:root{--bg:#F3F6F9;--surface:#FFFFFF;--soft:#E8EEF5;--title:#0B1220;--text:#1E293B;--muted:#475569;--aux:#64748B;--blue:#2563EB;--blue-light:#60A5FA;--blue-deep:#1D4ED8;--lime:#65A30D;--slate:#334155;--border:rgba(37,99,235,.16);--shadow:0 14px 36px rgba(11,18,32,.08);--max:1180px}
*{box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:hidden}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;line-height:1.72;overflow-x:hidden;padding-top:120px}
body.is-locked{overflow:hidden}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{cursor:pointer}
img{display:block;max-width:100%}
.wrap{width:min(calc(100% - 32px),var(--max));margin:0 auto}
.site-header{position:fixed;left:0;right:0;top:0;z-index:1000;background:var(--surface)}
.signal-bar{height:18px;background:var(--slate);color:#fff;font-size:11px;line-height:18px}
.signal-inner{display:flex;justify-content:space-between;align-items:center;height:18px}
.signal-brand{font-weight:700;letter-spacing:.06em}
.signal-search{height:18px;border:0;background:transparent;color:#fff;padding:0 2px;font-size:11px;position:relative}.signal-search:before{content:"";position:absolute;left:-10px;right:-10px;top:-13px;bottom:-13px}
.machine-bar{height:62px;background:#fff;border-bottom:1px solid var(--border)}
.machine-inner{height:100%;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px}
.brand-link{justify-self:start;min-height:44px;display:flex;align-items:center}
.brand-mark{height:30px;width:auto;max-width:160px;object-fit:contain}
.brand-word{font-size:24px;font-weight:900;letter-spacing:-.03em;color:var(--title)}
.drawer-trigger{justify-self:center;min-width:92px;min-height:44px;border:1px solid var(--border);background:#fff;color:var(--title);border-radius:12px;font-weight:800}
.drawer-trigger:hover,.drawer-trigger:focus-visible{border-color:var(--blue);color:var(--blue);outline:3px solid rgba(37,99,235,.12)}
.app-link{justify-self:end;min-height:44px;display:inline-flex;align-items:center;padding:0 18px;border-radius:12px;background:linear-gradient(135deg,#60A5FA 0%,#2563EB 52%,#1D4ED8 100%);color:#fff;font-weight:800}
.tab-bar{height:40px;background:#F8FAFC;border-bottom:1px solid var(--border)}
.tab-inner{display:flex;align-items:center;height:100%;gap:8px}
.tab-inner a{height:28px;display:inline-flex;align-items:center;padding:0 12px;border-radius:7px;color:var(--muted);font-size:14px;font-weight:700}
.tab-inner a:hover,.tab-inner a:focus-visible{color:var(--blue);outline:2px solid rgba(37,99,235,.16)}
.tab-inner a.is-current{background:var(--blue);color:#fff}
main{min-height:60vh}
.hero,.page-hero{padding:28px 0 12px}
.hero .wrap,.page-hero .wrap{display:grid;gap:20px}
.media-slot{margin:0;background:linear-gradient(135deg,#fff,#E8EEF5);border:1px solid var(--border);border-radius:16px;min-height:180px;display:flex;align-items:center;justify-content:center;overflow:hidden}
.media-slot img{width:100%;height:100%;max-height:240px;object-fit:contain;object-position:center}
.cover-slot{min-height:220px;max-height:300px}
.cover-slot img{width:100%;height:100%;max-height:300px;object-fit:contain;object-position:center}
.phone-slot{min-height:320px;max-height:420px;background:#fff}
.phone-slot img{height:100%;max-height:420px;width:auto;max-width:100%;object-fit:contain}
.eyebrow{margin:0;color:var(--blue);font-size:13px;font-weight:900;letter-spacing:.12em;text-transform:uppercase}
h1{margin:0;color:var(--title);font-size:clamp(28px,4vw,32px);line-height:1.18;letter-spacing:-.035em}
h2{color:var(--title);line-height:1.25}
.lead{max-width:820px;margin:0;color:var(--muted);font-size:16px}
.hero-actions{display:flex;flex-wrap:wrap;gap:10px}
.btn{min-height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0 18px;border-radius:12px;font-weight:800;border:1px solid transparent}
.btn-primary{background:linear-gradient(135deg,#60A5FA 0%,#2563EB 52%,#1D4ED8 100%);color:#fff}
