*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#080A0D;color:#C7CDD5;font:16px/1.8 Arial,"PingFang SC","Microsoft YaHei",sans-serif}a{color:inherit;text-decoration:none}a:hover{color:#8ED8FF}button{font:inherit;cursor:pointer}img{max-width:100%}.wrap{max-width:1200px;margin:0 auto;padding:0 24px}.site-header{height:74px;background:rgba(8,10,13,.96);border-bottom:1px solid rgba(255,255,255,.09);position:relative;z-index:30}.header-bar{height:100%;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;position:relative}.menu-toggle{width:44px;height:44px;background:#12161C;border:1px solid rgba(255,255,255,.16);border-radius:11px;display:flex;flex-direction:column;gap:5px;justify-content:center;align-items:center;justify-self:start}.menu-toggle span{height:2px;width:19px;background:#F5F7FA;border-radius:2px}.brand{display:flex;justify-content:center;align-items:center;max-width:180px;height:48px}.brand img{height:36px;width:auto;object-fit:contain}.brand-text{font-size:26px;line-height:1;font-weight:900;color:#F5F7FA;white-space:nowrap}.brand-text span{color:#6EA8FF}.enter-button{justify-self:end;display:inline-flex;gap:8px;align-items:center;justify-content:center;height:44px;padding:0 23px;border-radius:999px;background:#5C7CFA;color:#fff!important;font-size:14px;font-weight:700;white-space:nowrap}.enter-button:hover{background:#7390FF}.channel-bar{height:46px;background:#0D1015;border-bottom:1px solid rgba(255,255,255,.09)}.channel-inner{display:flex;gap:33px;align-items:center;height:100%;white-space:nowrap;overflow-x:auto;scrollbar-width:thin;scrollbar-color:#303948 transparent}.channel-inner a{height:100%;display:inline-flex;align-items:center;flex:none;border-bottom:2px solid transparent;font-size:14px}.channel-inner a.active{color:#6EA8FF;border-bottom-color:#6EA8FF}.menu-shade{position:fixed;inset:0;background:rgba(0,0,0,.68);z-index:40;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s,visibility .2s}.site-drawer{position:fixed;top:0;bottom:0;left:0;width:420px;max-width:86vw;background:#0D1015;z-index:50;transform:translateX(-102%);visibility:hidden;pointer-events:none;transition:transform .24s,visibility .24s;display:flex;flex-direction:column;box-shadow:18px 0 48px rgba(0,0,0,.4)}.drawer-open{overflow:hidden}.drawer-open .menu-shade{opacity:1;visibility:visible;pointer-events:auto}.drawer-open .site-drawer{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{padding:18px 24px;border-bottom:1px solid rgba(255,255,255,.1);display:flex;align-items:center;justify-content:space-between;min-height:76px}.drawer-brand{font-size:22px;color:#F5F7FA;font-weight:800}.drawer-brand img{max-height:36px;width:auto;object-fit:contain}.drawer-close{border:1px solid rgba(255,255,255,.14);border-radius:9px;color:#fff;background:#171C23;width:38px;height:38px;font-size:26px;line-height:1}.drawer-body{overflow-y:auto;padding:6px 24px 32px}.drawer-body section{padding-top:16px}.drawer-body h2{font-size:14px;letter-spacing:.09em;color:#9098A3;margin:5px 0 9px}.drawer-links{display:grid;grid-template-columns:1fr 1fr;gap:3px 9px}.drawer-links a{padding:8px 11px;border-left:2px solid transparent;border-radius:4px;font-size:15px}.drawer-links a.current{color:#6EA8FF;border-left-color:#6EA8FF;background:#171C23}.site-footer{margin-top:64px;background:#050608;border-top:1px solid rgba(255,255,255,.09)}.footer-grid{padding-top:45px;padding-bottom:30px;display:grid;grid-template-columns:1.7fr repeat(3,1fr);gap:40px}.footer-grid h2{font-size:16px;color:#F5F7FA;margin:0 0 14px}.footer-grid a:not(.footer-logo){display:block;font-size:14px;margin:7px 0}.footer-logo{display:inline-block;color:white;font-weight:800;font-size:25px}.footer-logo img{max-height:40px;object-fit:contain}.footer-grid p{font-size:14px;color:#9098A3;max-width:340px}.