game/game.html at main · yjkyz/game · GitHub

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<!DOCTYPE html>
<html lang="zh-CN">
<head>
  <meta charset="UTF-8" />
  <title>反应力小测试小游戏</title>
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <style>
    :root {
      --bg: #050816;
      --bg-elevated: rgba(15, 23, 42, 0.9);
      --accent: #22c55e;
      --accent-soft: rgba(34, 197, 94, 0.15);
      --accent-2: #38bdf8;
      --danger: #f97373;
      --text: #e5e7eb;
      --muted: #9ca3af;
      --border-subtle: rgba(148, 163, 184, 0.25);
      --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.75);
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      min-height: 100vh;
      display: flex;
      align-items: center;
      justify-content: center;
      background:
        radial-gradient(circle at top left, #1f2937 0, transparent 55%),
        radial-gradient(circle at bottom right, #111827 0, transparent 55%),
        var(--bg);
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
      color: var(--text);
    }

    .shell {
      width: min(480px, 100% - 32px);
      background: radial-gradient(circle at top, rgba(148, 163, 184, 0.08), transparent 60%) padding-box,
                  linear-gradient(135deg, rgba(56, 189, 248, 0.5), rgba(52, 211, 153, 0.4)) border-box;
      border-radius: 24px;
      border: 1px solid transparent;
      padding: 1px;
      box-shadow: var(--shadow-soft);
    }

    .card {
      background: radial-gradient(circle at top, rgba(15, 23, 42, 0.95), rgba(15, 23, 42, 0.98));
      border-radius: 23px;
      padding: 20px 20px 18px;
      border: 1px solid rgba(15, 23, 42, 0.9);
      backdrop-filter: blur(18px) saturate(140%);
      position: relative;
      overflow: hidden;
    }

    .card::before {
      content: "";
      position: absolute;
      inset: -40%;
      background:
        radial-gradient(circle at 10% 0%, rgba(56, 189, 248, 0.12), transparent 55%),
        radial-gradient(circle at 90% 0%, rgba(52, 211, 153, 0.12), transparent 55%);
      opacity: 0.9;
      pointer-events: none;
    }

    .card-inner {
      position: relative;
      z-index: 1;
    }

    .header-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      margin-bottom: 16px;
    }

    .title {
      display: flex;
      flex-direction: column;
      gap: 4px;
    }

    .title-main {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .logo-dot {
      width: 24px;
      height: 24px;
      border-radius: 999px;
      background: radial-gradient(circle at 30% 20%, #e5e7eb, #22c55e);
      box-shadow:
        0 0 0 1px rgba(34, 197, 94, 0.4),
        0 0 25px rgba(34, 197, 94, 0.7);
      position: relative;
      overflow: hidden;
    }

    .logo-dot::after {
      content: "";
      position: absolute;
      inset: -80%;
      background:
        radial-gradient(circle at 10% 0%, rgba(56, 189, 248, 0.18), transparent 60%),
        radial-gradient(circle at 90% 90%, rgba(34, 197, 94, 0.2), transparent 60%);
      mix-blend-mode: screen;
      opacity: 0.9;
    }

    h1 {
      font-size: 1.1rem;
      font-weight: 600;
      letter-spacing: 0.01em;
      color: #e5e7eb;
    }

    .subtitle {
      font-size: 0.8rem;
      color: var(--muted);
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .pill {
      padding: 2px 8px;
      border-radius: 999px;
      border: 1px solid rgba(148, 163, 184, 0.45);
      background: radial-gradient(circle at top, rgba(148, 163, 184, 0.3), rgba(15, 23, 42, 0.9));
      font-size: 0.7rem;
      color: var(--muted);
    }

    .stats {
      display: flex;
      gap: 10px;
      align-items: center;
    }

    .stat-pill {
      min-width: 82px;
      border-radius: 999px;
      padding: 6px 10px;
      background: radial-gradient(circle at top, rgba(15, 23, 42, 0.95), rgba(15, 23, 42, 0.98));
      border: 1px solid var(--border-subtle);
      display: flex;
      flex-direction: column;
      gap: 2px;
    }

    .stat-label {
      font-size: 0.68rem;
      color: var(--muted);
    }

    .stat-value {
      font-size: 0.95rem;
      font-weight: 600;
      display: flex;
      align-items: baseline;
      gap: 4px;
    }

