:root {
  --bg: #f6f7f4;
  --surface: #ffffff;
  --text: #222222;
  --muted: #666666;
  --accent: #1f6f5d;
  --line: #d9ddd8;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.container {
  max-width: 920px;
  margin: 0 auto;
  padding: 20px 16px 40px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
}

.hero h1,
h1 {
  margin: 8px 0;
  font-size: clamp(1.4rem, 3.2vw, 2rem);
  line-height: 1.45;
}

h2 {
  margin: 0 0 6px;
  font-size: 1.1rem;
}

h3 {
  margin: 14px 0 4px;
  font-size: 0.98rem;
}

ul {
  margin: 6px 0 0;
  padding-left: 20px;
}

.eyebrow {
  margin: 0;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  opacity: 0.7;
}

.purpose {
  color: var(--muted);
  font-size: 0.88rem;
}

.hero {
  padding-top: 34px;
  padding-bottom: 28px;
}

.divider {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 20px 0 18px;
}

.section-intro {
  margin-top: 18px;
}

.section-title {
  margin: 0;
  font-size: 0.98rem;
  letter-spacing: 0.06em;
  color: #3e4a44;
}

.section-lead {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.cards,
.stack {
  display: grid;
  gap: 12px;
  margin-top: 12px;
}

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.badge {
  padding: 4px 8px;
  border-radius: 999px;
  font-size: 0.75rem;
  white-space: nowrap;
}

.badge.public {
  background: #eef3f1;
  color: #49625a;
}

.badge.wip {
  background: #f1f3f2;
  color: #5c6661;
}

.badge.update {
  background: #f4f2ed;
  color: #6b6254;
}

a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

a:hover {
  text-decoration: underline;
}

.note {
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.92rem;
}

.load-error {
  margin-top: 12px;
}

.event-image {
  display: block;
  width: 100%;
  max-width: 680px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #f0f2ef;
}

.frame {
  margin: 8px 0 0;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #f9faf8;
  white-space: pre-wrap;
  font-family: "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 0.88rem;
}

.footer {
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.95rem;
}

@media (max-width: 640px) {
  .container {
    padding: 14px 12px 28px;
  }

  .card {
    padding: 14px;
  }
}

.refs {
  margin-top: 10px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #f9faf8;
}

.label {
  margin: 0 0 4px;
  font-size: 0.82rem;
  color: var(--muted);
  font-weight: 600;
}

.warning {
  margin-top: 8px;
  padding: 8px 10px;
  border-left: 3px solid #c98b1e;
  background: #fcf6ea;
  color: #574220;
  border-radius: 4px;
}

.changelog {
  margin: 8px 0;
}

.changelog ul {
  margin-top: 4px;
}

.next-steps ul {
  margin-top: 6px;
}

.diagram {
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fbfcfa;
}

.diagram rect,
.diagram line {
  stroke: #5d6762;
  stroke-width: 1.2;
  fill: #ffffff;
}

.diagram text {
  fill: #25302b;
  font-size: 11px;
}

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

.dict-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 820px;
  border: 1px solid var(--line);
}

.dict-table th,
.dict-table td {
  border: 1px solid var(--line);
  padding: 8px;
  vertical-align: top;
  font-size: 0.9rem;
}

.dict-table th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: #f0f4f1;
  text-align: left;
}

.warning-cell {
  color: #6a4c19;
  background: #fcf7ec;
}

.checklist {
  list-style: none;
  padding-left: 0;
}

.checklist li {
  position: relative;
  padding-left: 26px;
  margin: 6px 0;
}

.checklist li::before {
  content: "\2610";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--accent);
  font-size: 0.95rem;
}

.timing {
  display: inline-block;
  margin: 0 0 6px;
  padding: 3px 8px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #f3f6f3;
  color: #47524c;
  font-size: 0.8rem;
}

.search input {
  width: 100%;
  margin-top: 6px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fcfdfb;
  font-size: 0.95rem;
}

.results {
  margin-top: 10px;
  display: grid;
  gap: 8px;
}

.result-item {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px 10px;
  background: #fbfcfa;
}

.search-badge {
  display: inline-block;
  margin-right: 8px;
  padding: 2px 6px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.73rem;
  color: #55635d;
  background: #f1f4f2;
}