*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#fff;color:#1E2A3A;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",Arial,sans-serif;line-height:1.75;overflow-x:hidden}a{color:inherit;text-decoration:none}img{display:block;max-width:100%;height:auto}button,input{font:inherit}.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);border-bottom:1px solid rgba(0,51,160,.14);backdrop-filter:blur(14px)}.nav-wrap{max-width:1280px;height:72px;margin:auto;padding:0 18px;display:flex;align-items:center;gap:20px}.brand{display:inline-flex;align-items:center;min-width:72px;font-size:24px;font-weight:900;color:#0033A0}.brand img{max-width:118px;max-height:42px;object-fit:contain}.desktop-nav{display:flex;gap:6px;align-items:center;flex:1}.desktop-nav a{padding:10px 12px;border-radius:999px;font-weight:700;white-space:nowrap}.desktop-nav a:hover,.desktop-nav a.is-active{background:#EEF1F6;color:#0033A0}.nav-actions{display:flex;align-items:center;gap:8px}.icon-btn,.small-link,.app-link,.btn{min-height:44px;border-radius:999px;border:1px solid rgba(0,51,160,.22);padding:9px 16px;background:#fff;color:#0033A0;font-weight:800;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;white-space:nowrap}.app-link,.btn.primary{color:#fff;border:none;background:linear-gradient(135deg,#0052CC 0%,#0033A0 50%,#002066 100%);box-shadow:0 10px 28px rgba(0,51,160,.16)}.site-main{min-height:60vh}.container{width:min(1280px,calc(100% - 36px));margin:auto}.hero{padding:54px 0 30px}.hero-grid{display:grid;grid-template-columns:minmax(0,1.9fr) minmax(300px,1fr);gap:30px;align-items:center}.hero-art{background:#F5F7FA;border:1px solid rgba(0,51,160,.14);border-radius:20px;min-height:420px;display:flex;align-items:center;justify-content:center;overflow:hidden}.hero-art img{width:100%;height:100%;object-fit:contain}.hero-copy .eyebrow,.eyebrow{color:#0033A0;font-weight:900;letter-spacing:.08em;text-transform:uppercase}.hero-copy h1,.page-hero h1{font-size:clamp(36px,5vw,68px);line-height:1.08;margin:.12em 0 .35em;color:#0A1628}.hero-copy p{font-size:18px;color:#4A5568}.btn-row{display:flex;flex-wrap:wrap;gap:10px;margin:24px 0}.btn.secondary{background:#fff}.mini-list{display:grid;gap:10px;margin-top:24px}.mini-list article{padding:14px 0;border-top:1px solid rgba(0,51,160,.14)}.quick-strip{border-block:1px solid rgba(0,51,160,.14);background:#F5F7FA}.quick-scroll{display:flex;gap:10px;padding:12px 0;overflow:auto}.quick-scroll a{flex:none;padding:8px 14px;border-radius:999px;border:1px solid rgba(0,51,160,.14);background:#fff;color:#0033A0;font-weight:700}.section{padding:56px 0}.section.alt{background:#F5F7FA}.section-head{display:flex;gap:20px;justify-content:space-between;align-items:end;margin-bottom:24px}.section-head h2{font-size:clamp(26px,3vw,40px);margin:0;color:#0A1628}.section-head p{max-width:680px;margin:0;color:#4A5568}.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.cards.four{grid-template-columns:repeat(4,minmax(0,1fr))}.card{background:#fff;border:1px solid rgba(0,51,160,.14);border-radius:16px;padding:22px;box-shadow:0 12px 36px rgba(0,33,102,.06)}.card h3{margin-top:0;color:#0A1628}.card p:last-child{margin-bottom:0}.pill-grid{display:flex;flex-wrap:wrap;gap:10px}.pill{padding:12px 16px;border-radius:999px;background:#EEF1F6;border:1px solid rgba(0,51,160,.14)}.feature-split{display:grid;grid-template-columns:1.2fr .8fr;gap:24px;align-items:start}.media-box{background:#EEF1F6;border-radius:18px;overflow:hidden;min-height:260px;display:flex;align-items:center;justify-content:center}.media-box img{width:100%;height:100%;object-fit:contain}.number-list{display:grid;gap:14px}.number-item{display:grid;grid-template-columns:70px 1fr;gap:18px;padding:18px;border-bottom:1px solid rgba(0,51,160,.14)}.number-item .num{font-size:38px;font-weight:900;color:#0052CC;line-height:1}.track{display:grid;gap:14px}.track article{position:relative;padding:18px 20px 18px 28px;border-left:3px solid #0052CC;background:#fff;border-radius:0 14px 14px 0}.page-hero{padding:58px 0 26px;background:linear-gradient(180deg,#F5F7FA,#fff)}.page-hero p{max-width:860px;font-size:18px;color:#4A5568}.layout-magazine{display:grid;grid-template-columns:1.45fr .85fr;gap:26px}.story{padding:28px 0;border-bottom:1px solid rgba(0,51,160,.14)}.story h2,.story h3{color:#0A1628}.story p{margin:.65em 0}.quote{padding:24px;border-left:4px solid #0052CC;background:#EEF1F6;border-radius:0 14px 14px 0}.tag{display:inline-block;font-size:13px;font-weight:900;color:#0033A0;background:#EEF1F6;padding:4px 9px;border-radius:999px}.index-rail{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.index-rail article{padding:22px;border:1px solid rgba(0,51,160,.14);border-radius:16px}.faq details{border-bottom:1px solid rgba(0,51,160,.14);padding:18px 0}.faq summary{cursor:pointer;font-weight:900;color:#0A1628}.site-footer{background:#0A1628;color:#A0AEC0;padding:54px 0 90px}.footer-inner{width:min(1280px,calc(100% - 