:root {
  --black: #080808;
  --panel: #11110f;
  --panel-2: #181711;
  --gold: #d7a93b;
  --gold-light: #f2d98b;
  --cream: #f5f1e8;
  --muted: #a8a398;
  --line: rgba(215, 169, 59, 0.28);
  --max: 1240px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--cream); color: #16140f; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif; line-height: 1.7; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.site-header { min-height: 84px; padding: 14px max(28px, calc((100% - var(--max)) / 2)); display: grid; grid-template-columns: 230px 1fr auto; gap: 28px; align-items: center; background: var(--black); color: var(--cream); border-bottom: 1px solid var(--line); position: relative; z-index: 5; }
.brand, .footer-brand { display: flex; align-items: center; gap: 12px; }
.brand-mark { display: grid; place-items: center; width: 48px; height: 48px; background: var(--gold); color: var(--black); font-size: 25px; font-weight: 900; border: 1px solid var(--gold-light); }
.brand b { display: block; font-size: 19px; letter-spacing: .16em; }
.brand small { display: block; color: var(--muted); font-size: 9px; letter-spacing: .18em; }
.main-nav { display: flex; justify-content: center; gap: clamp(18px, 2.6vw, 40px); font-size: 14px; }
.main-nav a { color: #d9d4c8; border-bottom: 1px solid transparent; }
.main-nav a:hover, .main-nav a:focus { color: var(--gold-light); border-color: var(--gold); }
.status-pill { border: 1px solid var(--line); border-radius: 100px; padding: 8px 14px; font-size: 12px; color: #d9d4c8; }
.status-pill span { display: inline-block; width: 7px; height: 7px; margin-right: 7px; background: #7db66c; border-radius: 50%; box-shadow: 0 0 0 4px rgba(125,182,108,.13); }
.safety-strip { min-height: 44px; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 18px; padding: 8px max(28px, calc((100% - var(--max)) / 2)); background: var(--gold); color: var(--black); font-size: 13px; }
.safety-strip strong { text-transform: uppercase; letter-spacing: .08em; }
.safety-strip a { font-weight: 800; border-bottom: 1px solid; }
main { min-height: 65vh; }
.hero { min-height: 690px; display: grid; grid-template-columns: 1.04fr .96fr; background: var(--black); color: var(--cream); }
.hero-copy { padding: 82px max(42px, calc((100vw - var(--max)) / 2)) 76px; padding-right: 60px; display: flex; flex-direction: column; justify-content: center; }
.hero-kicker { display: flex; justify-content: space-between; padding-bottom: 18px; border-bottom: 1px solid var(--line); color: var(--gold-light); font-size: 11px; letter-spacing: .18em; }
.hero h1 { margin: 34px 0 24px; max-width: 700px; font-size: clamp(52px, 6vw, 92px); line-height: .98; letter-spacing: -.055em; }
.hero h1 span { color: var(--gold); }
.hero-lead { max-width: 650px; color: #c9c3b8; font-size: 17px; }
.hero-actions { display: flex; gap: 12px; margin-top: 28px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 11px 22px; border: 1px solid var(--gold); font-weight: 800; font-size: 14px; }
.button.primary { background: var(--gold); color: var(--black); }
.button.ghost { color: inherit; background: transparent; }
.button:hover, .button:focus { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(215,169,59,.12); }
.trust-row { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 35px; color: #918d84; font-size: 12px; }
.hero-visual { position: relative; overflow: hidden; min-height: 560px; border-left: 1px solid var(--line); }
.hero-image { width: 100%; height: 100%; object-fit: cover; opacity: .88; }
.hero-visual::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(8,8,8,.3), transparent 40%), linear-gradient(0deg, rgba(8,8,8,.8), transparent 45%); pointer-events: none; }
.visual-panel { position: absolute; z-index: 2; left: 34px; bottom: 34px; width: min(360px, calc(100% - 68px)); padding: 20px; background: rgba(8,8,8,.9); border: 1px solid var(--line); }
.visual-panel span, .visual-panel small { display: block; color: var(--muted); font-size: 11px; }
