:root {
  color-scheme: light;
  --ink: #242620;
  --muted: #66685f;
  --brand: #234f3b;
  --brand-dark: #173b2c;
  --brand-soft: #e7eadf;
  --paper: #fbfaf6;
  --soft: #f3f2ec;
  --line: #9b9c91;
  --warm: #f5f1e7;
  --amber: #9a6719;
  --max: 1220px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  color: var(--ink);
  background: var(--paper);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
#news, #price-list, #price-table, #factors, #advice, #wiki-list { scroll-margin-top: 92px; }
body { margin: 0; min-width: 320px; min-height: 100vh; background: var(--paper); color: var(--ink); line-height: 1.65; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3, strong { letter-spacing: -0.02em; }
.page-shell, .article-shell, .site-footer { width: min(100%, var(--max)); margin: 0 auto; padding-left: 18px; padding-right: 18px; }

.site-header { position: sticky; top: 0; z-index: 20; background: var(--paper); }
.header-inner { display: flex; align-items: center; min-height: 64px; width: min(100%, var(--max)); margin: 0 auto; padding: 0 18px; }
.brand { display: flex; align-items: center; gap: 10px; line-height: 1.1; white-space: nowrap; }
.brand strong { color: var(--brand-dark); font-family: "STKaiti", "KaiTi", "Songti SC", serif; font-size: 26px; font-weight: 900; letter-spacing: .08em; }
.brand span { color: #454a42; font-family: "STSong", "SimSun", "Songti SC", serif; font-size: 9px; line-height: 1.4; letter-spacing: .08em; white-space: nowrap; }
.desktop-nav { display: none; }
.header-date { display: none; }
.menu-button { margin-left: auto; border: 1px solid var(--brand-dark); border-radius: 2px; background: transparent; color: var(--brand-dark); padding: 7px 11px; font-size: 14px; font-weight: 750; cursor: pointer; }
.menu-button:focus-visible, a:focus-visible { outline: 3px solid rgba(23,107,69,.25); outline-offset: 3px; }
.mobile-nav { display: none; border-top: 1px solid var(--ink); padding: 8px 18px 15px; background: var(--paper); }
.mobile-nav.open { display: grid; }
.mobile-nav a { padding: 12px 2px; border-bottom: 1px solid var(--line); color: #34483d; font-weight: 650; }
.mobile-nav a.active { color: var(--brand); }

