  color: currentColor !important; /* 恢复继承前景色 */
  text-transform: none !important;
  line-height: 1.2 !important;
  font-family: "Outfit", "Inter", sans-serif !important;
}

/* 改造后面的 span 元素，使其仅显示 cad 并且加上下划线 */
.brand span:not(.brand-badge) {
  font-size: 0 !important; /* 隐藏原有的 Gstarcademy */
  display: inline-block !important;
  line-height: 1 !important;
  color: inherit !important;
}

.brand span:not(.brand-badge)::after {
  content: "cad" !important;
  font-size: 1.15rem !important;
  font-weight: 900 !important;
  color: inherit !important;
  text-transform: none !important;
  line-height: 1 !important;
  text-decoration: underline !important; /* cad 三个字加下划线 */
  text-underline-offset: 3px !important; /* 下划线精致偏移量 */
  font-family: "Outfit", "Inter", sans-serif !important;
}

/* 利用 brand 的伪元素在最末尾拼装上不带下划线的 emy */
.brand::after {
  content: "emy" !important;
  font-size: 1.15rem !important;
  font-weight: 900 !important;
  color: inherit !important;
  text-transform: none !important;
  line-height: 1 !important;
  font-family: "Outfit", "Inter", sans-serif !important;
  display: inline-block !important;
}

.nav { display: flex; align-items: center; gap: 4px; }

/* nav-header + nav-close only exist for the mobile drawer; hidden on desktop. */
.nav-header { display: none; }

/* Hamburger menu button — 44x44 touch target (Apple HIG min) */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: transparent;
  border: none;
  cursor: pointer;
  transition: background 0.2s ease;
  padding: 0;
  z-index: 1001;
  order: 2;
  flex-shrink: 0;
  /* prevent 300ms tap delay + double-tap zoom on iOS */
  touch-action: manipulation;
  -webkit-tap-highlight-color: rgba(59,71,217,0.15);
  /* allow the click hit area to extend slightly beyond the icon on phones */
  margin: 0;
}

.hamburger:hover, .hamburger:active {
  background: var(--accent-soft);
}

.hamburger-line {
  width: 22px;
  height: 2.5px;
  background: var(--text-main);
  margin: 2.5px 0;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: 2px;
  display: block;
  pointer-events: none;
}

.hamburger.active .hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.active .hamburger-line:nth-child(2) {
  opacity: 0;
}

.hamburger.active .hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-link {
  padding: 8px 16px;
  border-radius: 10px;
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 600;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link:hover {
  color: var(--accent);
  background: var(--accent-soft);
}

.nav-link.active {
  color: #fff;
  background: var(--text-main);
  box-shadow: var(--shadow-md);
}

/* Compact Rounded Header - For Main Content Area */
.hero-page {
  display: block !important;
  width: 100% !important;
  min-height: 100px !important;
  padding: 32px 40px !important;
  background: #0f172a !important; /* Deep Navy Background */
  border-radius: 20px !important;
  margin-bottom: 24px !important;
  position: relative !important;
  color: #ffffff !important;
  box-sizing: border-box !important;
}

.hero-page-header-flex {
  display: flex !important;
  justify-content: space-between !important;
  align-items: center !important;
  gap: 24px !important;
  width: 100% !important;
}

.hero-page-content {
  flex: 1 !important;
}

.hero-page-actions {
  flex: 0 0 auto !important;
  display: flex !important;
  flex-direction: column !important;
  align-items: flex-end !important;
  text-align: right !important;
}

.hero-page .hero-page-eyebrow {
  color: #60a5fa !important;
  font-size: 10px !important;
  font-weight: 800 !important;
  text-transform: uppercase !important;
  letter-spacing: 0.12em !important;
  margin-bottom: 6px !important;
}

.hero-page .hero-page-title {
  font-size: 28px !important;
  font-weight: 800 !important;
  color: #ffffff !important;
  margin: 0 !important;
}

.hero-page .hero-page-lead {
  font-size: 14px !important;
  color: #94a3b8 !important;
  margin-top: 4px !important;
}

.hero-page .stats-row {
  display: flex !important;
  gap: 20px !important;
  color: #64748b !important;
  font-size: 12px !important;
  justify-content: flex-end !important;
}

/* News page layout alignment - natural container flow */


.hero-page .search-row {
  width: 100% !important;
  height: 42px !important;
  background: #ffffff !important;
  border-radius: 8px !important;
  overflow: hidden !important;
}

.hero-page .stats-row {
  display: flex !important;
  gap: 12px !important;
  color: #64748b !important;
  font-size: 11px !important;
}

.hero-page .stats-item strong {
  color: #94a3b8 !important;
}

.hero-page::before, .hero-page::after {
  display: none !important;
}

.hero-page::before, .hero-page::after {
  display: none !important;
}

/* Glass Card System */
.card-glass {
  background: rgba(255, 255, 255, 0.7) !important;
  backdrop-filter: blur(10px) !important;
  border: 1px solid rgba(255, 255, 255, 0.5) !important;
  border-radius: 20px !important;
  padding: 24px !important;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

.card-glass:hover {
  transform: translateY(-4px) !important;
  background: rgba(255, 255, 255, 0.9) !important;
  box-shadow: 0 20px 40px -12px rgba(15, 23, 42, 0.1) !important;
  border-color: var(--accent) !important;
}





.kb-graph-stage--immersive {
  height: clamp(600px, 80vh, 900px);
  background: var(--bg-app-shell);
  border-radius: var(--radius-xl);
  overflow: hidden;
  position: relative;
  box-shadow: inset 0 0 40px rgba(0, 0, 0, 0.02);
}

.kb-graph-svg-el {
  cursor: grab;
  width: 100%;
  height: 100%;
}

.kb-graph-svg-el:active {
  cursor: grabbing;
}

.kb-graph-node-label {
  font-family: "Outfit", sans-serif;
  pointer-events: none;
  user-select: none;
  fill: var(--text-main);
  text-shadow: none;
}

.kb-graph-tooltip {
  position: absolute;
  z-index: 2000;
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(8px);
  color: #fff;
  padding: 14px;
  border-radius: 12px;
  pointer-events: none;
  font-size: 13px;
  max-width: 240px;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: opacity 0.2s ease;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  border: 1px solid #cfdcff;
  background: #ffffff;
  border-radius: 999px;
  padding: 7px 12px;
  color: #5f6f97;
  font-size: 12px;
  margin-bottom: 14px;
}

h1, h2, h3, h4, p { margin: 0; }

.hero-title {
  font-size: clamp(32px, 4vw, 56px);
  line-height: 1.03;
  letter-spacing: -0.02em;
  color: #0f1728;
  max-width: 940px;
  text-wrap: balance;
}

.hero-sub {
  margin-top: 14px;
  max-width: 860px;
  color: #5c667a;
  line-height: 1.72;
}

.search-row {
  margin-top: 24px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
}

input[type="text"], select {
  width: 100%;
  border: 1px solid #d3d9e4;
  border-radius: 12px;
  padding: 12px 14px;
  color: #1f2937;
  background: #fff;
  outline: none;
}

input::placeholder { color: #8a9abb; }

.btn {
  border: 1px solid #d3d9e4;
  border-radius: 12px;
  padding: 12px 16px;
  background: #fff;
  color: #1f2937;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, opacity 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
  background: #f7f9fc;
  box-shadow: 0 10px 18px rgba(15, 23, 42, 0.1);
}

.btn-primary {
  background: linear-gradient(135deg, #111827, #374151);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 14px 24px rgba(17, 24, 39, 0.32);
}

.chips {
  margin-top: 14px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border: 1px solid #d7dde7;
  border-radius: 999px;
  color: #4f5a70;
  background: #f5f7fa;
  font-size: 12px;
}

.section { padding: 20px 0 8px; }

.section-head {
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.section-title { font-size: 24px; letter-spacing: -0.01em; color: #1b2747; }
.section-note { font-size: 14px; color: #607196; }

.grid { display: grid; gap: 12px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  border: 1px solid #dfe4ec;
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(248, 250, 253, 0.94));
  padding: 18px;
  box-shadow: var(--shadow);
  transition: transform 0.22s ease, box-shadow 0.24s ease, border-color 0.2s ease;
  content-visibility: auto;
  contain-intrinsic-size: auto 250px;
}

.card:hover {
  transform: translateY(-2px);
  border-color: #cfd6e3;
  box-shadow: 0 18px 30px rgba(15, 23, 42, 0.12);
}

.card h3 { font-size: 18px; margin-bottom: 8px; color: #1c2a4f; }
.meta { color: #5f6f91; font-size: 13px; line-height: 1.62; }
.seo-link-list {
  margin: 10px 0 0;
  padding-left: 18px;
  display: grid;
  gap: 6px;
}

.seo-link-list a {
  color: #274888;
  text-decoration: underline;
  text-underline-offset: 2px;
}



.list { display: grid; gap: 12px; }

.tutorial-item {
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(8px);
  overflow: hidden;
  display: grid;
  grid-template-columns: 280px 1fr;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
  margin-bottom: 16px;
}

.tutorial-item:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 20px 40px -12px rgba(15, 23, 42, 0.12);
  border-color: var(--accent);
}

.thumb {
  min-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  background: #1e293b; /* Slate 800 */
  position: relative;
}

.thumb.thumb--cover {
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  color: transparent;
  font-size: 0;
}

.thumb.thumb--cover::after {
  display: none; /* No overlay needed for direct image covers */
}

.item-body { padding: 16px; display: grid; gap: 10px; }
.item-tags, .actions { display: flex; flex-wrap: wrap; gap: 8px; }

.tag {
  font-size: 12px;
  padding: 5px 8px;
  border: 1px solid #d7dde7;
  border-radius: 999px;
  color: #4f5c74;
  background: #f5f7fb;
}

.layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 14px;
}

.panel {
  border: 1px solid #dfe4ec;
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(248, 250, 253, 0.94));
  padding: 16px;
  box-shadow: var(--shadow);
}

.panel-title { font-size: 16px; margin-bottom: 12px; color: #1f2d53; }

.filter-group {
  border-top: 1px dashed #dbe5ff;
  padding: 10px 0;
}

.filter-group:first-child { border-top: 0; padding-top: 0; }
.filter-group h4 { margin: 0 0 8px; font-size: 14px; color: #314168; }



.kpi {
  border: 1px solid #dfe4ec;
  border-radius: var(--radius-sm);
  background: #fff;
  padding: 14px;
}

.kpi strong { display: block; font-size: 24px; margin-bottom: 6px; color: #314f99; }

.timeline { display: grid; gap: 10px; }

.timeline-item {
  border: 1px solid #dfe4ec;
  border-radius: var(--radius-sm);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(248, 250, 253, 0.94));
  padding: 13px;
}

.footer {
  margin-top: 36px;
  border-top: 1px solid rgba(59, 130, 246, 0.14);
  padding: 28px 0 40px;
  color: rgba(203, 213, 225, 0.9);
  font-size: 13px;
  background:
    radial-gradient(ellipse 85% 55% at 50% -8%, rgba(30, 64, 175, 0.34), transparent 58%),
    radial-gradient(ellipse 70% 45% at 100% 60%, rgba(15, 23, 42, 0.9), transparent 52%),
    radial-gradient(ellipse 60% 40% at 0% 70%, rgba(15, 23, 42, 0.85), transparent 48%),
    linear-gradient(180deg, #020617 0%, #0a1628 42%, #071018 100%);
  box-shadow:
    inset 0 1px 0 rgba(96, 165, 250, 0.08),
    inset 0 0 80px rgba(29, 78, 216, 0.06);
}

.site-notice {
  position: relative;
  z-index: 101;
  background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
  color: #fff;
  box-shadow: 0 4px 12px rgba(30,58,138,.25);
}

.site-notice-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 8px 48px;
  gap: 16px;
}

.site-notice-text {
  font-size: 0.875rem !important;
  font-weight: 400;
  color: #fff !important;
  text-shadow: none;
  letter-spacing: -0.01em;
}

.site-notice-link {
  color: #fff !important;
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 3px;
  opacity: .95;
}

.site-notice-link:hover { opacity:1; }

.site-notice-close {
  position: absolute;
  right:12px;
  top:50%;
  transform:translateY(-50%);
  width:30px;height:30px;
  border-radius:50%;
  background:rgba(255,255,255,.2);
  color:#fff;
  border:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight:bold;
  font-size:1.2rem;
  z-index:10;
}

.footer.site-footer {
  margin-top: 80px;
  background: #020617;
  padding: 40px 0 12px;
  color: #94a3b8;
  position: relative;
  overflow: hidden;
}

.footer.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, rgba(59, 130, 246, 0.3), transparent);
}

.site-footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 36px;
  margin-bottom: 0;
}

.site-footer-tagline {
  font-size: 1.5rem;
  font-weight: 900;
  color: #fff;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.site-footer-desc {
  font-size: 0.9rem;
  line-height: 1.6;
  color: #64748b;
}

.site-footer-heading {
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #cbd5e1;
  margin-bottom: 24px;
}

.site-footer-links {
  list-style: none;
  padding: 0;
}

.site-footer-links li {
  margin-bottom: 12px;
}

.site-footer-links a {
  color: #94a3b8;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.2s ease;
}

.site-footer-links a:hover {
  color: #fff;
  padding-left: 4px;
}

.site-footer-bottom {
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  text-align: center;
  font-size: 0.8rem;
  color: #475569;
  padding-bottom: 0;
  margin-bottom: 0;
}
.site-footer-bottom p {
  margin: 0;
}

@media (max-width: 900px) {
  .site-footer-inner {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 520px) {
  .site-footer-inner {
    grid-template-columns: 1fr;
  }
}

.legal-box {
  border: 1px solid #ffd2de;
  border-radius: var(--radius-sm);
  background: #fff5f8;
  padding: 14px;
}

.pill-ok { color: #2f6b57; border-color: #ccddd5; background: #eff6f2; }
.pill-warn { color: #8a6300; border-color: #ffe1a0; background: #fff6dd; }
.pill-danger { color: #a73c52; border-color: #ffc9d5; background: #fff0f4; }







@media (max-width: 1024px) {
  .layout { grid-template-columns: 1fr; }
  .grid-3, .kpis, .hero-split { grid-template-columns: repeat(2, 1fr); }
}

.kb-app {
  display: grid;
  grid-template-columns: 280px 1fr;
  min-height: calc(100vh - 64px);
  background: var(--bg-app-shell);
  position: relative;
}

.kb-rail {
  background: rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(12px);
  border-right: 1px solid var(--line-light);
  overflow-y: auto;
  position: sticky;
  top: 64px;
  height: calc(100vh - 64px);
  padding: 24px 16px;
  transition: all 0.3s ease;
}

.kb-stage {
  display: flex;
  flex-direction: column;
  min-width: 0;
  background: transparent;
}

.kb-stage-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 32px;
}

@media (max-width: 780px) {
  .topbar-inner {
    align-items: center;
    justify-content: space-between;
    flex-direction: row;
    padding: 8px 0;
    min-height: 64px;
  }
  
  .brand {
    order: 1;
    flex-shrink: 0;
  }
  
  .hamburger {
    display: flex;
    order: 3;
  }
  
  .nav {
    position: fixed;
    top: 80px;
    left: 16px;
    right: 16px;
    background: #ffffff;
    border-radius: 16px;
    flex-direction: column;
    align-items: flex-start;
    padding: 0;
    gap: 0;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
    display: none;
    opacity: 0;
    transform: translateY(-20px);
    pointer-events: none;
    overflow: hidden;
  }
  
  .nav.active {
    display: flex;
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
  
  .nav-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid #f1f5f9;
    width: 100%;
  }
  
  .nav-header .brand {
    margin: 0;
  }
  
  .nav-close {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: transparent;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.2s ease;
  }
  
  .nav-close:hover {
    background: #f1f5f9;
  }
  
  .nav-close-icon {
    font-size: 24px;
    color: #64748b;
    line-height: 1;
  }
  
  .nav-link {
    width: 100%;
    padding: 12px 20px;
    font-size: 1.125rem;
    font-weight: 700;
    color: #1e293b;
    border-radius: 0;
    transition: background 0.2s ease;
  }
  
  .nav-link:hover {
    background: #f8fafc;
    color: #1e293b;
  }
  
  .nav-link.active {
    background: #0f172a;
    color: #ffffff;
  }
  .hero { padding-top: 24px; }
  .search-row, .grid-3, .grid-2, .kpis, .tutorial-item, .hero-split, .kb-grid {
    grid-template-columns: 1fr !important; /* guarantee single-column on phones */
  }
  .thumb { min-height: 140px; }

  
  /* Overlay for mobile menu */
  .nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    z-index: 999;
  }
  
  .nav-overlay.active {
    opacity: 1;
    visibility: visible;
  }
  
  /* Additional mobile optimizations */
  .container {
    width: 94%;
  }
  
  /* Hero section mobile */
  .hero-premium {
    padding: 40px 0 60px;
  }
  
  .hero-title-premium {
    font-size: 1.8rem;
  }
  
  .hero-sub-premium {
    font-size: 1rem;
  }
  
  /* Site notice mobile */
  .site-notice-inner {
    padding: 12px 16px;
  }
  
  .site-notice-text {
    font-size: 0.9rem;
  }
  
  /* Card padding mobile */
  .card {
    padding: 16px;
  }
  
  /* Footer mobile */
  .site-footer-inner {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 40px 0;
  }
  
  /* Hero search mobile */
  .hero-search-shell {
    padding: 12px;
  }
  
  .search-row {
    gap: 8px;
  }
  
  .search-row input {
    min-height: 48px;
    font-size: 1rem;
  }
  
  /* Buttons mobile */
  .btn {
    padding: 12px 20px;
  }
  
  /* Tutorial item mobile */
  .tutorial-item {
    grid-template-columns: 1fr;
  }
  
  .tutorial-item .thumb {
    min-height: 120px;
  }
  
  /* KB app mobile */
  .kb-app {
    grid-template-columns: 1fr;
  }
  
  .kb-rail {
    position: relative;
    top: auto;
    height: auto;
    max-height: 300px;
  }
}

/* Extra small devices */
@media (max-width: 480px) {
  .brand span {
    font-size: 1rem;
  }
  
  .brand-badge {
    width: 32px;
    height: 32px;
    font-size: 11px;
  }
  
  .hero-title-premium {
    font-size: 1.6rem;
  }
  
  .hero-sub-premium {
    font-size: 0.95rem;
  }
  
  .site-notice-text {
    font-size: 0.85rem;
  }
}

.kb-sidebar-taxonomy-note {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 4px;
  line-height: 1.4;
}

.kb-index-box {
  background: rgba(255, 255, 255, 0.6);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 24px;
  border: 1px solid var(--line-light);
}

.kb-index-title {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 12px;
  font-weight: 700;
}

.kb-index-link {
  display: block;
  padding: 10px 12px;
  margin-bottom: 4px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-main);
  transition: all 0.2s ease;
}

.kb-index-link:hover {
  background: rgba(255, 255, 255, 0.8);
  color: var(--accent);
  transform: translateX(4px);
}

.kb-index-link.active {
  background: var(--surface-solid);
  color: var(--accent);
  box-shadow: var(--shadow-sm);
}

.kb-nav-group {
  margin-bottom: 20px;
}

.kb-nav-toggle {
  display: flex;
  align-items: center;
  width: 100%;
  padding: 8px 12px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-muted);
  background: none;
  border: none;
  cursor: pointer;
  letter-spacing: 0.05em;
}

.kb-nav-links {
  margin-top: 8px;
}

.kb-side-link {
  display: block;
  padding: 8px 12px;
  border-radius: 8px;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  transition: all 0.2s ease;
  border-left: 2px solid transparent;
}

.kb-side-link:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.5);
  padding-left: 16px;
}

.kb-side-link.active {
  color: var(--accent);
  font-weight: 700;
  background: var(--accent-soft);
  border-left-color: var(--accent);
}

.kb-subnav {
  display: flex;
  gap: 8px;
  padding: 16px 32px;
  background: rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line-light);
  position: sticky;
  top: 0;
  z-index: 50;
}

.kb-subnav-link {
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: all 0.2s ease;
}

.kb-subnav-link:hover {
  background: rgba(255, 255, 255, 0.8);
  color: var(--text-main);
}

.kb-subnav-link.active {
  background: var(--text-main);
  color: #fff;
}

.kb-main--portal {
  max-width: 1100px;
  margin: 0 auto;
  padding: 48px 32px 100px;
}

.kb-main {
  background: var(--surface-solid);
  border-radius: var(--radius-xl);
  border: 1px solid var(--line-light);
  box-shadow: var(--shadow-premium);
  padding: 40px;
  transition: all 0.3s ease;
}

.kb-faq-breadcrumbs {
  margin-bottom: 24px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
}

.kb-faq-breadcrumbs a {
  color: var(--text-muted);
  transition: color 0.2s ease;
}

.kb-faq-breadcrumbs a:hover {
  color: var(--accent);
}

.kb-portal-hero-block {
  margin-bottom: 48px;
  text-align: center;
}

.kb-portal-title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 900;
  color: var(--text-main);
  letter-spacing: -0.04em;
  margin-bottom: 12px;
  line-height: 1.1;
}

.kb-portal-tagline {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.6;
}



.kb-portal-soft-lede {
  margin-top: 16px;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.kb-portal-soft-lede a {
  color: var(--accent);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 4px;
}







.kb-feature {
  margin-top: 14px;
  border: 1px solid #dfe4ec;
  border-radius: 14px;
  background: linear-gradient(135deg, #f9fbff, #f2f6ff);
  color: #1f2937;
  padding: 16px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 12px;
}



.kb-mini-btn {
  border: 1px solid #d6dceb;
  background: #ffffff;
  border-radius: 999px;
  color: #334155;
  padding: 8px 10px;
  text-align: center;
  font-size: 12px;
}

.kb-section {
  margin-top: 18px;
}

.kb-section-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.kb-section-head h3 {
  color: #25344d;
}