.btn-secondary{background:#fff;color:var(--blue);border-color:var(--border)}
.btn:hover,.btn:focus-visible{transform:translateY(-1px);outline:3px solid rgba(37,99,235,.14)}
.section{padding:30px 0}
.section + .section{border-top:1px solid rgba(37,99,235,.08)}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:18px}
.section-head h2{margin:0;font-size:24px}
.section-head p{margin:0;color:var(--aux);max-width:620px}
.key-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.key-card,.content-card,.number-card,.status-card,.topic-card,.article-card,.faq-item{background:#fff;border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow)}
.key-card{padding:16px;min-height:126px;display:flex;flex-direction:column;gap:8px}
.dot{width:9px;height:9px;border-radius:50%;background:var(--blue)}
.key-card:nth-child(even) .dot{background:var(--lime)}
.key-card h3{margin:0;color:var(--title);font-size:17px}
.key-card p{margin:0;color:var(--muted);font-size:14px;flex:1}
.key-card a{color:var(--blue);font-weight:800;font-size:14px}
.feature-split{display:grid;grid-template-columns:1.08fr .92fr;gap:20px;align-items:start}
.feature-copy{background:#fff;border:1px solid var(--border);border-radius:16px;padding:22px;box-shadow:var(--shadow)}
.feature-copy h2,.feature-copy h3{margin-top:0}
.feature-copy p:last-child{margin-bottom:0}
.number-list{display:grid;gap:10px;margin-top:18px}
.number-row{display:grid;grid-template-columns:56px 1fr auto;gap:14px;align-items:center;padding:12px 0;border-top:1px solid var(--border)}
.number-row strong{font-size:24px;color:var(--blue);font-variant-numeric:tabular-nums}
.number-row span{color:var(--muted);font-size:14px}
.number-row a{color:var(--blue);font-weight:800}
.cards-4{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.content-card{overflow:hidden}
.content-card .media-slot{border:0;border-radius:0;box-shadow:none;min-height:180px}
.content-card .card-body{padding:17px}
.content-card h3{margin:0 0 8px;color:var(--title)}
.content-card p{margin:0;color:var(--muted);font-size:14px}
.content-card a{display:inline-block;margin-top:12px;color:var(--blue);font-weight:800}
.split-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.topic-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.topic-card{padding:20px}
.topic-card b{display:block;color:var(--blue);font-size:13px;margin-bottom:8px}
.topic-card h3{margin:0 0 8px;font-size:18px}
.topic-card p{margin:0;color:var(--muted)}
.file-list{background:#fff;border:1px solid var(--border);border-radius:16px;overflow:hidden;box-shadow:var(--shadow)}
.file-item{display:grid;grid-template-columns:72px 1fr auto;gap:16px;align-items:center;padding:16px 18px;border-bottom:1px solid var(--border)}
.file-item:last-child{border-bottom:0}
.file-item strong{color:var(--title)}
.file-item p{margin:3px 0 0;color:var(--muted);font-size:14px}
.file-item .tag{color:var(--blue);font-size:13px;font-weight:800}
.big-numbers{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
.number-card{padding:20px;min-height:160px}
.number-card b{display:block;color:var(--blue);font-size:34px;line-height:1}
.number-card h3{margin:16px 0 8px;font-size:17px}
.number-card p{margin:0;color:var(--muted);font-size:14px}
.status-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.status-card{padding:18px;border-top:4px solid var(--blue)}
.status-card:nth-child(2){border-top-color:var(--blue-light)}
.status-card:nth-child(3){border-top-color:var(--lime)}
.status-card:nth-child(4){border-top-color:var(--slate)}
.status-card h3{margin:0 0 8px}.status-card p{margin:0;color:var(--muted)}
.step-list{counter-reset:step;display:grid;gap:12px}
.step{counter-increment:step;background:#fff;border:1px solid var(--border);border-radius:14px;padding:18px 18px 18px 72px;position:relative}
.step:before{content:counter(step,decimal-leading-zero);position:absolute;left:18px;top:18px;color:var(--blue);font-size:22px;font-weight:900}
