:root{--bg:#F4FBFF;--card:#fff;--soft:#EAF7FF;--soft2:#F8FDFF;--blue:#1CA8F6;--blue2:#38C7FF;--deep:#0877C9;--ink:#223044;--nav:#1D2A3A;--muted:#5F7082;--note:#7A8A9A;--foot:#082A46;--line:rgba(28,168,246,.14);--shadow:0 16px 40px rgba(8,119,201,.08)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.82;overflow-x:hidden}a{color:var(--deep)}img{max-width:100%}button{font:inherit}.site-header{position:sticky;top:0;z-index:9999;width:100%;background:rgba(255,255,255,.95);backdrop-filter:blur(12px);box-shadow:0 8px 24px rgba(8,119,201,.08)}.header-inner{max-width:1180px;min-height:72px;margin:0 auto;padding:0 18px;display:flex;align-items:center;justify-content:space-between;gap:16px}.brand-logo{display:flex;align-items:center;min-width:130px;text-decoration:none}.brand-logo img{display:block;height:40px;width:auto;max-width:168px;object-fit:contain}.logo-placeholder{display:block;width:152px;height:36px;border-radius:10px;background:linear-gradient(90deg,#EAF7FF,#d9f2ff)}.nav-core{display:flex;align-items:center;justify-content:center;gap:4px;min-width:0}.nav-core a{color:var(--nav);padding:9px 12px;font-weight:700;text-decoration:none;white-space:nowrap;border-radius:10px}.nav-core a:hover,.nav-core a.is-current{color:var(--deep);background:var(--soft)}.main-btn{display:inline-flex;align-items:center;justify-content:center;height:42px;min-width:92px;padding:0 20px;background:linear-gradient(135deg,#38C7FF 0%,#1CA8F6 48%,#0877C9 100%);color:#fff;border-radius:999px;text-decoration:none;font-weight:700;box-shadow:0 12px 26px rgba(8,119,201,.18);white-space:nowrap}.menu-toggle{display:none;width:42px;height:42px;padding:9px;border:1px solid var(--line);border-radius:12px;background:#fff}.menu-toggle span{display:block;height:2px;background:var(--deep);margin:5px 0;border-radius:2px}.channel-bar{background:var(--soft);border-bottom:1px solid var(--line)}.channel-inner{max-width:1180px;margin:0 auto;padding:9px 18px;display:flex;gap:7px;overflow-x:auto;scrollbar-width:none}.channel-inner::-webkit-scrollbar{display:none}.channel-inner a{flex:0 0 auto;padding:5px 9px;color:var(--muted);font-size:14px;font-weight:700;text-decoration:none;white-space:nowrap;border-radius:999px}.channel-inner a:hover{color:var(--deep);background:#fff}.site-main{max-width:1180px;margin:0 auto;padding:30px 78px 70px 18px}.section{padding:46px 0}.section-tight{padding:22px 0}.kicker{display:inline-flex;align-items:center;gap:7px;color:var(--deep);font-size:13px;font-weight:800;letter-spacing:.08em}.kicker:before{content:"";width:22px;height:3px;border-radius:3px;background:linear-gradient(90deg,var(--blue2),var(--deep))}.lead-shell{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(280px,.65fr);gap:22px;align-items:stretch}.lead-copy,.lead-links,.content-card,.note-card,.feature-panel,.index-tile,.faq-item{background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow)}.lead-copy{padding:34px}.lead-copy h1{margin:8px 0 14px;color:var(--deep);font-size:clamp(34px,4vw,46px);line-height:1.22}.lead-copy p{margin:0;color:var(--muted);font-size:17px}.lead-links{padding:20px;display:grid;gap:10px}.lead-links a{padding:13px 14px;background:var(--soft2);border:1px solid var(--line);border-radius:12px;text-decoration:none;color:var(--nav);font-weight:700}.lead-links a span{display:block;color:var(--note);font-size:13px;font-weight:400}.carousel{position:relative;height:340px;border-radius:16px;background:#fff;border:1px solid var(--line);overflow:hidden;box-shadow:var(--shadow)}.slide{position:absolute;inset:0;opacity:0;pointer-events:none;transition:opacity .25s ease}.slide.is-active{opacity:1;pointer-events:auto}.slide .media{height:100%;aspect-ratio:auto;border-radius:0}.carousel-prev,.carousel-next{position:absolute;top:50%;transform:translateY(-50%);z-index:5;width:42px;height:42px;border:1px solid var(--line);border-radius:50%;background:rgba(255,255,255,.9);color:var(--deep);font-size:28px;line-height:1}.carousel-prev{left:14px}.carousel-next{right:14px}.carousel-dots{position:absolute;left:50%;bottom:14px;transform:translateX(-50%);display:flex;gap:8px;z-index:5}.carousel-dot{width:9px;height:9px;padding:0;border:0;border-radius:50%;background:rgba(8,119,201,.26)}.carousel-dot.is-active{background:var(--deep);transform:scale(1.2)}.section-head{display:flex;justify-content:space-between;gap:20px;align-items:end;margin:0 