:root{--bg:#EEF5FB;--deep:#E3EEF7;--white:#fff;--sub:#D7E8F4;--title:#10263A;--text:#243848;--muted:#5A7388;--aux:#7E93A6;--brand:#3B9FE0;--bright:#62B7EE;--steel:#1E6FB8;--ice:#A9D6F2;--mint:#2FA8A0;--border:rgba(30,111,184,.16);--strong-border:rgba(59,159,224,.38);--shadow:0 16px 40px rgba(16,38,58,.08)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.75 system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;overflow-x:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}.wrap{width:min(1220px,calc(100% - 32px));margin:0 auto}.site-header{position:fixed;left:0;top:0;width:100%;z-index:50}.top-line{height:18px;background:var(--steel);color:#fff;font-size:11px;line-height:18px}.top-line-inner{display:flex;justify-content:space-between;align-items:center;height:18px}.link-btn{border:0;background:transparent;color:#fff;padding:0 4px;min-width:44px;height:18px}.window-bar{height:62px;background:#fdfefe;border-bottom:1px solid var(--border)}.window-bar-inner{height:62px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px}.brand{justify-self:start;display:flex;align-items:center;min-height:44px;font-weight:800;color:var(--title);font-size:20px}.brand img{display:block;max-height:36px;max-width:190px;object-fit:contain}.window-book-btn,.app-entry,.btn{min-height:44px;border-radius:10px;border:1px solid var(--strong-border);display:inline-flex;align-items:center;justify-content:center;padding:0 18px}.window-book-btn{background:#fff;color:var(--steel);font-weight:700}.app-entry{justify-self:end;background:linear-gradient(135deg,var(--bright),var(--brand) 48%,var(--steel));color:#fff;font-weight:700}.tab-track{height:40px;background:#dfeef8;border-bottom:1px solid var(--border)}.tab-track-inner{height:40px;display:flex;align-items:center;gap:6px}.tab-track a{height:32px;display:flex;align-items:center;padding:0 12px;border-radius:8px;color:var(--title)}.tab-track a.active{background:var(--brand);color:#fff}.site-main{padding-top:120px}.page{padding:34px 0 70px}.hero-card,.section-card,.content-card{background:#fff;border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow)}.hero-card{padding:28px}.hero-card h1{font-size:clamp(28px,4vw,32px);line-height:1.25;color:var(--title);margin:6px 0 14px}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--steel);font-size:14px;font-weight:800;letter-spacing:.04em}.lead{font-size:17px;color:var(--muted);max-width:860px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:20px}.btn.primary{background:linear-gradient(135deg,var(--bright),var(--brand) 48%,var(--steel));color:#fff;border:0}.btn.secondary{background:#fff;color:var(--steel)}.media-slot{background:linear-gradient(180deg,#e8f5fd,#f9fcff);border:1px solid var(--border);border-radius:14px;overflow:hidden;display:flex;align-items:center;justify-content:center}.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center;display:block}.banner-slot{max-height:300px;min-height:180px;margin-bottom:22px}.banner-slot img{max-height:300px}.section{margin-top:28px}.section-title{display:flex;justify-content:space-between;gap:12px;align-items:end;margin-bottom:14px}.section-title h2{margin:0;color:var(--title);font-size:24px}.section-title p{margin:0;color:var(--aux);font-size:14px}.section-card{padding:24px}.grid-2,.grid-3,.grid-4,.grid-6{display:grid;gap:16px}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}.grid-6{grid-template-columns:repeat(3,1fr)}.mini-card,.feature-card,.status-card,.number-card,.faq-item{background:#f9fcff;border:1px solid var(--border);border-radius:12px;padding:18px}.mini-card h3,.feature-card h3,.status-card h3,.number-card h3{margin:0 0 8px;color:var(--title);font-size:18px}.mini-card p,.feature-card p,.status-card p,.number-card p{margin:0;color:var(--muted)}.tag-chip{display:inline-block;padding:3px 8px;border-radius:6px;background:var(--ice);color:var(--title);font-size:12px;font-weight:800}.tag-chip.mint{background:#caece9}.feature-card .media-slot{height:200px;margin-bottom:14px}.two-col{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(280px,.85fr);gap:22px;align-items:start}.two-col.reverse{grid-template-columns:minmax(280px,.85fr) minmax(0,1.15fr)}.copy p{margin:0 0 14px}.copy ul{padding-left:20px}.number-list{display:grid;gap:10px}.number-row{display:grid;grid-template-columns:68px 1fr;gap:14px;align-items:start;padding:15px;border-radius:12px;background:#f8fbfe;border:1px solid var(--border)}.number-row strong{font-size:27px;line-height:1;color:var(--steel)}.number-row b{color:var(--title)}.number-row p{margin:5px 0 0;color:var(--muted)}.article-body{max-width:900px}.article-body h2{font-size:22px;color:var(--title);margin:28px 0 10px}.article-body h3{font-size:18px;color:var(--title)}.article-body p{margin:0 0 15px}.article-body li{margin:6px 0}.index-signs .mini-card:nth-child(2n){border-top:4px solid var(--mint)}.index-signs .mini-card:nth-child(2n+1){border-top:4px solid var(--bright)}.shelf-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.shelf-item{display:grid;grid-template-columns:100px 1fr;gap:14px;padding:16px;border:1px solid var(--border);background:#fff;border-radius:12px}.shelf-item b{color:var(--steel)}.app-showcase{display:grid;grid-template-columns:320px 