:root{--bg:#F3F6F9;--surface:#fff;--soft:#E8EEF5;--ink:#0B1220;--text:#1E293B;--muted:#475569;--subtle:#64748B;--blue:#2563EB;--blue2:#60A5FA;--blue3:#1D4ED8;--lime:#65A30D;--slate:#334155;--line:rgba(37,99,235,.16);--shadow:0 14px 36px rgba(11,18,32,.08);--radius:18px;--max:1180px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.75;overflow-x:hidden}body.is-locked{overflow:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}.shell{width:min(calc(100% - 32px),var(--max));margin-inline:auto}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.site-header{position:fixed;inset:0 0 auto;z-index:60}.status-bar{height:32px;background:var(--slate);color:#fff}.status-inner{height:32px;display:flex;align-items:center;justify-content:space-between;font-size:13px;letter-spacing:.04em}.status-brand{font-weight:800}.text-button{appearance:none;border:0;background:transparent;color:#fff;min-height:32px;padding:0 8px;cursor:pointer}.command-bar{height:60px;background:#fff;border-bottom:1px solid var(--line)}.command-inner{height:60px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px}.square-button{width:44px;height:44px;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--ink);font-size:24px;cursor:pointer}.command-logo{justify-self:center;display:inline-flex;align-items:center;min-height:44px;font-size:22px;font-weight:900;color:var(--ink);letter-spacing:.02em}.command-logo img{display:block;max-width:180px;max-height:32px;width:auto;height:auto}.app-link{justify-self:end;display:inline-flex;align-items:center;min-height:44px;padding:0 18px;border-radius:999px;background:linear-gradient(135deg,var(--blue2) 0%,var(--blue) 52%,var(--blue3) 100%);color:#fff;font-weight:800}.tab-bar{height:44px;background:#fff;border-bottom:1px solid var(--line)}.tab-inner{height:44px;display:grid;grid-template-columns:repeat(6,1fr);align-items:stretch}.tab-link{display:flex;align-items:center;justify-content:center;position:relative;color:var(--muted);font-size:14px}.tab-link.is-current{color:var(--blue);font-weight:800}.tab-link.is-current:after{content:"";position:absolute;bottom:0;left:26%;right:26%;height:3px;background:var(--blue);border-radius:3px 3px 0 0}.site-main{padding-top:164px;padding-bottom:48px;min-height:70vh}.page-hero{display:grid;gap:16px;margin-bottom:26px}.eyebrow{margin:0;color:var(--blue);font-weight:900;font-size:13px;letter-spacing:.12em;text-transform:uppercase}.page-hero h1,.cover-copy h1{margin:0;color:var(--ink);font-size:clamp(28px,4vw,32px);line-height:1.25;letter-spacing:-.02em}.lead{max-width:860px;margin:0;color:var(--muted);font-size:17px}.section{margin-top:28px}.section-head{display:flex;justify-content:space-between;align-items:end;gap:16px;margin-bottom:14px}.section h2,.section-head h2{margin:0;color:var(--ink);font-size:22px;line-height:1.3}.section-head p{margin:0;color:var(--subtle);font-size:14px}.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.padded{padding:24px}.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.link-card{display:block;background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px;transition:.2s transform,.2s border-color,.2s box-shadow}.link-card:hover,.link-card:focus-visible{transform:translateY(-2px);border-color:rgba(37,99,235,.42);box-shadow:var(--shadow);outline:none}.link-card strong{display:block;color:var(--ink);margin-bottom:6px}.link-card p{margin:0;color:var(--muted)}.dot-title{display:flex;align-items:center;gap:10px}.dot-title:before{content:"";width:9px;height:9px;border-radius:50%;background:var(--blue);flex:none}.media-frame{margin:0;border-radius:18px;overflow:hidden;background:var(--soft);border:1px solid var(--line);min-height:180px;display:flex;align-items:center;justify-content:center}.media-frame img{display:block;width:100%;height:auto;max-height:340px;object-fit:contain}.media-placeholder{aspect-ratio:16/7;background:linear-gradient(135deg,#eef3f8,#e2eaf3);position:relative}.media-placeholder:after{content:"91APP";color:#94a3b8;font-weight:900;letter-spacing:.18em}.cover-card{display:grid;gap:22px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:clamp(22px,4vw,38px);box-shadow:var(--shadow)}.cover-copy{max-width:850px}.cover-copy .intro{max-width:820px;margin:14px 0 0;color:var(--muted)}.button-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:20px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:999px;font-weight:800}.button.primary{background:linear-gradient(135deg,var(--blue2) 0%,var(--blue) 52%,var(--blue3) 100%);color:#fff}.button.secondary{background:#fff;color:var(--blue);border:1px solid rgba(37,99,235,.32)}.button:hover,.button:focus-visible,.app-link:hover,.app-link:focus-visible,.square-button:focus-visible,.text-button:focus-visible,.close-button:focus-visible{outline:3px solid