:root {
      --bg: #06111d;
      --bg-2: #0a1827;
      --panel: rgba(9, 22, 35, 0.9);
      --panel-strong: rgba(6, 14, 23, 0.96);
      --line: rgba(108, 231, 177, 0.2);
      --line-strong: rgba(108, 231, 177, 0.42);
      --text: #eef6ff;
      --muted: #9db5ca;
      --accent: #6ce7b1;
      --accent-2: #58c5ff;
      --accent-3: #ffca6e;
      --shadow: 0 28px 88px rgba(0, 0, 0, 0.38);
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }

    body {
      margin: 0;
      font-family: "Space Grotesk", sans-serif;
      color: var(--text);
      background:
        radial-gradient(circle at top left, rgba(108, 231, 177, 0.08), transparent 28%),
        radial-gradient(circle at top right, rgba(88, 197, 255, 0.12), transparent 24%),
        linear-gradient(180deg, #07111b 0%, var(--bg) 100%);
      line-height: 1.65;
    }

    .shell {
      width: min(1200px, calc(100% - 28px));
      margin: 0 auto;
      padding-bottom: 48px;
    }

    header,
    section,
    footer {
      position: relative;
    }

    header {
      margin-top: 18px;
      padding: 14px 18px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
      background: rgba(4, 10, 18, 0.72);
      border: 1px solid var(--line);
      border-radius: 20px;
      backdrop-filter: blur(18px);
      box-shadow: var(--shadow);
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 14px;
      text-decoration: none;
      color: var(--text);
    }

    .brand img {
      width: 52px;
      height: 52px;
      border-radius: 16px;
      border: 1px solid var(--line-strong);
      object-fit: cover;
      background: linear-gradient(145deg, rgba(108, 231, 177, 0.12), rgba(88, 197, 255, 0.16));
    }

    .brand h1 {
      margin: 0;
      font-family: "Orbitron", sans-serif;
      font-size: clamp(1rem, 2vw, 1.2rem);
      letter-spacing: 0.08em;
    }

    .brand p {
      margin: 2px 0 0;
      color: var(--muted);
      font-size: 0.88rem;
    }

    nav {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      justify-content: flex-end;
    }

    nav a,
    .chip-link {
      color: var(--accent-2);
      text-decoration: none;
      font-weight: 600;
      font-size: 0.95rem;
    }

    .hero {
      display: grid;
      grid-template-columns: 1.05fr 0.95fr;
      gap: 24px;
      min-height: calc(100vh - 126px);
      align-items: stretch;
      padding: 40px 0 28px;
    }

    .hero-copy,
    .hero-side,
    .section-card,
    .role-card,
    .stack-card,
    .rule-card {
      background: var(--panel);
      border: 1px solid var(--line);
      border-radius: 24px;
      backdrop-filter: blur(18px);
      box-shadow: var(--shadow);
    }

    .hero-copy,
    .hero-side,
    .section-card {
      padding: 28px;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 8px 12px;
      border-radius: 999px;
      border: 1px solid var(--line);
      background: rgba(255,255,255,0.04);
      color: var(--accent);
      font-size: 0.82rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.04em;
    }

    h2,
    h3 {
      font-family: "Orbitron", sans-serif;
      line-height: 1.08;
      margin: 0;
    }

    .hero h2 {
      margin-top: 18px;
      font-size: clamp(2.2rem, 6vw, 4.6rem);
    }

    .hero p,
    .section-copy,
    .rule-card p,
    .stack-card p,
    .role-card p {
      color: var(--muted);
    }

    .hero-actions,
    .chip-row,
    .footer-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .btn,
    .btn-secondary,
    .chip-link {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      border-radius: 999px;
      padding: 12px 18px;
      border: 1px solid var(--line);
      background: rgba(255,255,255,0.04);
    }

    .btn {
      background: linear-gradient(135deg, var(--accent), var(--accent-2));
      color: #031018;
      border-color: transparent;
      font-weight: 700;
    }

    .btn-secondary,
    .chip-link {
      color: var(--text);
    }

    .hero-side {
      display: grid;
      gap: 14px;
      align-content: start;
    }

    .stack-grid,
    .rules-grid,
    .roles-grid {
      display: grid;
      gap: 14px;
    }

    .stack-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .rules-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .roles-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }

    .stack-card,
    .rule-card,
    .role-card {
      padding: 18px;
    }

    .section {
      margin-top: 18px;
    }

    .section-head {
      display: flex;
      justify-content: space-between;
      align-items: end;
      gap: 16px;
      margin-bottom: 18px;
    }

    .legend {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 14px;
    }

    .legend span {
      padding: 8px 10px;
      border-radius: 999px;
      border: 1px solid var(--line);
      background: rgba(255,255,255,0.04);
      color: var(--muted);
      font-size: 0.82rem;
    }

    footer {
      margin: 28px 0 20px;
      text-align: center;
      color: var(--muted);
    }

    @media (max-width: 980px) {
      .hero,
      .rules-grid,
      .roles-grid,
      .stack-grid {
        grid-template-columns: 1fr;
      }
    }