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-top:18px;padding-bottom:24px;border-top:1px solid rgba(255,255,255,.09);color:#9098A3;font-size:13px}.back-top{position:fixed;right:22px;bottom:22px;border:1px solid rgba(255,255,255,.15);border-radius:10px;background:#1B2129;color:#F5F7FA;width:42px;height:42px;z-index:20;opacity:0;pointer-events:none;transition:opacity .2s}.back-top.visible{opacity:1;pointer-events:auto}.eyebrow{display:inline-block;color:#8ED8FF;font-size:12px;letter-spacing:.12em;font-weight:700;text-transform:uppercase}.page-intro{padding-top:55px;padding-bottom:23px}.page-intro h1,.hero h1{color:#F5F7FA;line-height:1.38;letter-spacing:-.03em}.page-intro h1{font-size:34px;margin:13px 0 16px}.lede{font-size:17px;max-width:820px;color:#C7CDD5}.section{margin-top:48px}.section-title{font-size:26px;line-height:1.4;color:#F5F7FA;margin:0 0 20px}.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:15px}.section-head a{font-size:14px;color:#8ED8FF;white-space:nowrap}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 275px;gap:45px;align-items:start}.article{max-width:840px}.article section{margin-bottom:37px}.article h2{font-size:25px;line-height:1.4;color:#F5F7FA;margin:0 0 13px}.article h3{font-size:19px;color:#F5F7FA}.article p{margin:0 0 16px;line-height:1.83}.aside-panel,.panel,.info-card{background:#12161C;border:1px solid rgba(255,255,255,.09);border-radius:13px}.aside-panel{padding:20px;position:sticky;top:22px}.aside-panel h2{color:#F5F7FA;font-size:17px;margin:0 0 13px}.aside-panel a{display:block;padding:10px 0;border-bottom:1px solid rgba(255,255,255,.08);font-size:14px}.aside-panel a:last-child{border:0}.related{margin:48px 0;padding:24px 0;border-top:1px solid rgba(255,255,255,.13)}.related h2{color:#F5F7FA;font-size:21px}.related-items{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.related-items a{background:#12161C;border:1px solid rgba(255,255,255,.09);padding:14px;border-radius:9px;font-size:14px;display:flex;justify-content:space-between}.related-items span{color:#6EA8FF}.hero{margin-top:34px;display:grid;grid-template-columns:54% 46%;align-items:center;gap:0;background:#0D1015;border:1px solid rgba(255,255,255,.09);border-radius:14px;overflow:hidden}.hero-copy{padding:34px 36px;min-width:0}.hero h1{font-size:42px;margin:12px 0 19px}.hero p{margin:0 0 20px;line-height:1.8}.text-links{display:flex;gap:20px;flex-wrap:wrap;font-size:14px;font-weight:700}.text-links a{color:#8ED8FF}.hero-media{padding:15px}.hero-media .media{height:304px}.media{position:relative;width:100%;max-width:100%;overflow:hidden;border-radius:13px;background:#0D1015}.media>img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;object-position:center center;display:block}.media-placeholder{position:absolute;inset:0;background:linear-gradient(145deg,#131a24,#0d1015 65%,#192131)}.media-square{aspect-ratio:1/1}.media-wide{aspect-ratio:16/9}.media-banner{aspect-ratio:16/7}.media-device{aspect-ratio:9/16}.media-compact{height:170px}.topic-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.info-card{padding:23px;min-width:0}.info-card h3{font-size:19px;color:#F5F7FA;margin:0 0 10px}.info-card p{margin:0 0 12px;font-size:15px}.info-card a,.feature-link{color:#8ED8FF;font-size:14px}.split{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:30px}.split.equal{grid-template-columns:repeat(2,minmax(0,1fr))}.panel{padding:26px}.panel h3{color:#F5F7FA;font-size:21px;margin:0 0 13px}.panel p{margin:0 0 13px}.link-stack{display:flex;flex-direction:column}.link-stack a{padding:13px 0;border-bottom:1px solid rgba(255,255,255,.1)}.link-stack a:last-child{border:0}.visual-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:19px}.visual-grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.visual-card{min-width:0}.visual-card .media{height:168px}.visual-card h3{color:#F5F7FA;font-size:17px;margin:11px 0 5px}.visual-card p{font-size:14px;margin:0;color:#9098A3}.number-list{counter-reset:items;list-style:none;padding:0;margin:0}.number-list li{display:grid;grid-template-columns:44px minmax(0,1fr);gap:15px;padding:17px 0;border-bottom:1px solid rgba(255,255,255,.1)}.number-list li::before{counter-increment:items;content:counter(items,decimal-leading-zero);color:#6EA8FF;font-weight:700;font-size:18px}.number-list strong{color:#F5F7FA;display:block;font-size:17px}.number-list p{margin:4px 0 0;font-size:14px}.section-note{color:#9098A3;font-size:14px}.wide-banner .media{max-height:260px}.mobile-split{display:grid;grid-template-columns:minmax(0,1.8fr) minmax(0,.75fr);align-items:center;gap:40px}.mobile-split .media{max-height:360px;max-width:230px;margin:auto}.notice{border-left:3px solid #6EA8FF;background:#12161C;padding:17px 20px;border-radius:0 10px 10px 0}.faq-item{border-bottom:1px solid rgba(255,255,255,.12);padding:19px 0}.faq-item h2{font-size:19px!important;margin:0 0 8px!important}.faq-item p{margin:0!important}.inner-media{max-width:600px;margin:12px 0 25px}.article .inner-media .media{max-height:245px}.gallery-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:25px}.gallery-grid .media{height:180px}.gallery-grid h2{color:#F5F7FA;font-size:19px;margin:11px 0 5px}.gallery-grid p{font-size:14px;margin:0}.category-index{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}.pill-label{font-size:12px;color:#6EA8FF;letter-spacing:.12em}.rule-banner{background:#12161C;border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:20px;margin-top:28px}.muted{color:#9098A3}@media(max-width:980px){.wrap{padding:0 20px}.channel-inner{gap:25px}.article-layout{grid-template-columns:minmax(0,1fr) 220px;gap:25px}.visual-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-grid{gap:20px}}@media(max-width:767px){.wrap{padding:0 16px}.site-header{height:64px}.menu-toggle{height:40px;width:40px}.brand{height:40px;max-width:118px}.brand img{max-width:118px;height:28px}.brand-text{font-size:20px}.enter-button{height:40px;padding:0 12px;font-size:12px;gap:4px}.channel-bar{height:45px}.channel-inner{gap:24px}.hero{display:flex;flex-direction:column-reverse;margin-top:20px}.hero-copy{padding:18px 18px 23px}.hero h1{font-size:29px}.hero-media{width:100%;padding:12px}.hero-media .media{height:204px}.page-intro{padding-top:31px}.page-intro h1{font-size:27px}.lede{font-size:16px}.section{margin-top:33px}.section-title{font-size:22px}.topic-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.info-card{padding:15px}.info-card h3{font-size:17px}.info-card p{font-size:14px}.split,.split.equal,.article-layout,.mobile-split{grid-template-columns:1fr;gap:18px}.article h2{font-size:21px}.article section{margin-bottom:27px}.aside-panel{position:static}.visual-grid.three,.gallery-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.visual-card .media,.gallery-grid .media{height:145px}.mobile-split .media{max-height:325px}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:25px;padding-top:34px}.footer-intro{grid-column:1/-1}.footer-bottom{display:block}.footer-bottom span{display:block;margin-bottom:8px}.related-items{grid-template-columns:1fr 1fr}.panel{padding:19px}.site-footer{margin-top:43px}}@media(max-width:390px){.brand img{max-width:100px}.brand-text{font-size:18px}.enter-button{padding:0 9px;font-size:11px}.enter-button span{display:none}.hero h1{font-size:28px}.topic-grid{grid-template-columns:1fr}.category-index{grid-template-columns:1fr}.related-items{grid-template-columns:1fr}.visual-card .media{height:125px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important}}