    .stat-unit {
      font-size: 0.7rem;
      color: var(--muted);
    }

    .mode-toggle {
      display: inline-flex;
      align-items: center;
      border-radius: 999px;
      background: radial-gradient(circle at top, rgba(15, 23, 42, 0.9), rgba(15, 23, 42, 0.98));
      padding: 2px;
      border: 1px solid rgba(148, 163, 184, 0.5);
      box-shadow: 0 0 0 1px rgba(15, 23, 42, 0.8);
    }

    .mode-toggle button {
      border: none;
      background: transparent;
      color: var(--muted);
      font-size: 0.7rem;
      padding: 4px 10px;
      border-radius: 999px;
      cursor: pointer;
      transition: all 0.15s ease-out;
      display: flex;
      align-items: center;
      gap: 4px;
      white-space: nowrap;
    }

    .mode-toggle button.active {
      background: radial-gradient(circle at top, rgba(34, 197, 94, 0.18), rgba(15, 23, 42, 0.96));
      color: #dcfce7;
      box-shadow:
        0 0 18px rgba(34, 197, 94, 0.5),
        inset 0 0 0 1px rgba(34, 197, 94, 0.6);
    }

    .mode-dot {
      width: 6px;
      height: 6px;
      border-radius: 999px;
      background: #22c55e;
      box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.25);
    }

    .description {
      font-size: 0.8rem;
      color: var(--muted);
      margin-bottom: 10px;
      line-height: 1.5;
    }

    .tips {
      font-size: 0.75rem;
      color: rgba(148, 163, 184, 0.9);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .tips span.key {
      min-width: 18px;
      height: 18px;
      border-radius: 6px;
      border: 1px solid rgba(148, 163, 184, 0.6);
      font-size: 0.65rem;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--muted);
      background: radial-gradient(circle at top, rgba(15, 23, 42, 0.98), rgba(15, 23, 42, 1));
      box-shadow: 0 3px 0 rgba(15, 23, 42, 0.9);
    }

    .game-shell {
      position: relative;
      border-radius: 20px;
      padding: 1px;
      background: radial-gradient(circle at 10% 0%, rgba(56, 189, 248, 0.7), transparent 50%),
                  radial-gradient(circle at 90% 100%, rgba(34, 197, 94, 0.7), transparent 50%);
      margin-bottom: 10px;
    }

    .game-shell-inner {
      border-radius: 19px;
      background: radial-gradient(circle at top, rgba(15, 23, 42, 0.97), rgba(15, 23, 42, 0.98));
      padding: 12px;
      border: 1px solid rgba(30, 64, 175, 0.6);
      box-shadow: inset 0 0 0 1px rgba(15, 23, 42, 0.9);
    }

    .game-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 8px;
      font-size: 0.75rem;
      color: var(--muted);
    }

    .badge {
      padding: 2px 8px;
      border-radius: 999px;
      border: 1px solid rgba(37, 99, 235, 0.6);
      background: radial-gradient(circle at top, rgba(37, 99, 235, 0.45), rgba(15, 23, 42, 0.98));
      color: #dbeafe;
      font-size: 0.7rem;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    .badge-dot {
      width: 6px;
      height: 6px;
      border-radius: 999px;
      background: #38bdf8;
      box-shadow: 0 0 10px rgba(56, 189, 248, 0.8);
    }

    .game-meta {
      display: flex;
      gap: 10px;
      align-items: center;
    }

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

    .dot {
      width: 4px;
      height: 4px;
      border-radius: 999px;
      background: rgba(148, 163, 184, 0.85);
    }

    .game-area {
      position: relative;
      width: 100%;
      aspect-ratio: 4 / 3;
      min-height: 210px;
      border-radius: 14px;
      border: 1px solid rgba(30, 64, 175, 0.8);
      background:
        radial-gradient(circle at 10% 10%, rgba(56, 189, 248, 0.22), transparent 60%),
        radial-gradient(circle at 90% 90%, rgba(34, 197, 94, 0.22), transparent 60%),
        radial-gradient(circle at center, rgba(15, 23, 42, 0.98), rgba(2, 6, 23, 0.98));
      overflow: hidden;
      box-shadow:
        inset 0 0 40px rgba(0, 0, 0, 0.85),
        0 14px 30px rgba(15, 23, 42, 0.9);
    }

