:root{--primary:#597EF7;--title:#1D2B5F;--text:#222;--muted:#5B647A;--page:#F6F8FF;--soft:#ECF0FF;--sky:#EAF7FF;--card:#fff;--line:rgba(89,126,247,.16);--shadow:0 16px 40px rgba(89,126,247,.10)}
*{box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:hidden}
body{margin:0;max-width:100%;overflow-x:hidden;background:var(--page);color:var(--text);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.8;font-size:16px}
a{color:var(--title);text-decoration:none}
a:hover{color:var(--primary)}
img{max-width:100%}
button{font:inherit}
.container{width:min(1200px,calc(100% - 40px));margin:0 auto}
.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:inline-flex;align-items:center;flex:0 0 auto}
.site-logo img{display:block;height:40px;width:auto;max-width:168px;object-fit:contain;object-position:center}
.logo-placeholder{display:inline-flex;align-items:center;justify-content:center;min-width:130px;height:40px;padding:0 12px;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--title);font-weight:800;letter-spacing:.04em}
.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;font-size:15px}
.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}
.header-login{font-weight:700;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:#FFF!important;border-radius:999px;text-decoration:none;font-weight:700;box-shadow:0 10px 24px rgba(89,126,247,.28);white-space:nowrap}
.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;padding:0 20px;display:flex;align-items:center;gap:18px;overflow-x:auto;white-space:nowrap;scrollbar-width:thin}
.channel-inner a{display:inline-flex;align-items:center;min-height:44px;color:#5B647A;font-size:14px;font-weight:700}
.channel-inner a:hover{color:#597EF7}
#mainContent{min-height:60vh;padding-bottom:0}
.page-hero{padding:72px 0 40px;background:linear-gradient(180deg,rgba(234,247,255,.9),rgba(246,248,255,0))}
.page-hero .eyebrow,.eyebrow{color:var(--primary);font-size:14px;font-weight:800;letter-spacing:.1em}
.page-hero h1,.home-intro h1{font-size:clamp(38px,4.6vw,50px);line-height:1.18;color:var(--title);margin:10px 0 18px;letter-spacing:-.02em}
.page-hero p,.home-intro p{max-width:820px;color:var(--muted);font-size:18px}
.breadcrumb{display:flex;gap:8px;align-items:center;font-size:14px;color:var(--muted);margin-bottom:10px}
.section{padding:64px 0}
.section-tight{padding:42px 0}
.section h2{font-size:clamp(26px,3vw,34px);line-height:1.3;color:var(--title);margin:0 0 14px}
.section-lead{max-width:800px;color:var(--muted);margin:0 0 28px}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:var(--shadow);min-width:0}
.card h2,.card h3{color:var(--title);line-height:1.35;margin:0 0 10px}
.card h3{font-size:21px}
.card p{margin:0 0 12px;color:var(--muted)}
.text-link{font-weight:800;color:var(--primary)}
.pill-row{display:flex;gap:10px;overflow-x:auto;white-space:nowrap;padding:2px 0 12px;scrollbar-width:thin}
.pill-row a{display:inline-flex;align-items:center;min-height:40px;padding:0 16px;border:1px solid var(--line);background:#fff;border-radius:999px;color:var(--title);font-weight:700}
.notice-bar{border:1px solid var(--line);border-radius:18px;background:linear-gradient(135deg,#fff,#ECF0FF);padding:24px 28px;color:#44506a}
.notice-bar strong{color:var(--title)}
.topic-matrix{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.topic-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:0 10px 26px rgba(89,126,247,.07);min-width:0}
.topic-card h3{margin:0 0 8px;color:var(--title);font-size:19px}
.topic-card p{margin:0 0 10px;color:var(--muted);font-size:14px}
.two-col{display:grid;grid-template-columns:1.03fr .97fr;gap:34px;align-items:center}
.two-col.reverse .copy{order:2}
.two-col.reverse .visual{order:1}
.copy p{color:var(--muted)}
.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:250px;aspect-ratio:auto}
.media-placeholder{display:flex;align-items:center;justify-content:center;position:absolute;inset:0;padding:20px;color:#7a849c;font-size:14px;text-align:center;background:linear-gradient(135deg,#ECF0FF,#EAF7FF)}
.hero-carousel{position:relative;height:360px;border-radius:18px;background:#101827;overflow:hidden;box-shadow:0 20px 50px rgba(16,24,39,.18)}
.carousel-track,.carousel-slide{position:absolute;inset:0}
.carousel-slide{display:none;align-items:center;justify-content:center}
.carousel-slide.is-active{display:flex}
