:root {
  --ink: #11110f;
  --ink-soft: #34322e;
  --paper: #f7f3ec;
  --paper-deep: #ebe3d6;
  --muted: #68635d;
  --red: #b8201c;
  --white: #fffaf1;
  --line: rgba(17, 17, 15, 0.14);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { display: flex; flex-direction: column; min-height: 100svh; margin: 0; color: var(--ink); background: var(--paper); }
a { color: inherit; }

.site-header { position: fixed; z-index: 20; top: 0; left: 0; width: 100%; display: flex; align-items: center; justify-content: space-between; padding: 24px 32px; color: var(--white); background: linear-gradient(to bottom, rgba(8, 8, 7, .54), rgba(8, 8, 7, .08), transparent); transition: background 240ms ease, padding 240ms ease; }
.site-header.is-scrolled { padding-top: 16px; padding-bottom: 16px; background: rgba(15, 15, 13, .76); -webkit-backdrop-filter: blur(18px) saturate(115%); backdrop-filter: blur(18px) saturate(115%); }
.brand { display: flex; align-items: center; gap: 12px; min-width: 230px; text-decoration: none; }
.brand-icon { display: block; width: 34px; height: 34px; object-fit: contain; filter: drop-shadow(0 1px 10px rgba(0, 0, 0, .24)); }
.brand strong { display: block; font-family: Georgia, "Times New Roman", serif; font-size: 24px; line-height: 1; }
.brand small { display: block; margin-top: 5px; color: rgba(255, 250, 241, .68); font-size: 11px; }
.header-actions { display: flex; align-items: center; gap: 20px; }
.back-link { padding: 10px 0 5px; border-bottom: 1px solid rgba(255, 250, 241, .55); font-size: 12px; font-weight: 800; letter-spacing: .11em; text-decoration: none; text-transform: uppercase; }
.back-label-short { display: none; }
.lang-toggle { display: flex; gap: 5px; padding: 0; border: 0; color: var(--white); background: transparent; cursor: pointer; font-size: 12px; font-weight: 800; letter-spacing: .11em; text-transform: uppercase; }
.lang-toggle span:first-child { color: #ed453d; }
.lang-toggle.is-zh span:first-child { color: rgba(255, 250, 241, .66); }
.lang-toggle.is-zh span:last-child { color: #ed453d; }

.information-hero { min-height: min(520px, 64vh); display: flex; align-items: flex-end; padding: 170px clamp(24px, 9vw, 138px) 82px; color: var(--white); background-color: #201f1b; background-position: center; background-size: cover; }
.information-hero--contact { background-image: linear-gradient(110deg, rgba(10, 10, 8, .9), rgba(20, 19, 16, .36)), url("assets/information/contact-hero.jpg"); background-position: center 58%; }
.information-hero--terms { background-image: linear-gradient(110deg, rgba(10, 10, 8, .88), rgba(20, 19, 16, .42)), url("assets/information/terms-hero.jpg?v=20260812-01"); background-position: center 55%; }
.information-hero--privacy { background-image: linear-gradient(110deg, rgba(10, 10, 8, .84), rgba(20, 19, 16, .38)), url("assets/information/privacy-hero.jpg"); background-position: center 55%; }
.information-hero > div { max-width: 840px; }
.eyebrow, .section-label { margin: 0 0 18px; color: var(--red); font-size: 12px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.information-hero h1, .information-main h2 { margin: 0; font-family: Georgia, "Times New Roman", serif; font-weight: 400; letter-spacing: 0; }
.information-hero h1 { font-size: clamp(56px, 7.2vw, 104px); line-height: .96; }
.information-hero p:not(.eyebrow) { max-width: 620px; margin: 28px 0 0; color: rgba(255, 250, 241, .78); font-size: 18px; line-height: 1.65; }

