:root{--primary:#597EF7;--deep:#1D2B5F;--text:#222;--muted:#5B647A;--page:#F6F8FF;--soft:#ECF0FF;--sky:#EAF7FF;--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;background:var(--page);color:var(--text);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.8;overflow-x:hidden}img,svg,video{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:inline-flex;align-items:center;min-width:160px;text-decoration:none}.site-logo img{display:block;height:40px;width:auto;max-width:168px;object-fit:contain}.logo-fallback{font-weight:900;color:var(--deep);font-size:21px;white-space:nowrap}.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:14px}.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}.plain-login{font-weight:700;color:var(--deep);text-decoration:none;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:#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::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,.09);border-bottom:1px solid rgba(89,126,247,.08)}.channel-inner{max-width:1200px;margin:0 auto;padding:0 20px;display:flex;align-items:center;gap:4px;overflow-x:auto;scrollbar-width:thin}.channel-inner a{flex:0 0 auto;color:#5B647A;padding:9px 10px;text-decoration:none;font-size:13px;font-weight:700;white-space:nowrap}.channel-inner a:hover,.channel-inner a.is-current{color:#597EF7}.site-main{min-height:60vh}.page-wrap{max-width:1200px;margin:0 auto;padding:0 20px}.section{padding:64px 0}.section.compact{padding:40px 0}.page-hero{padding:62px 0 40px;background:linear-gradient(180deg,#EDF3FF 0%,#F6F8FF 100%)}.page-hero .inner{max-width:1200px;margin:0 auto;padding:0 20px}.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:800;color:var(--primary);letter-spacing:.08em}.eyebrow::before{content:"";width:26px;height:2px;background:var(--primary)}h1,h2,h3{color:var(--deep);line-height:1.25;margin-top:0}h1{font-size:clamp(38px,4.3vw,50px);margin:10px 0 18px;letter-spacing:-.02em}h2{font-size:clamp(25px,2.8vw,34px);margin-bottom:16px}h3{font-size:19px;margin-bottom:8px}.lead{max-width:820px;color:#44506F;font-size:18px;line-height:1.85;margin:0}.reading{max-width:860px;margin:0 auto}.reading p{font-size:17px;margin:0 0 20px}.muted{color:var(--muted)}.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))}.panel{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:var(--shadow)}.panel p:last-child{margin-bottom:0}.text-link{display:inline-flex;gap:6px;align-items:center;color:var(--primary);font-weight:800;text-decoration:none}.text-link::after{content:"→"}.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:grid;place-items:center;background:linear-gradient(135deg,#ECF0FF,#EAF7FF);color:#8A94AE;font-weight:800;letter-spacing:.08em}.media.card-media{height:172px;aspect-ratio:auto}.media.feature-media{height:248px;aspect-ratio:auto}.feature-row{display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:32px}.feature-row.reverse{grid-template-columns:.95fr 1.05fr}.feature-row.reverse .feature-copy{order:2}.feature-row.reverse .feature-media{order:1}.pill-row{display:flex;gap:10px;overflow-x:auto;padding:3px 0 8px}.pill-row a{flex:0 0 auto;padding:9px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);text-decoration:none;color:#415078;font-weight:700}.notice-strip{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px 22px;color:#3A476A}.hero-area{padding:34px 0 18px}.hero-carousel{position:relative;max-width:1200px;height:370px;margin:0 auto;background:#101827;border-radius:18px;overflow:hidden;box-shadow:0 18px 48px rgba(16,24,39,.18)}.hero-slide{position:absolute;inset:0;opacity:0;pointer-events:none;transition:opacity .45s ease}.hero-slide.is-active{opacity:1;pointer-events:auto}.hero-slide .media{height:100%;border-radius:0;background:#101827}.hero-slide .media-placeholder{background:linear-gradient(135deg,#101827,#1D2B5F);color:#CFD8F5}.carousel-prev,.carousel-next{position:absolute;top:50%;transform:translateY(-50%);width:42px;height:42px;border:0;border-radius:50%;background:rgba(255,255,255,.88);color:var(--deep);font-size:24px;cursor:pointer}.carousel-prev{left:18px}.carousel-next{right:18px}.carousel-dots{position:absolute;left:50%;bottom:16px;transform:translateX(-50%);display:flex;gap:8px}.carousel-dot{width:10px;height:10px;border:0;border-radius:50%;background:rgba(255,255,255,.42);padding:0;cursor:pointer}.carousel-dot.is-active{background:#fff;transform:scale(1.2)}.topic-card{display:flex;flex-direction:column;min-height:190px}.topic-card