.kb-tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.kb-graph-filters {
  margin: 4px 0 14px;
}

.kb-tag {
  border: 1px solid #d7dde7;
  border-radius: 999px;
  background: #fff;
  color: #4f5c74;
  font-size: 12px;
  padding: 6px 10px;
}







.kb-about {
  margin-top: 18px;
  border-radius: 14px;
  border: 1px solid #dfe4ec;
  background: linear-gradient(120deg, #ffffff, #f7f9fd);
  color: #1f2937;
  padding: 16px;
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr auto;
  align-items: center;
}



@media (max-width: 1080px) {


  .kb-sidebar {
    position: static;
  }





  .kb-feature,
  .kb-about {
    grid-template-columns: 1fr;
  }
}

.kb-nav-toggle {
  width: 100%;
  border: 0;
  background: transparent;
  color: #6b7280;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 11px;
  text-align: left;
  padding: 0 2px;
  margin-bottom: 8px;
  cursor: pointer;
}

.kb-nav-links.kb-collapsed {
  display: none;
}

.kb-anchor-target {
  scroll-margin-top: 96px;
}

.kb-graph-toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}



.kb-graph-stage--immersive.graph-wrapper-kb {
  position: relative;
  width: 100%;
  border-radius: 16px;
  overflow: hidden;
  min-height: 360px;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 52%, #0f3460 100%);
  box-shadow: inset 0 0 90px rgba(0, 0, 0, 0.35);
}

.kb-graph-svg-el {
  display: block;
  width: 100%;
  aspect-ratio: 920 / 560;
  height: auto;
  min-height: min(560px, 72vh);
  max-height: min(620px, 85vh);
  background: transparent;
  cursor: grab;
  touch-action: none;
}

.kb-graph-svg-el:active {
  cursor: grabbing;
}

.kb-graph-link {
  stroke: rgba(150, 158, 210, 0.32);
  stroke-width: 1.65;
  stroke-dasharray: 4 3;
  fill: none;
  transition: stroke 0.2s ease, stroke-opacity 0.2s ease, stroke-width 0.15s ease;
}

.kb-graph-link--focus:not(.kb-graph-link--path) {
  stroke: rgba(199, 125, 255, 0.92);
  stroke-width: 3;
  stroke-dasharray: none;
}





.kb-sidebar-taxonomy-note {
  margin: -2px 0 10px !important;
  font-size: 12px;
  line-height: 1.45;
  color: rgba(148, 163, 184, 0.92) !important;
}

.kb-muted-banner {
  border: 1px solid rgba(37, 99, 235, 0.25);
  background: rgba(37, 99, 235, 0.06);
  color: #1e293b;
  border-radius: 12px;
}



a.kb-domain-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

a.kb-domain-card:hover .kb-domain-card-cta {
  text-decoration: underline;
}





.kb-graph-head-inline .section-note {
  flex: 1 1 min(24rem, 100%);
  text-align: right;
  font-size: 11px;
  line-height: 1.4;
}

.kb-graph-graph-primary .kb-graph-stage--immersive {
  min-height: clamp(400px, 62vh, 680px);
}

.kb-graph-node-label {
  font-family: inherit;
  pointer-events: none;
  dominant-baseline: middle;
  fill: rgba(245, 248, 255, 0.96);
  font-size: 12px;
  font-weight: 600;
}

.kb-graph-node-group {
  transition: opacity 0.3s ease;
}

.kb-graph-node-shape {
  transition: r 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), stroke 0.3s ease, stroke-width 0.3s ease;
  filter: drop-shadow(0 0 3px rgba(255, 255, 255, 0.25));
}

.kb-graph-node-label {
  transition: dy 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), font-size 0.3s ease, font-weight 0.3s ease, fill 0.3s ease;
}

/* Hovering Micro-interactions */
.kb-graph-node-group:hover .kb-graph-node-shape {
  stroke: #ffffff !important;
  stroke-width: 3.5px !important;
  filter: drop-shadow(0 0 10px rgba(255, 255, 255, 0.65)) !important;
}

.kb-graph-node-group:hover .kb-graph-node-label {
  fill: #ffffff !important;
}

/* Selected Focus State & Breathing Glow Animation */
.kb-graph-node-group.kb-focus .kb-graph-node-shape {
  stroke: #60a5fa !important; /* High contrast premium light blue outline */
  stroke-width: 4.5px !important;
  animation: kb-node-pulse 2s infinite alternate ease-in-out;
}

.kb-graph-node-group.kb-focus .kb-graph-node-label {
  fill: #60a5fa !important;
  font-weight: 800 !important;
}

@keyframes kb-node-pulse {
  0% {
    filter: drop-shadow(0 0 6px rgba(96, 165, 250, 0.5));
  }
  100% {
    filter: drop-shadow(0 0 20px rgba(96, 165, 250, 0.95));
  }
}

.kb-info-panel .kb-tag-cloud a.kb-tag {
  text-decoration: none;
  color: inherit;
}

.kb-info-panel .kb-path-list a {
  color: inherit;
  text-underline-offset: 2px;
}

.kb-info-panel .kb-path-list a:hover {
  opacity: 0.85;
}

.kb-graph-tooltip {
  position: absolute;
  z-index: 5;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s ease;
  max-width: 280px;
  padding: 0.85rem 1rem;
  border-radius: 12px;
  background: rgba(18, 20, 42, 0.94);
  border: 1px solid rgba(199, 125, 255, 0.45);
  color: #e8e9f8;
  font-size: 0.86rem;
  line-height: 1.48;
  box-shadow: 0 10px 36px rgba(0, 0, 0, 0.5);
}

.kb-graph-tooltip-title {
  color: #d8bcff;
  font-weight: 700;
  margin-bottom: 0.35rem;
  font-size: 0.95rem;
}

.kb-graph-tooltip-type {
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #a090c0;
  margin-bottom: 0.4rem;
}

.kb-graph-controls-graph {
  position: absolute;
  top: 0.65rem;
  right: 0.65rem;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  z-index: 4;
}

.kb-graph-controls-graph button {
  background: rgba(28, 32, 62, 0.85);
  border: 1px solid rgba(199, 125, 255, 0.42);
  color: #e8e9f8;
  padding: 0.42rem 0.72rem;
  border-radius: 8px;
  font-size: 0.76rem;
  cursor: pointer;
  backdrop-filter: blur(4px);
}

.kb-graph-controls-graph button:hover {
  background: rgba(199, 125, 255, 0.28);
  border-color: rgba(218, 180, 255, 0.75);
}

.kb-graph-d3-msg {
  position: absolute;
  left: 12px;
  bottom: 10px;
  right: 12px;
  margin: 0;
  padding: 8px 10px;
  font-size: 0.82rem;
  color: #fecaca;
  z-index: 4;
}





.kb-info-panel {
  border: 1px solid #dfe4ec;
  border-radius: 12px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(249, 251, 255, 0.94));
  padding: 12px;
  position: sticky;
  top: 96px;
  box-shadow: var(--shadow);
}

.kb-info-panel h4 {
  margin: 0 0 8px;
  color: #25344d;
}

.kb-info-block {
  margin-top: 10px;
}

.kb-info-block strong {
  display: block;
  margin-bottom: 6px;
  color: #4b5870;
  font-size: 13px;
}



.kb-tag {
  border: 1px solid #d7dde7;
  border-radius: 999px;
  background: #fff;
  color: #4f5c74;
  font-size: 12px;
  padding: 6px 10px;
  cursor: pointer;
}

.kb-tag.active {
  background: #eef2ff;
  color: #303b59;
  border-color: #c7d0e4;
}

.kb-tag.kb-static {
  cursor: default;
}

.kb-hidden {
  display: none !important;
}

.kb-detail-card {
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.kb-detail-card:hover {
  transform: translateY(-1px);
  box-shadow: 0 16px 28px rgba(15, 23, 42, 0.14);
}

.kb-index-box {
  margin-bottom: 12px;
  border: 1px solid #e1e7f2;
  border-radius: 12px;
  background: #ffffff;
  padding: 10px;
}

.kb-index-title {
  display: block;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #6b7280;
  margin-bottom: 8px;
}

.kb-index-link {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 7px 8px;
  border-radius: 8px;
  color: #374151;
  font-size: 13px;
}

.kb-index-link:hover {
  background: #eef2ff;
}

.kb-index-link span {
  font-size: 12px;
  color: #4f46e5;
}









@media (max-width: 780px) {


  .kb-info-panel {
    position: static;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .card,
  .tutorial-item,
  .btn,
  .nav-link,
  .kb-detail-card {
    will-change: transform;
  }
}



/* ------------------------------------------------------------------
   Final Theme Override: long-reading friendly (Ramanamaharshi-like)
   Full site uses warm, soft background; homepage keeps blue/cyan accents.
------------------------------------------------------------------- */

:root {
  color-scheme: light;
  /* Fallback values for safety */
  --hero-blend-color: 248, 250, 252;
  --bg: #f1ece6;
  --bg-soft: #e8e4de;
  --surface: rgba(252, 251, 248, 0.94);
  --surface-strong: #faf8f5;
  --line: #dcd4c9;
  --line-soft: #e8e2d8;
  --text: #1f2937;
  --muted: #5f6777;
  --brand: #374151;
  --brand-2: #4b5563;
  --accent: #6b7280;
  --shadow: 0 10px 24px rgba(29, 22, 12, 0.07);
  --shadow-lg: 0 16px 34px rgba(29, 22, 12, 0.1);
}

/* Warm Newspaper Yellow Theme - strictly for Knowledge Base pages */
body[data-page="knowledge"] {
  --hero-blend-color: 241, 236, 230;
  --bg: #f1ece6;
  --bg-soft: #e8e4de;
  --surface: rgba(252, 251, 248, 0.94);
  --surface-strong: #faf8f5;
  --line: #dcd4c9;
  --line-soft: #e8e2d8;
  --text: #1f2937;
  --muted: #5f6777;
  --shadow: 0 10px 24px rgba(29, 22, 12, 0.07);
  --shadow-lg: 0 16px 34px rgba(29, 22, 12, 0.1);

  background:
    radial-gradient(ellipse 95% 42% at 50% 0%, rgba(15, 23, 42, 0.055), transparent 52%),
    radial-gradient(42rem 24rem at 0% 18%, rgba(192, 176, 151, 0.09), transparent 56%),
    radial-gradient(36rem 20rem at 100% 12%, rgba(148, 163, 184, 0.06), transparent 54%),
    linear-gradient(180deg, #e8eaf0 0%, #ebe7e1 14%, #f0ebe4 38%, #f3efe8 100%) !important;
}

body[data-page="knowledge"]::before {
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.22), rgba(255, 255, 255, 0.12)),
    radial-gradient(circle at 22% 12%, rgba(99, 102, 241, 0.035), transparent 36%),
    radial-gradient(circle at 78% 8%, rgba(145, 123, 90, 0.035), transparent 34%);
}

/* Premium Cool Slate & Ice White Theme - for all other pages (Home, Tutorials, News, About, etc.) */
body[data-page="home"],
body[data-page="tutorials"],
body[data-page="news"],
body[data-page="about"],
body[data-page="contact"],
body:not([data-page="knowledge"]) {
  --hero-blend-color: 248, 250, 252;
  --bg: #f8fafc;
  --bg-soft: #f1f5f9;
  --surface: rgba(255, 255, 255, 0.9);
  --surface-strong: #ffffff;
  --line: #cbd5e1;
  --line-soft: #e2e8f0;
  --text: #0f172a;
  --muted: #475569;
  --shadow: 0 10px 24px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 16px 34px rgba(15, 23, 42, 0.06);

  background:
    radial-gradient(ellipse 95% 42% at 50% 0%, rgba(37, 99, 235, 0.02), transparent 52%),
    radial-gradient(36rem 20rem at 100% 12%, rgba(148, 163, 184, 0.04), transparent 54%),
    linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%) !important;
}

body[data-page="home"]::before,
body[data-page="tutorials"]::before,
body[data-page="news"]::before,
body[data-page="about"]::before,
body[data-page="contact"]::before,
body:not([data-page="knowledge"])::before {
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.4), rgba(255, 255, 255, 0.2)),
    radial-gradient(circle at 22% 12%, rgba(37, 99, 235, 0.02), transparent 36%),
    radial-gradient(circle at 78% 8%, rgba(148, 163, 184, 0.02), transparent 34%);
}



.chip,
.tag,
.kb-tag {
  border-color: var(--line-soft) !important;
  background: var(--bg-soft) !important;
  color: var(--muted) !important;
}

.btn {
  border-color: var(--line) !important;
  background: var(--surface-strong) !important;
  color: var(--text) !important;
  box-shadow: var(--shadow) !important;
  transition: all 0.2s ease !important;
}

.btn:hover {
  background: var(--bg-soft) !important;
  box-shadow: var(--shadow-lg) !important;
}

.btn-primary {
  background: linear-gradient(135deg, #1e293b, #334155) !important;
  color: #ffffff !important;
  border-color: transparent !important;
}

.btn-primary:hover {
  background: linear-gradient(135deg, #0f172a, #1e293b) !important;
  color: #ffffff !important;
}

.kb-sidebar:not(.kb-sidebar--portal) {
  background: linear-gradient(180deg, #fffdf8, #f7f2e9) !important;
  color: #1f2937 !important;
  border: 1px solid var(--line) !important;
  box-shadow: var(--shadow) !important;
}

.kb-sidebar:not(.kb-sidebar--portal) .kb-nav-group { border-top-color: #e4dbcf !important; }
.kb-sidebar:not(.kb-sidebar--portal) .kb-nav-toggle,
.kb-sidebar:not(.kb-sidebar--portal) .kb-nav-title { color: #6b7280 !important; }
.kb-sidebar:not(.kb-sidebar--portal) .kb-side-link { color: #4f5a70 !important; }
.kb-sidebar:not(.kb-sidebar--portal) .kb-side-link:hover,
.kb-sidebar:not(.kb-sidebar--portal) .kb-side-link.active { background: #eef2ff !important; color: #334155 !important; }

.kb-feature,
.kb-about {
  background: linear-gradient(180deg, #fffdf8, #f7f2e9) !important;
  color: #1f2937 !important;
  border-color: var(--line) !important;
}

.kb-mini-btn {
  background: #fffdfa !important;
  border-color: #d9d1c6 !important;
  color: #334155 !important;
}



/* Full-bleed dark hero (home + inner pages)—matches footer / brand gradient language */
.hero.hero-premium {
  margin: 0;
  padding: clamp(48px, 7vw, 88px) 0 clamp(52px, 8vw, 96px);
  width: 100%;
  max-width: none;
  position: relative;
  background:
    radial-gradient(ellipse 85% 55% at 50% -8%, rgba(30, 64, 175, 0.34), transparent 58%),
    radial-gradient(ellipse 70% 45% at 100% 60%, rgba(15, 23, 42, 0.9), transparent 52%),
    radial-gradient(ellipse 60% 40% at 0% 70%, rgba(15, 23, 42, 0.85), transparent 48%),
    linear-gradient(180deg, #020617 0%, #0a1628 42%, #071018 100%);
  box-shadow:
    inset 0 1px 0 rgba(96, 165, 250, 0.08),
    inset 0 0 80px rgba(29, 78, 216, 0.06);
}

.hero.hero-premium::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: clamp(80px, 12vw, 140px); /* Smooth, taller height for natural transition */
  pointer-events: none;
  background: linear-gradient(
    180deg,
    rgba(var(--hero-blend-color), 0) 0%,
    rgba(var(--hero-blend-color), 0.08) 22%,
    rgba(var(--hero-blend-color), 0.22) 44%,
    rgba(var(--hero-blend-color), 0.48) 66%,
    rgba(var(--hero-blend-color), 0.78) 84%,
    rgba(var(--hero-blend-color), 0.96) 94%,
    var(--bg) 100%
  );
}

.hero.hero-premium .hero-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  width: min(1220px, 92%);
  margin: 0 auto;
}

.hero.hero-premium .hero-eyebrow-premium.eyebrow {
  margin-bottom: 18px;
  border-color: rgba(96, 165, 250, 0.35);
  background: rgba(15, 23, 42, 0.65);
  color: rgba(191, 219, 254, 0.92);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 11px;
  font-weight: 650;
}

.hero.hero-premium .hero-title-wrap {
  width: 100%;
  max-width: 100%;
  text-align: center;
}

.hero.hero-premium--home .hero-title-wrap {
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.hero.hero-premium--home .hero-title-wrap::-webkit-scrollbar {
  height: 5px;
}

.hero.hero-premium--home .hero-title-wrap::-webkit-scrollbar-thumb {
  background: rgba(96, 165, 250, 0.35);
  border-radius: 999px;
}

.hero.hero-premium .hero-title-premium.hero-title {
  display: block;
  margin: 0 auto;
  max-width: min(52rem, 100%);
  font-size: clamp(26px, 3.35vw, 48px);
  font-weight: 720;
  line-height: 1.12;
  letter-spacing: -0.03em;
  color: #f8fafc;
  text-wrap: balance;
  white-space: normal;
  text-shadow: 0 2px 40px rgba(37, 99, 235, 0.18);
}

.hero.hero-premium--home .hero-title-premium.hero-title {
  display: inline-block;
  max-width: none;
  font-size: clamp(26px, 3.35vw, 52px);
  text-wrap: unset;
  white-space: nowrap;
}

.hero.hero-premium .hero-sub-premium.hero-sub {
  margin-top: 20px;
  margin-left: auto;
  margin-right: auto;
  max-width: min(70rem, 100%);
  font-size: clamp(15px, 1.35vw, 18px);
  line-height: 1.65;
  color: rgba(226, 232, 240, 0.88);
}

.hero.hero-premium .hero-sub-gradient {
  display: inline;
  font-weight: 620;
  background: linear-gradient(92deg, #93c5fd 0%, #60a5fa 35%, #3b82f6 70%, #2563eb 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero.hero-premium .hero-search-shell {
  margin-top: 32px;
  margin-left: auto;
  margin-right: auto;
  max-width: min(820px, 100%);
  padding: 14px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.28);
  box-shadow:
    0 0 0 1px rgba(15, 23, 42, 0.25),
    0 16px 40px rgba(0, 0, 0, 0.22),
    0 0 48px rgba(37, 99, 235, 0.1);
}

.hero.hero-premium .hero-search-premium.search-row {
  margin-top: 0;
  max-width: none;
  margin-left: auto;
  margin-right: auto;
  grid-template-columns: 1fr auto;
  align-items: stretch;
  gap: 12px;
}

.hero.hero-premium .hero-search-premium input[type="text"] {
  min-height: 56px;
  padding: 16px 18px;
  font-size: 17px;
  background: rgba(252, 252, 251, 0.97);
  border: 2px solid rgba(59, 130, 246, 0.4);
  color: #0f172a;
  border-radius: 14px;
  box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.85);
}

.hero.hero-premium .hero-search-premium input::placeholder {
  color: #64748b;
}

.hero.hero-premium .btn-premium-primary.btn-primary {
  min-height: 56px;
  padding: 16px 28px;
  font-size: 16px;
  border-radius: 14px;
  font-weight: 700;
  color: #0f172a;
  background: linear-gradient(180deg, #f8fafc 0%, #e8edf4 100%);
  border: 1px solid rgba(255, 255, 255, 0.95);
  box-shadow:
    0 1px 2px rgba(255, 255, 255, 0.7) inset,
    0 8px 24px rgba(15, 23, 42, 0.2);
}

.hero.hero-premium .btn-premium-primary.btn-primary:hover {
  background: linear-gradient(180deg, #ffffff 0%, #eef2f7 100%);
  box-shadow:
    0 1px 3px rgba(255, 255, 255, 0.9) inset,
    0 10px 28px rgba(15, 23, 42, 0.24);
}

.hero.hero-premium .hero-cta-row {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.hero.hero-premium .hero-chips-row {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.hero.hero-premium .chip {
  border-color: rgba(147, 197, 253, 0.4);
  background: rgba(15, 23, 42, 0.5);
  color: rgba(241, 245, 249, 0.95);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.06);
}

.hero.hero-premium .chip.pill-ok {
  border-color: rgba(52, 211, 153, 0.55);
  background: rgba(6, 78, 59, 0.35);
  color: #ecfdf5;
}

.hero.hero-premium .btn-premium-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  font-weight: 600;
  padding: 12px 20px;
  color: #f8fafc;
  background: rgba(37, 99, 235, 0.22);
  border: 1px solid rgba(96, 165, 250, 0.45);
  box-shadow: 0 0 20px rgba(29, 78, 216, 0.12);
  text-decoration: none;
}

.hero.hero-premium .btn-premium-secondary:hover {
  background: rgba(37, 99, 235, 0.32);
  box-shadow: 0 0 28px rgba(37, 99, 235, 0.2);
}

.hero.hero-premium .btn-premium-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  font-weight: 600;
  padding: 12px 20px;
  color: rgba(241, 245, 249, 0.95);
  background: transparent;
  border: 1px solid rgba(148, 163, 184, 0.45);
  text-decoration: none;
}

.hero.hero-premium .btn-premium-ghost:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(203, 213, 225, 0.55);
}

.hero.hero-premium .hero-trust {
  margin-top: 36px;
  padding-top: 22px;
  border-top: 1px solid rgba(59, 130, 246, 0.12);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: clamp(16px, 3vw, 28px);
}

.hero.hero-premium .hero-trust-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  min-width: 5.5rem;
}

.hero.hero-premium .hero-trust-item strong {
  font-size: clamp(1.35rem, 2.8vw, 1.65rem);
  font-weight: 750;
  color: #ffffff;
  text-shadow: 0 2px 14px rgba(15, 23, 42, 0.35);
}

.hero.hero-premium .hero-trust-item span {
  font-size: 13px;
  font-weight: 650;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: rgba(226, 232, 240, 0.95);
}