    .grid-overlay {
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(rgba(15, 23, 42, 0.85) 1px, transparent 1px),
        linear-gradient(90deg, rgba(15, 23, 42, 0.85) 1px, transparent 1px);
      background-size: 22px 22px;
      opacity: 0.7;
      pointer-events: none;
      mix-blend-mode: soft-light;
    }

    .glow-orbit {
      position: absolute;
      width: 160%;
      height: 160%;
      left: -30%;
      top: -30%;
      border-radius: 999px;
      border: 1px dashed rgba(56, 189, 248, 0.18);
      transform: rotate(-18deg);
      pointer-events: none;
    }

    .target {
      position: absolute;
      width: 54px;
      height: 54px;
      border-radius: 999px;
      background: radial-gradient(circle at 25% 20%, #f9fafb, #22c55e 45%, #16a34a 70%, #052e16 100%);
      box-shadow:
        0 0 0 3px rgba(22, 163, 74, 0.6),
        0 0 40px rgba(34, 197, 94, 0.9);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #052e16;
      font-weight: 700;
      font-size: 0.8rem;
      user-select: none;
      transform: translate(-50%, -50%);
      transition: transform 0.16s ease-out;
    }

    .target::after {
      content: "";
      position: absolute;
      inset: -18%;
      border-radius: inherit;
      border: 1px solid rgba(187, 247, 208, 0.6);
      box-shadow: 0 0 25px rgba(22, 163, 74, 0.6);
      opacity: 0.8;
      pointer-events: none;
    }

    .target.pulse {
      animation: pulse 0.4s ease-out;
    }

    @keyframes pulse {
      0% { transform: translate(-50%, -50%) scale(1); }
      50% { transform: translate(-50%, -50%) scale(0.88); }
      100% { transform: translate(-50%, -50%) scale(1); }
    }

    .wave {
      position: absolute;
      inset: 12%;
      border-radius: inherit;
      border: 1px solid rgba(56, 189, 248, 0.25);
      opacity: 0;
      pointer-events: none;
    }

    .wave.wave-animate {
      animation: ripple 0.8s ease-out;
    }

    @keyframes ripple {
      0% {
        opacity: 0.5;
        transform: scale(1);
      }
      100% {
        opacity: 0;
        transform: scale(1.08);
      }
    }

    .center-hint {
      position: absolute;
      inset: 0;
      display: flex;
      align-items: center;
      justify-content: center;
      color: rgba(148, 163, 184, 0.9);
      font-size: 0.85rem;
      pointer-events: none;
      text-align: center;
      padding: 0 16px;
    }

    .center-hint span {
      background: radial-gradient(circle at top, rgba(15, 23, 42, 1), rgba(15, 23, 42, 0.98));
      padding: 6px 10px;
      border-radius: 999px;
      border: 1px solid rgba(148, 163, 184, 0.55);
      box-shadow: 0 10px 25px rgba(15, 23, 42, 0.9);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .center-dot {
      width: 6px;
      height: 6px;
      border-radius: 999px;
      background: #22c55e;
      box-shadow: 0 0 14px rgba(34, 197, 94, 0.7);
    }

    .game-footer {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      margin-top: 6px;
    }

    .scoreline {
      display: flex;
      flex-direction: column;
      gap: 2px;
      font-size: 0.74rem;
    }

    .score-main {
      display: flex;
      align-items: baseline;
      gap: 8px;
    }

    .score-main strong {
      font-size: 1.15rem;
      color: #bbf7d0;
    }

    .score-sub {
      font-size: 0.7rem;
      color: rgba(148, 163, 184, 0.9);
    }

    .btn-primary {
      position: relative;
      border: none;
      border-radius: 999px;
      padding: 8px 18px;
      background: radial-gradient(circle at top, #22c55e, #16a34a);
      color: #022c22;
      font-size: 0.82rem;
      font-weight: 600;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      box-shadow:
        0 0 0 1px rgba(22, 163, 74, 1),
        0 14px 24px rgba(21, 128, 61, 0.8);
      transition: transform 0.1s ease-out, box-shadow 0.1s ease-out, filter 0.1s ease-out;
      white-space: nowrap;
    }

    .btn-primary span.dot {
      width: 6px;
      height: 6px;
      border-radius: 999px;
      background: #dcfce7;
      box-shadow: 0 0 12px rgba(187, 247, 208, 0.8);
    }

    .btn-primary:active {
      transform: translateY(1px);
      box-shadow:
        0 0 0 1px rgba(22, 163, 74, 1),
        0 8px 18px rgba(21, 128, 61, 0.9);
      filter: brightness(0.98);
    }

