:root {
  color-scheme: light;
  --color-bg: #f7f4ed;
  --color-surface: #eee9df;
  --color-surface-raised: #fffdf8;
  --color-text: #282720;
  --color-muted: #6f6a60;
  --color-subtle: #9a9388;
  --color-border: #d9d1c4;
  --color-accent: #b77924;
  --color-accent-deep: #895617;
  --color-accent-soft: #f2e2c5;
  --color-success: #27764a;
  --shadow-card: 0 18px 45px rgb(63 48 25 / 12%);
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", SimSun, serif;
  --font-sans: Inter, "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --content-width: 1180px;
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--color-bg); color: var(--color-text); font-family: var(--font-sans); line-height: 1.75; }
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
a:focus-visible, button:focus-visible { outline: 3px solid var(--color-accent); outline-offset: 3px; }
[hidden] { display: none !important; }
.skip-link { position: fixed; left: 16px; top: -60px; z-index: 20; padding: 8px 14px; border-radius: var(--radius-sm); background: var(--color-text); color: var(--color-bg); }
.skip-link:focus { top: 12px; }
.shell { width: min(calc(100% - 64px), var(--content-width)); margin-inline: auto; }
.site-header { min-height: 76px; padding: 0 max(32px, calc((100vw - var(--content-width)) / 2)); border-bottom: 1px solid var(--color-border); display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-family: var(--font-serif); font-size: 19px; font-weight: 700; letter-spacing: .08em; }
.brand small { padding-left: 10px; border-left: 1px solid var(--color-border); color: var(--color-subtle); font-family: var(--font-sans); font-size: 10px; font-weight: 500; letter-spacing: .14em; text-transform: uppercase; }
.brand-mark { width: 34px; height: 34px; border: 1px solid color-mix(in srgb, var(--color-accent) 52%, var(--color-border)); border-radius: 10px; display: inline-grid; place-items: center; color: var(--color-accent); font-family: var(--font-sans); }
.site-nav { display: flex; align-items: center; gap: 28px; font-size: 14px; color: var(--color-muted); }
.site-nav a { position: relative; padding-block: 24px; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--color-text); }
.site-nav a[aria-current="page"]::after { content: ""; position: absolute; inset: auto 0 -1px; height: 2px; background: var(--color-accent); }
.hero { min-height: 650px; padding-block: 90px 110px; display: grid; grid-template-columns: minmax(0, 1fr) minmax(420px, .86fr); align-items: center; gap: 9%; }
.eyebrow { margin: 0 0 14px; color: var(--color-accent-deep); font-size: 12px; font-weight: 700; letter-spacing: .17em; text-transform: uppercase; }
.hero h1, .page-heading h1 { margin: 0; font-family: var(--font-serif); font-weight: 600; line-height: 1.13; letter-spacing: -.045em; }
.hero h1 { font-size: clamp(58px, 7vw, 92px); }
.hero-lead { max-width: 600px; margin: 28px 0 0; color: var(--color-muted); font-family: var(--font-serif); font-size: 20px; line-height: 1.9; }
.button-row, .release-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: 32px; }
.button { min-height: 44px; padding: 9px 20px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); display: inline-flex; align-items: center; justify-content: center; background: transparent; color: var(--color-text); cursor: pointer; font-weight: 600; transition: background-color .18s ease, border-color .18s ease, transform .18s ease; }
.button:hover { transform: translateY(-1px); border-color: var(--color-accent); }
.button-primary { border-color: var(--color-accent-deep); background: var(--color-accent-deep); color: var(--color-surface-raised); }
.button-primary:hover { background: var(--color-accent); }
.button-quiet { background: var(--color-surface-raised); }
.button[aria-disabled="true"], .button:disabled { border-color: var(--color-border); background: var(--color-surface); color: var(--color-subtle); cursor: not-allowed; transform: none; }
.availability { min-height: 28px; margin-top: 18px; color: var(--color-subtle); font-size: 13px; }
