:root{
  --ink:#07111f;--ink2:#0d1a2d;--card:#12243b;--card2:#17304a;--line:rgba(154,224,214,.18);
  --text:#f7fbff;--muted:#b8c7d6;--mint:#78f0cf;--coral:#ff9a72;--sky:#83c9ff;--paper:#eaf4f7;
  --shadow:0 18px 48px rgba(0,0,0,.28);
}
*{box-sizing:border-box;max-width:100%}
html{background:var(--ink);scroll-behavior:smooth}
body{margin:0;background:linear-gradient(180deg,#06101c 0%,#091625 42%,#07111f 100%);color:var(--text);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.78;overflow-x:hidden}
body.nav-open{overflow:hidden}
a{color:inherit;text-decoration:none} a:hover{text-decoration:none} img{display:block;max-width:100%}
.wrap{width:min(1180px,calc(100% - 36px));margin:0 auto}
.top-note{background:#050c15;border-bottom:1px solid rgba(255,255,255,.06);font-size:13px;color:#9db0c3}
.top-note-inner{height:34px;display:flex;align-items:center;gap:20px}.top-note-inner span{margin-right:auto;color:#d8e7ef}.top-note a:hover{color:var(--mint)}
.masthead{position:sticky;top:0;z-index:9000;background:rgba(7,17,31,.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.masthead-inner{min-height:74px;display:grid;grid-template-columns:190px 1fr 92px;align-items:center;gap:22px}
.brand-mark{display:flex;align-items:center}.brand-mark img{height:42px;width:auto;object-fit:contain}.brand-mark strong{color:var(--mint);font-size:22px;letter-spacing:.08em}
.primary-nav{display:flex;align-items:center;justify-content:center;gap:8px}.primary-nav a{padding:9px 14px;border-radius:999px;color:#d8e4ee;font-weight:700}.primary-nav a:hover,.primary-nav a.active{background:#13283d;color:var(--mint)}
.account-link{justify-self:end;display:inline-flex;align-items:center;justify-content:center;min-width:86px;height:40px;border-radius:12px;background:linear-gradient(135deg,var(--mint),var(--sky));color:#04131c;font-weight:900;box-shadow:0 10px 28px rgba(120,240,207,.16)}
.topic-rail{background:#0b1828;border-bottom:1px solid rgba(255,255,255,.05)}.topic-rail-inner{display:flex;gap:4px;overflow-x:auto;scrollbar-width:thin}.topic-rail a{flex:0 0 auto;padding:11px 13px;color:#aebfd0;font-size:14px}.topic-rail a:hover{color:var(--coral)}
.menu-toggle{display:none;border:0;background:transparent;width:42px;height:42px;padding:8px;cursor:pointer}.menu-toggle span{display:block;height:2px;background:#fff;margin:5px 0;border-radius:4px}
.mobile-panel,.panel-shade{display:none}
.page-shell{min-height:65vh}
.page-hero{padding:72px 0 38px}.hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(360px,.95fr);gap:42px;align-items:center}
.kicker{display:inline-flex;align-items:center;gap:8px;color:var(--mint);font-size:13px;font-weight:900;letter-spacing:.12em;text-transform:uppercase;margin-bottom:14px}.kicker:before{content:"";width:28px;height:2px;background:var(--coral)}
h1,h2,h3{margin-top:0;line-height:1.18}h1{font-size:clamp(34px,5.1vw,58px);letter-spacing:-.025em;margin-bottom:20px}h2{font-size:clamp(26px,3vw,36px);margin-bottom:16px}h3{font-size:20px;margin-bottom:10px}
.lede{font-size:18px;color:#c9d7e4;max-width:760px}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}.solid-action,.ghost-action{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 18px;border-radius:12px;font-weight:800}.solid-action{background:linear-gradient(135deg,var(--coral),#ffbc7c);color:#1a0b04}.ghost-action{border:1px solid var(--line);background:#0f2135;color:#eaf7fa}
.visual-frame{position:relative;width:100%;aspect-ratio:16/9;border-radius:22px;overflow:hidden;background:#0d1a2d;border:1px solid var(--line);box-shadow:var(--shadow)}.visual-frame img{width:100%;height:100%;object-fit:contain;object-position:center}.visual-frame.tall{aspect-ratio:4/3}.visual-frame.slim{aspect-ratio:21/9}.visual-fallback{width:100%;height:100%;background:radial-gradient(circle at 30% 30%,#173c53,#0d1a2d 60%,#07111f);position:relative}.visual-fallback:after{content:"";position:absolute;inset:18%;border:1px dashed rgba(120,240,207,.2);border-radius:18px}
