:root {
  --ink: #1c1915;
  --muted: #5c564c;
  --line: #e4ddd2;
  --paper: #f7f4ee;
  --card: #fffdf9;
  --gold: #8a6a2f;
  --gold-soft: #f3ead7;
}

* { box-sizing: border-box; }

html { font-size: 18px; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Segoe UI", "PingFang SC", "Noto Sans SC", sans-serif;
  line-height: 1.55;
}

a { color: var(--gold); }

.wrap {
  width: min(880px, calc(100% - 32px));
  margin: 0 auto;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  padding: 22px 0 18px;
  border-bottom: 1px solid var(--line);
}

.mark {
  font-weight: 650;
  letter-spacing: 0.01em;
  text-decoration: none;
  color: var(--ink);
}

.langs a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 12px;
}

.langs a[aria-current="page"] {
  color: var(--ink);
  border-bottom: 2px solid var(--gold);
}

.banner {
  margin-top: 18px;
  padding: 10px 12px;
  background: var(--gold-soft);
  color: var(--muted);
  font-size: 0.86rem;
}

h1 {
  font-size: 2.15rem;
  line-height: 1.2;
  font-weight: 650;
  margin: 28px 0 12px;
}

.lead {
  font-size: 1.12rem;
  margin: 0 0 8px;
}

.sub {
  color: var(--muted);
  margin: 0 0 28px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 0 0 36px;
}

.card, .panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px 16px 14px;
}

.card h2, .panel h2 {
  margin: 0 0 8px;
  font-size: 1rem;
}

.card p, .panel p { margin: 0; }

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 36px;
}

.split h2 { margin-top: 0; }

ul { margin: 8px 0 0; padding-left: 1.1em; }

.evidence a { display: inline-block; margin-right: 18px; }

.bot {
  border-color: #d9c7a2;
  background: #fffaf2;
  margin: 8px 0 40px;
}

label {
  display: block;
  margin: 12px 0 4px;
  font-size: 0.92rem;
}

input, textarea {
  width: 100%;
  font: inherit;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: white;
}

textarea { min-height: 96px; resize: vertical; }

button, a.cta {
  margin-top: 14px;
  font: inherit;
  padding: 8px 16px;
  border: 0;
  border-radius: 6px;
  background: var(--ink);
  color: white;
  cursor: pointer;
}

a.cta {
  display: inline-block;
  text-decoration: none;
}

.note {
  display: none;
  margin-top: 12px;
  color: var(--muted);
}

footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.86rem;
  padding: 16px 0 32px;
}

.article h2 {
  font-size: 1.25rem;
  margin: 28px 0 8px;
}

.article blockquote {
  margin: 16px 0;
  padding: 8px 14px;
  border-left: 3px solid var(--gold);
  color: var(--muted);
}

.article li { margin: 4px 0; }

@media (max-width: 720px) {
  h1 { font-size: 1.7rem; }
  .grid, .split { grid-template-columns: 1fr; }
}