:root{--bg:#f5fbff;--paper:#fff;--soft:#eaf7fc;--pale:#dff5fb;--cyan:#25c8d1;--blue:#1787db;--navy:#174b78;--ink:#173b60;--text:#2d4359;--muted:#687f93;--line:#dcebf3;--footer:#123653;--shadow:0 16px 40px rgba(23,75,120,.075)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.8 Arial,'PingFang SC','Microsoft YaHei',sans-serif;overflow-x:hidden}body.drawer-open{overflow:hidden}a{color:inherit;text-decoration:none}a:hover{color:var(--blue)}button{font:inherit;cursor:pointer}img{max-width:100%}.shell{width:min(1160px,calc(100% - 48px));margin-inline:auto}.skip{position:absolute;top:-100px;left:12px;z-index:200;background:#fff;padding:10px}.skip:focus{top:10px}h1,h2,h3,p{margin-top:0}h1,h2,h3{color:var(--ink);line-height:1.38}h1{font-size:clamp(30px,3.5vw,40px);letter-spacing:-.025em}h2{font-size:26px}h3{font-size:19px}p{margin-bottom:1.15em}strong{color:var(--ink)}.eyebrow{color:#128ba9;font-size:12px;font-weight:800;letter-spacing:.13em;text-transform:uppercase}.lead{font-size:17px;color:#516a81;max-width:740px}.muted{color:var(--muted)}.site-header{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.97);border-bottom:1px solid 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small{font-size:12px;color:var(--muted)}.drawer-group{border-bottom:1px solid var(--line);padding:11px 0}.drawer-group b{display:block;color:#128ba9;font-size:13px;margin-bottom:3px}.drawer-group a{display:block;padding:6px 4px;font-size:15px}.hero{padding:62px 0 40px}.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:50px;align-items:center}.hero h1{margin:12px 0 20px}.hero .lead{margin-bottom:25px}.hero-meta{display:flex;flex-wrap:wrap;gap:8px;margin:24px 0}.pill{display:inline-block;border:1px solid var(--line);background:#fff;border-radius:20px;padding:5px 13px;font-size:13px;color:var(--navy)}.media{width:100%;min-height:210px;display:flex;justify-content:center;align-items:center;overflow:hidden;border-radius:16px;background:linear-gradient(135deg,#dff5fb,#eaf7fc);border:1px solid var(--line)}.media 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@media(max-width:1120px){.desktop-nav{gap:11px}.desktop-nav a{font-size:13px}.nav-wrap{gap:13px}.brand img{max-width:140px}}
@media(max-width:980px){.desktop-nav{display:none}.menu-toggle{display:block}.nav-wrap{justify-content:space-between;min-height:60px}.brand{position:absolute;left:50%;transform:translateX(-50%)}.brand img{height:29px;max-width:140px}.brand-name{font-size:16px}.brand-name small{font-size:8px}.brand-emblem{width:30px;height:30px}.nav-action{min-height:40px;font-size:12px;padding:0 12px}.hero-grid{gap:30px}.reading-grid{grid-template-columns:1fr}.side-note{position:static}.grid-3{grid-template-columns:repeat(2,1fr)}}
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@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}