@media (max-width: 780px) {
  .hero.hero-premium .hero-title-premium.hero-title {
    font-size: clamp(22px, 3.6vw, 30px);
  }

  .hero.hero-premium--home .hero-title-premium.hero-title {
    font-size: clamp(22px, 3.6vw, 30px);
  }

  .hero.hero-premium .hero-search-shell {
    padding: 12px;
  }

  .hero.hero-premium .hero-search-premium.search-row {
    grid-template-columns: 1fr;
  }

  .hero.hero-premium .btn-premium-primary.btn-primary {
    min-height: 52px;
    width: 100%;
  }

  .hero.hero-premium .hero-cta-row {
    flex-direction: column;
  }

  .hero.hero-premium .btn-premium-secondary,
  .hero.hero-premium .btn-premium-ghost {
    width: 100%;
    max-width: 320px;
    justify-content: center;
  }
}

/* ------------------------------------------------------------------
   Inner pages: lighter “page header” (lower visual weight than home hero)
------------------------------------------------------------------- */

.hero-page {
  padding: 26px 0 6px;
  max-width: 900px;
}

.hero-page-eyebrow {
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.hero-page-title {
  margin: 10px 0 0;
  font-size: clamp(1.5rem, 2.4vw, 2rem);
  font-weight: 720;
  letter-spacing: -0.02em;
  line-height: 1.18;
  color: var(--text);
}

.hero-page-lead {
  margin: 12px 0 0;
  max-width: 46rem;
  color: var(--muted);
  line-height: 1.65;
  font-size: 0.98rem;
}

.hero-page .search-row {
  margin-top: 18px;
  max-width: 640px;
}

.hero-page-actions {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  align-items: center;
}

.hero-page-actions a {
  font-weight: 650;
  font-size: 14px;
  color: #1d4ed8;
  text-decoration: none;
}

.hero-page-actions a:hover {
  text-decoration: underline;
  text-underline-offset: 2px;
}

.hero-page-chips {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ------------------------------------------------------------------
   Knowledge base “portal” layout (dark rail + light reading canvas)
------------------------------------------------------------------- */

body[data-page="knowledge"] {
  overflow-x: hidden;
  overflow-y: auto !important;
}

/* Ensure parent layouts and scroll containers don't trap or hijack the mouse wheel, letting page body scroll naturally */
body[data-page="knowledge"] .kb-app,
body[data-page="knowledge"] .kb-stage,
body[data-page="knowledge"] .kb-stage-scroll {
  overflow: visible !important;
  height: auto !important;
}

/* Allow actual graph svg container to overflow naturally or maintain scrollability if needed */
body[data-page="knowledge"] .kb-canvas {
  overflow: visible !important;
}

/* Make global site header non-sticky so it scrolls away naturally on Knowledge pages */
body[data-page="knowledge"] .header-stack,
body[data-page="knowledge"] > .topbar {
  position: relative !important;
  top: auto !important;
  z-index: 10 !important;
}

/* Maintain premium unified dark styling when scrolled to the very top */
body[data-page="knowledge"] > .topbar {
  background: linear-gradient(180deg, #252a36 0%, #1e232e 100%) !important;
  border-bottom: 1px solid rgba(0, 0, 0, 0.25) !important;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04), 0 4px 20px rgba(0, 0, 0, 0.15) !important;
}

body[data-page="knowledge"] > .topbar .brand {
  color: #f8fafc !important;
}

body[data-page="knowledge"] > .topbar .nav-link {
  color: rgba(203, 213, 225, 0.88) !important;
}

body[data-page="knowledge"] > .topbar .nav-link:hover {
  color: #f8fafc !important;
  background: rgba(255, 255, 255, 0.06) !important;
}

body[data-page="knowledge"] > .topbar .nav-link.active {
  color: #fde68a !important;
  background: rgba(0, 0, 0, 0.25) !important;
}

body[data-page="knowledge"] > .kb-app {
  margin-top: 0;
}

body[data-page="knowledge"] .kb-app {
  gap: 0;
  background: #151923;
}
@media (max-width: 768px) {
  body[data-page="knowledge"] .kb-app {
    background: transparent;
  }
}

/* Force sticky behavior at top: 0 for sidebar and subnavigation bar when global header scrolls away */
body[data-page="knowledge"] .kb-sidebar.kb-sidebar--portal {
  position: sticky !important;
  top: 0 !important;
  height: 100vh !important;
  overflow-y: auto !important;
  z-index: 100 !important;
  border-radius: 0 !important;
  padding: 0 14px 24px !important;
}

body[data-page="knowledge"] .kb-subnav {
  position: sticky !important;
  top: 0 !important;
  z-index: 99 !important;
}

.kb-app {
  display: flex;
  width: 100%;
  min-height: calc(100vh - 56px);
  align-items: stretch;
}

/* Higher specificity than `.kb-sidebar` so portal rail is flush (no rounded “gaps” on body bg) */
.kb-sidebar.kb-sidebar--portal {
  width: min(280px, 92vw);
  flex-shrink: 0;
  background: linear-gradient(180deg, #1a1f2e 0%, #151923 48%, #12151c 100%);
  color: #e2e8f0;
  border: none;
  border-right: none;
  border-radius: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 0 14px 24px;
  box-shadow: 1px 0 0 rgba(0, 0, 0, 0.5);
  transition:
    width 0.22s ease,
    padding 0.22s ease,
    opacity 0.18s ease,
    border-color 0.22s ease;
}

/* —— Premium Dark Portal Sidebar (kb-sidebar--portal) Inner Elements —— */
.kb-sidebar--portal .kb-index-box {
  background: rgba(15, 23, 42, 0.45) !important;
  border: 1px solid rgba(148, 163, 184, 0.12) !important;
  border-radius: 12px !important;
  padding: 12px !important;
}

.kb-sidebar--portal .kb-index-title {
  display: block !important;
  font-size: 11px !important;
  font-weight: 700 !important;
  letter-spacing: 0.06em !important;
  text-transform: uppercase !important;
  color: rgba(148, 163, 184, 0.95) !important;
  margin-bottom: 10px !important;
}

.kb-sidebar--portal .kb-index-link {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  padding: 8px 6px !important;
  border-radius: 8px !important;
  color: rgba(226, 232, 240, 0.92) !important;
  text-decoration: none !important;
  font-size: 13px !important;
  font-weight: 550 !important;
}

.kb-sidebar--portal .kb-index-link:hover {
  background: rgba(37, 99, 235, 0.2) !important;
  color: #ffffff !important;
}

.kb-sidebar--portal .kb-index-link span {
  font-size: 11px !important;
  font-weight: 700 !important;
  color: rgba(147, 197, 253, 0.95) !important;
  background: rgba(30, 58, 138, 0.45) !important;
  padding: 2px 7px !important;
  border-radius: 999px !important;
}

.kb-sidebar--portal .kb-sidebar-taxonomy-note {
  margin: -2px 0 10px !important;
  font-size: 12px !important;
  line-height: 1.45 !important;
  color: rgba(148, 163, 184, 0.92) !important;
}

.kb-sidebar--portal .kb-nav-group + .kb-nav-group {
  margin-top: 8px !important;
  padding-top: 12px !important;
  border-top: 1px solid rgba(255, 255, 255, 0.08) !important;
}

.kb-sidebar--portal .kb-nav-toggle {
  width: 100% !important;
  text-align: left !important;
  padding: 8px 6px !important;
  border: none !important;
  border-radius: 8px !important;
  background: transparent !important;
  color: rgba(226, 232, 240, 0.95) !important;
  font-size: 12px !important;
  font-weight: 650 !important;
  cursor: pointer !important;
}

.kb-sidebar--portal .kb-nav-toggle:hover {
  background: rgba(255, 255, 255, 0.06) !important;
}

.kb-sidebar--portal .kb-nav-links {
  margin-top: 4px !important;
  padding-left: 4px !important;
  display: grid !important;
  gap: 2px !important;
}

.kb-sidebar--portal .kb-side-link {
  padding: 7px 8px !important;
  border-radius: 8px !important;
  color: rgba(203, 213, 225, 0.9) !important;
  text-decoration: none !important;
  font-size: 13px !important;
}

.kb-sidebar--portal .kb-side-link:hover,
.kb-sidebar--portal .kb-side-link.active {
  background: rgba(37, 99, 235, 0.28) !important;
  color: #f8fafc !important;
}

body[data-page="knowledge"] .kb-app.kb-sidebar-collapsed .kb-sidebar.kb-sidebar--portal {
  width: 52px;
  min-width: 52px;
  padding: 0 !important;
  opacity: 1;
  pointer-events: auto;
  overflow: hidden;
  align-items: center;
  box-shadow: 1px 0 0 rgba(0, 0, 0, 0.5);
}

body[data-page="knowledge"] .kb-app.kb-sidebar-collapsed .kb-sidebar.kb-sidebar--portal > :not(.kb-rail-toolbar) {
  display: none !important;
}

body[data-page="knowledge"] .kb-app.kb-sidebar-collapsed .kb-rail-toolbar {
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  height: 48px !important;
  width: 100% !important;
  padding: 0 !important;
  margin: 0 !important;
  border-bottom: none !important;
}

body[data-page="knowledge"] .kb-app.kb-sidebar-collapsed .kb-rail-toolbar-label {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

body[data-page="knowledge"] .kb-app.kb-sidebar-collapsed .kb-subnav {
  padding-left: 18px;
}

.kb-rail-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-shrink: 0;
  box-sizing: border-box;
  min-height: 48px;
  padding: 0 2px 0 4px;
  margin: 0;
}

/* Nudge rail toggle + label down to match `.kb-subnav` row (same 48px band as stage chrome) */
body[data-page="knowledge"] .kb-rail-toolbar {
  padding: 0;
}

.kb-rail-toolbar-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(148, 163, 184, 0.95);
}

.kb-rail-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  padding: 0;
  border: 1px solid rgba(148, 163, 184, 0.28);
  border-radius: 10px;
  background: rgba(15, 23, 42, 0.55);
  color: #e2e8f0;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.kb-rail-toggle:hover {
  background: rgba(37, 99, 235, 0.35);
  border-color: rgba(96, 165, 250, 0.45);
}

.kb-rail-toggle:focus-visible {
  outline: 2px solid #93c5fd;
  outline-offset: 2px;
}

.kb-rail-toggle-icon {
  font-size: 12px;
  line-height: 1;
}

.kb-portal-sub a {
  color: #9a3412;
  font-weight: 650;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.kb-portal-sub a:hover {
  color: #7c2d12;
}

.kb-cax-primer .kb-cax-h {
  margin: 22px 0 8px;
  font-size: 1rem;
  font-weight: 750;
  letter-spacing: -0.02em;
  color: #2d2419;
}

.kb-cax-dl {
  margin: 10px 0 0;
  display: grid;
  gap: 14px;
  max-width: 52rem;
}

.kb-cax-dl dt {
  font-size: 14px;
  font-weight: 750;
  color: #2d2419;
}

.kb-cax-dl dd {
  margin: 4px 0 0;
  font-size: 14px;
  line-height: 1.58;
  color: #5c5348;
}

.kb-cax-sources a {
  font-weight: 650;
}

.kb-pdf-matrix {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  background: rgba(255, 252, 247, 0.92);
  border: 1px solid rgba(90, 74, 58, 0.15);
  border-radius: 12px;
  overflow: hidden;
}

.kb-pdf-matrix th,
.kb-pdf-matrix td {
  border: 1px solid rgba(90, 74, 58, 0.12);
  padding: 8px 10px;
  text-align: center;
}

.kb-pdf-matrix thead th {
  background: rgba(45, 36, 25, 0.06);
  font-weight: 720;
  color: #2d2419;
}

.kb-pdf-matrix tbody th[scope="row"] {
  text-align: left;
  font-weight: 650;
  color: #3d3428;
  background: rgba(45, 36, 25, 0.04);
}

a.kb-pdf-matrix-rowlink {
  color: inherit;
  text-decoration: none;
  font-weight: inherit;
}

a.kb-pdf-matrix-rowlink:hover {
  text-decoration: underline;
}

.kb-pdf-concept-detail {
  scroll-margin-top: 96px;
  margin-top: 14px;
  padding: 10px 12px 12px 14px;
  border-left: 3px solid rgba(90, 74, 58, 0.28);
  border-radius: 0 10px 10px 0;
  background: rgba(255, 252, 247, 0.65);
}

.kb-pdf-concept-h {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 750;
  color: #2d2419;
}

.kb-pdf-pre {
  margin: 12px 0 0;
  padding: 14px 16px;
  border-radius: 12px;
  background: rgba(15, 23, 42, 0.06);
  border: 1px solid rgba(90, 74, 58, 0.12);
  font-size: 13px;
  overflow-x: auto;
}

.kb-pdf-pre code {
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  color: #1f2937;
}

.kb-portal-search {
  width: 100%;
  padding: 10px 14px;
  border-radius: 8px;
  border: 1px solid rgba(15, 23, 42, 0.22);
  background: #ffffff !important; /* Premium crisp solid white background */
  color: #0f172a !important; /* Excellent readability text color */
  font-size: 13px;
  outline: none;
  transition: all 0.2s ease;
  box-shadow: inset 0 1px 2px rgba(15, 23, 42, 0.05);
}

.kb-portal-search::placeholder {
  color: #64748b !important; /* Highly visible slate-500 placeholder text */
  opacity: 1 !important;
}

.kb-portal-search:focus {
  border-color: #2563eb !important;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2), inset 0 1px 2px rgba(15, 23, 42, 0.05) !important;
  background: #ffffff !important;
}
.kb-stage {
  position: relative;
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  background: #ebe4d8;
}

.kb-subnav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  padding: 0 18px;
  min-height: 48px;
  box-sizing: border-box;
  background: linear-gradient(180deg, #252a36 0%, #1e232e 100%);
  border-bottom: 1px solid rgba(0, 0, 0, 0.25);
  border-left: 1px solid rgba(0, 0, 0, 0.35);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.kb-subnav-link {
  padding: 8px 12px;
  border-radius: 8px 8px 0 0;
  font-size: 13px;
  font-weight: 600;
  color: rgba(203, 213, 225, 0.88);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}

.kb-subnav-link:hover {
  color: #f8fafc;
  background: rgba(255, 255, 255, 0.06);
}

.kb-subnav-link.active {
  color: #fde68a;
  border-bottom-color: #d4a017;
  background: rgba(0, 0, 0, 0.12);
}

.kb-stage-scroll {
  flex: 1;
  overflow: auto;
  background: linear-gradient(180deg, #f2ebe2 0%, #ebe4d8 35%, #e8e0d4 100%);
}

.kb-main--portal {
  max-width: 1100px;
  margin: 0 auto;
  padding: 28px 22px 56px;
}

.kb-portal-landing {
  margin-bottom: 28px;
}

.kb-portal-tagline {
  text-align: center;
  font-size: 13px;
  color: #6b5c4a;
  font-style: italic;
  margin: 0 0 18px;
  letter-spacing: 0.02em;
}

.kb-portal-tagline code,
.kb-portal-soft-lede code {
  font-size: 0.95em;
  font-style: normal;
  padding: 1px 6px;
  border-radius: 5px;
  background: rgba(251, 191, 36, 0.14);
  border: 1px solid rgba(245, 158, 11, 0.24);
}

.kb-portal-hero-block {
  text-align: center;
  margin-bottom: 26px;
}

.kb-portal-title {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.65rem, 2.8vw, 2.35rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: #2d2419;
}

.kb-portal-icon {
  margin-right: 6px;
}

.kb-portal-sub {
  margin: 12px auto 0;
  max-width: 38rem;
  font-size: 15px;
  line-height: 1.65;
  color: #5c5348;
}

.kb-portal-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 28px;
}

@media (min-width: 720px) {
  .kb-portal-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.kb-portal-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 20px 14px;
  border-radius: 16px;
  background: rgba(255, 252, 247, 0.92);
  border: 1px solid rgba(90, 74, 58, 0.12);
  box-shadow: 0 10px 24px rgba(45, 36, 25, 0.06);
  text-decoration: none;
  color: inherit;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.kb-portal-stat:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 32px rgba(45, 36, 25, 0.1);
}

.kb-portal-stat-num {
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 600;
  color: #3d3428;
  line-height: 1;
}

.kb-portal-stat-label {
  margin-top: 8px;
  font-size: 13px;
  font-weight: 650;
  color: #5c5348;
}

.kb-portal-stat-link {
  margin-top: 10px;
  font-size: 12px;
  font-weight: 650;
  color: #b45309;
}

.kb-portal-quick-wrap {
  border-radius: 20px;
  padding: 22px 20px 24px;
  background: rgba(255, 253, 249, 0.97);
  border: 1px solid rgba(90, 74, 58, 0.12);
  box-shadow: 0 16px 36px rgba(45, 36, 25, 0.08);
}

.kb-portal-quick-heading {
  margin: 0 0 16px;
  font-size: 17px;
  font-weight: 720;
  color: #2d2419;
}

.kb-portal-quick-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 14px;
}

.kb-portal-tile {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 8px;
  padding: 18px 12px;
  border-radius: 14px;
  background: linear-gradient(180deg, #fffefb, #faf6ef);
  border: 1px solid rgba(90, 74, 58, 0.1);
  text-decoration: none;
  color: #2d2419;
  font-size: 13px;
  font-weight: 650;
  transition: transform 0.16s ease, border-color 0.16s ease;
}

.kb-portal-tile:hover {
  transform: translateY(-2px);
  border-color: rgba(37, 99, 235, 0.35);
}

.kb-portal-tile-emoji {
  font-size: 2rem;
  line-height: 1;
}

.kb-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ------------------------------------------------------------------
   Learning paths — Duolingo-style unit row (nodes + spine)
------------------------------------------------------------------- */









































.path-duo-node:hover:not(.path-duo-node--locked) {
  transform: translateY(-2px);
  box-shadow: 0 10px 22px rgba(29, 22, 12, 0.12);
}











@media (max-width: 900px) {
  .kb-app {
    flex-direction: column;
  }

  .kb-sidebar--portal {
    width: 100%;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: flex-start;
  }

  body[data-page="knowledge"] .kb-app.kb-sidebar-collapsed .kb-sidebar.kb-sidebar--portal {
    width: 100%;
    min-width: 0;
    min-height: 0;
    flex-direction: row;
    flex-wrap: nowrap;
    padding: 0 12px;
    align-items: center;
    justify-content: center;
  }

  body[data-page="knowledge"] .kb-app.kb-sidebar-collapsed .kb-rail-toolbar {
    flex-direction: row;
    width: auto;
    min-height: 48px;
    justify-content: center;
    padding: 0;
  }

  .kb-sidebar--portal .kb-nav-group {
    flex: 1 1 140px;
    min-width: 120px;
  }
}

.disclaimer-card {
  border-left: 4px solid rgba(37, 99, 235, 0.35);
}











.vendor-docs-table tbody tr:nth-child(even) td {
  background: rgba(249, 250, 251, 0.7);
}







.vendor-docs-details {
  margin-bottom: 10px;
  border: 1px solid rgba(15, 23, 42, 0.12);
  border-radius: 8px;
  padding: 0 14px;
  background: rgba(249, 250, 251, 0.65);
}

.vendor-docs-details summary {
  cursor: pointer;
  font-weight: 600;
  padding: 12px 0;
  font-size: 0.95rem;
}

.vendor-docs-details[open] summary {
  border-bottom: 1px solid rgba(15, 23, 42, 0.08);
  margin-bottom: 8px;
}

.vendor-docs-details p {
  margin: 0 0 12px;
  font-size: 0.92rem;
  line-height: 1.55;
}

.vendor-docs-excluded h4 {
  font-weight: 600;
}

@media (max-width: 920px) {

}

/* Homepage cookie notice (demo GDPR-style) */
/* Removed redundant cookie notice styles */

/* Contact page */
.contact-page-section {
  padding-bottom: 0;
}



.contact-page-split {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) minmax(260px, 1fr);
  gap: clamp(20px, 3vw, 32px);
  align-items: start;
}

.contact-page-form-col {
  max-width: 480px;
}

.contact-page-aside-col {
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-width: 0;
}

.contact-form-card {
  padding: 22px 22px 20px;
}

.contact-aside-card {
  padding: 20px 20px 18px;
}

.contact-aside-heading {
  margin: 0 0 8px;
  font-size: 1.08rem;
}

.contact-aside-mail-list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  font-size: 0.92rem;
}

.contact-aside-mail-list li {
  margin-bottom: 14px;
}

.contact-aside-mail-list li:last-child {
  margin-bottom: 0;
}

.contact-aside-mail-list strong {
  display: block;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 4px;
}

.contact-aside-mail-list a {
  color: var(--brand-2);
  word-break: break-word;
}

.contact-aside-link-list {
  margin: 10px 0 0;
  padding-left: 1.1rem;
  font-size: 0.94rem;
  line-height: 1.55;
  color: var(--text);
}

.contact-aside-link-list a {
  font-weight: 600;
}

@media (max-width: 860px) {
  .contact-page-split {
    grid-template-columns: 1fr;
  }

  .contact-page-form-col {
    max-width: none;
  }
}

.contact-form-heading {
  margin: 0 0 6px;
  font-size: 1.2rem;
}

.contact-form {
  margin-top: 14px;
}

.contact-form-field {
  margin-bottom: 14px;
}

.contact-form-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 6px;
}

.contact-form-input,
.contact-form-textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--surface-strong);
  font: inherit;
  color: var(--text);
}

.contact-form-textarea {
  resize: vertical;
  min-height: 120px;
}

.contact-form-input:focus,
.contact-form-textarea:focus {
  outline: 2px solid rgba(79, 70, 229, 0.35);
  outline-offset: 1px;
}

.contact-form-actions {
  margin-top: 16px;
}

.contact-form-status {
  margin: 14px 0 0;
  font-size: 0.92rem;
  color: var(--muted);
}

