:root{
--bg:#FFFFFF;--deep-bg:#F5F7FA;--panel:#FFFFFF;--muted-bg:#EEF1F6;
--title:#0A1628;--text:#1E2A3A;--muted:#4A5568;--soft:#718096;
--blue:#0033A0;--bright:#0052CC;--deep:#002066;--border:rgba(0,51,160,.14);
--shadow:0 12px 36px rgba(0,33,102,.08);--header-h:118px
}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;color:var(--text);background:var(--bg);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.75;overflow-x:hidden}
body.locked{overflow:hidden}a{color:inherit;text-decoration:none}a,button{outline:none}
a:focus-visible,button:focus-visible{box-shadow:0 0 0 3px rgba(0,82,204,.24)}
img{max-width:100%;display:block}button{font:inherit}.shell{width:min(1220px,calc(100% - 32px));margin:0 auto}
.site-header{position:fixed;z-index:60;inset:0 0 auto;background:#fff}
.spine{height:18px;background:var(--deep);color:#fff;font-size:11px;line-height:18px}
.spine-inner{display:flex;align-items:center;justify-content:space-between}
.plain-button{border:0;background:transparent;color:inherit;cursor:pointer;padding:0 2px;min-height:18px}
.coverbar{height:60px;background:#fff;border-bottom:1px solid var(--border)}
.coverbar-inner{height:100%;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px}
.brand-lockup{justify-self:start;display:flex;align-items:center;min-height:44px}
.brand-logo{height:36px;width:auto;max-width:160px;object-fit:contain}
.brand-fallback{font-weight:900;font-size:25px;letter-spacing:-1px;color:var(--deep)}
.catalog-button,.app-link{min-height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;padding:0 16px;font-weight:700;cursor:pointer}
.catalog-button{border:1px solid var(--border);background:#fff;color:var(--deep)}
.app-link{justify-self:end;background:linear-gradient(135deg,#0052CC 0%,#0033A0 50%,#002066 100%);color:#fff}
.tabs{height:40px;background:var(--deep-bg);border-bottom:1px solid var(--border)}
.tab-row{height:100%;display:flex;align-items:center;gap:6px}
.tab-row a{height:28px;padding:0 12px;display:inline-flex;align-items:center;border-radius:8px;font-size:14px;color:var(--muted)}
.tab-row a:hover{color:var(--blue);background:#fff}.tab-row a.active{background:var(--blue);color:#fff;font-weight:700}
.site-main{padding-top:calc(var(--header-h) + 28px);min-height:65vh}
.overlay{position:fixed;inset:78px 0 0;background:rgba(10,22,40,.28);opacity:0;visibility:hidden;pointer-events:none;transition:.2s;z-index:45}
.overlay.show{opacity:1;visibility:visible;pointer-events:auto}
.catalog-panel,.search-panel{position:fixed;left:0;right:0;top:78px;z-index:55;visibility:hidden;opacity:0;pointer-events:none;transform:translateY(-10px);transition:opacity .18s ease,transform .18s ease,visibility .18s}
.menu-open .catalog-panel,.search-open .search-panel{visibility:visible;opacity:1;pointer-events:auto;transform:translateY(0)}
.catalog-shell{background:#fff;border:1px solid var(--border);border-top:0;box-shadow:var(--shadow);max-height:50vh;overflow:auto;border-radius:0 0 16px 16px}
.catalog-head{display:flex;align-items:center;justify-content:space-between;padding:15px 18px;border-bottom:1px solid var(--border);position:sticky;top:0;background:#fff;z-index:2}
.catalog-brand{display:flex;align-items:center;gap:10px;color:var(--title)}.catalog-logo{height:30px;width:auto;max-width:120px;object-fit:contain}
.icon-close{min-height:44px;padding:0 13px;border:1px solid var(--border);background:#fff;border-radius:10px;color:var(--blue);cursor:pointer}
.catalog-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;padding:8px 18px 20px}.catalog-group{padding:12px 14px}
.catalog-group h2{font-size:13px;color:var(--blue);margin:0 0 8px;letter-spacing:.12em}.catalog-links{display:grid;gap:4px}
.catalog-links a{padding:10px;border-radius:10px;border:1px solid transparent}.catalog-links a:hover{border-color:var(--border);background:var(--deep-bg)}
.catalog-links strong{display:block;color:var(--title);font-size:15px}.catalog-links span{display:block;color:var(--soft);font-size:12px;line-height:1.55;margin-top:2px}
.search-card{background:#fff;border:1px solid var(--border);border-top:0;box-shadow:var(--shadow);padding:20px;border-radius:0 0 16px 16px}
.search-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.search-head h2{font-size:22px;line-height:1.3;margin:4px 0 12px;color:var(--title)}
