:root {
  color-scheme: light;
  --ink: #101418;
  --muted: #5e6670;
  --line: #e5e8eb;
  --paper: #f7f8f8;
  --accent: #0b6b5b;
  --accent-2: #b42318;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: #fff;
  letter-spacing: 0;
}
a { color: inherit; }
.nav {
  height: 62px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 0 clamp(20px, 5vw, 72px);
  border-bottom: 1px solid rgba(16,20,24,.08);
  background: rgba(255,255,255,.94);
  position: sticky;
  top: 0;
  z-index: 20;
}
.brand { font-weight: 700; font-size: 17px; text-decoration: none; white-space: nowrap; }
.nav-links { display: flex; gap: 20px; font-size: 14px; color: var(--muted); }
.nav-links a { text-decoration: none; }
.section { padding: clamp(58px, 8vw, 104px) clamp(20px, 5vw, 72px); }
.band { background: var(--paper); border-block: 1px solid var(--line); }
.inner { width: min(980px, 100%); margin: 0 auto; }
.kicker { color: var(--accent); font-weight: 700; font-size: 14px; margin-bottom: 14px; }
h1 { margin: 0; max-width: 920px; font-size: clamp(38px, 6vw, 72px); line-height: 1.08; }
h2 { margin: 36px 0 12px; font-size: clamp(24px, 3vw, 36px); line-height: 1.2; }
p, li { color: var(--muted); font-size: 17px; line-height: 1.82; }
.lead { max-width: 860px; margin: 22px 0 0; font-size: 19px; }
.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-top: 34px; }
.card { border: 1px solid var(--line); border-radius: 8px; padding: 24px; background: #fff; }
.card h2, .card h3 { margin-top: 0; }
.list { display: grid; gap: 14px; margin-top: 28px; }
.meta { color: var(--accent-2); font-weight: 700; }
.quote-panel {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
}
.quote-panel span { color: var(--accent); font-weight: 700; }
.quote-panel blockquote { margin: 18px 0 8px; font-size: 24px; line-height: 1.35; font-weight: 760; }
.quote-panel a { color: var(--muted); }
.source-list { display: grid; gap: 12px; margin-top: 28px; color: var(--muted); line-height: 1.65; }
footer {
  padding: 28px clamp(20px, 5vw, 72px);
  color: #68717b;
  font-size: 13px;
  line-height: 1.7;
  border-top: 1px solid var(--line);
}
footer .inner { display: flex; justify-content: space-between; gap: 18px; flex-wrap: wrap; }
@media (max-width: 820px) {
  .nav { align-items: flex-start; height: auto; padding-block: 14px; flex-direction: column; }
  .nav-links { flex-wrap: wrap; gap: 12px 18px; }
  .grid { grid-template-columns: 1fr; }
}