:root{
  --bg:#F5FAFE;--deep:#E7F2FA;--panel:#FFFFFF;--soft:#D7EAF6;--title:#16324A;--text:#2A4156;
  --muted:#4E6A80;--assist:#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);
}
*{box-sizing:border-box}html{scroll-behavior:smooth;overflow-x:hidden}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.7 system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;overflow-x:hidden}body.ui-locked{overflow:hidden}
a{color:var(--navy);text-decoration:none}a:hover{text-decoration:none}button,a{touch-action:manipulation}img{max-width:100%;display:block}.skip-link{position:fixed;left:10px;top:-60px;z-index:1300;background:#fff;color:var(--navy);padding:10px 14px;border-radius:8px}.skip-link:focus{top:8px}.topline{position:fixed;inset:0 0 auto 0;height:22px;z-index:900;background:var(--navy);color:#fff}.topline-inner{width:min(1120px,calc(100% - 32px));height:22px;margin:auto;display:flex;align-items:center;justify-content:space-between}.topline-brand{font-size:12px;line-height:22px;letter-spacing:.04em}.top-search-btn{height:22px;padding:0 4px;border:0;background:transparent;color:#fff;font-size:12px;cursor:pointer}.masthead{position:fixed;top:22px;left:0;right:0;height:60px;z-index:890;background:#fff;border-bottom:1px solid var(--border)}.masthead-inner{width:min(1120px,calc(100% - 32px));height:60px;margin:auto;display:grid;grid-template-columns:1fr auto 1fr;align-items:center}.masthead-logo{justify-self:start;min-width:52px;min-height:44px;display:flex;align-items:center}.brand-logo,.drawer-logo,.footer-logo-img{height:28px;width:auto;object-fit:contain}.brand-fallback{font-size:16px;font-weight:800;color:var(--title);letter-spacing:.08em}.drawer-trigger,.app-link,.icon-button{min-height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;font-size:14px}.drawer-trigger{justify-self:center;border:1px solid var(--border-strong);background:#fff;color:var(--navy);padding:0 18px;cursor:pointer}.app-link{justify-self:end;padding:0 16px;color:#fff;background:linear-gradient(135deg,#6BB8EC 0%,#4AA3E0 55%,#1B4A6E 100%);font-weight:700}.section-tabs{position:fixed;top:82px;left:0;right:0;height:40px;z-index:880;background:var(--mist);border-bottom:1px solid var(--border)}.section-tabs-inner{height:40px;display:flex;justify-content:center;gap:8px;align-items:center}.section-tabs a{font-size:13px;padding:6px 16px;border-radius:999px;color:var(--navy)}.section-tabs a.is-current{background:var(--brand);color:#fff}.site-main{width:min(1120px,calc(100% - 32px));margin:0 auto;padding:150px 0 64px;min-height:70vh}.page-kicker{font-size:12px;color:var(--brand);letter-spacing:.1em;text-transform:uppercase;font-weight:800;margin-bottom:8px}.page-title,h1{font-size:24px;line-height:1.3;margin:0 0 14px;color:var(--title)}h2{font-size:20px;line-height:1.4;color:var(--title);margin:0 0 14px}h3{font-size:16px;line-height:1.5;color:var(--title);margin:0 0 8px}p{margin:0 0 14px}.lead{font-size:16px;color:var(--muted);max-width:820px}.page-hero{padding:28px 30px;border:1px solid var(--border);border-radius:14px;background:#fff;box-shadow:var(--shadow);margin-bottom:28px}.hero-cover{margin-bottom:22px}.media-slot{width:100%;min-height:160px;border-radius:12px;background:var(--mist);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;overflow:hidden}.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}.cover-slot{height:260px}.tile-slot{height:180px}.feature-slot{height:200px}.app-slot{height:min(360px,64vw)}.icon-slot{width:64px;height:64px;min-height:64px}.icon-slot img{width:48px;height:48px;object-fit:contain}.btn-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}.btn{min-height:42px;display:inline-flex;align-items:center;justify-content:center;padding:0 18px;border-radius:10px;font-size:14px;font-weight:700}.btn-primary{color:#fff;background:linear-gradient(135deg,#6BB8EC 0%,#4AA3E0 55%,#1B4A6E 100%)}.btn-secondary{color:var(--navy);background:#fff;border:1px solid var(--border-strong)}.btn:hover,.app-link:hover,.drawer-trigger:hover{filter:brightness(.98);transform:translateY(-1px)}a:focus-visible,button:focus-visible{outline:3px solid rgba(74,163,224,.35);outline-offset:2px}.section{margin:30px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:14px}.section-head p{margin:0;color:var(--muted)}.