:root {
  --ink: #0c2131;
  --muted: #667683;
  --cream: #f5f3ed;
  --gold: #d8a74f;
  --navy: #071c2a;
  --line: rgba(12, 33, 49, 0.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: #faf9f6; font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", sans-serif; }
button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; text-decoration: none; }
button { color: inherit; }

.section-shell { width: min(1180px, calc(100% - 48px)); margin: 0 auto; }
.site-header { position: absolute; z-index: 20; top: 0; left: 50%; width: min(1240px, calc(100% - 48px)); height: 96px; transform: translateX(-50%); display: flex; align-items: center; justify-content: space-between; color: white; border-bottom: 1px solid rgba(255,255,255,.12); }
.brand { display: inline-flex; align-items: center; gap: 13px; font-size: 18px; font-weight: 650; letter-spacing: .06em; }
.brand-mark { width: 29px; height: 29px; display: flex; align-items: flex-end; gap: 3px; transform: skewY(-12deg); }
.brand-mark i { display: block; width: 7px; background: linear-gradient(180deg, #f0cd8b, #d29b3c); border-radius: 1px; }
.brand-mark i:nth-child(1) { height: 12px; }.brand-mark i:nth-child(2) { height: 21px; }.brand-mark i:nth-child(3) { height: 29px; }
.nav-links { display: flex; align-items: center; gap: 36px; font-size: 14px; }
.nav-links button, .footer-links button { border: 0; background: none; padding: 10px 0; cursor: pointer; }
.nav-links button { color: rgba(255,255,255,.75); }
.nav-links button:hover { color: white; }
.nav-links .support-link { padding: 11px 18px; border: 1px solid rgba(255,255,255,.25); border-radius: 2px; }
.support-link span { color: var(--gold); margin-left: 7px; }
.menu-button { display: none; width: 42px; height: 42px; border: 1px solid rgba(255,255,255,.25); background: transparent; border-radius: 3px; }
.menu-button span { display: block; width: 18px; height: 1px; margin: 5px auto; background: white; }

.hero { min-height: 760px; position: relative; overflow: hidden; display: flex; flex-direction: column; justify-content: center; align-items: center; padding: 155px 24px 98px; color: white; text-align: center; background: radial-gradient(circle at 70% 30%, #123b50 0, transparent 33%), linear-gradient(135deg, #061723 0%, #0a2a3b 52%, #071c29 100%); }
.hero-grid { position: absolute; inset: 0; opacity: .1; background-image: linear-gradient(rgba(255,255,255,.22) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.22) 1px, transparent 1px); background-size: 70px 70px; mask-image: linear-gradient(to bottom, black, transparent 88%); }
.hero-glow { position: absolute; width: 520px; height: 520px; top: 20%; right: -180px; border: 1px solid rgba(216,167,79,.28); border-radius: 50%; box-shadow: 0 0 0 80px rgba(216,167,79,.025), 0 0 0 160px rgba(216,167,79,.018); }
.hero > *:not(.hero-grid,.hero-glow) { position: relative; z-index: 1; }
.eyebrow, .section-kicker { display: flex; align-items: center; gap: 12px; font-size: 11px; letter-spacing: .25em; font-weight: 700; color: #b2833b; }
.eyebrow { color: #d6b36f; margin-bottom: 28px; }
.eyebrow span { display: inline-block; width: 26px; height: 1px; background: currentColor; }
.hero h1 { margin: 0; font-family: Georgia, "Songti SC", serif; font-size: clamp(50px, 6.2vw, 82px); line-height: 1.18; letter-spacing: -.025em; font-weight: 500; }
.hero h1 em { color: #e0b764; font-style: normal; }
.hero > p { margin: 30px 0 36px; color: rgba(255,255,255,.65); font-size: 17px; line-height: 1.9; }
.hero-actions { display: flex; align-items: center; gap: 30px; }
.primary-button { min-width: 152px; height: 51px; border: 0; border-radius: 2px; background: var(--gold); color: #142633; font-weight: 700; cursor: pointer; box-shadow: 0 10px 30px rgba(0,0,0,.18); }
.primary-button span { margin-left: 12px; }
.primary-button:hover { background: #e7b960; transform: translateY(-2px); }
.text-button { border: 0; background: none; color: rgba(255,255,255,.82); cursor: pointer; }
.text-button span { margin-left: 7px; color: var(--gold); }
.hero-metrics { width: min(750px, 85%); margin-top: 72px; padding-top: 27px; border-top: 1px solid rgba(255,255,255,.12); display: grid; grid-template-columns: repeat(3,1fr); }
.hero-metrics div { display: flex; align-items: baseline; justify-content: center; gap: 11px; border-right: 1px solid rgba(255,255,255,.1); }
.hero-metrics div:last-child { border-right: 0; }
.hero-metrics strong { font-family: Georgia, serif; font-size: 25px; color: #e1b866; font-weight: 500; }
.hero-metrics span { font-size: 12px; color: rgba(255,255,255,.5); }

