:root{
  --bg:#0b1020;--panel:#121a31;--panel2:#18233f;--line:#273556;--text:#eef4ff;--muted:#aebbd6;
  --accent:#45e0d0;--accent2:#ff8f6b;--accent3:#7aa6ff;--deep:#070b16;--shadow:0 20px 48px rgba(0,0,0,.28);
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:linear-gradient(180deg,#090e1c 0%,#0b1020 28%,#0c1428 100%);color:var(--text);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.8;overflow-x:hidden}a{color:inherit}img{max-width:100%}button,input{font:inherit}
.site-header{position:sticky;top:0;z-index:9000;background:rgba(7,11,22,.9);backdrop-filter:blur(14px);border-bottom:1px solid rgba(122,166,255,.15)}
.header-shell{max-width:1180px;min-height:72px;margin:auto;padding:0 20px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:24px}.site-logo{display:flex;align-items:center;text-decoration:none;min-width:150px}.site-logo img{display:block;width:auto;height:40px;max-width:170px;object-fit:contain}.logo-text{font-size:22px;font-weight:900;letter-spacing:.04em;color:#fff}.nav-core{display:flex;align-items:center;justify-content:center;gap:4px;min-width:0}.nav-core a{padding:10px 12px;text-decoration:none;font-weight:700;color:#cbd7ef;white-space:nowrap;border-radius:10px}.nav-core a:hover,.nav-core a.active{background:#17223d;color:var(--accent)}
.login-btn{min-width:84px;height:40px;display:inline-flex;align-items:center;justify-content:center;border-radius:12px;text-decoration:none;font-weight:800;background:linear-gradient(135deg,var(--accent),var(--accent3));color:#08111f;box-shadow:0 10px 30px rgba(69,224,208,.18)}
.signal-bar{background:#0f172b;border-top:1px solid rgba(255,255,255,.04)}.signal-inner{max-width:1180px;margin:auto;display:flex;align-items:center;gap:8px;padding:8px 20px;overflow:auto;scrollbar-width:none}.signal-inner::-webkit-scrollbar{display:none}.signal-label{font-size:12px;font-weight:900;color:#08111f;background:var(--accent2);padding:4px 9px;border-radius:999px;white-space:nowrap}.signal-inner a{font-size:13px;text-decoration:none;color:#aebbd6;padding:4px 8px;white-space:nowrap}.signal-inner a:hover{color:#fff}
.site-main{min-height:70vh}.shell{max-width:1180px;margin:auto;padding-left:20px;padding-right:20px}.narrow{max-width:840px;margin-left:auto;margin-right:auto}.section{padding:64px 0}.section-tight{padding:42px 0}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--accent);font-size:13px;font-weight:900;letter-spacing:.08em;text-transform:uppercase}.eyebrow:before{content:"";width:26px;height:2px;background:var(--accent)}h1,h2,h3{line-height:1.25;margin-top:0}h1{font-size:clamp(32px,5vw,58px);letter-spacing:-.02em}h2{font-size:clamp(24px,3.2vw,36px)}h3{font-size:19px}p{color:#d9e3f6}.muted{color:var(--muted)}
.hero{padding:62px 0 38px}.hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(360px,.95fr);gap:44px;align-items:center}.hero-copy .lead{font-size:18px;color:#c8d6ef;max-width:720px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.btn-primary,.btn-ghost{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 18px;border-radius:12px;text-decoration:none;font-weight:800}.btn-primary{background:var(--accent);color:#07101b}.btn-ghost{border:1px solid var(--line);color:#dce8ff;background:#10192e}.hero-notes{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}.hero-notes span{font-size:13px;color:#aebbd6;background:#10182d;border:1px solid #233150;padding:6px 10px;border-radius:999px}
.media-box{position:relative;aspect-ratio:16/9;border-radius:22px;overflow:hidden;background:radial-gradient(circle at 30% 20%,#233969,#11182d 60%);border:1px solid #27385a;box-shadow:var(--shadow)}.media-box img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;object-position:center}.media-fallback{position:absolute;inset:0;display:grid;place-items:center;background:linear-gradient(135deg,#121a31,#1b2948);color:#7182a6;font-weight:800}.media-fallback span{border:1px dashed #405174;border-radius:12px;padding:10px 14px}.media-box.compact{border-radius:16px}.media-box.tall{aspect-ratio:4/3}
