:root {
      --bg: #f6f6f6;
      --text: #222;
      --muted: #9b9b9b;
      --primary: #1f86ff;
      --line: #e9e9e9;
      --shadow: 0 12px 34px rgba(0,0,0,.08);
    }
    * { box-sizing: border-box; }
    html, body {
      margin: 0;
      padding: 0;
      background: var(--bg);
      color: var(--text);
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    }
    body { min-height: 100vh; }
    .page {
      max-width: 480px;
      margin: 0 auto;
      min-height: 100vh;
      background: #f8f8f8;
      padding-bottom: 40px;
    }
    .top-decor {
      height: 24px;
      width: 100%;
      background:
        linear-gradient(90deg,
          #7ea1ff 0 7%, #f2a07a 7% 15%, #86a8ff 15% 22%, #f5b37d 22% 31%,
          #79a6f8 31% 40%, #efc96e 40% 48%, #8fd7ff 48% 60%, #b8e17e 60% 67%,
          #7cc3ff 67% 79%, #f1b27a 79% 88%, #8ad7ff 88% 100%);
      clip-path: polygon(
        0 0, 100% 0, 100% 30%, 96% 30%, 96% 100%, 91% 100%, 91% 30%,
        84% 30%, 84% 78%, 79% 78%, 79% 30%, 72% 30%, 72% 100%, 67% 100%, 67% 30%,
        60% 30%, 60% 86%, 55% 86%, 55% 30%, 48% 30%, 48% 100%, 43% 100%, 43% 30%,
        36% 30%, 36% 78%, 31% 78%, 31% 30%, 24% 30%, 24% 100%, 19% 100%, 19% 30%,
        12% 30%, 12% 78%, 7% 78%, 7% 30%, 0 30%);
    }
    .hero {
      padding: 30px 22px 15px;
      text-align: center;
      background: #f8f8f8;
    }
    .icon-ring {
      width: 154px;
      height: 154px;
      margin: 0 auto 22px;
      border-radius: 50%;
      background: linear-gradient(180deg, #ffffff, #f2f2f2);
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: var(--shadow);
    }
    .icon {
      width: 92px;
      height: 92px;
      border-radius: 22px;
      object-fit: cover;
      box-shadow: 0 8px 18px rgba(0,0,0,.15);
      background: #fff;
    }
    .app-name {
      font-size: 26px;
      line-height: 1.2;
      font-weight: 700;
      margin: 0;
      letter-spacing: 1px;
    }
    .meta {
      margin-top: 18px;
      color: var(--muted);
      font-size: 15px;
      line-height: 1.9;
    }
    .split {
      margin: 8px 24px 0;
      border-top: 1px solid var(--line);
    }
    .content {
      padding: 22px 24px 0;
    }
    .tip {
      display: flex;
      align-items: center;
      gap: 10px;
      color: #3f8cf7;
      font-size: 16px;
      line-height: 1.6;
      margin-bottom: 22px;
      flex-wrap: wrap;
    }
    .tip .icon-like { font-size: 20px; }
    .download-btn {
      width: 100%;
      max-width: 270px;
      height: 56px;
      margin: 0 auto;
      border: 0;
      border-radius: 999px;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      background: linear-gradient(180deg, #2892ff, #1378f1);
      color: #fff;
      font-size: 18px;
      font-weight: 600;
      box-shadow: 0 12px 22px rgba(31, 134, 255, .28);
      cursor: pointer;
    }
    .download-btn:active { transform: scale(.985); }
    .subtext {
      text-align: center;
      color: var(--muted);
      font-size: 15px;
      margin: 18px 0 28px;
    }
    .qr-wrap {
      width: 250px;
      margin: 20px auto 12px;
      padding: 16px;
      background: #fff;
      border: 1px solid #ddd;
      position: relative;
    }
    #qrcode {
      width: 218px;
      height: 218px;
      margin: 0 auto;
      position: relative;
    }
    #qrcode img, #qrcode canvas {
      display: block;
      margin: 0 auto;
    }
    .qr-logo {
      position: absolute;
      left: 50%;
      top: 50%;
      width: 54px;
      height: 54px;
      transform: translate(-50%, -50%);
      border-radius: 12px;
      border: 3px solid #fff;
      object-fit: cover;
      background: #fff;
      box-shadow: 0 4px 12px rgba(0,0,0,.2);
      pointer-events: none;
    }
    .qr-label {
      text-align: center;
      color: var(--muted);
      font-size: 15px;
      margin: 10px 0 32px;
    }
    .section-title {
      font-size: 20px;
      font-weight: 700;
      margin: 0 0 18px;
    }
    .desc {
      color: #666;
      font-size: 17px;
      line-height: 1.9;
      padding-bottom: 20px;
    }
    .footer-note {
      text-align: center;
      color: #c5c5c5;
      font-size: 13px;
      margin-top: 26px;
    }
    @media (max-width: 380px) {
      .hero { padding-top: 42px; }
      .icon-ring { width: 132px; height: 132px; }
      .icon { width: 82px; height: 82px; }
      .qr-wrap { width: 220px; }
      #qrcode { width: 188px; height: 188px; }
      .download-btn { max-width: 240px; }
    }
    .download-actions {
      display: flex;
      flex-direction: column;
      gap: 14px;
      align-items: center;
    }