:root{--bg:#F5F9FE;--white:#fff;--soft:#E8F2FC;--softer:#F3F8FF;--blue:#2F7BFF;--deep:#1E5FD6;--title:#16324F;--text:#243447;--muted:#5B6B7C;--note:#7A8896;--line:rgba(47,123,255,.16);--shadow:0 12px 32px rgba(22,50,79,.08);--footer:#10243A}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.75}a{color:var(--deep);text-decoration:none}a:hover{color:var(--blue)}img{max-width:100%;height:auto;object-fit:contain;display:block}.container{max-width:1220px;margin:auto;padding:0 18px}
.site-header{position:sticky;top:0;z-index:9999;background:rgba(245,249,254,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.header-inner{height:72px;display:flex;align-items:center;gap:16px;max-width:1220px;margin:auto;padding:0 18px;white-space:nowrap}.logo{width:165px;flex:0 0 165px}.logo img{max-height:44px;width:auto}.core{display:flex;gap:6px;background:#fff;border:1px solid var(--line);padding:6px;border-radius:999px;margin:auto}.core a{padding:7px 12px;border-radius:999px;color:var(--title);font-size:14px}.core a.active,.core a:hover{background:var(--soft);color:var(--deep)}.actions{display:flex;gap:8px;align-items:center}.overview,.icon{border:1px solid var(--line);background:#fff;color:var(--title);border-radius:999px;padding:8px 12px;cursor:pointer}.login-btn,.register-btn,.main-btn,.mobile-login{display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:8px 18px;border-radius:999px;font-weight:700}.login-btn,.main-btn,.mobile-login{background:var(--blue);color:#fff;border:1px solid var(--blue)}.register-btn{background:#fff;color:var(--title);border:1px solid #C5D7F0}.mobile-menu,.mobile-login{display:none}
.section{padding:58px 0}.section-sm{padding:38px 0}.hero{padding:56px 0 42px;background:radial-gradient(circle at 85% 20%,rgba(47,123,255,.10),transparent 28%),radial-gradient(circle at 8% 80%,rgba(47,123,255,.06),transparent 30%)}.hero-grid,.split{display:grid;grid-template-columns:1.06fr .94fr;gap:34px;align-items:center}.kicker{display:inline-flex;padding:6px 11px;border-radius:999px;background:var(--soft);color:var(--deep);font-size:13px;font-weight:700}h1,h2,h3{color:var(--title);line-height:1.28;margin:0 0 14px}h1{font-size:clamp(34px,5vw,58px)}h2{font-size:clamp(25px,3vw,36px)}h3{font-size:19px}.lead{font-size:18px;color:var(--muted);max-width:760px}.hero-actions{display:flex;gap:10px;margin:24px 0;flex-wrap:wrap}.hero-media,.card{background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:16px}.hero-media{padding:16px}.hero-media img{width:100%;max-height:430px}.summary-row{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:24px}.summary-box{padding:16px;background:#fff;border:1px solid var(--line);border-radius:14px}.summary-box b{display:block;color:var(--title)}.summary-box span{font-size:13px;color:var(--muted)}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:24px}.section-head p{margin:0;color:var(--muted);max-width:680px}.quick-scroll{display:flex;gap:12px;overflow-x:auto;padding:4px 2px 12px}.quick-item{min-width:230px;background:#fff;border:1px solid var(--line);border-radius:15px;padding:17px;box-shadow:var(--shadow)}.quick-no{display:inline-flex;width:28px;height:28px;align-items:center;justify-content:center;border-radius:50%;background:var(--soft);color:var(--deep);font-size:12px;font-weight:700}.quick-item p{margin:7px 0 8px;color:var(--muted);font-size:14px}.intro-strip{background:var(--deep);color:#fff;border-radius:18px;padding:24px 28px;display:grid;grid-template-columns:1fr auto;gap:20px;align-items:center}.intro-strip h2{color:#fff;font-size:26px}.intro-strip p{margin:0;color:#EAF2FF}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:20px}.card{padding:22px}.card p{color:var(--muted)}.image-card{padding:0;overflow:hidden}.image-wrap{background:var(--softer);padding:14px}.image-card img{width:100%;max-height:240px}.card-body{padding:18px 20px 22px}.topic-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.topic-card{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:var(--shadow)}.topic-card .pic{background:var(--softer);padding:10px}.topic-card img{width:100%;max-height:180px}.topic-card .body{padding:14px 16px 18px}.topic-card p{font-size:14px;color:var(--muted);margin:6px 0 10px}.link-arrow:after{content:" →"}.app-banner{display:grid;grid-template-columns:.85fr 1.15fr;gap:28px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:20px;padding:22px;box-shadow:var(--shadow)}.app-banner img{max-height:300px;margin:auto}.notice-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.notice-grid .card{display:grid;grid-template-columns:180px 1fr;gap:16px;align-items:center}.notice-grid img{max-height:150px}.security-grid,.feedback-grid,.faq-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.feedback-grid .card{position:relative}.feedback-grid .card:before{content:"“";position:absolute;right:16px;top:4px;font-size:50px;color:#DCEAFF;line-height:1}.feedback-meta{font-size:13px;color:var(--note)}.compliance{border-left:4px solid var(--blue);background:var(--softer);padding:18px 20px;border-radius:0 14px 14px 0;color:var(--muted)}
