haiany
/
huashu-design
mirror of https://github.com/alchaincyf/huashu-design.git


			
				
					
						
						
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<html lang="zh-Hans">
<head>
<meta charset="utf-8" />
<title>huashu-design V2 · c1-ios-prototype · 中文版</title>
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link href="https://fonts.googleapis.com/css2?family=Source+Serif+4:ital,opsz,wght@0,8..60,300..700;1,8..60,300..700&family=Noto+Serif+SC:wght@300;400;500;600&family=Inter:wght@100;200;300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap" rel="stylesheet">
<style>
  :root {
    --bg: #000000;
    --ink: #FFFFFF;
    --ink-80: rgba(255,255,255,0.82);
    --ink-60: rgba(255,255,255,0.58);
    --muted: rgba(255,255,255,0.40);
    --dim: rgba(255,255,255,0.18);
    --hairline: rgba(255,255,255,0.12);
    --accent: #D97757;
    --accent-deep: #B85D3D;
    --cd-bg: #F5F4F0;
    --cd-ink: #1A1918;
    --cd-dim: #8B867E;
    --cd-green: #2D4A3A;

    --serif-en: "Source Serif 4", Georgia, serif;
    --serif-cn: "Noto Serif SC", "Songti SC", serif;
    --sans: "Inter", -apple-system, "PingFang SC", sans-serif;
    --mono: "JetBrains Mono", "SF Mono", ui-monospace, monospace;
  }
  html, body {
    margin: 0; padding: 0;
    background: #000;
    overflow: hidden;
    font-family: var(--sans);
    color: var(--ink);
    -webkit-font-smoothing: antialiased;
  }
  * { box-sizing: border-box; }

  .stage {
    position: fixed;
    top: 50%; left: 50%;
    width: 1920px; height: 1080px;
    transform-origin: center center;
    background: var(--bg);
    overflow: hidden;
  }

  /* Film grain */
  .stage::after {
    content: '';
    position: absolute; inset: 0;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='200' height='200' filter='url(%23n)' opacity='0.4'/></svg>");
    opacity: 0.02;
    pointer-events: none;
    mix-blend-mode: overlay;
    z-index: 200;
  }

  /* Watermark — always on top, adapts in brand reveal (handled by JS) */
  .watermark {
    position: absolute;
    top: 36px; left: 48px;
    font-family: var(--mono);
    font-size: 13px;
    letter-spacing: 0.2em;
    color: rgba(255,255,255,0.16);
    text-transform: uppercase;
    z-index: 400;
    pointer-events: none;
    transition: color 0.4s;
  }
  .watermark.on-light { color: rgba(26,25,24,0.22); }

  /* ============ Terminal (left) ============ */
  .terminal {
    position: absolute;
    top: 50%;
    left: 120px;
    transform: translateY(-50%);
    width: 620px;
    background: rgba(18, 18, 18, 1);
    border: 1px solid var(--hairline);
    border-radius: 14px;
    overflow: hidden;
    opacity: 0;
    will-change: opacity, transform;
    box-shadow:
      0 0 0 1px rgba(255,255,255,0.02),
      0 40px 80px -20px rgba(217,119,87,0.12);
  }
  .tty-head {
    display: flex; align-items: center; gap: 8px;
    padding: 14px 18px;
    border-bottom: 1px solid var(--hairline);
    background: rgba(255,255,255,0.02);
  }
  .tty-head .d { width: 11px; height: 11px; border-radius: 50%; background: rgba(255,255,255,0.1); }
  .tty-head .d.r { background: #5a2a2a; }
  .tty-head .d.y { background: #5a4a2a; }
  .tty-head .d.g { background: #2a5a35; }
  .tty-head .title {
    margin-left: 14px;
    font-family: var(--mono);
    font-size: 12px;
    color: var(--muted);
    letter-spacing: 0.04em;
  }
  .tty-body {
    padding: 32px 28px;
    font-family: var(--mono);
    font-size: 20px;
    line-height: 1.7;
    color: rgba(255,255,255,0.88);
    min-height: 220px;
  }
  .prompt { color: var(--accent); margin-right: 10px; }
  .comment { color: var(--ink-60); font-size: 16px; margin-bottom: 10px; }
  .typed { white-space: pre; }
  .cursor {
    display: inline-block;
    width: 10px; height: 24px;
    background: var(--accent);
    vertical-align: -4px;
    margin-left: 2px;
    animation: blink 1s steps(2) infinite;
  }
  @keyframes blink { 0%, 50% { opacity: 1; } 50.01%, 100% { opacity: 0; } }