.carousel-slide .media{height:100%;aspect-ratio:auto;border-radius:0;background:#101827}
.carousel-slide .media>img{object-fit:contain}
.carousel-slide .media-placeholder{background:#101827;color:#cad4e8}
.carousel-prev,.carousel-next{position:absolute;z-index:3;top:50%;transform:translateY(-50%);width:42px;height:42px;border:1px solid rgba(255,255,255,.25);border-radius:50%;background:rgba(255,255,255,.12);color:#fff;cursor:pointer}
.carousel-prev{left:16px}
.carousel-next{right:16px}
.carousel-dots{position:absolute;z-index:3;bottom:14px;left:50%;transform:translateX(-50%);display:flex;gap:8px}
.carousel-dot{width:10px;height:10px;border:0;border-radius:50%;background:rgba(255,255,255,.45);padding:0;cursor:pointer}
.carousel-dot.is-active{background:#fff;transform:scale(1.2)}
.home-intro{padding:54px 0 24px}
.home-intro .intro-row{display:flex;align-items:end;justify-content:space-between;gap:24px}
.home-intro .intro-copy{max-width:820px}
.article{width:min(860px,calc(100% - 40px));margin:0 auto;padding:24px 0 74px}
.article h2{font-size:27px;line-height:1.35;color:var(--title);margin:40px 0 12px}
.article h3{font-size:21px;color:var(--title);margin:28px 0 8px}
.article p,.article li{font-size:17px;line-height:1.9}
.article p{margin:0 0 16px}
.article ul,.article ol{padding-left:1.3em}
.article .media{margin:28px 0;height:250px;aspect-ratio:auto}
.article-index{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px 24px;margin:20px 0 30px}
.article-index a{display:inline-block;margin:6px 16px 6px 0;color:var(--primary);font-weight:700}
.step-list{list-style:none;padding:0!important;counter-reset:steps}
.step-list li{position:relative;background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px 18px 18px 60px;margin:14px 0;box-shadow:0 10px 24px rgba(89,126,247,.06)}
.step-list li:before{counter-increment:steps;content:counter(steps);position:absolute;left:18px;top:18px;width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:#ECF0FF;color:var(--primary);font-weight:800;line-height:1}
.compare-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin:24px 0}
.compare-grid>div{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px}
.qa-list{display:grid;gap:14px;margin-top:22px}
.qa-item{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px}
.qa-item h3{font-size:18px;margin:0 0 8px}
.qa-item p{margin:0;color:var(--muted)}
.app-banner{display:grid;grid-template-columns:1.15fr .85fr;align-items:center;gap:28px;background:linear-gradient(135deg,#ECF0FF,#EAF7FF);border:1px solid var(--line);border-radius:18px;padding:30px}
.app-banner h2{margin-top:0}
.compliance-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.compliance-grid>div{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px}
.site-footer{background:#1F1F1F;color:#D7DCE8;padding:50px 0 22px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:34px}
.site-footer h2{font-size:16px;color:#fff;margin:0 0 12px}
.site-footer a{display:block;color:#D7DCE8;margin:7px 0}
.site-footer .site-logo{display:inline-flex}
.footer-brand p{max-width:320px;color:#b9c0cf}
.footer-logo-text{background:#2b2b2b;border-color:#444;color:#fff}
.footer-bottom{border-top:1px solid #343434;margin-top:32px;padding-top:20px;font-size:13px;color:#aeb6c5;display:flex;justify-content:space-between;gap:24px}
.footer-bottom p{margin:0}
.floating-tools{position:fixed;z-index:2000;right:14px;top:52%;transform:translateY(-50%);width:112px;display:flex;flex-direction:column;gap:8px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:10px;box-shadow:var(--shadow)}
.floating-tools a,.floating-tools button{display:flex;align-items:center;justify-content:center;min-height:38px;border:0;background:#fff;color:var(--primary);font-weight:700;border-radius:10px;cursor:pointer;font-size:13px}
.floating-tools .main-btn{height:40px;min-width:0;color:#fff}
.mobile-bottom{display:none}
.mobile-drawer,.drawer-overlay{display:none}
.tag-list{display:flex;flex-wrap:wrap;gap:10px}
.tag-list a,.tag-list span{display:inline-flex;padding:7px 12px;border-radius:999px;background:#ECF0FF;color:var(--title);font-weight:700;font-size:14px}
.timeline{border-left:2px solid #dce5ff;padding-left:22px;margin:24px 0}
.timeline>div{position:relative;margin:0 0 26px}
