:root{--paper:#f4f8fc;--frost:#e8f1fa;--white:#fff;--secondary:#f7fbfe;--ink:#0e2a44;--text:#1c3a56;--muted:#3d5c78;--blue:#1e6fd9;--light:#6ba8f0;--deep:#0e4a9e;--amber:#e2b23a;--coral:#e07a62;--border:rgba(30,111,217,.26);--shadow:0 12px 28px rgba(14,42,68,.08)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;padding-top:102px;background:var(--paper);color:var(--text);font:15px/1.75 system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;overflow-x:hidden}a{color:var(--deep);text-decoration:none}a:hover{text-decoration:underline}button,input{font:inherit}button{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--deep);outline-offset:2px}img{max-width:100%;height:auto}h1,h2,h3{color:var(--ink);line-height:1.3;margin:0 0 16px}h1{font-size:24px}h2{font-size:20px}h3{font-size:16px}p{margin:0 0 16px}.wrap{width:min(960px,calc(100% - 32px));margin-inline:auto}.skip-link{position:fixed;z-index:110;top:-70px;left:16px;background:#fff;padding:8px}.skip-link:focus{top:4px}.site-header{position:fixed;z-index:70;inset:0 0 auto;height:62px;background:#e8f1fa;border-bottom:3px solid var(--blue)}.header-inner{width:min(960px,calc(100% - 32px));margin:auto;height:59px;display:flex;align-items:center;gap:16px}.brand{display:flex;align-items:center;gap:9px;color:var(--ink);min-width:0}.brand:hover{text-decoration:none}.brand strong{font-size:16px;line-height:1.1;display:block}.brand small{font-size:12px;line-height:1.3;display:block;color:var(--deep);letter-spacing:1px}.logo-box{width:40px;min-width:40px;height:32px;display:flex;align-items:center;justify-content:center}.logo-box img,.footer-brand img,.menu-identity img{height:28px;width:auto;max-width:46px;object-fit:contain}.header-pill{margin:auto;background:#fff;border:1px solid var(--border);border-radius:100px;padding:3px 18px;height:34px;white-space:nowrap;display:flex;align-items:center;font-size:13px}.top-actions{display:flex;gap:8px;white-space:nowrap}.icon-btn,.close-btn{background:#fff;border:1px solid var(--border);color:var(--ink);border-radius:12px;height:44px;min-width:44px;padding:0 12px;transition:180ms}.icon-btn:hover,.close-btn:hover{background:var(--frost)}.window-nav{height:40px;position:fixed;inset:62px 0 auto;z-index:60;background:#f0f7fd;border-bottom:1px solid var(--border)}.window-inner{width:min(960px,calc(100% - 32px));height:100%;display:flex;align-items:center;gap:24px;margin:auto}.window-link{display:inline-flex;align-items:center;gap:7px;color:var(--muted);font-size:13px}.window-square{width:14px;height:14px;display:inline-block;border:2px solid var(--blue);border-radius:0 0 0 4px}.window-link.is-active{font-weight:700;color:var(--ink)}.window-link.is-active .window-square{background:var(--blue);box-shadow:0 6px 16px rgba(30,111,217,.24)}.main-content{min-height:55vh}.page-intro,.home-intro{padding:32px 0 18px}.breadcrumb{font-size:13px;margin:0 0 17px;color:var(--muted)}.eyebrow{display:inline-block;color:var(--deep);font-size:13px;font-weight:700;letter-spacing:.4px;margin-bottom:10px}.lead{font-size:16px;color:var(--muted);max-width:750px}.home-intro{padding-top:38px}.intro-panel{max-width:750px}.intro-panel h1{margin-bottom:8px}.intro-panel .tagline{font-size:20px;color:var(--deep);font-weight:700;margin-bottom:14px}.primary-btn,.secondary-btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 18px;border-radius:12px;font-size:14px;white-space:nowrap;transition:180ms}.primary-btn{background:linear-gradient(135deg,#6ba8f0 0%,#1e6fd9 54%,#0e4a9e 100%);color:#f4f8fc;box-shadow:0 6px 16px