  /* Arrow connector terminal → iPhone */
  .connector {
    position: absolute;
    top: 50%;
    left: 740px;
    width: 160px;
    height: 2px;
    transform: translateY(-50%);
    opacity: 0;
    background: linear-gradient(90deg, var(--accent) 0%, rgba(217,119,87,0) 100%);
    transform-origin: left center;
    will-change: opacity, transform;
  }

  /* ============ iPhone ============ */
  .phone-wrap {
    position: absolute;
    top: 50%;
    left: 1020px;
    transform: translateY(-50%);
    opacity: 0;
    will-change: opacity, transform;
  }
  .phone {
    width: 440px;
    height: 900px;
    background: #0e0e10;
    border-radius: 58px;
    padding: 12px;
    position: relative;
    box-shadow:
      0 0 0 1.5px rgba(255,255,255,0.14),
      0 0 0 8px rgba(30,30,32,1),
      0 80px 160px -20px rgba(0,0,0,0.85),
      0 30px 70px -20px rgba(217,119,87,0.1);
  }
  .phone::before {
    /* subtle metallic ring */
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 62px;
    background: linear-gradient(135deg, rgba(255,255,255,0.12), rgba(255,255,255,0) 40%, rgba(217,119,87,0.05) 80%, rgba(255,255,255,0.08));
    z-index: -1;
  }
  .screen {
    width: 416px;
    height: 876px;
    border-radius: 46px;
    overflow: hidden;
    position: relative;
    background: #F5F4F0;  /* default: claude mist */
  }
  .screen.dark { background: #0a0a0a; }

  /* Dynamic island */
  .island {
    position: absolute;
    top: 14px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 34px;
    background: #000;
    border-radius: 999px;
    z-index: 30;
  }
  /* Status bar */
  .status-bar {
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 54px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 34px 0 34px;
    font-family: -apple-system, "SF Pro Text", sans-serif;
    font-size: 15px;
    font-weight: 600;
    z-index: 20;
    pointer-events: none;
    color: inherit;
  }
  .status-bar .icons {
    display: flex; align-items: center; gap: 6px;
  }
  .status-bar .icons .bars {
    display: flex; align-items: flex-end; gap: 2px; height: 11px;
  }
  .status-bar .icons .bars div {
    width: 3px; background: currentColor; border-radius: 1px;
  }
  .status-bar .icons .bat {
    width: 26px; height: 12px;
    border: 1.2px solid currentColor; border-radius: 3px; padding: 1px;
    position: relative;
    opacity: 0.9;
  }
  .status-bar .icons .bat::after {
    content: ''; position: absolute; top: 3px; right: -3px; width: 2px; height: 6px;
    background: currentColor; border-radius: 0 1px 1px 0;
  }
  .status-bar .icons .bat .fill {
    width: 84%; height: 100%; background: currentColor; border-radius: 1px;
  }
  .home-indicator {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 140px;
    height: 5px;
    background: rgba(0,0,0,0.3);
    border-radius: 999px;
    z-index: 10;
  }
  .screen.dark .home-indicator { background: rgba(255,255,255,0.5); }

  /* Content area (below status bar) */
  .content {
    position: absolute;
    top: 64px; left: 0; right: 0; bottom: 30px;
    overflow: hidden;
    z-index: 5;
  }

  /* Screen views */
  .screen-view {
    position: absolute;
    inset: 0;
    opacity: 0;
    will-change: opacity, transform;
  }

  /* 1. Wireframe (ghost) */
  .wire {
    padding: 40px 28px;
  }
  .wire .ghost {
    background: rgba(26, 25, 24, 0.08);
    border-radius: 10px;
    margin-bottom: 14px;
  }
  .wire .g1 { height: 36px; width: 60%; }
  .wire .g2 { height: 180px; }
  .wire .g3 { height: 20px; width: 80%; }
  .wire .g4 { height: 20px; width: 50%; }
  .wire .g5 { height: 52px; margin-top: 24px; }

