:root {
  color-scheme: light;
  --paper: #fbfaf7;
  --surface: #ffffff;
  --surface-2: #f2efe8;
  --ink: #201f1c;
  --muted: #6c6861;
  --faint: #918b82;
  --line: rgba(32, 31, 28, .13);
  --line-strong: rgba(32, 31, 28, .24);
  --accent: #1769aa;
  --accent-soft: #eaf4fb;
  --tag: #eeeae2;
  --code: #2e725b;
  --shadow: 0 18px 50px rgba(55, 48, 38, .07), 0 2px 8px rgba(55, 48, 38, .04);
  --serif: Georgia, 'Times New Roman', 'Noto Serif CJK SC', 'Songti SC', serif;
  --sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans CJK SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}
[data-theme="dark"] {
  color-scheme: dark;
  --paper: #181816;
  --surface: #201f1c;
  --surface-2: #292722;
  --ink: #f3f0e9;
  --muted: #b8b2a8;
  --faint: #918b82;
  --line: rgba(255, 255, 255, .11);
  --line-strong: rgba(255, 255, 255, .22);
  --accent: #75b8ec;
  --accent-soft: #183348;
  --tag: #302e29;
  --code: #8bd0b8;
  --shadow: none;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration-thickness: .08em; text-underline-offset: .18em; }
a:hover { color: var(--accent); }
button, a { -webkit-tap-highlight-color: transparent; }
button:focus-visible, a:focus-visible { outline: 3px solid color-mix(in srgb, var(--accent) 45%, transparent); outline-offset: 3px; }
.site-shell { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.masthead { border-bottom: 1px solid var(--line-strong); }
.masthead-top {
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font: 600 12px/1.2 var(--mono);
  letter-spacing: .08em;
  text-transform: uppercase;
}
.brand-row { padding: 30px 0 24px; display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: end; }
.wordmark { margin: 0; font: 700 clamp(38px, 7vw, 78px)/.9 var(--serif); letter-spacing: -.055em; }
.wordmark a { text-decoration: none; }
.edition { text-align: right; color: var(--muted); font: 500 13px/1.5 var(--mono); }
.nav-row { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 10px 0; overflow-x: auto; }
.nav-links, .actions { display: flex; align-items: center; gap: 8px; }
.nav-link, .control {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 7px 12px;
  background: transparent;
  color: var(--muted);
  font: 650 13px/1 var(--sans);
  cursor: pointer;
  white-space: nowrap;
  text-decoration: none;
}
.nav-link:hover, .control:hover, .control[aria-pressed="true"] { background: var(--surface-2); color: var(--ink); }
.control { border-color: var(--line); }
.hero { display: grid; grid-template-columns: minmax(0, 1.65fr) minmax(260px, .55fr); gap: clamp(36px, 7vw, 88px); padding: 72px 0 58px; border-bottom: 1px solid var(--line-strong); }
.kicker { margin: 0 0 14px; color: var(--accent); font: 700 12px/1.2 var(--mono); letter-spacing: .11em; text-transform: uppercase; }
.issue-title { max-width: 900px; margin: 0; font: 700 clamp(42px, 5.6vw, 70px)/1.03 var(--serif); letter-spacing: -.045em; text-wrap: balance; }
.dek { max-width: 700px; margin: 26px 0 0; color: color-mix(in srgb, var(--muted) 82%, var(--ink)); font: 400 clamp(18px, 1.9vw, 21px)/1.58 var(--serif); text-wrap: pretty; }
.editor-note { align-self: end; border-top: 3px solid var(--ink); padding-top: 18px; }
.editor-note-label { color: var(--faint); font: 700 11px/1 var(--mono); letter-spacing: .11em; text-transform: uppercase; }
.editor-note p { margin: 12px 0 0; font-family: var(--serif); font-size: 17px; line-height: 1.65; }
.briefing-grid { display: grid; grid-template-columns: minmax(0, 1fr) 260px; gap: clamp(40px, 7vw, 80px); padding: 52px 0 80px; }
.section-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 20px; margin-bottom: 8px; }
.section-heading h2 { margin: 0; font: 700 25px/1.2 var(--serif); letter-spacing: -.025em; }
.item-count { color: var(--faint); font: 500 12px/1 var(--mono); }
.story { position: relative; padding: 30px 0 32px; border-top: 1px solid var(--line); }
.story:first-of-type { border-top-color: var(--line-strong); }
.story.featured { padding-top: 36px; }
.story-number { position: absolute; top: 34px; left: -30px; color: var(--muted); font: 600 12px/1 var(--mono); }
.story-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 7px 10px; margin-bottom: 10px; color: color-mix(in srgb, var(--muted) 88%, var(--ink)); font: 650 13px/1.45 var(--mono); }