.timeline>div:before{content:"";position:absolute;left:-30px;top:9px;width:12px;height:12px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 5px #ecf0ff}
.read-path{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.read-path>div{padding:20px;border-radius:16px;background:#fff;border:1px solid var(--line)}

@media(max-width:1100px){
.nav-core{gap:2px}
.nav-core a{padding:8px 7px;font-size:14px}
.header-inner{gap:10px}
.topic-matrix{grid-template-columns:repeat(3,minmax(0,1fr))}
.floating-tools{display:none}
.header-actions .header-login{display:none}
}

@media(max-width:820px){
body{padding-bottom:66px}
.header-inner{min-height:64px;padding:0 14px;display:grid;grid-template-columns:1fr auto 1fr;gap:8px}
.nav-core,.header-actions,.channel-strip{display:none}
.menu-toggle{display:flex;width:42px;height:42px;border:0;border-radius:12px;background:rgba(255,255,255,.76);align-items:center;justify-content:center;flex-direction:column;gap:4px;padding:0;justify-self:start}
.menu-toggle span{width:19px;height:2px;background:#1D2B5F;border-radius:2px}
.mobile-register{display:inline-flex;height:40px;min-width:88px;padding:0 14px;justify-self:end;font-size:14px}
.site-logo{justify-self:center}
.site-logo img{height:36px;max-width:140px}
.logo-placeholder{min-width:112px;height:36px}
.mobile-drawer{display:block;position:fixed;z-index:12000;left:0;top:0;bottom:0;width:min(84vw,320px);background:#fff;transform:translateX(-102%);transition:transform .22s ease;overflow-y:auto;box-shadow:16px 0 50px rgba(29,43,95,.14)}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-overlay{display:none;position:fixed;z-index:11900;inset:0;background:rgba(16,24,39,.36);opacity:0;pointer-events:none;transition:opacity .18s ease}
.drawer-overlay.is-visible{display:block;opacity:1;pointer-events:auto}
.drawer-head{position:sticky;top:0;z-index:2;display:flex;align-items:center;justify-content:space-between;padding:14px 16px;background:#fff;border-bottom:1px solid #edf0f7}
.drawer-head .site-logo{justify-self:auto}
.drawer-close{width:38px;height:38px;border:0;border-radius:10px;background:#ECF0FF;color:#1D2B5F;font-size:26px;line-height:1}
.drawer-groups{padding:8px 16px 26px}
.drawer-groups section{padding:12px 0;border-bottom:1px solid #edf0f7}
.drawer-groups h2{font-size:13px;color:#8a92a6;margin:0 0 6px}
.drawer-groups a{display:inline-flex;width:50%;padding:8px 4px;color:#1D2B5F;font-weight:700;font-size:14px}
body.drawer-open{overflow:hidden}
.mobile-bottom{display:grid;position:fixed;z-index:8000;left:0;right:0;bottom:0;grid-template-columns:repeat(4,1fr);height:58px;background:#fff;border-top:1px solid var(--line);box-shadow:0 -8px 24px rgba(89,126,247,.08);padding-bottom:env(safe-area-inset-bottom)}
.mobile-bottom a{display:flex;align-items:center;justify-content:center;color:#1D2B5F;font-weight:700;font-size:13px}
.page-hero{padding:46px 0 28px}
.page-hero h1,.home-intro h1{font-size:clamp(28px,8vw,34px)}
.page-hero p,.home-intro p{font-size:16px}
.home-intro{padding-top:38px}
.home-intro .intro-row{display:block}
.home-intro .main-btn{margin-top:8px}
.section{padding:46px 0}
.card-grid{grid-template-columns:1fr}
.topic-matrix{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.topic-card{padding:15px}
.two-col,.app-banner{grid-template-columns:1fr}
.two-col.reverse .copy,.two-col.reverse .visual{order:initial}
.feature-media{height:220px!important}
.hero-carousel{height:210px}
.carousel-prev,.carousel-next{width:38px;height:38px}
.compare-grid,.compliance-grid,.read-path{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr 1fr}
.footer-brand{grid-column:1/-1}
.footer-bottom{display:block}
.footer-bottom p+p{margin-top:10px}
.article{width:min(100% - 32px,860px);padding-bottom:56px}
.article h2{font-size:24px}
.article p,.article li{font-size:16px}
.article .media{height:220px}
.container{width:min(100% - 32px,1200px)}
}

@media(max-width:420px){
.header-inner{padding:0 10px}
.mobile-register{min-width:78px;padding:0 10px;font-size:13px}
.site-logo img{max-width:124px}
.logo-placeholder{min-width:102px;font-size:14px}
.topic-matrix{grid-template-columns:repeat(2,minmax(0,1fr))}
.topic-card h3{font-size:17px}
.footer-grid{grid-template-columns:1fr}
.footer-brand{grid-column:auto}
.hero-carousel{height:190px}
}

@media(prefers-reduced-motion:reduce){
*{scroll-behavior:auto!important}
.main-btn::before{animation:none}
}