  /* 2. Home screen — 主屏 · pomodoro */
  .home-screen { padding: 40px 28px; color: var(--cd-ink); }
  .home-screen .kicker {
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 0.22em;
    color: var(--cd-dim);
    text-transform: uppercase;
  }
  .home-screen .title {
    font-family: var(--serif-cn);
    font-size: 40px;
    font-weight: 500;
    line-height: 1.15;
    margin-top: 10px;
    letter-spacing: -0.01em;
  }
  .home-screen .time-big {
    margin-top: 50px;
    font-family: var(--serif-en);
    font-size: 168px;
    font-weight: 200;
    line-height: 0.95;
    letter-spacing: -0.04em;
    color: var(--cd-ink);
  }
  .home-screen .time-big .sep { color: var(--accent); }
  .home-screen .sub {
    font-family: var(--sans);
    font-size: 15px;
    color: var(--cd-dim);
    margin-top: 18px;
    letter-spacing: 0.02em;
  }
  .home-screen .cta {
    margin-top: 64px;
    height: 62px;
    background: var(--cd-ink);
    color: #fff;
    border-radius: 999px;
    display: flex; align-items: center; justify-content: center;
    font-family: var(--sans);
    font-size: 17px;
    font-weight: 500;
    letter-spacing: 0.04em;
    position: relative;
  }
  .home-screen .cta::before {
    content: '';
    width: 0; height: 0;
    border-left: 10px solid #fff;
    border-top: 7px solid transparent;
    border-bottom: 7px solid transparent;
    margin-right: 10px;
  }

  /* 3. Timer · 计时 · ring */
  .timer-screen {
    padding: 40px 28px;
    color: var(--cd-ink);
    text-align: center;
  }
  .timer-screen .phase {
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 0.24em;
    color: var(--accent);
    text-transform: uppercase;
    text-align: left;
  }
  .ring-wrap {
    margin: 80px auto 0;
    width: 320px; height: 320px;
    position: relative;
  }
  .ring-wrap svg {
    width: 100%; height: 100%;
    transform: rotate(-90deg);
  }
  .ring-wrap .bg-ring {
    fill: none; stroke: rgba(26,25,24,0.08); stroke-width: 14;
  }
  .ring-wrap .fg-ring {
    fill: none; stroke: #D97757; stroke-width: 14; stroke-linecap: round;
    stroke-dasharray: 880;
    stroke-dashoffset: 880;
  }
  .ring-wrap .ring-label {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
  }
  .ring-wrap .rl-time {
    font-family: var(--serif-en);
    font-size: 86px;
    font-weight: 200;
    line-height: 1;
    letter-spacing: -0.03em;
    color: var(--cd-ink);
  }
  .ring-wrap .rl-tag {
    margin-top: 10px;
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 0.2em;
    color: var(--cd-dim);
    text-transform: uppercase;
  }
  .timer-screen .actions {
    margin-top: 60px;
    display: flex; gap: 14px; justify-content: center;
  }
  .timer-screen .act-btn {
    padding: 14px 32px;
    border-radius: 999px;
    background: rgba(26,25,24,0.05);
    font-family: var(--sans);
    font-size: 14px;
    font-weight: 500;
    color: var(--cd-ink);
    letter-spacing: 0.04em;
    border: 1px solid rgba(26,25,24,0.08);
  }
  .timer-screen .act-btn.primary {
    background: var(--cd-ink);
    color: #fff;
    border-color: transparent;
  }

  /* 4. Stats · 统计 · bar chart */
  .stats-screen { padding: 40px 28px; color: var(--cd-ink); }
  .stats-screen .stats-label {
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 0.24em;
    color: var(--cd-dim);
    text-transform: uppercase;
  }
  .stats-screen .stats-hero {
    font-family: var(--serif-en);
    font-size: 120px;
    font-weight: 200;
    line-height: 1;
    letter-spacing: -0.04em;
    margin-top: 10px;
  }
  .stats-screen .stats-hero .unit {
    font-size: 28px;
    color: var(--cd-dim);
    margin-left: 8px;
    font-weight: 300;
  }
  .stats-screen .stats-sub {
    font-family: var(--sans);
    font-size: 14px;
    color: var(--cd-dim);
    margin-top: 6px;
    letter-spacing: 0.02em;
  }
  .chart {
    margin-top: 52px;
    display: flex;
    gap: 10px;
    align-items: flex-end;
    height: 200px;
    padding: 0 4px;
  }
  .chart .bar {
    flex: 1;
    background: var(--accent);
    border-radius: 6px 6px 0 0;
    opacity: 0.85;
    transform-origin: bottom;
    will-change: transform;
  }
  .chart .bar.dim { background: rgba(26,25,24,0.15); }
  .chart-x {
    display: flex;
    justify-content: space-between;
    margin-top: 12px;
    font-family: var(--mono);
    font-size: 10px;
    color: var(--cd-dim);
    letter-spacing: 0.08em;
    padding: 0 4px;
  }

