*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;overflow-x:hidden;background:#F6F8FF;color:#222;font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.8}
img,svg,video{max-width:100%}
a{color:#405FCB;text-decoration:none}
a:hover{color:#597EF7}
button,input,select{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{display:flex;align-items:center;flex:0 0 auto}
.site-logo img{display:block;height:40px;width:auto;max-width:168px;object-fit:contain}
.logo-fallback{display:inline-flex;align-items:center;height:40px;padding:0 13px;border-radius:12px;background:#fff;color:#1D2B5F;font-weight:800;letter-spacing:.04em;white-space:nowrap}
.logo-fallback.light{background:rgba(255,255,255,.08);color:#fff}
.nav-core{display:flex;align-items:center;gap:8px;white-space:nowrap;flex-wrap:nowrap;min-width:0}
.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;flex:0 0 auto}
.login-link{display:inline-flex;align-items:center;justify-content:center;height:42px;padding:0 13px;color:#1D2B5F;font-weight:700;white-space:nowrap}
.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;border-radius:999px;text-decoration:none;font-weight:700;box-shadow:0 10px 24px rgba(89,126,247,.28);white-space:nowrap}
.main-btn:hover{color:#fff;transform:translateY(-1px)}
.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%)}}
.mobile-register,.menu-toggle{display:none}
.channel-strip{background:#fff;border-top:1px solid rgba(89,126,247,.08);border-bottom:1px solid rgba(89,126,247,.10)}
.channel-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;gap:3px;overflow-x:auto;padding:9px 20px;scrollbar-width:thin;white-space:nowrap}
.channel-inner a{flex:0 0 auto;color:#5B647A;padding:5px 9px;border-radius:999px;font-size:14px}
.channel-inner a:hover{color:#597EF7;background:#F6F8FF}
.site-main{min-height:60vh;padding-bottom:40px}
.container{width:min(1200px,calc(100% - 40px));margin:0 auto}
.reading{width:min(860px,calc(100% - 40px));margin:0 auto}
.hero{padding:64px 0 28px}
.hero.compact{padding-bottom:18px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:#597EF7;font-weight:800;letter-spacing:.08em;font-size:13px;text-transform:uppercase}
.hero h1,.page-hero h1{margin:10px 0 14px;color:#1D2B5F;font-size:clamp(38px,5vw,50px);line-height:1.15;letter-spacing:-.03em}
.hero p,.page-hero p{max-width:780px;margin:0;color:#5B647A;font-size:18px;line-height:1.85}
.page-hero{padding:58px 0 30px}
.section{padding:56px 0}
.section.tight{padding:32px 0}
.section-title{margin:0 0 10px;color:#1D2B5F;font-size:30px;line-height:1.3}
.section-lead{margin:0 0 24px;color:#5B647A;max-width:780px}
.surface{background:#fff;border:1px solid rgba(89,126,247,.16);box-shadow:0 16px 40px rgba(89,126,247,.10);border-radius:18px}
.pad{padding:28px}
.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{padding:24px;background:#fff;border:1px solid rgba(89,126,247,.16);border-radius:18px;box-shadow:0 12px 28px rgba(89,126,247,.08)}
.info-card h2,.info-card h3{margin:0 0 8px;color:#1D2B5F;line-height:1.35}
.info-card h2{font-size:23px}
.info-card h3{font-size:19px}
.info-card p{margin:0;color:#5B647A}
.info-card a{display:inline-block;margin-top:14px;font-weight:800}
.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-placeholder{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#ECF0FF,#EAF7FF);color:#8290b8;font-weight:700;letter-spacing:.04em}
.media.card-media{height:172px;aspect-ratio:auto}
.media.feature-media{height:244px;aspect-ratio:auto}
.split{display:grid;grid-template-columns:minmax(0,1.02fr) minmax(0,.98fr);gap:30px;align-items:center}
.split.reverse .media-wrap{order:2}
