*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#F6F8FF;color:#222222;font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;overflow-x:hidden}body.drawer-open{overflow:hidden}a{color:#3159cf;text-decoration:none}a:hover{color:#597EF7}img{max-width:100%}.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-placeholder{display:inline-flex;align-items:center;justify-content:center;height:40px;min-width:132px;padding:0 14px;border-radius:12px;background:#fff;color:#1D2B5F;font-weight:800;letter-spacing:.08em}.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:10px;flex:0 0 auto}.login-link{font-weight:700;color:#1D2B5F}.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;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}.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-bar{background:#fff;border-top:1px solid rgba(89,126,247,.08);border-bottom:1px solid rgba(89,126,247,.12)}.channel-scroll{max-width:1200px;margin:0 auto;padding:0 20px;display:flex;align-items:center;gap:4px;overflow-x:auto;scrollbar-width:thin}.channel-scroll a{flex:0 0 auto;padding:11px 9px;color:#5B647A;font-size:14px;font-weight:700}.channel-scroll a:hover{color:#597EF7}.site-main{min-height:62vh}.container{width:min(1200px,calc(100% - 40px));margin:0 auto}.reading{width:min(840px,calc(100% - 40px));margin:0 auto}.section{padding:68px 0}.section.compact{padding:46px 0}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:#597EF7;font-weight:800;letter-spacing:.06em;font-size:14px}.eyebrow::before{content:"";width:24px;height:3px;border-radius:999px;background:#597EF7}.page-hero{padding:58px 0 28px}.page-hero .inner{width:min(900px,calc(100% - 40px));margin:0 auto}.page-hero h1,.home-intro h1{margin:12px 0 16px;color:#1D2B5F;font-size:clamp(38px,4vw,50px);line-height:1.15;letter-spacing:-.03em}.page-hero p,.home-intro p{margin:0;color:#5B647A;font-size:18px;line-height:1.82}.hero-slider{position:relative;height:360px;border-radius:18px;background:#101827;overflow:hidden;box-shadow:0 16px 40px rgba(89,126,247,.10)}.hero-slide{position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity .45s ease}.hero-slide.is-active{opacity:1;visibility:visible}.hero-slide .media{height:100%;aspect-ratio:auto;border-radius:0;background:#101827}.hero-slide .media img{object-fit:contain}.hero-slide .image-placeholder{height:100%;background:linear-gradient(135deg,#101827,#1d2b5f);color:#cbd6ff}.hero-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:4;width:42px;height:42px;border:0;border-radius:50%;background:rgba(255,255,255,.88);color:#1D2B5F;font-size:24px;cursor:pointer}.hero-prev{left:16px}.hero-next{right:16px}.hero-dots{position:absolute;left:0;right:0;bottom:14px;z-index:5;display:flex;justify-content:center;gap:8px}.hero-dot{width:9px;height:9px;padding:0;border:0;border-radius:50%;background:rgba(255,255,255,.45);cursor:pointer}.hero-dot.is-active{width:24px;border-radius:999px;background:#fff}.capsules{display:flex;gap:10px;overflow-x:auto;padding:4px 0 8px;scrollbar-width:thin}.capsules a{flex:0 0 auto;padding:10px 16px;border-radius:999px;background:#fff;border:1px solid rgba(89,126,247,.16);color:#1D2B5F;font-weight:700;box-shadow:0 8px 20px rgba(89,126,247,.06)}.observation{background:#fff;border:1px solid rgba(89,126,247,.16);border-radius:16px;padding:22px 24px;box-shadow:0 16px 40px rgba(89,126,247,.08);line-height:1.85;color:#35405c}.grid-3,.grid-4,.grid-2,.topic-grid{display:grid;gap:18px}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4,.topic-grid{grid-template-columns:repeat(4,1fr)}.grid-2{grid-template-columns:repeat(2,1fr)}.info-card,.topic-card,.soft-card,.step-card,.faq-item{background:#fff;border:1px solid rgba(89,126,247,.16);border-radius:18px;box-shadow:0 16px 40px rgba(89,126,247,.08)}.info-card,.topic-card,.soft-card{padding:22px}.info-card h2,.info-card h3,.topic-card h2,.topic-card h3,.soft-card h2,.soft-card h3{margin:0 0 10px;color:#1D2B5F}.info-card p,.topic-card p,.soft-card p{margin:0;color:#5B647A;line-height:1.75}.topic-card{min-height:154px;display:flex;flex-direction:column}.topic-card a:last-child{margin-top:auto;padding-top:14px;font-weight:800}.section-title{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:24px}.section-title h2{margin:0;color:#1D2B5F;font-size:30px}.section-title p{margin:0;color:#5B647A;max-width:640px;line-height:1.7}.