:root{--bg:#F5FAFE;--bg-deep:#E7F2FA;--card:#FFFFFF;--soft:#D7EAF6;--title:#16324A;--text:#2A4156;--muted:#4E6A80;--aux:#6E8899;--blue:#4AA3E0;--blue2:#6BB8EC;--deep:#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;--top:22px;--mast:60px;--tabs:40px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","PingFang SC",Arial,sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}body.ui-locked{overflow:hidden}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}button{font:inherit}button,a{-webkit-tap-highlight-color:transparent}.shell{width:min(1120px,calc(100% - 32px));margin:0 auto}.skip-link{position:fixed;left:16px;top:-80px;z-index:9999;background:#fff;color:var(--deep);padding:8px 12px;border-radius:8px}.skip-link:focus{top:8px}.topline{position:fixed;z-index:60;top:0;left:0;right:0;height:22px;background:var(--deep);color:#fff;font-size:12px}.topline-inner{height:22px;display:flex;align-items:center;justify-content:space-between}.text-button{border:0;background:transparent;color:#fff;min-height:22px;padding:0 2px;cursor:pointer}.masthead{position:fixed;z-index:59;top:22px;left:0;right:0;height:60px;background:#fff;border-bottom:1px solid var(--border)}.masthead-inner{height:60px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center}.brand-link{justify-self:start;display:flex;align-items:center;min-width:44px;min-height:44px}.brand-logo,.footer-logo{height:28px;width:auto;object-fit:contain}.brand-fallback{font-size:16px;font-weight:800;color:var(--title)}.drawer-trigger,.app-link{min-height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;padding:0 16px;font-size:14px}.drawer-trigger{justify-self:center;border:1px solid var(--border-strong);background:#fff;color:var(--deep);cursor:pointer}.app-link{justify-self:end;color:#fff;background:linear-gradient(135deg,#6BB8EC 0%,#4AA3E0 55%,#1B4A6E 100%)}.section-tabs{position:fixed;z-index:58;top:82px;left:0;right:0;height:40px;background:var(--mist);border-bottom:1px solid var(--border)}.tab-inner{height:40px;display:flex;align-items:center;justify-content:center;gap:8px}.tab-link{font-size:13px;min-height:30px;padding:3px 14px;border-radius:9px;color:var(--deep)}.tab-link.is-active{background:var(--blue);color:#fff}.site-main{padding-top:146px;min-height:70vh}.page-hero{padding:34px 0 20px}.eyebrow{font-size:12px;letter-spacing:.12em;color:var(--blue);font-weight:800}.page-hero h1{font-size:24px;line-height:1.3;color:var(--title);margin:7px 0 12px}.page-hero p{max-width:820px;margin:0;color:var(--muted)}.section{padding:18px 0 34px}.section-title{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:14px}.section-title h2{font-size:20px;color:var(--title);margin:0}.section-title p{margin:0;color:var(--aux);font-size:13px}.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.card-grid.two{grid-template-columns:repeat(2,1fr)}.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:18px;box-shadow:var(--shadow)}.card h2,.card h3{color:var(--title);margin-top:0}.card h3{font-size:16px}.card p{margin:0 0 12px}.card p:last-child{margin-bottom:0}.media-slot{width:100%;height:180px;background:var(--mist);border:1px solid var(--border);border-radius:12px;display:flex;align-items:center;justify-content:center;overflow:hidden;margin-bottom:14px}.media-slot.medium{height:200px}.media-slot.banner{height:260px}.media-slot.app-visual{height:340px}.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}.cover-copy{text-align:center;max-width:800px;margin:16px auto 0}.cover-copy h1{font-size:24px;line-height:1.3;color:var(--title);margin:0 0 10px}.cover-copy .lead{margin:0 auto;color:var(--muted);max-width:760px}.button-row{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:18px}.btn{height:42px;padding:0 18px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;white-space:nowrap}.btn.primary{background:linear-gradient(135deg,#6BB8EC 0%,#4AA3E0 55%,#1B4A6E 100%);color:#fff}.btn.secondary{background:#fff;border:1px solid var(--border-strong);color:var(--deep)}.number-list{display:grid;gap:10px}.number-item{display:grid;grid-template-columns:54px 1fr;gap:14px;padding:14px;background:#fff;border:1px solid var(--border);border-radius:12px}.number-item .num{font-size:20px;font-weight:800;color:var(--blue)}.number-item h3{margin:0 0 4px;font-size:16px;color:var(--title)}.number-item p{margin:0;color:var(--muted)}.shelf{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}.shelf a,.shelf .shelf-item{background:#fff;border:1px solid var(--border);border-radius:12px;padding:16px;min-height:130px;display:flex;flex-direction:column;justify-content:space-between}.shelf strong{color:var(--title);font-size:16px}.shelf span{color:var(--muted);font-size:13px}.timeline{position:relative;margin-left:8px}.timeline:before{content:"";position:absolute;left:14px;top:8px;bottom:8px;width:2px;background:var(--soft)}.timeline-item{position:relative;padding:0 0 22px 48px}.timeline-item:before{content:"";position:absolute;left:6px;top:6px;width:16px;height:16px;background:var(--blue);border:4px solid var(--mist);border-radius:50%}.timeline-item h3{margin:0 0 4px;font-size:16px;color:var(--title)}.timeline-item p{margin:0;color:var(--muted)}.status{display:inline-flex;margin-top:8px;padding:3px 9px;border-radius:999px;background:var(--mist);color:var(--deep);font-size:12px;border:1px solid var(--border)}.article{background:#fff;border:1px solid