.section{padding:54px 0}.section.tight{padding:34px 0}.section.alt{background:rgba(15,33,53,.68);border-top:1px solid rgba(255,255,255,.04);border-bottom:1px solid rgba(255,255,255,.04)}
.section-head{display:grid;grid-template-columns:minmax(0,.9fr) minmax(280px,1.1fr);gap:28px;align-items:end;margin-bottom:28px}.section-head p{margin:0;color:var(--muted)}
.stat-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:18px;overflow:hidden}.stat-strip a{background:#0e1e31;padding:20px}.stat-strip strong{display:block;color:var(--mint);font-size:17px}.stat-strip span{display:block;color:#aebfd0;font-size:13px;margin-top:6px}
.editorial-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:18px}.story-card{padding:24px;border-radius:18px;background:linear-gradient(180deg,#12243b,#0f1f33);border:1px solid var(--line);min-height:220px}.story-card.featured{grid-row:span 2;min-height:458px}.story-card .num{color:var(--coral);font-weight:900;font-size:13px;letter-spacing:.1em}.story-card p{color:var(--muted)}.text-link{display:inline-flex;margin-top:8px;color:var(--mint);font-weight:800}
.duo{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:34px;align-items:center}.duo.reverse{grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr)}.duo.reverse .duo-media{order:2}
.reading-card{padding:32px;border-radius:20px;background:#0f2034;border:1px solid var(--line)}.reading-card p{color:#d4dfe9}.reading-card ul{padding-left:1.15em;color:#d4dfe9}.reading-card li{margin:8px 0}
.pill-list{display:flex;flex-wrap:wrap;gap:9px;margin-top:20px}.pill-list a{padding:8px 12px;border-radius:999px;background:#162d45;border:1px solid var(--line);color:#dffcf5;font-size:14px}
.route-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.route-item{padding:22px;border-radius:18px;background:#102237;border:1px solid var(--line)}.route-item b{display:block;color:var(--coral);font-size:12px;letter-spacing:.12em;margin-bottom:8px}.route-item p{color:var(--muted);margin:0 0 12px}
.timeline{display:grid;gap:0;border-left:1px solid var(--line);margin-left:10px}.timeline-item{position:relative;padding:0 0 28px 30px}.timeline-item:before{content:"";position:absolute;left:-6px;top:6px;width:11px;height:11px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 5px rgba(120,240,207,.08)}.timeline-item p{color:var(--muted)}
.check-band{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.check-band div{padding:18px;border-radius:15px;background:#13283e;border:1px solid var(--line)}.check-band strong{color:var(--mint);display:block;margin-bottom:6px}.check-band span{color:var(--muted);font-size:14px}
.breadcrumbs{padding:24px 0 0;color:#8297a9;font-size:13px}.breadcrumbs a{color:#b9c9d5}.breadcrumbs span{margin:0 7px}
.page-intro{padding:42px 0 24px}.page-intro h1{font-size:clamp(32px,4.5vw,48px);max-width:900px}.page-intro .lede{max-width:860px}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:30px;align-items:start}.article-main{display:grid;gap:22px}.article-block{padding:28px;border-radius:20px;background:#0f2034;border:1px solid var(--line)}.article-block p{color:#d2dee8}.article-block h2{font-size:27px}.article-block h3{color:var(--mint)}
.side-index{position:sticky;top:132px;padding:22px;border-radius:18px;background:#0b1929;border:1px solid var(--line)}.side-index strong{color:var(--coral);display:block;margin-bottom:12px}.side-index a{display:block;padding:9px 0;border-bottom:1px solid rgba(255,255,255,.05);color:#c3d2df;font-size:14px}.side-index a:last-child{border-bottom:0}
.note-box{padding:20px 22px;border-radius:16px;background:linear-gradient(135deg,rgba(120,240,207,.08),rgba(131,201,255,.07));border:1px solid var(--line);color:#dceaf1}
