:root {
      color-scheme: dark;
      --ink: #e8edf5;
      --paper: #0f1419;
      --cream: #151c26;
      --surface: #1a2330;
      --accent: #14b8a6;
      --accent2: #2dd4bf;
      --muted: #94a3b8;
      --border: #334155;
      --warn: #fb923c;
      --danger: #f87171;
      --success: #34d399;
      --radius: 8px;
      --font-head: 'Playfair Display', Georgia, serif;
      --font-body: 'DM Mono', 'Courier New', monospace;
    }

    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      background: var(--paper);
      color: var(--ink);
      font-family: var(--font-body);
      min-height: 100vh;
      display: flex;
      flex-direction: column;
      align-items: center;
      padding: 0 1rem 3rem;
      position: relative;
    }
    body::before {
      content: '';
      position: fixed;
      inset: 0;
      background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
      pointer-events: none;
      z-index: -1;
      opacity: 0.2;
    }
    header, main, footer {
      width: 100%;
      max-width: 900px;
    }
    header {
      display: flex;
      align-items: baseline;
      justify-content: space-between;
      padding: 2rem 0 1.2rem;
      border-bottom: 2px solid var(--ink);
      margin-bottom: 0;
    }
    .top-nav {
      display: flex;
      gap: 0.7rem;
      align-items: center;
      margin-left: auto;
      margin-right: 1rem;
      flex-wrap: wrap;
    }
    .top-nav a {
      font-size: 0.6rem;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: var(--muted);
      text-decoration: none;
      border: 1px solid var(--border);
      background: var(--surface);
      padding: 0.32rem 0.62rem;
      margin: 0.08rem 0;
      border-radius: 999px;
      box-shadow: 1px 1px 0 rgba(0, 0, 0, 0.2);
      transition: color 0.15s, border-color 0.15s, background 0.15s, transform 0.15s;
    }
    .top-nav a:hover,
    .top-nav a:focus-visible {
      color: var(--ink);
      border-color: var(--accent);
      background: color-mix(in srgb, var(--surface) 65%, var(--accent) 35%);
      transform: translateY(-1px);
      outline: none;
    }
    .top-nav a[aria-current="page"] {
      color: var(--ink);
      border-color: var(--accent);
      background: color-mix(in srgb, var(--surface) 65%, var(--accent) 35%);
    }
    .logo {
      font-family: var(--font-head);
      font-size: clamp(1.6rem, 5vw, 2.4rem);
      font-weight: 900;
      letter-spacing: -0.02em;
      line-height: 1;
      color: var(--ink);
      text-decoration: none;
    }
    .logo span { color: var(--accent); font-style: italic; }
    header h2 {
      font-size: 0.75rem;
      font-weight: 500;
      color: var(--muted);
      letter-spacing: 0.06em;
      text-transform: uppercase;
      margin: 0;
      font-family: var(--font-body);
      line-height: 1.2;
    }
    .tagline {
      font-size: 0.68rem;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: var(--muted);
      font-weight: 300;
    }
    @media (max-width: 480px) {
      header {
        padding: 1.2rem 1rem 1rem;
        display: grid;
        grid-template-columns: 1fr;
        align-items: start;
        justify-items: start;
        gap: 0.45rem;
      }
      .top-nav {
        margin: 0;
        width: 100%;
        justify-content: flex-start;
      }
      .tagline { margin-top: 0.2rem; }
    }

    main {
      margin-top: 1.1rem;
      display: grid;
      gap: 1rem;
    }
    .intro, .panel {
      border: 2px solid var(--ink);
      background: var(--cream);
      padding: 1.1rem;
    }
    .quick-answer {
      border: 2px solid var(--ink);
      background: var(--cream);
      padding: 1.1rem;
      display: grid;
      gap: 0.65rem;
    }
    .quick-answer h2 {
      font-family: var(--font-head);
      font-size: clamp(1.05rem, 2.2vw, 1.35rem);
      line-height: 1.2;
    }
    .quick-answer h3 {
      font-size: 0.62rem;
      letter-spacing: 0.14em;
      text-transform: uppercase;
      color: var(--muted);
      margin-bottom: 0.22rem;
    }
    .quick-answer p,
    .quick-answer li {
      color: var(--ink);
      line-height: 1.55;
      font-size: 0.74rem;
    }
    .quick-answer ul,
    .quick-answer ol {
      margin-left: 1.05rem;
      display: grid;
      gap: 0.25rem;
    }
    .kicker {
      font-size: 0.58rem;
      letter-spacing: 0.16em;
      text-transform: uppercase;
      color: var(--muted);
    }
    h1 {
      font-family: var(--font-head);
      font-size: clamp(1.4rem, 4vw, 2rem);
      margin: 0.5rem 0 0.65rem;
      line-height: 1.2;
    }
    .intro p, .help {
      color: var(--muted);
      line-height: 1.65;
      font-size: 0.8rem;
    }