.step h3{margin:0 0 6px}.step p{margin:0;color:var(--muted)}
.prose{background:#fff;border:1px solid var(--border);border-radius:16px;padding:clamp(20px,4vw,34px);box-shadow:var(--shadow)}
.prose h2{margin:1.4em 0 .55em;font-size:22px}.prose h2:first-child{margin-top:0}
.prose h3{margin:1.1em 0 .45em;color:var(--title)}
.prose p{margin:.8em 0;color:var(--text)}
.prose .note{padding:14px 16px;border-left:4px solid var(--blue);background:#F8FAFC;color:var(--muted)}
.article-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.article-card{padding:20px}.article-card h3{margin-top:0}.article-card p{color:var(--muted);margin-bottom:0}
.app-showcase{display:grid;grid-template-columns:.72fr 1.28fr;gap:24px;align-items:center}
.badge-inline{display:flex;align-items:center;gap:12px;margin-top:18px}
.badge-inline img{width:58px;height:58px;object-fit:contain;border-radius:12px}
.badge-inline strong{display:block;color:var(--title)}
.badge-inline span{color:var(--muted);font-size:14px}
.policy-list{display:grid;gap:14px}
.policy-item{background:#fff;border:1px solid var(--border);border-radius:14px;padding:20px}
.policy-item h2,.policy-item h3{margin-top:0}.policy-item p:last-child{margin-bottom:0}
.faq-list{display:grid;gap:12px}
.faq-item{padding:18px 20px}.faq-item h2,.faq-item h3{margin:0 0 8px;font-size:18px}.faq-item p{margin:0;color:var(--muted)}
.link-arrow{color:var(--blue);font-weight:800}
.site-footer{background:#0B1220;color:#D6E4FF;margin-top:38px;padding:34px 0 calc(20px + env(safe-area-inset-bottom))}
.footer-brand-row{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-bottom:24px;border-bottom:1px solid rgba(214,228,255,.12)}
.footer-brand{display:flex;align-items:center;gap:12px;min-width:200px}.footer-mark{height:30px;width:auto;object-fit:contain}.footer-brand strong{display:block;color:#fff}.footer-brand span{display:block;font-size:12px;color:#AFC7F5}.footer-brand-row p{max-width:680px;margin:0;color:#AFC7F5;font-size:13px}
.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:26px 0}.footer-grid h2{color:#fff;font-size:14px;margin:0 0 12px}.footer-grid a{display:block;color:#B9CCEA;font-size:13px;margin:8px 0}.footer-grid a:hover,.footer-grid a:focus-visible{color:#fff;text-decoration:underline}
.footer-bottom{border-top:1px solid rgba(214,228,255,.12);padding-top:18px;display:flex;gap:18px;flex-wrap:wrap;font-size:12px;color:#8FA9D1}.footer-bottom a{color:#B9CCEA}
.page-shade{position:fixed;inset:0;background:rgba(11,18,32,.48);z-index:1001;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}
.page-shade.is-open{opacity:1;visibility:visible;pointer-events:auto}
.site-drawer{position:fixed;top:0;right:0;bottom:0;width:min(390px,86vw);background:#F8FAFC;z-index:1003;transform:translateX(102%);visibility:hidden;pointer-events:none;transition:transform .24s ease,visibility .24s;box-shadow:-20px 0 50px rgba(11,18,32,.18);display:flex;flex-direction:column}
.site-drawer.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}
.drawer-head{height:72px;display:flex;align-items:center;justify-content:space-between;padding:0 18px;background:#fff;border-bottom:1px solid var(--border)}
.drawer-brand{display:flex;align-items:center;gap:10px}.drawer-brand img{height:28px;width:auto;max-width:130px;object-fit:contain}.drawer-brand strong{color:var(--title)}
.icon-close{width:44px;height:44px;border:0;border-radius:10px;background:var(--soft);color:var(--title);font-size:26px;line-height:1}
.icon-close:hover,.icon-close:focus-visible{outline:3px solid rgba(37,99,235,.14);color:var(--blue)}
.drawer-scroll{overflow-y:auto;padding:14px;overscroll-behavior:contain}