rgba(96,165,250,.38);outline-offset:2px}.number-stack{display:grid;gap:12px}.number-item{display:grid;grid-template-columns:72px 1fr;gap:18px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px}.number-item .num{font-size:36px;line-height:1;color:var(--blue);font-weight:900;letter-spacing:-.05em}.number-item h3{margin:0 0 6px;color:var(--ink);font-size:18px}.number-item p{margin:0;color:var(--muted)}.feature-card{overflow:hidden}.feature-card .media-frame{border:0;border-radius:16px 16px 0 0;min-height:150px}.feature-copy{padding:18px}.feature-copy h3{margin:0 0 8px;color:var(--ink)}.feature-copy p{margin:0;color:var(--muted)}.stacked-feature{display:grid;grid-template-columns:minmax(240px,36%) 1fr;gap:22px;align-items:center;padding:20px}.stacked-feature+.stacked-feature{margin-top:16px}.stacked-feature h3{margin:0 0 8px;color:var(--ink)}.stacked-feature p{margin:0;color:var(--muted)}.topic-tile h3{margin:0 0 8px;color:var(--ink)}.topic-tile p{margin:0 0 12px;color:var(--muted)}.text-link{color:var(--blue);font-weight:800}.file-list{display:grid;gap:10px}.file-row{display:grid;grid-template-columns:42px 1fr auto;gap:14px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 16px}.file-icon{width:34px;height:34px;border-radius:10px;background:var(--soft);display:grid;place-items:center;color:var(--blue);font-weight:900}.file-row strong{color:var(--ink)}.file-row span{color:var(--subtle);font-size:14px}.timeline{position:relative;display:grid;gap:16px}.timeline:before{content:"";position:absolute;top:10px;bottom:10px;left:17px;width:2px;background:rgba(37,99,235,.2)}.timeline-item{position:relative;padding-left:52px}.timeline-dot{position:absolute;left:9px;top:8px;width:18px;height:18px;border-radius:50%;background:#fff;border:5px solid var(--blue);z-index:1}.timeline-item .card{padding:18px}.timeline-item h3{margin:0 0 6px;color:var(--ink)}.status-pill{display:inline-flex;align-items:center;min-height:30px;padding:0 10px;border-radius:999px;background:var(--soft);color:var(--blue3);font-size:13px;font-weight:800;margin-bottom:8px}.article-flow{display:grid;gap:18px}.article-flow article{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px}.article-flow h2,.article-flow h3{margin-top:0;color:var(--ink)}.article-flow p:last-child{margin-bottom:0}.note{border-left:4px solid var(--blue);background:#fff;padding:16px 18px;border-radius:0 14px 14px 0;color:var(--muted)}.index-strip{display:flex;gap:10px;flex-wrap:wrap}.index-strip a{min-height:44px;display:inline-flex;align-items:center;padding:0 15px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--blue3);font-weight:800}.split-hero{display:grid;grid-template-columns:1.05fr .95fr;gap:20px;align-items:center}.phone-panel{background:#fff;border:1px solid var(--line);border-radius:20px;padding:22px;box-shadow:var(--shadow)}.phone-panel .media-frame{max-height:420px}.terms article{padding-bottom:18px;margin-bottom:18px;border-bottom:1px solid var(--line)}.terms article:last-child{border-bottom:0;margin-bottom:0}.faq-list{display:grid;gap:12px}.faq-item{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px}.faq-item h2{font-size:18px;margin:0 0 8px;color:var(--ink)}.faq-item p{margin:0;color:var(--muted)}.site-footer{background:var(--ink);color:#D6E4FF;padding:44px 0 calc(30px + env(safe-area-inset-bottom))}.footer-brand{display:flex;align-items:center;gap:14px;margin-bottom:26px}.footer-brand img{max-height:34px;max-width:160px;width:auto}.footer-brand strong{display:block;color:#fff;font-size:22px}.footer-brand span{display:block;color:#9fb7db;font-size:13px}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}.footer-grid h2{margin:0 0 10px;color:#fff;font-size:15px}.footer-grid a{display:flex;align-items:center;min-height:44px;color:#C7D8F4;padding:4px 0;font-size:14px}.footer-grid a:hover,.footer-grid a:focus-visible{color:#fff;text-decoration:underline}.footer-note{margin:28px 0 8px;color:#AFC2E1;max-width:900px}.copyright{margin:0;color:#8FA8CF;font-size:13px}.page-overlay{position:fixed;inset:0;background:rgba(11,18,32,.5);z-index:80;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.page-overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.mosaic-menu{position:fixed;inset:0;z-index:100;background:var(--bg);overflow:auto;transform:translateY(-18px);opacity:0;visibility:hidden;pointer-events:none;transition:.22s}.mosaic-menu.is-open{transform:translateY(0);opacity:1;visibility:visible;pointer-events:auto}.mosaic-shell{padding:18px 0 34px}.mosaic-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px}.mosaic-brand{display:flex;align-items:center;gap:12px;color:var(--ink);font-size:22px}.mosaic-brand img{max-height:32px;max-width:160px}.close-button{min-height:44px;padding:0 16px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--ink);font-weight:800;cursor:pointer}.mosaic-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.mosaic-grid section{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px}.mosaic-grid section:last-child{grid-column:span 3}.mosaic-grid h2{margin:0 0 12px;color:var(--blue);font-size:15px}.mosaic-grid a{display:block;padding:12px 0;border-top:1px solid rgba(37,99,235,.1)}.mosaic-grid a:first-of-type{border-top:0}.mosaic-grid strong{display:block;color:var(--ink)}.mosaic-grid span{display:block;color:var(--muted);font-size:13px;line-height:1.6}.search-layer{position:fixed;z-index:95;top:104px;left:50%;transform:translateX(-50%) translateY(-8px);width:min(calc(100% - 32px),780px);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.search-layer.