:root {
    --bg: #0a0f1a;
    --bg-light: #111827;
    --bg-card: rgba(17, 24, 39, 0.65);
    --border: rgba(56, 189, 248, 0.12);
    --border-hover: rgba(56, 189, 248, 0.3);
    --accent: #00d4ff;
    --accent-2: #0ea5e9;
    --accent-glow: rgba(0, 212, 255, 0.15);
    --coral: #ff6b4a;
    --coral-glow: rgba(255, 107, 74, 0.2);
    --text: #e2e8f0;
    --text-dim: #94a3b8;
    --text-bright: #f8fafc;
    --success: #22d3ee;
    --warn: #fbbf24;
    --danger: #f87171;
    --glass: linear-gradient(135deg, rgba(17,24,39,0.7), rgba(10,15,26,0.8));
  }
  * { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }
  html { scroll-behavior: smooth; }
  body { font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", "Noto Sans", sans-serif; color: var(--text); line-height: 1.65; background: var(--bg); font-size: 15px; }
  a { color: inherit; text-decoration: none; }

  /* Animated background */
  .app { max-width: 480px; margin: 0 auto; min-height: 100vh; padding-bottom: calc(100px + env(safe-area-inset-bottom)); overflow: hidden; isolation: isolate; position: relative; }
  .app::before { content: ''; position: fixed; inset: 0; z-index: -2; background: var(--bg); }
  .app::after { content: ''; position: fixed; top: -50%; left: -50%; width: 200%; height: 200%; z-index: -1; background: radial-gradient(ellipse at 20% 20%, rgba(0,212,255,0.04) 0%, transparent 50%), radial-gradient(ellipse at 80% 80%, rgba(255,107,74,0.03) 0%, transparent 50%), radial-gradient(ellipse at 50% 50%, rgba(14,165,233,0.02) 0%, transparent 60%); animation: bgShift 20s ease-in-out infinite; pointer-events: none; }
  @keyframes bgShift { 0%,100% { transform: translate(0,0) scale(1); } 50% { transform: translate(-2%,-2%) scale(1.02); } }

  section { padding: 40px 22px; position: relative; }
  .alt { background: linear-gradient(180deg, rgba(0,212,255,0.02), transparent); }

  /* ===== LOGO ===== */
  .logo-wrap { display: inline-flex; align-items: center; justify-content: center; }
  .logo-wrap svg { display: block; }

  /* ===== HEADER ===== */
  header { position: sticky; top: 0; z-index: 20; background: rgba(10,15,26,0.85); backdrop-filter: blur(20px) saturate(150%); -webkit-backdrop-filter: blur(20px) saturate(150%); display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 12px 18px; border-bottom: 1px solid var(--border); }
  .brand { display: flex; align-items: center; gap: 10px; color: var(--text-bright); font-weight: 800; font-size: 17px; min-width: 0; letter-spacing: -0.3px; }
  .brand .logo-wrap { width: 36px; height: 36px; flex: none; }
  .brand small { display: block; font-weight: 500; font-size: 11px; color: var(--text-dim); line-height: 1.2; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; letter-spacing: 0; }
  .head-right { display: flex; align-items: center; gap: 8px; flex: none; }
  .lang { background: rgba(255,255,255,0.04); color: var(--text); border: 1px solid var(--border); border-radius: 10px; padding: 6px 10px; font-size: 13px; font-family: inherit; height: 34px; }
  .lang option { color: #000; }
  header .mini { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: var(--bg); font-weight: 800; font-size: 13px; padding: 8px 16px; border-radius: 10px; white-space: nowrap; box-shadow: 0 4px 16px rgba(0,212,255,0.25); transition: transform .15s, box-shadow .15s; }
  header .mini:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(0,212,255,0.35); }
  .read-bar { position: absolute; left: 0; right: 0; bottom: -1px; height: 2px; pointer-events: none; }
  .read-bar i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--accent), var(--coral)); box-shadow: 0 0 12px rgba(0,212,255,0.6); transition: width .12s linear; }

