*{box-sizing:border-box}html{scroll-behavior:smooth;overflow-x:hidden}body{margin:0;background:#F4F8FD;color:#243447;font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;overflow-x:hidden}.drawer-open{overflow:hidden}img,svg,video{max-width:100%}a{color:#1C63E8;text-underline-offset:3px}.shell{width:min(1220px,calc(100% - 40px));margin:0 auto}.site-header{position:sticky;top:0;z-index:9999;width:100%;background:rgba(247,251,255,.96);box-shadow:0 8px 24px rgba(16,48,84,.08);backdrop-filter:blur(14px)}.header-inner{max-width:1220px;min-height:72px;margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;gap:16px}.site-logo{display:flex;align-items:center;min-width:142px;text-decoration:none}.site-logo img,.logo-image{display:block;height:40px;width:auto;max-width:168px;object-fit:contain}.logo-text{font-size:24px;font-weight:900;color:#143250;white-space:nowrap}.nav-core{display:flex;align-items:center;gap:6px;white-space:nowrap;flex-wrap:nowrap}.nav-core a{color:#143250;padding:8px 12px;border-radius:999px;font-weight:700;text-decoration:none}.nav-core a.is-current,.nav-core a:hover{background:#E4F0FF;color:#1C63E8}.auth-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}.login-btn{height:42px;min-width:88px;padding:0 18px;display:inline-flex;align-items:center;justify-content:center;background:#1C63E8;color:#FFFFFF;border-radius:999px;text-decoration:none;font-weight:700;white-space:nowrap}.register-btn{height:42px;min-width:88px;padding:0 18px;display:inline-flex;align-items:center;justify-content:center;background:#FFFFFF;color:#143250;border:1px solid #C3D6F0;border-radius:999px;text-decoration:none;font-weight:700;white-space:nowrap}.mobile-header{display:none}.channel-bar{background:#fff;border-bottom:1px solid #E0EAF5}.channel-inner{width:min(1220px,calc(100% - 40px));margin:0 auto;display:flex;gap:22px;overflow-x:auto;white-space:nowrap;scrollbar-width:thin}.channel-inner a{color:#5B6B7C;text-decoration:none;font-size:14px;font-weight:700;padding:15px 0}.channel-inner a:hover{color:#1C63E8}.site-main{min-height:60vh}.hero,.page-hero{padding:76px 0 62px}.hero-grid,.split{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(360px,.92fr);gap:40px;align-items:center}.eyebrow{display:inline-flex;align-items:center;gap:8px;margin-bottom:16px;padding:7px 12px;border-radius:999px;background:#EAF3FF;color:#154FC0;font-size:14px;font-weight:800}.hero h1,.page-hero h1{margin:0;color:#143250;font-size:clamp(40px,5vw,52px);line-height:1.14;letter-spacing:-.02em}.lead{margin:22px 0 0;font-size:18px;line-height:1.85;color:#4F6173;max-width:760px}.hero-actions{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-top:28px}.primary-btn,.outline-btn{height:46px;display:inline-flex;align-items:center;justify-content:center;padding:0 22px;border-radius:999px;font-weight:800;text-decoration:none}.primary-btn{background:#1C63E8;color:#fff}.outline-btn{background:#fff;color:#143250;border:1px solid #C3D6F0}.section{padding:72px 0}.section.compact{padding:48px 0}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px}.section-head h2,.readable h2{margin:0;color:#143250;font-size:clamp(28px,3.2vw,38px);line-height:1.25}.section-head p{margin:0;color:#6A7988;max-width:620px;line-height:1.7}.grid-2,.grid-3,.grid-4{display:grid;gap:22px}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}.card,.soft-card,.topic-card,.note-card,.qa-item,.feedback-item,.step-item,.index-card{background:#fff;border:1px solid #DFEAF6;border-radius:18px;box-shadow:0 14px 34px rgba(16,48,84,.08)}.card,.soft-card,.note-card,.feedback-item,.step-item,.index-card{padding:24px}.card h3,.soft-card h3,.note-card h3,.step-item h3,.index-card h3{margin:0 0 10px;color:#143250;font-size:20px}.card p,.soft-card p,.note-card p,.step-item p,.index-card