.visual-panel strong { display: block; margin: 5px 0; color: var(--gold-light); letter-spacing: .12em; }
.visual-index { position: absolute; z-index: 2; top: 32px; right: 32px; display: grid; grid-template-columns: auto auto; gap: 3px 10px; padding: 14px 18px; background: var(--gold); color: var(--black); }
.visual-index b { font-size: 22px; line-height: 1.2; }
.visual-index span { font-size: 10px; align-self: center; }
.metrics-band { display: grid; grid-template-columns: repeat(4, 1fr); background: var(--gold); border-top: 1px solid #f1d27d; }
.metrics-band div { min-height: 120px; display: flex; align-items: center; gap: 15px; padding: 20px max(22px, calc((100vw - var(--max)) / 8)); border-right: 1px solid rgba(8,8,8,.22); }
.metrics-band strong { font-size: 35px; line-height: 1; }
.metrics-band span { font-size: 11px; line-height: 1.4; text-transform: uppercase; letter-spacing: .06em; }
.shell { width: min(var(--max), calc(100% - 56px)); margin-inline: auto; }
.section { padding-block: 96px; }
.section-heading { display: flex; justify-content: space-between; gap: 50px; align-items: end; margin-bottom: 38px; }
.section-heading h2, .two-column h2, .next-route h2 { margin: 5px 0 0; font-size: clamp(34px, 4vw, 56px); line-height: 1.05; letter-spacing: -.04em; }
.section-heading > p { max-width: 520px; margin: 0; color: #676257; }
.eyebrow { color: #777166; font-size: 10px; font-weight: 800; letter-spacing: .18em; text-transform: uppercase; }
.eyebrow.gold { color: #9d7418; }
.channel-grid { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid #bcb5a7; border-left: 1px solid #bcb5a7; }
.channel-card { min-height: 220px; display: grid; grid-template-columns: 60px 1fr auto; gap: 22px; padding: 35px; border-right: 1px solid #bcb5a7; border-bottom: 1px solid #bcb5a7; }
.channel-card:hover { background: #eee7d9; }
.channel-number { font-weight: 900; font-size: 18px; color: #9d7418; }
.channel-card h3 { margin: 8px 0; font-size: 28px; }
.channel-card p { margin: 0; max-width: 420px; color: #676257; }
.arrow { font-size: 22px; }
.dark-panel { width: min(1380px, calc(100% - 30px)); padding-inline: max(28px, calc((100% - var(--max)) / 2)); background: var(--black); color: var(--cream); }
.dark-panel .section-heading > p { color: var(--muted); }
.article-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.article-card { min-height: 330px; padding: 28px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); display: flex; flex-direction: column; }
.article-card:hover { background: var(--panel-2); }
.card-meta { display: flex; justify-content: space-between; color: var(--gold-light); font-size: 10px; letter-spacing: .06em; }
.article-card h3 { margin: 42px 0 12px; font-size: 23px; line-height: 1.35; }
.article-card p { margin: 0 0 30px; color: var(--muted); font-size: 14px; }
.text-link { margin-top: auto; color: var(--gold-light); font-weight: 800; font-size: 13px; }
.text-link.light { margin: 0; }
.science-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid #c6beaf; }
.science-grid article { padding: 30px 25px; border-right: 1px solid #c6beaf; }
.science-grid article:last-child { border: 0; }
.science-grid span { color: #9d7418; font-weight: 900; }
.science-grid h3 { font-size: 24px; }
.science-grid p { color: #676257; font-size: 14px; }
.callout { margin-top: 40px; display: grid; grid-template-columns: auto 1fr auto; gap: 26px; align-items: center; padding: 28px; background: var(--gold); }
.callout p { margin: 0; }
.callout a { font-weight: 900; border-bottom: 1px solid; }
.faq-list { border-top: 1px solid #bcb5a7; }
.faq-list details { border-bottom: 1px solid #bcb5a7; padding: 24px 0; }
.faq-list summary { cursor: pointer; font-size: 20px; font-weight: 800; }
.faq-list p { max-width: 800px; color: #676257; }
.sample-section { padding-top: 40px; }
.sample-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.sample-grid blockquote { margin: 0; padding: 30px; background: #e9e2d4; border-top: 4px solid var(--gold); }
