:root {
  --ink: #0a0b0e;
  --ink-soft: #14161b;
  --panel: #181a20;
  --line: rgba(255, 255, 255, 0.1);
  --text: #f6f1e6;
  --muted: #a9a59c;
  --gold: #d8b46a;
  --gold-bright: #f2d28b;
  --max: 1160px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background:
    radial-gradient(circle at 85% 10%, rgba(216, 180, 106, 0.08), transparent 28rem),
    var(--ink);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

button, a { -webkit-tap-highlight-color: transparent; }

.site-frame { min-height: 100vh; overflow: hidden; }

.site-header {
  width: min(calc(100% - 48px), var(--max));
  height: 88px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.brand { display: inline-flex; align-items: center; gap: 11px; font-weight: 700; letter-spacing: .03em; }

.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  aspect-ratio: 1;
  border: 1px solid rgba(216, 180, 106, .48);
  border-radius: 50%;
  color: var(--gold-bright);
  background: linear-gradient(145deg, #2a2419, #0e0f12 65%);
  box-shadow: inset 0 0 0 3px rgba(216, 180, 106, .06);
  font-family: "Songti SC", serif;
}

.site-header nav { display: flex; gap: 30px; color: var(--muted); font-size: 14px; }
.site-header nav a { transition: color .2s ease; }
.site-header nav a:hover, .site-header nav a:focus-visible { color: var(--gold-bright); }

.home-hero {
  width: min(calc(100% - 48px), var(--max));
  min-height: 630px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.08fr .92fr;
  align-items: center;
  gap: 40px;
}

.eyebrow { margin: 0 0 16px; color: var(--gold); font-size: 12px; font-weight: 700; letter-spacing: .22em; }

.hero-copy h1, .article-hero h1 {
  margin: 0;
  font-family: "Songti SC", "STSong", serif;
  font-weight: 600;
  letter-spacing: -.04em;
  line-height: 1.18;
}

.hero-copy h1 { max-width: 670px; font-size: clamp(48px, 6.6vw, 84px); }

.hero-intro { max-width: 530px; margin: 28px 0 0; color: var(--muted); font-size: 17px; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 38px; }

.button {
  min-height: 48px;
  padding: 11px 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 650;
  transition: transform .2s ease, border-color .2s ease, background .2s ease;
}

.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--gold); color: #16120b; }
.button-primary:hover { background: var(--gold-bright); }
.button-secondary { border: 1px solid var(--line); color: #ded9cf; background: rgba(255,255,255,.025); }
.button-secondary:hover { border-color: rgba(216,180,106,.45); }

.coin-scene { position: relative; height: 470px; display: grid; place-items: center; }

.coin {
  position: relative;
  z-index: 2;
  width: min(60vw, 260px);
  aspect-ratio: 1;
  border: 7px solid #756034;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--gold-bright);
  background:
    radial-gradient(circle at 34% 27%, #49402e 0, #16171a 34%, #08090b 70%);
  box-shadow:
    inset 0 0 0 2px #e2c47f,
    inset 0 0 0 10px rgba(216,180,106,.12),
    0 35px 80px rgba(0,0,0,.58),
    -18px -8px 70px rgba(216,180,106,.08);
  transform: rotate(-7deg) perspective(600px) rotateY(-12deg);
  animation: coinFloat 6s ease-in-out infinite;
}

.coin::before {
  content: "";
  position: absolute;
  inset: 25px;
  border: 1px solid rgba(216,180,106,.38);
  border-radius: 50%;
}

.coin span { font-family: "Songti SC", serif; font-size: 82px; text-shadow: 0 2px 18px rgba(216,180,106,.23); }
.coin i { position: absolute; bottom: 48px; width: 31px; height: 1px; background: var(--gold); box-shadow: -44px 0 0 rgba(216,180,106,.55), 44px 0 0 rgba(216,180,106,.55); }

