*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#080A0D;color:#C7CDD5;font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.8}a{color:inherit;text-decoration:none}a:hover{color:#8ED8FF}button{font:inherit;cursor:pointer}img{max-width:100%}.shell{width:min(1200px,calc(100% - 48px));margin:0 auto}.site-header{position:relative;z-index:25;background:rgba(8,10,13,.96);border-bottom:1px solid rgba(255,255,255,.09)}.topbar{height:74px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:10px}.menu-trigger{width:44px;height:44px;background:#12161C;border:1px solid rgba(255,255,255,.16);border-radius:10px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px}.menu-trigger span{width:19px;height:2px;background:#F5F7FA;border-radius:2px}.brand{display:flex;justify-content:center;align-items:center;min-width:0}.brand img{height:36px;width:auto;max-width:160px;object-fit:contain}.brand strong{font-size:24px;color:#F5F7FA;white-space:nowrap}.brand strong span{color:#6EA8FF}.entry-button{justify-self:end;background:#5C7CFA;color:white;border-radius:999px;height:44px;display:flex;align-items:center;padding:0 20px;font-size:14px;font-weight:bold;white-space:nowrap}.entry-button:hover{color:white;background:#7390FF}.channel{background:#0D1015}.channel-inner{display:flex;gap:33px;overflow-x:auto;scrollbar-width:none;white-space:nowrap}.channel-inner::-webkit-scrollbar{display:none}.channel a{height:46px;display:inline-flex;align-items:center;border-bottom:2px solid transparent;font-size:14px}.channel a[aria-current=page],.channel a:hover{color:#6EA8FF;border-color:#6EA8FF}.drawer-shade{position:fixed;inset:0;background:rgba(0,0,0,.66);z-index:40;opacity:0;transition:opacity .2s;visibility:hidden;pointer-events:none}.drawer{position:fixed;z-index:41;inset:0 auto 0 0;width:420px;max-width:86vw;overflow-y:auto;background:#0D1015;border-right:1px solid rgba(255,255,255,.16);padding:22px 28px 40px;transform:translateX(-101%);visibility:hidden;pointer-events:none;transition:transform .22s,visibility .22s}.drawer-open .drawer,.drawer-open .drawer-shade{visibility:visible;pointer-events:auto}.drawer-open .drawer{transform:translateX(0)}.drawer-open .drawer-shade{opacity:1}.drawer-open{overflow:hidden}.drawer-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.drawer-logo{font-weight:800;color:#F5F7FA}.drawer-logo img{height:36px;width:auto;object-fit:contain}.drawer-close{background:#171C23;color:white;border:1px solid rgba(255,255,255,.16);border-radius:9px;width:40px;height:40px;font-size:25px}.drawer-group{border-top:1px solid rgba(255,255,255,.09);padding:14px 0}.drawer-group h2{color:#9098A3;font-size:13px;margin:0 0 8px}.drawer-links{display:grid;grid-template-columns:1fr 1fr;gap:3px 12px}.drawer-links a{font-size:14px;padding:6px 8px;border-left:2px solid transparent}.drawer-links a[aria-current=page]{color:#6EA8FF;border-color:#6EA8FF}.page-hero{padding:55px 0 32px;border-bottom:1px solid rgba(255,255,255,.09)}.eyebrow{color:#6EA8FF;font-size:13px;font-weight:700;letter-spacing:.09em}.page-hero h1,.hero h1{color:#F5F7FA;line-height:1.33;letter-spacing:-.025em;margin:10px 0 16px}.page-hero h1{font-size:34px}.page-hero p{font-size:17px;max-width:820px;margin:0;color:#C7CDD5}.section{margin:44px 0}.section h2{font-size:26px;color:#F5F7FA;line-height:1.35;margin:0 0 16px}.section h3{font-size:19px;color:#F5F7FA;margin:12px 0}.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:18px}.section-head h2{margin:0}.section-head a,.related a,.text-link{color:#8ED8FF}.article{max-width:850px}.article p,.panel p{font-size:16px;line-height:1.82;margin:0 0 16px}.article-section{padding:0 0 22px;margin-bottom:27px;border-bottom:1px solid rgba(255,255,255,.09)}.article-section h2{margin-bottom:15px}.panel,.card,.feature{background:#12161C;border:1px solid rgba(255,255,255,.09);border-radius:14px;padding:22px}.panel h3,.card h3,.feature h3{margin:0 0 9px}.card p{color:#C7CDD5;margin:0 0 12px}.grid{display:grid;gap:20px}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}.split{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(240px,.7fr);gap:32px}.split-equal{grid-template-columns:repeat(2,minmax(0,1fr))}.link-stack{display:flex;flex-direction:column;gap:0}.link-stack a{padding:13px 0;border-bottom:1px