:root {
  --ink: #070707;
  --paper: #f4f0e7;
  --signal: #ff4d00;
  --muted: #77736b;
  --line: rgba(7, 7, 7, 0.18);
  --display: "Arial Narrow", "Roboto Condensed", Impact, sans-serif;
  --body: Inter, "Helvetica Neue", Arial, sans-serif;
  --serif: Georgia, "Times New Roman", serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--body); -webkit-font-smoothing: antialiased; }
.article-page { overflow: hidden; }

.article-hero {
  position: relative;
  display: grid;
  grid-template-columns: 44px minmax(0, 900px) 64px;
  align-items: end;
  justify-content: center;
  gap: clamp(24px, 4vw, 58px);
  min-height: 520px;
  padding: 148px clamp(24px, 5vw, 80px) 64px;
  border-bottom: 1px solid var(--line);
}
.article-hero::before {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(90deg, transparent 0 49.95%, rgba(7,7,7,.04) 50%, transparent 50.05%), linear-gradient(rgba(7,7,7,.035) 1px, transparent 1px);
  background-size: 100% 100%, 100% 48px;
  content: "";
  pointer-events: none;
}
.article-rail {
  align-self: stretch;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding-bottom: 5px;
  color: var(--muted);
  font: 700 10px/1 var(--body);
  letter-spacing: .2em;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  text-transform: uppercase;
}
.article-heading { width: 100%; max-width: 900px; }
.article-back {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 42px;
  color: var(--ink);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
  text-decoration: none;
  text-transform: uppercase;
}
.article-back::before { content: "←"; color: var(--signal); font-size: 17px; transition: transform 180ms ease; }
.article-back:hover::before { transform: translateX(-4px); }
.article-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 9px 14px; color: var(--muted); font-size: 11px; font-weight: 700; letter-spacing: .11em; text-transform: uppercase; }
.article-meta span + span::before { margin-right: 14px; color: var(--signal); content: "/"; }
.article-heading h1 {
  max-width: 880px;
  margin: 22px 0 24px;
  font: 700 clamp(44px, 5vw, 68px)/.98 var(--display);
  letter-spacing: -.045em;
  text-wrap: balance;
  text-transform: uppercase;
}
.article-dek { max-width: 740px; margin: 0; color: #34322e; font: 400 clamp(18px, 1.7vw, 23px)/1.55 var(--serif); text-wrap: pretty; }
.article-sequence { align-self: end; padding-bottom: 3px; color: var(--muted); font: 700 11px/1 var(--body); letter-spacing: .14em; text-align: right; }
.article-sequence strong { display: block; margin-bottom: 8px; color: var(--ink); font: 700 30px/.9 var(--display); letter-spacing: -.03em; }