p{color:var(--muted);margin-top:0}.topic-card .text-link{margin-top:auto}.app-banner{background:linear-gradient(135deg,#1D2B5F,#597EF7);border-radius:18px;color:#fff;padding:30px}.app-banner h2,.app-banner p{color:#fff}.check-list,.step-list,.link-list{margin:0;padding:0;list-style:none}.check-list li,.step-list li{position:relative;padding:12px 0 12px 32px;border-bottom:1px solid rgba(89,126,247,.12)}.check-list li::before{content:"✓";position:absolute;left:0;top:12px;width:22px;height:22px;border-radius:50%;display:grid;place-items:center;background:#EAF7FF;color:#597EF7;font-weight:900;font-size:12px}.step-list{counter-reset:steps}.step-list li{counter-increment:steps;padding-left:48px}.step-list li::before{content:counter(steps);position:absolute;left:0;top:10px;width:30px;height:30px;border-radius:10px;display:grid;place-items:center;background:#597EF7;color:#fff;font-weight:900}.link-list a{display:flex;justify-content:space-between;gap:14px;padding:14px 0;border-bottom:1px solid rgba(89,126,247,.12);text-decoration:none;color:var(--deep);font-weight:700}.link-list a::after{content:"→";color:var(--primary)}.qa-list details{background:#fff;border:1px solid var(--line);border-radius:16px;padding:0 20px;margin-bottom:12px}.qa-list summary{cursor:pointer;list-style:none;font-weight:800;color:var(--deep);padding:18px 0}.qa-list summary::-webkit-details-marker{display:none}.qa-list p{margin:0 0 18px;color:#46516C}.qa-static .qa{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;margin-bottom:14px}.qa-static .qa p{margin-bottom:0}.callout{border-left:4px solid var(--primary);background:#fff;border-radius:0 16px 16px 0;padding:18px 22px}.mini-index{display:flex;gap:10px;flex-wrap:wrap}.mini-index a{background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 12px;text-decoration:none;color:var(--deep);font-weight:700}.site-footer{background:#1F1F1F;color:#D7DCE8;margin-top:50px}.footer-grid{max-width:1200px;margin:0 auto;padding:54px 20px 34px;display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:28px}.footer-grid h2{font-size:16px;color:#fff;margin-bottom:14px}.footer-grid a{display:block;color:#D7DCE8;text-decoration:none;padding:4px 0}.footer-brand p{max-width:360px;color:#BFC5D2}.footer-logo{display:inline-flex;margin-bottom:12px}.footer-logo img{height:40px;width:auto;max-width:168px;object-fit:contain}.footer-bottom{max-width:1200px;margin:0 auto;border-top:1px solid rgba(255,255,255,.1);padding:18px 20px 28px;display:flex;justify-content:space-between;gap:18px;color:#AEB5C3;font-size:13px}.floating-tools{position:fixed;right:14px;top:50%;transform:translateY(-50%);z-index:9000;width:112px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:10px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:8px}.floating-tools a,.floating-tools button{border:0;background:#fff;color:var(--primary);text-decoration:none;text-align:center;padding:8px 5px;border-radius:10px;font-weight:800;font-family:inherit;cursor:pointer}.floating-tools .float-main{height:40px;min-width:0;padding:0 10px;color:#fff;background:linear-gradient(135deg,#7580EE 0%,#597EF7 48%,#7AC4F5 100%)}.mobile-bottom{display:none}.drawer-overlay{position:fixed;inset:0;background:rgba(16,24,39,.35);z-index:10010;opacity:0;visibility:hidden;transition:.25s}.drawer-overlay.is-open{opacity:1;visibility:visible}.mobile-drawer{position:fixed;left:0;top:0;bottom:0;width:min(84vw,320px);background:#fff;z-index:10020;transform:translateX(-105%);transition:transform .28s ease;overflow-y:auto;padding-bottom:24px}.mobile-drawer.is-open{transform:translateX(0)}.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px;border-bottom:1px solid var(--line)}.drawer-logo img{height:38px;width:auto;max-width:160px;object-fit:contain}.drawer-close{width:40px;height:40px;border:0;border-radius:12px;background:#ECF0FF;color:var(--deep);font-size:25px;cursor:pointer}.drawer-groups{padding:4px 16px}.drawer-groups section{padding:12px 0;border-bottom:1px solid rgba(89,126,247,.1)}.drawer-groups h2{font-size:14px;margin-bottom:8px;color:#8790A7}.drawer-links{display:grid;grid-template-columns:1fr 1fr;gap:4px}.drawer-links a{text-decoration:none;color:var(--deep);font-weight:700;padding:9px;border-radius:10px}.drawer-links