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.faq-box{padding:24px;border-radius:18px;background:#102137;border:1px solid var(--line)}.faq-box h2{font-size:20px;color:var(--mint)}.faq-box p{color:var(--muted)}
.site-footer{margin-top:52px;background:#050c15;border-top:1px solid rgba(255,255,255,.07)}.footer-top{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:28px;padding:46px 0}.footer-brand p{color:#95a9ba;max-width:420px;font-size:14px}.footer-top h3{font-size:15px;color:#dffbf4}.footer-top>div>a{display:block;color:#91a6b8;font-size:14px;padding:5px 0}.footer-top>div>a:hover{color:var(--mint)}.footer-bottom{padding:18px 0 28px;border-top:1px solid rgba(255,255,255,.06);font-size:13px;color:#8196a8}
.mobile-tabs{display:none}
@media(max-width:980px){
 .top-note,.primary-nav,.topic-rail{display:none}.masthead-inner{min-height:66px;grid-template-columns:48px 1fr 86px;gap:8px}.menu-toggle{display:block}.brand-mark{justify-content:center}.brand-mark img{height:36px}.account-link{min-width:82px;height:38px;font-size:14px}.hero-grid,.duo,.duo.reverse,.section-head,.article-grid{grid-template-columns:1fr}.duo.reverse .duo-media{order:0}.side-index{position:static}.editorial-grid{grid-template-columns:1fr 1fr}.story-card.featured{grid-row:auto;grid-column:1/-1;min-height:auto}.stat-strip{grid-template-columns:repeat(2,1fr)}.check-band{grid-template-columns:repeat(2,1fr)}
 .mobile-panel{display:block;position:fixed;inset:0 auto 0 0;width:min(88vw,360px);background:#081524;z-index:12000;transform:translateX(-105%);transition:transform .22s ease;overflow-y:auto;padding:18px}.mobile-panel.open{transform:translateX(0)}.panel-shade{display:none;position:fixed;inset:0;background:rgba(0,0,0,.58);z-index:11000;opacity:0;pointer-events:none}.panel-shade.show{display:block;opacity:1;pointer-events:auto}.mobile-panel-head{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);padding-bottom:14px}.mobile-panel-head .brand-mark{justify-content:flex-start}.menu-close{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:#102137;color:#fff;font-size:22px}.mobile-kicker{color:#89a0b4;font-size:13px}.mobile-nav-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.mobile-nav-grid strong{display:block;color:var(--mint);margin-bottom:7px}.mobile-nav-grid a{display:block;color:#d2dee8;padding:7px 0;font-size:14px}.mobile-login{display:flex;align-items:center;justify-content:center;height:44px;background:linear-gradient(135deg,var(--coral),#ffc17d);color:#241006;font-weight:900;border-radius:12px;margin-top:20px}
 body{padding-bottom:62px}.mobile-tabs{position:fixed;left:0;right:0;bottom:0;height:58px;z-index:10000;display:grid;grid-template-columns:repeat(4,1fr);background:#06111e;border-top:1px solid var(--line)}.mobile-tabs a{display:grid;place-items:center;color:#c9d6df;font-size:13px}
 .footer-top{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}
}
@media(max-width:700px){
 .wrap{width:min(100% - 24px,1180px)}.page-hero{padding:48px 0 26px}.section{padding:38px 0}.section.tight{padding:28px 0}.hero-grid{gap:28px}.hero-actions{gap:9px}.solid-action,.ghost-action{min-height:42px;padding:0 14px}.editorial-grid,.route-grid,.faq-grid{grid-template-columns:1fr}.story-card.featured{grid-column:auto}.stat-strip{grid-template-columns:1fr 1fr}.check-band{grid-template-columns:1fr}.reading-card,.article-block{padding:22px}.footer-top{grid-template-columns:1fr}.footer-brand{grid-column:auto}.mobile-nav-grid{grid-template-columns:1fr 1fr}.visual-frame{border-radius:16px}
}
@media(max-width:390px){.masthead-inner{grid-template-columns:44px minmax(0,1fr) 76px}.account-link{min-width:74px}.brand-mark img{max-width:128px}.mobile-nav-grid{grid-template-columns:1fr}.stat-strip{grid-template-columns:1fr}}