  /* ===== HERO ===== */
  .hero { text-align: center; padding: 44px 22px 48px; position: relative; }
  .hero .logo-wrap { width: 110px; height: 110px; margin: 0 auto 24px; filter: drop-shadow(0 0 40px rgba(0,212,255,0.25)) drop-shadow(0 8px 24px rgba(0,0,0,0.4)); }
  .hero .logo-wrap svg { width: 100%; height: 100%; }
  .eyebrow { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; color: var(--accent); border: 1px solid rgba(0,212,255,0.25); background: rgba(0,212,255,0.06); padding: 5px 14px; border-radius: 999px; margin-bottom: 16px; font-weight: 600; letter-spacing: 0.5px; }
  .eyebrow::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 8px var(--accent); animation: pulse 2s ease-in-out infinite; }
  @keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }
  .hero h1 { font-size: clamp(26px, 7vw, 32px); line-height: 1.25; font-weight: 900; margin-bottom: 14px; color: var(--text-bright); letter-spacing: -0.5px; }
  .hero h1 span { background: linear-gradient(135deg, var(--accent), var(--coral)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
  .hero p { color: var(--text-dim); font-size: 15px; margin-bottom: 28px; max-width: 360px; margin-left: auto; margin-right: auto; }

  /* Score cards */
  .score { display: flex; justify-content: center; gap: 10px; margin-bottom: 28px; }
  .score div { background: var(--glass); border: 1px solid var(--border); border-radius: 16px; padding: 14px 10px; flex: 1; backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); text-align: center; transition: transform .2s, border-color .2s; }
  .score div:hover { transform: translateY(-2px); border-color: var(--border-hover); }
  .score b { display: block; font-size: 22px; color: var(--text-bright); font-weight: 900; }
  .score small { color: var(--text-dim); font-size: 11px; }
  .score div:first-child b { background: linear-gradient(135deg, var(--accent), var(--coral)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }

  /* Buttons */
  .store-row { display: grid; gap: 10px; max-width: 380px; margin: 0 auto; }
  .btn { display: block; width: 100%; text-align: center; background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: var(--bg); font-weight: 800; font-size: 16px; padding: 16px; border-radius: 14px; transition: transform .15s, box-shadow .15s; box-shadow: 0 8px 28px rgba(0,212,255,0.25); border: none; cursor: pointer; }
  .btn:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(0,212,255,0.35); }
  .btn:active { transform: scale(0.98); }
  .btn-play { background: transparent; color: var(--text-bright); border: 1.5px solid var(--border); box-shadow: none; font-weight: 700; }
  .btn-play:hover { border-color: var(--accent); background: rgba(0,212,255,0.05); box-shadow: 0 4px 16px rgba(0,212,255,0.1); }
  .note-ok { font-size: 13px; color: var(--text-dim); margin-top: 14px; text-align: center; }
  .note-ok::before { content: "✓ "; color: var(--accent); font-weight: 700; }

  /* Section titles */
  h2 { font-size: 24px; font-weight: 900; color: var(--text-bright); margin-bottom: 8px; text-align: center; letter-spacing: -0.3px; line-height: 1.3; }
  .sub { text-align: center; color: var(--text-dim); font-size: 14px; margin-bottom: 24px; max-width: 400px; margin-left: auto; margin-right: auto; }

  /* Trust grid */
  .x-trust { padding-top: 8px; padding-bottom: 12px; }
  .x-trust-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .x-trust-grid div { text-align: center; padding: 18px 12px; border-radius: 18px; background: var(--glass); border: 1px solid var(--border); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); transition: transform .2s, border-color .2s; }
  .x-trust-grid div:hover { transform: translateY(-2px); border-color: var(--border-hover); }
  .x-trust-grid b { display: block; font-size: 26px; font-weight: 900; line-height: 1.2; background: linear-gradient(135deg, var(--accent), var(--coral)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
  .x-trust-grid span { display: block; margin-top: 4px; font-size: 12px; color: var(--text-dim); line-height: 1.4; }

