:root {
      --bg0: #05070c;
      --bg1: #0b101c;
      --line: rgba(255, 214, 120, 0.14);
      --red: #e63946;
      --red-hot: #ff2d3a;
      --gold: #ffd56a;
      --gold-2: #f0a830;
      --text: #f4f1ea;
      --muted: rgba(244, 241, 234, 0.62);
      --glow: 0 0 40px rgba(230, 57, 70, 0.35);
      --safe-b: env(safe-area-inset-bottom, 0px);
      --safe-r: env(safe-area-inset-right, 0px);
      --safe-t: env(safe-area-inset-top, 0px);
    }

    * { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
      min-height: 100vh;
      min-height: 100dvh;
      color: var(--text);
      background: var(--bg0);
      font-family: "Noto Sans SC", "PingFang SC", sans-serif;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; }
    img { display: block; max-width: 100%; }

    .fx-grid {
      position: fixed;
      inset: 0;
      pointer-events: none;
      z-index: 0;
      background:
        radial-gradient(900px 480px at 80% -10%, rgba(230, 57, 70, 0.28), transparent 55%),
        radial-gradient(700px 420px at 10% 30%, rgba(240, 168, 48, 0.12), transparent 50%),
        radial-gradient(600px 500px at 50% 110%, rgba(230, 57, 70, 0.16), transparent 55%),
        linear-gradient(180deg, #070a12 0%, #05070c 55%, #090d18 100%);
    }
    .fx-grid::before {
      content: "";
      position: absolute;
      inset: 0;
      opacity: 0.22;
      background-image:
        linear-gradient(var(--line) 1px, transparent 1px),
        linear-gradient(90deg, var(--line) 1px, transparent 1px);
      background-size: 48px 48px;
      mask-image: radial-gradient(ellipse at center, #000 25%, transparent 75%);
      animation: gridDrift 28s linear infinite;
    }
    .fx-scan {
      position: fixed;
      left: 0; right: 0;
      height: 120px;
      top: -120px;
      z-index: 1;
      pointer-events: none;
      background: linear-gradient(180deg, transparent, rgba(255, 213, 106, 0.06), transparent);
      animation: scan 7.5s ease-in-out infinite;
    }
    @keyframes gridDrift {
      from { transform: translateY(0); }
      to { transform: translateY(48px); }
    }
    @keyframes scan {
      0% { top: -10%; opacity: 0; }
      15% { opacity: 1; }
      85% { opacity: 1; }
      100% { top: 110%; opacity: 0; }
    }
    @keyframes floatY {
      0%, 100% { transform: translateY(0); }
      50% { transform: translateY(-10px); }
    }
    @keyframes pulseGlow {
      0%, 100% { filter: drop-shadow(0 0 18px rgba(230, 57, 70, 0.35)); }
      50% { filter: drop-shadow(0 0 28px rgba(255, 213, 106, 0.45)); }
    }

    .shell {
      position: relative;
      z-index: 2;
      width: min(100%, 520px);
      margin: 0 auto;
      padding: calc(18px + var(--safe-t)) 20px calc(28px + var(--safe-b));
    }

    /* —— Hero: one composition —— */
    .hero {
      /*min-height: calc(100vh - 40px);*/
      /*min-height: calc(100dvh - 40px);*/
      display: flex;
      flex-direction: column;

      gap: 18px;
      padding-top: 8px;
    }
    .brand-row {
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .brand-mark {
      width: 36px;
      height: 36px;
      border-radius: 10px;
      object-fit: cover;
      box-shadow: var(--glow);
    }
    .brand-name {
      font-family: Orbitron, "Noto Sans SC", sans-serif;
      font-weight: 700;
      font-size: 22px;
      letter-spacing: 0.08em;
      background: linear-gradient(90deg, #fff 0%, var(--gold) 55%, var(--red-hot) 100%);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }
    .brand-chip {
      margin-left: auto;
      font-size: 11px;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: var(--gold);
      border: 1px solid rgba(255, 213, 106, 0.35);
      padding: 4px 8px;
      border-radius: 999px;
      background: rgba(255, 213, 106, 0.06);
    }