/* —— FAQ lane (kb-faq.html): reference-style hero, stats 2×2, filter tabs —— */
.kb-faq-shell .kb-stage-scroll .kb-main--portal {
  background: rgba(253, 251, 245, 0.65);
  border-radius: 0 0 18px 18px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.45);
}

.kb-faq-breadcrumbs {
  font-size: 12px;
  color: #6b5c4a;
  margin: 0 0 14px;
  letter-spacing: 0.02em;
}

.kb-faq-breadcrumbs a {
  color: #8b7355;
  text-decoration: none;
  font-weight: 600;
}

.kb-faq-breadcrumbs a:hover {
  text-decoration: underline;
}

.kb-faq-breadcrumbs span[aria-current="page"] {
  color: #3d3428;
  font-weight: 650;
}

.kb-faq-hero-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  margin: 0 auto 10px;
  border-radius: 12px;
  background: linear-gradient(145deg, #e9d5ff, #c4b5fd);
  font-size: 20px;
  line-height: 1;
  box-shadow: 0 6px 18px rgba(109, 40, 217, 0.15);
}

.kb-faq-stats-grid.kb-portal-stats {
  max-width: 520px;
  margin: 0 auto 22px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

@media (min-width: 720px) {
  .kb-faq-stats-grid.kb-portal-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.kb-faq-filter-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 20px;
}

.kb-faq-filter-label {
  font-size: 14px;
  font-weight: 600;
  color: #4a4238;
  white-space: nowrap;
}

.kb-faq-filter-select {
  appearance: none;
  border: 1px solid rgba(90, 74, 58, 0.22);
  background: rgba(255, 255, 255, 0.95);
  color: #4a4238;
  font: inherit;
  font-size: 14px;
  font-weight: 500;
  padding: 8px 36px 8px 14px;
  border-radius: 10px;
  cursor: pointer;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns=%22http://www.w3.org/2000/svg%22 width=%2212%22 height=%2212%22 viewBox=%220 0 12 12%22%3E%3Cpath d=%22M3 4.5L6 8L9 4.5%22 stroke=%22%234a4238%22 stroke-width=%221.5%22 fill=%22none%22/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  min-width: 200px;
}

.kb-faq-filter-select:hover {
  border-color: rgba(37, 99, 235, 0.4);
  box-shadow: 0 2px 10px rgba(45, 36, 25, 0.08);
}

.kb-faq-filter-select:focus {
  outline: none;
  border-color: #2563eb;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.kb-faq-entry {
  margin-bottom: 14px;
  padding: 16px 18px;
  border-radius: 14px;
  border: 1px solid rgba(90, 74, 58, 0.12);
  background: rgba(255, 252, 247, 0.96);
}

.kb-faq-entry.kb-hidden {
  display: none !important;
}

.kb-faq-q-trigger {
  display: flex;
  width: 100%;
  align-items: flex-start;
  gap: 12px;
  background: none;
  border: none;
  padding: 0;
  text-align: left;
  cursor: pointer;
  color: inherit;
  font: inherit;
}

.kb-faq-q-trigger h3 {
  flex: 1;
  margin: 0;
  font-size: 1.08rem;
  font-weight: 700;
  color: #2d2419;
  line-height: 1.4;
  transition: color 0.2s ease;
}

.kb-faq-q-trigger:hover h3 {
  color: #b45309;
}

.kb-faq-toggle-ico {
  font-size: 18px;
  color: #8b7355;
  font-weight: bold;
  line-height: 1.4;
  width: 20px;
  text-align: center;
}

.kb-faq-a-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1), margin-top 0.3s ease, opacity 0.3s ease;
  opacity: 0;
}

.kb-faq-entry.is-open .kb-faq-a-body {
  max-height: 500px;
  margin-top: 16px;
  opacity: 1;
}

.kb-faq-source {
  margin: 0 0 10px 38px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #9a8a78;
}

.kb-faq-answer {
  margin: 0 0 0 38px;
  font-size: 14px;
  line-height: 1.7;
  color: #4a4238;
}

.kb-faq-answer a {
  font-weight: 600;
  color: #b45309;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* —— Knowledge lane hero (kb-graph / kb-terms) + graph pills —— */
.page-kb-graph,
.page-kb-terms {
  background: linear-gradient(180deg, #f2ebe2 0%, #ebe4d8 45%, #e5ddd2 100%);
}

/* FAQ-aligned centered hero — kb-graph · kb-software OEM strip */
.page-kb-graph .kb-portal-landing .kb-portal-hero-block .kb-portal-title:not(.kb-portal-title--mixed),
.kb-soft-landing .kb-portal-hero-block .kb-portal-title:not(.kb-portal-title--mixed) {
  font-family: Georgia, "Times New Roman", "Source Han Serif SC", "Noto Serif SC", "Microsoft YaHei", serif;
}

.page-kb-graph .kb-portal-title--mixed,
.page-kb-terms .kb-portal-title--mixed {
  font-family: "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", Georgia, serif;
  font-weight: 700;
}

.kb-soft-landing .kb-portal-hero-block .kb-portal-soft-lede,
.page-kb-graph .kb-portal-hero-block .kb-portal-soft-lede,
.page-kb-terms .kb-portal-hero-block .kb-portal-soft-lede {
  margin: 8px auto 0;
  max-width: 40rem;
  font-size: 15px;
  line-height: 1.65;
  color: #5c5348;
  text-align: center;
}

.kb-soft-landing .kb-portal-hero-block .kb-portal-tagline,
.kb-graph-landing .kb-portal-hero-block .kb-portal-tagline,
.kb-terms-landing .kb-portal-hero-block .kb-portal-tagline {
  margin-bottom: 8px;
}

.kb-graph-landing .kb-portal-hero-block .kb-portal-soft-lede {
  margin-bottom: 4px;
}

.kb-terms-landing .kb-portal-hero-block .kb-portal-soft-lede {
  margin-bottom: 18px;
}

.kb-soft-landing .kb-portal-hero-block .kb-portal-soft-lede {
  margin-bottom: 16px;
}

.kb-terms-landing .kb-lane-eco-table-cap {
  text-align: center;
  margin-bottom: 12px;
}

.kb-terms-landing .kb-terms-chip-row {
  justify-content: center;
}

.kb-soft-landing #cad-sdk.kb-software-post-hero {
  margin: 16px auto 18px;
  padding: 0 8px;
  max-width: 48rem;
  font-size: 0.92rem;
  line-height: 1.55;
  color: #4a4238;
  text-align: center;
}





















@media (min-width: 720px) {

}





.kb-software-eco-table td:nth-child(3) {
  white-space: nowrap;
}

.kb-graph-toolbar-row {
  margin: 12px 0 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: flex-start;
}

.kb-graph-landing .kb-graph-toolbar-row {
  align-items: center;
}

.kb-graph-landing .kb-graph-filters.kb-tag-cloud {
  justify-content: center;
}

.kb-graph-landing .kb-graph-path-row {
  display: flex;
  justify-content: center;
  width: 100%;
}

.kb-pill-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.kb-pill-strip > .kb-tag[data-filter].active,
.kb-graph-filters.kb-pill-strip > .kb-tag[data-filter].active {
  background: linear-gradient(180deg, #e0f2fe 0%, #dbeafe 100%);
  border-color: rgba(37, 99, 235, 0.35);
  color: #1e3a8a;
  font-weight: 700;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.9) inset;
}

.kb-graph-path-row {
  width: 100%;
}

.kb-graph-path-toggle {
  font-weight: 650;
}





a.kb-tag.kb-pill-link {
  text-decoration: none;
  color: #334155;
  border-color: rgba(90, 74, 58, 0.2);
  transition: background 0.15s ease, border-color 0.15s ease;
}

a.kb-tag.kb-pill-link:hover {
  background: rgba(255, 255, 255, 0.95);
  border-color: rgba(37, 99, 235, 0.35);
  color: #1d4ed8;
}

.kb-graph-card-shell {
  margin-top: 2px;
}

.page-kb-graph .kb-graph-card {
  border-radius: 20px;
  border: 1px solid rgba(90, 74, 58, 0.14);
  background: rgba(255, 252, 247, 0.98);
  box-shadow:
    0 18px 44px rgba(45, 36, 25, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.7);
  overflow: hidden;
}

.page-kb-graph .kb-graph-stage--solo {
  border-radius: 0;
  min-height: clamp(600px, 85vh, 1200px);
  background: radial-gradient(circle at center, #2d2419 0%, #1f1913 100%);
}

.page-kb-graph .kb-graph-svg-el--solo {
  min-height: clamp(580px, 82vh, 1180px);
  max-height: none;
  aspect-ratio: auto;
}

.kb-graph-hover-strip {
  position: absolute;
  top: 10px;
  left: 12px;
  right: 140px;
  z-index: 4;
  display: flex;
  align-items: center;
  gap: 8px;
  pointer-events: none;
  font-size: 0.8rem;
  line-height: 1.35;
  color: rgba(241, 245, 249, 0.94);
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.55);
}

.kb-graph-hover-ico {
  flex-shrink: 0;
  font-size: 1.05rem;
  line-height: 1;
}

.kb-info-panel--below-graph {
  border-top: 1px solid rgba(90, 74, 58, 0.1);
  padding: 16px 18px 20px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.65) 0%, rgba(253, 249, 242, 0.95) 100%);
  position: static;
  border-left: none;
  border-right: none;
  border-bottom: none;
  border-radius: 0;
  box-shadow: none;
}

.kb-info-panel-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 6px;
}

.kb-info-panel-heading h4 {
  margin: 0;
  font-size: 1.05rem;
  color: #2d2419;
}

/* KB Card Interactivity */
.kb-card-link { text-decoration: none; color: inherit; display: block; transition: transform 0.2s ease; }
.kb-card-link:hover { transform: translateY(-5px); }
.kb-card-link:hover .kb-detail-card { border-color: #6366f1; box-shadow: 0 10px 25px rgba(0,0,0,0.1); }
.kb-detail-card { cursor: pointer; height: 100%; transition: all 0.2s ease; }

/* —— Premium FAQ Pagination Controls —— */
.kb-faq-pagination {
  margin-top: 40px;
  display: flex !important;
  justify-content: center !important;
  align-items: center !important;
  gap: 12px !important;
  background: rgba(255, 255, 255, 0.75) !important;
  backdrop-filter: blur(12px) !important;
  -webkit-backdrop-filter: blur(12px) !important;
  border: 1px solid rgba(90, 74, 58, 0.12) !important;
  padding: 8px 20px !important;
  border-radius: 16px !important;
  max-width: max-content !important;
  margin-left: auto !important;
  margin-right: auto !important;
  box-shadow: 0 10px 30px -10px rgba(90, 74, 58, 0.08) !important;
}

.kb-faq-pagination button {
  background: #ffffff !important;
  border: 1px solid rgba(90, 74, 58, 0.15) !important;
  color: #5c5348 !important;
  padding: 8px 16px !important;
  font-size: 13px !important;
  font-weight: 600 !important;
  border-radius: 10px !important;
  cursor: pointer !important;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1) !important;
  outline: none !important;
}

.kb-faq-pagination button:hover:not(:disabled) {
  background: #b45309 !important;
  color: #ffffff !important;
  border-color: #b45309 !important;
  transform: translateY(-1.5px) !important;
  box-shadow: 0 4px 10px rgba(180, 83, 9, 0.18) !important;
}

.kb-faq-pagination button:disabled {
  opacity: 0.35 !important;
  cursor: not-allowed !important;
}

.kb-faq-page-select {
  background: #ffffff !important;
  border: 1px solid rgba(90, 74, 58, 0.18) !important;
  color: #4b3f33 !important;
  padding: 8px 36px 8px 16px !important;
  font-size: 13.5px !important;
  font-weight: 600 !important;
  border-radius: 10px !important;
  cursor: pointer !important;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1) !important;
  outline: none !important;
  appearance: none !important;
  -webkit-appearance: none !important;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%23b45309'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2.5' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E") !important;
  background-repeat: no-repeat !important;
  background-position: right 12px center !important;
  background-size: 14px !important;
  min-width: 160px !important;
  box-shadow: inset 0 1px 2px rgba(0,0,0,0.02) !important;
  margin: 0 4px !important;
}

.kb-faq-page-select:hover {
  border-color: #b45309 !important;
  box-shadow: 0 4px 10px rgba(180, 83, 9, 0.08) !important;
}

/* —— Premium Knowledge Graph Visuals (Academic Force Layout) —— */

/* Zero Jitter/Shaking Overlay Concept */
.kb-graph-node-group {
  transition: opacity 0.2s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

.kb-graph-node-sensor {
  fill: transparent !important;
  stroke: none !important;
  pointer-events: all !important;
  cursor: pointer !important;
}

.kb-graph-node-shape {
  pointer-events: none !important; /* Completely delegating all hover detection to fixed-size invisible overlay sensor */
  transition: r 0.2s cubic-bezier(0.4, 0, 0.2, 1), 
              fill 0.2s cubic-bezier(0.4, 0, 0.2, 1), 
              stroke 0.2s cubic-bezier(0.4, 0, 0.2, 1), 
              stroke-width 0.2s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

.kb-graph-node-label {
  font-family: "Outfit", -apple-system, sans-serif !important;
  pointer-events: none !important;
  user-select: none !important;
  fill: #f8fafc !important; /* High contrast bright white for dark immersive graph gradient */
  text-shadow: none !important; /* Flat design style, no fuzzy white glow */
  font-size: 11px !important;
  font-weight: 700 !important;
  paint-order: stroke fill !important;
  stroke: #16213e !important; /* Deep dark slate outline halo for perfect legibility */
  stroke-width: 4px !important;
  stroke-linejoin: round !important;
  transition: font-size 0.2s cubic-bezier(0.4, 0, 0.2, 1), 
              dy 0.2s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

/* =========================================================================
   DEEP INK ENGINEERING — v8 PREMIUM OVERLAY
   Editorial-grade refresh: warm paper light mode, deep ink dark mode,
   sapphire primary, champagne accent. Loaded last so it wins by cascade.
   ========================================================================= */

:root {
  /* Brand */
  --ink-bg: #F6F4EC;            /* warm paper */
  --ink-bg-soft: #EFEBDE;
  --ink-surface: #FFFFFF;
  --ink-surface-2: #FBFAF4;
  --ink-text: #0E1422;          /* deep ink */
  --ink-text-soft: #2A3245;
  --ink-text-muted: #5B6478;
  --ink-line: rgba(14, 20, 34, 0.10);
  --ink-line-strong: rgba(14, 20, 34, 0.18);
  --ink-rule: rgba(14, 20, 34, 0.08);

  --ink-primary: #3B47D9;       /* sapphire-violet, dignified */
  --ink-primary-hover: #2D38C4;
  --ink-primary-soft: rgba(59, 71, 217, 0.08);
  --ink-primary-strong: #1F2A9E;

  --ink-accent: #B68A4E;        /* champagne — editorial signal */
  --ink-accent-strong: #946832;
  --ink-accent-soft: rgba(182, 138, 78, 0.10);

  --ink-success: #1F7A4D;
  --ink-warning: #B45309;
  --ink-danger:  #B0263C;

  /* Typography scales */
  --ink-font-display: "Newsreader", "Source Serif 4", "Source Serif Pro", "Lyon Text", Georgia, "Times New Roman", serif;
  --ink-font-body: "Inter", "Outfit", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --ink-font-mono: "JetBrains Mono", "SF Mono", ui-monospace, Consolas, "Liberation Mono", monospace;

  /* Shadows — layered, low-noise */
  --ink-shadow-xs: 0 1px 0 rgba(14,20,34,0.04), 0 1px 2px rgba(14,20,34,0.04);
  --ink-shadow-sm: 0 1px 0 rgba(14,20,34,0.04), 0 4px 12px -4px rgba(14,20,34,0.10);
  --ink-shadow-md: 0 1px 0 rgba(14,20,34,0.04), 0 12px 28px -16px rgba(14,20,34,0.18);
  --ink-shadow-lg: 0 1px 0 rgba(14,20,34,0.06), 0 28px 60px -32px rgba(14,20,34,0.26);
  --ink-shadow-glow: 0 0 0 1px rgba(59,71,217,0.12), 0 16px 40px -20px rgba(59,71,217,0.40);

  /* Radii */
  --ink-r-xs: 6px;
  --ink-r-sm: 10px;
  --ink-r-md: 14px;
  --ink-r-lg: 20px;
  --ink-r-xl: 28px;
  --ink-r-pill: 999px;
}

/* ---- Global type ---- */
html { scroll-behavior: smooth; }
body {
  font-family: var(--ink-font-body) !important;
  color: var(--ink-text) !important;
  background: var(--ink-bg) !important;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  letter-spacing: -0.005em;
}
body::before {
  /* Replace noise overlay with subtle engineering blueprint grid */
  background:
    linear-gradient(rgba(14,20,34,0.025) 1px, transparent 1px) 0 0 / 32px 32px,
    linear-gradient(90deg, rgba(14,20,34,0.025) 1px, transparent 1px) 0 0 / 32px 32px !important;
  opacity: 1 !important;
  z-index: 0 !important;
  mask-image: radial-gradient(ellipse at top, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at top, black 30%, transparent 75%);
}

h1, h2, h3, h4, .ink-display {
  font-family: var(--ink-font-display) !important;
  font-feature-settings: "ss01" on, "ss02" on, "kern" on, "liga" on, "calt" on;
  letter-spacing: -0.02em;
  color: var(--ink-text);
}
h1, .ink-display-lg { line-height: 1.08; }
h2 { line-height: 1.15; }
h3 { line-height: 1.25; }

.eyebrow, .ink-eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 11px;
  font-weight: 700;
  color: var(--ink-accent-strong);
  font-family: var(--ink-font-body) !important;
}

/* ---- Topbar — refined editorial header ---- */
.topbar {
  background: rgba(246, 244, 236, 0.86) !important;
  backdrop-filter: saturate(140%) blur(14px) !important;
  -webkit-backdrop-filter: saturate(140%) blur(14px) !important;
  border-bottom: 1px solid var(--ink-line) !important;
  box-shadow: 0 1px 0 rgba(14,20,34,0.04);
}
.topbar-inner { padding-top: 14px; padding-bottom: 14px; }
.brand {
  font-family: var(--ink-font-display) !important;
  font-weight: 600 !important;
  letter-spacing: -0.02em;
  font-size: 19px;
  color: var(--ink-text) !important;
  display: inline-flex; align-items: center; gap: 10px;
}
.brand-badge {
  display: inline-grid; place-items: center;
  width: 30px; height: 30px;
  background: var(--ink-text);
  color: var(--ink-bg);
  border-radius: 8px;
  font-family: var(--ink-font-body) !important;
  font-weight: 800;
  letter-spacing: 0.04em;
  font-size: 12px;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.06);
}
.nav-link {
  font-size: 14px !important;
  font-weight: 500 !important;
  color: var(--ink-text-soft) !important;
  padding: 8px 12px !important;
  border-radius: 8px !important;
  letter-spacing: 0 !important;
}
.nav-link:hover { background: var(--ink-primary-soft) !important; color: var(--ink-text) !important; }
.nav-link.active {
  background: var(--ink-text) !important;
  color: var(--ink-bg) !important;
  box-shadow: 0 1px 0 rgba(255,255,255,0.06) inset;
}

/* ---- Site notice (announcement) — restrained champagne hairline ---- */
.site-notice {
  background: linear-gradient(180deg, #14182A 0%, #0E1422 100%) !important;
  border-bottom: 1px solid rgba(182,138,78,0.35) !important;
  box-shadow: none !important;
}
.site-notice-text { color: #E8E2D2 !important; font-weight: 500 !important; }
.site-notice-link { color: #E8C68A !important; text-decoration-color: rgba(232,198,138,0.55) !important; }
.site-notice-link:hover { color: #F7DDA8 !important; }

/* ---- Hero — CAD modelspace dark grid (industry viewport aesthetic) ---- */
/* Reference: AutoCAD / Inventor / Civil 3D modelspace default background. */
/* Flat dark slate-navy plate + 2-level grid (minor 24px, major 120px). */
.hero, .hero-premium, .hero-page, .hero-wide-rounded {
  position: relative;
  background-color: #1d2434 !important;
  background-image:
    /* major grid lines (every 5th = 120px) */
    linear-gradient(rgba(125, 158, 192, 0.16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(125, 158, 192, 0.16) 1px, transparent 1px),
    /* minor grid lines (every 24px) */
    linear-gradient(rgba(125, 158, 192, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(125, 158, 192, 0.07) 1px, transparent 1px) !important;
  background-size: 120px 120px, 120px 120px, 24px 24px, 24px 24px !important;
  background-position: 0 0, 0 0, 0 0, 0 0 !important;
  border: 1px solid rgba(255, 255, 255, 0.06) !important;
  border-top: 2px solid var(--ink-accent) !important;
  border-radius: var(--ink-r-xl) !important;
  overflow: hidden;
  transform: translate3d(0, 0, 0);
  -webkit-transform: translate3d(0, 0, 0);
  margin: 28px auto 32px;
  padding: 56px 48px !important;
  color: #E8ECF5 !important;
  box-shadow:
    0 24px 60px -28px rgba(0,0,0,0.55),
    inset 0 1px 0 rgba(255,255,255,0.05) !important;
}
/* Subtle vignette + accent glow on top of the grid for hierarchy and legibility. */
.hero::before, .hero-premium::before, .hero-page::before, .hero-wide-rounded::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(70rem 32rem at 50% -10%, rgba(59, 71, 217, 0.20), transparent 65%),
    radial-gradient(56rem 28rem at 100% 110%, rgba(20, 64, 90, 0.35), transparent 65%),
    radial-gradient(40rem 24rem at 0% 110%, rgba(14, 22, 38, 0.50), transparent 60%);
  pointer-events: none;
  opacity: 1;
}
.hero-inner, .hero-page-header-flex { position: relative; z-index: 1; }

