:root{--page:#F6F8FF;--soft:#ECF0FF;--sky:#EAF7FF;--white:#FFFFFF;--title:#1D2B5F;--text:#222222;--muted:#5B647A;--primary:#597EF7;--line:rgba(89,126,247,.16);--shadow:0 16px 40px rgba(89,126,247,.10);--dark:#101827;--footer:#1F1F1F;--footerText:#D7DCE8}
*{box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:hidden}
body{margin:0;overflow-x:hidden;background:var(--page);color:var(--text);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.75}
img{max-width:100%}
a{color:inherit}
button,input,select,textarea{font:inherit}
.site-header{position:sticky;top:0;z-index:9999;width:100%;background:linear-gradient(135deg,#F7F9FF 0%,#ECF0FF 52%,#EAF7FF 100%);box-shadow:0 8px 24px rgba(89,126,247,.10);backdrop-filter:blur(12px)}
.header-inner{max-width:1200px;min-height:72px;margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.site-logo,.drawer-logo,.footer-logo{display:inline-flex;align-items:center;flex:0 0 auto}
.site-logo img{display:block;height:40px;width:auto;max-width:168px;object-fit:contain}
.logo-placeholder{display:block;width:150px;height:38px;border-radius:10px;background:linear-gradient(135deg,#E4E9FF,#EAF7FF);border:1px solid var(--line)}
.nav-core{display:flex;align-items:center;gap:8px;white-space:nowrap;flex-wrap:nowrap}
.nav-core a{color:#1D2B5F;padding:8px 10px;border-radius:999px;font-weight:700;text-decoration:none}
.nav-core a.is-current,.nav-core a:hover{background:rgba(255,255,255,.82);color:#597EF7}
.header-actions{display:flex;align-items:center;gap:8px;white-space:nowrap}
.login-link{font-weight:700;color:var(--title);text-decoration:none;padding:8px 10px}
.main-btn{position:relative;overflow:hidden;isolation:isolate;display:inline-flex;align-items:center;justify-content:center;height:42px;min-width:96px;padding:0 20px;background:linear-gradient(135deg,#7580EE 0%,#597EF7 48%,#7AC4F5 100%);color:#FFFFFF!important;border-radius:999px;text-decoration:none;font-weight:700;box-shadow:0 10px 24px rgba(89,126,247,.28);border:0}
.main-btn::before{content:"";position:absolute;inset:-2px;border-radius:inherit;background:linear-gradient(120deg,transparent 0%,rgba(255,255,255,.85) 35%,transparent 70%);transform:translateX(-120%);animation:btnShine 2.4s infinite;z-index:-1}
.main-btn::after{content:"";position:absolute;inset:-1px;border-radius:inherit;border:1px solid rgba(255,255,255,.65);box-shadow:0 0 8px rgba(122,196,245,.55),0 0 18px rgba(89,126,247,.35);pointer-events:none}
@keyframes btnShine{0%{transform:translateX(-120%)}55%{transform:translateX(120%)}100%{transform:translateX(120%)}}
.menu-toggle,.mobile-register{display:none}
.channel-strip{background:#fff;border-top:1px solid rgba(89,126,247,.08);border-bottom:1px solid rgba(89,126,247,.08);overflow:hidden}
.channel-inner{max-width:1200px;margin:0 auto;display:flex;overflow-x:auto;scrollbar-width:thin;padding:0 20px;white-space:nowrap}
.channel-inner a{color:#5B647A;text-decoration:none;padding:10px 12px;font-size:14px}
.channel-inner a:hover,.channel-inner a.is-current{color:#597EF7;background:#F6F8FF}
.site-main{min-height:60vh;padding-bottom:0}
.wrap{width:min(1200px,calc(100% - 40px));margin:0 auto}
.reading{width:min(860px,calc(100% - 40px));margin:0 auto}
.section{padding:68px 0}
.section-tight{padding:42px 0}
.page-hero{padding:64px 0 28px}
.page-hero .wrap,.page-hero .reading{position:relative}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:700;color:var(--primary);background:rgba(89,126,247,.10);padding:6px 10px;border-radius:999px}
.page-hero h1,.home-heading{font-size:clamp(38px,5vw,50px);line-height:1.18;letter-spacing:-.02em;color:var(--title);margin:16px 0 14px}
.page-hero p{font-size:18px;color:var(--muted);max-width:780px;margin:0}
.hero-slider{width:min(1200px,calc(100% - 40px));height:360px;margin:36px auto 20px;background:#101827;border-radius:18px;overflow:hidden;position:relative;box-shadow:var(--shadow)}
.hero-slide{position:absolute;inset:0;display:none;align-items:center;justify-content:center;padding:18px}
.hero-slide.is-active{display:flex}
.hero-slide .media{height:100%;aspect-ratio:auto;background:#101827}