.eyebrow{font-size:12px;font-weight:800;color:var(--blue);letter-spacing:.12em}.search-look{display:flex;align-items:center;gap:12px;min-height:52px;border:1px solid var(--border);background:var(--deep-bg);border-radius:12px;padding:0 16px;color:var(--muted)}
.preset-links{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}.preset-links a{min-height:44px;padding:0 15px;border:1px solid var(--border);border-radius:10px;display:inline-flex;align-items:center;color:var(--blue);background:#fff}
.page-hero{padding:28px 0 22px}.page-hero .eyebrow{display:inline-block;margin-bottom:7px}.page-hero h1{margin:0;color:var(--title);font-size:clamp(28px,4vw,32px);line-height:1.25;letter-spacing:-.02em}
.page-hero p{max-width:800px;color:var(--muted);margin:12px 0 0}
.section{padding:38px 0}.section.alt{background:var(--deep-bg)}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:18px}
.section-head h2{margin:0;color:var(--title);font-size:24px;line-height:1.3}.section-head p{margin:4px 0 0;color:var(--soft);max-width:720px}
.text-link{color:var(--blue);font-weight:700}.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.card-grid.four{grid-template-columns:repeat(4,1fr)}.card-grid.two{grid-template-columns:repeat(2,1fr)}
.card{background:#fff;border:1px solid var(--border);border-radius:14px;padding:20px;box-shadow:0 8px 24px rgba(0,33,102,.04)}
.card h2,.card h3{color:var(--title);margin:0 0 8px;line-height:1.35}.card h3{font-size:18px}.card p{margin:0;color:var(--muted)}
.card .meta{display:block;color:var(--blue);font-size:12px;font-weight:800;letter-spacing:.08em;margin-bottom:8px}
.media-slot{background:var(--muted-bg);border:1px solid var(--border);border-radius:14px;min-height:180px;display:flex;align-items:center;justify-content:center;overflow:hidden}
.media-slot.hero-media{max-height:300px;aspect-ratio:16/9}.media-slot.column-media{min-height:180px;height:210px}.media-slot.app-media{min-height:320px;max-height:420px}.media-slot.icon-media{width:72px;height:72px;min-height:72px;border-radius:16px}
.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}.media-fallback{padding:28px;text-align:center;color:var(--deep);font-weight:800}
.hero-copy{padding:20px 0 0}.hero-copy h1{font-size:clamp(29px,5vw,32px);line-height:1.25;color:var(--title);margin:4px 0 10px}.hero-copy .brand-kicker{font-weight:900;color:var(--blue);letter-spacing:.08em}
.hero-copy p{max-width:860px;color:var(--muted);margin:0}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.btn{min-height:44px;padding:0 17px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;font-weight:800;border:1px solid var(--blue)}
.btn.primary{background:linear-gradient(135deg,#0052CC 0%,#0033A0 50%,#002066 100%);color:#fff}.btn.secondary{background:#fff;color:var(--blue)}
.quick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.quick-card{border:1px solid var(--border);border-radius:12px;padding:16px;background:#fff;display:grid;grid-template-columns:10px 1fr;gap:12px}
.quick-chip{width:10px;border-radius:4px;background:var(--bright)}.quick-card:nth-child(even) .quick-chip{background:var(--deep)}
.quick-card h3{font-size:17px;margin:0 0 5px;color:var(--title)}.quick-card p{font-size:14px;margin:0 0 8px;color:var(--muted)}
.feature-row{display:grid;grid-template-columns:minmax(260px,.9fr) minmax(0,1.3fr);gap:24px;align-items:center}
.number-list{display:grid;gap:10px;margin-top:14px}.number-item{display:grid;grid-template-columns:48px 1fr;gap:12px;align-items:start;padding:12px;border:1px solid var(--border);border-radius:12px;background:#fff}
.number-item strong.num{font-size:22px;color:var(--blue);line-height:1}.number-item h3{font-size:16px;margin:0 0 4px;color:var(--title)}.number-item p{margin:0;color:var(--muted);font-size:14px}
.big-number-list{display:grid;gap:12px}.big-number{display:grid;grid-template-columns:82px 1fr;gap:16px;align-items:center;padding:18px;border:1px solid var(--border);border-radius:14px;background:#fff}
.big-number .num{font-size:42px;line-height:1;color:var(--blue);font-weight:900;letter-spacing:-.04em}.big-number h3{margin:0 0 5px;color:var(--title)}.big-number p{margin:0;color:var(--muted)}
.status-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.status-card{border-top:4px solid var(--bright);background:#fff;border-radius:12px;padding:18px;border-left:1px solid var(--border);border-right:1px solid var(--border);border-bottom:1px solid var(--border)}
