:root {
      --page: #101010;
      --surface: #1c1c1c;
      --surface-light: #282828;
      --border: #454545;
      --text: #ffc000;
      --muted: #bdbdbd;
    }

    * { box-sizing: border-box; }

    html { scroll-behavior: smooth; }

    body {
      margin: 0;
      min-height: 100vh;
      background: var(--page);
      color: var(--text);
      font-family: "Lucida Console", Monaco, monospace;
      display: flex;
      flex-direction: column;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 10;
      background: rgba(16, 16, 16, 0.97);
      border-bottom: 1px solid var(--border);
    }

    .nav-inner {
      max-width: 1120px;
      margin: auto;
      display: flex;
      align-items: center;
      min-height: 62px;
      padding: 0 24px;
    }

    .logo {
      color: var(--text);
      font-weight: bold;
      font-size: 1.3rem;
      letter-spacing: 0.15em;
      text-decoration: none;
    }

    .nav-links { margin-left: auto; }

    .nav-link, .menu-button, .footer-link {
      color: var(--text);
      text-decoration: none;
      letter-spacing: 0.04em;
    }

    .nav-link {
      display: inline-block;
      padding: 20px 14px;
    }

    .nav-link:hover, .footer-link:hover, .menu-button:hover {
      background: var(--surface-light);
      color: #fff;
    }

    .menu-button {
      display: none;
      margin-left: auto;
      background: transparent;
      border: 0;
      cursor: pointer;
      font: inherit;
      font-size: 1.4rem;
      padding: 12px;
    }

    .mobile-menu {
      display: none;
      border-top: 1px solid var(--border);
      background: var(--surface);
    }

    .mobile-menu.is-open { display: block; }

    .mobile-menu .nav-link {
      display: block;
      padding: 16px 24px;
    }

    main {
      width: 100%;
      max-width: 1120px;
      margin: 0 auto;
      padding: 72px 24px;
      flex: 1;
    }

    .content-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 4px;
      padding: clamp(24px, 5vw, 56px);
      box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
    }

    h1 {
      margin: 0 0 28px;
      font-size: clamp(1.8rem, 5vw, 3rem);
      letter-spacing: 0.08em;
    }

    p {
      margin: 0;
      color: var(--muted);
      font-size: clamp(0.9rem, 2vw, 1rem);
      line-height: 1.9;
    }

    footer {
      border-top: 1px solid var(--border);
      background: #090909;
      padding: 24px;
      text-align: center;
    }

    .footer-link {
      display: inline-block;
      padding: 9px 12px;
      font-size: 0.8rem;
    }

    @media (max-width: 600px) {
      .nav-inner { padding: 0 16px; min-height: 56px; }
      .nav-links { display: none; }
      .menu-button { display: block; }
      main { padding: 40px 16px; }
    }