.orbit { position: absolute; border: 1px solid rgba(216,180,106,.18); border-radius: 50%; transform: rotate(-18deg); }
.orbit-one { width: 410px; height: 185px; }
.orbit-two { width: 470px; height: 255px; transform: rotate(24deg); border-color: rgba(216,180,106,.09); }
.coin-shadow { position: absolute; bottom: 42px; width: 210px; height: 30px; background: rgba(0,0,0,.65); filter: blur(17px); border-radius: 50%; }

@keyframes coinFloat {
  0%, 100% { transform: translateY(0) rotate(-7deg) perspective(600px) rotateY(-12deg); }
  50% { transform: translateY(-14px) rotate(-4deg) perspective(600px) rotateY(-8deg); }
}

.entry-grid {
  width: min(calc(100% - 48px), var(--max));
  margin: 0 auto 120px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.entry-card {
  min-height: 225px;
  padding: 28px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 24px;
  align-items: start;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: linear-gradient(145deg, rgba(255,255,255,.045), rgba(255,255,255,.015));
  transition: transform .25s ease, border-color .25s ease;
}

.entry-card:hover { transform: translateY(-5px); border-color: rgba(216,180,106,.35); }
.card-index { color: var(--gold); font: 12px/1 monospace; }
.entry-card h2 { margin: 40px 0 8px; font-family: "Songti SC", serif; font-size: 26px; }
.entry-card p { max-width: 360px; margin: 0; color: var(--muted); font-size: 14px; }
.card-arrow { color: var(--gold); font-size: 22px; }

.article-main { width: min(calc(100% - 48px), var(--max)); margin: 0 auto; }

.article-hero { padding: 110px 0 82px; border-bottom: 1px solid var(--line); }
.article-hero h1 { font-size: clamp(48px, 7vw, 78px); }
.article-hero > p:last-child { max-width: 650px; margin: 24px 0 0; color: var(--muted); font-size: 17px; }

.article-layout { display: grid; grid-template-columns: 230px minmax(0, 720px); gap: 90px; padding: 72px 0 120px; }
.article-meta { align-self: start; position: sticky; top: 40px; }
.article-meta p { margin: 0 0 4px; color: #77756e; font-size: 12px; }
.article-meta strong { display: block; margin-bottom: 24px; font-size: 14px; font-weight: 600; }

.legal-content section + section { margin-top: 54px; }
.legal-content h2 { margin: 0 0 20px; font-family: "Songti SC", serif; font-size: 26px; line-height: 1.4; }
.legal-content h3 { margin: 28px 0 8px; color: var(--gold-bright); font-size: 16px; }
.legal-content p { margin: 0 0 16px; color: #bbb7ad; }
.legal-content ul { margin: 18px 0 20px; padding-left: 1.25em; color: #bbb7ad; }
.legal-content li + li { margin-top: 8px; }
.legal-content a { color: var(--gold-bright); text-decoration: underline; text-underline-offset: 4px; }

.contact-block { padding: 24px; border: 1px solid rgba(216,180,106,.25); border-radius: 18px; background: rgba(216,180,106,.055); }
.contact-block p:last-child { margin-bottom: 0; }

.support-main { padding-bottom: 120px; }

.support-contact {
  margin: 72px 0 110px;
  padding: 42px;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 28px;
  border: 1px solid rgba(216,180,106,.24);
  border-radius: 28px;
  background: linear-gradient(130deg, rgba(216,180,106,.09), rgba(255,255,255,.025));
}

.support-contact h2, .section-heading h2, .support-note h2 { margin: 0; font-family: "Songti SC", serif; font-size: 30px; }
.support-contact div > p:last-child { max-width: 620px; margin: 10px 0 0; color: var(--muted); font-size: 14px; }
.support-email { grid-column: 2; color: var(--gold); font-size: 13px; text-align: center; }

.faq-section { display: grid; grid-template-columns: 230px 1fr; gap: 90px; }
.section-heading h2 { font-size: 36px; }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 20px; cursor: pointer; list-style: none; font-weight: 600; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary i { color: var(--gold); font-style: normal; font-size: 21px; transition: transform .2s ease; }
.faq-list details[open] summary i { transform: rotate(45deg); }
.faq-list details p { max-width: 660px; margin: -4px 44px 26px 0; color: var(--muted); font-size: 14px; }