.manuscript-preview { min-height: 430px; border: 1px solid var(--color-border); border-radius: var(--radius-lg); display: grid; grid-template-columns: 64px 1fr; overflow: hidden; background: var(--color-surface-raised); box-shadow: var(--shadow-card); transform: rotate(1.5deg); }
.preview-rail { padding: 28px 18px; border-right: 1px solid var(--color-border); display: flex; flex-direction: column; align-items: center; gap: 24px; background: var(--color-surface); }
.preview-rail span { width: 18px; height: 18px; border: 1px solid var(--color-subtle); border-radius: 6px; }
.preview-rail span:nth-child(2) { border-color: var(--color-accent); background: var(--color-accent-soft); }
.preview-page { padding: 70px 54px; }
.preview-kicker { color: var(--color-accent); font-size: 12px; letter-spacing: .14em; }
.preview-title { margin: 20px 0 45px; font-family: var(--font-serif); font-size: clamp(28px, 4vw, 44px); }
.preview-line { width: 82%; height: 7px; margin: 20px 0; border-radius: 10px; background: var(--color-surface); }
.preview-line.long { width: 100%; }
.preview-line.medium { width: 62%; }
.preview-note { margin-top: 72px; padding-top: 18px; border-top: 1px solid var(--color-border); color: var(--color-subtle); font-size: 12px; letter-spacing: .12em; }
.section { padding-block: 100px; }
.section-heading { max-width: 660px; margin-bottom: 42px; }
.section-heading h2, .trust-panel h2, .article-page h2 { margin: 0; font-family: var(--font-serif); font-size: clamp(32px, 4vw, 48px); line-height: 1.3; }
.section-heading > p:last-child { color: var(--color-muted); }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature-card { min-height: 275px; padding: 30px; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface-raised); }
.feature-index { color: var(--color-accent); font-size: 12px; letter-spacing: .14em; }
.feature-card h3 { margin: 74px 0 12px; font-family: var(--font-serif); font-size: 25px; }
.feature-card p { margin: 0; color: var(--color-muted); }
.trust-panel { margin-bottom: 100px; padding-inline: 54px; border-radius: var(--radius-lg); display: grid; grid-template-columns: 1fr 1fr; gap: 80px; background: var(--color-text); color: var(--color-bg); }
.trust-panel .eyebrow { color: var(--color-accent-soft); }
.trust-copy { color: color-mix(in srgb, var(--color-bg) 75%, transparent); }
.text-link { color: var(--color-accent-soft); font-weight: 600; }
.site-footer { padding-block: 30px 42px; border-top: 1px solid var(--color-border); display: grid; grid-template-columns: auto 1fr; align-items: start; gap: 10px 50px; color: var(--color-subtle); font-size: 12px; }
.site-footer strong { margin-right: 14px; color: var(--color-text); font-family: var(--font-serif); font-size: 17px; }
.footer-links { justify-self: end; display: flex; flex-wrap: wrap; gap: 22px; }
.footer-links a:hover, .footer-links a[aria-current="page"] { color: var(--color-text); }
.site-footer > p { grid-column: 1 / -1; margin: 8px 0 0; }
.page-main, .article-page { min-height: calc(100vh - 190px); padding-block: 76px 100px; }
.page-heading { max-width: 760px; margin-bottom: 50px; }
.page-heading h1 { font-size: clamp(48px, 6vw, 72px); }
.page-heading > p:last-child { color: var(--color-muted); font-size: 17px; }
.notice { margin-bottom: 22px; padding: 14px 18px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); background: var(--color-surface); color: var(--color-muted); font-size: 14px; }
.release-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.release-card { padding: 30px; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface-raised); box-shadow: 0 8px 26px rgb(63 48 25 / 5%); }
.release-card.release-empty { box-shadow: none; }
.release-card-head { display: flex; justify-content: space-between; align-items: start; gap: 24px; }
.release-card-head h2 { margin: 8px 0 0; font-family: var(--font-serif); font-size: 34px; }
.release-card-head strong { color: var(--color-accent-deep); }
.channel-badge { padding: 4px 8px; border-radius: 99px; background: var(--color-accent-soft); color: var(--color-accent-deep); font-size: 11px; }