.hero-title, .hero-page-title, .ink-hero-title {
  font-family: var(--ink-font-display) !important;
  font-weight: 600 !important;
  font-size: clamp(38px, 5.4vw, 64px) !important;
  line-height: 1.05 !important;
  letter-spacing: -0.025em !important;
  color: #F5F0E0 !important;
  text-shadow: 0 1px 2px rgba(0,0,0,0.35) !important;
  margin: 12px 0 14px !important;
}
.hero-sub, .ink-hero-sub, .hero-page .hero-page-lead {
  font-size: clamp(16px, 1.45vw, 19px) !important;
  line-height: 1.55 !important;
  color: rgba(232, 236, 245, 0.78) !important;
  max-width: 64ch;
}

/* Eyebrow pill — champagne on dark hero (scoped to hero context only) */
.hero-eyebrow-premium,
.hero-premium .eyebrow,
.hero .eyebrow,
.hero-page .hero-page-eyebrow,
.hero-page .eyebrow,
.hero-wide-rounded .eyebrow {
  display: inline-flex !important;
  align-items: center;
  gap: 8px;
  background: rgba(182, 138, 78, 0.14) !important;
  color: #E5C794 !important;
  border: 1px solid rgba(182, 138, 78, 0.42) !important;
  text-transform: uppercase !important;
  letter-spacing: 0.18em !important;
  font-family: var(--ink-font-body) !important;
  font-size: 11px !important;
  font-weight: 700 !important;
  padding: 6px 14px !important;
  border-radius: 999px !important;
  margin-bottom: 18px !important;
  width: fit-content;
}

/* Generic eyebrow (cards / non-hero contexts) — light theme champagne */
.eyebrow {
  display: inline-block;
  font-family: var(--ink-font-body);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 10.5px;
  font-weight: 700;
  color: var(--ink-accent-strong);
  background: var(--ink-accent-soft);
  border: 1px solid rgba(182, 138, 78, 0.32);
  padding: 4px 11px;
  border-radius: 999px;
}

/* Hero stats / breadcrumb / small links — readable on dark */
.hero-page .stats-row,
.hero-page .stats-item,
.hero .stats-row,
.hero .stats-item {
  color: rgba(232, 236, 245, 0.85) !important;
}
.hero-page .stats-item strong,
.hero .stats-item strong { color: #F5F0E0 !important; }

.hero-search-shell, .hero-page-actions .search-row {
  background: rgba(255, 255, 255, 0.06) !important;
  border: 1px solid rgba(255, 255, 255, 0.14) !important;
  backdrop-filter: blur(8px);
  box-shadow:
    0 10px 30px -12px rgba(0,0,0,0.5),
    inset 0 1px 0 rgba(255,255,255,0.06) !important;
  border-radius: var(--ink-r-pill) !important;
  padding: 4px !important;
  margin-top: 8px;
}
.hero-search-shell input[type="text"],
.hero-page-actions .search-row input[type="text"] {
  border: none !important;
  background: transparent !important;
  padding: 14px 22px !important;
  font-size: 15px !important;
  color: #F5F0E0 !important;
}
.hero-search-shell input[type="text"]::placeholder,
.hero-page-actions .search-row input[type="text"]::placeholder {
  color: rgba(232, 236, 245, 0.5) !important;
}

/* CTA buttons inside hero — make primary stand out on dark */
.hero .btn-primary,
.hero-premium .btn-primary,
.hero-page .btn-primary {
  background: var(--ink-accent, #B68A4E) !important;
  color: #0A0F1A !important;
  border-color: var(--ink-accent, #B68A4E) !important;
  font-weight: 700 !important;
}
.hero .btn-primary:hover,
.hero-premium .btn-primary:hover,
.hero-page .btn-primary:hover {
  background: #C99F66 !important;
  border-color: #C99F66 !important;
}
.hero .btn:not(.btn-primary),
.hero-premium .btn:not(.btn-primary),
.hero-page .btn:not(.btn-primary) {
  background: rgba(255,255,255,0.04) !important;
  color: #E8ECF5 !important;
  border-color: rgba(255,255,255,0.18) !important;
}
.hero .btn:not(.btn-primary):hover,
.hero-premium .btn:not(.btn-primary):hover,
.hero-page .btn:not(.btn-primary):hover {
  background: rgba(255,255,255,0.08) !important;
  border-color: rgba(255,255,255,0.28) !important;
}

/* Breadcrumb on dark hero (KB page hero) */
.hero .ink-breadcrumbs,
.hero-premium .ink-breadcrumbs,
.hero-page .ink-breadcrumbs { color: rgba(232,236,245,0.7) !important; }
.hero .ink-breadcrumbs a,
.hero-premium .ink-breadcrumbs a,
.hero-page .ink-breadcrumbs a { color: rgba(229, 199, 148, 0.95) !important; }

/* ---- Buttons — sober, confident ---- */
.btn {
  font-family: var(--ink-font-body) !important;
  font-size: 14px !important;
  font-weight: 600 !important;
  letter-spacing: 0 !important;
  padding: 11px 18px !important;
  border-radius: var(--ink-r-pill) !important;
  border: 1px solid var(--ink-line-strong) !important;
  background: #FFFFFF !important;
  color: var(--ink-text) !important;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease, color .15s ease;
  box-shadow: var(--ink-shadow-xs);
}
.btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--ink-shadow-sm);
  background: #F8F6EE !important;
}
.btn-primary, .btn.btn-primary, .btn-premium-primary {
  background: var(--ink-text) !important;
  color: #F6F4EC !important;
  border-color: var(--ink-text) !important;
  box-shadow: var(--ink-shadow-md);
}
.btn-primary:hover, .btn.btn-primary:hover, .btn-premium-primary:hover {
  background: #1B2336 !important;
  color: #FFFFFF !important;
}
.btn-premium-secondary {
  background: var(--ink-primary) !important;
  color: #FFFFFF !important;
  border-color: var(--ink-primary) !important;
}
.btn-premium-secondary:hover { background: var(--ink-primary-hover) !important; }
.btn-premium-ghost {
  background: transparent !important;
  color: var(--ink-text-soft) !important;
  border: 1px dashed var(--ink-line-strong) !important;
}
.btn-premium-ghost:hover { border-style: solid; color: var(--ink-text) !important; }




/* ---- Cards — bevelled, editorial ---- */
.card, .card-glass, .kb-quick, .kb-feature, .panel, .kb-main, .tutorial-item, .news-curated-item, .kb-detail-card, .kb-people, .kb-person {
  background: var(--ink-surface) !important;
  border: 1px solid var(--ink-line) !important;
  border-radius: var(--ink-r-lg) !important;
  box-shadow: var(--ink-shadow-sm) !important;
  position: relative;
}
.card::before, .card-glass::before, .kb-quick::before, .kb-feature::before {
  content: "";
  position: absolute; left: 0; right: 0; top: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--ink-accent) 30%, var(--ink-accent) 70%, transparent);
  opacity: 0.25;
  border-radius: var(--ink-r-lg) var(--ink-r-lg) 0 0;
  pointer-events: none;
}
.card:hover, .card-glass:hover, .kb-quick:hover, .kb-feature:hover, .tutorial-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--ink-shadow-md) !important;
  border-color: var(--ink-line-strong) !important;
}
.card h3, .card-glass h3, .kb-quick h3, .kb-feature h3 {
  font-family: var(--ink-font-display) !important;
  font-weight: 600 !important;
  color: var(--ink-text) !important;
  letter-spacing: -0.015em !important;
  font-size: 19px !important;
  line-height: 1.28 !important;
}
.card .meta, .card-glass .meta, .meta {
  color: var(--ink-text-muted) !important;
  font-size: 14px !important;
  line-height: 1.55 !important;
}

/* ---- Section heads ---- */
.section-head { padding: 6px 0 14px; border-bottom: 1px solid var(--ink-rule); margin-bottom: 18px; }
.section-title {
  font-family: var(--ink-font-display) !important;
  font-size: clamp(22px, 2vw, 28px) !important;
  letter-spacing: -0.018em !important;
  color: var(--ink-text) !important;
  font-weight: 600 !important;
}
.section-title::before {
  content: "";
  display: inline-block;
  width: 22px; height: 2px;
  background: var(--ink-accent);
  vertical-align: middle;
  margin-right: 12px; margin-bottom: 6px;
  border-radius: 1px;
}
.section-note { color: var(--ink-text-muted) !important; font-size: 13px !important; }

/* ---- Chips / Tags ---- */
.chip, .tag, .kb-tag {
  font-family: var(--ink-font-body) !important;
  font-size: 12px !important;
  font-weight: 600 !important;
  letter-spacing: 0 !important;
  padding: 6px 12px !important;
  border-radius: var(--ink-r-pill) !important;
  border: 1px solid var(--ink-line-strong) !important;
  background: var(--ink-surface) !important;
  color: var(--ink-text-soft) !important;
}
.chip:hover, .tag:hover, .kb-tag:hover {
  background: var(--ink-primary-soft) !important;
  border-color: var(--ink-primary) !important;
  color: var(--ink-primary-strong) !important;
}
.chip.active, .tag.active, .kb-tag.kb-active, .chip.is-active {
  background: var(--ink-text) !important;
  color: var(--ink-bg) !important;
  border-color: var(--ink-text) !important;
}
.chip.pill-warn, .pill-warn {
  background: var(--ink-accent-soft) !important;
  color: var(--ink-accent-strong) !important;
  border-color: rgba(182,138,78,0.45) !important;
}
.chip.pill-free, .badge-free {
  background: rgba(31,122,77,0.10) !important;
  color: var(--ink-success) !important;
  border-color: rgba(31,122,77,0.30) !important;
}
.chip.pill-paid, .badge-paid {
  background: rgba(176,38,60,0.08) !important;
  color: var(--ink-danger) !important;
  border-color: rgba(176,38,60,0.28) !important;
}

/* ---- KB sidebar — refined portal rail ---- */
.kb-app { gap: 28px; }
.kb-rail, .kb-sidebar, .kb-sidebar--portal {
  background: var(--ink-surface-2) !important;
  border: 1px solid var(--ink-line) !important;
  border-radius: var(--ink-r-lg) !important;
  box-shadow: var(--ink-shadow-xs) !important;
  padding: 18px !important;
}
.kb-rail-toolbar { border-bottom: 1px solid var(--ink-rule); padding-bottom: 10px; margin-bottom: 12px; }
.kb-rail-toolbar-label {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 10px;
  font-weight: 700;
  color: var(--ink-text-muted);
  font-family: var(--ink-font-body) !important;
}
.kb-portal-search {
  background: #FFFFFF !important;
  border: 1px solid var(--ink-line-strong) !important;
  border-radius: var(--ink-r-md) !important;
  padding: 10px 14px !important;
  font-size: 13px !important;
  color: var(--ink-text) !important;
}
.kb-portal-search:focus { outline: 2px solid var(--ink-primary-soft); border-color: var(--ink-primary) !important; }

.kb-index-box { border-radius: var(--ink-r-md); padding: 12px 14px; background: rgba(14,20,34,0.025); border: 1px solid var(--ink-line); }
.kb-index-title { font-family: var(--ink-font-display) !important; color: var(--ink-text) !important; font-size: 14px !important; letter-spacing: 0 !important; }
.kb-index-link, .kb-side-link, .kb-subnav-link {
  font-size: 13.5px !important;
  color: var(--ink-text-soft) !important;
  padding: 7px 10px !important;
  border-radius: 8px !important;
}
.kb-index-link:hover, .kb-side-link:hover, .kb-subnav-link:hover {
  background: var(--ink-primary-soft) !important;
  color: var(--ink-primary-strong) !important;
}
.kb-index-link.active, .kb-side-link.active, .kb-subnav-link.active {
  background: var(--ink-text) !important;
  color: var(--ink-bg) !important;
}
.kb-nav-toggle {
  font-family: var(--ink-font-body) !important;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 10.5px !important;
  font-weight: 700 !important;
  color: var(--ink-text-muted) !important;
  padding: 6px 8px !important;
}

/* ---- KB main column ---- */
.kb-portal-title, .kb-title {
  font-family: var(--ink-font-display) !important;
  font-size: clamp(28px, 3.6vw, 44px) !important;
  letter-spacing: -0.022em !important;
  font-weight: 600 !important;
  color: var(--ink-text) !important;
}
.kb-portal-tagline { color: var(--ink-text-soft) !important; font-size: 16px !important; }
.kb-portal-soft-lede { color: var(--ink-text-muted) !important; }
.kb-portal-soft-lede a { color: var(--ink-primary) !important; border-bottom: 1px dashed var(--ink-primary); }






.kb-about { border-left: 3px solid var(--ink-primary); padding-left: 18px; background: var(--ink-primary-soft); border-radius: var(--ink-r-md); padding: 16px 20px; }

/* ---- Concept page article body ---- */
.kb-concept-detail {
  background: var(--ink-surface) !important;
  border: 1px solid var(--ink-line) !important;
  border-radius: var(--ink-r-lg) !important;
  padding: 40px clamp(20px, 4vw, 56px) !important;
  box-shadow: var(--ink-shadow-sm) !important;
}
.kb-concept-detail h1 { font-family: var(--ink-font-display) !important; color: var(--ink-text) !important; }
.kb-concept-detail p, .kb-concept-detail li { font-size: 16.5px; line-height: 1.7; color: var(--ink-text-soft); }
.kb-concept-detail .hero-sub { color: var(--ink-text-soft) !important; }
.kb-concept-detail a {
  color: var(--ink-primary) !important;
  border-bottom: 1px solid rgba(59,71,217,0.35);
}
.kb-concept-detail a:hover { border-bottom-color: var(--ink-primary); }

/* ---- Footer — engineering masthead ---- */
.footer, .footer.site-footer, .site-footer {
  background: linear-gradient(180deg, #0E1422 0%, #060911 100%) !important;
  color: #C8CFDD !important;
  border-top: 1px solid rgba(182,138,78,0.35) !important;
  margin-top: 60px !important;
}
.footer::before, .footer.site-footer::before {
  content: "";
  display: block;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--ink-accent), transparent);
  opacity: 0.5;
}
.site-footer-inner { padding: 32px clamp(20px, 4vw, 48px) 8px !important; gap: 32px; margin-bottom: 0 !important; }
.site-footer-brand .site-footer-tagline {
  font-family: var(--ink-font-display) !important;
  font-size: 22px !important;
  color: #F2EEDF !important;
  letter-spacing: -0.02em;
}
.site-footer-brand .site-footer-desc { color: #97A0B2 !important; font-size: 13.5px !important; line-height: 1.65 !important; }
.site-footer-heading {
  font-family: var(--ink-font-body) !important;
  font-size: 11px !important;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--ink-accent) !important;
  font-weight: 700 !important;
  margin-bottom: 14px !important;
}
.site-footer-links a {
  color: #C2C8D4 !important;
  font-size: 13.5px !important;
  line-height: 1.95 !important;
  transition: color .15s ease;
}
.site-footer-links a:hover { color: #F7E7C0 !important; }

/* ---- Graph immersive backdrop ---- */
.kb-graph-stage--immersive,
.kb-graph-stage--immersive.graph-wrapper-kb {
  background: radial-gradient(70rem 36rem at 50% 20%, #18223C 0%, #0B1020 60%, #060911 100%) !important;
  border: 1px solid rgba(182,138,78,0.18) !important;
  border-radius: var(--ink-r-xl) !important;
}
.kb-graph-toolbar {
  background: rgba(15, 20, 36, 0.85);
  border: 1px solid rgba(182,138,78,0.18);
  border-radius: var(--ink-r-pill);
  backdrop-filter: blur(8px);
  padding: 6px 8px;
}
.kb-graph-toolbar .kb-tag {
  background: transparent !important;
  border-color: rgba(232,226,210,0.20) !important;
  color: #D8DEE8 !important;
}
.kb-graph-toolbar .kb-tag.kb-active,
.kb-graph-toolbar .kb-tag:hover {
  background: var(--ink-accent) !important;
  color: #15110A !important;
  border-color: var(--ink-accent) !important;
}

/* ---- E-E-A-T editorial signals ---- */
.ink-byline {
  font-family: var(--ink-font-body) !important;
  font-size: 13px;
  color: var(--ink-text-muted);
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  padding: 14px 0;
  border-top: 1px solid var(--ink-rule);
  border-bottom: 1px solid var(--ink-rule);
  margin: 18px 0 28px;
}
.ink-byline strong { color: var(--ink-text); font-weight: 600; }



.ink-source-list {
  list-style: none;
  padding: 0;
  margin: 12px 0 0;
  border-top: 1px solid var(--ink-rule);
}
.ink-source-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--ink-rule);
  font-size: 14px;
  color: var(--ink-text-muted);
}
.ink-source-list a { color: var(--ink-primary); border-bottom: 1px dashed rgba(59,71,217,0.35); }

/* ---- Breadcrumb refinement ---- */
.kb-faq-breadcrumbs {
  font-family: var(--ink-font-body) !important;
  font-size: 12.5px !important;
  color: var(--ink-text-muted) !important;
  letter-spacing: 0.02em;
}
.kb-faq-breadcrumbs a {
  color: var(--ink-text-soft) !important;
  border-bottom: 1px dotted var(--ink-line-strong);
}
.kb-faq-breadcrumbs a:hover { color: var(--ink-primary) !important; border-bottom-color: var(--ink-primary); }

/* ---- DARK MODE — Deep Ink ---- */


/* ---- Responsive polish ---- */
@media (max-width: 768px) {
  .hero, .hero-premium, .hero-page, .hero-wide-rounded { padding: 36px 22px !important; border-radius: var(--ink-r-lg) !important; }
  .hero-title, .hero-page-title { font-size: clamp(28px, 7vw, 38px) !important; }
  .section-title { font-size: 22px !important; }
  .kb-concept-detail { padding: 28px 20px !important; }
  .site-footer-inner { padding: 28px 20px 8px !important; gap: 28px; flex-direction: column; margin-bottom: 0 !important; }
}

/* ============================================================
   v8 hotfix — KB portal sidebar + subnav contrast repair
   Issues fixed:
   - Portal sidebar background was dark-gradient but Deep Ink overlay
     forced dark text on the inner panels → invisible labels.
   - Subnav had a dark gradient with low-contrast text after overlay.
   Strategy: rewrite portal sidebar + subnav to the LIGHT-on-paper
   palette consistent with the rest of Deep Ink Engineering.
   ============================================================ */

/* Portal sidebar: warm-paper background, dark text */
.kb-sidebar.kb-sidebar--portal,
body[data-page="knowledge"] .kb-sidebar.kb-sidebar--portal {
  background: var(--ink-bg-soft) !important;
  color: var(--ink-text-soft) !important;
  border-right: 1px solid var(--ink-line) !important;
  box-shadow: 1px 0 0 var(--ink-line) !important;
}

.kb-sidebar--portal .kb-portal-rail-label,
.kb-sidebar--portal .kb-rail-label,
.kb-sidebar--portal .kb-nav-title {
  color: var(--ink-text-muted) !important;
  font-family: var(--ink-font-body) !important;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-weight: 700 !important;
}

.kb-sidebar--portal .kb-portal-search {
  background: #FFFFFF !important;
  color: var(--ink-text) !important;
  border: 1px solid var(--ink-line-strong) !important;
}
.kb-sidebar--portal .kb-portal-search::placeholder { color: var(--ink-text-muted) !important; }

.kb-sidebar--portal .kb-index-box {
  background: #FFFFFF !important;
  border: 1px solid var(--ink-line) !important;
  border-radius: 12px !important;
  padding: 14px 16px !important;
  box-shadow: 0 1px 0 rgba(14,20,34,0.02) !important;
}

.kb-sidebar--portal .kb-index-title {
  color: var(--ink-text-muted) !important;
  font-family: var(--ink-font-body) !important;
  font-weight: 700 !important;
  font-size: 11px !important;
  letter-spacing: 0.14em !important;
  text-transform: uppercase !important;
  margin-bottom: 10px !important;
}

.kb-sidebar--portal .kb-sidebar-taxonomy-note {
  color: var(--ink-text-muted) !important;
  font-size: 12px !important;
  line-height: 1.5 !important;
  margin: 0 0 12px !important;
}

.kb-sidebar--portal .kb-index-link,
.kb-sidebar--portal .kb-side-link {
  color: var(--ink-text-soft) !important;
  background: transparent !important;
  font-weight: 550 !important;
  font-size: 13.5px !important;
  padding: 7px 10px !important;
  border-radius: 8px !important;
}

.kb-sidebar--portal .kb-index-link span,
.kb-sidebar--portal .kb-side-link span {
  background: var(--ink-primary-soft) !important;
  color: var(--ink-primary-strong) !important;
  font-size: 11px !important;
  font-weight: 700 !important;
  padding: 2px 8px !important;
  border-radius: 999px !important;
  border: 1px solid rgba(59,71,217,0.18);
}

.kb-sidebar--portal .kb-index-link:hover,
.kb-sidebar--portal .kb-side-link:hover {
  background: var(--ink-primary-soft) !important;
  color: var(--ink-primary-strong) !important;
}

.kb-sidebar--portal .kb-index-link.active,
.kb-sidebar--portal .kb-side-link.active {
  background: var(--ink-text) !important;
  color: var(--ink-bg) !important;
}

.kb-sidebar--portal .kb-nav-toggle {
  color: var(--ink-text-muted) !important;
  background: transparent !important;
  font-family: var(--ink-font-body) !important;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-weight: 700 !important;
  font-size: 10.5px !important;
  padding: 8px 6px !important;
  border: none !important;
  border-radius: 8px !important;
}
.kb-sidebar--portal .kb-nav-toggle:hover {
  background: rgba(14,20,34,0.04) !important;
  color: var(--ink-text) !important;
}
.kb-sidebar--portal .kb-nav-group + .kb-nav-group {
  border-top: 1px solid var(--ink-line) !important;
}

/* Subnav (Overview / Software / Terms / FAQ / Graph / Profiles)
   was dark gradient with low-contrast text — make it paper-tone. */
.kb-subnav,
body[data-page="knowledge"] .kb-subnav {
  background: linear-gradient(180deg, var(--ink-surface, #FFFFFF) 0%, var(--ink-bg-soft, #EFEBDE) 100%) !important;
  border-bottom: 1px solid var(--ink-line) !important;
  border-left: 1px solid var(--ink-line) !important;
  box-shadow: inset 0 -1px 0 var(--ink-line) !important;
}
.kb-subnav-link {
  color: var(--ink-text-soft) !important;
  font-weight: 600 !important;
}
.kb-subnav-link:hover {
  background: var(--ink-primary-soft) !important;
  color: var(--ink-primary-strong) !important;
}
.kb-subnav-link.active {
  color: var(--ink-text) !important;
  background: transparent !important;
  border-bottom-color: var(--ink-accent, #B68A4E) !important;
}

/* Rail toggle button — make readable */
.kb-rail-toggle,
.kb-rail-toggle-btn,
.kb-sidebar--portal .kb-rail-toggle {
  background: #FFFFFF !important;
  color: var(--ink-text) !important;
  border: 1px solid var(--ink-line-strong) !important;
  border-radius: 8px !important;
  width: 34px !important;
  height: 34px !important;
  flex-shrink: 0 !important;
}

/* Dark mode: revert sidebar to deep-ink theme but keep correct contrast */


/* ============================================================
   v8_3_mobile — comprehensive mobile responsive layer
   The base styles target a desktop-first canvas. This block patches
   the broken pieces so the entire site reads cleanly on phones.

