:root{--bg:#F3F6F9;--surface:#fff;--soft:#E8EEF5;--ink:#0B1220;--text:#1E293B;--muted:#475569;--faint:#64748B;--blue:#2563EB;--lightblue:#60A5FA;--deepblue:#1D4ED8;--lime:#65A30D;--slate:#334155;--border:rgba(37,99,235,.16);--shadow:0 14px 36px rgba(11,18,32,.08);--radius:18px;--header-h:136px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;line-height:1.72;overflow-x:hidden}img{display:block;max-width:100%;height:auto}a{color:inherit;text-decoration:none}button,input{font:inherit}.wrap{width:min(1180px,calc(100% - 32px));margin:0 auto}.site-header{position:fixed;inset:0 0 auto;z-index:50}.status-bar{height:32px;background:var(--slate);color:#fff}.status-inner,.command-inner,.tabs-inner{height:100%;display:flex;align-items:center}.status-inner{justify-content:space-between;font-size:13px}.status-brand{font-weight:700;letter-spacing:.03em}.text-button{border:0;background:transparent;color:#fff;min-width:44px;min-height:32px;cursor:pointer}.command-bar{height:60px;background:#fff;border-bottom:1px solid var(--border)}.command-inner{display:grid;grid-template-columns:120px 1fr 120px;gap:12px}.square-button{width:44px;height:44px;border:1px solid var(--border);border-radius:12px;background:#fff;display:grid;place-content:center;gap:4px;cursor:pointer}.square-button span{width:18px;height:2px;background:var(--slate);display:block}.brand-lockup{justify-self:center;display:flex;align-items:center;min-height:44px;color:var(--ink);font-size:22px}.brand-mark{max-height:32px;width:auto;object-fit:contain}.app-link{justify-self:end;min-height:44px;display:inline-flex;align-items:center;padding:0 18px;border-radius:999px;background:linear-gradient(135deg,#60A5FA 0%,#2563EB 52%,#1D4ED8 100%);color:#fff;font-weight:700}.tab-bar{height:44px;background:#fff;border-bottom:1px solid var(--border)}.tabs-inner{justify-content:center;gap:34px}.tabs-inner a{height:44px;display:inline-flex;align-items:center;position:relative;color:var(--muted);font-size:15px}.tabs-inner a.is-current{color:var(--blue);font-weight:700}.tabs-inner a.is-current:after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;background:var(--blue);border-radius:4px 4px 0 0}.site-main{padding-top:calc(var(--header-h) + 28px);min-height:72vh}.hero-card,.section-card,.content-card,.notice-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.hero-card{padding:28px}.eyebrow{font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--blue);font-weight:800}.hero-card h1,.page-hero h1{margin:.25rem 0 .7rem;color:var(--ink);font-size:clamp(28px,4vw,32px);line-height:1.28}.lead{font-size:16px;color:var(--muted);max-width:850px}.button-row{display:flex;flex-wrap:wrap;gap:12px;margin:22px 0 24px}.btn{min-height:44px;padding:0 20px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;font-weight:700}.btn-primary{background:linear-gradient(135deg,#60A5FA 0%,#2563EB 52%,#1D4ED8 100%);color:#fff}.btn-secondary{background:#fff;color:var(--blue);border:1px solid rgba(37,99,235,.35)}a:hover{color:var(--deepblue)}.btn-primary:hover,.app-link:hover{color:#fff;filter:brightness(.97)}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(37,99,235,.35);outline-offset:3px}.media-slot{width:100%;aspect-ratio:16/6;max-height:340px;border-radius:16px;background:linear-gradient(135deg,#E8EEF5,#F8FAFC);border:1px dashed rgba(37,99,235,.22);display:grid;place-items:center;color:var(--faint);overflow:hidden}.hero-media{width:100%;max-height:340px;object-fit:cover;border-radius:16px}.section{padding:34px 0}.section-title{display:flex;justify-content:space-between;align-items:end;gap:18px;margin-bottom:18px}.section-title h2{margin:0;color:var(--ink);font-size:24px}.section-title p{margin:0;color:var(--faint);max-width:680px}.theme-list{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.theme-item{padding:18px;border-top:1px solid var(--border);background:#fff;border-radius:14px}.theme-item strong{display:flex;align-items:center;gap:8px;color:var(--ink)}.theme-item strong:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--blue);flex:none}.theme-item p{margin:7px 0 12px;color:var(--muted);font-size:14px}.text-link{color:var(--blue);font-weight:700}.numbered-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.numbered-item{padding:20px;background:#fff;border:1px solid var(--border);border-radius:16px}.big-num{font-size:34px;line-height:1;color:var(--blue);font-weight:900;letter-spacing:-.04em}.numbered-item