:root {
  color-scheme: light;
  --ink: #201f1b;
  --muted: #6f6c64;
  --paper: #f6f3eb;
  --surface: #fffdf7;
  --line: #d9d4c8;
  --accent: #9d392f;
  --accent-soft: #f0ddd7;
  --deep: #303b34;
  --shadow: 0 18px 50px rgba(42, 39, 31, .08);
  --serif: "Songti SC", "STSong", "Noto Serif SC", Georgia, serif;
  --sans: Inter, "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 10% 0%, rgba(157,57,47,.08), transparent 34rem),
    var(--paper);
  font-family: var(--sans);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
button { font: inherit; }
.skip-link { position: fixed; left: 1rem; top: -4rem; z-index: 99; background: var(--ink); color: white; padding: .7rem 1rem; border-radius: 999px; }
.skip-link:focus { top: 1rem; }
.reading-progress { position: fixed; z-index: 60; inset: 0 auto auto 0; width: 0; height: 3px; background: var(--accent); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 68px;
  padding: .85rem clamp(1rem, 4vw, 4rem);
  border-bottom: 1px solid rgba(217,212,200,.86);
  background: rgba(246,243,235,.9);
  backdrop-filter: blur(14px);
}
.brand { display: inline-flex; align-items: center; gap: .75rem; text-decoration: none; font-weight: 700; letter-spacing: .04em; }
.brand-mark { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; color: #fff; background: var(--accent); font-family: var(--serif); }
.site-nav { display: flex; align-items: center; gap: .3rem; }
.site-nav a { padding: .5rem .78rem; border-radius: 999px; color: var(--muted); text-decoration: none; font-size: .9rem; }
.site-nav a:hover, .site-nav a:focus-visible { color: var(--ink); background: var(--surface); }
.menu-toggle { display: none; border: 1px solid var(--line); background: var(--surface); border-radius: 999px; padding: .55rem .8rem; }

.wrap { width: min(1180px, calc(100% - 2rem)); margin-inline: auto; }
.eyebrow { margin: 0 0 .8rem; color: var(--accent); font-size: .76rem; font-weight: 800; letter-spacing: .18em; text-transform: uppercase; }
.display { margin: 0; font: 700 clamp(2.6rem, 7vw, 6.4rem)/.98 var(--serif); letter-spacing: -.045em; text-wrap: balance; }
.lede { max-width: 46rem; margin: 1.5rem 0 0; color: #4f4d46; font: 400 clamp(1rem, 1.7vw, 1.25rem)/1.8 var(--serif); }
.hero { padding: clamp(4rem, 10vw, 8.5rem) 0 4rem; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(270px, .55fr); gap: clamp(2rem, 6vw, 6rem); align-items: end; }
.hero-note { padding: 1.4rem; border: 1px solid var(--line); border-radius: 20px; background: rgba(255,253,247,.72); box-shadow: var(--shadow); }
.hero-note strong { display: block; font: 700 1.15rem/1.4 var(--serif); }
.hero-note p { margin: .65rem 0 0; color: var(--muted); font-size: .91rem; }
.hero-rule { width: 64px; height: 4px; margin-bottom: 1.2rem; background: var(--accent); }

.section { padding: clamp(3.5rem, 8vw, 7rem) 0; border-top: 1px solid var(--line); }
.section-heading { display: grid; grid-template-columns: .62fr 1.38fr; gap: 2rem; margin-bottom: 2.4rem; }
.section-heading h2 { margin: 0; font: 700 clamp(2rem, 4vw, 3.7rem)/1.05 var(--serif); letter-spacing: -.035em; }
.section-heading p { max-width: 44rem; margin: .4rem 0 0; color: var(--muted); }
.kicker { color: var(--accent); font-size: .76rem; font-weight: 800; letter-spacing: .14em; }

.story-grid, .analysis-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.story-card { position: relative; display: flex; flex-direction: column; min-height: 390px; padding: 1.5rem; overflow: hidden; border: 1px solid var(--line); border-radius: 24px; background: var(--surface); box-shadow: var(--shadow); text-decoration: none; transition: transform .25s ease, box-shadow .25s ease; }
.story-card:hover { transform: translateY(-5px); box-shadow: 0 24px 60px rgba(42,39,31,.14); }
.story-card::before { content: ""; position: absolute; inset: 0 0 auto; height: 6px; background: var(--card-accent, var(--accent)); }
.story-no { color: var(--muted); font-size: .78rem; letter-spacing: .14em; }
.story-card h3 { margin: 2.6rem 0 1rem; font: 700 clamp(1.45rem, 2.3vw, 2.15rem)/1.25 var(--serif); }
.story-card p { margin: 0; color: var(--muted); }
.story-meta { display: flex; flex-wrap: wrap; gap: .45rem; margin-top: auto; padding-top: 1.5rem; }
.pill { display: inline-flex; padding: .32rem .65rem; border-radius: 999px; background: #f0ece2; color: #5e5a52; font-size: .76rem; }
.story-arrow { position: absolute; right: 1.25rem; bottom: 1.35rem; color: var(--card-accent, var(--accent)); font-size: 1.35rem; }