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:242px;aspect-ratio:auto}.image-placeholder{display:flex;align-items:center;justify-content:center;width:100%;height:100%;min-height:160px;background:linear-gradient(135deg,#ECF0FF,#EAF7FF);color:#6072a3;font-weight:800;letter-spacing:.06em}.split{display:grid;grid-template-columns:1.05fr .95fr;gap:30px;align-items:center}.split.reverse{grid-template-columns:.95fr 1.05fr}.split.reverse .split-media{order:2}.split-copy h2{margin:0 0 14px;color:#1D2B5F;font-size:30px}.split-copy p{margin:0 0 14px;line-height:1.85;color:#39425a}.text-link{font-weight:800}.app-banner{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:center;padding:28px;border-radius:18px;background:linear-gradient(135deg,#ECF0FF,#EAF7FF);border:1px solid rgba(89,126,247,.16)}.app-banner h2{margin:0 0 12px;color:#1D2B5F}.app-banner p{margin:0;color:#4f5b77;line-height:1.8}.notice-pair{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.notice-pair>div{padding:22px;border-radius:16px;background:#fff;border:1px solid rgba(89,126,247,.16)}.notice-pair h2{margin:0 0 10px;color:#1D2B5F}.notice-pair p{margin:0;color:#5B647A;line-height:1.8}.faq-list{display:grid;gap:14px}.faq-item{padding:20px}.faq-item h2,.faq-item h3{margin:0 0 8px;color:#1D2B5F;font-size:19px}.faq-item p{margin:0;color:#4e5871;line-height:1.8}.article h2{margin:32px 0 12px;color:#1D2B5F;font-size:28px}.article h3{margin:24px 0 10px;color:#26386f;font-size:21px}.article p,.article li{font-size:17px;line-height:1.85}.article p{margin:0 0 16px}.article ul,.article ol{padding-left:1.4em}.article li+li{margin-top:8px}.article .lead{font-size:18px;color:#44506b}.article-nav{display:flex;flex-wrap:wrap;gap:10px;margin:20px 0}.article-nav a{padding:9px 13px;background:#fff;border:1px solid rgba(89,126,247,.16);border-radius:999px;font-weight:700}.steps{counter-reset:step;display:grid;gap:14px}.step-card{position:relative;padding:20px 20px 20px 64px;counter-increment:step}.step-card::before{content:counter(step);position:absolute;left:20px;top:20px;width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:#ECF0FF;color:#597EF7;font-weight:800}.step-card h2,.step-card h3{margin:0 0 8px;color:#1D2B5F}.step-card p{margin:0;line-height:1.8;color:#505b75}.compare{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.compare>section{padding:22px;border-radius:18px;background:#fff;border:1px solid rgba(89,126,247,.16)}.compare h2{margin:0 0 10px;font-size:20px;color:#1D2B5F}.compare p{margin:0;line-height:1.8;color:#566079}.quote-note{margin:24px 0;padding:18px 20px;border-left:4px solid #597EF7;border-radius:0 14px 14px 0;background:#ECF0FF;color:#344160;line-height:1.8}.site-footer{background:#1F1F1F;color:#D7DCE8;padding:48px 0 92px}.footer-grid{width:min(1200px,calc(100% - 40px));margin:0 auto;display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px}.footer-brand img{width:auto;height:42px;object-fit:contain;filter:brightness(1.08)}.footer-name{font-size:24px;font-weight:800;color:#fff}.footer-brand p{line-height:1.8;color:#b9c0cf}.site-footer h2{font-size:17px;color:#fff;margin:0 0 14px}.site-footer a{display:block;color:#D7DCE8;margin:8px 0}.site-footer a:hover{color:#fff}.footer-bottom{width:min(1200px,calc(100% - 40px));margin:30px auto 0;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);display:flex;justify-content:space-between;gap:20px;line-height:1.75}.floating-tools{position:fixed;right:16px;top:48%;transform:translateY(-50%);z-index:500;display:flex;flex-direction:column;gap:8px;width:112px}.floating-tools>a,.floating-tools>button{min-height:40px;padding:8px 10px;border:1px solid rgba(89,126,247,.18);border-radius:12px;background:#fff;color:#3159cf;font:inherit;font-weight:700;box-shadow:0 10px 24px rgba(89,126,247,.10);cursor:pointer;text-align:center}.floating-tools .main-btn.mini{height:42px;min-width:0;color:#fff;border:0}.mobile-bottom{display:none}.mobile-drawer{position:fixed;inset:0 