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.card{background:#fff;border:1px solid var(--border);border-radius:12px;padding:18px;box-shadow:var(--shadow)}.card .media-slot{margin-bottom:14px}.card p:last-child{margin-bottom:0}.text-link{display:inline-flex;min-height:44px;align-items:center;font-weight:700;color:var(--brand)}.numbered-list{display:grid;gap:10px}.number-row{display:grid;grid-template-columns:54px 1fr;gap:14px;align-items:start;padding:16px 0;border-bottom:1px solid var(--border)}.number-row:last-child{border-bottom:0}.number{font-size:22px;font-weight:900;color:var(--brand);letter-spacing:.06em}.shelf{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.shelf a{display:block;background:#fff;border:1px solid var(--border);border-radius:12px;padding:18px;min-height:110px}.shelf a b{display:block;font-size:16px;color:var(--title);margin-bottom:6px}.shelf a span{display:block;color:var(--muted)}.timeline{position:relative;padding-left:26px}.timeline:before{content:"";position:absolute;left:8px;top:8px;bottom:10px;width:2px;background:var(--soft)}.timeline-item{position:relative;padding:0 0 22px 18px}.timeline-item:before{content:"";position:absolute;left:-24px;top:7px;width:12px;height:12px;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 9px;border-radius:999px;background:var(--mist);color:var(--navy);font-size:12px;font-weight:700}.note-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.note-card{background:linear-gradient(180deg,#fff,#f8fcff);border:1px solid var(--border);border-radius:12px;padding:18px}.article{max-width:860px}.article section{margin:0 0 28px}.article p{margin-bottom:14px}.article ul{margin:0 0 14px;padding-left:20px}.article li{margin:6px 0}.info-strip{background:var(--mist);border:1px solid var(--border);border-radius:12px;padding:16px 18px;color:var(--muted)}.faq-list{display:grid;gap:12px}.faq-item{background:#fff;border:1px solid var(--border);border-radius:12px;padding:18px}.faq-item h2,.faq-item h3{margin-bottom:8px}.contact-channels{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.index-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.brand-intro{display:grid;grid-template-columns:minmax(0,280px) 1fr;gap:20px;align-items:center}.app-feature{display:grid;grid-template-columns:minmax(220px,.7fr) 1.3fr;gap:20px;align-items:center}.site-footer{background:var(--navy);color:#E7F2FA;border-top:1px solid rgba(234,245,252,.22);padding:36px 0 calc(76px + env(safe-area-inset-bottom))}.footer-inner{width:min(1120px,calc(100% - 32px));margin:auto}.footer-brand{display:flex;align-items:center;gap:14px;margin-bottom:24px}.footer-logo{min-width:50px;min-height:44px;display:flex;align-items:center}.footer-brand strong{display:block;font-size:16px;color:#fff}.footer-brand span{display:block;font-size:12px;color:#E7F2FA}.footer-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;padding:20px 0;border-top:1px solid rgba(234,245,252,.18);border-bottom:1px solid rgba(234,245,252,.18)}.footer-grid h2{font-size:13px;color:#fff;margin-bottom:8px}.footer-grid a{display:block;min-height:34px;color:#E7F2FA;font-size:13px;padding:5px 0}.footer-note,.footer-copy{font-size:13px;color:#E7F2FA;margin:16px 0 0}.ui-overlay{position:fixed;inset:0;z-index:1000;background:rgba(22,50,74,.38);opacity:0;pointer-events:none;transition:opacity .18s ease}.ui-overlay.is-open{opacity:1;pointer-events:auto}.drawer-panel{position:fixed;z-index:1040;right:0;top:0;bottom:0;width:min(400px,86vw);background:#fff;box-shadow:-18px 0 45px rgba(22,50,74,.18);transform:translateX(105%);visibility:hidden;pointer-events:none;transition:transform .22s ease,visibility .22s}.drawer-panel.