.sample-grid blockquote p { font-size: 18px; }
.sample-grid footer { color: #777166; font-size: 11px; }
.site-footer { padding: 65px max(28px, calc((100% - var(--max)) / 2)) 24px; background: var(--black); color: var(--cream); }
.footer-brand strong { font-size: 20px; }
.footer-brand p { margin: 0; color: var(--muted); font-size: 12px; }
.footer-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 50px; margin: 50px 0; padding: 35px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.footer-grid div { display: flex; flex-direction: column; gap: 7px; }
.footer-grid a { color: #bbb5aa; font-size: 13px; }
.footer-label { margin-bottom: 8px; color: var(--gold-light); font-size: 10px; letter-spacing: .15em; }
.footer-bottom { display: flex; justify-content: space-between; color: #777269; font-size: 11px; }
.page-hero { min-height: 390px; padding: 85px max(28px, calc((100% - var(--max)) / 2)); display: flex; justify-content: space-between; gap: 50px; align-items: end; background: var(--black); color: var(--cream); }
.page-hero > div:first-child { max-width: 800px; }
.page-hero h1 { margin: 10px 0 20px; font-size: clamp(52px, 7vw, 92px); line-height: 1; letter-spacing: -.05em; }
.page-hero p { max-width: 720px; color: #bbb5aa; font-size: 17px; }
.hero-code { display: flex; gap: 15px; align-items: center; padding: 20px; border: 1px solid var(--line); }
.hero-code strong { color: var(--gold); font-size: 48px; line-height: 1; }
.hero-code span { color: var(--muted); font-size: 11px; }
.two-column { display: grid; grid-template-columns: 1.2fr .8fr; gap: 80px; align-items: start; }
.check-list { padding: 0; list-style: none; border-top: 1px solid #bbb5aa; }
.check-list li { padding: 18px 0; border-bottom: 1px solid #bbb5aa; font-size: 18px; }
.check-list li::before { content: "✓"; color: #9d7418; font-weight: 900; margin-right: 12px; }
.boundary-box { padding: 30px; background: var(--gold); }
.boundary-box strong { font-size: 20px; }
.next-route { padding-top: 65px; padding-bottom: 80px; border-top: 1px solid #bcb5a7; }
.next-route p { max-width: 700px; margin-bottom: 26px; color: #676257; }
.article-shell { width: min(1120px, calc(100% - 56px)); margin: 0 auto; padding-bottom: 100px; }
.breadcrumbs { display: flex; gap: 10px; padding: 28px 0; color: #777166; font-size: 12px; border-bottom: 1px solid #c9c1b2; }
.article-header { max-width: 930px; padding: 76px 0 60px; }
.article-header h1 { margin: 13px 0 25px; font-size: clamp(45px, 6vw, 76px); line-height: 1.1; letter-spacing: -.045em; }
.article-deck { max-width: 800px; font-size: 20px; color: #5f5a50; }
.byline { display: flex; align-items: center; gap: 13px; margin-top: 35px; }
.avatar { display: grid; place-items: center; width: 44px; height: 44px; background: var(--gold); color: var(--black); font-weight: 900; }
.byline a { display: block; font-weight: 900; }
.byline small { display: block; color: #777166; }
.article-layout { display: grid; grid-template-columns: minmax(0, 760px) 250px; gap: 80px; align-items: start; }
.article-body section { padding: 42px 0; border-top: 1px solid #c9c1b2; }
.article-body h2 { margin: 0 0 20px; font-size: 34px; letter-spacing: -.03em; }
.article-body > section > p { font-size: 17px; color: #514d45; }
.principle-list { list-style: none; padding: 0; }
.principle-list li { display: grid; grid-template-columns: 45px 1fr; padding: 18px 0; border-bottom: 1px solid #d3cbbd; }
.principle-list span { color: #9d7418; font-weight: 900; }
.principle-list p { margin: 0; font-size: 17px; }
.step-list { padding: 0; list-style: none; }
.step-list li { display: grid; grid-template-columns: 54px 1fr; gap: 18px; padding: 23px 0; }
.step-list > li > span { display: grid; place-items: center; width: 48px; height: 48px; background: var(--black); color: var(--gold-light); font-weight: 900; }
.step-list h3 { margin: 0 0 6px; font-size: 20px; }
.step-list p { margin: 0; color: #6a655c; }