   Breakpoints:
     <= 1024px   tablet / small laptop fine-tuning
     <= 768px    phone-major break (most layout swaps happen here)
     <= 480px    very small phones (extra-tight typography)
   ============================================================ */

/* ---- Tablet sweep (1024px) ---- */
@media (max-width: 1024px) {
  .kb-main--portal { padding: 36px 24px 80px; }
  .kb-subnav { padding: 12px 20px; }
  .container { width: min(92vw, 1100px); }
}

/* ---- Phone sweep (768px) ---- */
@media (max-width: 768px) {
  /* Headline padding for the new CAD grid hero on phones */
  .hero, .hero-premium, .hero-page, .hero-wide-rounded {
    margin: 18px 12px 22px !important;
    padding: 36px 22px !important;
    border-radius: var(--ink-r-lg) !important;
    /* Make the grid feel tighter on small screens so each "cell" is still legible */
    background-size: 80px 80px, 80px 80px, 20px 20px, 20px 20px !important;
  }
  .hero-title, .hero-page-title, .ink-hero-title {
    font-size: clamp(26px, 8vw, 36px) !important;
    line-height: 1.12 !important;
  }
  .hero-sub, .ink-hero-sub, .hero-page .hero-page-lead {
    font-size: 14.5px !important;
    line-height: 1.55 !important;
  }
  .hero-page-header-flex {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 12px !important;
  }
  .hero-page-actions {
    align-items: flex-start !important;
    text-align: left !important;
    width: 100% !important;
  }
  .hero-page-actions .search-row { max-width: 100% !important; }
  .hero-search-shell, .hero-page-actions .search-row {
    flex-direction: column !important;
    align-items: stretch !important;
    gap: 8px !important;
    padding: 10px !important;
  }
  .hero.hero-premium .hero-cta-row {
    flex-direction: column !important;
    align-items: stretch !important;
    gap: 10px !important;
  }
  .hero.hero-premium .btn-premium-primary.btn-primary,
  .hero.hero-premium .btn-premium-secondary,
  .hero.hero-premium .btn-premium-ghost {
    width: 100% !important;
    justify-content: center !important;
  }
  .hero.hero-premium .hero-chips-row { justify-content: center; }
  .hero.hero-premium .hero-trust {
    grid-template-columns: 1fr 1fr !important;
    gap: 10px !important;
  }
  .hero-eyebrow-premium,
  .hero-premium .eyebrow,
  .hero .eyebrow,
  .hero-page .hero-page-eyebrow,
  .hero-page .eyebrow,
  .hero-wide-rounded .eyebrow {
    font-size: 10px !important;
    letter-spacing: 0.14em !important;
    padding: 5px 10px !important;
  }

  /* ---- KB portal: stack the rail above the stage on phones ---- */
  body[data-page="knowledge"] .kb-app,
  .kb-app {
    flex-direction: column !important;
    min-height: 0 !important;
    background: var(--ink-bg-soft) !important;
  }
  body[data-page="knowledge"] .kb-sidebar.kb-sidebar--portal,
  .kb-sidebar.kb-sidebar--portal {
    width: 100% !important;
    min-width: 0 !important;
    max-width: 100% !important;
    height: auto !important;
    max-height: 320px !important;
    position: relative !important;
    top: auto !important;
    overflow-y: auto !important;
    padding: 14px 14px !important;
    border-right: none !important;
    border-bottom: 1px solid var(--ink-line) !important;
    box-shadow: none !important;
    gap: 10px !important;
  }
  /* When the user clicks the collapse caret, fully hide the rail on mobile */
  body[data-page="knowledge"] .kb-app.kb-sidebar-collapsed .kb-sidebar.kb-sidebar--portal {
    max-height: 56px !important;
    overflow: hidden !important;
    padding: 8px 12px !important;
  }
  .kb-stage, .kb-main--portal, .kb-stage-scroll {
    width: 100% !important;
    min-width: 0 !important;
  }
  .kb-main--portal { padding: 24px 16px 64px !important; }
  .kb-main { padding: 22px 16px !important; border-radius: 14px !important; }

  /* KB subnav: horizontal scroll instead of wrap so labels stay readable */
  .kb-subnav,
  body[data-page="knowledge"] .kb-subnav {
    overflow-x: auto !important;
    flex-wrap: nowrap !important;
    padding: 10px 14px !important;
    gap: 6px !important;
    -webkit-overflow-scrolling: touch;
  }
  .kb-subnav::-webkit-scrollbar { height: 0; }
  .kb-subnav-link {
    flex-shrink: 0;
    padding: 6px 11px !important;
    font-size: 0.82rem !important;
    white-space: nowrap;
  }

  /* Software-profile two-column → one-column */
  .sw-grid, .sw-overview-grid, .sw-meta-grid, .vendor-grid,
  .sw-profile-grid, .kb-software-grid,

  .sw-at-a-glance dl,


  /* Knowledge graph: smaller stage, hide some heavy filters */
  .kb-graph-stage, .kb-graph-canvas, .kb-graph-wrap {
    width: 100% !important;
    max-width: 100% !important;
  }
  .kb-graph-controls, .kb-graph-filters {
    flex-direction: column !important;
    align-items: stretch !important;
    gap: 8px !important;
  }

  svg.kb-graph-svg, .kb-graph-svg { width: 100% !important; height: 60vh !important; }

  /* Generic content layout overrides */
  .container { width: 94% !important; }
  .grid-2, .grid-3, .grid-4, .grid-5,

  .tutorial-item, .news-item, .card { padding: 16px !important; }
  .card h3, .tutorial-item h3, .news-item h3 { font-size: 1.05rem !important; }

  /* Wide data tables: horizontal scroll. Key-value tables: stack labels */

  /* "At a glance" style key/value tables inside .kb-concept-section:
     stack the rows so the value column gets the full width. */
  .kb-concept-section table { width: 100% !important; font-size: 13.5px !important; }
  .kb-concept-section table th, .kb-concept-section table td {
    display: block !important;
    width: 100% !important;
    text-align: left !important;
    padding: 4px 0 !important;
    white-space: normal !important;
  }
  .kb-concept-section table th {
    padding-top: 14px !important;
    font-size: 11px !important;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--ink-text-muted, #6b7280) !important;
    font-weight: 700 !important;
  }
  .kb-concept-section table tr + tr th {
    border-top: 1px solid var(--ink-line, rgba(0,0,0,0.07)) !important;
    margin-top: 10px;
  }

  /* Breadcrumbs wrap nicely */
  .breadcrumbs, .kb-breadcrumbs, .kb-faq-breadcrumbs {
    flex-wrap: wrap;
    gap: 4px 6px;
    font-size: 0.82rem;
  }

  /* Editorial / concept body: tighter padding */
  .kb-concept-detail { padding: 22px 16px !important; }
  .kb-concept-detail h1 { font-size: 1.65rem !important; line-height: 1.2 !important; }
  .kb-concept-detail h2 { font-size: 1.2rem !important; }
  .kb-concept-detail h3 { font-size: 1.05rem !important; }
  .kb-concept-detail p, .kb-concept-detail li { font-size: 0.96rem !important; }
  .kb-concept-detail blockquote, .ink-callout { padding: 14px 16px !important; }

  /* Site notice / footer */
  .site-notice-inner { padding: 10px 14px !important; flex-wrap: wrap; gap: 8px; }
  .site-notice-text { font-size: 0.84rem !important; line-height: 1.45 !important; }
  .site-footer-inner {
    grid-template-columns: 1fr !important;
    gap: 24px !important;
    padding: 24px 16px 8px !important;
    margin-bottom: 0 !important;
  }
  .site-footer h4 { margin-top: 0; }

  /* Buttons: touch-friendly height + full-width by default in primary CTAs */
  .btn, .btn-primary, .btn-secondary, .btn-ghost,
  .hero-cta-row .btn { min-height: 44px; padding: 10px 18px; }

  /* Stats / kpis */

  .stats-row .stats-item { padding: 10px 12px; }

  /* Anchor hashlink scroll offset */
  :target { scroll-margin-top: 80px; }
}

/* ---- Very small phones (480px) ---- */
@media (max-width: 480px) {
  .hero, .hero-premium, .hero-page, .hero-wide-rounded {
    margin: 12px 8px 18px !important;
    padding: 28px 16px !important;
    background-size: 60px 60px, 60px 60px, 15px 15px, 15px 15px !important;
  }
  .hero-title, .hero-page-title, .ink-hero-title {
    font-size: clamp(22px, 8.5vw, 30px) !important;
  }
  .hero-sub, .ink-hero-sub, .hero-page .hero-page-lead {
    font-size: 13.5px !important;
  }
  .hero.hero-premium .hero-trust { grid-template-columns: 1fr !important; }

  .kb-subnav-link { font-size: 0.78rem !important; padding: 5px 9px !important; }
  .kb-main { padding: 18px 12px !important; }
  .kb-main--portal { padding: 18px 10px 56px !important; }
  .breadcrumbs, .kb-breadcrumbs, .kb-faq-breadcrumbs { font-size: 0.78rem; }
  .btn { font-size: 0.92rem !important; }
  .container { width: 96% !important; }
  .brand span { font-size: 1rem !important; }
}

/* ---- Print friendly (E-E-A-T compliance: printable concept pages) ---- */
@media print {
  .topbar, .site-notice, .kb-rail, .footer, .ink-callout { display: none !important; }
  body, body::before { background: #FFFFFF !important; }
  .kb-concept-detail { box-shadow: none !important; border: none !important; padding: 0 !important; }
}

@media (max-width: 768px) {
  /* 彻底削掉汉堡菜单顶部碍眼的一大截空白 */
  .nav-header {
    display: none !important;
  }

  /* 汉堡菜单顶部安全留白，彻底解决 Home 菜单项被遮挡的烦恼 */
  .nav {
    padding-top: 10px !important;
    padding-bottom: 10px !important;
  }

  /* 强行将侧栏从文档流脱离，变为优雅的滑出式抽屉，彻底消灭顶部的米色巨无霸空白区 */
  body[data-page="knowledge"] .kb-sidebar.kb-sidebar--portal {
    position: fixed !important;
    inset: 0 !important;
    width: 80% !important;
    max-width: 280px !important;
    height: 100vh !important;
    max-height: none !important;
    background: #ffffff !important;
    transform: translateX(-100%) !important;
    transition: transform 0.3s ease !important;
    z-index: 9999 !important;
    overflow-y: auto !important;
    padding: 24px 16px !important;
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.15) !important;
    border-radius: 0 !important;
    border: none !important;
    border-right: 1px solid var(--ink-line) !important;
    
    /* 强制内部子元素垂直堆叠排列，彻底解决并排挤变形的问题 */
    display: flex !important;
    flex-direction: column !important;
    gap: 16px !important;
  }

  /* 修复侧栏子容器，消除 Devin 顶部横条样式产生的并排拉伸 */
  body[data-page="knowledge"] .kb-sidebar.kb-sidebar--portal .kb-nav-group {
    width: 100% !important;
    flex: none !important;
    min-width: 0 !important;
    display: block !important;
    margin-bottom: 12px !important;
  }

  body[data-page="knowledge"] .kb-sidebar.kb-sidebar--portal .kb-index-box {
    width: 100% !important;
    display: block !important;
    box-sizing: border-box !important;
  }

  /* 展开状态（抽屉拉出显示） */
  body[data-page="knowledge"] .kb-app:not(.kb-sidebar-collapsed) .kb-sidebar.kb-sidebar--portal {
    transform: translateX(0) !important;
  }

  /* 展开状态下的内部工具栏，处于抽屉顶部正常渲染 */
  body[data-page="knowledge"] .kb-sidebar.kb-sidebar--portal .kb-rail-toolbar {
    position: relative !important;
    left: auto !important;
    top: auto !important;
    width: 100% !important;
    height: auto !important;
    display: flex !important;
    flex-direction: row !important;
    justify-content: space-between !important;
    align-items: center !important;
    border-bottom: 1px solid var(--ink-line) !important;
    padding-bottom: 10px !important;
    margin-bottom: 10px !important;
    background: transparent !important;
  }

  /* 折叠状态（即默认隐藏，抽屉收起） */
  body[data-page="knowledge"] .kb-app.kb-sidebar-collapsed .kb-sidebar.kb-sidebar--portal {
    transform: translateX(-100%) !important;
    max-height: none !important;
    padding: 24px 16px !important;
    overflow-y: auto !important;
  }

  /* 折叠状态下，在主屏幕左上角强行将开关工具栏拉出来贴顶，实现与 subnav 的像素级完美对齐 */
  body[data-page="knowledge"] .kb-app.kb-sidebar-collapsed .kb-rail-toolbar {
    position: fixed !important;
    left: 0 !important;
    top: 56px !important; /* 紧贴 56px 顶栏底边 */
    width: 52px !important;
    height: 48px !important; /* 与 subnav 顶高完全一致 */
    z-index: 10001 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    background: var(--ink-bg-soft) !important; /* 视觉无缝融合 */
    border: none !important;
    border-bottom: 1px solid var(--ink-line) !important;
    padding: 0 !important;
    margin: 0 !important;
  }

  /* 强制让开关按钮在移动端处于绝对悬浮的显眼层 */
  body[data-page="knowledge"] .kb-app.kb-sidebar-collapsed .kb-rail-toggle {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12) !important;
    background: #ffffff !important;
    border: 1px solid var(--ink-line-strong) !important;
    width: 34px !important;
    height: 34px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    border-radius: 8px !important;
  }

  .kb-sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    z-index: 998;
  }
  .kb-app.kb-sidebar-collapsed .kb-main { margin-left: 0; }
  .kb-portal-tile, .kb-detail-card {
    width: 100% !important;
    margin-bottom: 1rem;
  }
  .kb-portal-tile {
    display: block;
  }
  body[data-page="knowledge"] {
    font-size: 0.9rem;
    line-height: 1.5;
  }
  #kbGraphStage, .kb-graph-node-group { max-width: 100%; height: auto; }
}

/* ============================================================
   GSTACADEMY BRANDING & COLLAPSED SIDEBAR MOBILE FIXES
   ============================================================ */

/* ----------------------------------------------------
   1. Brand Logo Styling (Gstar in Oval + cad Underlined)
   ---------------------------------------------------- */
.brand {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: flex-start !important;
  margin-right: auto !important; /* Force logo strictly to the left */
  margin-left: -7px !important; /* Shift entire logo left by 7px (adjusted for perfect alignment) */
  gap: 0 !important;
  text-decoration: none !important;
}

.brand::after {
  content: none !important; /* Disable any old layout leftovers */
}

/* Solid transparent oval container for Gstar */
.brand .brand-badge {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  width: auto !important;
  height: auto !important;
  min-width: 0 !important;
  min-height: 0 !important;
  padding: 3px 8px !important; /* Comfortable oval padding — not too flat */
  border: 2px solid currentColor !important; /* Oval border outline matching context */
  border-radius: 999px !important; /* Perfect oval shape */
  background: transparent !important;
  box-shadow: none !important;
  margin-right: 0px !important; /* Move cademy to immediately touch the oval */
  color: inherit !important;
  font-size: 0 !important;
  line-height: 0 !important;
  text-shadow: none !important;
}

/* Inject "Gstar" inside the oval */
.brand .brand-badge::after {
  content: "Gstar" !important;
  font-size: 1.15rem !important;
  font-weight: 800 !important;
  color: currentColor !important;
  text-transform: none !important;
  line-height: 1 !important;
  font-family: "Outfit", "Inter", sans-serif !important;
}

/* Hide original Gstarcademy text and style inline span */
.brand span:not(.brand-badge) {
  font-size: 0 !important;
  display: inline-flex !important;
  align-items: center !important;
  line-height: 1 !important;
  color: inherit !important;
}

/* Inject "cad" with high quality underline */
.brand span:not(.brand-badge)::before {
  content: "cad" !important;
  font-size: 1.15rem !important;
  font-weight: 800 !important;
  color: inherit !important;
  text-decoration: underline !important;
  text-underline-offset: 3px !important;
  line-height: 1 !important;
  font-family: "Outfit", "Inter", sans-serif !important;
  text-transform: none !important;
  display: inline-block !important;
}

/* Inject "emy" plain next to it */
.brand span:not(.brand-badge)::after {
  content: "emy" !important;
  font-size: 1.15rem !important;
  font-weight: 800 !important;
  color: inherit !important;
  text-decoration: none !important;
  line-height: 1 !important;
  font-family: "Outfit", "Inter", sans-serif !important;
  text-transform: none !important;
  display: inline-block !important;
}

/* ----------------------------------------------------
   2. Mobile Sidebar Slide Fix & Floating Toggle
   ---------------------------------------------------- */
@media (max-width: 768px) {
  /* Use left transitions instead of transform to prevent containing-block trap, and offset top below subnav (64px header + 48px subnav = 112px) */
  body[data-page="knowledge"] .kb-sidebar.kb-sidebar--portal {
    top: 112px !important; /* Starts exactly below subnav bar to never cover it */
    height: calc(100vh - 112px) !important; /* Takes remaining height */
    left: -100% !important; /* Collapsed state position */
    transform: none !important; /* Free position: fixed descendants! */
    transition: left 0.3s ease !important;
  }

  /* When open, slide in from the left and start below subnav */
  body[data-page="knowledge"] .kb-app:not(.kb-sidebar-collapsed) .kb-sidebar.kb-sidebar--portal {
    left: 0 !important;
    top: 112px !important;
    height: calc(100vh - 112px) !important;
    transform: none !important;
  }

  body[data-page="knowledge"] .kb-app.kb-sidebar-collapsed .kb-sidebar.kb-sidebar--portal {
    left: -100% !important;
    top: 112px !important;
    height: calc(100vh - 112px) !important;
    transform: none !important;
  }

  /* Shunt the subnav to the right on mobile when collapsed so it doesn't get covered by the toggle button */
  body[data-page="knowledge"] .kb-app.kb-sidebar-collapsed .kb-subnav {
    padding-left: 56px !important; /* Move text 56px to the right for perfect clearance */
  }

  /* Style the collapsed toolbar as a viewport-fixed floating button centered vertically in subnav */
  body[data-page="knowledge"] .kb-app.kb-sidebar-collapsed .kb-rail-toolbar {
    position: fixed !important;
    left: 12px !important;
    top: 70px !important; /* Centered perfectly inside subnav bar (64px to 112px vertical zone) */
    width: auto !important;
    height: auto !important;
    z-index: 10001 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    background: transparent !important;
    border: none !important;
    padding: 0 !important;
    margin: 0 !important;
  }

  /* Make the collapsed toggle icon a clean, hovering circular action button */
  body[data-page="knowledge"] .kb-app.kb-sidebar-collapsed .kb-rail-toggle {
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15) !important;
    background: #ffffff !important;
    border: 1px solid var(--ink-line-strong) !important;
    width: 36px !important;
    height: 36px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    border-radius: 8px !important;
    cursor: pointer !important;
  }
}

/* ----------------------------------------------------
   3. Mobile Hamburger Menu Positioning & High Contrast
   ---------------------------------------------------- */
@media (max-width: 780px) {
  /* Elevate topbar z-index when mobile nav is open to prevent subnav (z-index 99) from covering the Home link */
  body[data-page="knowledge"] > .topbar:has(.nav.active) {
    z-index: 10005 !important;
  }

  /* Position hamburger relatively under topbar bottom edge to ignore notices and height shifts */
  .nav {
    position: absolute !important;
    top: 100% !important;
    margin-top: 8px !important;
    left: 16px !important;
    right: 16px !important;
    width: auto !important;
    display: none;
    opacity: 0;
    transform: translateY(-10px) !important;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.15) !important;
    overflow: visible !important; /* Ensure Home link or any other links are never cut off by height boundary */
  }

  .nav.active {
    display: flex !important;
    opacity: 1 !important;
    transform: translateY(0) !important;
  }

  /* Force highly legible dark text inside the white dropdown mobile drawer on all pages */
  body .topbar-inner .nav .nav-link {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
    color: #1e293b !important; /* High contrast dark Slate */
    background: transparent !important;
    padding: 12px 20px !important;
    font-size: 1.05rem !important;
    font-weight: 700 !important;
    text-align: left !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  /* Explicitly guarantee the Home menu item is forced visible on all pages */
  body .topbar-inner .nav .nav-link[data-nav="home"],
  body .topbar-inner .nav .nav-link[href*="index"] {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
  }

  body .topbar-inner .nav .nav-link:hover {
    background: #f1f5f9 !important;
    color: #0f172a !important;
  }

