*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#F4F8FC;color:#1C3A56;font:15px/1.75 system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;overflow-x:hidden}a{color:#0E4A9E;text-decoration:none}a:hover{text-decoration:underline}button,input{font:inherit}button{cursor:pointer}a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid #0E4A9E;outline-offset:2px}h1,h2,h3,p{margin-top:0}h1{font-size:24px;line-height:1.3;color:#0E2A44}h2{font-size:20px;color:#0E2A44;line-height:1.4}h3{font-size:16px;color:#0E2A44}.topbar{position:fixed;z-index:25;inset:0 0 auto;height:62px;background:#E8F1FA;border-bottom:3px solid #1E6FD9}.topinner{max-width:960px;margin:auto;height:100%;padding:0 16px;display:flex;align-items:center;justify-content:space-between;gap:12px}.brand{display:flex;align-items:center;gap:8px;min-width:114px;color:#0E2A44}.brand strong{display:block;font-size:16px;line-height:1.2}.brand small{display:block;font-size:12px;letter-spacing:.12em;line-height:1.3}.logomark{display:inline-flex;align-items:center;justify-content:center;min-width:28px;height:28px}.logo{height:28px;max-width:72px;width:auto;object-fit:contain;object-position:center}.topcapsule{background:white;border:1px solid rgba(30,111,217,.26);border-radius:99px;padding:4px 20px;height:34px;line-height:24px;color:#0E2A44;white-space:nowrap}.topactions{display:flex;gap:8px;flex-shrink:0}.topbutton,.layerhead button{border:1px solid #6BA8F0;background:#fff;color:#0E2A44;border-radius:10px;padding:8px 12px;min-height:44px;white-space:nowrap}.windowbar{position:fixed;top:62px;inset-inline:0;height:40px;z-index:20;background:#F0F7FD;border-bottom:1px solid #CFE2F5}.windowinner{max-width:960px;margin:auto;display:flex;gap:26px;align-items:center;height:100%;padding:0 16px}.windowlink{font-size:13px;display:flex;align-items:center;gap:8px;color:#3D5C78}.windowlink i{height:14px;width:14px;border:2px solid #6BA8F0;border-radius:0 0 0 4px;display:inline-block}.windowlink.active{color:#0E2A44;font-weight:700}.windowlink.active i{background:#1E6FD9;box-shadow:0 0 9px rgba(30,111,217,.5)}.content{max-width:960px;margin:auto;padding:130px 16px 65px;min-height:70vh}.wrap{max-width:960px;padding:0 16px;margin:auto}.crumb{font-size:13px;margin-bottom:24px;color:#6A88A0}.crumb a{color:#3D5C78}.eyebrow{font-size:13px;letter-spacing:.14em;color:#1E6FD9;font-weight:750}.hero{max-width:750px;padding:12px 0 22px}.hero h1{max-width:720px}.hero .intro{font-size:16px;line-height:1.9;max-width:750px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;border-radius:12px;padding:7px 18px;white-space:nowrap;border:1px solid transparent;transition:box-shadow .18s,filter .18s;color:#F4F8FC;background:linear-gradient(135deg,#6BA8F0 0%,#1E6FD9 54%,#0E4A9E 100%);box-shadow:0 6px 16px rgba(30,111,217,.24);font-size:14px}.btn:hover{color:#fff;text-decoration:none;filter:brightness(1.08);box-shadow:0 0 0 3px rgba(107,168,240,.5),0 10px 24px rgba(14,74,158,.24)}.btn:active{filter:brightness(1.06);box-shadow:0 0 0 4px rgba(226,178,58,.36),0 0 22px rgba(30,111,217,.5)}.btn.secondary{background:#fff;color:#0E2A44;border-color:#BBD4EE;box-shadow:none}.section{margin:24px 0 34px}.section>h2{margin-bottom:16px}.paper{border:1px solid rgba(30,111,217,.26);border-radius:14px;background:#fff;box-shadow:0 12px 28px rgba(14,42,68,.08);padding:22px}.paper p:last-child{margin-bottom:0}.layout-offset{display:grid;grid-template-columns:1fr 1fr;align-items:start;gap:20px}.layout-offset>*:nth-child(even){margin-top:35px}.layout-horizontal{display:flex;align-items:center;gap:22px}.layout-horizontal .copy{flex:1;min-width:0}.layout-wrap .media{float:right;margin:0 0 12px 20px}.layout-page{border-left:6px solid #1E6FD9;background:#fff;padding:24px;border-radius:14px}.layout-status{border-top:5px solid #1E6FD9;border-radius:14px;padding:22px;background:#fff}.layout-stack{background:#E8F1FA;border-radius:14px;padding:24px}.layout-columns{display:grid;grid-template-columns:2fr 1fr;gap:20px}.layout-columns>aside{background:#E8F1FA;border-radius:14px;padding:20px}.media{display:flex;justify-content:center;align-items:center;background:#F4F8FC;border-radius:14px;border:1px solid #D9E7F4;width:min(240px,100%);height:160px;flex-shrink:0;overflow:hidden}.media.tall{height:320px}.media.wide{width:100%;height:200px}.media.medium{height:168px}.media