.analysis-card { padding: 1.5rem; border-top: 3px solid var(--accent); background: rgba(255,253,247,.62); }
.analysis-card .source { color: var(--muted); font-size: .82rem; }
.analysis-card h3 { margin: .55rem 0 .8rem; font: 700 1.4rem/1.35 var(--serif); }
.analysis-card p { margin: 0; color: #5c5952; font-size: .92rem; }
.analysis-card .absorbed { margin-top: 1.15rem; padding-top: 1rem; border-top: 1px solid var(--line); color: var(--ink); }

.trace-table { overflow-x: auto; border: 1px solid var(--line); border-radius: 20px; background: var(--surface); box-shadow: var(--shadow); }
table { width: 100%; border-collapse: collapse; min-width: 720px; }
th, td { padding: 1rem 1.1rem; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { color: var(--muted); font-size: .76rem; letter-spacing: .08em; text-transform: uppercase; }
td { font-size: .9rem; }
tr:last-child td { border-bottom: 0; }
.status { display: inline-flex; white-space: nowrap; align-items: center; gap: .4rem; color: #366147; font-weight: 700; }
.status::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: #4f8d66; }
.status.warn { color: #98631e; }
.status.warn::before { background: #c88b32; }

.quote-panel { padding: clamp(2rem, 6vw, 5rem); border-radius: 28px; color: #f8f3e7; background: var(--deep); }
.quote-panel blockquote { max-width: 960px; margin: 0; font: 600 clamp(1.8rem, 4vw, 3.8rem)/1.35 var(--serif); letter-spacing: -.025em; }
.quote-panel p { margin: 1.4rem 0 0; color: #c8cfc8; }
.site-footer { padding: 2.5rem 0 4rem; border-top: 1px solid var(--line); color: var(--muted); font-size: .85rem; }