rgba(30,111,217,.24)}.secondary-btn{background:#fff;color:var(--ink);border:1px solid var(--border)}.primary-btn:hover{color:#fff;filter:brightness(1.08);box-shadow:0 0 0 3px rgba(107,168,240,.5),0 10px 24px rgba(14,74,158,.24);text-decoration:none}.primary-btn:active{filter:brightness(1.06);box-shadow:0 0 0 4px rgba(226,178,58,.36),0 0 22px rgba(30,111,217,.50)}.feature-stack{display:grid;gap:18px;margin:30px 0}.feature{display:flex;gap:24px;padding:26px;border-radius:14px;background:#fff;border:1px solid var(--border);box-shadow:var(--shadow);align-items:center}.feature-content{flex:1;min-width:0}.feature-content p{margin-bottom:10px}.feature .media-slot{width:240px;height:160px;flex:0 0 240px}.feature.stagger{margin-right:40px;background:#f7fbfe}.feature.stagger:nth-child(2n){margin-left:55px;margin-right:0;flex-direction:row-reverse}.feature.horizontal{border-left:5px solid var(--blue)}.feature.wrap-text{align-items:flex-start;background:#fff}.feature.sheet{display:block}.feature.sheet .media-slot{float:right;margin:0 0 12px 20px}.feature.sheet::after{display:block;content:"";clear:both}.feature.slim{background:var(--frost);border-style:dashed}.media-slot{display:flex;align-items:center;justify-content:center;overflow:hidden;background:var(--paper);border:1px solid rgba(30,111,217,.12);border-radius:12px;margin:0}.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}.media-slot.app-visual{height:320px;width:240px}.text-link{font-weight:700;font-size:14px}.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:22px 0}.detail-grid article,.reading-block,.legal-block,.faq-item,.brand-strip{padding:24px;border-radius:14px;background:#fff;border:1px solid var(--border);box-shadow:var(--shadow)}.reading-block{margin:18px 0}.reading-block h2,.legal-block h2{margin-bottom:12px}.reading-block p:last-child,.legal-block p:last-child{margin-bottom:0}.reading-block:nth-of-type(even){background:var(--secondary)}.strip-heading{margin:40px 0 16px}.quick-row{display:flex;gap:10px;flex-wrap:wrap;margin:20px 0 10px}.quick-row a{background:#fff;border:1px solid var(--border);padding:8px 16px;border-radius:12px;min-height:44px;display:flex;align-items:center}.home-faq{display:grid;grid-template-columns:1fr 1fr;gap:12px}.home-faq article{background:#fff;padding:18px;border-radius:12px;border:1px solid var(--border)}.home-faq h3{margin-bottom:8px}.home-faq p{font-size:14px}.home-tail{margin:36px 0 50px}.about-banner{height:200px;width:100%;margin:20px 0}.app-showcase{display:flex;gap:20px;align-items:flex-start}.app-icon{width:48px;height:48px;flex:none}.app-visuals{display:flex;align-items:start;gap:12px;flex-direction:column}.faq-item{margin:14px 0}.faq-item h2{font-size:17px}.related-links{display:flex;flex-wrap:wrap;gap:10px;margin:30px 0 48px}.related-links a{border:1px solid var(--border);border-radius:10px;background:#fff;padding:8px 15px}.site-footer{background:var(--ink);color:#e8f1fa;border-top:3px solid var(--blue);padding:34px 0 22px;font-size:13px}.site-footer a{color:#e8f1fa}.footer-brand a{display:flex;gap:10px;align-items:center;font-size:16px}.footer-brand a span{font-size:12px;color:#b9d8f8}.footer-brand p{margin:12px 0 22px;color:#d2e2f0}.footer-groups{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}.footer-groups h2{color:#fff;font-size:15px}.footer-groups a{display:block;padding:2px 0}.footer-bottom{border-top:1px solid rgba(255,255,255,.2);margin-top:22px;padding-top:18px;color:#d8e7f4}.footer-bottom p{margin:4px 0}.overlay{position:fixed;inset:0;background:rgba(14,42,68,.55);z-index:80;opacity:0;visibility:hidden;pointer-events:none;transition:opacity 