  /* 5. Settings · 设置 · list */
  .settings-screen { padding: 40px 28px; color: var(--cd-ink); }
  .settings-screen .title-row {
    font-family: var(--serif-cn);
    font-size: 40px;
    font-weight: 500;
    letter-spacing: -0.01em;
  }
  .settings-screen .list {
    margin-top: 40px;
    background: #FFFFFF;
    border-radius: 14px;
    overflow: hidden;
    border: 1px solid rgba(26,25,24,0.06);
  }
  .settings-screen .row {
    padding: 22px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid rgba(26,25,24,0.06);
  }
  .settings-screen .row:last-child { border-bottom: none; }
  .settings-screen .row .k {
    font-family: var(--sans);
    font-size: 16px;
    color: var(--cd-ink);
  }
  .settings-screen .row .v {
    font-family: var(--mono);
    font-size: 13px;
    color: var(--cd-dim);
    letter-spacing: 0.04em;
  }
  .toggle {
    width: 48px; height: 28px;
    border-radius: 999px;
    background: var(--cd-green);
    position: relative;
  }
  .toggle::after {
    content: ''; position: absolute;
    top: 3px; right: 3px;
    width: 22px; height: 22px;
    background: #fff;
    border-radius: 50%;
    box-shadow: 0 1px 2px rgba(0,0,0,0.15);
  }
  .toggle.off { background: rgba(26,25,24,0.15); }
  .toggle.off::after { left: 3px; right: auto; }

  /* Tab bar (bottom of home-like screens) */
  .tab-bar {
    position: absolute;
    bottom: 30px; left: 28px; right: 28px;
    height: 58px;
    background: #FFFFFF;
    border-radius: 999px;
    border: 1px solid rgba(26,25,24,0.08);
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: 0 14px;
    box-shadow: 0 10px 28px -10px rgba(0,0,0,0.15);
  }
  .tab-bar .tab {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    font-family: var(--mono);
    font-size: 10px;
    color: var(--cd-dim);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 8px 14px;
    border-radius: 999px;
  }
  .tab-bar .tab.active {
    background: var(--cd-ink);
    color: #fff;
  }
  .tab-bar .tab .ico {
    width: 18px; height: 18px;
    border-radius: 4px;
    background: currentColor;
    opacity: 0.9;
    margin-bottom: 3px;
  }

  /* Finger / tap */
  .tap {
    position: absolute;
    z-index: 40;
    width: 64px; height: 64px;
    pointer-events: none;
    opacity: 0;
    will-change: opacity, transform;
  }
  .tap .core {
    position: absolute;
    inset: 18px;
    background: rgba(217, 119, 87, 0.85);
    border-radius: 50%;
    box-shadow: 0 0 0 2px rgba(255,255,255,0.5), 0 0 24px rgba(217,119,87,0.5);
  }
  .tap .ring {
    position: absolute;
    inset: 0;
    border: 2px solid rgba(217,119,87,0.6);
    border-radius: 50%;
    animation: tapring 0.6s ease-out;
  }
  @keyframes tapring {
    0% { transform: scale(0.4); opacity: 1; }
    100% { transform: scale(1.3); opacity: 0; }
  }

  /* ============ Brand Reveal ============ */
  .brand-wall {
    position: absolute;
    inset: 0;
    background: var(--cd-bg);
    z-index: 300;
    opacity: 0;
    transform: translateY(100%);
    will-change: transform, opacity;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
  }
  .brand-wordmark {
    font-family: var(--serif-en);
    font-size: 132px;
    font-weight: 200;
    color: var(--cd-ink);
    letter-spacing: -0.04em;
    line-height: 1;
    opacity: 0;
    transform: scale(0.92);
    will-change: opacity, transform;
  }
  .brand-wordmark .dot { color: var(--accent); padding: 0 10px; font-weight: 300; }
  .brand-underline {
    margin-top: 28px;
    height: 2px;
    width: 0;
    background: var(--accent);
    will-change: width;
  }
  .brand-cn {
    margin-top: 30px;
    font-family: var(--serif-cn);
    font-size: 18px;
    font-weight: 300;
    color: var(--cd-dim);
    letter-spacing: 0.4em;
    opacity: 0;
    will-change: opacity;
  }
</style>
</head>
<body>

<div class="stage" id="stage">

  <div class="watermark">HUASHU · DESIGN</div>

  <!-- Terminal -->
  <div class="terminal" id="terminal">
    <div class="tty-head">
      <div class="d r"></div>
      <div class="d y"></div>
      <div class="d g"></div>
      <div class="title">~/projects</div>
    </div>
    <div class="tty-body">
      <div class="comment" id="comment" style="opacity:0">&gt; 说一句话，拿回一个能点的 App</div>
      <div style="margin-top:6px">
        <span class="prompt">$</span><span class="typed" id="typed"></span><span class="cursor" id="ttyCursor"></span>
      </div>
    </div>
  </div>