.article-layout {
  display: grid;
  grid-template-columns: minmax(190px, 230px) minmax(0, 720px);
  justify-content: center;
  gap: clamp(48px, 7vw, 108px);
  padding: clamp(68px, 7vw, 104px) clamp(24px, 5vw, 80px) 112px;
}
.article-aside { align-self: start; position: sticky; top: 112px; }
.article-aside-label { margin: 0 0 18px; color: var(--signal); font-size: 10px; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; }
.article-source-title { margin: 0 0 8px; font: 700 17px/1.3 var(--body); }
.article-source-meta { margin: 0 0 22px; color: var(--muted); font-size: 13px; line-height: 1.55; }
.article-source-link { display: inline-flex; align-items: center; gap: 8px; padding-bottom: 5px; border-bottom: 1px solid var(--ink); color: var(--ink); font-size: 11px; font-weight: 800; letter-spacing: .08em; text-decoration: none; text-transform: uppercase; }
.article-source-link::after { color: var(--signal); content: "↗"; }
.article-content { width: 100%; max-width: 720px; }
.article-takeaway { margin-bottom: 54px; padding: 27px 0 29px; border-top: 3px solid var(--ink); border-bottom: 1px solid var(--line); }
.article-takeaway span { display: block; margin-bottom: 14px; color: var(--signal); font-size: 10px; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; }
.article-takeaway p { margin: 0; font: 400 clamp(22px, 2.4vw, 28px)/1.46 var(--serif); letter-spacing: -.018em; text-wrap: pretty; }
.article-prose p { margin: 0 0 1.65em; color: #252421; font-size: 18px; line-height: 1.88; text-wrap: pretty; }
.article-prose p:first-child::first-letter { float: left; margin: .08em .11em 0 0; color: var(--signal); font: 700 3.25em/.78 var(--display); }
.article-disclosure { margin-top: 56px; padding: 22px 24px; border-left: 3px solid var(--signal); background: rgba(255,255,255,.32); color: var(--muted); font-size: 13px; line-height: 1.7; }
.article-nav { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; margin-top: 74px; background: var(--line); border: 1px solid var(--line); }
.article-nav a { min-height: 142px; padding: 24px; color: var(--ink); background: var(--paper); text-decoration: none; transition: background 180ms ease, color 180ms ease; }
.article-nav a:hover { color: #fff; background: var(--ink); }
.article-nav small { display: block; margin-bottom: 18px; color: var(--signal); font-size: 9px; font-weight: 800; letter-spacing: .15em; text-transform: uppercase; }
.article-nav strong { display: block; font-size: 15px; line-height: 1.5; }
.article-nav .next { text-align: right; }

html[lang^="zh"] .article-heading h1 { font-family: var(--body); font-size: clamp(40px, 4.4vw, 60px); font-weight: 680; line-height: 1.12; letter-spacing: -.045em; text-transform: none; }
html[lang^="zh"] .article-dek,
html[lang^="zh"] .article-takeaway p { font-family: var(--body); }
html[lang^="zh"] .article-prose p { line-height: 2; }

@media (max-width: 900px) {
  .article-hero { grid-template-columns: minmax(0, 1fr) 52px; min-height: 500px; }
  .article-rail { display: none; }
  .article-layout { grid-template-columns: minmax(0, 720px); }
  .article-aside { position: static; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px 24px; padding-bottom: 30px; border-bottom: 1px solid var(--line); }
  .article-aside-label, .article-source-title, .article-source-meta { grid-column: 1; margin-bottom: 0; }
  .article-source-link { grid-column: 2; grid-row: 1 / 4; align-self: center; }
}

@media (max-width: 620px) {
  .article-hero { grid-template-columns: minmax(0, 1fr); min-height: auto; padding: 120px 20px 44px; }
  .article-back { margin-bottom: 34px; }
  .article-meta { gap: 8px 10px; font-size: 9px; }
  .article-meta span + span::before { margin-right: 10px; }
  .article-heading h1 { margin: 17px 0 20px; font-size: 40px; line-height: 1.02; }
  html[lang^="zh"] .article-heading h1 { font-size: 36px; line-height: 1.16; letter-spacing: -.04em; }
  .article-dek { font-size: 17px; line-height: 1.65; }
  .article-sequence { display: none; }
  .article-layout { gap: 46px; padding: 48px 20px 78px; }
  .article-aside { display: block; }
  .article-aside-label { margin-bottom: 13px; }
  .article-source-title { margin-bottom: 6px; }
  .article-source-meta { margin-bottom: 18px; }
  .article-takeaway { margin-bottom: 42px; padding: 22px 0 24px; }
  .article-takeaway p { font-size: 21px; line-height: 1.55; }
  .article-prose p { font-size: 17px; line-height: 1.9; }
  html[lang^="zh"] .article-prose p { line-height: 1.95; }
  .article-prose p:first-child::first-letter { font-size: 2.9em; }
  .article-disclosure { margin-top: 44px; padding: 18px; }
  .article-nav { grid-template-columns: 1fr; margin-top: 56px; }
  .article-nav a { min-height: 118px; padding: 22px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .article-back::before, .article-nav a { transition: none; }
}