    .btn-primary:disabled {
      opacity: 0.65;
      cursor: default;
      box-shadow:
        0 0 0 1px rgba(22, 163, 74, 0.7),
        0 8px 18px rgba(21, 128, 61, 0.6);
    }

    .history {
      margin-top: 8px;
      font-size: 0.75rem;
      color: rgba(148, 163, 184, 0.92);
      padding-top: 8px;
      border-top: 1px dashed rgba(55, 65, 81, 0.8);
      display: flex;
      justify-content: space-between;
      gap: 12px;
      align-items: center;
    }

    .history span.label {
      color: rgba(148, 163, 184, 0.98);
    }

    .history span.value {
      color: #e5e7eb;
      font-weight: 500;
    }

    .history-sub {
      font-size: 0.7rem;
      color: rgba(148, 163, 184, 0.8);
    }

    .badge-compact {
      padding: 2px 8px;
      border-radius: 999px;
      border: 1px solid rgba(148, 163, 184, 0.7);
      background: radial-gradient(circle at top, rgba(148, 163, 184, 0.4), rgba(15, 23, 42, 0.98));
      font-size: 0.68rem;
      color: rgba(229, 231, 235, 0.95);
      display: inline-flex;
      align-items: center;
      gap: 4px;
      white-space: nowrap;
    }

    .badge-compact .dot {
      background: #22c55e;
      box-shadow: 0 0 10px rgba(34, 197, 94, 0.8);
    }

    @media (max-width: 420px) {
      .card {
        padding: 16px 14px 14px;
      }

      .header-row {
        flex-direction: column;
        align-items: flex-start;
      }

      .stats {
        align-self: stretch;
        justify-content: space-between;
        width: 100%;
      }

      .game-footer {
        flex-direction: column-reverse;
        align-items: stretch;
      }

      .btn-primary {
        justify-content: center;
        width: 100%;
      }
    }
  </style>
</head>
<body>
  <main class="shell">
    <section class="card">
      <div class="card-inner">
        <div class="header-row">
          <div class="title">
            <div class="title-main">
              <div class="logo-dot"></div>
              <h1>反应力小测试</h1>
            </div>
            <div class="subtitle">
              <span>在限定时间内尽可能多地点击发光圆点。</span>
              <span class="pill">30 秒一局 · 纯前端小游戏</span>
            </div>
          </div>

          <div class="stats">
            <div class="stat-pill">
              <span class="stat-label">剩余时间</span>
              <div class="stat-value">
                <span id="timeValue">30.0</span>
                <span class="stat-unit">s</span>
              </div>
            </div>
            <div class="stat-pill">
              <span class="stat-label">命中次数</span>
              <div class="stat-value">
                <span id="scoreValue">0</span>
                <span class="stat-unit">clicks</span>
              </div>
            </div>
          </div>
        </div>

        <div class="mode-toggle" aria-label="选择模式">
          <button type="button" class="active" data-mode="normal">
            <span class="mode-dot"></span>
            标准模式
          </button>
          <button type="button" data-mode="hard">
            高速模式
          </button>
        </div>

        <p class="description">
          点击绿色发光圆点，每命中一次立刻刷新到随机位置。标准模式适合热身，高速模式更考验手眼协调与反应速度。
        </p>

        <p class="tips">
          <span class="key">R</span> 再来一局，
          <span class="key">H</span> 切换难度。
        </p>

        <div class="game-shell">
          <div class="game-shell-inner">
            <header class="game-header">
              <div class="badge">
                <span class="badge-dot"></span>
                Click Reflex Arena
              </div>
              <div class="game-meta">
                <div class="meta-item">
                  <span class="dot"></span>
                  <span id="modeLabel">标准</span>
                </div>
                <div class="meta-item">
                  <span class="dot"></span>
                  <span id="speedLabel">刷新间隔 600ms</span>
                </div>
              </div>
            </header>

            <div class="game-area" id="gameArea">
              <div class="grid-overlay"></div>
              <div class="glow-orbit"></div>
              <div class="wave" id="wave"></div>

              <button
                type="button"
                class="target"
                id="target"
                aria-label="点击目标"
                style="left: 50%; top: 55%;"
              >
                GO
              </button>

