:root{--bg:#F6F8FF;--soft:#ECF0FF;--sky:#EAF7FF;--card:#FFFFFF;--title:#1D2B5F;--text:#222222;--muted:#5B647A;--primary:#597EF7;--p1:#7580EE;--p2:#7AC4F5;--deep:#101827;--foot:#1F1F1F;--foottext:#D7DCE8;--line:rgba(89,126,247,.16);--shadow:0 16px 40px rgba(89,126,247,.10)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;overflow-x:hidden}img{max-width:100%}a{color: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{display:flex;align-items:center;flex:0 0 auto;text-decoration:none}.site-logo img{display:block;height:40px;width:auto;max-width:168px;object-fit:contain}.logo-text{font-weight:900;color:var(--title);font-size:23px;white-space:nowrap}.logo-text.light{color:#fff}.nav-core{display:flex;align-items:center;gap:8px;white-space:nowrap;flex-wrap:nowrap}.nav-core a{color:#1D2B5F;padding:8px 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.container{display:grid;grid-template-columns:minmax(0,1fr);gap:20px}.eyebrow{display:inline-flex;align-items:center;gap:7px;color:var(--primary);font-weight:800;font-size:14px;letter-spacing:.04em}.eyebrow::before{content:"";width:24px;height:3px;border-radius:10px;background:linear-gradient(90deg,var(--p1),var(--p2))}.page-hero h1,.home-intro h1{margin:12px 0 16px;color:var(--title);font-size:clamp(38px,4.4vw,50px);line-height:1.15;letter-spacing:-.02em}.page-hero p,.home-intro p{max-width:820px;margin:0;color:var(--muted);font-size:18px;line-height:1.82}.breadcrumbs{margin-top:18px;display:flex;gap:8px;flex-wrap:wrap;font-size:14px;color:var(--muted)}.breadcrumbs a{color:var(--primary);text-decoration:none}.surface{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}.reading{width:min(880px,calc(100% - 40px));margin:0 auto}.reading h2,.split-copy h2,.section-title h2{color:var(--title);font-size:28px;line-height:1.25;margin:0 0 14px}.reading 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a:hover{color:var(--primary);border-color:rgba(89,126,247,.35)}.note-band{padding:22px 26px;border-radius:16px;background:linear-gradient(135deg,#EEF2FF,#EAF7FF);border:1px solid var(--line);color:#3f4b67;font-size:16px;line-height:1.8}.steps{display:grid;gap:14px;counter-reset:step}.step-item{position:relative;padding:22px 24px 22px 74px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow)}.step-item::before{counter-increment:step;content:counter(step);position:absolute;left:22px;top:22px;width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,var(--p1),var(--p2));color:#fff;font-weight:800}.step-item h3{margin:2px 0 7px;color:var(--title);font-size:19px}.step-item p{margin:0}.qa-list{display:grid;gap:14px}.qa-item{padding:22px 24px;background:#fff;border:1px solid var(--line);border-radius:16px}.qa-item h3{margin:0 0 8px;color:var(--title);font-size:19px}.qa-item 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9px;color:var(--title)}.legal-box p{margin:0;color:var(--muted);line-height:1.8}.site-footer{background:#1F1F1F;color:#D7DCE8;margin-top:40px}.footer-grid{max-width:1200px;margin:0 auto;padding:52px 20px 34px;display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:34px}.footer-grid h2{font-size:16px;color:#fff;margin:0 0 14px}.footer-grid a{display:block;color:#D7DCE8;text-decoration:none;margin:9px 0}.footer-grid a:hover{color:#fff}.footer-brand p{max-width:330px;line-height:1.75;color:#bfc7d8}.footer-logo{display:inline-flex;margin-bottom:14px}.footer-logo img{display:block;height:40px;width:auto;max-width:168px;object-fit:contain}.footer-bottom{max-width:1200px;margin:0 auto;padding:18px 20px 26px;border-top:1px solid rgba(255,255,255,.1);font-size:13px;line-height:1.7;color:#aeb6c8;display:flex;justify-content:space-between;gap:20px}.side-float{position:fixed;right:14px;top:42%;z-index:120;display:flex;flex-direction:column;gap:8px;width:92px}.side-float a,.side-float button{border:1px solid var(--line);background:#fff;color:var(--primary);border-radius:12px;padding:10px 8px;text-align:center;text-decoration:none;font-weight:800;font-size:12px;box-shadow:0 8px 24px rgba(89,126,247,.12);cursor:pointer}.side-float .main-btn{min-width:0;height:auto;color:#fff;padding:11px 8px;border-radius:12px}.mobile-bottom{display:none}.mobile-drawer,.drawer-overlay{display:none}.tagline{font-size:14px;color:var(--primary);font-weight:800}.compare{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.compare>div{padding:24px}.compare h3{margin:0 0 10px;color:var(--title)}.compare p{margin:0;color:var(--muted);line-height:1.8}.mini-index{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.mini-index a{padding:15px;background:#fff;border:1px solid var(--line);border-radius:14px;text-decoration:none;color:var(--title);font-weight:800;text-align:center}.mini-index a:hover{color:var(--primary)}
