*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#F4F7FB;color:#344B60;font:16px/1.78 system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;overflow-x:hidden}a{color:inherit;text-decoration:none}a:hover{text-decoration:underline}button,input{font:inherit}button{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #73CEE6;outline-offset:3px}:root{--ink:#080E19;--night:#0E1727;--nav:#121F32;--nav-card:#1A2B40;--ocean:#173555;--brand-blue:#215CB0;--button-blue:#1A519F;--bright-blue:#4A9AE6;--ice:#73CEE6;--paper:#F4F7FB;--paper-blue:#E8F1FA;--warm-white:#FBF9F5;--card:#FFFFFF;--dark-title:#172C41;--dark-body:#344B60;--night-title:#FAFCFF;--night-body:#DAE5EF;--coral:#E18B79;--mint:#6DBCB1;--amber:#E6B46F;--lilac:#AB9CDB}.container{max-width:1240px;margin:auto;padding:0 30px}.skip{position:absolute;left:-10000px;z-index:99}.skip:focus{left:12px;top:12px;background:white;padding:12px}.eyebrow{background:#080E19;color:#DAE5EF;font-size:12px}.eyebrow-inner{display:flex;justify-content:space-between;min-height:32px;align-items:center;gap:12px}.eyebrow a{margin-left:14px}.site-header{background:#121F32;color:white;position:relative;z-index:10}.header-inner{display:flex;align-items:center;gap:26px;min-height:72px}.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;color:#FAFCFF}.brand-monogram{display:grid;place-items:center;background:#73CEE6;color:#080E19;border-radius:9px;font-size:25px;font-weight:800;width:44px;height:44px}.brand b{display:block;font-size:23px;line-height:1.2;letter-spacing:1px}.brand small{display:block;font-size:10px;color:#DAE5EF;line-height:1.5;letter-spacing:1.5px}.brand-logo{width:148px;height:45px;object-fit:contain}.top-nav{display:flex;align-items:center;gap:20px;flex:1;justify-content:center}.top-nav a{padding:22px 2px 18px;border-bottom:3px solid transparent;font-size:15px}.top-nav a[aria-current=page],.top-nav a:hover{border-color:#73CEE6;color:#FAFCFF}.header-actions{display:flex;align-items:center;gap:12px;white-space:nowrap}.menu-toggle{border:1px solid #6382A1;background:#1A2B40;color:white;border-radius:9px;padding:9px 14px;min-height:44px}.search-shortcut{padding:7px;min-height:44px}.menu-overlay{position:fixed;inset:0;background:#050914b3;z-index:20}.menu-panel{position:fixed;z-index:21;right:0;top:0;height:100dvh;overflow:auto;width:min(670px,94vw);padding:25px 28px 45px;background:#121F32;color:#FAFCFF;box-shadow:-15px 0 45px #0007}.menu-head{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #425c77;padding-bottom:15px}.menu-head strong{font-size:24px}.menu-head button{background:#E8F1FA;color:#172C41;padding:8px 16px;border:none;border-radius:8px;min-height:44px}.menu-group{margin-top:22px}.menu-group h3{font-size:15px;color:#73CEE6;margin:0 0 9px}.menu-links{display:flex;flex-wrap:wrap;gap:8px}.menu-links a{border-radius:7px;background:#1A2B40;padding:7px 12px;font-size:14px}.menu-open{overflow:hidden}.intro-hero{background:linear-gradient(120deg,#0E1727,#173555);color:#FAFCFF}.hero-grid{display:grid;grid-template-columns:44% 56%;align-items:center;min-height:350px;padding-top:25px;padding-bottom:25px}.hero-copy{padding:12px 28px 12px 0}.eyeline{font-size:12px;text-transform:uppercase;letter-spacing:2px;font-weight:750;color:#73CEE6}.hero-copy h1{font-size:clamp(28px,3.1vw,39px);line-height:1.3;margin:12px 0 16px;color:white}.hero-copy p{color:#DAE5EF;max-width:460px}.hero-art{height:305px;border-radius:14px;overflow:hidden}.hero-art img,.media-frame img{width:100%;height:100%;object-fit:contain}.image-fallback{display:flex;align-items:center;justify-content:center;min-height:100%;background:radial-gradient(circle at 75% 28%,#2f6182,#152b42 65%,#0E1727);color:#DAE5EF;text-align:center;padding:25px;font-weight:650;letter-spacing:1px}.hero-art .image-fallback{height:100%}.btn{display:inline-flex;justify-content:center;align-items:center;min-height:44px;padding:9px 18px;border-radius:9px;background:#1A519F;color:#fff;font-weight:650;line-height:1.4;margin:6px 8px 6px 0}.btn.light{background:#73CEE6;color:#0E1727}.btn:hover{text-decoration:none;filter:brightness(1.1)}.page-content{padding-top:38px;padding-bottom:66px}.block{margin:0 0 52px}.block-header{display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:17px}.block-header h2{color:#172C41;font-size:clamp(21px,2.1vw,27px);line-height:1.45;margin:0}.block-header a,.text-link{color:#215CB0;font-weight:650;font-size:14px}.home-layout{display:grid;grid-template-columns:188px minmax(0,1fr);gap:26px}.rail{background:#E8F1FA;border:1px solid #d8e3f1;border-radius:12px;padding:16px;height:max-content;position:sticky;top:20px}.rail h2{font-size:14px;color:#173555}.rail a{display:block;padding:5px 0;font-size:14px;border-bottom:1px solid #dce6ef}.story-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:17px}.story{background:white;padding:20px 19px;border-radius:12px;border:1px solid #dce5ee;min-width:0}.story small{color:#215CB0;font-weight:750}.story