:root {
      --bg: #080a0f;
      --panel: rgba(255, 255, 255, 0.07);
      --panel-strong: rgba(255, 255, 255, 0.11);
      --text: #f4f7fb;
      --muted: #aeb8c7;
      --accent: #7ce7c8;
      --accent-2: #9ab7ff;
      --line: rgba(255, 255, 255, 0.14);
      --shadow: rgba(0, 0, 0, 0.35);
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      min-height: 100vh;
      font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      color: var(--text);
      background:
        radial-gradient(circle at 15% 20%, rgba(124, 231, 200, 0.16), transparent 30%),
        radial-gradient(circle at 80% 10%, rgba(154, 183, 255, 0.18), transparent 26%),
        radial-gradient(circle at 70% 80%, rgba(124, 231, 200, 0.08), transparent 28%),
        linear-gradient(135deg, #080a0f 0%, #111827 55%, #080a0f 100%);
      overflow-x: hidden;
    }

    body::before {
      content: "";
      position: fixed;
      inset: 0;
      pointer-events: none;
      background-image:
        linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
      background-size: 44px 44px;
      mask-image: linear-gradient(to bottom, rgba(0,0,0,0.8), transparent 85%);
    }

    .shell {
      width: min(1120px, calc(100% - 40px));
      margin: 0 auto;
      position: relative;
      z-index: 1;
    }

    header {
      padding: 28px 0;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 20px;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 12px;
      text-decoration: none;
      color: var(--text);
      font-weight: 800;
      letter-spacing: -0.04em;
    }

    .mark {
      width: 38px;
      height: 38px;
      border: 1px solid var(--line);
      border-radius: 12px;
      display: grid;
      place-items: center;
      background: linear-gradient(135deg, var(--panel-strong), rgba(124, 231, 200, 0.16));
      box-shadow: 0 18px 60px var(--shadow);
    }

    nav {
      display: flex;
      gap: 18px;
      flex-wrap: wrap;
    }

    nav a {
      color: var(--muted);
      text-decoration: none;
      font-size: 0.95rem;
    }

    nav a:hover {
      color: var(--text);
    }

    .hero {
      padding: 72px 0 50px;
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 48px;
      align-items: center;
    }

    .kicker {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 8px 12px;
      border: 1px solid var(--line);
      border-radius: 999px;
      background: var(--panel);
      color: var(--accent);
      font-weight: 700;
      font-size: 0.9rem;
      margin-bottom: 24px;
    }

    h1 {
      margin: 0;
      font-size: clamp(3rem, 8vw, 7.5rem);
      line-height: 0.86;
      letter-spacing: -0.04em;
    }

    h1 span {
      display: block;
      color: transparent;
      background: linear-gradient(90deg, var(--accent), var(--accent-2), #fff);
      -webkit-background-clip: text;
      background-clip: text;
    }

    .subtitle {
      margin: 28px 0 0;
      color: var(--muted);
      font-size: clamp(1.05rem, 2vw, 1.3rem);
      line-height: 1.7;
      max-width: 680px;
    }
    .accent-link {
      color: var(--accent);
    }

    .actions {
      display: flex;
      gap: 14px;
      flex-wrap: wrap;
      margin-top: 34px;
    }

    .button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 48px;
      padding: 0 18px;
      border-radius: 14px;
      text-decoration: none;
      font-weight: 750;
      border: 1px solid var(--line);
      color: var(--text);
      background: var(--panel);
      transition:
        background 180ms ease,
        color 180ms ease,
        border-color 180ms ease,
        transform 180ms ease,
        box-shadow 180ms ease;
    }

    .button:hover {
      color: #06110d;
      background: linear-gradient(135deg, var(--accent), #eafff7);
      border-color: rgba(124, 231, 200, 0.65);
      box-shadow: 0 14px 38px rgba(124, 231, 200, 0.18);
      transform: translateY(-2px);
    }

    .card {
      border: 1px solid var(--line);
      border-radius: 28px;
      background: linear-gradient(180deg, var(--panel-strong), rgba(255,255,255,0.045));
      box-shadow: 0 28px 90px var(--shadow);
      backdrop-filter: blur(18px);
    }

    .identity-card {
      padding: 26px;
    }

    .terminal-bar {
      display: flex;
      gap: 7px;
      margin-bottom: 22px;
    }

    .dot {
      width: 11px;
      height: 11px;
      border-radius: 999px;
      background: var(--line);
    }

    .dot:nth-child(1) { background: #ff6b6b; }
    .dot:nth-child(2) { background: #ffd166; }
    .dot:nth-child(3) { background: #7ce7c8; }

    .code {
      font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
      color: #d8fff4;
      font-size: 0.98rem;
      line-height: 1.9;
    }

    .code .muted {
      color: #7f8da3;
    }

    .code .accent {
      color: var(--accent);
    }

    section {
      padding: 42px 0;
    }

    .section-title {
      font-size: clamp(2rem, 4vw, 3.6rem);
      letter-spacing: -0.04em;
      margin: 0 0 14px;
    }

    .section-copy {
      color: var(--muted);
      line-height: 1.7;
      max-width: 760px;
      margin: 0 0 28px;
      font-size: 1.05rem;
    }

    .grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }

    .feature {
      padding: 24px;
      min-height: 190px;
    }

    .feature h3 {
      margin: 0 0 10px;
      font-size: 1.18rem;
    }

    .feature p {
      margin: 0;
      color: var(--muted);
      line-height: 1.65;
    }

    .tag {
      display: inline-block;
      margin-bottom: 18px;
      padding: 6px 10px;
      border-radius: 999px;
      background: rgba(124, 231, 200, 0.12);
      color: var(--accent);
      font-size: 0.78rem;
      font-weight: 800;
      letter-spacing: 0.08em;
      text-transform: uppercase;
    }

    .split {
      display: grid;
      grid-template-columns: 0.85fr 1.15fr;
      gap: 20px;
      align-items: stretch;
    }

    .definition {
      padding: 28px;
    }

    .definition strong {
      color: var(--accent);
    }

    .definition p {
      color: var(--muted);
      line-height: 1.75;
      margin: 0;
    }

    footer {
      padding: 60px 0 34px;
      color: var(--muted);
      display: flex;
      justify-content: space-between;
      gap: 20px;
      flex-wrap: wrap;
      border-top: 1px solid var(--line);
      margin-top: 32px;
    }

    footer a {
      color: var(--text);
      text-decoration: none;
    }

    @media (max-width: 820px) {
      header {
        align-items: flex-start;
        flex-direction: column;
      }

      .hero,
      .split {
        grid-template-columns: 1fr;
      }

      .grid {
        grid-template-columns: 1fr;
      }

      .hero {
        padding-top: 38px;
      }
    }