.newspaper-home { padding-top: 28px; padding-bottom: 76px; font-family: "STSong", "SimSun", "Songti SC", serif; }
.newspaper-grid { display: grid; grid-template-areas: "lead" "digest" "latest" "market" "wiki"; }
.newspaper-lead { grid-area: lead; padding: 10px 0 30px; border-bottom: 4px double var(--ink); }
.newspaper-kicker { margin-bottom: 14px; color: var(--brand-dark); font-size: 13px; font-weight: 700; letter-spacing: .12em; }
.newspaper-lead h1 { margin-bottom: 16px; font-family: "STSong", "SimSun", "Songti SC", serif; font-size: clamp(30px, 8.5vw, 40px); font-weight: 800; line-height: 1.32; letter-spacing: -.03em; }
.newspaper-lead > p:not(.newspaper-kicker) { color: #34372f; font-family: "STSong", "SimSun", "Songti SC", serif; font-size: 16px; line-height: 2; }
.newspaper-meta { display: grid; gap: 4px; margin-top: 22px; padding-top: 12px; border-top: 1px solid #718077; color: var(--muted); font-size: 11px; }
.market-observe { grid-area: market; padding: 26px 0; border-bottom: 1px solid var(--line); }
.market-observe h2, .ledger-heading h2 { margin-bottom: 18px; padding-bottom: 7px; border-bottom: 4px double var(--ink); font-family: "STSong", "SimSun", "Songti SC", serif; font-size: 21px; }
.market-observe p { color: #3f5047; font-family: "STSong", "SimSun", "Songti SC", serif; font-size: 15px; line-height: 1.9; }
.market-observe small { color: var(--muted); }
.latest-ledger { grid-area: latest; padding: 26px 0; border-bottom: 1px solid var(--line); }
.ledger-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; }
.ledger-heading h2 { flex: 1; }
.ledger-heading > a { color: var(--brand); font-size: 12px; }
.ledger-list { border-top: 0; }
.ledger-list > a { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 12px; padding: 13px 0; border-bottom: 1px dotted #aab5af; }
.ledger-list strong { font-family: "STSong", "SimSun", "Songti SC", serif; font-size: 15px; line-height: 1.45; }
.ledger-list time { color: var(--muted); font-size: 12px; }
.ledger-list a:hover strong { color: var(--brand); }
.price-digest { grid-area: digest; display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); border-top: 4px double var(--ink); border-bottom: 4px double var(--ink); }
.price-digest > a { display: grid; grid-template-columns: 1fr auto; gap: 4px 8px; padding: 15px 12px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.price-digest > a:nth-child(2n) { border-right: 0; }
.price-digest > a:nth-last-child(-n+2) { border-bottom: 0; }
.price-digest strong { align-self: center; color: var(--brand-dark); font-family: "STSong", "SimSun", "Songti SC", serif; font-size: 21px; }
.price-digest span { display: grid; text-align: right; }
.price-digest span small { color: var(--muted); font-size: 10px; }
.price-digest b { color: #a33b2e; font-size: 15px; }
.price-digest em { grid-column: 2; color: var(--ink); font-size: 11px; font-style: normal; text-align: right; }
.price-digest > a > small { grid-column: 1 / -1; color: var(--muted); font-size: 10px; }
.wiki-ledger { grid-area: wiki; padding-top: 28px; padding-bottom: 24px; }
.wide-heading { display: flex; align-items: baseline; gap: 16px; margin-bottom: 10px; border-bottom: 4px double var(--ink); }
.wide-heading h2 { margin: 0; padding-bottom: 7px; color: var(--brand-dark); font-family: "STSong", "SimSun", "Songti SC", serif; font-size: 23px; }
.wide-heading a { margin-left: auto; color: var(--brand); font-size: 12px; }
.wiki-columns { display: grid; }
.wiki-column { padding: 18px 0 24px; border-bottom: 1px solid var(--line); }
.wiki-column h3 { margin-bottom: 8px; font-family: "STSong", "SimSun", "Songti SC", serif; font-size: 17px; }
.wiki-column > a:not(.more-link) { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 10px; padding: 7px 0; font-size: 13px; }
.wiki-column time { color: var(--muted); font-size: 11px; }
.wiki-column a:hover span { color: var(--brand); }
.more-link { display: inline-block; margin-top: 8px; color: var(--brand); font-size: 12px; font-weight: 750; }