h3{margin:8px 0 10px;color:#172C41;font-size:18px;line-height:1.5}.story p{font-size:14px;line-height:1.8;margin:0 0 14px}.topic-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.topic-grid a{display:block;background:#E8F1FA;color:#173555;padding:13px;border-radius:8px;font-weight:650}.featured{display:grid;grid-template-columns:1fr 1fr;gap:23px;background:#fff;padding:21px;border-radius:14px;border:1px solid #dce5ee}.featured:nth-of-type(even){background:#e8f1fa}.media-frame{height:215px;border-radius:10px;overflow:hidden;background:#0E1727}.feature-copy h3{font-size:22px;line-height:1.45;margin:8px 0;color:#172C41}.feature-copy p{font-size:15px;line-height:1.85}.featured .image-fallback{font-size:18px}.compact-list{list-style:none;padding:0;margin:0}.compact-list li{display:flex;gap:16px;padding:12px 0;border-bottom:1px solid #d8e2ec;align-items:baseline}.compact-list li b{color:#215CB0;font-variant-numeric:tabular-nums}.compact-list a{color:#172C41;font-weight:650}.section-surface{border-radius:15px;padding:25px;background:#E8F1FA}.section-surface.dark{background:#121F32;color:#DAE5EF}.section-surface.dark h2,.section-surface.dark .story h3{color:#172C41}.page-hero{padding:43px 0;background:linear-gradient(115deg,#121F32,#173555);color:#FAFCFF}.page-hero h1{margin:6px 0 10px;line-height:1.3;font-size:clamp(26px,3vw,37px)}.page-hero p{color:#DAE5EF;margin:0;max-width:780px}.breadcrumbs{font-size:13px;margin:0 0 15px;color:#73CEE6}.page-main{padding-top:37px;padding-bottom:65px}.read-width{max-width:770px}.prose{font-size:16px;line-height:1.85;color:#344B60}.prose h2{margin-top:35px;margin-bottom:10px;color:#172C41;font-size:24px}.prose p{margin:0 0 21px}.prose li{margin-bottom:10px}.notice{padding:15px 18px;background:#E8F1FA;border-left:4px solid #215CB0;border-radius:7px;margin:24px 0}.article-meta{font-size:13px;color:#546b80;margin-bottom:23px}.tag{display:inline-block;border:1px solid #b8cddd;border-radius:20px;padding:3px 11px;font-size:12px;margin:4px 6px 4px 0}.search-form{display:flex;gap:10px;max-width:690px;margin:20px 0}.search-form input{flex:1;min-width:0;border:1px solid #b8cddd;border-radius:8px;padding:12px 15px;background:#fff}.search-form button{background:#1A519F;border:none;color:white;border-radius:8px;padding:8px 24px;min-height:44px}.pagination{display:flex;flex-wrap:wrap;gap:8px;margin-top:25px}.pagination a,.pagination strong{display:inline-block;padding:6px 13px;background:white;border:1px solid #cad9e8;border-radius:7px}.pagination strong{background:#1A519F;color:#fff}.footer{background:#0E1727;color:#DAE5EF;padding:40px 0 18px}.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:35px}.foot-grid h3{font-size:15px;color:#FAFCFF;margin:0 0 12px}.foot-grid a{display:block;padding:3px 0;font-size:14px}.footer-brand{font-size:24px;color:#FAFCFF;font-weight:750}.footer-brand small{font-size:11px}.foot-grid p{font-size:14px;max-width:470px}.foot-bottom{border-top:1px solid #314357;padding-top:18px;margin-top:22px;font-size:13px;display:flex;justify-content:space-between;gap:16px}.mobile-bottom{display:none}.method-list{padding-left:25px}.data-table{border-collapse:collapse;width:100%;background:white}.data-table th,.data-table td{border:1px solid #c7d4e3;padding:11px;text-align:left}.data-table th{background:#E8F1FA;color:#172C41}@media(max-width:1050px){.top-nav{gap:10px}.top-nav a{font-size:13px}.header-inner{gap:12px}.home-layout{display:block}.rail{position:static;margin:0 0 25px}.rail a{display:inline-block;margin-right:14px}.story-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:760px){.container{padding-left:17px;padding-right:17px}.eyebrow-inner{font-size:10px}.eyebrow a{margin-left:6px}.header-inner{min-height:66px}.top-nav{display:none}.brand b{font-size:19px}.brand-monogram{width:38px;height:38px}.search-shortcut span{display:none}.menu-toggle{font-size:13px;padding:8px 10px}.hero-grid{grid-template-columns:1fr;min-height:0;padding-top:30px;padding-bottom:25px}.hero-copy{padding:0}.hero-copy h1{font-size:29px}.hero-art{height:215px;margin-top:10px}.page-content{padding-top:24px}.block{margin-bottom:34px}.story-grid{grid-template-columns:1fr}.topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.featured{grid-template-columns:1fr;padding:16px;gap:12px}.media-frame{height:190px}.section-surface{padding:17px}.page-hero{padding:30px 0}.page-main{padding-top:25px}.foot-grid{grid-template-columns:1fr 1fr;gap:23px}.foot-grid>div:first-child{grid-column:1/-1}.foot-bottom{display:block;padding-bottom:70px}.mobile-bottom{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;bottom:0;left:0;right:0;z-index:9;background:#121F32;color:#FAFCFF;box-shadow:0 -4px 20px #0002;padding-bottom:env(safe-area-inset-bottom)}.mobile-bottom a{text-align:center;padding:11px 3px;font-size:13px;min-height:48px}.search-form{flex-direction:column}.search-form button{align-self:stretch}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}