.stats-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:24px}.stat{background:#10192e;border:1px solid var(--line);border-radius:16px;padding:18px}.stat b{display:block;font-size:20px;color:#fff}.stat span{font-size:13px;color:var(--muted)}
.portal-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.portal-card{position:relative;min-height:210px;padding:24px;background:linear-gradient(145deg,#111a30,#162441);border:1px solid var(--line);border-radius:18px;text-decoration:none;overflow:hidden}.portal-card:after{content:"↗";position:absolute;right:18px;top:15px;color:#60759e;font-size:22px}.portal-card strong{display:block;font-size:21px;color:#fff;margin-bottom:10px}.portal-card p{font-size:14px;color:#aebbd6;margin:0}.portal-card .tag{display:inline-block;margin-top:24px;font-size:12px;color:var(--accent);font-weight:900}.portal-card:hover{transform:translateY(-3px);border-color:#3b587e}
.split-feature{display:grid;grid-template-columns:.92fr 1.08fr;gap:28px;align-items:stretch}.feature-copy{padding:30px;border-radius:20px;background:#111a31;border:1px solid var(--line)}.feature-copy ul{padding-left:18px;color:#cbd7ef}.feature-copy li+li{margin-top:8px}.feature-copy .text-link{display:inline-block;margin-top:8px;color:var(--accent);font-weight:800;text-decoration:none}
.track{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.track a{padding:18px;border:1px solid var(--line);background:#111a30;border-radius:15px;text-decoration:none}.track b{display:block;color:#fff}.track small{color:#94a5c5}.track a:hover b{color:var(--accent)}
.notice-band{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#0e172b}.notice-inner{max-width:1180px;margin:auto;padding:22px 20px;display:grid;grid-template-columns:150px 1fr;gap:20px;align-items:start}.notice-inner b{color:var(--accent2)}.notice-inner p{margin:0;color:#b7c4dd}
.page-head{padding:52px 0 28px;border-bottom:1px solid rgba(122,166,255,.12)}.breadcrumbs{font-size:13px;color:#8595b5;margin-bottom:18px}.breadcrumbs a{text-decoration:none;color:#b5c7e8}.page-head p{max-width:780px;font-size:18px;color:#b9c7df}.page-head-grid{display:grid;grid-template-columns:1fr 420px;gap:34px;align-items:center}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:36px;align-items:start}.article{min-width:0}.article section{padding:26px 0;border-bottom:1px solid rgba(122,166,255,.14)}.article section:first-child{padding-top:0}.article ul,.article ol{padding-left:22px;color:#d3dff2}.article li+li{margin-top:8px}.side-index{position:sticky;top:124px;padding:20px;border:1px solid var(--line);border-radius:18px;background:#10182c}.side-index b{display:block;margin-bottom:10px;color:#fff}.side-index a{display:block;padding:7px 0;color:#aebbd6;text-decoration:none;border-bottom:1px dashed #253452}.side-index a:last-child{border-bottom:0}.side-index a:hover{color:var(--accent)}
.card-row{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.info-card{padding:22px;border:1px solid var(--line);border-radius:16px;background:#111a30}.info-card b{display:block;color:#fff;font-size:17px;margin-bottom:8px}.info-card p{margin:0;font-size:14px;color:#aebbd6}.step-list{counter-reset:steps;display:grid;gap:14px}.step{position:relative;padding:20px 20px 20px 62px;border:1px solid var(--line);border-radius:16px;background:#111a30}.step:before{counter-increment:steps;content:counter(steps,decimal-leading-zero);position:absolute;left:18px;top:17px;color:var(--accent);font-weight:900;font-size:18px}.step b{display:block;color:#fff}.step p{margin:4px 0 0;color:#aebbd6}
.compare-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.compare-box{padding:24px;border-radius:18px;background:#111a30;border:1px solid var(--line)}.compare-box h3{color:var(--accent)}
.link-cloud{display:flex;flex-wrap:wrap;gap:10px}.link-cloud a{padding:8px 12px;border-radius:10px;border:1px solid var(--line);background:#111a30;color:#c7d4eb;text-decoration:none}.link-cloud a:hover{color:var(--accent)}