/* article */
.article-hero { padding: clamp(3.5rem, 8vw, 7rem) 0 3rem; }
.article-hero .display { max-width: 980px; font-size: clamp(2.5rem, 6vw, 5.5rem); }
.article-summary { max-width: 820px; margin: 1.6rem 0 0; color: #4e4b45; font: 400 1.08rem/1.85 var(--serif); }
.metric-row { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .7rem; margin-top: 2.2rem; }
.metric { padding: 1rem; border: 1px solid var(--line); border-radius: 15px; background: rgba(255,253,247,.65); }
.metric b { display: block; font: 700 1.35rem/1.2 var(--serif); }
.metric span { color: var(--muted); font-size: .76rem; }
.article-layout { display: grid; grid-template-columns: 190px minmax(0, 700px) minmax(230px, 300px); gap: clamp(1.3rem, 3vw, 3rem); align-items: start; padding-bottom: 6rem; }
.bookmarks, .article-aside { position: sticky; top: 92px; max-height: calc(100vh - 116px); overflow: auto; scrollbar-width: thin; }
.bookmark-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: .7rem; }
.bookmark-head strong { font: 700 1rem var(--serif); }
.bookmark-close { display: none; border: 0; background: transparent; font-size: 1.3rem; }
.bookmarks nav { display: grid; }
.bookmarks a { position: relative; padding: .36rem .45rem .36rem 1rem; border-left: 1px solid var(--line); color: var(--muted); text-decoration: none; font-size: .8rem; }
.bookmarks a::before { content: ""; position: absolute; left: -2px; top: 50%; width: 3px; height: 0; background: var(--accent); transform: translateY(-50%); transition: height .2s; }
.bookmarks a:hover, .bookmarks a.is-active { color: var(--ink); }
.bookmarks a.is-active::before { height: 70%; }
.article-body { padding: clamp(1.5rem, 4vw, 3.4rem); border: 1px solid var(--line); border-radius: 24px; background: var(--surface); box-shadow: var(--shadow); }
.article-body h2 { scroll-margin-top: 92px; margin: 4.5rem 0 1.5rem; padding-top: 1.4rem; border-top: 1px solid var(--line); font: 700 2rem/1.2 var(--serif); }
.article-body h2:first-child { margin-top: 0; padding-top: 0; border-top: 0; }
.article-body p { margin: 0 0 1.18em; font: 400 1.02rem/2.05 var(--serif); text-align: justify; text-justify: inter-ideograph; }
.article-body .intro p { color: #4b4842; font-size: 1.07rem; }
.aside-card { margin-bottom: 1rem; padding: 1rem; border: 1px solid var(--line); border-radius: 16px; background: rgba(255,253,247,.78); }
.aside-card h3 { margin: 0 0 .8rem; font: 700 1rem/1.35 var(--serif); }
.aside-card p, .aside-card li { color: var(--muted); font-size: .8rem; }
.aside-card ul { margin: 0; padding-left: 1.1rem; }
.aside-card li + li { margin-top: .48rem; }
.process-section { padding: 5rem 0; border-top: 1px solid var(--line); }
.process-grid { display: grid; grid-template-columns: .75fr 1.25fr; gap: clamp(2rem, 7vw, 7rem); }
.process-lead { position: sticky; top: 96px; align-self: start; }
.process-lead h2 { margin: 0; font: 700 clamp(2rem, 4vw, 3.7rem)/1.05 var(--serif); }
.process-lead p { color: var(--muted); }
.accordion { border-top: 1px solid var(--line); }
.accordion:last-child { border-bottom: 1px solid var(--line); }
.accordion button { display: flex; width: 100%; align-items: center; justify-content: space-between; padding: 1.15rem 0; border: 0; background: transparent; color: var(--ink); text-align: left; font: 700 1.1rem var(--serif); cursor: pointer; }
.accordion button::after { content: "+"; color: var(--accent); font: 400 1.4rem var(--sans); }
.accordion.is-open button::after { content: "−"; }
.accordion-panel { display: none; padding: 0 0 1.2rem; color: #57544d; font-size: .91rem; }
.accordion.is-open .accordion-panel { display: block; }
.accordion-panel p { margin-top: 0; }
.accordion-panel ul { padding-left: 1.2rem; }
.recommend-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.recommend-card { padding: 1.4rem; border: 1px solid var(--line); border-radius: 18px; background: var(--surface); }
.recommend-card .tag { color: var(--accent); font-size: .75rem; font-weight: 800; letter-spacing: .12em; }
.recommend-card h3 { margin: .6rem 0 .8rem; font: 700 1.3rem var(--serif); }
.recommend-card ul { margin: 0; padding-left: 1.15rem; color: var(--muted); font-size: .87rem; }
.recommend-card li + li { margin-top: .6rem; }
.next-story { display: flex; justify-content: space-between; align-items: center; gap: 2rem; margin-top: 3rem; padding: 1.4rem 0; border-top: 1px solid var(--line); }
.next-story a { color: var(--accent); font-weight: 700; text-decoration: none; }

@media (max-width: 980px) {
  .story-grid, .analysis-grid { grid-template-columns: 1fr; }
  .story-card { min-height: 280px; }
  .article-layout { grid-template-columns: minmax(0, 1fr) 260px; }
  .bookmarks { position: fixed; z-index: 70; inset: 0 auto 0 0; width: min(84vw, 320px); max-height: none; padding: 1.2rem; background: var(--surface); box-shadow: 12px 0 50px rgba(0,0,0,.18); transform: translateX(-105%); transition: transform .25s ease; }
  .bookmarks.is-open { transform: translateX(0); }
  .bookmark-close, .menu-toggle { display: inline-flex; }
  body.menu-open::after { content: ""; position: fixed; z-index: 65; inset: 0; background: rgba(25,24,21,.36); }
  .process-grid { grid-template-columns: 1fr; }
  .process-lead { position: static; }
}

@media (max-width: 700px) {
  .site-header { min-height: 60px; }
  .site-nav a:not(.home-link) { display: none; }
  .hero-grid, .section-heading { grid-template-columns: 1fr; }
  .hero { padding-top: 3.5rem; }
  .metric-row { grid-template-columns: repeat(2, 1fr); }
  .article-layout { grid-template-columns: 1fr; }
  .article-aside { position: static; max-height: none; display: grid; grid-template-columns: 1fr 1fr; }
  .recommend-grid { grid-template-columns: 1fr; }
  .article-body { padding: 1.3rem; border-radius: 18px; }
  .article-body p { text-align: left; font-size: 1rem; }
}

@media (max-width: 430px) {
  .wrap { width: min(100% - 1.25rem, 1180px); }
  .display { font-size: 2.5rem; }
  .article-aside { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}