    .camera-wrap {
      border: 1.5px solid var(--border);
      border-radius: var(--radius);
      overflow: hidden;
      background: #000;
      aspect-ratio: 16 / 9;
      display: flex;
      align-items: center;
      justify-content: center;
      position: relative;
    }
    video {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: none;
    }
    .camera-overlay {
      position: absolute;
      inset: 0;
      border: 2px dashed rgba(255, 255, 255, 0.4);
      pointer-events: none;
      margin: 8%;
      border-radius: var(--radius);
    }

    .status {
      margin-top: 0.7rem;
      font-size: 0.68rem;
      letter-spacing: 0.06em;
      color: var(--muted);
      min-height: 1.2rem;
    }

    .actions {
      margin-top: 0.9rem;
      display: flex;
      flex-wrap: wrap;
      gap: 0.6rem;
    }
    .btn {
      font-family: var(--font-body);
      font-size: 0.66rem;
      letter-spacing: 0.09em;
      text-transform: uppercase;
      border: 1.5px solid var(--ink);
      border-radius: var(--radius);
      background: transparent;
      color: var(--ink);
      padding: 0.48rem 0.9rem;
      cursor: pointer;
    }
    .btn:hover { background: var(--ink); color: var(--surface); }
    .btn-primary {
      background: var(--accent);
      color: var(--surface);
      border-color: var(--accent);
    }
    .btn-primary:hover { background: var(--accent2); border-color: var(--accent2); }
    .btn:disabled {
      opacity: 0.45;
      cursor: not-allowed;
      background: transparent;
      color: var(--muted);
    }

    .result-box {
      margin-top: 1rem;
      border: 1.5px solid var(--border);
      border-radius: var(--radius);
      background: var(--surface);
      padding: 0.8rem;
    }
    .result-label {
      font-size: 0.58rem;
      letter-spacing: 0.14em;
      text-transform: uppercase;
      color: var(--muted);
      margin-bottom: 0.45rem;
    }
    pre {
      white-space: pre-wrap;
      word-break: break-word;
      color: var(--ink);
      font-size: 0.8rem;
      line-height: 1.5;
      max-height: 180px;
      overflow: auto;
    }
    .risk-badge {
      margin-top: 0.65rem;
      display: inline-flex;
      font-size: 0.58rem;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      padding: 0.25rem 0.5rem;
      border-radius: 999px;
      border: 1px solid var(--border);
      color: var(--muted);
    }
    .risk-safe { border-color: var(--success); color: var(--success); }
    .risk-unknown { border-color: var(--warn); color: var(--warn); }
    .risk-risky { border-color: var(--danger); color: var(--danger); }
    .reasons {
      margin-top: 0.65rem;
      margin-left: 1rem;
      color: var(--muted);
      font-size: 0.76rem;
      line-height: 1.55;
      display: grid;
      gap: 0.35rem;
    }
    .warning {
      margin-top: 0.65rem;
      color: var(--danger);
      font-size: 0.74rem;
      line-height: 1.5;
    }
    .privacy {
      margin-top: 0.8rem;
      font-size: 0.62rem;
      color: var(--muted);
      letter-spacing: 0.04em;
    }

    footer {
      margin-top: 1.6rem;
      border-top: 1px solid var(--border);
      padding-top: 0.95rem;
      display: flex;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 0.5rem;
      color: var(--muted);
      font-size: 0.62rem;
      letter-spacing: 0.06em;
    }
    footer a { color: var(--accent); text-decoration: none; }