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:translateX(-50%) translateY(0)}.search-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:20px;box-shadow:0 24px 60px rgba(11,18,32,.22)}.search-head{display:flex;align-items:center;justify-content:space-between;gap:12px;color:var(--ink);margin-bottom:14px}.search-box{display:block}.search-box input{width:100%;height:52px;border:1px solid rgba(37,99,235,.24);border-radius:14px;background:var(--bg);color:var(--ink);padding:0 16px;outline:none}.search-box input:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(96,165,250,.22)}.search-tip{margin:10px 0;color:var(--subtle);font-size:14px}.search-presets{display:flex;flex-wrap:wrap;gap:9px}.search-presets a{display:inline-flex;align-items:center;min-height:44px;padding:0 13px;border-radius:999px;background:var(--soft);color:var(--blue3);font-weight:800;font-size:14px}.mobile-nav{display:none}.content-table{width:100%;border-collapse:collapse;background:#fff;border-radius:16px;overflow:hidden;border:1px solid var(--line)}.content-table th,.content-table td{text-align:left;padding:14px 16px;border-bottom:1px solid var(--line);vertical-align:top}.content-table th{color:var(--ink);background:var(--soft)}.content-table tr:last-child td{border-bottom:0}.muted{color:var(--muted)}.kicker{color:var(--lime);font-weight:900;font-size:13px;letter-spacing:.08em}.wide-copy{max-width:920px}.quote-box{background:var(--soft);border-radius:16px;padding:18px;color:var(--text)}
@media(max-width:900px){.grid-4{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:1fr}.split-hero,.stacked-feature{grid-template-columns:1fr}.mosaic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.mosaic-grid section:last-child{grid-column:span 2}.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:720px){.shell{width:min(calc(100% - 32px),var(--max))}.tab-bar{display:none}.site-main{padding-top:116px;padding-bottom:76px}.status-bar,.status-inner{height:32px}.command-inner,.command-bar{height:60px}.command-inner{grid-template-columns:1fr auto 1fr;gap:8px}.command-logo img{max-width:120px}.app-link{padding:0 12px;font-size:14px}.grid-2,.grid-4{grid-template-columns:1fr}.number-item{grid-template-columns:58px 1fr}.number-item .num{font-size:30px}.file-row{grid-template-columns:38px 1fr}.file-row>span:last-child{grid-column:2}.mosaic-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.mosaic-grid section,.mosaic-grid section:last-child{grid-column:span 1;padding:14px}.mosaic-grid a{padding:10px 0}.search-layer{inset:0;transform:none;width:100%;background:var(--bg);padding:16px;overflow:auto}.search-layer.is-open{transform:none}.search-card{min-height:100%;border-radius:18px}.footer-grid{grid-template-columns:repeat(2,1fr);gap:18px}.site-footer{padding-bottom:calc(76px + env(safe-area-inset-bottom))}.mobile-nav{position:fixed;z-index:70;left:0;right:0;bottom:0;display:grid;grid-template-columns:repeat(5,1fr);height:calc(50px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:#fff;border-top:1px solid var(--line);box-shadow:0 -8px 24px rgba(11,18,32,.06)}.mobile-nav a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;min-width:0;color:var(--subtle);font-size:11px;line-height:1.1}.mobile-nav a span{font-size:18px}.mobile-nav a.is-current{color:var(--blue);font-weight:800}.page-hero h1,.cover-copy h1{font-size:28px}.padded{padding:18px}.cover-card{padding:20px}.section{margin-top:22px}.section-head{align-items:start;flex-direction:column}.media-frame{min-height:150px}.mosaic-shell{width:min(calc(100% - 24px),var(--max))}}
@media(max-width:420px){.mosaic-grid{grid-template-columns:1fr 1fr}.mosaic-grid section{padding:12px}.mosaic-grid span{font-size:12px}.app-link{padding:0 10px}.footer-grid{grid-template-columns:1fr 1fr}.file-row{padding:12px}.button{width:100%}}

.stream-list{display:grid;gap:12px}.stream-list article{background:#fff;border:1px solid var(--line);border-left:4px solid var(--blue);border-radius:14px;padding:18px 20px}.stream-list h2{margin:0 0 6px;color:var(--ink);font-size:18px}.stream-list p{margin:0;color:var(--muted)}