:root {
    --bg: #f7f7f4; --card: #ffffff; --ink: #1d2320; --muted: #5d6762; --line: #e3e5e0;
    --brand: #0f7b5f; --brand-ink: #ffffff; --brand-soft: #e3f2ec;
    --crit: #c2412d; --crit-soft: #fbe9e5; --warn: #b7791f; --warn-soft: #fdf3e1; --note: #4b6584; --note-soft: #eaf0f6;
  }
  @media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
      --bg: #121614; --card: #1a1f1c; --ink: #e8ece9; --muted: #a2aca6; --line: #2c332f;
      --brand: #3fbf93; --brand-ink: #0c1310; --brand-soft: #173329;
      --crit: #ef7a66; --crit-soft: #3a1f1a; --warn: #e2a84c; --warn-soft: #382c16; --note: #8fb0d4; --note-soft: #1c2733;
    }
  }
  * { box-sizing: border-box; }
  body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
  .wrap { max-width: 880px; margin: 0 auto; padding: 0 16px; }
  header { padding: 20px 0; display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 20px; }
  .logo { width: 30px; height: 30px; border-radius: 8px; background: var(--brand); color: var(--brand-ink); display: grid; place-items: center; font-size: 16px; }
  .hero { padding: 40px 0 28px; }
  h1 { font-size: clamp(28px, 5vw, 42px); line-height: 1.15; margin: 0 0 12px; letter-spacing: -0.02em; }
  .lead { color: var(--muted); font-size: 18px; margin: 0 0 24px; max-width: 620px; }
  form.check { display: flex; gap: 8px; flex-wrap: wrap; }
  input { font: inherit; padding: 13px 14px; border: 1px solid var(--line); border-radius: 10px; background: var(--card); color: var(--ink); min-width: 0; }
  input:focus { outline: 2px solid var(--brand); outline-offset: 1px; }
  form.check input { flex: 1 1 260px; font-size: 17px; }
  button { font: inherit; font-weight: 600; padding: 13px 20px; border: 0; border-radius: 10px; background: var(--brand); color: var(--brand-ink); cursor: pointer; }
  button:disabled { opacity: .6; cursor: wait; }
  a.btn { display: inline-block; font-weight: 600; padding: 11px 18px; border-radius: 10px; background: var(--brand); color: var(--brand-ink); text-decoration: none; }
  .hint { color: var(--muted); font-size: 14px; margin-top: 10px; }
  .error { color: var(--crit); margin-top: 12px; }
  .card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 22px; margin: 18px 0; }
  .progress { display: flex; align-items: center; gap: 14px; }
  .spinner { width: 26px; height: 26px; border: 3px solid var(--line); border-top-color: var(--brand); border-radius: 50%; animation: spin 0.9s linear infinite; flex: none; }
  @keyframes spin { to { transform: rotate(360deg); } }
  .summary { display: grid; grid-template-columns: 170px 1fr; gap: 24px; align-items: center; }
  @media (max-width: 600px) { .summary { grid-template-columns: 1fr; justify-items: center; text-align: center; } }
  .ring { position: relative; width: 160px; height: 160px; }
  .ring svg { transform: rotate(-90deg); }
  .ring .num { position: absolute; inset: 0; display: grid; place-items: center; text-align: center; }
  .ring .num b { font-size: 44px; line-height: 1; display: block; }
  .ring .num span { color: var(--muted); font-size: 13px; }
  .site { font-weight: 600; word-break: break-all; }
  .muted { color: var(--muted); }
  .cats { display: grid; gap: 10px; margin-top: 6px; }
  .cat { display: grid; grid-template-columns: 140px 1fr 44px; gap: 10px; align-items: center; font-size: 15px; }
  .bar { height: 8px; background: var(--line); border-radius: 99px; overflow: hidden; }
  .bar i { display: block; height: 100%; border-radius: 99px; }
  .issues { list-style: none; padding: 0; margin: 0; }
  .issue { border-top: 1px solid var(--line); padding: 14px 0; }
  .issue:first-child { border-top: 0; }
  .issue h3 { margin: 0 0 4px; font-size: 16px; display: flex; gap: 8px; align-items: baseline; flex-wrap: wrap; }
  .chip { font-size: 12px; font-weight: 600; padding: 2px 8px; border-radius: 99px; text-transform: capitalize; }
