:root{--ink:#0c1220;--muted:#8b93a7;--line:#2a3348;--soft:#12182a;--panel:#1a2236;--gold:#d4af37;--gold-d:#b8922a;--navy:#0a1628;--crimson:#8b1e3f;--radius:8px;--max:1240px}
*{box-sizing:border-box;margin:0;padding:0}

body{font-family:Georgia,"Palatino Linotype","Songti SC","SimSun",serif;color:#e8e0d0;background:var(--navy);line-height:1.7}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.container{width:min(var(--max),calc(100% - 36px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:100;background:#0a1220;border-bottom:2px solid var(--gold-d)}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:14px;min-height:74px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;font-weight:900;font-family:-apple-system,BlinkMacSystemFont,"Microsoft YaHei",sans-serif}
.brand-mark{width:42px;height:42px;border-radius:6px;display:grid;place-items:center;background:var(--gold-d);color:#0c1220;font-size:16px;font-weight:900}
.nav{display:flex;align-items:center;gap:18px;font-size:14px;font-weight:700;color:#c4b89a;flex-wrap:wrap;font-family:-apple-system,BlinkMacSystemFont,"Microsoft YaHei",sans-serif}
.nav a:hover,.nav-item:hover>a{color:var(--gold)}
.nav-item{position:relative;padding:24px 0}
.dropdown{position:absolute;top:70px;left:50%;min-width:260px;padding:10px;border:1px solid var(--gold-d);border-radius:8px;background:#141c30;opacity:0;visibility:hidden;display:grid;gap:4px;transform:translateX(-50%)}
.nav-item:hover .dropdown{opacity:1;visibility:visible}
.dropdown a{padding:8px 10px;border-radius:6px;font-size:13px;font-weight:600}
.dropdown a:hover{background:#1e2a44;color:var(--gold)}
.header-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-family:-apple-system,BlinkMacSystemFont,"Microsoft YaHei",sans-serif}
.contact{font-size:12px;color:#8b93a7}
.language{font-size:12px;padding:6px 10px;border:1px solid var(--gold-d);border-radius:4px;color:var(--gold)}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 20px;border:1px solid transparent;border-radius:4px;font-weight:800;font-size:14px;cursor:pointer;font-family:-apple-system,BlinkMacSystemFont,"Microsoft YaHei",sans-serif}
.btn-gold{background:var(--gold-d);color:#0c1220}
.btn-navy{background:#1e3a5f;color:#e8e0d0;border-color:var(--gold-d)}
.btn-ghost{background:transparent;border-color:var(--gold-d);color:var(--gold)}
section{padding:56px 0;scroll-margin-top:80px}
.section-label{display:inline-block;margin-bottom:8px;color:var(--gold);font-size:12px;font-weight:900;letter-spacing:.16em;text-transform:uppercase;font-family:-apple-system,BlinkMacSystemFont,"Microsoft YaHei",sans-serif}
.section-head h2{font-size:clamp(26px,3.6vw,40px);line-height:1.2;margin-bottom:10px}
.section-head p{color:#8b93a7;max-width:640px}
.trident{color:var(--gold);font-weight:900}
.footer{padding:56px 0 24px;border-top:2px solid var(--gold-d);background:#0a1220;margin-top:20px;font-family:-apple-system,BlinkMacSystemFont,"Microsoft YaHei",sans-serif}
.footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr .9fr;gap:28px}
.footer h3,.footer h4{margin-bottom:12px;font-size:16px;color:var(--gold)}
.footer p,.footer a,.footer li{color:#8b93a7;font-size:14px}
.footer ul{list-style:none;display:grid;gap:8px}
.subscribe{display:flex;gap:8px;margin-top:12px}
.subscribe input{flex:1;min-height:40px;border:1px solid var(--line);border-radius:4px;padding:0 14px;outline:none;background:#141c30;color:#e8e0d0}
.copyright{display:flex;justify-content:space-between;gap:16px;margin-top:32px;padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:#8b93a7;flex-wrap:wrap}
details.faq{border:1px solid var(--line);border-radius:var(--radius);background:#141c30;margin-bottom:8px}
details.faq summary{padding:14px 16px;font-weight:800;cursor:pointer;list-style:none;color:var(--gold);font-family:-apple-system,BlinkMacSystemFont,"Microsoft YaHei",sans-serif}
details.faq summary::-webkit-details-marker{display:none}
details.faq p{padding:0 16px 14px;color:#8b93a7;font-size:14px}
@media(max-width:980px){.nav,.contact{display:none}.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:720px){.container{width:min(100% - 24px,var(--max))}.footer-grid{grid-template-columns:1fr}.copyright{flex-direction:column}}
img[data-src]{min-height:120px;background:rgba(128,128,128,.08)}
.below-fold{content-visibility:auto;contain-intrinsic-size:auto 480px}