solid rgba(255,255,255,.09)}.related{display:flex;gap:12px;flex-wrap:wrap;margin:28px 0 45px}.related a{border:1px solid rgba(255,255,255,.16);padding:8px 14px;border-radius:8px;font-size:14px}.media{position:relative;width:100%;overflow:hidden;border-radius:14px;background:#0D1015;border:1px solid rgba(255,255,255,.09)}.media img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;object-position:center;display:block}.media-placeholder{position:absolute;inset:0;background:linear-gradient(135deg,#171C23,#0D1015 70%)}.media-square{aspect-ratio:1}.media-wide{aspect-ratio:16/9}.media-banner{aspect-ratio:16/7}.media-device{aspect-ratio:9/16;max-height:360px;width:auto;max-width:100%;margin:auto}.visual-card{min-width:0}.visual-card .media{height:170px;aspect-ratio:auto}.visual-card h3{font-size:17px;line-height:1.4;margin:13px 0 5px}.visual-card p{font-size:14px;margin:0;color:#9098A3}.visual-grid .media{height:170px;aspect-ratio:auto}.visual-grid>.visual-card{min-width:0}.hero{display:grid;grid-template-columns:54fr 46fr;gap:30px;align-items:center;padding:46px 0 22px}.hero h1{font-size:42px}.hero p{font-size:17px}.hero .media{height:315px;aspect-ratio:auto}.inline-links{display:flex;gap:22px;flex-wrap:wrap;margin-top:22px;color:#8ED8FF}.info-list{counter-reset:note}.info-row{counter-increment:note;padding:17px 0;border-bottom:1px solid rgba(255,255,255,.09);display:grid;grid-template-columns:42px 1fr;gap:12px}.info-row:before{content:counter(note,decimal-leading-zero);color:#6EA8FF;font-weight:700}.info-row h3{margin:0 0 3px;font-size:18px;color:#F5F7FA}.info-row p{margin:0 0 5px}.smallprint{font-size:13px;color:#9098A3}.alert-note{border-left:3px solid #6EA8FF;padding:16px 20px;background:#12161C;border-radius:0 10px 10px 0}.faq-item{border-bottom:1px solid rgba(255,255,255,.09);padding:18px 0}.faq-item h2{font-size:19px;margin:0 0 8px}.faq-item p{margin:0}.footer{margin-top:48px;background:#050608;border-top:1px solid rgba(255,255,255,.09)}.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:36px;padding:50px 0}.footer h2{font-size:15px;color:#F5F7FA;margin:0 0 18px}.footer p{font-size:14px;color:#9098A3}.footer a{display:block;font-size:14px;margin:8px 0}.footer-brand img{height:36px;width:auto;object-fit:contain}.footer-bottom{padding:20px 0 26px;border-top:1px solid rgba(255,255,255,.09);font-size:13px;color:#9098A3;display:flex;gap:20px;flex-wrap:wrap}#back-to-top{position:fixed;right:20px;bottom:20px;background:#171C23;color:white;border:1px solid rgba(255,255,255,.16);border-radius:10px;width:40px;height:40px;opacity:0;pointer-events:none;transition:opacity .2s}#back-to-top.visible{opacity:1;pointer-events:auto}body:before{content:"";position:absolute;z-index:-1;top:125px;left:0;right:0;height:400px;background:radial-gradient(ellipse at 75% 0,rgba(92,124,250,.11),transparent 60%);pointer-events:none}@media(max-width:980px){.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.split{gap:22px}}@media(max-width:767px){.shell{width:calc(100% - 32px)}.topbar{height:64px}.menu-trigger{width:40px;height:40px}.brand img{height:28px;max-width:120px}.brand strong{font-size:19px}.entry-button{height:40px;padding:0 13px;font-size:12px}.channel-inner{gap:24px}.channel a{height:44px}.page-hero{padding:34px 0 23px}.page-hero h1{font-size:27px}.page-hero p{font-size:15px}.hero{display:flex;flex-direction:column-reverse;align-items:stretch;gap:22px;padding:25px 0}.hero h1{font-size:30px}.hero p{font-size:15px}.hero .media{height:210px}.section{margin:32px 0}.section h2{font-size:22px}.grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-2,.split,.split-equal{grid-template-columns:1fr}.article p,.panel p{font-size:15px}.visual-card .media,.visual-grid .media{height:150px}.visual-card h3{font-size:16px}.panel,.card,.feature{padding:17px}.footer-grid{gap:20px;padding:34px 0}.drawer{padding:17px 18px 30px}.section-head{align-items:center}.section-head a{font-size:13px}}@media(max-width:359px){.brand img{max-width:100px}.brand strong{font-size:17px}.entry-button{padding:0 10px}.grid-3{grid-template-columns:1fr 1fr}.visual-card .media,.visual-grid .media{height:125px}.footer-grid{grid-template-columns:1fr 1fr;gap:14px}.hero h1{font-size:28px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}