.status-card:nth-child(even){border-top-color:var(--deep)}.status-card h3{margin:0 0 7px;color:var(--title)}.status-card p{margin:0;color:var(--muted);font-size:14px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:24px}.prose{background:#fff;border:1px solid var(--border);border-radius:14px;padding:24px}
.prose h2{font-size:22px;color:var(--title);margin:28px 0 10px}.prose h2:first-child{margin-top:0}.prose p{color:var(--text);margin:0 0 14px}.prose ul{padding-left:1.2em;color:var(--text)}.prose li{margin:.5em 0}
.side-index{position:sticky;top:146px;align-self:start;border:1px solid var(--border);border-radius:14px;padding:16px;background:var(--deep-bg)}
.side-index h2{font-size:15px;color:var(--title);margin:0 0 10px}.side-index a{display:block;padding:8px 0;color:var(--blue);border-bottom:1px solid var(--border);font-size:14px}.side-index a:last-child{border-bottom:0}
.quote{border-left:4px solid var(--blue);padding:12px 16px;background:var(--deep-bg);border-radius:0 12px 12px 0;color:var(--text)}.quote strong{display:block;color:var(--blue);margin-bottom:6px}
.steps{counter-reset:step;display:grid;gap:14px}.step{counter-increment:step;display:grid;grid-template-columns:52px 1fr;gap:14px;padding:18px;border:1px solid var(--border);border-radius:14px;background:#fff}
.step:before{content:counter(step,decimal-leading-zero);font-size:26px;font-weight:900;color:var(--blue);line-height:1.2}.step h3{margin:0 0 6px;color:var(--title)}.step p{margin:0;color:var(--muted)}
.faq{display:grid;gap:12px}.faq article{padding:20px;border:1px solid var(--border);border-radius:14px;background:#fff}.faq h2{font-size:18px;margin:0 0 8px;color:var(--title)}.faq p{margin:0;color:var(--text)}
.site-footer{margin-top:56px;background:var(--title);color:#A0AEC0;padding:38px 0 24px}.footer-brand{display:flex;align-items:center;gap:14px;padding-bottom:22px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer-logo{height:32px;width:auto;max-width:130px;object-fit:contain;filter:brightness(0) invert(1)}.footer-brand strong{display:block;color:#fff;font-size:20px}.footer-brand span{font-size:12px}
.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:24px 0}.footer-grid h2{font-size:13px;color:#fff;margin:0 0 8px}.footer-grid a{display:block;line-height:2;color:#A0AEC0;font-size:14px}.footer-grid a:hover{color:#fff}
.footer-note{border-top:1px solid rgba(255,255,255,.12);padding-top:18px;margin:0;max-width:900px;font-size:13px}.copyright{margin:8px 0 0;font-size:12px}.mobile-nav{display:none}
@media(max-width:900px){
:root{--header-h:78px}.tabs{display:none}.site-main{padding-top:calc(var(--header-h) + 20px)}
.catalog-grid{grid-template-columns:repeat(2,1fr)}.catalog-shell{max-height:66vh;width:100%}.card-grid.four{grid-template-columns:repeat(2,1fr)}.status-grid{grid-template-columns:repeat(2,1fr)}
.article-layout{grid-template-columns:1fr}.side-index{position:static}
}
@media(max-width:680px){
body{padding-bottom:calc(50px + env(safe-area-inset-bottom))}.shell{width:calc(100% - 32px)}
.coverbar-inner{grid-template-columns:minmax(76px,1fr) auto minmax(76px,1fr);gap:8px}.brand-logo{height:30px;max-width:104px}.brand-fallback{font-size:22px}
.catalog-button,.app-link{min-height:44px;padding:0 10px;font-size:13px}.catalog-panel,.search-panel{top:78px}.overlay{inset:78px 0 0}
.catalog-shell,.search-card{width:100%;border-radius:0 0 14px 14px}.search-card{background:var(--deep-bg)}.catalog-grid{grid-template-columns:1fr;padding:8px 14px 16px}.catalog-group{padding:8px 4px}
.quick-grid,.card-grid,.card-grid.two,.card-grid.four,.status-grid{grid-template-columns:1fr}.feature-row{grid-template-columns:1fr}.media-slot.column-media{height:200px}
.section{padding:30px 0}.section-head{align-items:flex-start;flex-direction:column}.article-layout{display:block}.prose{padding:20px}
.big-number{grid-template-columns:64px 1fr}.big-number .num{font-size:34px}.footer-grid{grid-template-columns:repeat(2,1fr)}
.mobile-nav{position:fixed;left:0;right:0;bottom:0;z-index:40;height:calc(50px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:#fff;border-top:1px solid var(--border);display:grid;grid-template-columns:repeat(5,1fr)}
.mobile-nav a{display:flex;align-items:center;justify-content:center;min-height:50px;color:var(--muted);font-size:13px}.mobile-nav a.active{background:var(--blue);color:#fff;font-weight:800}
}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

.mt-12{margin-top:12px}.mt-16{margin-top:16px}