.article-warning { margin-top: 25px; padding: 26px; background: var(--gold); }
.article-warning p { margin-bottom: 0; }
.article-tags { display: flex; gap: 8px; flex-wrap: wrap; padding-top: 25px; }
.article-tags span { padding: 7px 0; margin-right: 10px; font-weight: 800; }
.article-tags a, .role-chip { padding: 7px 12px; border: 1px solid #aaa294; font-size: 12px; }
.article-aside { position: sticky; top: 20px; }
.article-aside > div { display: flex; flex-direction: column; gap: 9px; padding: 22px; border: 1px solid #bcb5a7; }
.article-aside a { font-size: 13px; }
.article-aside .aside-status { margin-top: 15px; background: var(--black); color: var(--cream); border-color: var(--black); }
.aside-status span, .aside-status p { color: var(--muted); font-size: 11px; }
.tag-index-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid #bcb5a7; border-left: 1px solid #bcb5a7; }
.tag-index-card { min-height: 190px; padding: 25px; border-right: 1px solid #bcb5a7; border-bottom: 1px solid #bcb5a7; }
.tag-index-card:hover { background: var(--gold); }
.tag-index-card span { font-size: 20px; font-weight: 900; }
.tag-index-card p { color: #676257; font-size: 13px; }
.tag-index-card small { font-weight: 800; }
.author-grid { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid #bcb5a7; border-left: 1px solid #bcb5a7; }
.author-card { min-height: 310px; padding: 35px; border-right: 1px solid #bcb5a7; border-bottom: 1px solid #bcb5a7; }
.avatar.large { width: 64px; height: 64px; margin-bottom: 28px; font-size: 20px; }
.avatar.xlarge { width: 125px; height: 125px; flex: none; font-size: 32px; }
.author-card h2 { margin: 4px 0; font-size: 34px; }
.author-card p { max-width: 500px; color: #676257; }
.author-hero { justify-content: flex-start; align-items: center; }
.feature-grid { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid #bcb5a7; border-left: 1px solid #bcb5a7; }
.feature-block { min-height: 250px; padding: 34px; border-right: 1px solid #bcb5a7; border-bottom: 1px solid #bcb5a7; }
.feature-block > span { color: #9d7418; font-weight: 900; }
.feature-block h2 { margin: 26px 0 10px; font-size: 28px; }
.feature-block p { color: #676257; }
.legal-body { width: min(840px, calc(100% - 56px)); margin: 0 auto; padding: 75px 0 100px; }
.legal-body section { padding: 32px 0; border-top: 1px solid #bcb5a7; }
.legal-body h2 { font-size: 29px; }
.legal-body p { color: #5f5a50; }
@media (max-width: 1000px) {
  .site-header { grid-template-columns: 1fr auto; }
  .main-nav { grid-column: 1 / -1; order: 3; justify-content: flex-start; overflow-x: auto; padding-bottom: 5px; }
  .hero { grid-template-columns: 1fr; }
  .hero-copy { padding: 70px 35px; }
  .hero-visual { min-height: 470px; border-left: 0; border-top: 1px solid var(--line); }
  .metrics-band { grid-template-columns: repeat(2, 1fr); }
  .article-grid, .science-grid, .tag-index-grid { grid-template-columns: repeat(2, 1fr); }
  .article-layout { grid-template-columns: 1fr; }
  .article-aside { position: static; }
}
@media (max-width: 700px) {
  .site-header { padding: 14px 18px; }
  .status-pill { display: none; }
  .main-nav { gap: 20px; }
  .safety-strip { grid-template-columns: 1fr; padding: 12px 18px; gap: 3px; }
  .hero h1 { font-size: 48px; }
  .hero-actions, .section-heading, .footer-bottom { align-items: stretch; flex-direction: column; }
  .metrics-band, .channel-grid, .article-grid, .science-grid, .sample-grid, .footer-grid, .tag-index-grid, .author-grid, .feature-grid, .two-column { grid-template-columns: 1fr; }
  .shell, .article-shell, .legal-body { width: min(100% - 34px, var(--max)); }
  .section { padding-block: 65px; }
  .dark-panel { width: calc(100% - 14px); padding-inline: 17px; }
  .page-hero { min-height: 330px; padding: 60px 18px; flex-direction: column; align-items: flex-start; justify-content: flex-end; }
  .page-hero h1 { font-size: 50px; }
  .article-header { padding-top: 55px; }
  .article-header h1 { font-size: 42px; }
  .callout { grid-template-columns: 1fr; }
}