.hero-slide .media img{object-fit:contain}
.hero-slide .placeholder{background:linear-gradient(135deg,#121F3B,#20365D)}
.slider-prev,.slider-next{position:absolute;top:50%;transform:translateY(-50%);width:42px;height:42px;border-radius:50%;border:1px solid rgba(255,255,255,.35);background:rgba(16,24,39,.72);color:#fff;font-size:24px;cursor:pointer}
.slider-prev{left:18px}
.slider-next{right:18px}
.slider-dots{position:absolute;left:50%;bottom:14px;transform:translateX(-50%);display:flex;gap:8px}
.slider-dot{width:10px;height:10px;border-radius:50%;border:0;background:rgba(255,255,255,.38);padding:0;cursor:pointer}
.slider-dot.is-active{background:#fff}
.pill-row{display:flex;gap:10px;overflow-x:auto;padding:10px 0;scrollbar-width:thin}
.pill-row a{flex:0 0 auto;text-decoration:none;background:#fff;color:var(--title);border:1px solid var(--line);border-radius:999px;padding:9px 14px;font-weight:700}
.pill-row a:hover{color:var(--primary);box-shadow:0 8px 20px rgba(89,126,247,.08)}
.notice-bar{display:flex;align-items:center;justify-content:space-between;gap:22px;background:linear-gradient(135deg,#fff,#F1F4FF);border:1px solid var(--line);border-radius:18px;padding:22px 24px;box-shadow:var(--shadow)}
.notice-bar strong{color:var(--title);font-size:18px}
.notice-bar p{margin:4px 0 0;color:var(--muted)}
.grid-2,.grid-3,.grid-4{display:grid;gap:20px}
.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))}
.info-card,.topic-card,.link-card,.faq-item,.step-item,.quote-note,.compare-box{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}
.info-card,.topic-card,.link-card,.step-item,.compare-box{padding:24px}
.info-card h2,.info-card h3,.topic-card h3,.link-card h3,.step-item h3,.compare-box h2,.compare-box h3{color:var(--title);margin:0 0 10px;line-height:1.35}
.info-card p,.topic-card p,.link-card p,.step-item p,.compare-box p{margin:0;color:var(--muted)}
.text-link{display:inline-flex;margin-top:14px;color:var(--primary);font-weight:700;text-decoration:none}
.text-link:hover{text-decoration:underline}
.topic-card{min-height:150px;display:flex;flex-direction:column}
.topic-card .text-link{margin-top:auto;padding-top:14px}
.section-title{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:24px}
.section-title h2{font-size:30px;color:var(--title);line-height:1.25;margin:0}
.section-title p{margin:0;color:var(--muted);max-width:620px}
.media{position:relative;width:100%;max-width:100%;overflow:hidden;border-radius:16px;background:#ECF0FF;aspect-ratio:16/9}
.media>img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;object-position:center center;display:block}
.media.card-media{height:172px;aspect-ratio:auto}
.media.feature-media{height:244px;aspect-ratio:auto}
.placeholder{position:absolute;inset:0;background:linear-gradient(135deg,#ECF0FF,#EAF7FF);border:1px dashed rgba(89,126,247,.25);border-radius:inherit}
.split{display:grid;grid-template-columns:minmax(0,1.03fr) minmax(0,.97fr);gap:28px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px;box-shadow:var(--shadow)}
.split.reverse .media{order:2}
.split-copy h2{margin:0 0 12px;color:var(--title);font-size:30px;line-height:1.3}
.split-copy p{margin:0 0 12px;color:var(--muted)}
.split-copy ul,.article ul,.article ol{margin:14px 0;padding-left:22px}
.split-copy li,.article li{margin:8px 0}
.article{font-size:17px}
.article h2{font-size:28px;color:var(--title);line-height:1.35;margin:34px 0 12px}
.article h3{font-size:21px;color:var(--title);margin:26px 0 10px}
.article p{margin:0 0 18px}
.article .lead{font-size:19px;color:#39456B}
.article a{color:var(--primary)}
.toc{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px 24px;box-shadow:var(--shadow)}
.toc h2{font-size:22px;margin:0 0 12px;color:var(--title)}
.toc ol{margin:0;padding-left:22px}
.toc a{color:var(--primary);text-decoration:none}
.toc a:hover{text-decoration:underline}
.timeline{position:relative;padding-left:24px}
.timeline::before{content:"";position:absolute;left:7px;top:8px;bottom:8px;width:2px;background:#DCE3FF}
.timeline-item{position:relative;padding:0 0 24px 18px}