180ms,visibility 180ms}.overlay.visible{opacity:1;visibility:visible;pointer-events:auto}.menu-dialog,.search-dialog{position:fixed;z-index:90;visibility:hidden;pointer-events:none;opacity:0;transform:translateY(-10px);transition:opacity 180ms,transform 180ms,visibility 180ms;overflow-y:auto;max-height:70vh;box-shadow:0 24px 54px rgba(14,42,68,.25)}.menu-dialog.open,.search-dialog.open{visibility:visible;pointer-events:auto;opacity:1;transform:none}.dialog-open{overflow:hidden}.menu-dialog{top:73px;left:max(16px,calc((100vw - 960px)/2));width:min(560px,calc(100vw - 32px));background:#fff;border-left:8px solid var(--blue);border-radius:14px;padding:20px}.menu-head,.search-head{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:15px}.menu-identity{display:flex;align-items:center;gap:9px}.menu-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.menu-grid h2{font-size:16px;margin-bottom:9px;border-bottom:1px solid var(--border);padding-bottom:5px}.menu-grid a{display:block;padding:7px 0;border-bottom:1px solid rgba(30,111,217,.10)}.menu-grid a strong{display:block;font-size:14px}.menu-grid a small{display:block;color:var(--muted);font-size:12px}.search-dialog{top:73px;right:max(16px,calc((100vw - 960px)/2));width:min(420px,calc(100vw - 32px));background:var(--frost);border:1px solid var(--border);border-radius:14px;padding:20px}.search-dialog label{display:block;font-size:13px;margin:12px 0 4px}.search-dialog input{width:100%;border:1px solid var(--border);border-radius:10px;background:#fff;padding:10px 12px;color:var(--ink);outline-offset:2px}.search-links{display:flex;flex-wrap:wrap;gap:10px;margin:16px 0}.search-links a{display:inline-flex;align-items:center;min-height:44px;background:#fff;border:1px solid var(--border);padding:7px 15px;border-radius:10px}.search-links a[hidden]{display:none}.empty-message{font-size:13px}.mobile-bottom{display:none}
@media(max-width:700px){body{padding-top:62px;padding-bottom:calc(48px + env(safe-area-inset-bottom))}.header-inner{gap:8px}.header-pill,.window-nav{display:none}.top-actions{margin-left:auto}.icon-btn{padding:0 9px}.brand{gap:5px}.logo-box{width:31px;min-width:31px}.brand strong{font-size:16px}.feature,.feature.stagger:nth-child(2n){flex-direction:column;align-items:stretch}.feature.stagger,.feature.stagger:nth-child(2n){margin:0}.feature{padding:19px}.feature .media-slot{width:100%;height:168px;flex:auto}.feature .app-visual{width:min(240px,100%);height:320px}.feature.sheet .media-slot{float:none;margin:12px auto}.detail-grid,.home-faq{grid-template-columns:1fr}.footer-groups{grid-template-columns:repeat(2,1fr)}.menu-dialog{top:68px;max-height:72vh;padding:16px}.menu-grid{grid-template-columns:1fr}.search-dialog{inset:0;width:100%;height:100%;max-height:none;border-radius:0;background:var(--ink);color:#e8f1fa;padding:72px 20px 25px}.search-dialog h2,.search-dialog label{color:#e8f1fa}.search-dialog .search-head{align-items:start}.search-dialog a{color:var(--ink)}.mobile-bottom{position:fixed;display:grid;z-index:72;grid-template-columns:repeat(4,1fr);bottom:0;left:0;right:0;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:var(--frost);border-top:1px solid var(--border)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:13px}.mobile-bottom a.is-active{color:var(--ink);border-top:3px solid var(--blue);box-shadow:inset 0 6px 16px rgba(30,111,217,.24);font-weight:700}.app-showcase{flex-direction:column}.about-banner{height:200px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}