auto 0 0;width:min(84vw,320px);z-index:12000;background:#fff;transform:translateX(-104%);transition:transform .22s ease;overflow-y:auto;box-shadow:16px 0 40px rgba(29,43,95,.18)}.mobile-drawer.is-open{transform:translateX(0)}.drawer-overlay{position:fixed;inset:0;z-index:11000;background:rgba(16,24,39,.38);opacity:0;transition:opacity .22s ease}.drawer-overlay.is-open{opacity:1}.drawer-head{position:sticky;top:0;background:#fff;padding:14px 16px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #eef1f8}.drawer-logo img{height:38px;width:auto;object-fit:contain}.drawer-close{width:40px;height:40px;border:0;background:#ECF0FF;border-radius:50%;font-size:28px;color:#1D2B5F}.drawer-groups{padding:8px 16px 30px}.drawer-groups section{padding:12px 0;border-bottom:1px solid #eef1f8}.drawer-groups h2{font-size:14px;color:#8a93a8;margin:0 0 8px}.drawer-groups a{display:block;padding:10px 4px;color:#1D2B5F;font-weight:700}.home-intro{padding:28px 0 24px}.home-intro p{max-width:840px}.legal-strip{padding:18px 20px;background:#fff;border:1px solid rgba(89,126,247,.16);border-radius:16px;line-height:1.8;color:#4d5873}.related-links{display:flex;flex-wrap:wrap;gap:10px}.related-links a{padding:9px 12px;border-radius:10px;background:#ECF0FF;font-weight:700}.subtle{color:#5B647A}.center{text-align:center}
@media (min-width:1200px){.site-main{padding-right:68px}}
@media (max-width:1050px){.nav-core{gap:2px}.nav-core a{padding:8px 7px;font-size:14px}.header-actions{gap:7px}.grid-4,.topic-grid{grid-template-columns:repeat(3,1fr)}.floating-tools{display:none}.site-main{padding-right:0}}
@media (max-width:900px){.header-inner{min-height:64px;padding:0 14px;display:grid;grid-template-columns:86px minmax(0,1fr) 106px;gap:8px}.menu-toggle{display:flex;width:42px;height:42px;border:0;border-radius:12px;background:#fff;align-items:center;justify-content:center;flex-direction:column;gap:5px;box-shadow:0 8px 20px rgba(89,126,247,.08)}.menu-toggle span{width:20px;height:2px;background:#1D2B5F;border-radius:999px}.site-logo{justify-self:center;min-width:0}.site-logo img{height:36px;max-width:150px}.site-logo .logo-placeholder{min-width:0;padding:0 10px}.nav-core,.header-actions,.channel-bar{display:none}.mobile-register{display:inline-flex;justify-self:end;height:40px;min-width:94px;padding:0 14px;font-size:14px}.page-hero{padding-top:42px}.grid-3,.compare{grid-template-columns:1fr}.grid-4,.topic-grid{grid-template-columns:repeat(2,1fr)}.split,.split.reverse,.app-banner{grid-template-columns:1fr}.split.reverse .split-media{order:0}.hero-slider{height:290px}.footer-grid{grid-template-columns:repeat(2,1fr)}.mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:9000;height:64px;display:grid;grid-template-columns:repeat(4,1fr);align-items:center;background:#fff;border-top:1px solid rgba(89,126,247,.14);box-shadow:0 -8px 24px rgba(89,126,247,.10);padding-bottom:env(safe-area-inset-bottom)}.mobile-bottom a{text-align:center;color:#1D2B5F;font-size:14px;font-weight:800}.site-footer{padding-bottom:102px}.section{padding:52px 0}.notice-pair{grid-template-columns:1fr}.media.feature-media{height:auto;aspect-ratio:16/9}}
@media (max-width:620px){.container,.reading,.page-hero .inner{width:min(100% - 28px,1200px)}.page-hero h1,.home-intro h1{font-size:clamp(28px,8vw,34px)}.page-hero p,.home-intro p{font-size:16px}.section{padding:44px 0}.section.compact{padding:34px 0}.section-title{display:block}.section-title h2{font-size:26px;margin-bottom:8px}.grid-2{grid-template-columns:1fr}.hero-slider{height:210px;border-radius:16px}.hero-arrow{width:36px;height:36px;font-size:20px}.hero-prev{left:10px}.hero-next{right:10px}.topic-grid{gap:12px}.topic-card{padding:16px;min-height:142px}.topic-card h3{font-size:17px}.info-card,.soft-card{padding:18px}.article p,.article li{font-size:16px}.article h2{font-size:25px}.footer-grid{grid-template-columns:1fr}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:10px}.header-inner{grid-template-columns:76px minmax(0,1fr) 100px}.mobile-register{min-width:90px;padding:0 12px}.site-logo img{max-width:138px}}