.hero { padding-top: 34px; padding-bottom: 28px; }
.hero-copy { max-width: 940px; }
.eyebrow { margin-bottom: 9px; color: var(--brand); font-size: 12px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.hero h1 { margin-bottom: 14px; font-size: clamp(36px, 7vw, 54px); line-height: 1.12; letter-spacing: -.05em; }
.hero-summary { max-width: 660px; margin-bottom: 22px; color: #485a50; font-size: 16px; }
.hot-links { display: flex; flex-wrap: wrap; gap: 8px; }
.hot-links a { border: 1px solid var(--line); border-radius: 999px; background: var(--soft); padding: 7px 12px; color: #3d5045; font-size: 13px; }
.hot-links a:hover { border-color: var(--brand); color: var(--brand); }
.section-block { padding-top: 44px; padding-bottom: 48px; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 16px; margin-bottom: 22px; }
.section-heading h2 { margin: 0; font-size: clamp(25px, 7vw, 34px); line-height: 1.2; }
.section-link { flex: 0 0 auto; border-bottom: 1px solid var(--brand); color: var(--brand); font-size: 14px; font-weight: 750; }
.feature-layout { display: grid; gap: 16px; }
.lead-card { display: block; min-height: 340px; border-radius: 18px; background: var(--ink); color: var(--paper); padding: 25px; }
.badge { display: inline-block; border-radius: 999px; background: #28513d; padding: 6px 10px; color: #dcece3; font-size: 12px; font-weight: 750; }
.lead-card h3 { margin: 48px 0 14px; font-size: 27px; line-height: 1.32; }
.lead-card > p { color: #c5d0ca; }
.lead-data { display: grid; grid-template-columns: auto 1fr auto; gap: 10px; align-items: end; margin-top: 28px; padding-top: 18px; border-top: 1px solid #40534a; }
.lead-data strong { font-size: 34px; line-height: 1; }
.lead-data span, .lead-data time { color: #bac9c1; font-size: 12px; line-height: 1.35; }
.story-list { border-top: 1px solid var(--line); }
.story-row { display: grid; grid-template-columns: 62px minmax(0,1fr) auto; gap: 12px; align-items: start; padding: 17px 0; border-bottom: 1px solid var(--line); }
.story-tag { color: var(--brand); font-size: 12px; font-weight: 800; }
.story-body { display: grid; gap: 5px; }
.story-body strong { font-size: 16px; line-height: 1.45; }
.story-body small, .story-row time { color: var(--muted); font-size: 12px; }
.story-row:hover strong { color: var(--brand); }

.soft-section { background: var(--soft); padding: 54px 0; }
.category-grid { display: grid; gap: 10px; }
.category-card { display: grid; min-height: 145px; border: 1px solid var(--line); border-radius: 15px; background: var(--paper); padding: 18px; }
.category-card small { justify-self: end; color: var(--brand); font-weight: 750; }
.category-card strong { align-self: end; font-size: 19px; }
.category-card span { color: var(--muted); font-size: 13px; }
.category-card:hover { border-color: #9ec4ad; box-shadow: 0 12px 32px rgba(27,71,48,.08); }
.region-section { border-bottom: 1px solid var(--line); }
.region-links { display: grid; grid-template-columns: repeat(2,1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.region-links a { display: grid; gap: 3px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 16px; font-weight: 750; }
.region-links span { color: var(--muted); font-size: 11px; font-weight: 500; }
.region-links a:hover { background: var(--brand-soft); color: var(--brand); }
.knowledge-grid { display: grid; gap: 12px; }
.knowledge-card { border: 1px solid var(--line); border-radius: 16px; padding: 20px; }
.knowledge-card > span { color: var(--brand); font-size: 12px; font-weight: 800; }
.knowledge-card h3 { margin: 32px 0 10px; font-size: 19px; line-height: 1.45; }
.knowledge-card p { color: var(--muted); font-size: 14px; }
.knowledge-card small { color: #78867f; }
.knowledge-card:hover { background: var(--soft); }
.news-strip { padding-top: 44px; padding-bottom: 54px; }
.news-lines { border-top: 1px solid var(--line); }
.news-lines a { display: grid; gap: 6px; padding: 17px 0; border-bottom: 1px solid var(--line); }
.news-lines strong { line-height: 1.5; }
.news-lines span { color: var(--muted); font-size: 12px; }

