:root {
  --ink: #071f2b;
  --ink-soft: #173b49;
  --paper: #f4f1ea;
  --paper-light: #fffdf8;
  --muted: #60727a;
  --line: rgba(7,31,43,.15);
  --amber: #f3a712;
  --white: #fff;
  --max: 1120px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}
a { color: inherit; }
.legacy-header { min-height: 76px; }
.hero {
  position: relative;
  overflow: hidden;
  padding: 104px 24px 116px;
  color: var(--white);
  background: var(--ink);
}
.hero::before,
.hero::after {
  content: "";
  position: absolute;
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 50%;
  pointer-events: none;
}
.hero::before { width: 480px; height: 480px; right: -120px; top: -210px; }
.hero::after { width: 620px; height: 620px; right: -260px; top: -280px; }
.hero-inner,
.article-shell { width: min(var(--max), 100%); margin-inline: auto; }
.eyebrow {
  margin: 0 0 24px;
  color: var(--amber);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: .18em;
  text-transform: uppercase;
}
.hero h1 {
  max-width: 980px;
  margin: 0;
  font-size: clamp(42px, 6.5vw, 78px);
  line-height: 1.03;
  letter-spacing: -.048em;
}
.hero-lead {
  max-width: 760px;
  margin: 30px 0 0;
  color: #c5d2d7;
  font-size: clamp(18px, 2.1vw, 23px);
}
.meta {
  display: flex;
  gap: 12px 24px;
  flex-wrap: wrap;
  margin-top: 38px;
  color: #9fb2b9;
  font-size: 13px;
}
.meta span + span::before { content: "·"; margin-right: 24px; color: var(--amber); }
main { padding: 0 24px 110px; }
.article-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 250px;
  gap: 72px;
  align-items: start;
}
article {
  margin-top: -44px;
  padding: clamp(34px, 6vw, 72px);
  background: var(--paper-light);
  box-shadow: 0 24px 60px rgba(7,31,43,.08);
}
article > p:first-child { margin-top: 0; font-size: 21px; line-height: 1.65; }
article p { color: var(--ink-soft); font-size: 17px; }
article h2 {
  margin: 56px 0 18px;
  font-size: clamp(29px, 4vw, 44px);
  line-height: 1.08;
  letter-spacing: -.035em;
}
article ul { margin: 22px 0 34px; padding: 0; list-style: none; border-top: 1px solid var(--line); }
article li { position: relative; padding: 18px 0 18px 36px; border-bottom: 1px solid var(--line); color: var(--ink-soft); }
article li::before { content: "↗"; position: absolute; left: 0; color: var(--amber); font-weight: 900; }
article a { font-weight: 800; text-decoration-color: var(--amber); text-decoration-thickness: 2px; text-underline-offset: 4px; }
article a:hover { color: #8b5b00; }
.side {
  position: sticky;
  top: 108px;
  margin-top: 44px;
  padding-top: 22px;
  border-top: 3px solid var(--amber);
}
.side small { display: block; color: var(--muted); font-size: 11px; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.side strong { display: block; margin-top: 10px; font-size: 21px; line-height: 1.25; }
.side p { margin: 14px 0 0; color: var(--muted); font-size: 14px; }
.side a { display: inline-block; margin-top: 20px; padding: 12px 16px; background: var(--amber); font-size: 12px; font-weight: 850; text-decoration: none; }
.author {
  display: flex;
  gap: 18px;
  align-items: center;
  margin-top: 58px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}
.author-mark {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--ink);
  color: var(--amber);
  font-size: 12px;
  font-weight: 900;
}
.author p { margin: 0; color: var(--muted); font-size: 13px; }
.author strong { display: block; color: var(--ink); font-size: 15px; }
footer { padding: 30px 24px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }
.footer-inner { width: min(var(--max), 100%); margin-inline: auto; display: flex; justify-content: space-between; gap: 20px; }
html[lang="zh-CN"] .hero h1 { max-width: 900px; letter-spacing: -.035em; }
html[lang="zh-CN"] article p,
html[lang="zh-CN"] article li { line-height: 1.9; }
@media (max-width: 820px) {
  .hero { padding-top: 76px; padding-bottom: 90px; }
  .article-shell { grid-template-columns: 1fr; gap: 0; }
  article { margin-top: -28px; }
  .side { position: static; margin: 44px 0 0; }
}
@media (max-width: 540px) {
  .hero h1 { letter-spacing: -.03em; }
  .meta { display: block; }
  .meta span { display: block; margin-top: 5px; }
  .meta span + span::before { content: none; }
  main { padding-inline: 14px; }
  article { padding: 30px 22px; }
  .footer-inner { display: block; }
}