:root{
    --page:#F5FAFE;--deep:#E7F2FA;--card:#FFFFFF;--secondary:#D7EAF6;--title:#16324A;
    --text:#2A4156;--muted:#4E6A80;--soft:#6E8899;--brand:#4AA3E0;--bright:#6BB8EC;
    --navy:#1B4A6E;--mist:#EAF5FC;--border:rgba(74,163,224,.16);--border-strong:rgba(74,163,224,.42);
    --shadow:0 12px 28px rgba(27,74,110,.08);--radius:12px;--shell:1120px
}
*{box-sizing:border-box}html{scroll-behavior:smooth;overflow-x:hidden}body{margin:0;background:var(--page);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden;padding-top:122px}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}button{font:inherit}.shell{width:min(var(--shell),calc(100% - 32px));margin:0 auto}.skip-link{position:fixed;left:16px;top:-80px;z-index:120;background:#fff;color:var(--navy);padding:10px 14px;border-radius:10px;box-shadow:var(--shadow)}.skip-link:focus{top:8px}
.site-header{position:fixed;inset:0 0 auto 0;z-index:80}.microbar{height:22px;background:var(--navy);color:#fff;font-size:12px}.microbar-inner{height:100%;display:flex;align-items:center;justify-content:space-between}.text-button{border:0;background:transparent;color:inherit;padding:0;min-height:22px;cursor:pointer}.masthead{height:60px;background:#fff;border-bottom:1px solid var(--border)}.masthead-inner{height:100%;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px}.brand-link{display:inline-flex;align-items:center;justify-self:start;min-width:44px;min-height:44px}.brand-image-slot img,.footer-logo-slot img,.drawer-logo-slot img{height:28px;width:auto;object-fit:contain;object-position:center}.brand-fallback{display:none;font-weight:800;font-size:16px;color:var(--title)}.brand-image-slot:empty + .brand-fallback{display:inline}.masthead-action{min-height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;padding:0 16px;font-size:14px;white-space:nowrap}.drawer-open{justify-self:center;border:1px solid var(--border-strong);background:var(--mist);color:var(--navy);cursor:pointer}.app-link{justify-self:end;background:linear-gradient(135deg,#6BB8EC 0%,#4AA3E0 55%,#1B4A6E 100%);color:#fff}.section-tabs{height:40px;background:var(--mist);border-bottom:1px solid var(--border)}.section-tabs-inner{height:100%;display:flex;justify-content:center;align-items:center;gap:8px}.section-tabs a{height:30px;min-width:84px;display:inline-flex;align-items:center;justify-content:center;border-radius:9px;font-size:13px;color:var(--navy)}.section-tabs a.is-active{background:var(--brand);color:#fff}
.site-main{min-height:60vh}.hero,.page-hero{padding:34px 0 22px}.hero-grid{display:grid;gap:18px}.media-slot{background:var(--mist);border:1px solid var(--border);border-radius:14px;display:flex;align-items:center;justify-content:center;overflow:hidden}.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}.hero-media{height:260px}.hero-copy{max-width:760px}.eyebrow{font-size:12px;letter-spacing:.12em;color:var(--brand);font-weight:700;text-transform:uppercase}.hero h1,.page-hero h1{margin:4px 0 10px;color:var(--title);font-size:24px;line-height:1.3}.hero-lead,.page-lead{font-size:15px;color:var(--muted);margin:0;max-width:860px}.button-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.button{height:42px;padding:0 18px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;font-size:14px;white-space:nowrap;border:1px solid transparent}.button.primary{background:linear-gradient(135deg,#6BB8EC 0%,#4AA3E0 55%,#1B4A6E 100%);color:#fff}.button.secondary{background:#fff;border-color:var(--border-strong);color:var(--navy)}.button:hover,.masthead-action:hover,.section-tabs a:hover,.mobile-bottom a:hover{transform:translateY(-1px)}a:focus-visible,button:focus-visible{outline:3px solid rgba(74,163,224,.34);outline-offset:2px}