1fr;gap:28px;align-items:center}.app-showcase .media-slot{height:420px}.app-icon{width:64px;height:64px;object-fit:contain;border-radius:14px}.site-footer{background:var(--title);color:#C7D8E6;padding:42px 0 calc(42px + env(safe-area-inset-bottom))}.footer-logo-line{display:flex;align-items:center;gap:12px;margin-bottom:24px}.footer-logo-line img{max-height:34px;max-width:180px;object-fit:contain}.footer-logo-line strong{display:block;color:#fff}.footer-logo-line span{font-size:12px}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}.footer-grid h3{color:#fff;margin:0 0 10px}.footer-grid a{display:block;padding:3px 0;color:#C7D8E6}.footer-note{border-top:1px solid rgba(255,255,255,.12);padding-top:18px;margin-top:24px}.copyright{color:#9fb6c9;font-size:14px}.page-mask{position:fixed;inset:0;background:rgba(16,38,58,.32);z-index:70;opacity:0;pointer-events:none;transition:.18s}.page-mask.open{opacity:1;pointer-events:auto}.window-book,.search-layer{position:fixed;left:0;right:0;top:80px;z-index:80;visibility:hidden;pointer-events:none;transform:translateY(-12px);opacity:0;transition:.18s}.window-book.open,.search-layer.open{visibility:visible;pointer-events:auto;transform:none;opacity:1}.window-book-panel,.search-card{background:#fff;border:1px solid var(--border);box-shadow:var(--shadow);border-radius:0 0 16px 16px;max-height:50vh;overflow:auto}.window-book-head,.search-head{position:sticky;top:0;background:#fff;display:flex;align-items:center;justify-content:space-between;gap:10px;padding:14px 18px;border-bottom:1px solid var(--border);z-index:2}.mini-brand{display:flex;align-items:center;gap:10px;color:var(--title)}.mini-brand img{max-height:30px;max-width:150px;object-fit:contain}.close-btn{min-height:44px;padding:0 14px;border:1px solid var(--strong-border);border-radius:10px;background:#fff;color:var(--steel)}.window-book-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:18px}.window-book-grid h3{margin:0 0 8px;color:var(--title)}.window-book-grid a{display:block;padding:8px;border-radius:9px}.window-book-grid a:hover{background:#eef7fd}.window-book-grid b{display:block;color:var(--steel)}.window-book-grid span{display:block;color:var(--aux);font-size:12px;line-height:1.45}.search-card{padding-bottom:18px}.search-head h2{margin:0;color:var(--title);font-size:20px}.search-look{display:block;margin:18px}.search-look span{display:block;margin-bottom:8px;color:var(--muted)}.search-look input{width:100%;min-height:48px;border:1px solid var(--strong-border);border-radius:10px;padding:0 14px;background:#f8fcff;color:var(--text)}.preset-links{display:flex;flex-wrap:wrap;gap:10px;padding:0 18px}.preset-links a{min-height:44px;padding:0 16px;display:inline-flex;align-items:center;border-radius:10px;background:#edf7fd;color:var(--steel);border:1px solid var(--border)}.overlay-open{overflow:hidden}.mobile-bottom{display:none}.notice{padding:14px 16px;border-left:4px solid var(--mint);background:#eef9f8;border-radius:8px;color:var(--text)}.legal-list{display:grid;gap:14px}.legal-item{padding:18px;border:1px solid var(--border);border-radius:12px;background:#fff}.legal-item h2{margin:0 0 8px;font-size:20px;color:var(--title)}.faq-list{display:grid;gap:12px}.faq-item h2{font-size:18px;margin:0 0 8px;color:var(--title)}.faq-item p{margin:0;color:var(--muted)}
:focus-visible{outline:3px solid rgba(59,159,224,.45);outline-offset:2px}
@media(max-width:900px){.grid-4{grid-template-columns:repeat(2,1fr)}.grid-3,.grid-6{grid-template-columns:repeat(2,1fr)}.two-col,.two-col.reverse,.app-showcase{grid-template-columns:1fr}.app-showcase .media-slot{height:360px}.window-book-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:680px){.wrap{width:min(100% - 32px,1220px)}.site-main{padding-top:80px;padding-bottom:58px}.tab-track{display:none}.window-bar-inner{grid-template-columns:minmax(0,1fr) auto auto;gap:6px}.brand{min-width:0;font-size:18px}.brand img{max-width:120px}.window-book-btn,.app-entry{padding:0 12px}.page{padding-top:22px}.hero-card,.section-card{padding:18px}.banner-slot{min-height:140px}.grid-2,.grid-3,.grid-4,.grid-6,.shelf-list{grid-template-columns:1fr}.feature-card .media-slot{height:190px}.window-book,.search-layer{top:80px}.window-book-panel{width:100%;max-height:66vh;border-radius:0}.window-book-grid{grid-template-columns:1fr 1fr;gap:12px;padding:14px}.search-layer.open{top:0;bottom:0;background:#dff0fb;padding-top:80px}.search-card{height:100%;max-height:none;border-radius:0;background:#dff0fb}.search-head{background:#dff0fb}.mobile-bottom{position:fixed;left:0;right:0;bottom:0;height:calc(50px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:#fff;border-top:1px solid var(--border);z-index:60;display:grid;grid-template-columns:repeat(5,1fr)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;min-width:0;font-size:13px}.mobile-bottom a.active{background:var(--brand);color:#fff}.site-footer{padding-bottom:calc(72px + env(safe-area-inset-bottom))}.footer-grid{grid-template-columns:1fr 1fr}.app-showcase .media-slot{height:320px}.number-row{grid-template-columns:54px 1fr}.shelf-item{grid-template-columns:76px 1fr}.top-line{font-size:10px}}