  /* Chapters nav */
  .x-chapters { position: relative; padding: 6px 0 8px; }
  .x-chapters-row { direction: ltr; display: flex; gap: 8px; overflow-x: auto; padding: 4px 22px 10px; scrollbar-width: none; scroll-snap-type: x proximity; -webkit-mask-image: linear-gradient(90deg, transparent, #000 20px, #000 calc(100% - 20px), transparent); mask-image: linear-gradient(90deg, transparent, #000 20px, #000 calc(100% - 20px), transparent); }
  .x-chapters-row::-webkit-scrollbar { display: none; }
  .x-chapters button { flex: none; scroll-snap-align: start; display: inline-flex; align-items: center; gap: 7px; max-width: 220px; padding: 8px 14px 8px 8px; border-radius: 999px; border: 1px solid var(--border); background: var(--glass); color: var(--text); font: inherit; font-size: 13px; font-weight: 600; cursor: pointer; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; transition: all .2s; backdrop-filter: blur(10px); }
  .x-chapters button em { font-style: normal; flex: none; display: grid; place-items: center; width: 24px; height: 24px; border-radius: 50%; font-size: 11px; font-weight: 800; color: var(--bg); background: linear-gradient(135deg, var(--accent), var(--accent-2)); }
  .x-chapters button.on, .x-chapters button:hover { border-color: var(--accent); background: rgba(0,212,255,0.08); color: var(--text-bright); }

  /* Videos */
  .x-videos { display: grid; gap: 14px; }
  .x-video { border-radius: 20px; overflow: hidden; border: 1px solid var(--border); background: var(--bg-light); transition: transform .25s, border-color .25s, box-shadow .25s; }
  .x-video:hover { transform: translateY(-3px); border-color: var(--border-hover); box-shadow: 0 20px 48px rgba(0,0,0,0.4), 0 0 0 1px rgba(0,212,255,0.1); }
  .x-video .frame { position: relative; width: 100%; padding-top: 56.25%; background: linear-gradient(135deg, #0f172a, #1e293b); cursor: pointer; display: block; overflow: hidden; }
  .x-video .frame::before { content: ''; position: absolute; inset: 0; background: radial-gradient(circle at 50% 50%, rgba(0,212,255,0.08), transparent 70%); }
  .x-video .frame::after { content: "▶"; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 60px; height: 60px; border-radius: 50%; background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: var(--bg); font-size: 20px; display: grid; place-items: center; box-shadow: 0 8px 28px rgba(0,212,255,0.35); transition: transform .2s, box-shadow .2s; z-index: 2; }
  .x-video .frame:hover::after { transform: translate(-50%, -50%) scale(1.1); box-shadow: 0 12px 36px rgba(0,212,255,0.45); }
  .x-video .frame .play-label { position: absolute; bottom: 12px; left: 50%; transform: translateX(-50%); font-size: 11px; color: var(--text-dim); background: rgba(0,0,0,0.5); padding: 4px 12px; border-radius: 999px; backdrop-filter: blur(8px); z-index: 2; }
  .x-video figcaption { padding: 16px 18px 18px; }
  .x-video h3 { color: var(--text-bright); font-size: 16px; margin-bottom: 4px; font-weight: 700; }
  .x-video p { color: var(--text-dim); font-size: 13.5px; line-height: 1.6; }

  /* Feature list */
  .list { display: grid; gap: 12px; }
  .item { display: flex; gap: 14px; align-items: flex-start; background: var(--glass); border: 1px solid var(--border); border-radius: 16px; padding: 18px; backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); transition: transform .2s, border-color .2s; }
  .item:hover { transform: translateY(-2px); border-color: var(--border-hover); }
  .item h3 { font-size: 16px; color: var(--text-bright); margin-bottom: 3px; font-weight: 700; }
  .item p { color: var(--text-dim); font-size: 14px; }
  .icon { flex: none; width: 46px; height: 46px; border-radius: 14px; background: linear-gradient(135deg, rgba(0,212,255,0.12), rgba(255,107,74,0.08)); display: grid; place-items: center; font-size: 22px; box-shadow: inset 0 0 0 1px rgba(0,212,255,0.15); }

  /* Tiles grid */
  .grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
  .tile { background: var(--glass); border: 1px solid var(--border); border-radius: 16px; padding: 18px 14px; text-align: center; backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); transition: transform .2s, border-color .2s; cursor: pointer; }
  .tile:hover { transform: translateY(-2px); border-color: var(--border-hover); }
  .tile .icon { margin: 0 auto 10px; }
  .tile h3 { font-size: 15px; color: var(--text-bright); font-weight: 700; }
  .tile p { font-size: 12px; color: var(--text-dim); }