var(--border);border-radius:14px;padding:24px;box-shadow:var(--shadow)}.article h2{font-size:20px;color:var(--title);margin:28px 0 10px}.article h2:first-child{margin-top:0}.article h3{font-size:16px;color:var(--title);margin:22px 0 8px}.article p{margin:0 0 14px}.article ul{margin:0 0 14px;padding-left:1.2em}.article li{margin-bottom:8px}.note{background:var(--mist);border-left:4px solid var(--blue);padding:14px 16px;border-radius:10px;margin:18px 0}.index-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.index-list a{display:block;background:#fff;border:1px solid var(--border);border-radius:12px;padding:15px}.index-list strong{display:block;color:var(--title);margin-bottom:4px}.index-list span{color:var(--muted);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}.site-footer{background:var(--deep);color:#E7F2FA;border-top:1px solid rgba(234,245,252,.25);padding:34px 0 calc(26px + env(safe-area-inset-bottom))}.footer-grid{display:grid;grid-template-columns:2fr repeat(4,1fr);gap:24px}.footer-brand p{font-size:13px;margin:10px 0 0}.footer-name{font-weight:800}.footer-name span{font-weight:600;opacity:.85;margin-left:6px}.footer-group h2{font-size:13px;margin:0 0 10px;color:#fff}.footer-group a{display:block;font-size:13px;color:#E7F2FA;margin:6px 0}.footer-bottom{margin-top:24px;padding-top:16px;border-top:1px solid rgba(234,245,252,.2);font-size:13px}.page-overlay{position:fixed;inset:0;z-index:80;background:rgba(22,50,74,.34);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.page-overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.issue-drawer{position:fixed;z-index:90;top:0;right:0;width:400px;max-width:86vw;height:100vh;background:#fff;box-shadow:-20px 0 40px rgba(27,74,110,.16);transform:translateX(102%);visibility:hidden;pointer-events:none;transition:.24s ease;display:flex;flex-direction:column}.issue-drawer.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{height:68px;display:flex;align-items:center;justify-content:space-between;padding:0 18px;border-bottom:1px solid var(--border)}.drawer-brand{display:flex;align-items:center;gap:10px;color:var(--title)}.close-button{min-width:44px;min-height:44px;border:1px solid var(--border);background:#fff;border-radius:10px;color:var(--deep);cursor:pointer}.drawer-scroll{overflow:auto;padding:16px 18px 28px}.drawer-scroll section{margin-bottom:20px}.drawer-scroll h2{font-size:13px;color:var(--aux);margin:0 0 8px}.drawer-scroll a{display:block;padding:11px 0;border-bottom:1px solid var(--border)}.drawer-scroll strong{display:block;color:var(--title)}.drawer-scroll span{display:block;color:var(--muted);font-size:13px}.search-panel{position:fixed;z-index:89;top:82px;left:0;right:0;visibility:hidden;pointer-events:none;opacity:0;transform:translateY(-10px);transition:.2s}.search-panel.is-open{visibility:visible;pointer-events:auto;opacity:1;transform:none}.search-card{width:min(760px,calc(100% - 32px));margin:12px auto 0;background:#fff;border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow);padding:18px}.search-head{display:flex;justify-content:space-between;gap:18px;align-items:start}.search-head h2{font-size:20px;color:var(--title);margin:4px 0 0}.search-card p{color:var(--muted)}.preset-links{display:flex;gap:8px;flex-wrap:wrap}.preset-links a{min-height:40px;padding:7px 14px;border:1px solid var(--border-strong);border-radius:10px;color:var(--deep);background:var(--mist)}.mobile-bottom{display:none}.btn:hover,.drawer-trigger:hover,.app-link:hover,.tab-link:hover,.preset-links a:hover,.index-list a:hover,.shelf a:hover{filter:brightness(.98);transform:translateY(-1px)}a:focus-visible,button:focus-visible{outline:3px solid rgba(74,163,224,.35);outline-offset:2px}
@media (max-width:900px){.card-grid{grid-template-columns:1fr 1fr}.shelf{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1.5fr repeat(2,1fr)}.footer-group{margin-bottom:8px}}
@media (max-width:680px){:root{--tabs:0px}.shell{width:calc(100% - 32px)}.section-tabs{display:none}.site-main{padding-top:106px;padding-bottom:64px}.masthead-inner{grid-template-columns:1fr auto 1fr}.drawer-trigger,.app-link{padding:0 12px}.card-grid,.card-grid.two,.index-list{grid-template-columns:1fr}.shelf{grid-template-columns:1fr 1fr}.media-slot.banner{height:260px}.media-slot.app-visual{height:320px}.article{padding:18px}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.site-footer{padding-bottom:80px}.mobile-bottom{position:fixed;z-index:55;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)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--deep);min-width:0}.mobile-bottom a.is-active{background:var(--blue);color:#fff}.search-panel{top:0;bottom:0;background:var(--deep);padding:22px 0;overflow:auto}.search-panel.is-open{display:block}.search-card{margin:0 auto;background:var(--deep);border-color:rgba(255,255,255,.22);color:#fff;box-shadow:none}.search-head h2,.search-card .eyebrow,.search-card p{color:#fff}.search-card .close-button{background:transparent;color:#fff;border-color:rgba(255,255,255,.3)}.preset-links a{background:#fff;color:var(--deep);border-color:#fff}.issue-drawer{max-width:86vw}.page-hero{padding-top:28px}.section{padding-bottom:26px}}
@media (max-width:420px){.shelf{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}.masthead-inner{gap:6px}.brand-link{min-width:44px}.drawer-trigger,.app-link{font-size:13px;padding:0 10px}}