    .hero-visual {
      position: relative;
      margin: 0px -8px 0;
      isolation: isolate;
    }
    .hero-visual::before {
      content: "";
      position: absolute;
      inset: 12% 8% 8%;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(230, 57, 70, 0.45), transparent 68%);
      filter: blur(18px);
      z-index: -1;
      animation: pulseGlow 4.5s ease-in-out infinite;
    }
    .hero-visual img {
      width: 100%;
      height: auto;
      margin: 0 auto;
      animation: floatY 5.5s ease-in-out infinite;
      filter: drop-shadow(0 18px 30px rgba(0, 0, 0, 0.55));
    }

    .hero h1 {
      font-size: clamp(28px, 7.2vw, 36px);
      font-weight: 900;
      line-height: 1.2;
      letter-spacing: 0.02em;
          text-align: center;
    }
    .hero h1 span {
      display: inline-block;
      background: linear-gradient(105deg, var(--gold) 0%, #fff 40%, var(--red-hot) 100%);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }
    .hero-lead {
      color: var(--muted);
      font-size: 14px;
      line-height: 1.65;
      max-width: 34em;
    }

    .cta-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 10px;
      margin-top: 6px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 48px;
      padding: 0 16px;
      border-radius: 14px;
      font-weight: 800;
      font-size: 15px;
      border: 1px solid transparent;
      cursor: pointer;
      transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
      user-select: none;
      -webkit-tap-highlight-color: transparent;
    }
    .btn:active { transform: translateY(1px) scale(0.99); }
    .btn-primary {
      color: #1a0a0c;
      background: linear-gradient(135deg, #ffe082 0%, var(--gold-2) 45%, #ff6b4a 100%);
      box-shadow: 0 10px 28px rgba(240, 168, 48, 0.28), inset 0 1px 0 rgba(255, 255, 255, 0.35);
    }
    .btn-ghost {
      color: var(--text);
      background: rgba(255, 255, 255, 0.04);
      border-color: rgba(255, 213, 106, 0.28);
      backdrop-filter: blur(8px);
    }
    .btn-ghost:hover { background: rgba(255, 255, 255, 0.08); }

    /* —— Sections —— */
    .panel {
      margin-top: 36px;
      padding-top: 28px;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
    }
    .panel-kicker {
      font-family: Orbitron, sans-serif;
      font-size: 11px;
      letter-spacing: 0.18em;
      color: var(--gold);
      margin-bottom: 8px;
    }
    .panel h2 {
      font-size: 22px;
      font-weight: 900;
      margin-bottom: 8px;
    }
    .panel p {
      color: var(--muted);
      font-size: 13.5px;
      line-height: 1.7;
    }

    .rail {
      margin-top: 18px;
      display: grid;
      gap: 12px;
    }
    .rail-item {
      position: relative;
      padding: 16px 16px 16px 18px;
      border-radius: 16px;
      background: linear-gradient(135deg, rgba(255, 255, 255, 0.04), rgba(230, 57, 70, 0.06));
      border: 1px solid rgba(255, 255, 255, 0.07);
      overflow: hidden;
    }
    .rail-item::before {
      content: "";
      position: absolute;
      left: 0; top: 12px; bottom: 12px;
      width: 3px;
      border-radius: 3px;
      background: linear-gradient(180deg, var(--gold), var(--red));
    }
    .rail-item strong {
      display: block;
      font-size: 15px;
      margin-bottom: 4px;
    }
    .rail-item span {
      color: var(--muted);
      font-size: 12.5px;
      line-height: 1.55;
    }

    .foot {
      margin-top: 40px;
      text-align: center;
      color: rgba(244, 241, 234, 0.38);
      font-size: 11px;
      line-height: 1.6;
    }

    /* Floating CS */
    .cs-float {
      position: fixed;
      right: max(10px, var(--safe-r));
      top: 25%;
      z-index: 50;
      width: 58px;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 2px;
      background: transparent;
      border: 0;
      cursor: pointer;
      -webkit-tap-highlight-color: transparent;
      animation: floatY 4.8s ease-in-out infinite;
    }
    .cs-float-img {
      width: 52px;
      height: 52px;
      background-repeat: no-repeat;
      background-position: center;
      background-size: contain;
      background-color: transparent;
    }
    .cs-float-img img {
      width: 100%;
      height: 100%;
      object-fit: contain;
    }
    .cs-float-label {
      font-size: 11px;
      font-weight: 800;
      color: var(--red-hot);
      text-shadow: 0 1px 0 rgba(0, 0, 0, 0.55);
    }

    @media (min-width: 720px) {
      .shell { width: 560px; padding-top: 40px; }
      .cta-row { max-width: 420px; }
    }