  /* Flow steps */
  .x-flow { display: grid; gap: 12px; }
  .x-node { position: relative; padding-block: 20px; padding-inline: 68px 18px; border-radius: 18px; background: var(--glass); border: 1px solid var(--border); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); transition: transform .2s, border-color .2s; }
  .x-node:hover { transform: translateY(-2px); border-color: var(--border-hover); }
  .x-node i { position: absolute; inset-inline-start: 18px; top: 20px; width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center; font-style: normal; font-size: 18px; font-weight: 800; color: var(--accent); background: linear-gradient(135deg, rgba(0,212,255,0.12), rgba(255,107,74,0.08)); box-shadow: inset 0 0 0 1px rgba(0,212,255,0.15); }
  .x-node h3 { color: var(--text-bright); font-size: 15.5px; margin-bottom: 4px; font-weight: 700; }
  .x-node p { color: var(--text-dim); font-size: 13.5px; line-height: 1.65; }

  /* Cards grid */
  .x-grid { display: grid; gap: 12px; grid-template-columns: 1fr; }
  .x-card { position: relative; overflow: hidden; padding: 20px; border-radius: 18px; background: var(--glass); border: 1px solid var(--border); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); transition: transform .25s, border-color .25s, box-shadow .25s; }
  .x-card:hover { transform: translateY(-3px); border-color: var(--border-hover); box-shadow: 0 16px 40px rgba(0,0,0,0.35), 0 0 0 1px rgba(0,212,255,0.08); }
  .x-card::before { content: ""; position: absolute; left: 20px; right: 20px; top: 0; height: 1px; background: linear-gradient(90deg, transparent, rgba(0,212,255,0.5), transparent); }
  .x-card h3 { color: var(--text-bright); font-size: 15.5px; margin-bottom: 6px; font-weight: 700; }
  .x-card p { color: var(--text-dim); font-size: 13.5px; line-height: 1.65; }
  .x-ic { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 14px; font-size: 22px; margin-bottom: 12px; background: linear-gradient(135deg, rgba(0,212,255,0.12), rgba(255,107,74,0.08)); box-shadow: inset 0 0 0 1px rgba(0,212,255,0.15); }

  /* Gallery */
  .shots { padding-left: 0; padding-right: 0; }
  .gallery { direction: ltr; display: flex; gap: 14px; overflow-x: auto; scroll-snap-type: x mandatory; padding: 4px 22px 10px; scrollbar-width: none; cursor: grab; touch-action: pan-x pan-y; }
  .gallery::-webkit-scrollbar { display: none; }
  .gallery.dragging { cursor: grabbing; scroll-snap-type: none; }
  .gallery .screen { flex: none; width: 58%; aspect-ratio: 230 / 498; border-radius: 20px; scroll-snap-align: center; box-shadow: 0 12px 32px rgba(0,0,0,0.5); user-select: none; overflow: hidden; position: relative; background: linear-gradient(180deg, #0f172a, #1e293b); border: 1px solid var(--border); }
  .dots { direction: ltr; display: flex; justify-content: center; gap: 6px; margin-top: 16px; }
  .dots button { border: none; background: none; padding: 6px 3px; cursor: pointer; }
  .dots button i { display: block; width: 6px; height: 6px; border-radius: 6px; background: rgba(255,255,255,0.2); transition: .25s; }
  .dots button.on i { width: 20px; background: linear-gradient(90deg, var(--accent), var(--accent-2)); }

  /* Devices */
  .x-devices { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
  .x-devices span { padding: 10px 16px; border-radius: 999px; font-size: 13px; font-weight: 600; color: var(--text); background: var(--glass); border: 1px solid var(--border); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); transition: all .2s; }
  .x-devices span:hover { border-color: var(--accent); color: var(--accent); }

  /* Flags */
  .flags { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
  .flags span { background: var(--glass); border: 1px solid var(--border); padding: 8px 14px; border-radius: 999px; font-size: 13px; font-weight: 600; color: var(--text); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); transition: all .2s; }
  .flags span:hover { border-color: var(--accent); color: var(--accent); }