@media(max-width:1100px){.side-float{display:none}.nav-core{gap:2px}.nav-core a{padding:8px 7px;font-size:13px}.header-inner{gap:10px}.topic-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.home-slider{height:290px}}
@media(max-width:900px){.desktop-actions,.nav-core,.channel-strip{display:none}.mobile-register,.menu-toggle{display:inline-flex}.header-inner{min-height:66px;padding:0 14px;display:grid;grid-template-columns:1fr auto 1fr;gap:10px}.menu-toggle{width:42px;height:42px;border:0;background:transparent;align-items:center;justify-content:center;flex-direction:column;gap:4px;padding:0;justify-self:start}.menu-toggle span{display:block;width:21px;height:2px;background:var(--title);border-radius:4px}.site-logo{justify-self:center}.site-logo img{height:36px;max-width:148px}.mobile-register{justify-self:end;min-width:84px;height:40px;padding:0 14px;font-size:13px}.drawer-overlay{display:block;position:fixed;inset:0;z-index:10000;background:rgba(16,24,39,.38);opacity:0;visibility:hidden;transition:.25s}.drawer-overlay.is-open{opacity:1;visibility:visible}.mobile-drawer{display:block;position:fixed;left:0;top:0;bottom:0;z-index:10001;width:min(84vw,320px);background:#fff;transform:translateX(-102%);transition:transform .25s ease;overflow-y:auto;box-shadow:20px 0 60px rgba(16,24,39,.18)}.mobile-drawer.is-open{transform:translateX(0)}body.drawer-open{overflow:hidden}.drawer-head{position:sticky;top:0;background:#fff;display:flex;align-items:center;justify-content:space-between;padding:16px;border-bottom:1px solid var(--line);z-index:2}.drawer-logo img{display:block;height:36px;width:auto;max-width:150px;object-fit:contain}.drawer-close{border:0;background:#F6F8FF;width:38px;height:38px;border-radius:50%;font-size:25px;color:var(--title)}.drawer-nav{padding:8px 16px 30px}.drawer-nav h2{font-size:13px;color:#7a859d;margin:18px 0 8px}.drawer-nav a{display:block;padding:10px 8px;color:var(--title);text-decoration:none;border-radius:9px}.drawer-nav a:hover{background:#F6F8FF;color:var(--primary)}.page-hero{padding:46px 0 28px}.page-hero h1,.home-intro h1{font-size:clamp(28px,8vw,34px)}.section{padding:48px 0}.split,.split.reverse{grid-template-columns:1fr;gap:22px}.split.reverse .split-copy,.split.reverse .split-media{order:initial}.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-brand{grid-column:1/-1}.mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:9980;height:60px;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:grid;place-items:center;text-decoration:none;color:var(--title);font-weight:800;font-size:13px}.site-footer{padding-bottom:62px}.home-slider{height:260px}.banner-app{grid-template-columns:1fr}.mini-index{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:600px){.container,.reading{width:min(100% - 28px,1200px)}.section{padding:42px 0}.page-hero{padding:40px 0 24px}.page-hero p,.home-intro p{font-size:16px}.home-slider{height:210px;border-radius:16px}.slider-arrow{width:38px;height:38px;font-size:22px}.slider-arrow.prev{left:8px}.slider-arrow.next{right:8px}.card-grid{grid-template-columns:1fr}.topic-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.topic-card{padding:16px}.legal-grid,.compare{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr;gap:22px}.footer-brand{grid-column:auto}.footer-bottom{flex-direction:column}.section-title{display:block}.section-title p{margin-top:10px}.reading h2,.split-copy h2,.section-title h2{font-size:24px}.reading p,.split-copy p,.info-card p,.qa-item p,.step-item p{font-size:16px}.banner-app{padding:26px}.banner-app h2{font-size:26px}.header-inner{padding:0 10px}.mobile-register{min-width:78px;padding:0 10px}.site-logo img{max-width:138px}.split-media .media{height:220px}.step-item{padding:20px 18px 20px 64px}.step-item::before{left:16px;top:20px}.mini-index{grid-template-columns:1fr 1fr}}