36px));margin:auto}.footer-brand{display:flex;align-items:center;gap:18px;margin-bottom:34px}.footer-brand img{max-width:120px;max-height:48px}.footer-brand b{display:block;font-size:24px;color:#fff}.footer-brand span{display:block;color:#4D7FE0;font-weight:700}.footer-brand p{max-width:620px}.footer-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}.footer-grid h2{font-size:16px;color:#fff}.footer-grid a{display:block;padding:5px 0}.legal-note{border-top:1px solid rgba(255,255,255,.12);margin-top:30px;padding-top:22px}.overlay{position:fixed;inset:0;z-index:80;background:rgba(10,22,40,.48);visibility:hidden;opacity:0;pointer-events:none;transition:.2s}.overlay.is-open{visibility:visible;opacity:1;pointer-events:auto}.channel-panel{position:fixed;z-index:90;top:0;right:0;height:100dvh;width:min(460px,88vw);background:#fff;transform:translateX(102%);visibility:hidden;pointer-events:none;transition:.22s;overflow:auto;box-shadow:-20px 0 60px rgba(0,33,102,.18)}.channel-panel.is-open{transform:none;visibility:visible;pointer-events:auto}.panel-head{position:sticky;top:0;background:#fff;display:flex;align-items:center;justify-content:space-between;padding:16px 18px;border-bottom:1px solid rgba(0,51,160,.14)}.channel-groups{padding:12px 18px 32px}.channel-groups section{padding:16px 0}.channel-groups h2{font-size:15px;color:#718096}.channel-groups a{display:block;padding:12px;border-radius:12px}.channel-groups a:hover{background:#F5F7FA}.channel-groups b{display:block;color:#0A1628}.channel-groups span{display:block;color:#718096;font-size:14px}.search-panel{position:fixed;z-index:95;top:72px;left:0;right:0;background:#fff;border-bottom:1px solid rgba(0,51,160,.14);box-shadow:0 20px 50px rgba(0,33,102,.14);visibility:hidden;opacity:0;pointer-events:none;transform:translateY(-10px);transition:.18s}.search-panel.is-open{visibility:visible;opacity:1;pointer-events:auto;transform:none}.search-inner{width:min(1100px,calc(100% - 36px));margin:auto;padding:24px 0 30px}.search-top{display:flex;justify-content:space-between;align-items:center}.search-box{display:block;margin:18px 0}.search-box span{display:block;font-size:13px;color:#718096}.search-box input{width:100%;padding:14px;border:1px solid rgba(0,51,160,.32);border-radius:12px;outline:none}.search-results{display:flex;flex-wrap:wrap;gap:10px}.search-results a{padding:10px 14px;background:#EEF1F6;border-radius:999px}.mobile-only,.mobile-bottom{display:none}.no-scroll{overflow:hidden}.visually-muted{color:#718096}.notice{padding:18px;background:#EEF1F6;border:1px solid rgba(0,51,160,.14);border-radius:14px}.app-showcase{display:grid;grid-template-columns:.8fr 1.2fr;gap:28px;align-items:center}.app-phone{border-radius:28px;background:#EEF1F6;padding:18px;min-height:420px;display:flex;align-items:center;justify-content:center}.app-phone img{max-height:520px;object-fit:contain}.editor-list{display:grid;gap:16px}.editor-list article{padding:20px;border:1px solid rgba(0,51,160,.14);border-radius:16px;background:#fff}.editor-list b{color:#0033A0}.support-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.support-grid article{padding:22px;background:#fff;border:1px solid rgba(0,51,160,.14);border-radius:16px}.toc-links{display:flex;flex-wrap:wrap;gap:10px}.toc-links a{padding:8px 12px;border-radius:999px;background:#EEF1F6;color:#0033A0;font-weight:700}.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(0,82,204,.35);outline-offset:3px}@media(max-width:980px){.desktop-nav{display:none}.desktop-only{display:none!important}.mobile-only{display:inline-flex}.nav-wrap{justify-content:space-between;height:64px}.nav-actions{margin-left:auto}.hero-grid,.feature-split,.layout-magazine,.app-showcase{grid-template-columns:1fr}.hero{padding-top:34px}.hero-art{min-height:280px}.cards,.cards.four{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.search-panel{top:64px;bottom:0;overflow:auto}.mobile-bottom{display:grid;position:fixed;z-index:45;left:0;right:0;bottom:0;grid-template-columns:repeat(5,1fr);background:#fff;border-top:1px solid rgba(0,51,160,.14);padding-bottom:env(safe-area-inset-bottom)}.mobile-bottom a{min-height:52px;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:800}.site-footer{padding-bottom:120px}}@media(max-width:620px){.container{width:min(100% - 30px,1280px)}.hero-copy h1,.page-hero h1{font-size:38px}.cards,.cards.four,.footer-grid,.support-grid,.index-rail{grid-template-columns:1fr}.section{padding:42px 0}.hero-art{min-height:220px}.number-item{grid-template-columns:52px 1fr}.number-item .num{font-size:30px}.brand{min-width:0}.brand img{max-width:96px}.nav-wrap{gap:8px;padding:0 12px}.app-link,.icon-btn{padding:8px 12px}.mobile-only.icon-btn{min-width:58px}.quick-scroll{padding-inline:15px;margin-inline:-15px}.section-head{align-items:start;flex-direction:column}.footer-brand{align-items:flex-start;flex-direction:column}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}