main { flex: 1; }
.information-main { max-width: 1160px; margin: 0 auto; padding: clamp(78px, 10vw, 148px) clamp(24px, 7vw, 96px); }
.information-intro { max-width: 760px; margin-bottom: clamp(72px, 10vw, 136px); }
.information-intro h2 { font-size: clamp(40px, 5.1vw, 76px); line-height: 1.02; }
.information-intro p:not(.section-label) { max-width: 650px; margin: 28px 0 0; color: var(--ink-soft); font-size: 18px; line-height: 1.72; }
.information-grid { display: grid; grid-template-columns: minmax(180px, .44fr) minmax(0, 1fr); gap: 9vw; }
.information-grid > .section-label { padding-top: 8px; }
.information-content { min-width: 0; }
.information-content section { padding: 0 0 48px; margin-bottom: 48px; border-bottom: 1px solid var(--line); }
.information-content section:last-child { margin-bottom: 0; border-bottom: 0; }
.information-content h2 { font-size: clamp(34px, 3.5vw, 52px); line-height: 1.08; }
.information-content p, .information-content li { color: var(--ink-soft); font-size: 17px; line-height: 1.75; }
.information-content p { margin: 20px 0 0; }
.information-content p + p { margin-top: 14px; }
.information-content ul { padding: 0; margin: 24px 0 0; list-style: none; }
.information-content li { position: relative; padding: 0 0 0 22px; margin: 0 0 12px; }
.information-content li::before { position: absolute; top: .76em; left: 0; width: 5px; height: 5px; content: ""; background: var(--red); }
.contact-list { border-top: 1px solid var(--line); }
.contact-list div { display: grid; grid-template-columns: minmax(120px, .35fr) 1fr; gap: 24px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.contact-list span { color: var(--muted); font-size: 12px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.contact-list a { color: var(--ink); font-size: 17px; text-decoration-color: rgba(184, 32, 28, .6); text-underline-offset: 5px; }
.contact-list p { margin: 0; }
.contact-actions { display: flex; flex-wrap: wrap; gap: 28px; }
.contact-cta { display: inline-block; margin-top: 38px; font-size: 12px; font-weight: 800; letter-spacing: .11em; text-decoration: none; text-transform: uppercase; }
.contact-cta::after { display: block; width: 100%; height: 2px; margin-top: 10px; content: ""; background: var(--red); transform: scaleX(.38); transform-origin: left; transition: transform 420ms cubic-bezier(.22, 1, .36, 1); }
.contact-cta:hover::after, .contact-cta:focus-visible::after { transform: scaleX(1); }
.quiet-note { color: var(--muted) !important; font-size: 14px !important; }

.site-footer { display: flex; align-items: center; justify-content: center; gap: 28px; padding: 34px 32px; color: rgba(255, 250, 241, .7); background: var(--ink); text-align: center; }
.site-footer strong { color: var(--white); font-family: Georgia, "Times New Roman", serif; font-size: 20px; }
.site-footer a { color: var(--white); font-size: 12px; font-weight: 800; letter-spacing: .12em; text-decoration: none; text-transform: uppercase; }
.footer-links { display: flex; gap: 18px; align-items: center; }
.footer-links a { color: rgba(255, 250, 241, .78); font-size: 10px; letter-spacing: .1em; }

html:lang(zh-CN) body { font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", ui-sans-serif, system-ui, sans-serif; }
html:lang(zh-CN) .information-hero h1, html:lang(zh-CN) .information-main h2, html:lang(zh-CN) .brand strong { font-family: "Songti SC", "Noto Serif CJK SC", "Source Han Serif SC", "STSong", serif; }
html:lang(zh-CN) .information-hero h1 { line-height: 1.12; }
html:lang(zh-CN) .eyebrow, html:lang(zh-CN) .section-label { font-size: 13px; font-weight: 700; letter-spacing: .1em; text-transform: none; }
html:lang(zh-CN) .information-content p, html:lang(zh-CN) .information-content li, html:lang(zh-CN) .information-intro p:not(.section-label) { line-height: 1.9; }

@media (max-width: 800px) {
  .site-header { padding: 18px 20px; }
  .brand { min-width: auto; }
  .header-actions { gap: 14px; }
  .back-label-full { display: none; }
  .back-label-short { display: inline; }
  .information-hero { min-height: 54svh; padding: 138px 24px 58px; }
  .information-hero h1 { font-size: clamp(46px, 12vw, 64px); line-height: 1.04; }
  .information-hero p:not(.eyebrow) { font-size: 16px; }
  .information-main { padding: 72px 24px 92px; }
  .information-grid { grid-template-columns: 1fr; gap: 34px; }
  .information-content section { padding-bottom: 38px; margin-bottom: 38px; }
  .information-content p, .information-content li { font-size: 16px; }
  .site-footer { align-items: flex-start; flex-direction: column; text-align: left; }
  .footer-links { flex-wrap: wrap; }
}

@media (max-width: 420px) {
  .brand { gap: 7px; }
  .brand-icon { width: 28px; height: 28px; }
  .brand strong { font-size: 18px; }
  .lang-toggle, .back-link { font-size: 10px; }
  .contact-list div { grid-template-columns: 1fr; gap: 8px; }
}

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