  <div class="connector" id="connector"></div>

  <!-- Phone -->
  <div class="phone-wrap" id="phoneWrap">
    <div class="phone">
      <div class="screen" id="screen">

        <!-- Status bar -->
        <div class="status-bar" id="statusBar" style="color:#1A1918">
          <span>9:41</span>
          <div class="icons">
            <div class="bars">
              <div style="height:4px"></div>
              <div style="height:6px"></div>
              <div style="height:8px"></div>
              <div style="height:10px"></div>
            </div>
            <div class="bat"><div class="fill"></div></div>
          </div>
        </div>

        <div class="island"></div>

        <div class="content">

          <!-- 1. Wireframe -->
          <div class="screen-view" id="view-wire">
            <div class="wire">
              <div class="ghost g1"></div>
              <div class="ghost g2"></div>
              <div class="ghost g3"></div>
              <div class="ghost g4"></div>
              <div class="ghost g5"></div>
            </div>
          </div>

          <!-- 2. Home -->
          <div class="screen-view" id="view-home">
            <div class="home-screen">
              <div class="kicker">POMODORO · 专注</div>
              <div class="title">下一件要做的事</div>
              <div class="time-big">25<span class="sep">:</span>00</div>
              <div class="sub">写完这一节，休息 5 分钟</div>
              <div class="cta">开始专注</div>
            </div>
          </div>

          <!-- 3. Timer -->
          <div class="screen-view" id="view-timer">
            <div class="timer-screen">
              <div class="phase">FOCUS · 第 1 轮</div>
              <div class="ring-wrap">
                <svg viewBox="0 0 320 320">
                  <circle class="bg-ring" cx="160" cy="160" r="140"/>
                  <circle class="fg-ring" id="fgRing" cx="160" cy="160" r="140"/>
                </svg>
                <div class="ring-label">
                  <div class="rl-time" id="ringTime">24:12</div>
                  <div class="rl-tag">剩余</div>
                </div>
              </div>
              <div class="actions">
                <div class="act-btn">暂停</div>
                <div class="act-btn primary">跳过</div>
              </div>
            </div>
          </div>

          <!-- 4. Stats -->
          <div class="screen-view" id="view-stats">
            <div class="stats-screen">
              <div class="stats-label">本周 · 统计</div>
              <div class="stats-hero">23<span class="unit">轮</span></div>
              <div class="stats-sub">比上周多出 5 轮</div>
              <div class="chart" id="chart">
                <div class="bar dim" style="height:30%"></div>
                <div class="bar" style="height:52%"></div>
                <div class="bar" style="height:70%"></div>
                <div class="bar" style="height:42%"></div>
                <div class="bar" style="height:86%"></div>
                <div class="bar" style="height:95%"></div>
                <div class="bar" style="height:64%"></div>
              </div>
              <div class="chart-x">
                <span>M</span><span>T</span><span>W</span><span>T</span><span>F</span><span>S</span><span>S</span>
              </div>
            </div>
          </div>

          <!-- 5. Settings -->
          <div class="screen-view" id="view-settings">
            <div class="settings-screen">
              <div class="title-row">设置</div>
              <div class="list">
                <div class="row">
                  <span class="k">专注时长</span>
                  <span class="v">25 MIN</span>
                </div>
                <div class="row">
                  <span class="k">白噪音</span>
                  <div class="toggle"></div>
                </div>
                <div class="row">
                  <span class="k">提醒铃声</span>
                  <div class="toggle off"></div>
                </div>
                <div class="row">
                  <span class="k">主题</span>
                  <span class="v">CLAUDE MIST</span>
                </div>
              </div>
            </div>
          </div>

          <!-- Tab bar (shared, appears on home/stats/settings) -->
          <div class="tab-bar" id="tabBar" style="display:none">
            <div class="tab active" data-tab="home">
              <div class="ico"></div>
              <span>HOME</span>
            </div>
            <div class="tab" data-tab="timer">
              <div class="ico"></div>
              <span>TIMER</span>
            </div>
            <div class="tab" data-tab="stats">
              <div class="ico"></div>
              <span>STATS</span>
            </div>
            <div class="tab" data-tab="settings">
              <div class="ico"></div>
              <span>SET</span>
            </div>
          </div>

        </div>

        <div class="home-indicator"></div>

        <!-- Tap overlay (inside screen so z-index > content) -->
        <div class="tap" id="tap">
          <div class="ring"></div>
          <div class="core"></div>
        </div>