p{margin:0;color:#5B6B7C;line-height:1.78}.card-link,.text-link{display:inline-flex;margin-top:14px;color:#1C63E8;text-decoration:none;font-weight:800}.card-link:hover,.text-link:hover{text-decoration:underline}.media{position:relative;width:100%;max-width:100%;overflow:hidden;border-radius:18px;background:#EAF3FF;aspect-ratio:16/9}.media>img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;object-position:center center;display:block}.media.hero-media{min-height:280px}.media.content-media{min-height:242px}.media.card-media{height:176px;aspect-ratio:auto}.media-placeholder{display:grid;place-items:center;border:1px dashed #C3D6F0}.media-placeholder span{color:#7A8896;font-weight:700}.quick-scroll{display:flex;gap:12px;overflow-x:auto;padding:2px 0 12px;scrollbar-width:thin}.quick-scroll a{flex:0 0 auto;padding:11px 15px;border-radius:999px;background:#fff;border:1px solid #DCEAFB;text-decoration:none;color:#143250;font-weight:800}.quick-scroll a:hover{color:#1C63E8;border-color:#B8CEEA}.topic-card{overflow:hidden}.topic-card .topic-copy{padding:18px}.topic-card h3{margin:0 0 8px;color:#143250;font-size:18px}.topic-card p{margin:0;min-height:48px;color:#5B6B7C;font-size:14px;line-height:1.7}.topic-card .text-link{font-size:14px}.readable{width:min(860px,calc(100% - 40px));margin:0 auto}.readable p{font-size:17px;line-height:1.88;color:#33485C}.readable h2{margin-top:40px}.readable h3{margin:30px 0 10px;color:#143250;font-size:22px}.readable ul,.readable ol{padding-left:1.3em}.readable li{margin:10px 0;line-height:1.8}.notice{padding:20px 22px;border-radius:16px;background:#EAF3FF;border-left:4px solid #1C63E8;color:#35506B;line-height:1.8}.crumbs{padding-top:28px;font-size:14px;color:#7A8896}.crumbs a{color:#5B6B7C;text-decoration:none}.crumbs span{margin:0 8px}.feature-line{display:grid;grid-template-columns:72px 1fr;gap:18px;align-items:flex-start;padding:20px 0;border-bottom:1px solid #DCEAFB}.feature-line:last-child{border-bottom:0}.feature-num{width:52px;height:52px;display:grid;place-items:center;border-radius:16px;background:#EAF3FF;color:#1C63E8;font-weight:900}.feature-line h3{margin:0 0 8px;color:#143250}.feature-line p{margin:0;color:#5B6B7C;line-height:1.8}.timeline{border-left:2px solid #C3D6F0;margin-left:12px;padding-left:28px}.timeline article{position:relative;padding:0 0 30px}.timeline article:before{content:"";position:absolute;left:-36px;top:6px;width:14px;height:14px;border-radius:50%;background:#1C63E8;border:4px solid #EAF3FF}.timeline h3{margin:0 0 8px;color:#143250}.timeline p{margin:0;color:#5B6B7C;line-height:1.82}.qa-list{display:grid;gap:16px}.qa-item{padding:22px}.qa-item h3{margin:0 0 10px;color:#143250;font-size:19px}.qa-item p{margin:0;color:#526579;line-height:1.8}.feedback-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.feedback-item p{margin:0;color:#4D6175;line-height:1.8}.feedback-item strong{display:block;margin-top:12px;color:#143250;font-size:14px}.two-tone{display:grid;grid-template-columns:1fr 1fr;gap:22px}.two-tone>section{padding:28px;border-radius:18px;background:#fff;border:1px solid #DFEAF6}.two-tone h2{margin:0 0 14px;color:#143250}.two-tone p{margin:0 0 12px;line-height:1.8;color:#526579}.pill-list{display:flex;flex-wrap:wrap;gap:10px}.pill-list a,.pill-list span{padding:9px 13px;border-radius:999px;background:#EAF3FF;color:#143250;text-decoration:none;font-weight:700}.table-like{display:grid;gap:1px;background:#DCEAFB;border:1px solid #DCEAFB;border-radius:18px;overflow:hidden}.table-row{display:grid;grid-template-columns:180px 1fr;background:#fff}.table-row strong,.table-row span{padding:18px}.table-row strong{color:#143250;background:#F7FAFE}.table-row