@charset "UTF-8";
:root{--sky:#48BAF1;--sky-soft:#BFEAFF;--sky-pale:#E9F8FF;--navy:#14344F;--navy-deep:#102B42;--action-blue:#116A9B;--action-hover:#0D5278;--paper:#FAFCFE;--paper-white:#FFF;--fog:#F2F7FA;--border:#DBEAF2;--title:#173754;--body:#354A59;--muted:#416A80;--coral:#F08B82;--mint:#7BC7B4;--lavender:#AD9CDE;--apricot:#E2B36A}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--body);font:16px/1.78 -apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft Yahei",sans-serif;padding-bottom:0}a{color:var(--action-blue);text-decoration:none}a:hover{text-decoration:underline;color:var(--action-hover)}button,input,textarea,select{font:inherit}button,a,input,textarea,select{outline-offset:3px}button{cursor:pointer}img{max-width:100%;height:auto;display:block}h1,h2,h3{color:var(--title);line-height:1.36;letter-spacing:-.025em}h1{font-size:clamp(27px,3vw,39px);margin:12px 0 20px}h2{font-size:clamp(21px,2.3vw,26px);margin:0 0 20px}h3{font-size:18px;margin:12px 0}p{margin:12px 0 20px} .container{width:min(1260px,calc(100% - 64px));margin:auto}.narrow{max-width:800px}.section{padding-top:48px;padding-bottom:64px}.skip{position:absolute;left:-999px;top:0;background:#fff;z-index:100}.skip:focus{left:10px}.topbar{background:#fff;border-bottom:1px solid 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var(--border)}.rail-scroll{display:flex;gap:30px;overflow-x:auto;scrollbar-width:thin;align-items:center;min-height:42px}.rail-scroll a{flex:none;color:var(--navy);font-size:13px;font-weight:650}.drawer-mask{position:fixed;inset:0;background:#102b4299;z-index:75}.drawer{position:fixed;inset:0 0 0 auto;width:min(390px,88vw);background:#fff;z-index:76;padding:25px;overflow-y:auto;transform:translateX(110%);transition:transform .25s}.drawer.open{transform:translateX(0)}.drawer button{float:right;padding:8px 12px;border:1px solid var(--border);border-radius:9px;background:white}.drawer-links{display:grid;grid-template-columns:1fr 1fr;gap:5px 10px}.drawer-links a{padding:10px 6px;border-bottom:1px solid var(--border)}.hero{margin:35px 0 26px;border-radius:18px;min-height:350px;overflow:hidden;background:linear-gradient(115deg,#d4f1ff 2%,#ecf9ff 55%,#a9dff8 100%);display:grid;grid-template-columns:44% 56%;border:1px solid var(--sky-soft)}.hero-text{padding:53px 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