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

    :root {
      --bg-primary: #0a0a1a;
      --glass: rgba(255, 255, 255, 0.11);
      --glass-border: rgba(255, 255, 255, 0.16);
      --glass-strong: rgba(255, 255, 255, 0.16);
      --text: #f5f5f7;
      --text-secondary: rgba(255, 255, 255, 0.65);
      --accent: #0A84FF;
      --accent-glow: rgba(10, 132, 255, 0.25);
      --green: #30D158;
      --red: #FF453A;
      --orange: #FF9F0A;
      --purple: #BF5AF2;
      --radius: 22px;
      --glass-blur: 44px;
      --glass-saturate: 1.8;
      --glass-shadow: 0 16px 40px rgba(0, 0, 0, 0.24);
      --motion-smooth: 320ms cubic-bezier(0.22, 1, 0.36, 1);
    }

    @media (prefers-color-scheme: light) {
      :root {
        --bg-primary: #f2f2f7;
        --glass: rgba(255, 255, 255, 0.72);
        --glass-border: rgba(0, 0, 0, 0.1);
        --glass-strong: rgba(255, 255, 255, 0.82);
        --text: #1d1d1f;
        --text-secondary: rgba(0, 0, 0, 0.55);
        --accent-glow: rgba(10, 132, 255, 0.1);
        --glass-shadow: 0 14px 34px rgba(0, 0, 0, 0.1);
      }
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, sans-serif;
      background: var(--bg-primary);
      min-height: 100vh;
      color: var(--text);
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
      overflow-x: hidden;
    }

    /* Animated gradient background */
    .bg-gradient {
      position: fixed;
      inset: 0;
      z-index: -1;
      background:
        radial-gradient(ellipse 60% 50% at 20% 30%, rgba(10, 132, 255, 0.15) 0%, transparent 60%),
        radial-gradient(ellipse 50% 40% at 80% 20%, rgba(191, 90, 242, 0.12) 0%, transparent 55%),
        radial-gradient(ellipse 55% 45% at 50% 85%, rgba(48, 209, 88, 0.1) 0%, transparent 55%),
        radial-gradient(ellipse 40% 35% at 75% 70%, rgba(255, 159, 10, 0.1) 0%, transparent 50%);
      animation: bgShift 12s ease-in-out infinite alternate;
    }

    @keyframes bgShift {
      0% { filter: hue-rotate(0deg); }
      100% { filter: hue-rotate(20deg); }
    }

    @media (prefers-reduced-motion: reduce) {
      .bg-gradient { animation: none; }
      .section, .hero-card, .permission-card, .service-card, .contact-card { animation: none; opacity: 1; transform: none; }
    }

    /* Hero header */
    .hero {
      padding: 60px 24px 40px;
      text-align: center;
      max-width: 700px;
      margin: 0 auto;
    }

    .hero-icon {
      width: 72px;
      height: 72px;
      border-radius: 18px;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
      margin-bottom: 20px;
    }

    .hero h1 {
      font-size: 42px;
      font-weight: 700;
      letter-spacing: -1px;
      margin-bottom: 6px;
      background: linear-gradient(135deg, var(--accent) 0%, var(--purple) 100%);
      -webkit-background-clip: text;
      background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-subtitle {
      font-size: 20px;
      font-weight: 400;
      color: var(--text-secondary);
      letter-spacing: -0.2px;
    }

    .hero-version {
      display: inline-block;
      margin-top: 12px;
      padding: 4px 14px;
      border-radius: 980px;
      background: var(--glass);
      backdrop-filter: blur(18px) saturate(1.6);
      -webkit-backdrop-filter: blur(18px) saturate(1.6);
      border: 1px solid var(--glass-border);
      font-size: 13px;
      color: var(--text-secondary);
      font-weight: 500;
    }

    .last-updated {
      font-size: 13px;
      color: var(--text-secondary);
      margin-top: 10px;
    }

    /* Container */
    .container {
      max-width: 720px;
      margin: 0 auto;
      padding: 0 24px 80px;
    }

    /* Glass card sections */
    .section {
      background: var(--glass);
      backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
      -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
      border: 1px solid var(--glass-border);
      border-radius: var(--radius);
      box-shadow: var(--glass-shadow);
      padding: 32px;
      margin-bottom: 20px;
      opacity: 0;
      transform: translateY(16px);
      animation: fadeUp 0.5s var(--motion-smooth) forwards;
      transition: background-color var(--motion-smooth), border-color var(--motion-smooth), box-shadow var(--motion-smooth);
    }

    .section:nth-child(1) { animation-delay: 0.1s; }
    .section:nth-child(2) { animation-delay: 0.15s; }
    .section:nth-child(3) { animation-delay: 0.2s; }
    .section:nth-child(4) { animation-delay: 0.25s; }
    .section:nth-child(5) { animation-delay: 0.3s; }
    .section:nth-child(6) { animation-delay: 0.35s; }
    .section:nth-child(7) { animation-delay: 0.4s; }
    .section:nth-child(8) { animation-delay: 0.45s; }

    @keyframes fadeUp {
      to { opacity: 1; transform: translateY(0); }
    }

    .section-header {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 18px;
    }

    .section-icon {
      width: 40px;
      height: 40px;
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      flex-shrink: 0;
    }

    .section-icon.blue { background: rgba(10, 132, 255, 0.15); }
    .section-icon.green { background: rgba(48, 209, 88, 0.15); }
    .section-icon.red { background: rgba(255, 69, 58, 0.15); }
    .section-icon.orange { background: rgba(255, 159, 10, 0.15); }
    .section-icon.purple { background: rgba(191, 90, 242, 0.15); }

    .section h2 {
      font-size: 22px;
      font-weight: 600;
      letter-spacing: -0.3px;
    }