.split-copy h2{margin:0 0 12px;color:#1D2B5F;font-size:30px;line-height:1.35}
.split-copy p{margin:0 0 14px}
.tag-row,.quick-pills{display:flex;gap:10px;overflow-x:auto;white-space:nowrap;padding-bottom:5px}
.quick-pills a,.tag{flex:0 0 auto;background:#fff;border:1px solid rgba(89,126,247,.16);border-radius:999px;padding:8px 14px;color:#405FCB;font-weight:700}
.observe-bar{display:flex;gap:18px;align-items:flex-start;padding:20px 24px}
.observe-bar strong{color:#1D2B5F;white-space:nowrap}
.observe-bar p{margin:0;color:#5B647A}
.topic-card{padding:18px;background:#fff;border-radius:18px;border:1px solid rgba(89,126,247,.14)}
.topic-card h3{margin:0 0 8px;color:#1D2B5F;font-size:18px}
.topic-card p{margin:0;color:#5B647A;font-size:14px}
.topic-card a{display:inline-block;margin-top:10px;font-weight:800}
.article{color:#222}
.article h2{margin:34px 0 10px;color:#1D2B5F;font-size:28px;line-height:1.35}
.article h3{margin:26px 0 8px;color:#1D2B5F;font-size:21px}
.article p{margin:0 0 18px;font-size:17px;line-height:1.86}
.article ul,.article ol{margin:12px 0 20px;padding-left:24px}
.article li{margin:7px 0}
.notice{padding:20px 22px;border-left:4px solid #597EF7;background:#fff;border-radius:14px;box-shadow:0 10px 24px rgba(89,126,247,.07)}
.notice strong{color:#1D2B5F}
.toc{padding:22px;background:#fff;border:1px solid rgba(89,126,247,.16);border-radius:18px}
.toc h2{margin:0 0 10px;font-size:22px;color:#1D2B5F}
.toc a{display:block;padding:7px 0;border-bottom:1px dashed #DDE3F2}
.toc a:last-child{border-bottom:0}
.qa-list details{background:#fff;border:1px solid rgba(89,126,247,.14);border-radius:16px;padding:0 18px;margin:12px 0}
.qa-list summary{cursor:pointer;color:#1D2B5F;font-weight:800;padding:17px 0}
.qa-list details p{margin:0;padding:0 0 18px;color:#5B647A}
.qa-static{background:#fff;border:1px solid rgba(89,126,247,.14);border-radius:16px;padding:20px;margin:14px 0}
.qa-static h2,.qa-static h3{margin:0 0 8px;color:#1D2B5F}
.qa-static p{margin:0;color:#5B647A}
.steps{counter-reset:step;display:grid;gap:14px}
.step{position:relative;padding:20px 20px 20px 66px;background:#fff;border:1px solid rgba(89,126,247,.16);border-radius:16px}
.step:before{counter-increment:step;content:counter(step);position:absolute;left:20px;top:20px;width:30px;height:30px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:#ECF0FF;color:#597EF7;font-weight:800}
.step h3{margin:0 0 6px;color:#1D2B5F}
.step p{margin:0;color:#5B647A}
.compare{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.compare>div{padding:24px;background:#fff;border-radius:18px;border:1px solid rgba(89,126,247,.16)}
.compare h2,.compare h3{margin:0 0 9px;color:#1D2B5F}
.link-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.link-list a{display:block;padding:16px 18px;border-radius:14px;background:#fff;border:1px solid rgba(89,126,247,.14);font-weight:800}
.banner{padding:28px 30px;background:linear-gradient(135deg,#fff,#ECF0FF 65%,#EAF7FF);border-radius:18px;border:1px solid rgba(89,126,247,.16);display:flex;align-items:center;justify-content:space-between;gap:18px}
.banner h2{margin:0 0 6px;color:#1D2B5F}
.banner p{margin:0;color:#5B647A;max-width:760px}
.compliance{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.compliance div{padding:20px;border-radius:16px;background:#fff;border:1px solid rgba(89,126,247,.14)}
.compliance h3{margin:0 0 6px;color:#1D2B5F}
.compliance p{margin:0;color:#5B647A}
.slider{position:relative;height:360px;border-radius:18px;overflow:hidden;background:#101827;box-shadow:0 16px 40px rgba(16,24,39,.18)}
.slide{position:absolute;inset:0;display:none;align-items:center;justify-content:center}