.page-intro { display: grid; gap: 22px; padding-top: 46px; padding-bottom: 35px; border-bottom: 1px solid var(--line); }
.page-intro h1 { margin-bottom: 12px; font-size: clamp(28px, 6vw, 40px); line-height: 1.22; letter-spacing: -.035em; }
.page-intro p:not(.eyebrow) { max-width: 650px; margin-bottom: 0; color: var(--muted); }
.update-card { display: grid; align-content: center; border-left: 3px solid var(--brand); background: var(--soft); padding: 18px; }
.update-card span, .update-card small { color: var(--muted); font-size: 12px; }
.update-card strong { margin: 4px 0; color: var(--brand); font-size: 21px; }
.filter-section { display: grid;align-items: start; gap: 18px; padding-top: 24px; padding-bottom: 24px; border-bottom: 1px solid var(--line); }
.filter-section > div { display: grid; gap: 9px;align-content: start;}
.filter-section strong { font-size: 13px; }
.filter-section nav { display: flex; flex-wrap: wrap; gap: 7px; }
.filter-section a { border-radius: 999px; background: var(--soft); padding: 6px 11px; color: #495b51; font-size: 13px; }
.filter-section a:hover { background: var(--brand-soft); color: var(--brand); }
.filter-section a.active { background: var(--brand); color: var(--paper); }
.pagination { display: flex; justify-content: center; gap: 7px; margin-top: 28px; }
.pagination a { border: 1px solid var(--line); border-radius: 9px; padding: 7px 12px; }
.pagination a.active { border-color: var(--brand); background: var(--brand); color: var(--paper); }
.pagination span.active { border: 1px solid var(--brand); border-radius: 9px; background: var(--brand); color: var(--paper); padding: 7px 12px; }
.empty-state { padding: 42px 0; color: var(--muted); }
.editorial-note { display: grid; gap: 8px; margin-bottom: 54px; border-radius: 15px; background: var(--warm); padding-top: 22px; padding-bottom: 22px; }
.editorial-note strong { color: var(--amber); }
.editorial-note p { margin-bottom: 0; color: #625a48; }

.article-shell { padding-top: 22px; }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 28px; color: var(--muted); font-size: 12px; }
.breadcrumb a:hover { color: var(--brand); }
.article-layout { display: grid; gap: 32px; }
.article-content { min-width: 0; }
.article-header { padding-bottom: 24px; border-bottom: 1px solid var(--line); }
.article-header h1 { margin-bottom: 18px; font-size: clamp(28px, 6vw, 40px); line-height: 1.3; letter-spacing: -.03em; }
.article-meta { display: flex; flex-wrap: wrap; gap: 10px 18px; color: var(--muted); font-size: 12px; }
.article-content > p { color: #3e5046; font-size: 16px; line-height: 1.9; }
.article-content h2 { margin: 38px 0 14px; font-size: 22px; }
.direct-answer { margin: 24px 0; border-left: 4px solid var(--brand); background: var(--brand-soft); padding: 18px; }
.direct-answer strong { color: var(--brand); }
.direct-answer p { margin: 6px 0 0; color: #324b3d; }
.direct-answer b { color: var(--brand-dark); }
.table-scroll { overflow-x: auto; margin: 14px 0 26px; border: 1px solid var(--line); border-radius: 12px; }
table { width: 100%; min-width: 660px; border-collapse: collapse; background: var(--paper); font-size: 14px; }
caption { padding: 12px 14px; background: var(--soft); color: var(--muted); text-align: left; font-size: 12px; }
th, td { padding: 12px 14px; border-bottom: 1px solid var(--line); text-align: left; }
th { background: #f8faf9; color: #425349; font-size: 12px; }
tbody tr:last-child td { border-bottom: 0; }
.factor-grid { display: grid; gap: 10px; }
.factor-grid div { display: grid; gap: 4px; border: 1px solid var(--line); border-radius: 12px; padding: 15px; }
.factor-grid span { color: var(--muted); font-size: 13px; }
.advice-list { display: grid; gap: 11px; padding-left: 22px; color: #3e5046; }
.source-note { margin-top: 36px; border-radius: 14px; background: var(--soft); padding: 18px; }
.source-note strong { font-size: 14px; }
.source-note p { margin: 6px 0 0; color: var(--muted); font-size: 13px; }
.article-side { display: grid; align-content: start; gap: 12px; }
.side-card { display: grid; gap: 10px; border: 1px solid var(--line); border-radius: 14px; padding: 17px; }
.side-card > span { color: var(--muted); font-size: 12px; font-weight: 750; }
.side-card a { color: #374b40; font-size: 14px; }
.side-card a:hover { color: var(--brand); }
.side-emphasis { border-color: #bad6c5; background: var(--brand-soft); }
.side-emphasis p { margin: 0; color: #4d6658; font-size: 13px; }
.side-emphasis a { color: var(--brand); font-weight: 750; }
.related-section { padding-top: 54px; padding-bottom: 54px; }