      </div>
    </div>
  </div>

  <!-- Brand reveal -->
  <div class="brand-wall" id="brandWall">
    <div class="brand-wordmark" id="brandWord">huashu<span class="dot">·</span>design</div>
    <div class="brand-underline" id="brandLine"></div>
    <div class="brand-cn" id="brandCn">说一句话 · 拿回一个 App</div>
  </div>

</div>

<script>
(() => {
  // ── Scale to viewport (1920×1080 canvas) ─────────────────────────
  function fit() {
    const stage = document.getElementById('stage');
    const s = Math.min(window.innerWidth / 1920, window.innerHeight / 1080);
    stage.style.transform = `translate(-50%, -50%) scale(${s})`;
  }
  fit();
  window.addEventListener('resize', fit);

  // ── Easing ───────────────────────────────────────────────────────
  const expoOut = t => (t <= 0 ? 0 : t >= 1 ? 1 : 1 - Math.pow(2, -10 * t));
  const expoIn  = t => (t <= 0 ? 0 : t >= 1 ? 1 : Math.pow(2, 10 * (t - 1)));
  const cubicInOut = t => t < 0.5 ? 4*t*t*t : 1 - Math.pow(-2*t+2, 3)/2;
  const cubicOut = t => 1 - Math.pow(1 - t, 3);
  const clamp = (v, a, b) => Math.max(a, Math.min(b, v));
  const lerp = (a, b, t) => a + (b - a) * t;

  // Animate a value by requestAnimationFrame between timeline markers
  function seg(t, start, end) {
    return clamp((t - start) / (end - start), 0, 1);
  }

  // ── Elements ─────────────────────────────────────────────────────
  const el = (id) => document.getElementById(id);
  const terminal = el('terminal');
  const comment  = el('comment');
  const typed    = el('typed');
  const ttyCursor = el('ttyCursor');
  const connector = el('connector');
  const phoneWrap = el('phoneWrap');
  const views = {
    wire: el('view-wire'),
    home: el('view-home'),
    timer: el('view-timer'),
    stats: el('view-stats'),
    settings: el('view-settings'),
  };
  const tap = el('tap');
  const tabBar = el('tabBar');
  const fgRing = el('fgRing');
  const ringTime = el('ringTime');
  const brandWall = el('brandWall');
  const brandWord = el('brandWord');
  const brandLine = el('brandLine');
  const brandCn = el('brandCn');

  // Typing text
  const typeStr = 'make a pomodoro app';
  function setTyping(progress) {
    const n = Math.floor(typeStr.length * progress);
    typed.textContent = typeStr.slice(0, n);
  }

  // Show/hide views — hard swap (no cross-fade overlap)
  function showView(name) {
    Object.keys(views).forEach(k => {
      const isActive = (k === name);
      views[k].style.opacity = isActive ? '1' : '0';
      views[k].style.visibility = isActive ? 'visible' : 'hidden';
      views[k].style.transform = isActive ? 'translateY(0)' : 'translateY(0)';
      views[k].style.transition = isActive ? 'opacity 0.22s ease-out' : 'none';
    });
  }

  // Active tab
  function setActiveTab(name) {
    document.querySelectorAll('.tab-bar .tab').forEach(t => {
      t.classList.toggle('active', t.dataset.tab === name);
    });
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  // Play tap at screen coords (relative to .screen: 416×876)
  function playTap(x, y) {
    tap.style.left = (x - 32) + 'px';
    tap.style.top = (y - 32) + 'px';
    tap.style.opacity = '1';
    // restart keyframe animation
    const ring = tap.querySelector('.ring');
    ring.style.animation = 'none';
    ring.offsetHeight; // reflow
    ring.style.animation = '';
    // fade out
    setTimeout(() => { tap.style.opacity = '0'; }, 550);
  }