.intro { padding: 118px 0 125px; }
.section-kicker span { width: 38px; height: 1px; background: #c8a360; }
.intro-layout { margin-top: 28px; display: grid; grid-template-columns: 1fr 1.1fr; gap: 110px; }
.intro h2, .section-heading h2 { margin: 0; font-family: Georgia, "Songti SC", serif; font-size: clamp(36px, 4vw, 54px); line-height: 1.3; font-weight: 500; letter-spacing: -.02em; }
.intro-copy > p { margin: 7px 0 38px; font-size: 16px; color: var(--muted); line-height: 2; }
.values { display: grid; grid-template-columns: repeat(3,1fr); border-top: 1px solid var(--line); padding-top: 27px; gap: 18px; }
.values div { display: flex; gap: 13px; }
.values b { font-family: Georgia, serif; color: #bd8730; font-size: 13px; }
.values span { font-size: 12px; line-height: 1.8; color: #87929a; }
.values strong { display: block; color: var(--ink); font-size: 14px; font-weight: 650; }

.sites-section { padding: 105px 0 115px; color: white; background: var(--navy); position: relative; overflow: hidden; }
.sites-section::after { content: ""; position: absolute; width: 430px; height: 430px; right: -280px; top: -230px; border: 1px solid rgba(216,167,79,.15); border-radius: 50%; box-shadow: 0 0 0 70px rgba(216,167,79,.018); }
.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 30px; }
.section-kicker.light { color: #d5ad61; }
.section-heading h2 { margin-top: 16px; font-size: clamp(35px, 3.5vw, 48px); }
.search-box { width: 320px; height: 48px; display: flex; align-items: center; padding: 0 14px; gap: 10px; color: rgba(255,255,255,.46); background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.13); }
.search-box input { min-width: 0; flex: 1; border: 0; outline: 0; background: transparent; color: white; font-size: 13px; }
.search-box input::placeholder { color: rgba(255,255,255,.36); }
.search-box kbd { border: 1px solid rgba(255,255,255,.13); padding: 2px 5px; font-size: 10px; font-family: inherit; }
.site-grid { margin-top: 52px; display: grid; grid-template-columns: repeat(3,1fr); border-top: 1px solid rgba(255,255,255,.1); border-left: 1px solid rgba(255,255,255,.1); }
.site-card { min-height: 215px; padding: 31px; display: grid; grid-template-columns: 47px 1fr auto; gap: 18px; border-right: 1px solid rgba(255,255,255,.1); border-bottom: 1px solid rgba(255,255,255,.1); transition: .25s ease; animation: cardIn .5s both; animation-delay: var(--delay); }
@keyframes cardIn { from { opacity: 0; transform: translateY(8px); } }
.site-card:hover { background: rgba(255,255,255,.055); transform: translateY(-2px); }
.site-icon { width: 47px; height: 47px; display: grid; place-items: center; border-radius: 3px; font-weight: 700; background: rgba(47,181,207,.12); color: #66c9dc; }
.site-icon.blue { background: rgba(72,127,230,.14); color:#79a7ff; }.site-icon.violet { background: rgba(147,111,221,.14); color:#b598ef; }.site-icon.amber { background: rgba(216,167,79,.14); color:#e4ba69; }.site-icon.emerald { background: rgba(51,176,130,.14); color:#67d5ad; }.site-icon.rose { background: rgba(215,91,124,.14); color:#ec89a4; }
.site-card-copy > span { color: rgba(255,255,255,.37); font-size: 10px; letter-spacing: .14em; }
.site-card h3 { margin: 13px 0 10px; font-size: 19px; font-weight: 600; }
.site-card p { margin: 0; color: rgba(255,255,255,.46); font-size: 12px; line-height: 1.8; }
.card-arrow { color: rgba(255,255,255,.25); transition: .2s; }
.site-card:hover .card-arrow { color: var(--gold); transform: translate(3px,-3px); }
.empty-state { padding: 60px; text-align: center; color: rgba(255,255,255,.5); border: 1px solid rgba(255,255,255,.1); border-top: 0; }