              <div class="center-hint" id="centerHint">
                <span>
                  <span class="center-dot"></span>
                  点击绿色圆点开始游戏
                </span>
              </div>
            </div>

            <footer class="game-footer">
              <div class="scoreline">
                <div class="score-main">
                  <strong id="scoreSummary">0</strong>
                  <span class="score-sub" id="scoreDetail">命中 0 次 · 平均 0.0 次/秒</span>
                </div>
                <div class="score-sub" id="statusText">准备就绪，点击圆点开始第一局。</div>
              </div>

              <button class="btn-primary" id="startBtn" type="button">
                <span class="dot"></span>
                <span id="startBtnLabel">开始游戏</span>
              </button>
            </footer>
          </div>
        </div>

        <div class="history">
          <div>
            <span class="label">最佳成绩：</span>
            <span class="value" id="bestScore">--</span>
          </div>
          <div class="history-sub">
            <span class="badge-compact">
              <span class="dot"></span>
              纯前端 · 离线可玩 · 无任何数据上传
            </span>
          </div>
        </div>
      </div>
    </section>
  </main>

  <script>
    (function () {
      const DURATION = 30_000; // ms

      const MODES = {
        normal: {
          label: "标准",
          speedLabel: "刷新间隔 600ms",
          minDelay: 450,
          maxDelay: 650,
        },
        hard: {
          label: "高速",
          speedLabel: "刷新间隔 350ms",
          minDelay: 260,
          maxDelay: 380,
        },
      };

      const gameArea = document.getElementById("gameArea");
      const target = document.getElementById("target");
      const wave = document.getElementById("wave");
      const centerHint = document.getElementById("centerHint");

      const timeValueEl = document.getElementById("timeValue");
      const scoreValueEl = document.getElementById("scoreValue");
      const scoreSummaryEl = document.getElementById("scoreSummary");
      const scoreDetailEl = document.getElementById("scoreDetail");
      const statusTextEl = document.getElementById("statusText");
      const bestScoreEl = document.getElementById("bestScore");

      const startBtn = document.getElementById("startBtn");
      const startBtnLabel = document.getElementById("startBtnLabel");

      const modeButtons = Array.from(
        document.querySelectorAll(".mode-toggle button")
      );
      const modeLabelEl = document.getElementById("modeLabel");
      const speedLabelEl = document.getElementById("speedLabel");

      let mode = "normal";
      let playing = false;
      let clicks = 0;
      let startTime = 0;
      let timerId = null;
      let moveTimeoutId = null;
      let best = null;

      function updateModeUI() {
        const cfg = MODES[mode];
        modeLabelEl.textContent = cfg.label;
        speedLabelEl.textContent = cfg.speedLabel;

        modeButtons.forEach((btn) => {
          const isActive = btn.dataset.mode === mode;
          btn.classList.toggle("active", isActive);
        });

        statusTextEl.textContent = playing
          ? "游戏进行中，加油！"
          : `当前为${cfg.label}模式，点击圆点开始。`;
      }

      function loadBest() {
        try {
          const key = "reaction-game-best";
          const raw = localStorage.getItem(key);
          if (!raw) return null;
          const parsed = JSON.parse(raw);
          if (
            parsed &&
            typeof parsed.score === "number" &&
            typeof parsed.mode === "string"
          ) {
            best = parsed;
          }
        } catch {
          best = null;
        }
      }

      function saveBest() {
        if (!best) return;
        try {
          const key = "reaction-game-best";
          localStorage.setItem(key, JSON.stringify(best));
        } catch {
          // ignore
        }
      }

      function renderBest() {
        if (!best) {
          bestScoreEl.textContent = "--";
          return;
        }
        const cfg = MODES[best.mode] || MODES.normal;
        const avg = best.score / (DURATION / 1000);
        bestScoreEl.textContent = `${best.score} 次 (${cfg.label} · ${avg.toFixed(
          1
        )} 次/秒)`;
      }

      function resetGameState() {
        playing = false;
        clicks = 0;
        startTime = 0;
        clearInterval(timerId);
        clearTimeout(moveTimeoutId);
        timerId = null;
        moveTimeoutId = null;

        timeValueEl.textContent = (DURATION / 1000).toFixed(1);
        scoreValueEl.textContent = "0";
        scoreSummaryEl.textContent = "0";
        scoreDetailEl.textContent = "命中 0 次 · 平均 0.0 次/秒";
        statusTextEl.textContent = "准备就绪，点击圆点或右侧按钮开始。";