  /* Style active page links beautifully */
  body .topbar-inner .nav .nav-link.active,
  body[data-page="knowledge"] .topbar-inner .nav .nav-link.active {
    background: #0f172a !important;
    color: #ffffff !important;
  }
}

/* ------------------------------------------------------------------
   Modernized CAD Software Profiles Grid
   ------------------------------------------------------------------- */
.kb-software-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 24px;
}

.kb-software-card {
  background: var(--surface-strong, #ffffff);
  border: 1px solid var(--line-soft, #e2e8f0);
  border-radius: 16px;
  padding: 22px;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.03);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
  content-visibility: auto;
  contain-intrinsic-size: auto 280px;
}

.kb-software-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, #3b82f6, #6366f1);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.kb-software-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.08);
  border-color: #cbd5e1;
}

.kb-software-card:hover::before {
  opacity: 1;
}

.kb-software-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.kb-software-card-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(99, 102, 241, 0.1));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}

.kb-software-card-title {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text, #0f172a);
}

.kb-software-card-vendor {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted, #64748b);
  font-weight: 600;
}

.kb-software-card-body {
  font-size: 0.9rem;
  color: var(--text-muted, #475569);
  line-height: 1.55;
  margin-bottom: 18px;
  flex-grow: 1;
}

.kb-software-card-tag {
  display: inline-block;
  font-size: 0.75rem;
  padding: 3px 8px;
  background: #f1f5f9;
  color: #475569;
  border-radius: 6px;
  margin-top: 8px;
  font-weight: 500;
}

body[data-page="knowledge"] .kb-software-card-tag {
  background: #e8e2d8;
  color: #5f6777;
}

.kb-software-card-footer {
  border-top: 1px solid var(--line-soft, #f1f5f9);
  padding-top: 14px;
  display: flex;
  justify-content: flex-end;
}

.kb-software-card-link {
  font-size: 0.85rem;
  font-weight: 700;
  color: #2563eb;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.2s ease;
}

.kb-software-card-link:hover {
  gap: 8px;
  color: #1d4ed8;
}

/* ------------------------------------------------------------------
   Modernized Vendor Gateways Table Upgrades
   ------------------------------------------------------------------- */






body[data-page="knowledge"] .kb-table-row-hover:hover {
  background-color: rgba(244, 239, 233, 0.7) !important;
}

/* ------------------------------------------------------------------
   Interactive CAD Software Matchmaker
   ------------------------------------------------------------------- */
.kb-matchmaker-container {
  background: var(--surface, rgba(255, 255, 255, 0.94));
  border: 1px solid var(--line, #cbd5e1);
  border-radius: 24px;
  padding: 32px;
  margin-top: 40px;
  box-shadow: var(--shadow-lg, 0 20px 40px rgba(0, 0, 0, 0.05));
  position: relative;
  overflow: hidden;
}

body[data-page="knowledge"] .kb-matchmaker-container {
  background: rgba(252, 251, 248, 0.96);
  border-color: #dcd4c9;
}

.kb-matchmaker-container::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.03) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

.kb-matchmaker-header {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 600px;
  margin: 0 auto 28px;
}

.kb-matchmaker-main-title {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text, #0f172a);
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.kb-matchmaker-subtitle {
  font-size: 0.95rem;
  color: var(--muted, #64748b);
  line-height: 1.5;
}

.kb-matchmaker-step-tracker {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  margin-bottom: 32px;
  position: relative;
  z-index: 1;
}

.kb-matchmaker-step-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--line, #e2e8f0);
  transition: all 0.3s ease;
}

.kb-matchmaker-step-dot.active {
  background: #3b82f6;
  transform: scale(1.3);
  box-shadow: 0 0 8px rgba(59, 130, 246, 0.5);
}

.kb-matchmaker-step-dot.completed {
  background: #10b981;
}

.kb-matchmaker-steps-wrapper {
  position: relative;
  z-index: 1;
  min-height: 220px;
}

.kb-matchmaker-step-panel {
  display: none;
  animation: mmFadeInUp 0.4s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.kb-matchmaker-step-panel.active {
  display: block;
}

.kb-matchmaker-question {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text, #0f172a);
  text-align: center;
  margin-bottom: 24px;
}

.kb-matchmaker-options-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  max-width: 800px;
  margin: 0 auto;
}

.kb-matchmaker-option {
  background: var(--surface-strong, #ffffff);
  border: 2px solid var(--line-soft, #e2e8f0);
  border-radius: 16px;
  padding: 20px;
  cursor: pointer;
  text-align: center;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.01);
}

body[data-page="knowledge"] .kb-matchmaker-option {
  border-color: #e8e2d8;
}

.kb-matchmaker-option:hover {
  transform: translateY(-3px);
  border-color: #3b82f6;
  box-shadow: 0 8px 20px rgba(59, 130, 246, 0.08);
}

.kb-matchmaker-option.active {
  border-color: #3b82f6;
  background: linear-gradient(135deg, #eff6ff 0%, #dbfeea 100%);
  box-shadow: 0 8px 24px rgba(59, 130, 246, 0.12);
}

body[data-page="knowledge"] .kb-matchmaker-option.active {
  background: linear-gradient(135deg, #f7f3ec 0%, #eff6ff 100%);
  border-color: #2563eb;
}

.kb-matchmaker-option-icon {
  font-size: 2.2rem;
}

.kb-matchmaker-option-title {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text, #0f172a);
}

.kb-matchmaker-option-desc {
  font-size: 0.8rem;
  color: var(--muted, #64748b);
  line-height: 1.4;
  margin: 0;
}

.kb-matchmaker-controls {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 32px;
  position: relative;
  z-index: 1;
}

.kb-matchmaker-btn {
  padding: 12px 28px;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: 12px;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.kb-matchmaker-btn-prev {
  background: #f1f5f9;
  color: #475569;
  border: 1px solid #e2e8f0;
}

body[data-page="knowledge"] .kb-matchmaker-btn-prev {
  background: #e8e2d8;
  color: #5f6777;
  border-color: #cbd5e1;
}

.kb-matchmaker-btn-prev:hover {
  background: #e2e8f0;
}

.kb-matchmaker-btn-next {
  background: linear-gradient(135deg, #2563eb, #4f46e5);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

.kb-matchmaker-btn-next:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(37, 99, 235, 0.3);
}

.kb-matchmaker-btn-next:disabled {
  background: #cbd5e1;
  color: #94a3b8;
  box-shadow: none;
  cursor: not-allowed;
  transform: none;
}

/* Matchmaker Results Style */
.kb-matchmaker-results-card {
  background: #ffffff;
  border: 1px solid #3b82f6;
  border-radius: 20px;
  padding: 28px;
  box-shadow: 0 12px 32px rgba(37, 99, 235, 0.08);
  animation: mmFadeInUp 0.5s cubic-bezier(0.4, 0, 0.2, 1) forwards;
  max-width: 750px;
  margin: 0 auto;
}

body[data-page="knowledge"] .kb-matchmaker-results-card {
  background: #faf8f5;
  border-color: #2563eb;
}

.kb-matchmaker-results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid #eff6ff;
  padding-bottom: 16px;
  margin-bottom: 20px;
}

body[data-page="knowledge"] .kb-matchmaker-results-header {
  border-bottom-color: #e8e2d8;
}

.kb-matchmaker-results-badge {
  background: #dcfce7;
  color: #15803d;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 99px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.kb-matchmaker-results-title {
  margin: 0;
  font-size: 1.4rem;
  font-weight: 800;
  color: #0f172a;
}

.kb-matchmaker-results-desc {
  font-size: 0.95rem;
  line-height: 1.6;
  color: #475569;
  margin-bottom: 24px;
}

.kb-matchmaker-recommendations {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.kb-matchmaker-rec-item {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 16px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  transition: all 0.2s ease;
}

body[data-page="knowledge"] .kb-matchmaker-rec-item {
  background: #f4efe9;
  border-color: #cbd5e1;
}

.kb-matchmaker-rec-item:hover {
  border-color: #3b82f6;
  background: #ffffff;
}

.kb-matchmaker-rec-icon {
  font-size: 1.6rem;
}

.kb-matchmaker-rec-name {
  font-weight: 700;
  color: #0f172a;
  margin-bottom: 4px;
}

.kb-matchmaker-rec-reason {
  font-size: 0.8rem;
  color: #64748b;
  line-height: 1.45;
  margin: 0;
}

.kb-matchmaker-rec-links {
  margin-top: 10px;
  display: flex;
  gap: 16px;
  font-size: 0.78rem;
  position: relative;
  z-index: 10;
}

.kb-matchmaker-rec-link-a {
  text-decoration: none;
  font-weight: 700;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.kb-matchmaker-rec-link-a.study-link {
  color: #2563eb;
}

.kb-matchmaker-rec-link-a.study-link:hover {
  color: #1d4ed8;
  text-decoration: underline;
  transform: translateY(-0.5px);
}

.kb-matchmaker-rec-link-a.practice-link {
  color: #4f46e5;
}

.kb-matchmaker-rec-link-a.practice-link:hover {
  color: #3730a3;
  text-decoration: underline;
  transform: translateY(-0.5px);
}

.kb-matchmaker-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: flex-end;
}

.kb-matchmaker-action-btn {
  padding: 10px 20px;
  font-size: 0.85rem;
  font-weight: 700;
  border-radius: 8px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s ease;
}





.kb-matchmaker-action-btn-secondary {
  background: #f1f5f9;
  color: #475569;
  border: 1px solid #e2e8f0;
}

body[data-page="knowledge"] .kb-matchmaker-action-btn-secondary {
  background: #e8e2d8;
  color: #5f6777;
  border-color: #cbd5e1;
}

.kb-matchmaker-action-btn-secondary:hover {
  background: #cbd5e1;
}

@keyframes mmFadeInUp {
  from {
    opacity: 0;
    transform: translateY(15px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 600px) {
  .kb-matchmaker-container {
    padding: 20px 16px;
  }
  .kb-matchmaker-main-title {
    font-size: 1.5rem;
  }
  .kb-matchmaker-options-grid {
    grid-template-columns: 1fr;
  }
  .kb-matchmaker-actions {
    justify-content: center;
    width: 100%;
  }
  .kb-matchmaker-action-btn {
    width: 100%;
    justify-content: center;
  }
}

/* ==========================================================================
   CAD PREFIX TRIE SEARCH STYLES (Phase 8 Premium HUD Overlay)
   ========================================================================== */
.search-suggestions-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  z-index: 2000;
  margin-top: 8px;
  background: rgba(15, 23, 42, 0.9) !important; /* Sleek glass dark base */
  backdrop-filter: blur(20px) saturate(200%);
  -webkit-backdrop-filter: blur(20px) saturate(200%);
  border: 1px solid rgba(255, 255, 255, 0.12) !important;
  border-radius: 14px !important;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.6), 0 10px 10px -5px rgba(0, 0, 0, 0.5) !important;
  max-height: 380px;
  overflow-y: auto;
  padding: 8px !important;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transform-origin: top;
  animation: search-dropdown-fade 0.2s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes search-dropdown-fade {
  from { opacity: 0; transform: translateY(-4px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

/* Custom Scrollbar for Dropdown */
.search-suggestions-dropdown::-webkit-scrollbar {
  width: 6px;
}
.search-suggestions-dropdown::-webkit-scrollbar-track {
  background: transparent;
}
.search-suggestions-dropdown::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 99px;
}
.search-suggestions-dropdown::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.35);
}

.suggestion-item {
  display: flex !important;
  align-items: center !important;
  gap: 12px !important;
  padding: 10px 14px !important;
  border-radius: 8px !important;
  cursor: pointer !important;
  transition: all 0.15s ease !important;
  user-select: none !important;
  background: transparent !important;
  text-align: left !important;
  border-left: 3px solid transparent !important;
}

.suggestion-item:hover,
.suggestion-item.active {
  background: rgba(99, 102, 241, 0.18) !important; /* Vibrant Indigo accent */
  border-left-color: #6366f1 !important;
  padding-left: 11px !important;
}

.suggestion-badge {
  font-size: 9px !important;
  font-weight: 800 !important;
  text-transform: uppercase !important;
  padding: 3px 6px !important;
  border-radius: 5px !important;
  letter-spacing: 0.05em !important;
  flex-shrink: 0 !important;
  box-shadow: 0 2px 4px rgba(0,0,0,0.15);
  display: inline-block !important;
  line-height: 1 !important;
}

.badge-concept {
  background: rgba(168, 85, 247, 0.2) !important;
  color: #c084fc !important;
  border: 1px solid rgba(168, 85, 247, 0.4) !important;
}

.badge-product {
  background: rgba(14, 165, 233, 0.2) !important;
  color: #38bdf8 !important;
  border: 1px solid rgba(14, 165, 233, 0.4) !important;
}

.badge-vendor {
  background: rgba(245, 158, 11, 0.2) !important;
  color: #fbbf24 !important;
  border: 1px solid rgba(245, 158, 11, 0.4) !important;
}

.badge-domain {
  background: rgba(16, 185, 129, 0.2) !important;
  color: #34d399 !important;
  border: 1px solid rgba(16, 185, 129, 0.4) !important;
}

.suggestion-info {
  display: flex !important;
  flex-direction: column !important;
  flex-grow: 1 !important;
  min-width: 0 !important;
}

.suggestion-title {
  font-size: 13.5px !important;
  font-weight: 600 !important;
  color: #f8fafc !important;
  white-space: nowrap !important;
  overflow: hidden !important;
  text-overflow: ellipsis !important;
  display: block !important;
}

.suggestion-hint {
  font-size: 11px !important;
  color: #94a3b8 !important;
  white-space: nowrap !important;
  overflow: hidden !important;
  text-overflow: ellipsis !important;
  margin-top: 2px !important;
  display: block !important;
}

.suggestion-arrow {
  color: #64748b !important;
  font-size: 16px !important;
  transition: transform 0.15s ease, color 0.15s ease !important;
  margin-left: auto !important;
}

.suggestion-item:hover .suggestion-arrow,
.suggestion-item.active .suggestion-arrow {
  color: #818cf8 !important;
  transform: translateX(2.5px) !important;
}

.search-highlight {
  color: #818cf8 !important;
  font-weight: 800 !important;
  text-shadow: 0 0 8px rgba(99, 102, 241, 0.5) !important;
}

.suggestion-no-results {
  padding: 16px !important;
  text-align: center !important;
  font-size: 13px !important;
  color: #64748b !important;
  font-style: italic !important;
}

/* --- Phase 9: Interactive Skill Tree and Learning Pathways --- */
.roadmap-container {
  display: flex;
  flex-direction: column;
  gap: 28px;
  max-width: 56rem;
  margin-top: 24px;
}

.roadmap-track-selector {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
}

.roadmap-track-tab {
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-md);
  padding: 16px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  text-align: left;
  box-shadow: var(--shadow-sm);
}

.roadmap-track-tab:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
}

.roadmap-track-tab.active {
  background: var(--surface-solid);
  border-color: var(--accent);
  box-shadow: 0 0 16px rgba(37, 99, 235, 0.15), var(--shadow-md);
  position: relative;
}

.roadmap-track-tab.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 10%;
  right: 10%;
  height: 3px;
  background: var(--accent);
  border-radius: 3px 3px 0 0;
}

.roadmap-track-tab-title {
  font-size: 14.5px;
  font-weight: 750;
  color: var(--text-main);
}

.roadmap-track-tab-desc {
  font-size: 11.5px;
  color: var(--text-muted);
  line-height: 1.4;
}

.roadmap-viewport {
  background: var(--surface-solid);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-premium);
  display: flex;
  flex-direction: column;
  gap: 24px;
  transition: opacity 0.25s ease;
}

.roadmap-header-hud {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  border-bottom: 1px solid var(--line-light);
  padding-bottom: 20px;
}

.roadmap-header-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.roadmap-header-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-main);
}

.roadmap-header-meta {
  font-size: 12.5px;
  color: var(--text-muted);
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.roadmap-header-meta span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.progress-hud {
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 220px;
}

.progress-hud-label {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-main);
}

.progress-bar-bg {
  height: 8px;
  background: var(--bg-app-shell);
  border-radius: 4px;
  overflow: hidden;
  position: relative;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #3b82f6 0%, #6366f1 100%);
  width: 0%;
  border-radius: 4px;
  transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 0 10px rgba(99, 102, 241, 0.5);
}

.skill-tree-layout {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
  padding: 20px 0;
  position: relative;
}

.skill-tree-level {
  display: flex;
  justify-content: center;
  gap: 36px;
  flex-wrap: wrap;
  width: 100%;
  position: relative;
  z-index: 2;
}

.skill-node {
  background: var(--surface);
  border: 1.5px solid var(--line-strong);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  width: 210px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 12px;
  position: relative;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  user-select: none;
  box-shadow: var(--shadow-sm);
}

.skill-node:hover {
  transform: translateY(-2.5px);
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
}

.skill-node.selected {
  border-color: var(--accent);
  background: var(--accent-soft);
  box-shadow: 0 0 12px rgba(37, 99, 235, 0.15), var(--shadow-md);
}

.skill-node.mastered {
  border-color: #10b981;
  background: rgba(16, 185, 129, 0.04);
}

.skill-node.mastered:hover {
  box-shadow: 0 0 16px rgba(16, 185, 129, 0.2), var(--shadow-md);
}

.skill-node.mastered.selected {
  background: rgba(16, 185, 129, 0.08);
  border-color: #10b981;
}

.skill-node-checkbox {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 1.5px solid var(--line-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.2s ease;
  background: var(--surface-solid);
}

.skill-node.mastered .skill-node-checkbox {
  border-color: #10b981;
  background: #10b981;
  color: white;
}

.skill-node-checkbox::after {
  content: "✓";
  font-size: 11px;
  font-weight: 900;
  opacity: 0;
  transform: scale(0.6);
  transition: all 0.2s ease;
}

.skill-node.mastered .skill-node-checkbox::after {
  opacity: 1;
  transform: scale(1);
}

.skill-node-info {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.skill-node-title {
  font-size: 13.5px;
  font-weight: 750;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.skill-node-difficulty {
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 1px;
}

.skill-node.mastered .skill-node-difficulty {
  color: #10b981;
}

.roadmap-connector-svg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.roadmap-connector-path {
  fill: none;
  stroke: var(--line-strong);
  stroke-width: 2;
  transition: stroke 0.3s ease;
}

.roadmap-connector-path.active {
  stroke: #818cf8;
}

/* .skill-inspector — 已迁移至文件底部的 "Roadmap Drawer Panel Upgrade" 区块 */

.skill-inspector-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 12px;
}

.skill-inspector-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-main);
}

.skill-inspector-badge {
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 6px;
}

.skill-inspector-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

.skill-inspector-why {
  font-size: 13.5px;
  background: var(--surface-solid);
  padding: 14px 16px;
  border-radius: var(--radius-md);
  border-left: 3px solid var(--accent);
  color: var(--text-main);
  line-height: 1.55;
}

.skill-inspector-actions {
  display: flex;
  gap: 12px;
  margin-top: 8px;
  flex-wrap: wrap;
}

.btn-inspector {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-inspector-primary {
  background: var(--accent);
  color: white;
  border: none;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

.btn-inspector-primary:hover {
  background: #1d4ed8;
  transform: translateY(-1.5px);
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.3);
}

.btn-inspector-secondary {
  background: transparent;
  color: var(--text-main);
  border: 1.5px solid var(--line-strong);
}

.btn-inspector-secondary:hover {
  background: rgba(0, 0, 0, 0.03);
  border-color: var(--text-main);
}

.btn-inspector-reset {
  margin-left: auto;
  background: transparent;
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.2);
  font-size: 11.5px;
  padding: 6px 12px;
  border-radius: 6px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-inspector-reset:hover {
  background: rgba(239, 68, 68, 0.05);
  border-color: #ef4444;
}

/* responsive adjust */
@media (max-width: 768px) {
  .roadmap-viewport {
    padding: 20px;
  }
  .skill-tree-level {
    gap: 16px;
  }
  .skill-node {
    width: 100%;
  }
  .roadmap-connector-svg {
    display: none; /* Hide svg lines on mobile view */
  }
}

/* —— Premium Semantic Crossroads Navigation —— */
.kb-crossroad-card {
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

.kb-crossroad-card:hover {
  transform: translateY(-4px) !important;
  border-color: #b45309 !important;
  box-shadow: 0 12px 24px -8px rgba(180, 83, 9, 0.12) !important;
}

.kb-crossroad-card-btn {
  display: block !important;
  text-align: center !important;
  background: var(--ink-surface-1) !important;
  border: 1px solid rgba(90, 74, 58, 0.15) !important;
  color: #4b3f33 !important;
  padding: 8px 12px !important;
  border-radius: 8px !important;
  text-decoration: none !important;
  font-size: 12.5px !important;
  font-weight: 600 !important;
  transition: all 0.2s ease !important;
}

.kb-crossroad-card-btn:hover {
  background: #b45309 !important;
  color: #ffffff !important;
  border-color: #b45309 !important;
  transform: scale(1.015) !important;
}

.kb-crossroad-link-a {
  display: inline-block !important;
  background: var(--ink-surface-2) !important;
  border: 1px solid rgba(90, 74, 58, 0.1) !important;
  color: #5c5348 !important;
  padding: 4px 8px !important;
  border-radius: 6px !important;
  font-size: 12px !important;
  font-weight: 600 !important;
  text-decoration: none !important;
  transition: all 0.18s ease !important;
  margin-bottom: 2px !important;
}

.kb-crossroad-link-a:hover {
  border-color: #b45309 !important;
  color: #b45309 !important;
  background: rgba(180, 83, 9, 0.04) !important;
}