.timeline-item::before{content:"";position:absolute;left:-22px;top:9px;width:10px;height:10px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 4px #EAF0FF}
.timeline-item h3{margin:0 0 6px;color:var(--title)}
.timeline-item p{margin:0;color:var(--muted)}
.steps{display:grid;gap:16px}
.step-item{display:grid;grid-template-columns:44px 1fr;gap:14px;align-items:start}
.step-no{width:44px;height:44px;border-radius:14px;background:#ECF0FF;color:var(--primary);display:flex;align-items:center;justify-content:center;font-weight:800}
.faq-list{display:grid;gap:14px}
.faq-item{padding:20px 22px}
.faq-item h2,.faq-item h3{font-size:19px;color:var(--title);margin:0 0 8px}
.faq-item p{margin:0;color:var(--muted)}
.quote-note{padding:22px;border-left:4px solid var(--primary);color:#3D496D}
.tag-list{display:flex;flex-wrap:wrap;gap:10px}
.tag-list a,.tag-list span{display:inline-flex;padding:8px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);text-decoration:none;color:var(--title)}
.app-banner{display:grid;grid-template-columns:1.3fr auto;gap:20px;align-items:center;background:linear-gradient(135deg,#E9EEFF,#EAF7FF);border:1px solid var(--line);border-radius:18px;padding:28px}
.app-banner h2{margin:0 0 8px;color:var(--title)}
.app-banner p{margin:0;color:var(--muted)}
.compliance{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.compliance>div{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px}
.compliance h3{margin:0 0 8px;color:var(--title)}
.compliance p{margin:0;color:var(--muted)}
.side-float{position:fixed;right:12px;top:50%;transform:translateY(-40%);z-index:8000;width:58px;display:flex;flex-direction:column;gap:8px}
.side-float a,.side-float button{min-height:48px;border:1px solid var(--line);background:#fff;color:var(--primary);border-radius:14px;text-decoration:none;display:flex;align-items:center;justify-content:center;text-align:center;font-size:12px;padding:6px;box-shadow:0 8px 20px rgba(89,126,247,.08);cursor:pointer}
.side-float .main-btn{height:56px;min-width:0;padding:6px;color:#fff!important;border:0}
.site-footer{background:#1F1F1F;color:#D7DCE8;margin-top:76px}
.footer-grid{width:min(1200px,calc(100% - 40px));margin:0 auto;display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:32px;padding:52px 0 38px}
.footer-grid h2{font-size:17px;color:#fff;margin:0 0 14px}
.footer-grid a{display:block;color:#D7DCE8;text-decoration:none;margin:8px 0}
.footer-grid a:hover{color:#fff}
.footer-logo img{height:38px;width:auto;max-width:160px;object-fit:contain}
.footer-brand p{max-width:320px;color:#B9C0CF}
.footer-bottom{width:min(1200px,calc(100% - 40px));margin:0 auto;border-top:1px solid rgba(255,255,255,.10);padding:18px 0 28px;display:flex;justify-content:space-between;gap:24px;font-size:13px}
.footer-bottom p{margin:0}
.mobile-drawer,.drawer-overlay,.mobile-bottom{display:none}
.related-strip{display:flex;gap:12px;flex-wrap:wrap}
.related-strip a{background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 13px;color:var(--primary);text-decoration:none;font-weight:700}
.mini-index{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.mini-index a{display:flex;justify-content:space-between;gap:12px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 16px;text-decoration:none;color:var(--title)}
.mini-index a span:last-child{color:var(--primary)}
.duo-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.duo-list section{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px}
.duo-list h2{margin-top:0;color:var(--title)}
.compact-list{display:grid;gap:10px}
.compact-list a{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;background:#fff;border:1px solid var(--line);border-radius:14px;text-decoration:none;color:var(--title)}
.compact-list a::after{content:"→";color:var(--primary);font-weight:800}
.table-like{display:grid;gap:1px;background:#DEE5FF;border:1px solid #DEE5FF;border-radius:16px;overflow:hidden}
.table-row{display:grid;grid-template-columns:180px 1fr;background:#fff}
.table-row strong,.table-row span{padding:15px 18px}
.table-row strong{color:var(--title);background:#F7F9FF}