  /* Steps */
  .steps { counter-reset: s; display: grid; gap: 12px; }
  .step { position: relative; padding-block: 16px; padding-inline: 64px 18px; background: var(--glass); border: 1px solid var(--border); border-radius: 16px; backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); transition: transform .2s, border-color .2s; }
  .step:hover { transform: translateY(-2px); border-color: var(--border-hover); }
  .step::before { counter-increment: s; content: counter(s); position: absolute; inset-inline-start: 18px; top: 50%; transform: translateY(-50%); width: 32px; height: 32px; border-radius: 50%; background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: var(--bg); font-weight: 900; display: grid; place-items: center; font-size: 14px; box-shadow: 0 4px 12px rgba(0,212,255,0.25); }
  .step h3 { font-size: 15px; color: var(--text-bright); font-weight: 700; }
  .step p { font-size: 13px; color: var(--text-dim); }

  /* Pros & Cons */
  .pros-cons { display: grid; gap: 12px; }
  .box { border-radius: 16px; padding: 18px; border: 1px solid var(--border); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); }
  .box h3 { font-size: 15px; margin-bottom: 10px; color: var(--text-bright); font-weight: 700; }
  .box li { list-style: none; font-size: 14px; padding-block: 4px; padding-inline: 24px 0; position: relative; color: var(--text); }
  .pros { background: linear-gradient(180deg, rgba(0,212,255,0.06), rgba(10,15,26,0.5)); border-color: rgba(0,212,255,0.15); }
  .pros h3 { color: var(--accent); }
  .pros li::before { content: "✓"; position: absolute; inset-inline-start: 0; color: var(--accent); font-weight: 800; }
  .cons { background: linear-gradient(180deg, rgba(255,107,74,0.04), rgba(10,15,26,0.5)); border-color: rgba(255,107,74,0.1); }
  .cons h3 { color: var(--coral); }
  .cons li::before { content: "—"; position: absolute; inset-inline-start: 4px; color: var(--coral); font-weight: 800; }

  /* Table */
  .x-table-wrap { overflow-x: auto; border-radius: 18px; background: var(--glass); border: 1px solid var(--border); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); }
  .x-table-wrap table { width: 100%; border-collapse: collapse; font-size: 13px; }
  .x-table-wrap th, .x-table-wrap td { padding: 12px 10px; text-align: center; border-bottom: 1px solid rgba(255,255,255,0.04); }
  .x-table-wrap tr:last-child td { border-bottom: none; }
  .x-table-wrap th:first-child, .x-table-wrap td:first-child { text-align: start; color: var(--text); padding-inline-start: 16px; }
  .x-table-wrap thead th { color: var(--text-bright); font-size: 12.5px; background: rgba(255,255,255,0.02); font-weight: 700; }
  .x-table-wrap .x-hl { background: rgba(0,212,255,0.06); color: var(--text-bright); }
  .x-table-wrap .y { color: var(--accent); font-weight: 900; font-size: 15px; }
  .x-table-wrap .n { color: var(--danger); font-weight: 900; font-size: 15px; }
  .x-table-wrap .m { color: var(--warn); font-weight: 900; font-size: 15px; }
  .x-legend { font-size: 12px; color: var(--text-dim); text-align: center; margin-top: 12px; }

  /* Tips */
  .x-tips { counter-reset: tip; display: grid; gap: 10px; }
  .x-tips li { list-style: none; position: relative; padding-block: 16px; padding-inline: 56px 18px; border-radius: 16px; color: var(--text); font-size: 14px; line-height: 1.6; background: var(--glass); border: 1px solid var(--border); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); transition: transform .2s, border-color .2s; }
  .x-tips li:hover { transform: translateY(-2px); border-color: var(--border-hover); }
  .x-tips li::before { counter-increment: tip; content: counter(tip, decimal-leading-zero); position: absolute; inset-inline-start: 18px; top: 16px; font-weight: 900; color: var(--accent); font-size: 13px; }

  /* Glossary */
  .x-gloss { display: grid; gap: 10px; }
  .x-term { padding: 18px; border-radius: 16px; background: var(--glass); border: 1px solid var(--border); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); transition: transform .2s, border-color .2s; }
  .x-term:hover { transform: translateY(-2px); border-color: var(--border-hover); }
  .x-term h3 { color: var(--accent); font-size: 15px; margin-bottom: 4px; font-weight: 700; }
  .x-term p { color: var(--text-dim); font-size: 13.5px; line-height: 1.6; }