    .section p {
      font-size: 15px;
      line-height: 1.7;
      color: var(--text-secondary);
      margin-bottom: 14px;
    }

    .section p:last-child {
      margin-bottom: 0;
    }

    /* Highlight card (TL;DR) */
    .highlight-card {
      background: linear-gradient(135deg, rgba(48, 209, 88, 0.12) 0%, rgba(10, 132, 255, 0.08) 100%);
      border: 1px solid rgba(48, 209, 88, 0.2);
      border-radius: 14px;
      padding: 20px 24px;
      margin-bottom: 24px;
      text-align: center;
    }

    .highlight-card p {
      font-size: 17px;
      font-weight: 600;
      color: var(--green);
      margin: 0;
      line-height: 1.5;
    }

    .highlight-card .shield {
      font-size: 28px;
      display: block;
      margin-bottom: 8px;
    }

    /* Lists */
    .info-list {
      list-style: none;
      margin: 0;
      padding: 0;
    }

    .info-list li {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      padding: 10px 0;
      font-size: 15px;
      line-height: 1.6;
      color: var(--text-secondary);
      border-bottom: 1px solid var(--glass-border);
    }

    .info-list li:last-child {
      border-bottom: none;
      padding-bottom: 0;
    }

    .info-list li:first-child {
      padding-top: 0;
    }

    .list-icon {
      flex-shrink: 0;
      width: 24px;
      height: 24px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 12px;
      margin-top: 2px;
    }

    .list-icon.check {
      background: rgba(48, 209, 88, 0.15);
      color: var(--green);
    }

    .list-icon.cross {
      background: rgba(255, 69, 58, 0.15);
      color: var(--red);
    }

    .list-icon.info {
      background: rgba(10, 132, 255, 0.15);
      color: var(--accent);
    }

    .list-icon.lock {
      background: rgba(191, 90, 242, 0.15);
      color: var(--purple);
    }

    .list-text strong {
      color: var(--text);
      font-weight: 600;
    }

    /* Permission cards */
    .perm-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
    }

    .perm-card {
      background: var(--glass-strong);
      border: 1px solid var(--glass-border);
      border-radius: 14px;
      padding: 18px;
      text-align: center;
    }

    .perm-card .perm-icon {
      font-size: 28px;
      margin-bottom: 8px;
    }

    .perm-card .perm-name {
      font-size: 14px;
      font-weight: 600;
      color: var(--text);
      margin-bottom: 4px;
    }

    .perm-card .perm-desc {
      font-size: 12px;
      color: var(--text-secondary);
      line-height: 1.4;
    }

    /* Service cards */
    .service-list {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .service-card {
      display: flex;
      align-items: flex-start;
      gap: 14px;
      background: var(--glass-strong);
      border: 1px solid var(--glass-border);
      border-radius: 14px;
      padding: 16px 18px;
    }

    .service-icon {
      font-size: 22px;
      flex-shrink: 0;
      margin-top: 2px;
    }

    .service-info {
      flex: 1;
    }

    .service-name {
      font-size: 15px;
      font-weight: 600;
      color: var(--text);
      margin-bottom: 4px;
    }

    .service-desc {
      font-size: 13px;
      color: var(--text-secondary);
      line-height: 1.5;
    }

    .service-apis {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      margin-top: 8px;
    }

    .api-tag {
      display: inline-block;
      padding: 2px 10px;
      border-radius: 980px;
      background: rgba(10, 132, 255, 0.1);
      border: 1px solid rgba(10, 132, 255, 0.15);
      font-size: 11px;
      font-weight: 500;
      color: var(--accent);
    }

    /* Security badges */
    .security-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 10px;
    }

    .security-badge {
      display: flex;
      align-items: center;
      gap: 10px;
      background: var(--glass-strong);
      border: 1px solid var(--glass-border);
      border-radius: 12px;
      padding: 14px 16px;
    }

    .badge-icon {
      font-size: 20px;
      flex-shrink: 0;
    }

    .badge-text {
      font-size: 13px;
      color: var(--text-secondary);
      line-height: 1.4;
    }

    .badge-text strong {
      color: var(--text);
      display: block;
      font-size: 14px;
      margin-bottom: 2px;
    }

    /* Contact card */
    .contact-card {
      display: flex;
      align-items: center;
      gap: 16px;
      background: var(--glass-strong);
      border: 1px solid var(--glass-border);
      border-radius: 14px;
      padding: 18px 22px;
      margin-bottom: 10px;
    }

    .contact-card:last-child {
      margin-bottom: 0;
    }

    .contact-icon {
      font-size: 32px;
      flex-shrink: 0;
    }

    .contact-info {
      flex: 1;
    }

    .contact-label {
      font-size: 13px;
      color: var(--text-secondary);
      margin-bottom: 2px;
    }

    .contact-link {
      font-size: 16px;
      color: var(--accent);
      text-decoration: none;
      font-weight: 600;
    }

    .contact-link:hover {
      text-decoration: underline;
    }

    /* Footer */
    .footer {
      text-align: center;
      padding: 30px 24px 40px;
      font-size: 13px;
      color: var(--text-secondary);
    }

    .footer-brand {
      font-weight: 600;
      color: var(--text);
    }

    .footer span {
      margin: 0 4px;
    }

    /* Responsive */
    @media (max-width: 600px) {
      .hero { padding: 40px 20px 28px; }
      .hero h1 { font-size: 32px; }
      .hero-subtitle { font-size: 17px; }
      .section { padding: 24px 20px; border-radius: 16px; }
      .perm-grid, .security-grid { grid-template-columns: 1fr; }
      .contact-card { flex-direction: column; text-align: center; }
    }

    .footer-link {
      color: var(--text);
      font-weight: 600;
      text-decoration: none;
    }