/* ----------------------------------------------------
   Quiz Self-Test CSS (自测卡样式)
   ---------------------------------------------------- */
.kb-quiz-card {
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.kb-quiz-option-btn:hover {
  background: var(--ink-surface-1) !important;
  border-color: #818cf8 !important;
  box-shadow: 0 4px 12px -2px rgba(129, 140, 248, 0.08);
  transform: translateY(-1px);
}

.kb-quiz-option-btn:focus {
  outline: 2px solid #818cf8;
  outline-offset: 2px;
}

/* Correct state (Light theme default) */
.kb-quiz-option-btn.correct {
  background: rgba(16, 185, 129, 0.08) !important;
  border-color: #10b981 !important;
  color: #064e3b !important;
}

.kb-quiz-option-btn.correct .kb-quiz-option-indicator {
  background: #10b981 !important;
  border-color: #10b981 !important;
  color: #ffffff !important;
}

/* Incorrect state (Light theme default) */
.kb-quiz-option-btn.incorrect {
  background: rgba(239, 68, 68, 0.08) !important;
  border-color: #ef4444 !important;
  color: #7f1d1d !important;
}

.kb-quiz-option-btn.incorrect .kb-quiz-option-indicator {
  background: #ef4444 !important;
  border-color: #ef4444 !important;
  color: #ffffff !important;
}

/* Disabled state once answered */
.kb-quiz-option-btn.disabled {
  pointer-events: none;
  cursor: default;
  opacity: 0.85;
}

.kb-quiz-option-btn.disabled:not(.correct):not(.incorrect) {
  opacity: 0.5;
}

/* Slide and Fade animation for feedback */
.kb-quiz-feedback-box {
  animation: kbSlideFadeIn 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes kbSlideFadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Dark mode overrides */


/* ----------------------------------------------------
   Verified Reviewer Popover Cards
   ---------------------------------------------------- */
.verified-reviewer-container {
  position: relative;
  display: inline-block;
  cursor: pointer;
}

.reviewer-badge-trigger {
  color: #3b82f6 !important;
  font-weight: 600;
  text-decoration: underline dotted;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.verified-badge-icon {
  background: #3b82f6 !important;
  color: #ffffff !important;
  border-radius: 50%;
  width: 14px;
  height: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 8px;
  font-weight: bold;
}

.reviewer-popover-card {
  position: absolute;
  bottom: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  width: 320px;
  background: var(--surface) !important;
  border: 1px solid var(--line) !important;
  border-radius: 16px;
  padding: 16px;
  box-shadow: var(--shadow-lg) !important;
  display: none;
  z-index: 100;
  text-align: left;
  opacity: 0;
  transition: opacity 0.2s ease, transform 0.2s ease;
  backdrop-filter: blur(16px);
}

.verified-reviewer-container:hover .reviewer-popover-card {
  display: block;
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.reviewer-popover-header {
  border-bottom: 1px solid var(--line-soft) !important;
  padding-bottom: 8px;
  margin-bottom: 8px;
  display: flex;
  flex-direction: column;
}

.reviewer-popover-name {
  font-weight: 700;
  color: var(--text) !important;
  font-size: 15px;
}

.reviewer-popover-role {
  font-size: 12px;
  color: #3b82f6 !important;
  font-weight: 600;
}

.reviewer-popover-bio {
  font-size: 12px;
  color: var(--muted) !important;
  line-height: 1.5;
  margin: 0 0 10px 0;
}











/* Feedback Section styling */
.feedback-btn:hover {
  background: var(--bg-soft) !important;
  border-color: #3b82f6 !important;
  transform: translateY(-1px);
}

/* 14-Day CAD Self-Study Pathway styles */







/* =================================================================*
   Phase P1: Duolingo-style Quiz, Domains & Tutorials Advisory styles
   =================================================================*/
.quiz-body {
  background: var(--bg) !important;
  color: var(--text) !important;
}
.quiz-hud-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  margin-bottom: 24px;
  box-shadow: var(--shadow);
}
.quiz-progress-outer {
  flex: 1;
  max-width: 400px;
  height: 12px;
  background: var(--bg-soft);
  border-radius: 99px;
  margin: 0 20px;
  overflow: hidden;
}
.quiz-progress-inner {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #10b981, #34d399);
  border-radius: 99px;
  transition: width 0.3s ease;
}
.quiz-hud-stat {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 14px;
}


.quiz-hud-hearts {
  display: flex;
  gap: 4px;
}
.quiz-heart {
  color: #ef4444;
  font-size: 18px;
  transition: transform 0.2s ease;
}
.quiz-heart.broken {
  color: var(--line-soft);
  transform: scale(0.8);
}
.quiz-heart-shake {
  animation: heartShake 0.4s ease;
}
@keyframes heartShake {
  0% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  50% { transform: translateX(5px); }
  75% { transform: translateX(-5px); }
  100% { transform: translateX(0); }
}

/* 答题卡与选项 */
.quiz-card-container {
  max-width: 720px;
  margin: 40px auto;
  padding: 32px;
  background: var(--surface-strong);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow-lg);
  min-height: 420px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.quiz-question-text {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 24px;
  color: var(--text);
}
.quiz-options-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}
.quiz-question-figure {
  margin: 0 0 24px;
  padding: 16px;
  background: var(--surface-solid, #fff);
  border: 1px solid var(--line-strong, #cbd5e1);
  border-radius: 14px;
  display: flex;
  justify-content: center;
  align-items: center;
}
.quiz-question-figure svg {
  width: 100%;
  max-width: 420px;
  height: auto;
}
.quiz-option-btn {
  display: flex;
  align-items: center;
  padding: 16px 20px;
  border: 2px solid var(--line);
  border-radius: 16px;
  background: var(--surface);
  color: var(--text);
  font-size: 15px;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  transition: all 0.15s ease;
  width: 100%;
}
.quiz-option-btn:hover:not(.disabled) {
  border-color: #6366f1;
  background: var(--bg-soft);
  transform: translateY(-1px);
}
.quiz-option-btn.selected {
  border-color: #6366f1;
  background: rgba(99, 102, 241, 0.05);
}
.quiz-option-btn.correct {
  border-color: #10b981 !important;
  background: rgba(16, 185, 129, 0.08) !important;
  color: #047857 !important;
}
.quiz-option-btn.incorrect {
  border-color: #ef4444 !important;
  background: rgba(239, 68, 68, 0.08) !important;
  color: #b91c1c !important;
}
.quiz-option-btn.disabled {
  pointer-events: none;
}
.quiz-option-key {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border: 1px solid var(--line);
  border-radius: 6px;
  font-size: 12px;
  font-weight: 700;
  margin-right: 14px;
  background: var(--bg-soft);
  color: var(--muted);
  flex-shrink: 0;
}
.quiz-option-btn.selected .quiz-option-key {
  border-color: #6366f1;
  background: #6366f1;
  color: white;
}

/* 底部即时反馈横栏 */
.quiz-feedback-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 24px 40px;
  background: var(--surface-strong);
  border-top: 2px solid var(--line);
  transform: translateY(100%);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 100;
  box-shadow: 0 -8px 32px rgba(0,0,0,0.06);
}
.quiz-feedback-bar.show {
  transform: translateY(0);
}
.quiz-feedback-bar.correct-bar {
  background: linear-gradient(180deg, rgba(240, 253, 250, 0.98), rgba(255, 255, 255, 0.98));
  border-top-color: #a7f3d0;
}
.quiz-feedback-bar.incorrect-bar {
  background: linear-gradient(180deg, rgba(254, 242, 242, 0.98), rgba(255, 255, 255, 0.98));
  border-top-color: #fecaca;
}
/* 暗色模式下的反馈栏 */


.quiz-feedback-inner {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}
.quiz-feedback-content {
  flex: 1;
}
.quiz-feedback-status {
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.quiz-feedback-status.ok { color: #10b981; }
.quiz-feedback-status.err { color: #ef4444; }

.quiz-explanation-text {
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--muted);
}
.quiz-explanation-text strong {
  color: var(--text);
}

/* 结算卡片 */
.quiz-result-card {
  text-align: center;
  padding: 40px 20px;
}
.quiz-result-badge {
  font-size: 48px;
  margin-bottom: 16px;
  animation: bounce 1s infinite alternate;
}
@keyframes bounce {
  0% { transform: translateY(0); }
  100% { transform: translateY(-10px); }
}

/* 筛选指南 (Advisory Tip Box) */
.advisory-tip-box {
  margin: 16px 0 24px;
  padding: 20px;
  background: var(--surface);
  border: 1px dashed var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow);
}
.advisory-tip-title {
  font-size: 14px;
  font-weight: 700;
  color: #3b82f6;
  margin: 0 0 10px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}
.advisory-tip-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}
.advisory-tip-item {
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--muted);
}
.advisory-tip-item strong {
  color: var(--text);
  display: block;
  margin-bottom: 2px;
}

/* 行业导览新样式 (knowledge-domains.html) */
.domain-grid-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
  margin-top: 32px;
}
.domain-portal-card {
  padding: 30px;
  background: var(--surface-strong);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.domain-portal-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}
.domain-card-header {
  margin-bottom: 16px;
}
.domain-badge-duo {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: rgba(99, 102, 241, 0.1);
  color: #6366f1;
  margin-bottom: 12px;
}
.domain-portal-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin: 0 0 10px;
  color: var(--text);
}
.domain-card-content {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--muted);
  margin-bottom: 20px;
}
.domain-card-links {
  border-top: 1px solid var(--line-soft);
  padding-top: 16px;
  margin-bottom: 20px;
}
.domain-card-links strong {
  display: block;
  font-size: 12px;
  color: var(--text);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.domain-card-links a {
  display: inline-block;
  font-size: 13px;
  color: #4f46e5;
  margin-right: 12px;
  margin-bottom: 6px;
  text-decoration: underline;
}
.domain-card-links a:hover {
  color: #6366f1;
}
.domain-btn-go {
  width: 100%;
  display: block;
  text-align: center;
}

/* 顶部打卡🔥状态 */
.streak-fire-hud {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 800;
  font-size: 13px;
  color: #ea580c;
  padding: 4px 10px;
  border-radius: 99px;
  background: rgba(234, 88, 12, 0.08);
  border: 1px solid rgba(234, 88, 12, 0.16);
  margin-left: 12px;
  vertical-align: middle;
  animation: fireFlicker 1.5s ease infinite alternate;
}
@keyframes fireFlicker {
  0% { transform: scale(1); box-shadow: 0 0 2px rgba(234,88,12,0.1); }
  100% { transform: scale(1.03); box-shadow: 0 0 8px rgba(234,88,12,0.2); }
}

/* --- Phase 2: Duo Backup Manager Styles --- */
.backup-manager-card {
  background: var(--surface-strong);
  border: 2px dashed var(--line-strong);
  border-radius: 20px;
  padding: 30px;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
  margin-top: 20px;
}
.backup-manager-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
}
.backup-header {
  margin-bottom: 24px;
}
.backup-header h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.backup-stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
  background: var(--bg-main);
  border-radius: 12px;
  padding: 16px;
}
.backup-stat-item {
  text-align: center;
}
.stat-label {
  display: block;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.stat-value {
  font-size: 20px;
  font-weight: 800;
  color: var(--text-main);
}
.backup-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.backup-code-group, .backup-import-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.backup-code-group label, .backup-import-group label {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-muted);
}
.backup-input-wrapper {
  display: flex;
  gap: 8px;
}
.backup-input-wrapper input {
  flex: 1;
  font-family: monospace;
  font-size: 12px;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  padding: 10px 12px;
  background: var(--surface-solid);
  color: var(--text-main);
}
.backup-input-wrapper input[readonly] {
  background: var(--bg-main);
  cursor: pointer;
}
.backup-message {
  margin-top: 16px;
  padding: 12px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 500;
  text-align: center;
  animation: fadeIn 0.2s ease;
}
.backup-message.success {
  background: rgba(16, 185, 129, 0.1);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.2);
}
.backup-message.error {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.2);
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 响应式调整 */
@media (max-width: 768px) {
  .backup-actions {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .backup-stats-row {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}

/* 暗色模式支持 */


/* 修复 quiz.html 页面浅色背景下文字看不清的问题 */
.quiz-body .hero-title {
  color: var(--text-main) !important;
  text-shadow: none !important;
}



/* --- Phase 3: Placement Banner Styles --- */
.placement-banner-card {
  max-width: 1100px;
  margin: 0 auto 32px auto;
  padding: 24px;
  border: 2px solid #eab308;
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(254, 243, 199, 0.5) 0%, var(--surface-solid) 100%);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.placement-banner-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.placement-banner-content {
  flex: 1;
}
.placement-badge {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 800;
  background: rgba(234, 179, 8, 0.1);
  color: #ca8a04;
  text-transform: uppercase;
  margin-bottom: 8px;
  letter-spacing: 0.05em;
}
.placement-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  margin: 0 0 6px 0;
}
.placement-desc {
  margin: 0 !important;
}
.btn-placement-go {
  background: linear-gradient(135deg, #ca8a04, #eab308) !important;
  color: #fff !important;
  border-color: transparent !important;
  box-shadow: 0 10px 20px rgba(234, 179, 8, 0.2) !important;
  min-width: 150px;
  white-space: nowrap;
}
.btn-placement-go:hover {
  background: linear-gradient(135deg, #b47b03, #d9a306) !important;
  box-shadow: 0 12px 24px rgba(234, 179, 8, 0.35) !important;
}

@media (max-width: 768px) {
  .placement-banner-card {
    flex-direction: column;
    align-items: stretch;
    gap: 16px;
    text-align: center;
  }
  .btn-placement-go {
    width: 100%;
  }
}



/* --- Phase 4: Units & Lessons lock-progression Styles --- */
.lesson-portal-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px;
  background: var(--surface-strong);
  border: 1px solid var(--line-strong);
  border-radius: 18px;
  box-shadow: var(--shadow-sm);
  gap: 20px;
  transition: transform 0.22s ease, box-shadow 0.24s ease, border-color 0.2s ease;
}
.lesson-portal-card:not(.locked):hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
}
.lesson-portal-card.locked {
  opacity: 0.65;
  background: rgba(226, 232, 240, 0.3);
  border-style: dashed;
  pointer-events: none;
  cursor: not-allowed;
}
.lesson-card-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex: 1;
}
.lesson-card-badge {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--bg-app-shell);
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 14px;
  flex-shrink: 0;
}
.lesson-portal-card.completed .lesson-card-badge {
  background: rgba(16, 185, 129, 0.1);
  color: #10b981;
}
.lesson-portal-card.active-lesson .lesson-card-badge {
  background: var(--accent-glow);
  color: var(--accent);
}
.lesson-card-info h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  margin: 0 0 4px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}
.lesson-portal-card.locked .lesson-card-info h4 {
  color: var(--text-muted);
}
.lesson-status-tag {
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
  padding: 2px 6px;
  border-radius: 4px;
}
.lesson-status-tag.completed {
  background: rgba(16, 185, 129, 0.1);
  color: #10b981;
}
.lesson-status-tag.active {
  background: var(--accent-glow);
  color: var(--accent);
}
.lesson-status-tag.locked {
  background: rgba(148, 163, 184, 0.1);
  color: var(--text-muted);
}

@media (max-width: 600px) {
  .lesson-portal-card {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
    gap: 16px;
  }
  .lesson-card-meta {
    flex-direction: column;
    gap: 12px;
  }
}

/* 暗色模式下微调 */


/* --- Navigation Dropdown menu --- */






/* --- Wiki Subnav Dropdown --- */








/* --- Roadmap Drawer Panel Upgrade --- */
.skill-inspector-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.skill-inspector-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.skill-inspector {
  position: fixed;
  top: 0;
  right: 0;
  width: 100%;
  max-width: 480px;
  height: 100vh;
  background: var(--surface-strong);
  border-left: 1.5px solid var(--line-strong);
  border-top-left-radius: 16px;
  border-bottom-left-radius: 16px;
  padding: 40px 32px 32px 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  box-shadow: -10px 0 40px rgba(0, 0, 0, 0.2);
  z-index: 1000;
  transform: translateX(100%);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  overflow-y: auto;
}
.skill-inspector.open {
  transform: translateX(0);
}

.skill-inspector-close-btn {
  position: absolute;
  top: 20px;
  right: 24px;
  background: var(--bg-soft);
  border: 1px solid var(--line-strong);
  color: var(--text-muted);
  font-size: 24px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  line-height: 1;
}
.skill-inspector-close-btn:hover {
  background: var(--line-strong);
  color: var(--text-main);
  transform: scale(1.05);
}

.skill-inspector-pitfall {
  font-size: 13.5px;
  background: rgba(239, 68, 68, 0.08);
  padding: 14px 16px;
  border-radius: var(--radius-md);
  border-left: 3px solid #ef4444;
  color: var(--text-main);
  line-height: 1.55;
  margin-top: 4px;
}

/* Dark mode enhancements */


/* --- Floating XP Animation --- */
@keyframes floatUpFade {
  0% { transform: translateY(0) scale(0.8); opacity: 0; }
  20% { transform: translateY(-10px) scale(1.1); opacity: 1; }
  80% { transform: translateY(-25px) scale(1); opacity: 1; }
  100% { transform: translateY(-35px) scale(0.9); opacity: 0; }
}

/* --- Quiz Dashboard & Stats Panel --- */
.quiz-dashboard-panel {
  background: var(--surface-strong);
  border: 1.5px solid var(--line-strong);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 28px;
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.quiz-dashboard-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-main);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.quiz-dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 16px;
}

.quiz-stat-card {
  background: var(--bg-app-shell);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  align-items: center;
  gap: 16px;
  position: relative;
  transition: all 0.2s ease;
}

.quiz-stat-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}

.quiz-stat-ring-container {
  position: relative;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.quiz-stat-ring-svg {
  transform: rotate(-90deg);
  width: 60px;
  height: 60px;
}

.quiz-stat-ring-bg {
  fill: none;
  stroke: var(--line-strong);
  stroke-width: 4.5;
}

.quiz-stat-ring-active {
  fill: none;
  stroke: var(--accent);
  stroke-dasharray: 157; /* 2 * PI * r (r = 25) */
  stroke-dashoffset: 157;
  stroke-linecap: round;
  stroke-width: 5;
  transition: stroke-dashoffset 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.quiz-stat-ring-text {
  position: absolute;
  font-size: 11px;
  font-weight: 800;
  color: var(--text-main);
}

.quiz-stat-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.quiz-stat-title {
  font-size: 13.5px;
  font-weight: 800;
  color: var(--text-main);
}

.quiz-stat-desc {
  font-size: 12px;
  color: var(--text-muted);
}

/* Specific ring colors for wow factor */
.quiz-stat-card[data-track-card="bim"] .quiz-stat-ring-active {
  stroke: #10b981; /* Emerald */
}
.quiz-stat-card[data-track-card="mcad"] .quiz-stat-ring-active {
  stroke: #3b82f6; /* Blue */
}
.quiz-stat-card[data-track-card="civil"] .quiz-stat-ring-active {
  stroke: #8b5cf6; /* Purple */
}
.quiz-stat-card[data-track-card="draft"] .quiz-stat-ring-active {
  stroke: #f59e0b; /* Amber */
}

/* Dark mode adjustment */


/* FORCE LIGHT THEME EVERYWHERE */
:root {
  --ink-bg: #F6F4EC !important;
  --ink-bg-soft: #EFEBDE !important;
  --ink-surface: #FFFFFF !important;
  --ink-surface-2: #FBFAF4 !important;
  --ink-text: #0E1422 !important;
  --ink-text-soft: #2A3245 !important;
  --ink-text-muted: #5B6478 !important;
  --ink-line: rgba(14, 20, 34, 0.10) !important;
  --ink-line-strong: rgba(14, 20, 34, 0.18) !important;
  --ink-rule: rgba(14, 20, 34, 0.08) !important;
  --ink-primary: #3B47D9 !important;
  --ink-primary-hover: #2D38C4 !important;
  --ink-primary-soft: rgba(59, 71, 217, 0.08) !important;
  --ink-primary-strong: #1F2A9E !important;
  --ink-accent: #B68A4E !important;
  --ink-accent-strong: #946832 !important;
  --ink-accent-soft: rgba(182, 138, 78, 0.10) !important;
  
  --bg: #f8fafc !important;
  --bg-soft: #f1f5f9 !important;
  --surface: rgba(255, 255, 255, 0.9) !important;
  --surface-strong: #ffffff !important;
  --line: #cbd5e1 !important;
  --line-soft: #e2e8f0 !important;
  --text: #0f172a !important;
  --muted: #475569 !important;
}
body {
  background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%) !important;
  color: #0f172a !important;
}
body[data-page="knowledge"] {
  background: linear-gradient(180deg, #e8eaf0 0%, #ebe7e1 14%, #f0ebe4 38%, #f3efe8 100%) !important;
}
.card, .card-glass, .kb-quick, .kb-feature, .panel, .kb-main, .tutorial-item, .news-curated-item, .kb-detail-card, .kb-people, .kb-person {
  background: #FFFFFF !important;
  color: #0E1422 !important;
}

/* KB portal shell: stack sidebar above content on small screens
   (the portal redesign switched .kb-app from grid to flex but never
   added a mobile stacking rule, so phones got a side-by-side layout
   with horizontal overflow) */
@media (max-width: 780px) {
  .kb-app {
    flex-direction: column;
  }
  .kb-app > .kb-sidebar.kb-sidebar--portal {
    width: 100%;
    max-width: 100%;
  }
}

/* Generic grids: guarantee single-column stacking on phones.
   The portal redesign + base-rule ordering left these mobile overrides
   losing the cascade; anchor them with !important and content-safe tracks. */
@media (max-width: 780px) {
  .search-row, .grid-3, .grid-2, .kpis, .hero-split, .kb-grid, .grid-4, .grid-5 {
    grid-template-columns: minmax(0, 1fr) !important;
  }
  .grid > * {
    min-width: 0;
  }
}