img{display:block;width:100%;height:100%;object-fit:contain;object-position:center}.mediafig{margin:0}.mediafig figcaption{font-size:13px;color:#3D5C78;margin:6px 0 0}.info-list{padding-left:20px}.info-list li{margin:10px 0}.article-section{margin:18px 0 0;padding:23px;background:#fff;border-left:3px solid #6BA8F0;border-radius:12px}.article-section:nth-of-type(even){border-left-color:#E2B23A;background:#F7FBFE}.article-section p{margin:0}.nextlinks{display:flex;gap:10px;flex-wrap:wrap;margin:26px 0}.nextlinks a{border:1px solid #BBD4EE;border-radius:10px;background:#fff;padding:8px 14px}.home-feature{margin:35px 0;padding:23px;background:#fff;border:1px solid #D4E5F5;border-radius:14px}.home-feature:nth-of-type(even){background:#F7FBFE}.home-feature h2{margin-bottom:12px}.home-feature .layout-horizontal,.home-feature .layout-wrap{min-height:170px}.home-feature .layout-offset .paper{box-shadow:none}.homefeaturelead{margin:0 0 12px}.faq-item{padding:18px 22px;background:white;border-radius:14px;margin:14px 0;border:1px solid #CFE2F5}.faq-item h2{font-size:16px;margin-bottom:10px}.faq-item p{margin:0}.footer{background:#0E2A44;color:#E8F1FA;border-top:3px solid #1E6FD9;padding:35px 0 30px;font-size:13px}.footerbrand{display:flex;align-items:center;gap:10px;margin-bottom:22px}.footerbrand strong{font-size:16px}.footergrid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}.footer h2{color:#E8F1FA;font-size:15px}.footerlinks{display:flex;gap:4px 14px;flex-wrap:wrap}.footer a{color:#DDEEFF}.footnote{margin-top:30px;color:#E8F1FA}.copyright{opacity:.85}.backdrop{position:fixed;inset:0;background:rgba(14,42,68,.43);z-index:29}.backdrop[hidden]{display:none}.locked{overflow:hidden}.menu-layer,.search-layer{position:fixed;z-index:30;visibility:hidden;pointer-events:none;overflow:auto;max-height:70dvh;box-shadow:0 12px 28px rgba(14,42,68,.15)}.menu-layer.shown,.search-layer.shown{visibility:visible;pointer-events:auto}.menu-layer{top:70px;left:16px;width:min(560px,calc(100vw - 32px));background:#fff;border-left:8px solid #1E6FD9;border-radius:14px;padding:16px 20px}.layerhead{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}.layerbrand{display:flex;align-items:center;gap:8px}.menugroup{border-top:1px solid #DFEBF7;padding:14px 0}.menugroup h2{font-size:16px;margin:0 0 12px}.menulinks{display:grid;grid-template-columns:1fr 1fr;gap:10px}.menulinks a{border:1px solid #D9E7F4;border-radius:10px;padding:9px;display:block}.menulinks strong{display:block;font-size:14px}.menulinks small{display:block;color:#3D5C78;font-size:12px;line-height:1.6}.search-layer{right:16px;top:70px;background:#E8F1FA;border:1px solid #BFD8EF;border-radius:14px;padding:20px;width:min(420px,calc(100vw - 32px));color:#0E2A44}.search-layer input{width:100%;height:44px;background:#fff;border:1px solid #6BA8F0;border-radius:10px;padding:8px 12px;margin:8px 0 12px}.searchresults{display:flex;gap:8px;flex-wrap:wrap}.searchresults a{padding:7px 13px;background:#fff;border-radius:9px;border:1px solid #D0E0EF}.searchresults a[hidden],.search-empty[hidden]{display:none}.mobilebottom{display:none}@media(max-width:650px){.topcapsule{display:none}.topbar .topinner{gap:6px}.topbutton{padding:8px;min-width:44px}.windowbar{display:none}.content{padding-top:83px;padding-bottom:90px}.hero{padding-top:4px}.layout-offset,.layout-columns{display:block}.layout-offset>*:nth-child(even){margin-top:12px}.layout-horizontal{display:block}.layout-horizontal .media{margin:16px auto}.layout-wrap .media{float:none;margin:12px auto}.layout-page,.paper,.home-feature{padding:18px}.media{max-width:100%}.footer{padding-bottom:85px}.footergrid{grid-template-columns:1fr 1fr;gap:22px 16px}.mobilebottom{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;bottom:0;left:0;right:0;z-index:24;background:#E8F1FA;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);border-top:1px solid #A9C8E9}.mobilebottom a{display:flex;justify-content:center;align-items:center;color:#3D5C78;font-size:13px}.mobilebottom a.active{color:#0E2A44;border-top:3px solid #1E6FD9;box-shadow:0 -5px 12px rgba(30,111,217,.15);font-weight:700}.search-layer{inset:0;width:100vw;max-height:100dvh;border-radius:0;background:#0E2A44;color:#E8F1FA;padding:26px 16px}.search-layer a{color:#0E2A44}.menu-layer{top:68px;max-height:calc(100dvh - 84px)}.menulinks{grid-template-columns:1fr}.footerlinks{gap:4px 9px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}