  /* FAQ */
  .faq-item { border-radius: 16px; padding: 0 18px; margin-bottom: 10px; background: var(--glass); border: 1px solid var(--border); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); transition: border-color .2s; }
  .faq-item:hover { border-color: var(--border-hover); }
  .faq-q { width: 100%; text-align: start; background: none; border: none; padding: 18px 0; font-size: 15px; font-weight: 700; color: var(--text-bright); display: flex; justify-content: space-between; gap: 12px; font-family: inherit; cursor: pointer; align-items: center; }
  .faq-q::after { content: "+"; color: var(--accent); font-size: 22px; line-height: 1; transition: .25s; font-weight: 300; }
  .faq-item.open .faq-q::after { transform: rotate(45deg); }
  .faq-a { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
  .faq-a p { padding-bottom: 18px; color: var(--text-dim); font-size: 14px; line-height: 1.65; }

  /* Final CTA */
  .final { background: linear-gradient(180deg, transparent, rgba(0,212,255,0.04)); text-align: center; }
  .final h2 { margin-bottom: 10px; }
  .final p { color: var(--text-dim); margin-bottom: 22px; font-size: 15px; }
  .final .store-row { max-width: 380px; margin: 0 auto; }

  /* Footer */
  footer { background: rgba(6,10,18,0.8); color: var(--text-dim); font-size: 12px; padding: 20px 22px; text-align: center; border-top: 1px solid var(--border); }
  .foot-short { line-height: 1.6; }
  .copy { margin-top: 6px; }

  /* Sticky CTA */
  .sticky-cta { position: fixed; left: 50%; transform: translateX(-50%); bottom: calc(12px + env(safe-area-inset-bottom)); width: calc(100% - 28px); max-width: 520px; z-index: 30; background: linear-gradient(135deg, rgba(17,24,39,0.95), rgba(10,15,26,0.98)); backdrop-filter: blur(24px) saturate(160%); -webkit-backdrop-filter: blur(24px) saturate(160%); border: 1px solid var(--border); border-radius: 20px; padding: 10px 10px 10px 12px; display: flex; align-items: center; gap: 12px; box-shadow: 0 24px 48px rgba(0,0,0,0.5), 0 0 0 1px rgba(0,212,255,0.05); }
  .sticky-cta .logo-wrap { width: 42px; height: 42px; flex: none; }
  .sticky-cta div { flex: 1; line-height: 1.3; min-width: 0; }
  .sticky-cta b { font-size: 15px; color: var(--text-bright); display: flex; align-items: center; gap: 8px; letter-spacing: -0.2px; font-weight: 800; }
  .sticky-cta small { display: block; font-size: 12px; color: var(--text-dim); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin-top: 2px; }
  .sticky-cta a { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: var(--bg); font-weight: 800; padding: 11px 20px; border-radius: 14px; font-size: 15px; white-space: nowrap; display: inline-flex; align-items: center; justify-content: center; min-width: 100px; height: 44px; box-shadow: 0 6px 20px rgba(0,212,255,0.25); transition: transform .15s, box-shadow .15s; }
  .sticky-cta a:hover { transform: translateY(-1px); box-shadow: 0 8px 24px rgba(0,212,255,0.35); }
  .sticky-stores { display: flex; gap: 6px; flex: none; }
  .sticky-rate { flex: none; font-size: 11px; font-weight: 800; color: var(--accent); padding: 3px 8px; border-radius: 999px; background: rgba(0,212,255,0.08); border: 1px solid rgba(0,212,255,0.2); }

  /* Reveal animation */
  .reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
  .reveal.in { opacity: 1; transform: none; }
  @media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }

  /* Section counter & dividers */
  .app { counter-reset: sec; }
  section:not(.final) > h2::before { counter-increment: sec; content: counter(sec, decimal-leading-zero); display: block; margin: 0 auto 8px; font-size: 11px; font-weight: 800; letter-spacing: 4px; color: var(--accent); opacity: .6; }
  section + section:not(.alt)::before { content: ""; position: absolute; top: 0; left: 50%; width: min(60%, 400px); height: 1px; transform: translateX(-50%); background: linear-gradient(90deg, transparent, rgba(0,212,255,0.12), transparent); }