.story-kind { color: var(--accent); }
.story-title { max-width: 850px; margin: 0; font: 700 clamp(24px, 2.75vw, 35px)/1.16 var(--serif); letter-spacing: -.032em; text-wrap: balance; }
.story.featured .story-title { font-size: clamp(28px, 3.35vw, 43px); }
.story-title a { text-decoration: none; }
.story-title a:hover { text-decoration: underline; text-decoration-thickness: .06em; text-underline-offset: .16em; }
.story-summary { max-width: 740px; margin: 18px 0 0; font-size: 17px; line-height: 1.8; text-wrap: pretty; }
.why { max-width: 740px; margin: 16px 0 0; padding: 14px 16px; background: var(--surface-2); border-radius: 6px; color: color-mix(in srgb, var(--muted) 82%, var(--ink)); font-size: 14px; line-height: 1.7; }
.why strong { color: var(--ink); }
.story-footer { margin-top: 18px; display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.tag { display: inline-flex; align-items: center; min-height: 27px; padding: 4px 9px; border-radius: 999px; background: var(--tag); color: var(--muted); font: 600 12px/1 var(--sans); }
.code-link { color: var(--accent); font: 700 12px/1 var(--mono); text-decoration: none; }
.sidebar { position: relative; }
.sidebar-inner { position: sticky; top: 24px; max-height: calc(100vh - 48px); overflow: auto; padding-right: 4px; }
.sidebar-block { padding: 20px 0; border-top: 2px solid var(--ink); }
.sidebar-title { margin: 0 0 14px; font: 700 13px/1.2 var(--sans); }
.filter-list { display: flex; flex-wrap: wrap; gap: 7px; }
.filter-button { border: 1px solid var(--line); background: var(--surface); color: var(--muted); border-radius: 999px; padding: 7px 10px; font: 600 12px/1 var(--sans); cursor: pointer; }
.filter-button:hover, .filter-button.active { border-color: var(--ink); color: var(--ink); }
.archive-list { list-style: none; margin: 0; padding: 0; }
.archive-list li { border-top: 1px solid var(--line); }
.archive-list a { display: grid; grid-template-columns: 80px 1fr; gap: 12px; padding: 12px 0; text-decoration: none; font-size: 13px; line-height: 1.4; }
.archive-date { color: var(--faint); font-family: var(--mono); font-size: 11px; }
.source-note { color: color-mix(in srgb, var(--muted) 88%, var(--ink)); font-size: 14px; line-height: 1.68; }
.toc-list { list-style: none; margin: 0; padding: 0; }
.toc-list li { border-top: 1px solid var(--line); }
.toc-list a { display: grid; grid-template-columns: 28px 1fr; gap: 8px; padding: 10px 0; text-decoration: none; font-size: 12px; line-height: 1.4; }
.toc-number { color: var(--faint); font-family: var(--mono); font-size: 10px; }
.empty-state { display: none; padding: 50px 0; color: var(--muted); font-family: var(--serif); font-size: 20px; }
.site-footer { border-top: 1px solid var(--line-strong); padding: 30px 0 50px; color: var(--muted); font-size: 13px; }
.footer-row { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.footer-links { display: flex; gap: 16px; flex-wrap: wrap; }
[data-hidden="true"] { display: none; }
@media (max-width: 860px) {
  .brand-row { grid-template-columns: 1fr; }
  .edition { text-align: left; }
  .hero { grid-template-columns: 1fr; padding-top: 52px; }
  .editor-note { max-width: 620px; }
  .briefing-grid { grid-template-columns: 1fr; }
  .sidebar-inner { position: static; display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
  .story-number { display: none; }
}
@media (max-width: 580px) {
  .site-shell { width: min(100% - 28px, 1180px); }
  .masthead-top { font-size: 10px; }
  .wordmark { font-size: 43px; }
  .nav-row { align-items: flex-start; }
  .nav-links { gap: 2px; }
  .nav-link { padding-inline: 9px; }
  .hero { padding: 44px 0 40px; gap: 34px; }
  .briefing-grid { padding-top: 38px; }
  .story { padding: 27px 0 29px; }
  .story-title { font-size: 29px; }
  .sidebar-inner { grid-template-columns: 1fr; }
}
@media print {
  .actions, .nav-row, .sidebar, .site-footer { display: none !important; }
  .site-shell { width: 100%; }
  .briefing-grid, .hero { grid-template-columns: 1fr; }
  body { background: white; color: black; font-size: 11pt; }
  .story { break-inside: avoid; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}