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{height:74px;display:flex;align-items:center;justify-content:space-between;padding:0 16px;border-bottom:1px solid var(--border);position:sticky;top:0;background:#fff;z-index:1}.drawer-brand{display:flex;align-items:center;gap:10px}.icon-button{border:1px solid var(--border-strong);background:#fff;color:var(--navy);padding:0 14px;cursor:pointer}.drawer-groups{padding:10px 16px 30px;overflow:auto;height:calc(100% - 74px)}.drawer-groups section{padding:12px 0;border-bottom:1px solid var(--border)}.drawer-groups h2{font-size:13px;color:var(--assist);margin-bottom:6px}.drawer-groups a{display:grid;grid-template-columns:76px 1fr;gap:8px;padding:9px 8px;border-radius:9px;min-height:48px}.drawer-groups a:hover{background:var(--mist)}.drawer-groups b{font-size:14px;color:var(--title)}.drawer-groups span{font-size:12px;color:var(--muted)}.search-layer{position:fixed;left:0;right:0;top:82px;z-index:1030;visibility:hidden;pointer-events:none;opacity:0;transition:opacity .18s ease,visibility .18s}.search-layer.is-open{visibility:visible;pointer-events:auto;opacity:1}.search-card{width:min(760px,calc(100% - 32px));margin:14px auto;background:#fff;border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow);padding:20px}.search-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.search-head h2{margin:0}.search-presets{display:flex;flex-wrap:wrap;gap:10px}.search-presets a{min-height:44px;display:inline-flex;align-items:center;padding:0 14px;border-radius:10px;background:var(--mist);color:var(--navy);font-weight:700}.mobile-bottom{display:none}
@media(max-width:860px){.grid-3,.grid-4,.note-grid{grid-template-columns:1fr 1fr}.index-grid,.app-feature,.brand-intro{grid-template-columns:1fr}.brand-intro .media-slot{max-width:360px}.footer-grid{grid-template-columns:1fr 1fr}.contact-channels{grid-template-columns:1fr}.shelf{grid-template-columns:1fr}}
@media(max-width:640px){body{font-size:15px}.topline-inner,.masthead-inner,.site-main,.footer-inner{width:calc(100% - 32px)}.section-tabs{display:none}.site-main{padding-top:104px;padding-bottom:78px}.masthead-inner{grid-template-columns:1fr auto 1fr}.masthead-logo{min-width:44px}.drawer-trigger{padding:0 14px}.app-link{padding:0 12px}.page-hero{padding:22px 18px}.page-title,h1{font-size:24px}.grid-3,.grid-2,.grid-4,.note-grid{grid-template-columns:1fr}.cover-slot{height:260px}.tile-slot{height:180px}.feature-slot{height:200px}.shelf{grid-template-columns:1fr}.number-row{grid-template-columns:44px 1fr}.footer-grid{grid-template-columns:1fr 1fr;gap:14px}.site-footer{padding-bottom:calc(70px + env(safe-area-inset-bottom))}.mobile-bottom{position:fixed;z-index:870;left:0;right:0;bottom:0;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);display:grid;grid-template-columns:repeat(5,1fr);background:#fff;border-top:1px solid var(--border);box-shadow:0 -8px 24px rgba(27,74,110,.08)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;min-width:0;color:var(--navy);font-size:12px}.mobile-bottom a.is-current{background:var(--brand);color:#fff;font-weight:800}.search-layer{inset:0;top:0;background:var(--navy);padding:18px;overflow:auto}.search-card{width:100%;min-height:100%;margin:0;background:var(--navy);color:#fff;border-color:rgba(255,255,255,.18);box-shadow:none}.search-head h2,.search-card p{color:#fff}.search-layer .icon-button{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}.search-presets{display:grid;grid-template-columns:1fr 1fr}.search-presets a{background:#fff;color:var(--navy)}.app-feature .app-slot{max-width:360px}.drawer-panel{width:86vw}.drawer-groups a{grid-template-columns:68px 1fr}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}