.page-hero{padding:48px 0 28px}.page-hero-grid{display:grid;grid-template-columns:1fr 420px;gap:28px;align-items:center}.page-hero .hero-media img{max-height:300px}.breadcrumb{font-size:13px;color:var(--note);margin-bottom:12px}.prose p{margin:0 0 16px}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px;align-items:start}.side-card{position:sticky;top:94px}.info-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}.info-list div{background:var(--softer);border-radius:13px;padding:14px}.steps{counter-reset:step}.step{display:grid;grid-template-columns:42px 1fr;gap:14px;margin-bottom:18px}.step:before{counter-increment:step;content:counter(step);width:38px;height:38px;border-radius:12px;background:var(--soft);color:var(--deep);display:flex;align-items:center;justify-content:center;font-weight:800}.tag-row{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0}.tag{background:var(--soft);color:var(--deep);border-radius:999px;padding:5px 10px;font-size:13px}.qa{border-top:1px solid var(--line);padding:16px 0}.qa:first-child{border-top:0}.qa b{color:var(--title);display:block;margin-bottom:6px}
.site-footer{background:var(--footer);color:#D7E6F5;margin-top:50px;padding:46px 0 92px}.footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:28px}.footer-logo{max-height:42px;width:auto;background:#fff;border-radius:8px;padding:2px}.site-footer h3{color:#fff}.site-footer a{color:#D7E6F5}.site-footer p{color:#BFD1E2}.footer-links{display:grid;grid-template-columns:1fr 1fr;gap:8px 14px}.copyright{border-top:1px solid rgba(255,255,255,.12);margin-top:28px;padding-top:20px;font-size:13px;color:#AFC4D9}
.mask{position:fixed;inset:0;background:rgba(16,36,58,.36);z-index:10000;opacity:0;pointer-events:none;transition:.2s}.drawer{position:fixed;top:0;bottom:0;width:min(390px,88vw);background:#fff;z-index:10001;overflow:auto;transition:.25s;box-shadow:var(--shadow)}.drawer.right{right:0;transform:translateX(102%)}.drawer.left{left:0;transform:translateX(-102%)}.drawer.open{transform:translateX(0)}.mask.open{opacity:1;pointer-events:auto}.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px;border-bottom:1px solid var(--line);position:sticky;top:0;background:#fff;z-index:2}.drawer-head img{max-height:42px;width:auto}.drawer-body{padding:18px}.drawer-group{margin-bottom:20px}.drawer-group h3{font-size:14px;color:var(--note)}.drawer-links{display:grid;grid-template-columns:1fr 1fr;gap:8px}.drawer-links a{padding:9px 10px;border-radius:10px;background:var(--softer);color:var(--title)}.mobile-bottom{display:none}
@media(max-width:1050px){.core a{padding:7px 9px}.logo{width:150px;flex-basis:150px}.overview{display:none}}
@media(max-width:860px){.core,.overview,.register-btn{display:none}.header-inner{height:66px;justify-content:space-between}.logo{position:absolute;left:50%;transform:translateX(-50%);width:150px;display:flex;justify-content:center}.mobile-menu,.mobile-login{display:inline-flex}.actions .login-btn{display:none}.mobile-menu{border:1px solid var(--line);background:#fff;border-radius:12px;padding:8px 10px;color:var(--title)}.hero-grid,.split,.page-hero-grid,.article-layout,.app-banner,.footer-grid{grid-template-columns:1fr}.side-card{position:static}.summary-row{grid-template-columns:1fr 1fr}.topic-grid{grid-template-columns:repeat(2,1fr)}.security-grid,.feedback-grid,.faq-grid{grid-template-columns:1fr 1fr}.notice-grid{grid-template-columns:1fr}.mobile-bottom{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;left:0;right:0;bottom:0;z-index:9998;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-top:1px solid var(--line);padding:7px 6px calc(7px + env(safe-area-inset-bottom))}.mobile-bottom a{text-align:center;color:var(--title);font-size:12px;padding:6px 2px;border-radius:10px}.mobile-bottom a.active{background:var(--soft);color:var(--deep);font-weight:700}body{padding-bottom:64px}.site-footer{padding-bottom:42px}}
@media(max-width:620px){.container{padding:0 14px}.section{padding:44px 0}.hero{padding:38px 0 30px}h1{font-size:36px}.lead{font-size:16px}.summary-row,.two-col,.security-grid,.feedback-grid,.faq-grid,.info-list{grid-template-columns:1fr}.topic-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.topic-card .body{padding:12px}.topic-card p{font-size:13px}.notice-grid .card{grid-template-columns:1fr}.notice-grid img{max-height:190px;margin:auto}.section-head{align-items:start;flex-direction:column}.intro-strip{grid-template-columns:1fr;padding:20px}.hero-media img{max-height:300px}.page-hero .hero-media img{max-height:240px}}