.drawer-card{background:#fff;border:1px solid var(--border);border-radius:14px;padding:14px;margin-bottom:12px}.drawer-card h2{font-size:13px;margin:0 0 8px;color:var(--aux);letter-spacing:.08em}.drawer-card a{display:grid;grid-template-columns:74px 1fr;gap:10px;padding:10px 6px;border-top:1px solid rgba(37,99,235,.08)}.drawer-card a:first-of-type{border-top:0}.drawer-card b{color:var(--title)}.drawer-card span{font-size:12px;color:var(--muted)}.drawer-card a:hover b,.drawer-card a:focus-visible b{color:var(--blue)}
.search-layer{position:fixed;left:0;right:0;top:80px;z-index:1002;visibility:hidden;opacity:0;pointer-events:none;transition:.18s;padding:14px 0}
.search-layer.is-open{visibility:visible;opacity:1;pointer-events:auto}
.search-card{width:min(calc(100% - 32px),760px);margin:0 auto;background:#fff;border:1px solid var(--border);border-radius:0;box-shadow:var(--shadow);padding:20px}
.search-head{display:flex;justify-content:space-between;align-items:center}.search-head h2{margin:0;font-size:20px}
.search-input-wrap{display:grid;gap:6px;margin:14px 0}.search-input-wrap span{font-size:12px;color:var(--aux);font-weight:800}.search-input-wrap input{width:100%;height:48px;border:1px solid var(--border);border-radius:12px;padding:0 14px;background:#F8FAFC;color:var(--title);outline:none}.search-input-wrap input:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(37,99,235,.12)}
.search-presets{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.search-presets a{display:flex;justify-content:space-between;gap:12px;padding:12px;border:1px solid var(--border);border-radius:12px;color:var(--title);font-weight:800}.search-presets a span{font-size:12px;color:var(--muted);font-weight:500}.search-presets a:hover,.search-presets a:focus-visible{border-color:var(--blue);outline:2px solid rgba(37,99,235,.12)}.search-note{color:var(--muted);font-size:14px}
.mobile-bottom{display:none}
@media (max-width:900px){.cards-4,.topic-grid{grid-template-columns:repeat(2,1fr)}.big-numbers{grid-template-columns:repeat(3,1fr)}.status-grid{grid-template-columns:repeat(2,1fr)}.feature-split,.app-showcase{grid-template-columns:1fr}.key-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:700px){
 body{padding-top:80px;padding-bottom:calc(50px + env(safe-area-inset-bottom))}.tab-bar{display:none}.machine-inner{grid-template-columns:1fr auto 1fr;gap:6px}.brand-mark{height:28px;max-width:112px}.brand-word{font-size:20px}.drawer-trigger{min-width:72px;padding:0 10px}.app-link{padding:0 11px;font-size:14px}.search-layer{top:0;bottom:0;background:var(--bg);padding:0;overflow:auto}.search-card{width:100%;min-height:100%;border:0;border-radius:0;box-shadow:none;padding:calc(20px + env(safe-area-inset-top)) 16px 24px}.search-presets{grid-template-columns:1fr}.mobile-bottom{position:fixed;display:grid;grid-template-columns:repeat(5,1fr);left:0;right:0;bottom:0;height:calc(50px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:#fff;border-top:1px solid var(--border);z-index:900}.mobile-bottom a{display:flex;align-items:center;justify-content:center;min-height:50px;font-size:12px;font-weight:800;color:var(--muted)}.mobile-bottom a.is-current{background:var(--blue);color:#fff}.footer-grid{grid-template-columns:repeat(2,1fr)}.footer-brand-row{align-items:flex-start;flex-direction:column}.hero,.page-hero{padding-top:20px}.section{padding:24px 0}.section-head{align-items:flex-start;flex-direction:column}.number-row{grid-template-columns:46px 1fr}.number-row a{grid-column:2}.file-item{grid-template-columns:60px 1fr}.file-item .tag{grid-column:2}.big-numbers{grid-template-columns:repeat(2,1fr)}.article-grid{grid-template-columns:1fr}}
@media (max-width:480px){.wrap{width:min(calc(100% - 32px),var(--max))}.key-grid,.cards-4,.topic-grid,.split-2,.status-grid,.big-numbers{grid-template-columns:1fr}.file-item{grid-template-columns:1fr;gap:4px}.file-item .tag{grid-column:auto}.hero-actions .btn{width:100%}.footer-grid{grid-template-columns:1fr 1fr}.drawer-card a{grid-template-columns:68px 1fr}.media-slot{min-height:150px}}