a:hover{background:#F6F8FF}.drawer-open{overflow:hidden}.mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:9500;background:#fff;border-top:1px solid var(--line);box-shadow:0 -8px 22px rgba(89,126,247,.08)}.mobile-bottom a{flex:1;text-align:center;text-decoration:none;color:var(--deep);font-weight:800;padding:10px 4px}.desktop-only{display:block}.tag{display:inline-block;border-radius:999px;padding:5px 10px;background:#ECF0FF;color:#597EF7;font-size:12px;font-weight:800;margin-right:6px}.split-note{display:grid;grid-template-columns:1fr 1fr;gap:18px}.quote-note{padding:20px;border-radius:16px;background:#EAF7FF;color:#31405F}.hero-copy{max-width:760px}.section-title-row{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:24px}.section-title-row p{margin:0;color:var(--muted);max-width:580px}.breadcrumbs{font-size:13px;color:#7A849B;margin-bottom:10px}.breadcrumbs a{color:#597EF7;text-decoration:none}.responsible-box{background:linear-gradient(135deg,#ECF0FF,#EAF7FF);border:1px solid var(--line);border-radius:18px;padding:26px}.stateless-table{width:100%;border-collapse:collapse;background:#fff;border-radius:16px;overflow:hidden;border:1px solid var(--line)}.stateless-table th,.stateless-table td{text-align:left;padding:14px 16px;border-bottom:1px solid var(--line);vertical-align:top}.stateless-table th{width:28%;color:var(--deep);background:#F9FAFF}.stateless-table tr:last-child th,.stateless-table tr:last-child td{border-bottom:0}
@media(min-width:1300px){.site-main{padding-right:68px}}
@media(max-width:1100px){.nav-core{gap:2px}.nav-core a{padding:8px 7px;font-size:13px}.header-inner{gap:10px}.grid-4{grid-template-columns:repeat(3,minmax(0,1fr))}.floating-tools{display:none}.site-main{padding-right:0}}
@media(max-width:900px){body{padding-bottom:62px}.header-inner{min-height:66px;padding:0 14px;display:grid;grid-template-columns:92px minmax(0,1fr) 112px;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:4px;padding:0;box-shadow:0 6px 16px rgba(89,126,247,.08)}.menu-toggle span{width:19px;height:2px;background:#1D2B5F;border-radius:2px}.site-logo{min-width:0;justify-content:center}.site-logo img{height:36px;max-width:150px}.nav-core,.header-actions,.channel-bar{display:none}.mobile-register{display:inline-flex;justify-self:end;height:40px;min-width:104px;padding:0 12px;font-size:13px}.mobile-bottom{display:flex}.hero-carousel{height:285px;border-radius:16px}.grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-4{grid-template-columns:repeat(3,minmax(0,1fr))}.feature-row,.feature-row.reverse{grid-template-columns:1fr}.feature-row.reverse .feature-copy,.feature-row.reverse .feature-media{order:initial}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.footer-bottom{flex-direction:column}.section{padding:52px 0}.page-hero{padding:46px 0 32px}}
@media(max-width:640px){.page-wrap,.page-hero .inner{padding-left:16px;padding-right:16px}.header-inner{grid-template-columns:48px minmax(0,1fr) 106px}.site-logo img{height:34px;max-width:132px}.mobile-register{min-width:100px;padding:0 10px}.hero-area{padding:18px 0 12px}.hero-carousel{height:210px;margin:0 16px}.carousel-prev,.carousel-next{width:36px;height:36px;font-size:20px}.carousel-prev{left:10px}.carousel-next{right:10px}h1{font-size:clamp(28px,8.8vw,34px)}h2{font-size:25px}.lead{font-size:16px}.reading p{font-size:16px}.section{padding:44px 0}.section.compact{padding:30px 0}.grid-2,.grid-3{grid-template-columns:1fr}.grid-4{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.panel{padding:18px;border-radius:16px}.topic-card{min-height:176px}.media.feature-media{height:220px}.media.card-media{height:160px}.split-note{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr;padding-top:42px}.footer-brand{grid-column:auto}.footer-bottom{padding-bottom:20px}.section-title-row{display:block}.section-title-row p{margin-top:8px}.stateless-table th,.stateless-table td{display:block;width:100%}.stateless-table th{border-bottom:0;padding-bottom:6px}.stateless-table td{padding-top:6px}.drawer-links{grid-template-columns:1fr 1fr}}
@media(max-width:390px){.header-inner{grid-template-columns:44px minmax(0,1fr) 98px;padding:0 10px}.site-logo img{max-width:122px}.mobile-register{min-width:92px;font-size:12px;padding:0 8px}.menu-toggle{width:40px;height:40px}.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}.panel{padding:16px}.topic-card h3{font-size:17px}}