.section{padding:28px 0}.section.soft{background:var(--deep)}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:16px}.section-head h2{margin:0;color:var(--title);font-size:20px}.section-head p{margin:0;color:var(--soft);font-size:13px}.cards-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.cards-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.card{background:#fff;border:1px solid var(--border);border-radius:14px;padding:18px;box-shadow:var(--shadow)}.card h2,.card h3{color:var(--title);margin:0 0 8px}.card h3{font-size:16px}.card p{margin:0;color:var(--text)}.card .media-slot{margin:-4px -4px 14px;height:180px;box-shadow:none}.feature-row{display:grid;grid-template-columns:minmax(0,380px) minmax(0,1fr);gap:22px;align-items:stretch}.feature-row.reverse{grid-template-columns:minmax(0,1fr) minmax(0,380px)}.feature-row .media-slot{height:200px}.feature-copy{background:#fff;border:1px solid var(--border);border-radius:14px;padding:22px}.feature-copy h2{margin:0 0 10px;color:var(--title);font-size:20px}.number-list,.shelf-list,.plain-list{display:grid;gap:10px;margin:16px 0 0;padding:0;list-style:none}.number-list li{display:grid;grid-template-columns:36px 1fr;gap:12px;align-items:start;padding:12px;background:var(--mist);border-radius:10px}.num{width:36px;height:36px;border-radius:10px;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800}.shelf-list li{display:flex;gap:14px;justify-content:space-between;align-items:center;border-bottom:1px solid var(--border);padding:12px 0}.shelf-list li:last-child{border-bottom:0}.shelf-list strong{color:var(--title)}.shelf-list span{color:var(--soft);font-size:13px}.timeline{position:relative;margin:18px 0 0 10px;padding-left:26px;border-left:2px solid var(--secondary);display:grid;gap:18px}.timeline article{position:relative;background:#fff;border:1px solid var(--border);border-radius:12px;padding:16px}.timeline article:before{content:"";position:absolute;left:-35px;top:22px;width:14px;height:14px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 5px var(--mist)}.status{display:inline-flex;align-items:center;min-height:28px;padding:0 10px;background:var(--mist);border:1px solid var(--border);border-radius:999px;color:var(--navy);font-size:12px;font-weight:700}.prose{max-width:860px}.prose h2{font-size:20px;color:var(--title);margin:28px 0 10px}.prose h3{font-size:16px;color:var(--title);margin:22px 0 8px}.prose p{margin:0 0 14px}.prose ul{padding-left:20px}.prose li{margin-bottom:8px}.quote-note{margin:18px 0;padding:16px 18px;border-left:4px solid var(--brand);background:var(--mist);border-radius:0 12px 12px 0}.index-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.index-tile{background:#fff;border:1px solid var(--border);border-radius:12px;padding:18px;min-height:140px;display:flex;flex-direction:column}.index-tile strong{color:var(--title);font-size:16px}.index-tile p{color:var(--muted);margin:8px 0 14px}.index-tile span{margin-top:auto;color:var(--brand);font-size:13px}.faq-list{display:grid;gap:12px}.faq-item{background:#fff;border:1px solid var(--border);border-radius:12px;padding:18px}.faq-item h2{font-size:16px;margin:0 0 8px;color:var(--title)}.faq-item p{margin:0}.app-showcase{display:grid;grid-template-columns:minmax(0,360px) minmax(0,1fr);gap:24px}.app-visual{height:360px}.icon-line{display:flex;align-items:center;gap:12px;margin-bottom:14px}.icon-line .media-slot{width:48px;height:48px;border-radius:12px;flex:0 0 48px}.brand-block{display:grid;grid-template-columns:220px 1fr;gap:20px;align-items:center}.brand-block .media-slot{height:180px}.notice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.notice{background:var(--mist);border:1px solid var(--border);border-radius:12px;padding:16px}.notice strong{color:var(--title)}
.site-footer{background:var(--navy);color:#E7F2FA;border-top:1px solid rgba(234,245,252,.25);padding:34px 0 68px;font-size:13px}.footer-grid{display:grid;grid-template-columns:2fr repeat(4,1fr);gap:24px}.footer-grid h3{font-size:13px;margin:0 0 8px;color:#fff}.footer-grid a{display:block;opacity:.9;padding:4px 0}.footer-grid a:hover{opacity:1}.footer-brand p{max-width:360px;margin:10px 0 0;opacity:.9}.footer-brandline{display:flex;align-items:center;gap:10px}.footer-bottom{margin-top:26px;padding-top:16px;border-top:1px solid rgba(234,245,252,.16);opacity:.84}