.baike-intro { border-bottom: 0; }
.topic-grid { display: grid; gap: 10px; padding-bottom: 24px; }
.topic-grid a { min-height: 165px; border-radius: 15px; background: var(--ink); color: var(--paper); padding: 20px; }
.topic-grid span { color: #9eb7aa; font-size: 12px; }
.topic-grid strong { display: block; margin-top: 28px; font-size: 21px; }
.topic-grid p { margin: 5px 0 0; color: #bfcac4; font-size: 13px; }
.wiki-list { border-top: 1px solid var(--line); }
.wiki-list > a { display: grid; grid-template-columns: 34px minmax(0,1fr); gap: 12px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.wiki-index { color: #9aa8a0; font-size: 12px; }
.wiki-list small { color: var(--brand); font-weight: 750; }
.wiki-list h2 { margin: 4px 0 7px; font-size: 17px; line-height: 1.5; }
.wiki-list p { margin: 0; color: var(--muted); font-size: 13px; }
.wiki-list time { grid-column: 2; color: #849188; font-size: 12px; }
.wiki-list a:hover h2 { color: var(--brand); }

.site-footer { border-top: 1px solid var(--line); padding-top: 28px; padding-bottom: 28px; }
.footer-main { display: grid; gap: 22px; }
.footer-brand { color: var(--brand); font-size: 20px; }
.footer-main p { margin: 5px 0 0; color: var(--muted); font-size: 13px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 10px 18px; font-size: 13px; }
.footer-links a:hover { color: var(--brand); }
.footer-friends { display: flex; flex-wrap: wrap; gap: 7px 16px; margin-top: 20px; padding-top: 14px; border-top: 1px solid var(--line); color: #727b75; font-size: 11px; }
.footer-friends span { color: #4d5d54; font-weight: 600; }
.footer-friends a:hover { color: var(--brand); text-decoration: underline; }
.footer-registration { display: flex; flex-wrap: wrap; gap: 7px 18px; margin-top: 10px; color: #696d65; font-size: 11px; }
.footer-registration a:hover { color: var(--brand); text-decoration: underline; }

@media (min-width: 680px) {
  .page-shell, .article-shell, .site-footer { padding-left: 24px; padding-right: 24px; }
  .header-inner { padding-left: 24px; padding-right: 24px; }
  .category-grid { grid-template-columns: repeat(2,1fr); }
  .region-links { grid-template-columns: repeat(4,1fr); }
  .knowledge-grid { grid-template-columns: repeat(3,1fr); }
  .factor-grid { grid-template-columns: repeat(2,1fr); }
  .topic-grid { grid-template-columns: repeat(3,1fr); }
  .wiki-list > a { grid-template-columns: 44px minmax(0,1fr) 90px; align-items: start; }
  .wiki-list time { grid-column: 3; text-align: right; }
  .footer-main { grid-template-columns: 1fr auto; align-items: end; }
  .newspaper-meta { grid-template-columns: 1fr auto; }
  .price-digest { grid-template-columns: repeat(4, minmax(0,1fr)); }
  .price-digest > a { border-bottom: 0; }
  .price-digest > a:nth-child(2n) { border-right: 1px solid var(--line); }
  .price-digest > a:last-child { border-right: 0; }
  .wiki-columns { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .wiki-column { padding: 16px; border-right: 1px solid var(--line); }
  .wiki-column:nth-child(2n) { border-right: 0; }
}

