:root {
  --paper: #f7f0e5;
  --paper-soft: #fffaf2;
  --ink: #3d2115;
  --muted: #765f52;
  --red: #cf351f;
  --gold: #b68b4b;
  --line: #d9cbbb;
  --dark: #321c13;
  --serif: Georgia, "Songti SC", "Noto Serif SC", serif;
  --sans: "Avenir Next", "Noto Sans SC", "PingFang SC", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: .17;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='150' height='150' viewBox='0 0 150 150'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.72' numOctaves='3' stitchTiles='stitchTiles'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.08'/%3E%3C/svg%3E");
}
a { color: inherit; }
.skip { position: fixed; left: 16px; top: -70px; z-index: 50; padding: 12px 18px; color: white; background: var(--dark); }
.skip:focus { top: 12px; }

.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 12px max(24px, calc((100vw - 1160px) / 2));
  background: #f7f0e5ed;
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 11px; text-decoration: none; font: 700 20px var(--serif); }
.mark {
  width: 36px;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  color: white;
  background: var(--red);
  clip-path: polygon(10% 0, 90% 0, 90% 3%, 96% 6%, 100% 10%, 100% 90%, 97% 90%, 94% 96%, 90% 100%, 10% 100%, 10% 97%, 4% 94%, 0 90%, 0 10%, 3% 10%, 6% 4%);
  font: 700 17px var(--serif);
}
.navlinks { display: flex; align-items: center; gap: 24px; font-size: 14px; }
.navlinks a { text-decoration: none; }
.navlinks a:hover { color: var(--red); }
.lang { border: 1px solid var(--line); border-radius: 999px; padding: 9px 13px; color: var(--ink); background: var(--paper-soft); cursor: pointer; font: inherit; }

.hero {
  max-width: 1160px;
  min-height: 720px;
  margin: auto;
  padding: 90px 24px 78px;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  align-items: center;
  gap: 74px;
}
.eyebrow { color: var(--red); text-transform: uppercase; letter-spacing: .16em; font-size: 12px; font-weight: 750; }
h1 { margin: 18px 0 24px; max-width: 680px; font: 500 clamp(52px, 7vw, 94px) / .98 var(--serif); letter-spacing: -.055em; }
.lead { max-width: 650px; color: var(--muted); font-size: clamp(17px, 2vw, 21px); line-height: 1.72; }
.actions { margin-top: 34px; display: flex; flex-wrap: wrap; gap: 12px; }
.button { min-height: 52px; padding: 0 22px; display: inline-flex; align-items: center; gap: 10px; border-radius: 3px; text-decoration: none; font-weight: 700; }
.primary { color: white; background: var(--red); box-shadow: 0 14px 36px #9d2b1830; }
.secondary { border: 1px solid var(--line); background: #fff9; }
.trust-row { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 12px 22px; color: var(--muted); font-size: 13px; }
.trust-row > span { display: inline-flex; align-items: center; gap: 8px; }
.trust-row i { width: 7px; height: 7px; border-radius: 50%; background: var(--gold); }

.visual { min-height: 520px; display: grid; place-items: center; position: relative; }
.stamp { width: min(390px, 88vw); aspect-ratio: 4 / 5; position: relative; padding: 25px; background: white; filter: drop-shadow(0 30px 34px #5836222c); clip-path: polygon(3% 0, 97% 0, 97% 1%, 100% 3%, 100% 97%, 99% 97%, 97% 100%, 3% 100%, 3% 99%, 0 97%, 0 3%, 1% 3%); transform: rotate(3deg); }
.photo { height: 100%; overflow: hidden; position: relative; background: linear-gradient(160deg, #f0c98b 0 31%, #7fa5a3 32% 61%, #254145 62%); }
.sun { position: absolute; top: 15%; right: 17%; width: 62px; aspect-ratio: 1; border-radius: 50%; background: #ffe1a8; box-shadow: 0 0 55px #ffe1a8; }
.hill { position: absolute; width: 170%; height: 55%; left: -34%; bottom: -15%; border-radius: 50%; transform: rotate(-8deg); }
.hill.one { background: linear-gradient(170deg, #d8c782, #617961 64%, #263e39); }
.hill.two { left: 4%; bottom: -29%; background: linear-gradient(170deg, #a99058, #394d42 60%, #1d2f2c); transform: rotate(11deg); }
.seal { position: absolute; right: -28px; bottom: 38px; width: 112px; aspect-ratio: 1; border: 2px solid #cf351f88; border-radius: 50%; transform: rotate(-13deg); display: grid; place-items: center; text-align: center; color: #cf351faa; background: #f7f0e570; font: 700 11px var(--serif); letter-spacing: .1em; }
.caption { position: absolute; right: 7%; bottom: 5%; color: var(--muted); letter-spacing: .18em; font-size: 11px; transform: rotate(3deg); }