.faq-list details{border:1px solid var(--line);background:#111a30;border-radius:14px;padding:16px 18px}.faq-list details+details{margin-top:10px}.faq-list summary{cursor:pointer;font-weight:800;color:#fff}.faq-list p{margin-bottom:0;color:#aebbd6}
.site-footer{margin-top:40px;background:#070b16;border-top:1px solid #1e2941}.footer-grid{max-width:1180px;margin:auto;padding:48px 20px;display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:28px}.footer-logo{display:inline-flex;margin-bottom:10px}.footer-logo img{height:38px;width:auto;object-fit:contain}.footer-brand p{max-width:360px;color:#8f9db9;font-size:14px}.site-footer h3{font-size:14px;color:#fff}.site-footer section>a:not(.footer-logo){display:block;text-decoration:none;color:#98a9c7;font-size:14px;padding:4px 0}.site-footer section>a:hover{color:var(--accent)}.footer-bottom{max-width:1180px;margin:auto;padding:16px 20px 28px;border-top:1px solid #172138;color:#7787a5;font-size:12px;display:flex;justify-content:space-between;gap:18px}
.menu-trigger,.mobile-drawer,.drawer-mask,.mobile-bottom{display:none}
@media(max-width:980px){
  .header-shell{min-height:64px;grid-template-columns:44px 1fr auto;gap:12px}.nav-core,.signal-bar{display:none}.site-logo{justify-self:center;min-width:0}.site-logo img{height:34px;max-width:150px}.login-btn{min-width:72px;height:38px}.menu-trigger{display:flex;width:40px;height:40px;border:0;background:transparent;flex-direction:column;justify-content:center;gap:5px;padding:8px}.menu-trigger span{display:block;height:2px;background:#dce8ff;border-radius:2px}.hero-grid,.page-head-grid,.split-feature,.article-layout{grid-template-columns:1fr}.hero-grid{gap:26px}.page-head-grid .media-box{max-width:680px}.side-index{position:static}.portal-grid{grid-template-columns:repeat(2,1fr)}.track{grid-template-columns:repeat(3,1fr)}.card-row{grid-template-columns:1fr 1fr}.stats-strip{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}
  .mobile-drawer{display:block;position:fixed;inset:0 auto 0 0;width:min(86vw,340px);background:#0c1428;z-index:12000;transform:translateX(-105%);transition:transform .2s ease;box-shadow:18px 0 42px rgba(0,0,0,.46);overflow:auto;padding-bottom:30px}.mobile-drawer.is-open{transform:translateX(0)}.drawer-mask{display:none;position:fixed;inset:0;background:rgba(2,5,12,.68);z-index:11000;opacity:0;pointer-events:none}.drawer-mask.is-visible{display:block;opacity:1;pointer-events:auto}.drawer-open{overflow:hidden}.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px;border-bottom:1px solid #1d2a45}.drawer-logo img{height:34px;width:auto}.drawer-close{border:0;background:#18243f;color:#fff;width:38px;height:38px;border-radius:10px;font-size:26px;line-height:1}.drawer-group{padding:14px 18px}.drawer-group b{display:block;color:var(--accent);font-size:12px;margin-bottom:6px}.drawer-group a{display:block;padding:9px 0;text-decoration:none;color:#d6e1f4;border-bottom:1px solid #17213a}.mobile-bottom{display:grid;position:fixed;left:10px;right:10px;bottom:10px;z-index:8000;grid-template-columns:repeat(4,1fr);background:rgba(8,13,26,.94);backdrop-filter:blur(12px);border:1px solid #283758;border-radius:15px;overflow:hidden;box-shadow:0 12px 30px rgba(0,0,0,.35)}.mobile-bottom a{padding:10px 4px;text-align:center;font-size:12px;text-decoration:none;color:#c9d6ec}.site-footer{padding-bottom:76px}.notice-inner{grid-template-columns:1fr;gap:6px}
}
@media(max-width:640px){.shell{padding-left:16px;padding-right:16px}.section{padding:44px 0}.hero{padding:42px 0 24px}.hero-copy .lead,.page-head p{font-size:16px}.portal-grid,.card-row,.compare-grid{grid-template-columns:1fr}.track{grid-template-columns:1fr 1fr}.stats-strip{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:6px}.media-box{border-radius:16px}.login-btn{padding:0 12px}.site-logo .logo-text{font-size:18px}}