h3{margin:12px 0 8px;color:var(--ink)}.numbered-item p{margin:0;color:var(--muted)}.cards-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.content-card{padding:18px}.content-card h3{margin:14px 0 6px;color:var(--ink)}.content-card p{margin:0 0 10px;color:var(--muted)}.stack{display:grid;gap:16px}.split-card{display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,.85fr);gap:24px;align-items:center;padding:22px}.split-card.reverse{grid-template-columns:minmax(280px,.85fr) minmax(0,1fr)}.split-card h2{color:var(--ink);margin:0 0 8px}.quad-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.quad-grid article{padding:20px;background:#fff;border:1px solid var(--border);border-radius:16px}.file-list{background:#fff;border:1px solid var(--border);border-radius:18px;overflow:hidden}.file-row{display:grid;grid-template-columns:44px 1fr auto;gap:14px;align-items:start;padding:18px;border-bottom:1px solid var(--border)}.file-row:last-child{border-bottom:0}.file-row .file-icon{width:34px;height:34px;border-radius:10px;background:var(--soft);display:grid;place-items:center;color:var(--blue);font-weight:900}.file-row h3{margin:0;color:var(--ink);font-size:17px}.file-row p{margin:4px 0 0;color:var(--muted);font-size:14px}.meter-list{display:grid;gap:10px}.meter-row{display:grid;grid-template-columns:88px 1fr;gap:18px;padding:20px;background:#fff;border:1px solid var(--border);border-radius:16px}.timeline{position:relative;margin-left:10px;padding-left:28px}.timeline:before{content:"";position:absolute;left:7px;top:10px;bottom:10px;width:2px;background:rgba(37,99,235,.25)}.timeline-item{position:relative;background:#fff;border:1px solid var(--border);border-radius:16px;padding:18px;margin-bottom:14px}.timeline-item:before{content:"";position:absolute;left:-29px;top:23px;width:14px;height:14px;border-radius:50%;background:var(--blue);border:3px solid var(--bg)}.status-chip{display:inline-flex;padding:4px 9px;border-radius:999px;background:var(--soft);color:var(--slate);font-size:12px;font-weight:700}.page-hero{padding:4px 0 20px}.page-hero .lead{max-width:900px}.feature-media{margin:18px 0 24px}.article-body{display:grid;gap:16px}.article-body article,.article-body section,.article-body aside{background:#fff;border:1px solid var(--border);border-radius:16px;padding:22px}.article-body h2,.article-body h3{color:var(--ink);margin:0 0 10px;line-height:1.4}.article-body p{margin:.55em 0;color:var(--text)}.article-body ul,.article-body ol{padding-left:1.3em;color:var(--text)}.article-body li{margin:.45em 0}.index-strip{display:flex;flex-wrap:wrap;gap:10px}.index-strip a{min-height:44px;display:inline-flex;align-items:center;padding:0 15px;border-radius:999px;background:#fff;border:1px solid var(--border);color:var(--blue);font-weight:700}.long-strip{display:grid;gap:10px}.long-strip article{display:grid;grid-template-columns:76px 1fr auto;gap:16px;align-items:start;padding:18px;background:#fff;border:1px solid var(--border);border-radius:14px}.faq-list{display:grid;gap:12px}.faq-item{background:#fff;border:1px solid var(--border);border-radius:16px;padding:20px}.faq-item h2{font-size:18px;margin:0 0 8px;color:var(--ink)}.faq-item p{margin:0;color:var(--text)}.legal-box{border-left:4px solid var(--blue)!important}.site-footer{background:#0B1220;color:#D6E4FF;margin-top:54px;padding:34px 0 88px}.footer-brand-row{display:flex;align-items:center;gap:14px;padding-bottom:22px;border-bottom:1px solid rgba(214,228,255,.12)}.footer-logo{display:flex;align-items:center;min-height:44px}.footer-brand-row>div{display:grid}.footer-brand-row span{font-size:12px;color:#9DB7E5}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:24px 0}.footer-grid h2{font-size:14px;color:#fff}.footer-grid a{display:block;color:#D6E4FF;margin:8px 0;font-size:14px}.footer-note,.copyright{color:#9DB7E5;font-size:13px}.copyright{margin-top:8px}.overlay{position:fixed;inset:0;background:rgba(11,18,32,.45);z-index:70;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.mosaic-menu{position:fixed;inset:0;z-index:80;background:var(--bg);overflow:auto;transform:translateY(-20px);opacity:0;visibility:hidden;pointer-events:none;transition:.22s}.mosaic-menu.is-open{transform:none;opacity:1;visibility:visible;pointer-events:auto}.mosaic-head{height:76px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border)}.mosaic-brand{display:flex;align-items:center;gap:12px}.close-button{min-width:68px;min-height:44px;border:1px