.section { max-width: 1080px; margin: auto; padding: 96px 24px; border-top: 1px solid var(--line); }
.section h2 { margin: 10px 0 22px; font: 500 clamp(36px, 5vw, 58px) / 1.08 var(--serif); letter-spacing: -.04em; }
.section h3 { margin: 12px 0 8px; font: 600 23px var(--serif); }
.section p, .section li { color: var(--muted); line-height: 1.75; }
.section-heading { display: grid; grid-template-columns: 1.25fr .75fr; gap: 60px; align-items: end; }
.section-heading > p { padding-bottom: 10px; }
.feature-grid, .help-grid { margin-top: 42px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.feature-grid article, .help-grid article { min-height: 250px; padding: 28px; border: 1px solid var(--line); background: #fff7; }
.number { color: var(--red); font: 700 12px var(--sans); letter-spacing: .15em; }
.help-icon { width: 44px; height: 44px; display: grid; place-items: center; color: white; background: var(--red); border-radius: 50%; font-size: 22px; }

.supportbox { margin-top: 22px; display: flex; justify-content: space-between; align-items: center; gap: 30px; padding: 32px; color: var(--paper); background: var(--dark); }
.supportbox strong { font: 600 24px var(--serif); }
.supportbox p { margin: 7px 0 0; max-width: 620px; color: #ead9ca; }
.contact-actions { min-width: 190px; display: flex; flex-direction: column; gap: 10px; }
.contact-actions a { padding: 11px 14px; color: var(--dark); background: var(--paper); text-align: center; text-decoration: none; font-size: 13px; font-weight: 750; }
.contact-actions .quiet { color: var(--paper); background: transparent; border: 1px solid #f7f0e566; }
.faq { margin-top: 34px; border-top: 1px solid var(--line); }
details { border-bottom: 1px solid var(--line); }
summary { padding: 22px 44px 22px 0; cursor: pointer; list-style: none; position: relative; font: 600 18px var(--serif); }
summary::after { content: "+"; position: absolute; right: 4px; color: var(--red); font: 400 24px var(--sans); }
details[open] summary::after { content: "−"; }
details > p { margin: -4px 0 22px; max-width: 780px; }

.privacy-section { display: grid; grid-template-columns: 1fr 1fr; align-items: end; gap: 48px; }
.policy-links { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.card-link { min-height: 170px; padding: 25px; display: flex; flex-direction: column; justify-content: space-between; border: 1px solid var(--line); background: #fff8; text-decoration: none; }
.card-link:hover { border-color: var(--red); transform: translateY(-2px); }
.card-link b { font: 500 24px var(--serif); }
.card-link span { color: var(--red); font-weight: 700; }

.document { max-width: 840px; margin: 0 auto; padding: 72px 24px 110px; }
.document h1 { margin-bottom: 12px; font-size: clamp(42px, 7vw, 72px); }
.document h2 { margin: 44px 0 11px; font: 600 26px var(--serif); }
.document h3 { margin: 27px 0 8px; font-size: 17px; }
.document p, .document li { color: var(--muted); line-height: 1.8; }
.document .date { color: var(--red); font-weight: 700; }
.document .summary { padding: 22px; border-left: 3px solid var(--red); background: #fff7; font-size: 19px; }
.back { display: inline-flex; margin-bottom: 40px; color: var(--red); text-decoration: none; font-weight: 700; }

footer { max-width: 1080px; margin: auto; padding: 38px 24px 56px; display: flex; justify-content: space-between; color: var(--muted); border-top: 1px solid var(--line); font-size: 13px; }
[data-lang] { display: none; }
html[data-active="zh"] [data-lang="zh"], html[data-active="en"] [data-lang="en"] { display: revert; }

@media (max-width: 840px) {
  .hero { grid-template-columns: 1fr; padding-top: 62px; gap: 36px; }
  .visual { min-height: 440px; }
  .stamp { width: 300px; }
  .section-heading, .privacy-section { grid-template-columns: 1fr; gap: 18px; }
  .feature-grid, .help-grid { grid-template-columns: 1fr; }
  .feature-grid article, .help-grid article { min-height: 0; }
  .supportbox { align-items: flex-start; flex-direction: column; }
  .contact-actions { width: 100%; }
}
@media (max-width: 600px) {
  .navlinks > a { display: none; }
  h1 { font-size: 54px; }
  .policy-links { grid-template-columns: 1fr; }
  .section { padding-top: 72px; padding-bottom: 72px; }
  .document { padding-top: 44px; }
  footer { flex-direction: column; gap: 10px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .card-link { transition: none; }
}