        centerHint.style.opacity = "1";
        centerHint.style.transform = "translateY(0)";

        startBtn.disabled = false;
        startBtnLabel.textContent = "开始游戏";

        target.textContent = "GO";
        target.style.left = "50%";
        target.style.top = "55%";
      }

      function randomPosition() {
        const rect = gameArea.getBoundingClientRect();
        const padding = 32;
        const xPx =
          padding + Math.random() * Math.max(10, rect.width - padding * 2);
        const yPx =
          padding + Math.random() * Math.max(10, rect.height - padding * 2);

        const x = (xPx / rect.width) * 100;
        const y = (yPx / rect.height) * 100;

        return { x, y };
      }

      function scheduleMove() {
        const cfg = MODES[mode];
        const delay =
          cfg.minDelay +
          Math.random() * Math.max(50, cfg.maxDelay - cfg.minDelay);

        clearTimeout(moveTimeoutId);
        moveTimeoutId = setTimeout(() => {
          if (!playing) return;
          const { x, y } = randomPosition();
          target.style.left = x + "%";
          target.style.top = y + "%";

          wave.classList.remove("wave-animate");
          void wave.offsetWidth;
          wave.classList.add("wave-animate");

          scheduleMove();
        }, delay);
      }

      function startGame() {
        if (playing) return;
        playing = true;
        clicks = 0;
        startTime = performance.now();
        clearInterval(timerId);

        centerHint.style.opacity = "0";
        centerHint.style.transform = "translateY(6px)";

        startBtn.disabled = true;
        startBtnLabel.textContent = "游戏进行中…";

        target.textContent = "GO";

        const { x, y } = randomPosition();
        target.style.left = x + "%";
        target.style.top = y + "%";

        statusTextEl.textContent = "开始计时！尽可能快地点击每一次出现的圆点。";

        timerId = setInterval(() => {
          if (!playing) return;
          const elapsed = performance.now() - startTime;
          const remain = Math.max(0, DURATION - elapsed);
          timeValueEl.textContent = (remain / 1000).toFixed(1);

          if (remain <= 0) {
            finishGame();
          }
        }, 50);

        scheduleMove();
      }

      function finishGame() {
        if (!playing) return;
        playing = false;
        clearInterval(timerId);
        clearTimeout(moveTimeoutId);
        timerId = null;
        moveTimeoutId = null;

        const totalSeconds = DURATION / 1000;
        const avg = clicks / totalSeconds;

        timeValueEl.textContent = "0.0";
        scoreSummaryEl.textContent = String(clicks);
        scoreDetailEl.textContent = `命中 ${clicks} 次 · 平均 ${avg.toFixed(
          1
        )} 次/秒`;

        target.textContent = "再来";

        statusTextEl.textContent =
          clicks === 0
            ? "这一局还没热身开局，再试一次吧。"
            : avg >= 2.5
            ? "反应很快！试试再挑战一下自己的极限？"
            : avg >= 1.6
            ? "不错的节奏，稍微提一点速度就能更棒。"
            : "可以先从标准模式熟悉节奏，再逐渐提速。";

        startBtn.disabled = false;
        startBtnLabel.textContent = "再来一局";

        const prevBestScore = best ? best.score : -1;
        if (clicks > prevBestScore) {
          best = { score: clicks, mode };
          saveBest();
          renderBest();

          if (clicks > 0) {
            statusTextEl.textContent += " 🎉 刷新了个人最佳！";
          }
        }
      }

      function handleHit() {
        if (!playing) {
          startGame();
          return;
        }

        clicks += 1;
        scoreValueEl.textContent = String(clicks);
        scoreSummaryEl.textContent = String(clicks);

        target.classList.remove("pulse");
        void target.offsetWidth;
        target.classList.add("pulse");

        const rect = gameArea.getBoundingClientRect();
        const radius = 100;
        const centerX = rect.width / 2;
        const centerY = rect.height / 2;

        const currentX =
          (parseFloat(target.style.left.replace("%", "")) / 100) * rect.width;
        const currentY =
          (parseFloat(target.style.top.replace("%", "")) / 100) * rect.height;

        const dx = currentX - centerX;
        const dy = currentY - centerY;
        const dist = Math.sqrt(dx * dx + dy * dy) || 1;
        const nx = dx / dist;
        const ny = dy / dist;

        const jitterRadius = 28;