  /* Scrollbar styling */
  ::-webkit-scrollbar { width: 4px; }
  ::-webkit-scrollbar-track { background: transparent; }
  ::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

  /* Touch feedback */
  .score > div, .item, .tile, .flags span, .step, .box, .hero-logo, .brand, .x-node, .x-card, .x-term, .x-tips li { cursor: pointer; }
  .score > div:active, .item:active, .tile:active, .flags span:active, .step:active, .box:active { transform: scale(0.98); }

  @media (min-width: 560px) {
    .x-grid.x-u { grid-template-columns: 1fr 1fr; }
    .x-flow { grid-template-columns: 1fr 1fr; }
    .x-gloss { grid-template-columns: 1fr 1fr; }
    .gallery .screen { width: 200px; }
  }
  @media (min-width: 768px) {
    .app, .sticky-cta { max-width: 1160px; box-shadow: none; }
    section { padding: 56px 48px; }
    .hero { padding: 68px 56px 56px; }
    .hero h1 { font-size: 44px; }
    .hero p { font-size: 17px; max-width: 500px; }
    .hero .logo-wrap { width: 130px; height: 130px; }
    .score { max-width: 480px; margin-left: auto; margin-right: auto; }
    .store-row, .final .store-row { max-width: 480px; margin-left: auto; margin-right: auto; }
    .list, .pros-cons { grid-template-columns: 1fr 1fr; }
    .grid2 { grid-template-columns: repeat(4, 1fr); }
    .steps { grid-template-columns: repeat(3, 1fr); }
    .lang { max-width: 140px; }
    h2 { font-size: 30px; }
    .x-trust-grid { grid-template-columns: repeat(4, 1fr); }
    .x-grid.x-3, .x-grid.x-u { grid-template-columns: repeat(3, 1fr); }
    .x-tips { grid-template-columns: 1fr 1fr; }
    .x-videos { grid-template-columns: 1fr 1fr; }
    .x-table-wrap table { font-size: 14px; }
    .x-chapters-row { justify-content: center; flex-wrap: wrap; -webkit-mask-image: none; mask-image: none; padding: 4px 48px 10px; }
  }
  @media (max-width: 480px) {
    header { padding: 10px 14px; gap: 8px; }
    .brand { gap: 8px; font-size: 15px; }
    .brand .logo-wrap { width: 32px; height: 32px; }
    .head-right { gap: 6px; }
    .lang { max-width: 80px; padding: 5px 8px; font-size: 12px; }
    .head-stores .mini { padding: 7px 12px; font-size: 12px; }
    .hero { padding: 32px 18px 36px; }
    .hero .logo-wrap { width: 90px; height: 90px; }
    .hero p { font-size: 14px; }
    .score { gap: 8px; }
    .score div { padding: 12px 6px; }
    .score b { font-size: 20px; }
    .score small { font-size: 11px; }
    section { padding: 32px 18px; }
    .sticky-cta { width: calc(100% - 20px); bottom: calc(10px + env(safe-area-inset-bottom)); padding: 9px 9px 9px 10px; border-radius: 18px; }
    .sticky-cta .logo-wrap { width: 38px; height: 38px; }
    .sticky-stores a, .sticky-cta a { min-width: 88px; height: 40px; padding: 0 16px; font-size: 14px; }
    .x-chapters-row { padding: 4px 18px 10px; }
  }
  @media (max-width: 360px) {
    .brand small { display: none; }
    .lang { max-width: 68px; }
    .sticky-cta small { display: none; }
    .sticky-rate { display: none; }
    .sticky-stores a, .sticky-cta a { min-width: 0; padding: 0 14px; }
  }

  /* ===== SPLASH / INTRO PAGE ===== */
  .splash-page { position: fixed; inset: 0; z-index: 9999; display: flex; flex-direction: column; align-items: center; justify-content: center; background: var(--bg); overflow: hidden; transition: opacity 1s ease, visibility 1s ease; }
  .splash-page.done { opacity: 0; visibility: hidden; pointer-events: none; }
  .splash-canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
  .splash-bg { position: absolute; inset: 0; background: radial-gradient(ellipse at 50% 50%, rgba(0,212,255,0.04) 0%, transparent 60%), radial-gradient(ellipse at 20% 80%, rgba(255,107,74,0.02) 0%, transparent 50%); }