  // ── SFX via WebAudio ─────────────────────────────────────────────
  let audioCtx = null;
  function ac() {
    if (!audioCtx) {
      try { audioCtx = new (window.AudioContext || window.webkitAudioContext)(); } catch(e){}
    }
    return audioCtx;
  }
  function sfxClick(vol = 0.16) {
    const c = ac(); if (!c) return;
    const o = c.createOscillator();
    const g = c.createGain();
    o.type = 'square';
    o.frequency.setValueAtTime(1200, c.currentTime);
    o.frequency.exponentialRampToValueAtTime(500, c.currentTime + 0.04);
    g.gain.setValueAtTime(vol, c.currentTime);
    g.gain.exponentialRampToValueAtTime(0.001, c.currentTime + 0.05);
    o.connect(g); g.connect(c.destination);
    o.start(); o.stop(c.currentTime + 0.06);
  }
  function sfxEnter() {
    const c = ac(); if (!c) return;
    const o = c.createOscillator();
    const g = c.createGain();
    o.type = 'sine';
    o.frequency.setValueAtTime(180, c.currentTime);
    o.frequency.exponentialRampToValueAtTime(440, c.currentTime + 0.25);
    g.gain.setValueAtTime(0.22, c.currentTime);
    g.gain.exponentialRampToValueAtTime(0.001, c.currentTime + 0.3);
    o.connect(g); g.connect(c.destination);
    o.start(); o.stop(c.currentTime + 0.32);
  }
  function sfxChime() {
    const c = ac(); if (!c) return;
    [523.25, 783.99].forEach((f, i) => {
      const o = c.createOscillator();
      const g = c.createGain();
      o.type = 'sine';
      o.frequency.value = f;
      g.gain.setValueAtTime(0, c.currentTime + i * 0.08);
      g.gain.linearRampToValueAtTime(0.18, c.currentTime + i * 0.08 + 0.04);
      g.gain.exponentialRampToValueAtTime(0.001, c.currentTime + i * 0.08 + 1.2);
      o.connect(g); g.connect(c.destination);
      o.start(c.currentTime + i * 0.08);
      o.stop(c.currentTime + i * 0.08 + 1.25);
    });
  }

  // ── Timeline ─────────────────────────────────────────────────────
  const DURATION = 10.0;

  const sfxFired = new Set();
  function fireOnce(id, fn) {
    if (sfxFired.has(id)) return;
    sfxFired.add(id);
    fn();
  }

  // Screen switch schedule (within Beat 2, 2.0s → 8.0s)
  // Tap coords are relative to the 416×876 .screen
  const schedule = [
    { t: 2.0, view: 'wire',     tabIco: null,       tap: null },
    { t: 3.1, view: 'home',     tabIco: 'home',     tap: null },                 // home materializes (no tap — it's the fill moment)
    { t: 4.4, view: 'timer',    tabIco: 'timer',    tap: {x: 208, y: 624} },     // tap "开始专注" CTA
    { t: 6.3, view: 'stats',    tabIco: 'stats',    tap: {x: 300, y: 810} },     // tap stats tab
    { t: 7.5, view: 'settings', tabIco: 'settings', tap: {x: 370, y: 810} },     // tap settings tab
  ];
  let scheduleIdx = 0;

  let startTime = null;
  let raf = null;

  function tick(now) {
    if (!startTime) startTime = now;
    const t = (now - startTime) / 1000;

    // ── Beat 1: 0-2s ─────────────────────────────────────────
    // Terminal fade in (0 → 0.4s)
    {
      const k = expoOut(seg(t, 0.0, 0.4));
      terminal.style.opacity = k;
      terminal.style.transform = `translateY(-50%) translateX(${lerp(-30, 0, k)}px)`;
    }
    // iPhone fade in (0.2 → 0.9s)
    {
      const k = expoOut(seg(t, 0.2, 0.9));
      phoneWrap.style.opacity = k;
      phoneWrap.style.transform = `translateY(-50%) translateX(${lerp(60, 0, k)}px) scale(${lerp(0.96, 1, k)})`;
      if (t > 0.25) fireOnce('enter', sfxEnter);
    }
    // Connector fade
    {
      const k = expoOut(seg(t, 0.7, 1.2));
      connector.style.opacity = k;
      connector.style.transform = `translateY(-50%) scaleX(${k})`;
    }
    // Comment
    {
      const k = expoOut(seg(t, 0.8, 1.2));
      comment.style.opacity = k * 0.82;
    }
    // Typing (0.6 → 1.9s)
    {
      const k = cubicInOut(seg(t, 0.6, 1.9));
      setTyping(k);
      // key click SFX at certain progress points
      if (t > 0.8 && t < 1.85) {
        const charsShown = Math.floor(typeStr.length * k);
        const key = 'typ' + charsShown;
        if (!sfxFired.has(key) && charsShown > 0 && charsShown % 3 === 0) {
          fireOnce(key, () => sfxClick(0.08));
        }
      }
    }
    // Hide cursor when typing done
    ttyCursor.style.opacity = t > 1.85 ? '0' : '1';