span{color:#526579;line-height:1.75}.steps{display:grid;gap:16px;counter-reset:step}.step-item{position:relative;padding-left:78px}.step-item:before{counter-increment:step;content:counter(step);position:absolute;left:22px;top:22px;width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:#1C63E8;color:#fff;font-weight:900}.related-row{display:flex;flex-wrap:wrap;gap:12px}.related-row a{padding:10px 14px;background:#fff;border:1px solid #DCEAFB;border-radius:12px;text-decoration:none;color:#143250;font-weight:700}.related-row a:hover{color:#1C63E8}.site-footer{background:#0E2338;color:#D5E6F6;margin-top:68px;padding:58px 0 28px}.footer-grid{display:grid;grid-template-columns:1.45fr 1fr 1fr 1fr;gap:34px}.footer-logo{display:inline-flex}.footer-logo-image{height:42px;width:auto;max-width:176px;object-fit:contain;filter:brightness(0) invert(1)}.footer-brand p{max-width:330px;line-height:1.8;color:#AFC5D8}.site-footer h2{font-size:16px;color:#fff;margin:4px 0 16px}.site-footer section>a{display:block;color:#D5E6F6;text-decoration:none;margin:10px 0;font-size:14px}.site-footer section>a:hover{color:#fff}.footer-bottom{display:flex;justify-content:space-between;gap:24px;border-top:1px solid rgba(213,230,246,.16);margin-top:34px;padding-top:22px}.footer-bottom p{margin:0;color:#9DB5C9;font-size:13px;line-height:1.7}.side-float{position:fixed;right:18px;top:50%;transform:translateY(-50%);z-index:1200;width:108px;display:grid;gap:8px}.side-float a,.side-float button{border:1px solid #C3D6F0;background:#fff;color:#1C63E8;padding:11px 8px;border-radius:12px;text-align:center;text-decoration:none;font:700 13px/1.2 Arial,"PingFang SC","Microsoft YaHei",sans-serif;box-shadow:0 10px 24px rgba(16,48,84,.08);cursor:pointer}.side-float .side-primary{background:#1C63E8;color:#fff;border-color:#1C63E8}.mobile-bottom{display:none}.drawer-overlay{position:fixed;inset:0;background:rgba(14,35,56,.42);z-index:12000;opacity:0;transition:opacity .2s}.drawer-overlay.is-open{opacity:1}.mobile-drawer{position:fixed;left:0;top:0;bottom:0;width:min(86vw,328px);background:#fff;z-index:12001;transform:translateX(-102%);transition:transform .22s ease;box-shadow:24px 0 54px rgba(16,48,84,.16);display:flex;flex-direction:column}.mobile-drawer.is-open{transform:translateX(0)}.drawer-head{height:72px;padding:0 18px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #E3EDF7}.drawer-logo img{height:38px;width:auto;max-width:160px;object-fit:contain}.drawer-close{width:40px;height:40px;border:0;border-radius:50%;background:#EAF3FF;color:#143250;font-size:28px;cursor:pointer}.drawer-scroll{overflow-y:auto;padding:10px 18px 34px}.drawer-group{padding:14px 0;border-bottom:1px solid #E9F0F7}.drawer-group h2{margin:0 0 10px;color:#7A8896;font-size:12px;letter-spacing:.08em}.drawer-group a{display:block;padding:9px 0;color:#143250;text-decoration:none;font-weight:700}.menu-button{width:42px;height:42px;border:0;border-radius:12px;background:#EAF3FF;padding:10px;display:grid;align-content:center;gap:4px}.menu-button span{display:block;height:2px;background:#143250;border-radius:4px}.mobile-login{height:40px;min-width:64px;padding:0 14px;display:inline-flex;align-items:center;justify-content:center;background:#1C63E8;color:#fff;border-radius:999px;text-decoration:none;font-weight:800}.mobile-header .site-logo{min-width:auto}.mobile-header .site-logo img{height:34px;max-width:138px}.muted-box{padding:24px;border-radius:18px;background:#EAF3FF;color:#4F6479;line-height:1.82}.legal-strip{padding:20px 0;background:#EAF3FF;border-top:1px solid #DCEAFB;border-bottom:1px solid #DCEAFB}.legal-strip p{margin:0;text-align:center;color:#4F6479;font-size:14px;line-height:1.8}.