:root {
    --bg: #0f1115;
    --card: #171a21;
    --line: #2a3140;
    --text: #e8edf5;
    --muted: #8b95a8;
    --ok: #3dd68c;
    --bad: #ff6b7a;
    --warn: #f5c15c;
    --accent: #7aa2ff;
  }
  * { box-sizing: border-box; }
  body {
    margin: 0; font: 14px/1.45 ui-sans-serif, system-ui, sans-serif;
    background: var(--bg); color: var(--text);
  }
  header { padding: 20px 24px 8px; max-width: 1280px; margin: 0 auto; }
  h1 { font-size: 20px; margin: 0 0 8px; }
  .sub { color: var(--muted); max-width: 820px; }
  .bar { display: flex; flex-wrap: wrap; gap: 8px; padding: 12px 24px 20px; max-width: 1280px; margin: 0 auto; }
  button {
    background: #243049; color: var(--text); border: 1px solid var(--line);
    border-radius: 8px; padding: 8px 12px; cursor: pointer;
  }
  button.primary { background: #2d4a8f; border-color: #3d63b8; }
  button:hover { filter: brightness(1.12); }
  main { max-width: 1280px; margin: 0 auto; padding: 0 24px 48px; }
  .grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
  @media (max-width: 980px) { .grid { grid-template-columns: 1fr; } }
  .card {
    background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px;
  }
  .card h2 { font-size: 13px; letter-spacing: .04em; text-transform: uppercase; color: var(--muted); margin: 0 0 10px; }
  pre {
    margin: 0; white-space: pre-wrap; word-break: break-word;
    font: 12px/1.4 ui-monospace, SFMono-Regular, Menlo, monospace;
    max-height: 420px; overflow: auto;
  }
  table { width: 100%; border-collapse: collapse; font-size: 12px; }
  th, td { border-bottom: 1px solid var(--line); padding: 6px 8px; vertical-align: top; text-align: left; }
  th { color: var(--muted); font-weight: 600; }
  .same { color: var(--ok); }
  .diff { color: var(--bad); }
  .internal { color: var(--warn); }
  .tag { display: inline-block; padding: 1px 6px; border-radius: 999px; font-size: 11px; margin-left: 6px; }
  .tag.bad { background: #3a1c22; color: var(--bad); }
  .tag.ok { background: #163226; color: var(--ok); }
  .tag.warn { background: #3a3118; color: var(--warn); }
  .hint { color: var(--muted); font-size: 12px; margin-top: 8px; }
  .score {
    font-size: 28px; font-weight: 700; margin: 4px 0 8px;
  }
  .kv { font: 12px/1.5 ui-monospace, SFMono-Regular, Menlo, monospace; }
  .kv div { display: grid; grid-template-columns: 140px 1fr; gap: 4px 10px; padding: 3px 0; border-bottom: 1px solid var(--line); }
  .kv b { color: var(--muted); font-weight: 600; }
  button { min-height: 44px; }
  @media (max-width: 640px) {
    header, .bar, main { padding-left: 14px; padding-right: 14px; }
    h1 { font-size: 18px; }
    .kv div { grid-template-columns: 1fr; }
  }
  .topnav { display:flex; align-items:center; gap:12px; margin-bottom:10px; }
  .topnav a { color: var(--muted); text-decoration:none; font-size:12px; }
  .topnav a:hover { color: var(--text); }
  .engine-pill {
    display:inline-flex; align-items:center; gap:6px;
    font-size:11px; letter-spacing:.06em; text-transform:uppercase;
    color: var(--accent); border:1px solid var(--line); border-radius:999px;
    padding:3px 9px;
  }