.drawer-panel{position:fixed;z-index:110;top:0;right:0;width:min(400px,86vw);height:100vh;background:#fff;color:var(--text);box-shadow:-16px 0 40px rgba(27,74,110,.18);transform:translateX(105%);visibility:hidden;pointer-events:none;transition:transform .22s ease,visibility .22s ease;display:flex;flex-direction:column}.drawer-visible .drawer-panel{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{min-height:72px;display:flex;align-items:center;justify-content:space-between;padding:0 18px;border-bottom:1px solid var(--border)}.drawer-title{display:flex;align-items:center;gap:10px}.icon-button{min-width:44px;min-height:44px;border:1px solid var(--border-strong);background:#fff;color:var(--navy);border-radius:10px;cursor:pointer}.drawer-scroll{overflow:auto;padding:14px 18px 28px}.drawer-scroll section{padding:8px 0 14px}.drawer-scroll h2{font-size:13px;color:var(--soft);margin:0 0 6px}.drawer-scroll a{display:block;padding:12px;border-radius:10px}.drawer-scroll a:hover{background:var(--mist)}.drawer-scroll strong{display:block;color:var(--title)}.drawer-scroll span{display:block;color:var(--muted);font-size:13px;margin-top:2px}.page-overlay{position:fixed;inset:0;background:rgba(22,50,74,.34);z-index:100;opacity:0;visibility:hidden;pointer-events:none;transition:.18s}.drawer-visible .page-overlay,.search-visible .page-overlay{opacity:1;visibility:visible;pointer-events:auto}.modal-lock{overflow:hidden}.search-layer{position:fixed;z-index:108;top:82px;left:50%;transform:translate(-50%,-16px);width:min(720px,calc(100% - 32px));visibility:hidden;opacity:0;pointer-events:none;transition:.18s}.search-visible .search-layer{visibility:visible;opacity:1;pointer-events:auto;transform:translate(-50%,0)}.search-card{background:#fff;border:1px solid var(--border-strong);border-radius:14px;box-shadow:var(--shadow);padding:18px}.search-head{display:flex;align-items:flex-start;justify-content:space-between;gap:14px}.search-head strong{color:var(--title);font-size:16px}.search-head p{margin:4px 0 0;color:var(--muted)}.preset-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:16px}.preset-grid a{min-height:44px;display:flex;align-items:center;justify-content:center;background:var(--mist);border:1px solid var(--border);border-radius:10px;color:var(--navy)}.mobile-bottom{display:none}
@media (max-width:900px){.cards-3,.notice-grid{grid-template-columns:1fr 1fr}.index-grid{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1.5fr 1fr 1fr}.footer-grid>div:nth-child(4),.footer-grid>div:nth-child(5){margin-top:4px}.feature-row,.feature-row.reverse,.app-showcase,.brand-block{grid-template-columns:1fr}.feature-row.reverse .media-slot{order:-1}.app-visual{height:320px}}
@media (max-width:680px){body{padding-top:82px;padding-bottom:64px}.section-tabs{display:none}.shell{width:min(var(--shell),calc(100% - 32px))}.masthead-inner{grid-template-columns:1fr auto 1fr;gap:8px}.masthead-action{padding:0 10px}.hero,.page-hero{padding-top:24px}.hero-media{height:220px}.cards-3,.cards-2,.notice-grid,.index-grid{grid-template-columns:1fr}.feature-row .media-slot{height:190px}.card .media-slot{height:170px}.footer-grid{grid-template-columns:1fr 1fr;gap:20px}.footer-brand{grid-column:1/-1}.site-footer{padding-bottom:92px}.mobile-bottom{position:fixed;z-index:90;left:0;right:0;bottom:0;min-height:48px;padding-bottom:env(safe-area-inset-bottom);background:#fff;border-top:1px solid var(--border);display:grid;grid-template-columns:repeat(5,1fr)}.mobile-bottom a{min-height:48px;display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--navy)}.mobile-bottom a.is-active{background:var(--brand);color:#fff}.search-layer{top:0;left:0;width:100%;height:100vh;transform:none;background:var(--navy);padding:72px 16px 16px}.search-visible .search-layer{transform:none}.search-card{background:transparent;border:0;box-shadow:none;color:#fff;padding:0}.search-head strong,.search-head p{color:#fff}.search-head .icon-button{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}.preset-grid{grid-template-columns:1fr 1fr}.preset-grid a{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.22)}.drawer-visible .mobile-bottom,.search-visible .mobile-bottom{z-index:80}.drawer-panel{width:86vw}.hero-copy{max-width:none}}
@media (max-width:420px){.masthead{height:60px}.brand-link{min-width:40px}.masthead-action{font-size:13px;padding:0 8px}.app-link{max-width:84px}.drawer-open{max-width:72px}.hero-media{height:200px}.footer-grid{grid-template-columns:1fr 1fr}.preset-grid{grid-template-columns:1fr}.button-row{display:grid;grid-template-columns:1fr 1fr}.button{padding:0 10px}.section{padding:24px 0}}