  .splash-content { position: relative; z-index: 2; display: flex; flex-direction: column; align-items: center; text-align: center; padding: 40px 24px; width: 100%; max-width: 420px; }

  .splash-logo-wrap { width: 120px; height: 120px; margin-bottom: 32px; filter: drop-shadow(0 0 50px rgba(0,212,255,0.3)) drop-shadow(0 0 80px rgba(255,107,74,0.1)); animation: splashLogoIn 1.2s cubic-bezier(0.22, 1, 0.36, 1) forwards; opacity: 0; transform: scale(0.5); }
  @keyframes splashLogoIn { to { opacity: 1; transform: scale(1); } }
  .splash-logo-wrap svg { width: 100%; height: 100%; }
  .splash-logo-pulse { animation: splashLogoPulse 3s ease-in-out infinite 1.2s; }
  @keyframes splashLogoPulse { 0%,100% { filter: drop-shadow(0 0 50px rgba(0,212,255,0.3)); transform: scale(1); } 50% { filter: drop-shadow(0 0 70px rgba(0,212,255,0.45)); transform: scale(1.03); } }

  .splash-brand { font-size: 32px; font-weight: 900; color: var(--text-bright); letter-spacing: -1px; margin-bottom: 10px; min-height: 42px; }
  .splash-brand span { background: linear-gradient(135deg, var(--accent), var(--coral)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
  .splash-brand .cursor { display: inline-block; width: 3px; height: 32px; background: var(--accent); margin-left: 3px; animation: cursorBlink 0.8s step-end infinite; vertical-align: middle; border-radius: 2px; }
  @keyframes cursorBlink { 0%,100% { opacity: 1; } 50% { opacity: 0; } }
  .splash-sub { font-size: 14px; color: var(--text-dim); margin-bottom: 40px; min-height: 24px; opacity: 0; animation: fadeInUp 0.6s ease forwards 1.8s; }
  @keyframes fadeInUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }

  .splash-progress-wrap { width: 180px; height: 3px; background: rgba(255,255,255,0.06); border-radius: 3px; overflow: hidden; margin-bottom: 16px; opacity: 0; animation: fadeInUp 0.5s ease forwards 2.0s; }
  .splash-progress-bar { height: 100%; width: 0%; background: linear-gradient(90deg, var(--accent), var(--coral)); border-radius: 3px; transition: width 0.3s ease; box-shadow: 0 0 10px rgba(0,212,255,0.4); }
  .splash-progress-text { font-size: 11px; color: var(--text-dim); opacity: 0; animation: fadeInUp 0.5s ease forwards 2.0s; margin-bottom: 30px; }

  .splash-enter-btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 14px 36px; border-radius: 14px; background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: var(--bg); font-weight: 800; font-size: 15px; border: none; cursor: pointer; box-shadow: 0 8px 28px rgba(0,212,255,0.25); opacity: 0; transform: translateY(12px); transition: all 0.4s cubic-bezier(0.22, 1, 0.36, 1); }
  .splash-enter-btn.show { opacity: 1; transform: translateY(0); }
  .splash-enter-btn:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(0,212,255,0.35); }
  .splash-enter-btn:active { transform: scale(0.97); }
  .splash-enter-btn svg { width: 16px; height: 16px; }

  .splash-skip { position: absolute; top: 20px; right: 20px; z-index: 3; color: var(--text-dim); font-size: 12px; background: rgba(255,255,255,0.04); border: 1px solid var(--border); padding: 8px 16px; border-radius: 10px; cursor: pointer; transition: all 0.2s; opacity: 0; animation: fadeInUp 0.5s ease forwards 0.5s; }
  .splash-skip:hover { border-color: var(--accent); color: var(--accent); }

  .splash-tagline { position: absolute; bottom: 30px; left: 0; right: 0; text-align: center; font-size: 11px; color: rgba(148,163,184,0.4); letter-spacing: 2px; text-transform: uppercase; }

  @media (max-width: 480px) {
    .splash-logo-wrap { width: 100px; height: 100px; margin-bottom: 24px; }
    .splash-brand { font-size: 26px; }
    .splash-brand .cursor { height: 26px; }
    .splash-sub { font-size: 13px; }
  }