    // ── Beat 2: 2-8s ─────────────────────────────────────────
    // Execute scheduled screen transitions
    while (scheduleIdx < schedule.length && t >= schedule[scheduleIdx].t) {
      const s = schedule[scheduleIdx];
      showView(s.view);
      // status bar color: dark-text on light screens, but wire also light, keep dark
      if (s.view === 'wire') {
        tabBar.style.display = 'none';
      } else {
        tabBar.style.display = 'flex';
        setActiveTab(s.tabIco);
      }
      if (s.tap) {
        // small delay so tap appears at moment of switch
        setTimeout(() => playTap(s.tap.x, s.tap.y), 120);
        if (s.view !== 'wire') fireOnce('click_' + s.view, () => sfxClick(0.18));
      }
      scheduleIdx++;
    }

    // Timer ring animation: once timer appears (4.4s), animate ring from empty → 42% filled
    if (t >= 4.4 && t < 6.3) {
      const ringT = clamp((t - 4.5) / 1.2, 0, 1);
      const fillPct = expoOut(ringT) * 0.42;
      const offset = 880 * (1 - fillPct);
      // Set as both style AND attr so neither overrides the other
      fgRing.style.strokeDashoffset = offset;
      fgRing.setAttribute('stroke-dashoffset', offset);
      // Count down visually: 24:12 → 14:03
      const mins = Math.floor(lerp(24, 14, expoOut(ringT)));
      const secs = Math.floor(lerp(12, 3, expoOut(ringT)));
      ringTime.textContent = String(mins).padStart(2,'0') + ':' + String(secs).padStart(2,'0');
    }

    // ── Beat 3: 8-10s ────────────────────────────────────────
    // Phone + terminal fade out fast (7.5 → 7.9) so wall doesn't guillotine
    if (t >= 7.5) {
      const k = cubicOut(seg(t, 7.5, 7.9));
      phoneWrap.style.opacity = String(1 - k);
      phoneWrap.style.transform = `translateY(-50%) scale(${lerp(1, 0.94, k)})`;
      terminal.style.opacity = String(1 - k);
      terminal.style.transform = `translateY(-50%) scale(${lerp(1, 0.96, k)})`;
      connector.style.opacity = String(1 - k);
    }
    // Brand wall slides up (7.9 → 8.6) — starts AFTER phone is gone
    {
      const k = expoOut(seg(t, 7.9, 8.6));
      brandWall.style.transform = `translateY(${lerp(100, 0, k)}%)`;
      brandWall.style.opacity = k > 0 ? '1' : '0';
      const watermark = document.querySelector('.watermark');
      if (k > 0.6) watermark.classList.add('on-light');
      else watermark.classList.remove('on-light');
    }
    // Wordmark appears
    {
      const k = expoOut(seg(t, 8.5, 9.2));
      brandWord.style.opacity = k;
      brandWord.style.transform = `scale(${lerp(0.92, 1, k)})`;
      if (t > 8.55) fireOnce('chime', sfxChime);
    }
    // Underline
    {
      const k = expoOut(seg(t, 9.0, 9.6));
      brandLine.style.width = (280 * k) + 'px';
    }
    // CN label
    {
      const k = cubicOut(seg(t, 9.3, 9.9));
      brandCn.style.opacity = k * 0.9;
    }

    if (t < DURATION) {
      raf = requestAnimationFrame(tick);
    } else {
      // Hold final frame
      if (!window.__recording) {
        // loop for preview
        setTimeout(() => {
          startTime = null;
          scheduleIdx = 0;
          sfxFired.clear();
          // Reset views
          showView('wire');
          tabBar.style.display = 'none';
          fgRing.style.strokeDashoffset = 880;
          fgRing.setAttribute('stroke-dashoffset', 880);
          ringTime.textContent = '24:12';
          // Reset brand
          brandWall.style.transform = 'translateY(100%)';
          brandWall.style.opacity = '0';
          brandWord.style.opacity = '0';
          brandWord.style.transform = 'scale(0.92)';
          brandLine.style.width = '0';
          brandCn.style.opacity = '0';
          // Reset terminal typing
          typed.textContent = '';
          ttyCursor.style.opacity = '1';
          comment.style.opacity = '0';
          terminal.style.opacity = '0';
          phoneWrap.style.opacity = '0';
          connector.style.opacity = '0';
          document.querySelector('.watermark').classList.remove('on-light');
          raf = requestAnimationFrame(tick);
        }, 600);
      }
    }
  }

  // seek(0) helper for render-video.js
  window.__seek = function(s) {
    startTime = performance.now() - s * 1000;
  };

  // Initial state
  showView('wire');
  tabBar.style.display = 'none';

  // Wait for fonts, then start animation
  (document.fonts ? document.fonts.ready : Promise.resolve()).then(() => {
    requestAnimationFrame((now) => {
      startTime = now;
      window.__ready = true;
      raf = requestAnimationFrame(tick);
    });
  });
})();
</script>

</body>
</html>