  .chip.critical { background: var(--crit-soft); color: var(--crit); }
  .chip.warning { background: var(--warn-soft); color: var(--warn); }
  .chip.notice { background: var(--note-soft); color: var(--note); }
  .issue p { margin: 4px 0; color: var(--muted); font-size: 15px; }
  .fix { color: var(--ink) !important; }
  details { margin-top: 6px; font-size: 14px; }
  details ul { margin: 6px 0 0; padding-left: 18px; word-break: break-all; }
  .unlock { background: var(--brand-soft); border-color: transparent; }
  .unlock h2 { margin-top: 0; }
  .unlock form { display: grid; grid-template-columns: repeat(3, 1fr) auto; gap: 8px; }
  @media (max-width: 720px) { .unlock form { grid-template-columns: 1fr; } }
  .ok { background: var(--brand-soft); }
  h2 { font-size: 20px; margin: 0 0 12px; }
  footer { color: var(--muted); font-size: 13px; padding: 30px 0 40px; }
  [hidden] { display: none !important; }

/* ---- shared site chrome: nav, footer, content pages ---- */
a { color: var(--brand); }
.site-header { padding: 20px 0; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 20px; color: var(--ink); text-decoration: none; }
.site-nav { margin-left: auto; display: flex; gap: 18px; flex-wrap: wrap; font-size: 15px; font-weight: 400; }
.site-nav a { color: var(--muted); text-decoration: none; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--ink); }
.site-footer { color: var(--muted); font-size: 13px; padding: 30px 0 40px; border-top: 1px solid var(--line); margin-top: 40px; }
.site-footer nav { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 10px; font-size: 14px; }
.prose { max-width: 720px; }
.prose h1 { margin-top: 24px; }
.prose h2 { font-size: 22px; margin: 32px 0 10px; }
.prose p, .prose li { color: var(--ink); font-size: 16.5px; }
.prose li { margin: 6px 0; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.grid2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
@media (max-width: 720px) { .grid3, .grid2 { grid-template-columns: 1fr; } }
.tile { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px; }
.tile h3 { margin: 0 0 6px; font-size: 16px; }
.tile p { margin: 0; color: var(--muted); font-size: 15px; }
.step { display: flex; gap: 14px; align-items: flex-start; }
.step b.n { flex: none; width: 30px; height: 30px; border-radius: 50%; background: var(--brand); color: var(--brand-ink); display: grid; place-items: center; font-size: 15px; }
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 12px 16px; margin: 10px 0; }
.faq summary { font-weight: 600; cursor: pointer; }
.faq p { margin: 8px 0 0; color: var(--muted); }
.section { margin: 44px 0; }
.section > h2 { font-size: 24px; margin: 0 0 14px; }
.cta { display: inline-block; font-weight: 600; padding: 12px 20px; border-radius: 10px; background: var(--brand); color: var(--brand-ink); text-decoration: none; }
.linkbtn { background: none; border: 0; padding: 6px 0 0; color: var(--brand); font-weight: 600; font-size: 14px; cursor: pointer; text-decoration: underline; }
.coverage h2 { font-size: 20px; margin: 0 0 6px; }
.coverage > p { margin: 0 0 12px; font-size: 15px; }
.pillar { display: flex; gap: 12px; padding: 10px 0; border-top: 1px solid var(--line); }
.pillar .pi { flex: none; width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center; font-weight: 700; }
.pillar.full .pi { background: var(--brand-soft); color: var(--brand); }
.pillar.partial .pi { background: var(--warn-soft); color: var(--warn); }
.pillar.none .pi { background: var(--note-soft); color: var(--note); }
.pillar .pl { font-size: 13px; font-weight: 600; margin-top: 2px; }
.pillar.full .pl { color: var(--brand); } .pillar.partial .pl { color: var(--warn); } .pillar.none .pl { color: var(--note); }
.pillar p { margin: 2px 0 0; font-size: 14px; color: var(--muted); }