:root{--navy:#0d2238;--paper:#f4f1ea;--ink:#18232e;--muted:#66717b;--wine:#7f3b45;--gold:#b88a55;--line:#d9d9d3;--max:1200px}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:Arial,"Microsoft YaHei",sans-serif;line-height:1.7}img{max-width:100%;height:auto}a{color:inherit}.skip{position:absolute;left:-9999px}.skip:focus{left:1rem;top:1rem;background:#fff;padding:1rem;z-index:99}.header{min-height:76px;padding:12px max(24px,calc((100vw - var(--max))/2));display:flex;align-items:center;gap:26px;background:#fff;position:sticky;top:0;z-index:20;border-bottom:1px solid var(--line)}.brand{display:grid;text-decoration:none;line-height:1}.brand b{font-size:1.35rem;letter-spacing:.2em}.brand small{font-size:.55rem;color:var(--muted);margin-top:7px}.header nav{margin-left:auto}.header ul{display:flex;gap:23px;list-style:none;margin:0;padding:0}.header a{text-decoration:none}.contact,.button{background:var(--gold);padding:.7rem 1rem;text-decoration:none;font-weight:700}.menu{display:none}.hero{min-height:650px;background:linear-gradient(90deg,rgba(5,20,34,.9),rgba(5,20,34,.4),transparent),url('../images/hero-trade.webp') center/cover;color:#fff;display:flex;align-items:center}.hero>div,.section,.footer{width:min(calc(100% - 48px),var(--max));margin:auto}.hero h1{font:clamp(3rem,6vw,5.6rem)/1.06 Georgia,"Songti SC",serif;max-width:820px;margin:.5rem 0}.hero>div>p:not(.kicker){max-width:680px;font-size:1.15rem}.kicker{color:var(--gold);font-size:.75rem;letter-spacing:.16em;font-weight:700}.section{padding:90px 0}.intro{display:grid;grid-template-columns:1fr 1.2fr;gap:8vw}.section h2,.cta h2{font:clamp(2rem,4vw,3.8rem)/1.15 Georgia,"Songti SC",serif}.section-head{max-width:700px}.dark{width:100%;max-width:none;background:var(--navy);color:#fff;padding-left:max(24px,calc((100vw - var(--max))/2));padding-right:max(24px,calc((100vw - var(--max))/2))}.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}.cards article{background:#fff}.cards article>a{display:block;text-decoration:none;padding-bottom:18px}.cards img{width:100%;aspect-ratio:4/3;object-fit:cover}.cards h2,.cards h3,.cards p{margin-left:18px;margin-right:18px}.cards h2,.cards h3{font-size:1.25rem}.cards p{color:var(--muted);font-size:.9rem}.page-hero{min-height:420px;padding:70px max(24px,calc((100vw - var(--max))/2));display:flex;align-items:end;color:#fff;background:linear-gradient(90deg,rgba(5,20,34,.9),rgba(5,20,34,.25)),url('../images/hero-trade.webp') center/cover}.page-hero h1{font:clamp(2.5rem,5vw,4.5rem)/1.1 Georgia,"Songti SC",serif}.prose{width:min(calc(100% - 48px),820px);margin:auto;padding:70px 0}.prose h2{font:2rem Georgia,"Songti SC",serif}.breadcrumbs,.meta{font-size:.82rem;color:var(--muted);margin-bottom:2rem}.cta{padding:70px max(24px,calc((100vw - var(--max))/2));background:var(--wine);color:#fff;display:flex;justify-content:space-between;align-items:end;gap:40px}.cta>div{max-width:760px}footer{background:#091a2a;color:#dce4eb;padding-top:65px}.footer{display:grid;grid-template-columns:1.2fr 1fr .7fr;gap:40px}.footer a{color:white}.footer ul{list-style:none;padding:0}.copy{border-top:1px solid #26394a;margin-top:45px;padding:18px;text-align:center;font-size:.8rem}@media(max-width:900px){.menu{display:block;margin-left:auto}.header nav{display:none;order:5;width:100%}.header nav.open{display:block}.header{flex-wrap:wrap}.header ul{flex-direction:column}.contact{display:none}.cards{grid-template-columns:repeat(2,1fr)}}@media(max-width:600px){.hero{min-height:560px}.hero h1{font-size:2.8rem}.section{padding:60px 0}.intro,.footer,.cards{grid-template-columns:1fr}.cta{align-items:start;flex-direction:column}}
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