.noscript-nav{display:none}
.drawer-open{overflow:hidden}

@media(max-width:1120px){
.nav-core{gap:2px}
.nav-core a{padding:8px 7px;font-size:14px}
.header-actions .login-link{display:none}
.grid-4{grid-template-columns:repeat(3,minmax(0,1fr))}
.side-float{display:none}
.wrap,.reading{width:min(100% - 32px,1200px)}
.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media(max-width:760px){
body{padding-bottom:68px}
.site-header{position:sticky}
.header-inner{min-height:64px;padding:0 14px;gap:10px}
.nav-core,.header-actions,.channel-strip{display:none}
.menu-toggle,.mobile-register{display:inline-flex}
.menu-toggle{width:42px;height:42px;border:0;background:transparent;flex-direction:column;align-items:center;justify-content:center;gap:5px;padding:0}
.menu-toggle span{width:22px;height:2px;background:var(--title);border-radius:2px}
.site-logo{position:absolute;left:50%;transform:translateX(-50%);max-width:132px}
.site-logo img{height:34px;max-width:132px}
.site-logo .logo-placeholder{width:118px;height:32px}
.mobile-register{height:40px;min-width:0;padding:0 13px;font-size:13px;margin-left:auto}
.drawer-overlay{display:none;position:fixed;inset:0;background:rgba(16,24,39,.42);z-index:10000;opacity:0;pointer-events:none;transition:opacity .18s ease}
.drawer-overlay.is-show{display:block;opacity:1;pointer-events:auto}
.mobile-drawer{display:block;position:fixed;left:0;top:0;bottom:0;width:min(84vw,320px);background:#fff;z-index:10001;transform:translateX(-102%);transition:transform .2s ease;overflow-y:auto;padding:14px 16px 28px}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:4px 0 12px;border-bottom:1px solid var(--line)}
.drawer-logo img{height:34px;width:auto;max-width:150px;object-fit:contain}
.drawer-close{width:42px;height:42px;border:0;background:#F1F4FF;color:var(--title);border-radius:50%;font-size:25px}
.drawer-group{padding:16px 0 0}
.drawer-group strong{display:block;color:var(--primary);font-size:13px;margin-bottom:6px}
.drawer-group a{display:block;text-decoration:none;color:var(--title);padding:9px 2px;border-bottom:1px solid #F0F2F8}
.noscript-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;width:calc(100% - 28px);margin:14px auto;padding:12px;background:#fff;border:1px solid var(--line);border-radius:16px}
.noscript-nav a{padding:8px 10px;border-radius:10px;background:#F6F8FF;color:var(--title);text-decoration:none;font-size:13px}
.mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:9000;height:58px;background:#fff;border-top:1px solid var(--line);display:grid;grid-template-columns:repeat(4,1fr);padding-bottom:env(safe-area-inset-bottom)}
.mobile-bottom a{display:flex;align-items:center;justify-content:center;text-decoration:none;color:var(--title);font-size:13px;font-weight:700}
.mobile-bottom a:hover{color:var(--primary)}
.page-hero{padding:40px 0 18px}
.page-hero h1,.home-heading{font-size:clamp(28px,8.5vw,34px)}
.page-hero p{font-size:16px}
.section{padding:48px 0}
.section-tight{padding:34px 0}
.hero-slider{width:calc(100% - 28px);height:210px;margin-top:18px}
.hero-slide{padding:10px}
.slider-prev,.slider-next{width:36px;height:36px}
.slider-prev{left:10px}
.slider-next{right:10px}
.wrap,.reading{width:calc(100% - 28px)}
.notice-bar{align-items:flex-start;flex-direction:column}
.grid-2,.grid-3,.grid-4,.duo-list,.compliance{grid-template-columns:1fr}
.topic-card{min-height:auto}
.split,.split.reverse{grid-template-columns:1fr;padding:18px}
.split.reverse .media{order:0}
.media.feature-media{height:220px}
.section-title{align-items:flex-start;flex-direction:column}
.section-title h2,.split-copy h2{font-size:25px}
.article{font-size:16px}
.article h2{font-size:24px}
.app-banner{grid-template-columns:1fr}
.mini-index{grid-template-columns:1fr}
.table-row{grid-template-columns:1fr}
.table-row strong{border-bottom:1px solid var(--line)}
.footer-grid{grid-template-columns:1fr;padding-top:42px}
.footer-bottom{flex-direction:column}
.site-footer{margin-top:52px}
}

@media(min-width:761px) and (max-width:980px){
.hero-slider{height:290px}
}

@media(min-width:761px){
.site-main{padding-right:68px}
}