.channel-badge.quiet { background: var(--color-surface); color: var(--color-muted); }
.release-card > p, .release-card li { color: var(--color-muted); }
.release-card ul { min-height: 78px; padding-left: 20px; }
.release-meta { margin: 28px 0 0; border-block: 1px solid var(--color-border); }
.release-meta div { padding: 10px 0; display: flex; justify-content: space-between; gap: 20px; }
.release-meta div + div { border-top: 1px solid var(--color-border); }
.release-meta dt { color: var(--color-subtle); }
.release-meta dd { margin: 0; text-align: right; }
.hash { margin-top: 18px; padding: 10px; display: block; overflow-wrap: anywhere; border-radius: 8px; background: var(--color-surface); color: var(--color-muted); font-size: 11px; }
.compact-section { padding-bottom: 0; }
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.steps-grid > div { padding: 24px 0; border-top: 1px solid var(--color-border); }
.steps-grid span, .help-number { color: var(--color-accent); font-size: 12px; font-weight: 700; }
.steps-grid h3 { font-family: var(--font-serif); font-size: 22px; }
.steps-grid p { color: var(--color-muted); }
.article-page { max-width: 860px; }
.article-page section { margin: 0 0 28px; padding: 30px; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface-raised); }
.article-page section h2 { font-size: 28px; }
.article-page section p { color: var(--color-muted); }
.document-note { margin-top: 42px; color: var(--color-subtle); font-size: 13px; }
.rights-owner { border-left: 3px solid var(--color-accent) !important; }
.help-page section { position: relative; padding-left: 74px; }
.help-number { position: absolute; left: 30px; top: 35px; }
.help-contact { margin-top: 54px; padding: 38px; border-radius: var(--radius-md); background: var(--color-text); color: var(--color-bg); }
.help-contact h2 { margin: 0; font-family: var(--font-serif); font-size: 32px; }
.help-contact p { color: color-mix(in srgb, var(--color-bg) 72%, transparent); }
.error-page { min-height: 100vh; display: grid; place-items: center; text-align: center; }
.error-page main { width: min(calc(100% - 40px), 540px); padding: 50px; border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: var(--color-surface-raised); }
.error-page .brand-mark { margin: 0 auto 26px; }
.error-page h1 { font-family: var(--font-serif); font-size: 36px; }
.error-page p:not(.eyebrow) { color: var(--color-muted); }
.error-page .button { margin-top: 18px; }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; gap: 70px; }
  .manuscript-preview { width: min(100%, 620px); }
  .feature-grid, .release-grid { grid-template-columns: 1fr; }
  .trust-panel { grid-template-columns: 1fr; gap: 24px; }
}

@media (max-width: 680px) {
  .shell { width: min(calc(100% - 36px), var(--content-width)); }
  .site-header { min-height: auto; padding: 18px; align-items: flex-start; flex-direction: column; gap: 4px; }
  .brand small { display: none; }
  .site-nav { width: 100%; gap: 18px; overflow-x: auto; white-space: nowrap; }
  .site-nav a { padding-block: 12px; }
  .hero { min-height: auto; padding-block: 64px 80px; }
  .hero h1 { font-size: clamp(54px, 19vw, 72px); }
  .hero-lead { font-size: 17px; }
  .manuscript-preview { min-height: 340px; grid-template-columns: 48px 1fr; }
  .preview-rail { padding-inline: 12px; }
  .preview-page { padding: 48px 28px; }
  .section { padding-block: 72px; }
  .feature-card { min-height: 230px; }
  .feature-card h3 { margin-top: 45px; }
  .trust-panel { width: 100%; margin-bottom: 70px; padding: 58px 28px; border-radius: 0; }
  .site-footer { grid-template-columns: 1fr; }
  .footer-links { justify-self: start; }
  .page-main, .article-page { padding-block: 56px 76px; }
  .release-card { padding: 22px; }
  .release-card-head { flex-direction: column; gap: 4px; }
  .release-card ul { min-height: auto; }
  .steps-grid { grid-template-columns: 1fr; }
  .article-page section, .help-contact { padding: 24px; }
  .help-page section { padding-left: 58px; }
  .help-number { left: 22px; top: 29px; }
}

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