:root { --bg:#0f1115; --panel:#181b22; --panel-2:#1f232c; --border:#2a2f3a;
          --text:#e7eaf0; --muted:#9aa3b2; --accent:#4f8cff;
          --good:#57ab5a; --warn:#d4a72c; --bad:#e5534b; }
  @media (prefers-color-scheme: light) {
    :root { --bg:#f6f7f9; --panel:#fff; --panel-2:#f1f3f7; --border:#dfe3ea;
            --text:#171a21; --muted:#5d6675; }
  }
  /* theme.py's :root[data-theme] rules win on specificity and order; these media-query
     blocks are the no-JavaScript fallback, per CLAUDE.md. */
  * { box-sizing: border-box; }
  [hidden] { display: none !important; }
  body { margin:0; font: 16px/1.6 -apple-system, "Segoe UI", Roboto, sans-serif;
         background: var(--bg); color: var(--text); }
  .wrap { max-width: 920px; margin: 0 auto; padding: 30px 16px 70px; }
  h1 { font-size: 30px; line-height: 1.2; margin: 18px 0 8px; }
  .lede { color: var(--muted); margin: 0 0 24px; font-size: 17px; }
  a { color: var(--accent); }

  form.main { display: flex; gap: 10px; flex-wrap: wrap; background: var(--panel);
              border: 1px solid var(--border); border-radius: 12px; padding: 16px; }
  form.main label, .email label { flex: 1 1 200px; display: block; font-size: 13px; color: var(--muted); }
  input, select { width: 100%; margin-top: 5px; padding: 11px 12px; font-size: 15px;
                  border-radius: 8px; border: 1px solid var(--border);
                  background: var(--bg); color: var(--text); }
  button.go { flex: 0 0 auto; align-self: flex-end; padding: 11px 22px; font-size: 15px;
              font-weight: 650; border: 0; border-radius: 8px; cursor: pointer;
              background: var(--accent-btn, var(--accent)); color: #fff; }
  button.go[disabled] { opacity: .6; cursor: default; }
  .or { flex: 1 1 100%; color: var(--muted); font-size: 13px; margin: 0; }
  .hint { color: var(--muted); font-size: 13px; margin: 10px 2px 0; }

  .msg { margin-top: 20px; padding: 14px 16px; border-radius: 10px;
         border: 1px solid var(--border); background: var(--panel); }
  .msg.bad { border-color: var(--bad); }

  .card { margin-top: 22px; background: var(--panel); border: 1px solid var(--border);
          border-radius: 14px; padding: 18px; }
  .card h2 { margin: 0 0 4px; font-size: 20px; }
  .card .sub { margin: 0 0 14px; color: var(--muted); font-size: 14px; }
  .scroll { overflow-x: auto; }
  table { border-collapse: collapse; width: 100%; min-width: 560px; font-size: 14px; }
  th, td { padding: 8px 10px; border-top: 1px solid var(--border); text-align: center; vertical-align: middle; }
  th:first-child, td:first-child { text-align: left; }
  thead th { border-top: 0; vertical-align: bottom; font-size: 13px; }
  thead th.you { color: var(--accent); }
  .site { display: block; font-weight: 400; color: var(--muted); font-size: 12px; overflow-wrap: anywhere; }
  .score { font-size: 22px; font-weight: 700; }
  .na { color: var(--muted); font-style: italic; font-size: 13px; }
  .pass { color: var(--good); font-weight: 700; }
  .fail { color: var(--bad); font-weight: 700; }
  .small { color: var(--muted); font-size: 12px; }

  .email { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 18px; }
  .cta { margin-top: 24px; text-align: center; background: var(--panel-2);
         border: 1px solid var(--border); border-radius: 12px; padding: 22px; }
  .cta h3 { margin: 0 0 6px; font-size: 19px; }
  .cta p { margin: 0 0 14px; color: var(--muted); font-size: 14px; }
  .cta a.btn { display: inline-block; background: var(--accent); color: #fff;
               text-decoration: none; font-weight: 650; padding: 12px 26px; border-radius: 9px; }
  .spinner { display:inline-block; width:14px; height:14px; margin-right:7px;
             border:2px solid var(--border); border-top-color: var(--accent);
             border-radius:50%; animation: spin .7s linear infinite; vertical-align:-2px; }
  @keyframes spin { to { transform: rotate(360deg); } }
  @media (prefers-reduced-motion: reduce) { .spinner { animation: none; } }