.support-note { margin-top: 110px; padding: 34px 0; display: flex; align-items: center; justify-content: space-between; gap: 30px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.support-note h2 { font-size: 22px; }
.support-note p { margin: 6px 0 0; color: var(--muted); font-size: 14px; }
.text-link { flex: none; color: var(--gold-bright); font-size: 14px; }

.company-note { padding-top: 45px; display: grid; grid-template-columns: 120px 1fr auto; gap: 24px; align-items: center; }
.company-note p { margin: 0; color: #77756e; font-size: 12px; }
.company-note strong { font-size: 14px; }
.company-note a { color: var(--gold); font-size: 13px; }

.site-footer {
  width: min(calc(100% - 48px), var(--max));
  margin: 0 auto;
  padding: 50px 0 34px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 36px;
  border-top: 1px solid var(--line);
}

.site-footer > div:first-child p { margin: 13px 0 0; color: var(--muted); font-size: 12px; }
.footer-links { display: flex; gap: 24px; color: var(--muted); font-size: 13px; }
.footer-links a:hover { color: var(--gold-bright); }
.copyright { grid-column: 1 / -1; margin: 12px 0 0; color: #5f5e59; font-size: 11px; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .coin { animation: none; }
  .button, .entry-card { transition: none; }
}

@media (max-width: 820px) {
  .site-header { width: min(calc(100% - 32px), var(--max)); height: 72px; }
  .site-header nav { gap: 18px; font-size: 13px; }
  .home-hero { width: min(calc(100% - 32px), var(--max)); min-height: auto; padding: 80px 0 52px; grid-template-columns: 1fr; }
  .hero-copy h1 { font-size: clamp(44px, 13vw, 68px); }
  .coin-scene { height: 380px; }
  .coin { width: 220px; }
  .orbit-one { width: 330px; }
  .orbit-two { width: 370px; }
  .entry-grid { width: min(calc(100% - 32px), var(--max)); margin-bottom: 80px; grid-template-columns: 1fr; }
  .article-main { width: min(calc(100% - 32px), var(--max)); }
  .article-hero { padding: 80px 0 60px; }
  .article-layout { grid-template-columns: 1fr; gap: 30px; padding: 48px 0 90px; }
  .article-meta { position: static; display: grid; grid-template-columns: auto 1fr; gap: 5px 20px; padding-bottom: 28px; border-bottom: 1px solid var(--line); }
  .article-meta strong { margin: 0; }
  .support-contact { margin: 48px 0 80px; padding: 28px; grid-template-columns: 1fr; }
  .support-contact .button { justify-self: start; }
  .support-email { grid-column: 1; text-align: left; }
  .faq-section { grid-template-columns: 1fr; gap: 30px; }
  .support-note { align-items: flex-start; flex-direction: column; }
  .company-note { grid-template-columns: 1fr; gap: 8px; }
  .site-footer { width: min(calc(100% - 32px), var(--max)); grid-template-columns: 1fr; }
  .footer-links { flex-wrap: wrap; }
}

@media (max-width: 480px) {
  body { font-size: 15px; }
  .site-header nav a:first-child { display: none; }
  .home-hero { padding-top: 62px; }
  .hero-intro { font-size: 15px; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .coin-scene { height: 320px; }
  .coin { width: 190px; border-width: 6px; }
  .coin span { font-size: 68px; }
  .orbit-one { width: 270px; height: 140px; }
  .orbit-two { width: 310px; height: 205px; }
  .entry-card { min-height: 200px; padding: 22px; gap: 16px; }
  .entry-card h2 { margin-top: 28px; }
  .article-hero h1 { font-size: 48px; }
  .legal-content h2 { font-size: 23px; }
  .support-contact { border-radius: 22px; }
  .faq-list summary { min-height: 72px; }
  .company-note strong { font-size: 13px; }
}