@media (min-width: 900px) {
  .page-shell, .article-shell, .site-footer { width: 85%; max-width: none; }
  .header-inner { width: 85%; max-width: none; }
  .header-inner { min-height: 72px; }
  .brand { gap: 16px; }
  .brand strong { font-size: 44px; }
  .brand span { max-width: none; font-size: 12px; white-space: nowrap; }
  .desktop-nav { display: flex; align-items: center; gap: 28px; margin-left: auto; font-size: 14px; font-weight: 650; }
  .desktop-nav a { padding: 7px 11px; border: 0; }
  .desktop-nav a.active { background: var(--brand-dark); color: var(--paper); }
  .desktop-nav a:hover:not(.active) { background: var(--brand-soft); color: var(--brand-dark); }
  .menu-button, .mobile-nav { display: none !important; }
  .header-date { display: block; order: 2; margin-left: auto; color: #4a5b51; font-family: "STSong", "SimSun", "Songti SC", serif; font-size: 13px; }
  .desktop-nav { order: 3; margin-left: 48px; }
  .newspaper-home { padding-top: 28px; }
  .newspaper-grid { grid-template-columns: minmax(0,4.125fr) minmax(0,3.75fr) minmax(0,4.125fr); grid-template-areas: "lead market latest" "digest digest digest" "wiki wiki wiki"; }
  .newspaper-lead, .market-observe, .latest-ledger { min-height: 465px; padding-top: 0; padding-bottom: 26px; border-bottom: 0; }
  .newspaper-lead { padding-right: 32px; }
  .newspaper-lead h1 { font-size: 40px; line-height: 1.38; }
  .newspaper-lead > p:not(.newspaper-kicker) { max-width: 500px; }
  .market-observe { padding-left: 26px; padding-right: 26px; border-left: 1px solid #5f625a; }
  .market-observe { display: flex; flex-direction: column; justify-content: flex-start; padding-bottom: 0; }
  .latest-ledger { padding-left: 26px; border-left: 1px solid #5f625a; }
  .price-digest { margin-top: 0; }
  .price-digest > a { grid-template-columns: auto 1fr auto; align-items: center; padding: 15px 18px; }
  .price-digest span { text-align: left; }
  .price-digest em { grid-column: auto; font-size: 12px; }
  .price-digest > a > small { grid-column: 2 / 4; }
  .wiki-columns { grid-template-columns: repeat(4, minmax(0,1fr)); }
  .wiki-column { min-height: 350px; border-right: 1px solid #74776e; border-bottom: 0; }
  .wiki-column:nth-child(2n) { border-right: 1px solid #74776e; }
  .wiki-column:last-child { border-right: 0; }
  .hero { padding-top: 52px; padding-bottom: 42px; }
  .hero-summary { font-size: 17px; }
  .feature-layout { grid-template-columns: minmax(0,.9fr) minmax(420px,1.1fr); gap: 32px; }
  .lead-card { padding: 30px; }
  .story-row { grid-template-columns: 70px minmax(0,1fr) 48px; padding: 20px 0; }
  .story-body strong { font-size: 17px; }
  .category-grid { grid-template-columns: repeat(3,1fr); }
  .news-lines a { grid-template-columns: 1fr auto; align-items: center; }
  .page-intro { grid-template-columns: minmax(0,1fr) 300px; align-items: end; padding-top: 70px; padding-bottom: 46px; }
  .filter-section { grid-template-columns: 1fr 1fr; padding-top: 28px; padding-bottom: 28px; }
  .article-shell { padding-top: 30px; }
  .article-layout { grid-template-columns: minmax(0,1fr) 270px; gap: 56px; }
  .article-side { position: sticky; top: 102px; }
  .article-content > p { font-size: 17px; }
  .related-section { width: calc(100% - 326px); }
}

@media (min-width: 1100px) {
  .page-shell, .article-shell, .site-footer { padding-left: 0; padding-right: 0; }
  .header-inner { padding-left: 0; padding-right: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}