.downloads { padding: 112px 0 120px; }
.download-heading { align-items: center; }
.download-heading > p { color: var(--muted); line-height: 1.9; font-size: 14px; }
.filter-bar { margin-top: 44px; display: flex; gap: 2px; border-bottom: 1px solid var(--line); }
.filter-bar button { position: relative; border: 0; background: transparent; padding: 15px 23px; color: #7b8993; font-size: 13px; cursor: pointer; }
.filter-bar button::after { content: ""; position: absolute; left: 50%; right: 50%; bottom: -1px; height: 2px; background: var(--gold); transition: .25s; }
.filter-bar button.active { color: var(--ink); font-weight: 650; }
.filter-bar button.active::after { left: 15px; right: 15px; }
.resource-list { border-bottom: 1px solid var(--line); }
.resource-row { min-height: 104px; display: grid; grid-template-columns: 58px 1fr auto 44px; align-items: center; gap: 21px; border-bottom: 1px solid var(--line); transition: .2s; }
.resource-row:last-child { border-bottom: 0; }
.resource-row:hover { background: white; padding-left: 13px; padding-right: 13px; box-shadow: 0 12px 35px rgba(16,40,57,.06); }
.file-mark { width: 48px; height: 48px; display: grid; place-items: center; border: 1px solid #d8d4ca; color: #a6762e; background: #f7f4ec; font: 700 10px/1 Georgia,serif; }
.resource-main { display: grid; grid-template-columns: 1fr 1.5fr; align-items: center; gap: 8px 35px; }
.resource-main small { grid-column: 1/-1; color: #b4853d; font-size: 10px; letter-spacing: .12em; }
.resource-main strong { font-size: 16px; font-weight: 650; }
.resource-main > span { color: #8a959d; font-size: 12px; }
.resource-size { color: #96a0a7; font-size: 12px; }
.download-action { width: 38px; height: 38px; display: grid; place-items: center; color: #9b761f; border: 1px solid #d9cfb8; border-radius: 50%; transition: .2s; }
.resource-row:hover .download-action { background: var(--gold); color: var(--navy); border-color: var(--gold); }
.download-note { margin-top: 30px; display: flex; align-items: center; gap: 10px; color: #7b8992; font-size: 12px; }
.download-note > span { width: 19px; height: 19px; display: grid; place-items: center; border: 1px solid #b9c0c4; border-radius: 50%; font-family: Georgia,serif; }
.download-note a { color: #a6762e; border-bottom: 1px solid #c9aa70; }