.slide.is-active{display:flex}
.slide img{width:100%;height:100%;object-fit:contain;object-position:center}
.slide-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:radial-gradient(circle at 30% 30%,#23365f 0,#101827 70%);color:#dce7ff;font-weight:800;letter-spacing:.05em}
.slider-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:3;width:42px;height:42px;border:0;border-radius:50%;background:rgba(255,255,255,.9);color:#1D2B5F;cursor:pointer;font-size:24px}
.slider-prev{left:16px}
.slider-next{right:16px}
.slider-dots{position:absolute;left:0;right:0;bottom:14px;display:flex;justify-content:center;gap:8px;z-index:3}
.slider-dot{width:9px;height:9px;border:0;border-radius:50%;padding:0;background:rgba(255,255,255,.4);cursor:pointer}
.slider-dot.is-active{background:#fff;transform:scale(1.25)}
.site-footer{background:#1F1F1F;color:#D7DCE8;padding:54px 0 20px}
.footer-grid{width:min(1200px,calc(100% - 40px));margin:0 auto;display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:34px}
.site-footer h2{margin:0 0 12px;color:#fff;font-size:17px}
.site-footer a{display:block;color:#D7DCE8;padding:3px 0}
.site-footer a:hover{color:#fff}
.footer-logo img{display:block;width:auto;height:40px;max-width:168px;object-fit:contain}
.footer-brand p{margin:14px 0 0;max-width:310px;color:#B7BFCE}
.footer-bottom{width:min(1200px,calc(100% - 40px));margin:30px auto 0;padding-top:18px;border-top:1px solid rgba(255,255,255,.1);font-size:13px;color:#AAB3C3}
.footer-bottom span{float:right}
.floating-tools{position:fixed;right:14px;top:50%;transform:translateY(-40%);z-index:8500;width:112px;display:flex;flex-direction:column;gap:8px}
.floating-tools>a,.floating-tools>button{min-height:40px;border:1px solid rgba(89,126,247,.16);border-radius:12px;background:#fff;color:#405FCB;font-weight:800;display:flex;align-items:center;justify-content:center;padding:7px 8px;box-shadow:0 8px 20px rgba(89,126,247,.10);cursor:pointer}
.floating-tools .main-btn{color:#fff;border:0}
.mobile-bottom{display:none}
.mobile-drawer,.drawer-overlay{display:none}
.drawer-lock{overflow:hidden}
.badge{display:inline-flex;padding:4px 10px;border-radius:999px;background:#ECF0FF;color:#597EF7;font-size:13px;font-weight:800}
.mini-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px;color:#68738b;font-size:14px}
.index-hero{padding:34px 0 18px}
.index-hero h1{margin:0 0 18px;color:#1D2B5F;font-size:clamp(30px,4vw,46px);line-height:1.18}
.index-hero .lead{font-size:18px;color:#5B647A;max-width:850px}
.topic-matrix{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.simple-table{width:100%;border-collapse:collapse;background:#fff;border-radius:16px;overflow:hidden}
.simple-table th,.simple-table td{padding:14px 16px;border-bottom:1px solid #E7EBF5;text-align:left}
.simple-table th{color:#1D2B5F;background:#F4F7FF}
.simple-table tr:last-child td{border-bottom:0}
.quote-note{padding:22px 24px;background:#ECF0FF;border-radius:18px;color:#344263}
.quote-note p{margin:0}
.mobile-only{display:none}

@media (min-width:1260px){
.site-main{padding-right:68px}
}

@media (max-width:1080px){
.nav-core{gap:2px}
.nav-core a{padding:8px 7px;font-size:14px}
.header-actions .login-link{display:none}
.grid-4,.topic-matrix{grid-template-columns:repeat(3,minmax(0,1fr))}
.floating-tools{display:none}
.site-main{padding-right:0}
}

@media (max-width:820px){
body{padding-bottom:66px}
.site-header{position:sticky}
.header-inner{min-height:64px;padding:0 14px;gap:10px;display:grid;grid-template-columns:96px 1fr 106px}
.nav-core,.header-actions,.channel-strip{display:none}