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.stat-card{padding:22px;border-radius:18px;background:#fff;border:1px solid #DFEAF6}.stat-card strong{display:block;color:#143250;font-size:20px;margin-bottom:8px}.stat-card span{color:#6A7988;font-size:14px;line-height:1.65}.list-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.list-links a{padding:16px 18px;background:#fff;border:1px solid #DCEAFB;border-radius:14px;text-decoration:none;color:#143250;font-weight:800}.list-links a:hover{color:#1C63E8}.accent-band{background:#EAF3FF;border-top:1px solid #DCEAFB;border-bottom:1px solid #DCEAFB}.quote{font-size:20px;line-height:1.75;color:#143250;margin:0}.mini-label{font-size:13px;color:#7A8896;font-weight:800;letter-spacing:.04em;text-transform:uppercase}.no-shadow{box-shadow:none}.page-hero .lead{max-width:800px}.page-hero .hero-grid .lead{max-width:680px}.page-hero .hero-grid{align-items:center}.page-hero .media{box-shadow:0 14px 34px rgba(16,48,84,.08)}
@media (max-width:1180px){.nav-core a{padding:8px 8px;font-size:14px}.auth-actions{gap:7px}.login-btn,.register-btn{min-width:76px;padding:0 14px}.side-float{display:none}.grid-4{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media (max-width:920px){.desktop-header{display:none}.mobile-header{display:flex}.channel-bar{display:none}.header-inner{min-height:64px}.hero,.page-hero{padding:54px 0 46px}.hero-grid,.split{grid-template-columns:1fr;gap:26px}.hero h1,.page-hero h1{font-size:clamp(30px,8vw,38px)}.lead{font-size:17px}.section{padding:54px 0}.grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-4{grid-template-columns:repeat(3,minmax(0,1fr))}.footer-grid{grid-template-columns:repeat(2,1fr)}.media.hero-media{min-height:210px}.media.content-media{min-height:220px}.stat-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:700px){.shell{width:min(100% - 28px,1220px)}.header-inner{padding:0 14px}.mobile-header{display:grid;grid-template-columns:64px 1fr 64px;gap:8px}.mobile-header .menu-button{justify-self:start}.mobile-header .mobile-logo{justify-self:center;min-width:0}.mobile-header .mobile-login{justify-self:end}.mobile-header .site-logo img{height:32px;max-width:128px}.hero,.page-hero{padding:44px 0}.section{padding:48px 0}.section.compact{padding:36px 0}.section-head{display:block}.section-head p{margin-top:10px}.grid-2,.grid-3{grid-template-columns:1fr}.grid-4{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.topic-card .topic-copy{padding:14px}.topic-card p{min-height:0}.feedback-grid{grid-template-columns:1fr}.two-tone{grid-template-columns:1fr}.table-row{grid-template-columns:1fr}.table-row strong{padding-bottom:8px}.table-row span{padding-top:8px}.footer-grid{grid-template-columns:1fr 1fr;gap:26px 18px}.footer-brand{grid-column:1/-1}.footer-bottom{display:block}.footer-bottom p+p{margin-top:10px}.mobile-bottom{position:fixed;left:10px;right:10px;bottom:10px;z-index:9000;display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border:1px solid #DCEAFB;border-radius:18px;box-shadow:0 14px 34px rgba(16,48,84,.16);overflow:hidden}.mobile-bottom a{padding:12px 5px;text-align:center;text-decoration:none;color:#143250;font-size:13px;font-weight:800}.site-footer{padding-bottom:96px}.readable{width:min(100% - 28px,860px)}.readable p{font-size:16px;line-height:1.82}.hero-actions{gap:10px}.primary-btn,.outline-btn{height:42px;padding:0 18px}.media.hero-media{min-height:195px}.media.content-media{min-height:200px}.media.card-media{height:168px}.stat-grid{grid-template-columns:1fr}.list-links{grid-template-columns:1fr}.step-item{padding-left:68px}.step-item:before{left:18px}.feature-line{grid-template-columns:58px 1fr}.feature-num{width:46px;height:46px}}
.channel-inner a.is-current{color:#1C63E8}.noscript-nav{width:min(1220px,calc(100% - 40px));margin:12px auto;padding:12px 14px;background:#fff;border:1px solid #DCEAFB;border-radius:14px;display:flex;flex-wrap:wrap;gap:10px}.noscript-nav a{color:#143250;text-decoration:none;font-weight:700;padding:7px 9px;border-radius:10px;background:#EAF3FF}
@media (min-width:1181px){.site-main .shell{padding-right:68px}}