0 18px}.section-head h2{margin:0;color:var(--deep);font-size:28px;line-height:1.25}.section-head p{margin:0;color:var(--note)}.index-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.index-tile{padding:22px;text-decoration:none}.index-tile strong{display:block;color:var(--deep);font-size:20px;margin-bottom:7px}.index-tile p{margin:0;color:var(--muted);font-size:15px}.topic-strip{display:flex;gap:9px;overflow-x:auto;padding:4px 0 8px;scrollbar-width:none}.topic-strip::-webkit-scrollbar{display:none}.topic-strip a{flex:0 0 auto;text-decoration:none;color:var(--deep);background:#fff;border:1px solid var(--line);padding:8px 15px;border-radius:999px;font-weight:700}.three-info{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:18px}.feature-panel{padding:26px}.feature-panel h2,.feature-panel h3{color:var(--deep);margin:0 0 10px}.feature-panel p{margin:0;color:var(--muted)}.page-intro{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(260px,.8fr);gap:20px;padding:24px 0 10px;align-items:stretch}.intro-copy{padding:30px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow)}.intro-copy h1{margin:8px 0 13px;color:var(--deep);font-size:clamp(32px,4vw,44px);line-height:1.24}.intro-copy p{margin:0;color:var(--muted);font-size:17px}.intro-aside{padding:24px;background:linear-gradient(180deg,#fff,var(--soft));border:1px solid var(--line);border-radius:16px}.intro-aside h2{margin:0 0 10px;color:var(--deep);font-size:18px}.intro-aside a{display:block;padding:8px 0;border-bottom:1px solid var(--line);text-decoration:none;color:var(--nav)}.layout-a{display:grid;grid-template-columns:minmax(0,.72fr) minmax(0,1.28fr);gap:20px;align-items:start}.layout-b{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(280px,.7fr);gap:20px;align-items:start}.content-card{padding:28px}.content-card h2,.content-card h3{color:var(--deep);line-height:1.35}.content-card h2{font-size:25px;margin:0 0 10px}.content-card h3{font-size:20px;margin:24px 0 8px}.content-card p{margin:0 0 16px}.content-card p:last-child{margin-bottom:0}.content-card ul,.content-card ol{padding-left:22px}.content-card li{margin:7px 0}.sticky-list{position:sticky;top:118px}.jump-list{display:grid;gap:10px}.jump-list a{padding:12px 14px;border-radius:12px;background:var(--soft2);border:1px solid var(--line);text-decoration:none;color:var(--nav);font-weight:700}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;counter-reset:item}.step{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px}.step:before{counter-increment:item;content:counter(item,decimal-leading-zero);display:inline-flex;width:34px;height:34px;align-items:center;justify-content:center;border-radius:50%;background:var(--soft);color:var(--deep);font-weight:800}.step h3{margin:12px 0 7px;color:var(--deep)}.step p{margin:0;color:var(--muted)}.media{position:relative;width:100%;max-width:100%;overflow:hidden;border-radius:14px;background:#EAF7FF;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;background:linear-gradient(135deg,#EAF7FF,#dff4ff)}.media-feature{height:230px;aspect-ratio:auto}.media-card{height:170px;aspect-ratio:auto}.image-note{padding:12px 0 0;color:var(--note);font-size:13px}.related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.related-grid a{padding:15px;background:#fff;border:1px solid var(--line);border-radius:12px;text-decoration:none;color:var(--nav);font-weight:700;text-align:center}.notice-band{padding:22px 26px;border-radius:16px;background:var(--soft);border:1px solid var(--line);color:var(--muted)}.notice-band strong{color:var(--deep)}.faq-list{display:grid;gap:14px}.faq-item{padding:24px}.faq-item h2{margin:0 0 8px;color:var(--deep);font-size:20px}.faq-item p{margin:0}.service-map{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.service-map a{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;text-decoration:none}.service-map