.menu-toggle{display:inline-flex;width:44px;height:44px;border:0;background:transparent;flex-direction:column;justify-content:center;gap:5px;padding:10px;justify-self:start}
.menu-toggle span{display:block;width:23px;height:2px;border-radius:2px;background:#1D2B5F}
.site-logo{justify-self:center;min-width:0}
.site-logo img{height:36px;max-width:144px}
.logo-fallback{height:36px;font-size:14px;padding:0 9px}
.mobile-register{display:inline-flex;justify-self:end;height:40px;min-width:96px;padding:0 12px;font-size:14px}
.mobile-drawer{display:block;position:fixed;inset:0 auto 0 0;width:min(84vw,320px);background:#fff;z-index:12000;transform:translateX(-102%);transition:transform .2s ease;overflow-y:auto;box-shadow:18px 0 40px rgba(29,43,95,.18)}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-overlay{display:none;position:fixed;inset:0;background:rgba(16,24,39,.42);z-index:11000;opacity:0;pointer-events:none;transition:opacity .18s ease}
.drawer-overlay.is-visible{display:block;opacity:1;pointer-events:auto}
.drawer-head{height:70px;display:flex;align-items:center;justify-content:space-between;padding:0 16px;border-bottom:1px solid #E7EBF5}
.drawer-logo img{display:block;height:36px;width:auto;max-width:150px;object-fit:contain}
.drawer-close{width:42px;height:42px;border:0;border-radius:12px;background:#F2F5FC;color:#1D2B5F;font-size:28px;line-height:1}
.drawer-groups{padding:10px 16px 30px}
.drawer-groups section{padding:9px 0;border-bottom:1px solid #EDF0F7}
.drawer-groups h2{margin:0 0 5px;color:#7B8498;font-size:12px;letter-spacing:.12em}
.drawer-groups a{display:block;padding:7px 0;color:#26365f;font-weight:700}
.mobile-bottom{position:fixed;z-index:9000;left:0;right:0;bottom:0;height:60px;background:#fff;border-top:1px solid #E0E5F0;display:grid;grid-template-columns:repeat(4,1fr);box-shadow:0 -8px 20px rgba(89,126,247,.08)}
.mobile-bottom a{display:flex;align-items:center;justify-content:center;color:#3B4C78;font-size:14px;font-weight:800}
.container,.reading{width:min(100% - 28px,1200px)}
.reading{max-width:860px}
.hero,.page-hero{padding:42px 0 24px}
.hero h1,.page-hero h1{font-size:clamp(28px,8vw,34px)}
.hero p,.page-hero p{font-size:16px}
.section{padding:42px 0}
.section-title{font-size:26px}
.grid-3{grid-template-columns:1fr 1fr}
.grid-4,.topic-matrix{grid-template-columns:repeat(2,minmax(0,1fr))}
.split,.compare{grid-template-columns:1fr}
.split.reverse .media-wrap{order:0}
.footer-grid{grid-template-columns:1fr 1fr;gap:24px}
.footer-bottom span{float:none;display:block;margin-top:8px}
.slider{height:220px}
.slider-arrow{width:38px;height:38px}
.compliance{grid-template-columns:1fr}
.link-list{grid-template-columns:1fr}
.mobile-only{display:block}
}

@media (max-width:520px){
.header-inner{grid-template-columns:82px minmax(0,1fr) 104px;padding:0 10px;gap:5px}
.site-logo img{height:32px;max-width:126px}
.mobile-register{min-width:94px;padding:0 10px}
.grid-2,.grid-3{grid-template-columns:1fr}
.topic-matrix{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.topic-card{padding:14px}
.topic-card h3{font-size:16px}
.slider{height:195px}
.slider-arrow{display:none}
.observe-bar{display:block}
.observe-bar strong{display:block;margin-bottom:6px}
.footer-grid{grid-template-columns:1fr}
.banner{align-items:flex-start;flex-direction:column}
.media.feature-media{height:220px}
.section{padding:40px 0}
.pad{padding:22px}
.article p{font-size:16px}
.article h2{font-size:25px}
.index-hero{padding-top:24px}
.index-hero h1{font-size:31px}
}

@media (prefers-reduced-motion:reduce){
*{scroll-behavior:auto!important;animation:none!important;transition:none!important}
}