:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --surface-2: #f0f2f5;
  --border: #e0e4ea;
  --text: #15181d;
  --muted: #5c6573;
  --accent: #2456d3;
  --accent-hover: #1c47b3;
  --accent-text: #ffffff;
  --pass: #17803d;
  --pass-bg: #e5f4ea;
  --warn: #965f00;
  --warn-bg: #fcf1d8;
  --fail: #c42b2b;
  --fail-bg: #fce9e9;
  --info: #4a5563;
  --info-bg: #edf0f4;
  --radius: 12px;
  --font: 'IBM Plex Sans Thai', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1216;
    --surface: #171b21;
    --surface-2: #1e232b;
    --border: #2b323c;
    --text: #e7eaee;
    --muted: #98a2b0;
    --accent: #5b8cff;
    --accent-hover: #7aa2ff;
    --accent-text: #0b1020;
    --pass: #4cc47a;
    --pass-bg: #15301f;
    --warn: #e8b44c;
    --warn-bg: #352a12;
    --fail: #f07070;
    --fail-bg: #3a1a1a;
    --info: #a7b1bf;
    --info-bg: #222831;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.6;
}

code, pre { font-family: var(--mono); font-size: 0.86em; }

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 48px 16px 64px;
}

.hero h1 {
  margin: 0 0 6px;
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  font-weight: 600;
  letter-spacing: -0.01em;
}

.lede {
  margin: 0 0 24px;
  max-width: 62ch;
  color: var(--muted);
}

.check-form {
  display: flex;
  gap: 8px;
  max-width: 640px;
}

.check-form input {
  flex: 1;
  min-width: 0;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-family: var(--mono);
}

.check-form input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: transparent;
}

.check-form button {
  padding: 0 22px;
  border: 0;
  border-radius: 10px;
  background: var(--accent);
  color: var(--accent-text);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}

.check-form button:hover:not(:disabled) { background: var(--accent-hover); }
.check-form button:disabled { opacity: 0.6; cursor: progress; }

.hint {
  margin: 8px 0 32px;
  color: var(--muted);
  font-size: 0.9em;
}

.meta { color: var(--muted); margin: 0 0 16px; }
.meta strong { color: var(--text); font-family: var(--mono); font-weight: 500; }

.error {
  padding: 12px 16px;
  border-radius: var(--radius);
  background: var(--fail-bg);
  color: var(--fail);
}

.platforms {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 460px), 1fr));
  gap: 24px;
  align-items: start;
}

.platform { display: grid; gap: 14px; min-width: 0; }

.platform h2 {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 600;
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.platform h2 span { font-size: 0.8em; font-weight: 400; color: var(--muted); }

.card {
  min-width: 0;
  padding: 16px 18px;
  border: 1px solid var(--border);
  border-top: 3px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}

.card.status-pass { border-top-color: var(--pass); }
.card.status-warn { border-top-color: var(--warn); }
.card.status-fail { border-top-color: var(--fail); }

.card-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 10px;
}

.card-title { min-width: 0; }
.card-title h3 { margin: 0; font-size: 1rem; font-weight: 600; }

.url {
  display: block;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.78em;
  overflow-wrap: anywhere;
  text-decoration: none;
}

.url:hover { color: var(--accent); text-decoration: underline; }

.badge {
  flex-shrink: 0;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 0.8em;
  font-weight: 600;
}

.badge-pass { background: var(--pass-bg); color: var(--pass); }
.badge-warn { background: var(--warn-bg); color: var(--warn); }
.badge-fail { background: var(--fail-bg); color: var(--fail); }

.findings {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 6px;
}

.finding {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  overflow-wrap: anywhere;
}

.finding .icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  border-radius: 50%;
  display: inline-grid;
  place-items: center;
  font-size: 11px;
  font-weight: 700;
  font-family: var(--mono);
}

.finding-pass .icon { background: var(--pass-bg); color: var(--pass); }
.finding-warn .icon { background: var(--warn-bg); color: var(--warn); }
.finding-fail .icon { background: var(--fail-bg); color: var(--fail); }
.finding-info .icon { background: var(--info-bg); color: var(--info); }
.finding-info { color: var(--muted); }

.summary { margin-top: 14px; }

.table-wrap { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88em;
}

th, td {
  padding: 6px 8px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

th { color: var(--muted); font-weight: 500; }
tr:last-child td { border-bottom: 0; }

.fingerprint { overflow-wrap: anywhere; font-size: 0.85em; }

.extra { margin: 8px 0 0; font-size: 0.88em; overflow-wrap: anywhere; }

details { margin-top: 12px; }

details summary {
  cursor: pointer;
  color: var(--muted);
  font-size: 0.88em;
}

details summary:hover { color: var(--text); }

.status-line { margin: 8px 0 0; font-family: var(--mono); font-size: 0.8em; color: var(--muted); }

pre {
  margin: 8px 0 0;
  padding: 12px;
  max-height: 360px;
  overflow: auto;
  border-radius: 8px;
  background: var(--surface-2);
  font-size: 0.78em;
  line-height: 1.5;
}

.about {
  margin-top: 56px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9em;
}

.about h2 { margin: 0 0 12px; font-size: 1rem; color: var(--text); font-weight: 600; }
.about dl { margin: 0; display: grid; gap: 4px; }
.about dt { color: var(--text); font-weight: 500; margin-top: 8px; }
.about dd { margin: 0; overflow-wrap: anywhere; }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

@media (max-width: 520px) {
  .container { padding-top: 32px; }
  .check-form { flex-direction: column; }
  .check-form button { padding: 12px; }
}