solid var(--border);background:#fff;color:var(--slate);border-radius:999px;cursor:pointer}.mosaic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;padding-top:22px;padding-bottom:36px}.mosaic-group{background:#fff;border:1px solid var(--border);border-radius:18px;padding:18px}.mosaic-group h2{margin:0 0 12px;color:var(--ink);font-size:18px}.mosaic-group a{display:block;padding:12px 0;border-top:1px solid var(--border)}.mosaic-group a strong{display:block;color:var(--ink)}.mosaic-group a span{display:block;color:var(--muted);font-size:13px;margin-top:3px}.search-layer{position:fixed;z-index:90;left:0;right:0;top:92px;display:flex;justify-content:center;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.search-layer.is-open{opacity:1;visibility:visible;pointer-events:auto}.search-card{width:min(760px,calc(100% - 32px));background:#fff;border:1px solid var(--border);box-shadow:var(--shadow);border-radius:20px;padding:20px}.search-head{display:flex;align-items:center;justify-content:space-between}.search-shell{display:block;margin-top:14px}.search-shell input{width:100%;height:50px;border:1px solid rgba(37,99,235,.28);border-radius:14px;padding:0 16px;color:var(--muted);background:#F8FAFC}.search-card p{color:var(--faint);font-size:13px}.preset-links{display:flex;flex-wrap:wrap;gap:8px}.preset-links a{min-height:44px;display:inline-flex;align-items:center;padding:0 14px;border-radius:999px;background:var(--soft);color:var(--blue);font-weight:700}.layer-open{overflow:hidden}.mobile-bottom{display:none}.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.kicker{color:var(--lime);font-weight:800;font-size:13px}.quote-note{padding:18px;border-radius:14px;background:var(--soft);color:var(--slate)}.product-panel{display:grid;grid-template-columns:minmax(260px,.8fr) minmax(0,1.2fr);gap:24px;align-items:center;background:#fff;border:1px solid var(--border);border-radius:18px;padding:22px}.contact-options{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.contact-options article{background:#fff;border:1px solid var(--border);border-radius:16px;padding:20px}
@media (max-width:900px){.theme-list,.numbered-grid{grid-template-columns:repeat(2,1fr)}.cards-3{grid-template-columns:1fr}.split-card,.split-card.reverse,.product-panel{grid-template-columns:1fr}.mosaic-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:repeat(2,1fr)}.long-strip article{grid-template-columns:58px 1fr}.long-strip article>a{grid-column:2}.command-inner{grid-template-columns:90px 1fr 90px}.app-link{padding:0 12px;font-size:14px}}
@media (max-width:720px){:root{--header-h:92px}.tab-bar{display:none}.site-main{padding-top:calc(var(--header-h) + 20px);padding-bottom:58px}.status-bar{height:32px}.command-bar{height:60px}.wrap{width:min(100% - 32px,1180px)}.command-inner{grid-template-columns:64px 1fr 82px;gap:4px}.square-button{width:44px;height:44px}.brand-lockup{font-size:20px}.brand-mark{max-width:132px;max-height:30px}.app-link{padding:0 10px;font-size:13px}.hero-card{padding:20px}.theme-list,.numbered-grid,.quad-grid,.contact-options{grid-template-columns:1fr}.mosaic-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.mosaic-group{padding:14px}.mosaic-group a span{font-size:12px}.search-layer{inset:0;background:var(--bg);top:0;padding:16px;align-items:flex-start}.search-card{width:100%;min-height:100%;border:0;box-shadow:none;border-radius:0;padding-top:8px}.mobile-bottom{display:grid;grid-template-columns:repeat(5,1fr);position:fixed;left:0;right:0;bottom:0;z-index:60;min-height:50px;padding-bottom:env(safe-area-inset-bottom);background:#fff;border-top:1px solid var(--border)}.mobile-bottom a{min-height:50px;display:grid;place-items:center;color:var(--faint);font-size:13px}.mobile-bottom a.is-current{color:var(--blue);font-weight:800}.site-footer{padding-bottom:84px}.file-row{grid-template-columns:38px 1fr}.file-row>.text-link{grid-column:2}.meter-row{grid-template-columns:64px 1fr}.footer-grid{grid-template-columns:repeat(2,1fr)}.long-strip article{grid-template-columns:48px 1fr}.mosaic-head{height:68px}}
@media (max-width:420px){.wrap{width:calc(100% - 32px)}.mosaic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.mosaic-group h2{font-size:16px}.mosaic-group a{padding:10px 0}.footer-grid{gap:16px}.status-inner{font-size:12px}}