.contact-section { padding: 88px 0; color: white; background: #0a2939; border-bottom: 1px solid rgba(255,255,255,.09); }
.contact-inner { display: grid; grid-template-columns: 1fr 1.1fr; align-items: center; gap: 110px; }
.contact-section h2 { margin: 16px 0 0; font: 500 clamp(38px, 4vw, 54px)/1.2 Georgia, "Songti SC", serif; }
.contact-copy p { margin: 0 0 24px; color: rgba(255,255,255,.58); font-size: 14px; line-height: 1.9; }
.contact-copy a { min-height: 64px; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 20px; padding: 0 20px; color: white; border: 1px solid rgba(255,255,255,.16); transition: .2s; }
.contact-copy a:hover { border-color: var(--gold); background: rgba(255,255,255,.04); }
.contact-copy a > span { color: #d5ad61; font-size: 11px; letter-spacing: .12em; }
.contact-copy a strong { font-size: 15px; font-weight: 500; }
.contact-copy a > span:last-child { font-size: 17px; }

footer { background: #061722; color: rgba(255,255,255,.55); }
.footer-top { padding: 65px 0 55px; display: flex; align-items: center; justify-content: space-between; }
.footer-brand { color: white; }
.footer-top p { font-size: 12px; margin: 16px 0 0 42px; }
.footer-links { display: flex; gap: 32px; font-size: 12px; }
.footer-links button, .footer-links a { color: rgba(255,255,255,.5); }
.footer-links button:hover, .footer-links a:hover { color: white; }
.footer-bottom { padding: 22px 0; border-top: 1px solid rgba(255,255,255,.09); display: flex; justify-content: space-between; font-size: 10px; }

@media (max-width: 900px) {
  .site-grid { grid-template-columns: repeat(2,1fr); }
  .intro-layout { gap: 50px; }
  .values { grid-template-columns: 1fr; }
  .resource-main { grid-template-columns: 1fr; }
  .resource-main small { grid-column: auto; }
}

@media (max-width: 700px) {
  .section-shell { width: min(100% - 32px, 1180px); }
  .site-header { width: calc(100% - 32px); height: 76px; }
  .menu-button { display: block; }
  .nav-links { display: none; position: absolute; top: 67px; right: 0; width: 220px; padding: 20px; flex-direction: column; align-items: stretch; gap: 7px; background: #0b2a3b; box-shadow: 0 18px 40px rgba(0,0,0,.25); }
  .nav-links.open { display: flex; }
  .nav-links button { text-align: left; }
  .hero { min-height: 700px; padding-top: 125px; }
  .hero > p { font-size: 14px; }
  .desktop-break { display: none; }
  .hero-metrics { width: 100%; }
  .hero-metrics div { flex-direction: column; align-items: center; gap: 3px; }
  .hero-metrics strong { font-size: 21px; }
  .intro { padding: 80px 0; }
  .intro-layout { grid-template-columns: 1fr; gap: 25px; }
  .sites-section, .downloads { padding: 78px 0; }
  .section-heading { align-items: stretch; flex-direction: column; }
  .search-box { width: 100%; }
  .site-grid { grid-template-columns: 1fr; margin-top: 35px; }
  .site-card { min-height: 175px; }
  .download-heading > p { margin: 0; }
  .filter-bar { overflow-x: auto; padding-bottom: 2px; }
  .filter-bar button { flex: none; padding-inline: 16px; }
  .resource-row { grid-template-columns: 48px 1fr 38px; gap: 14px; padding: 17px 0; }
  .resource-size { display: none; }
  .resource-main > span { line-height: 1.6; }
  .contact-section { padding: 72px 0; }
  .contact-inner { grid-template-columns: 1fr; gap: 28px; }
  .contact-copy a { grid-template-columns: 1fr auto; gap: 6px 15px; padding-block: 14px; }
  .contact-copy a > span:first-child { grid-column: 1 / -1; }
  .footer-top { align-items: flex-start; flex-direction: column; gap: 35px; }
  .footer-links { flex-wrap: wrap; gap: 15px 25px; }
  .footer-bottom { gap: 14px; flex-direction: column; }
}