strong{display:block;color:var(--deep);font-size:20px}.service-map span{display:block;color:var(--muted);margin-top:6px}.float-tools{position:fixed;right:14px;top:44%;transform:translateY(-50%);z-index:8000;width:56px;display:grid;gap:7px}.float-tools a,.float-tools button{min-height:48px;padding:7px 5px;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--deep);text-decoration:none;font-size:12px;font-weight:700;text-align:center;box-shadow:0 8px 22px rgba(8,119,201,.08)}.float-tools .float-register{background:linear-gradient(135deg,#38C7FF,#0877C9);color:#fff}.site-footer{background:var(--foot);color:#EAF8FF}.footer-shell{max-width:1180px;margin:0 auto;padding:46px 18px 30px;display:grid;grid-template-columns:1.4fr repeat(3,.8fr);gap:28px}.footer-logo img{height:40px}.footer-intro p{color:#cfeafa;margin:14px 0 0;max-width:360px}.footer-col h2{font-size:16px;margin:0 0 10px;color:#fff}.footer-col a{display:block;color:#D9F3FF;text-decoration:none;padding:4px 0}.footer-rule{max-width:1180px;margin:0 auto;padding:18px;border-top:1px solid rgba(255,255,255,.12);display:flex;gap:16px;flex-wrap:wrap;color:#c8e9f8;font-size:13px}.footer-rule strong{margin-left:auto;color:#fff}.mobile-bottom{display:none}.mobile-drawer,.drawer-mask{display:none}.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:15px;border-bottom:1px solid var(--line)}.drawer-close{width:38px;height:38px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--deep);font-size:25px}.drawer-scroll{height:calc(100vh - 68px);overflow-y:auto;padding:10px 16px 30px}.drawer-scroll section{padding:9px 0 14px;border-bottom:1px solid var(--line)}.drawer-scroll h2{font-size:13px;color:var(--note);margin:0 0 6px}.drawer-scroll a{display:block;text-decoration:none;color:var(--nav);padding:7px 2px}.drawer-open{overflow:hidden}
@media(max-width:980px){.site-main{padding:22px 16px 92px}.channel-bar,.nav-core,.float-tools{display:none}.header-inner{min-height:64px;padding:0 12px;gap:8px}.menu-toggle{display:block;flex:0 0 42px}.brand-logo{position:absolute;left:50%;transform:translateX(-50%);min-width:auto}.brand-logo img{height:34px;max-width:140px}.header-action{margin-left:auto;height:40px;min-width:80px;padding:0 14px;font-size:14px}.lead-shell,.page-intro,.layout-a,.layout-b{grid-template-columns:1fr}.lead-links{grid-template-columns:repeat(2,1fr)}.index-grid{grid-template-columns:repeat(2,1fr)}.three-info{grid-template-columns:1fr 1fr}.three-info .feature-panel:first-child{grid-column:1/-1}.carousel{height:260px}.steps{grid-template-columns:1fr 1fr}.related-grid{grid-template-columns:repeat(2,1fr)}.sticky-list{position:static}.footer-shell{grid-template-columns:1fr 1fr}.footer-intro{grid-column:1/-1}.footer-rule{padding-bottom:88px}.mobile-bottom{position:fixed;left:10px;right:10px;bottom:10px;z-index:9000;display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:0 12px 28px rgba(8,119,201,.15);overflow:hidden}.mobile-bottom a{text-align:center;text-decoration:none;color:var(--nav);font-weight:700;padding:12px 4px;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(-105%);transition:transform .2s ease;box-shadow:18px 0 40px rgba(8,119,201,.16)}.mobile-drawer.is-open{transform:translateX(0)}.drawer-mask{display:none;position:fixed;inset:0;background:rgba(8,42,70,.42);z-index:11000;opacity:0;pointer-events:none;transition:opacity .18s ease}.drawer-mask.is-visible{display:block;opacity:1;pointer-events:auto}}
@media(max-width:640px){.lead-copy,.intro-copy,.content-card,.feature-panel{padding:22px}.lead-copy h1,.intro-copy h1{font-size:29px}.lead-links,.index-grid,.three-info,.steps,.related-grid,.service-map,.footer-shell{grid-template-columns:1fr}.three-info .feature-panel:first-child{grid-column:auto}.carousel{height:180px}.section{padding:32px 0}.section-head{align-items:start;display:block}.section-head p{margin-top:5px}.page-intro{padding-top:14px}.media-feature{height:210px}.footer-intro{grid-column:auto}.footer-rule{display:block}.footer-rule span,.footer-rule strong{display:block;margin:4px 0}}
@media(min-width:981px) and (max-width:1180px){.carousel{height:300px}}