*{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}h1,h2,h3{color:#F5F7FA;line-height:1.38;margin:0 0 17px}h1{font-size:36px}h2{font-size:26px}h3{font-size:19px}p{margin:0 0 17px}a:focus-visible,button:focus-visible{outline:2px solid #8ED8FF;outline-offset:3px}.site-header{position:relative;z-index:30;background:rgba(8,10,13,.96);border-bottom:1px solid rgba(255,255,255,.09)}.topbar{height:74px;max-width:1200px;margin:auto;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;padding:0 24px}.menu-toggle{width:44px;height:44px;display:flex;flex-direction:column;gap:5px;align-items:center;justify-content:center;border:1px solid #2a3441;border-radius:10px;color:#fff;background:#12161C}.menu-toggle span{width:19px;height:2px;background:#F5F7FA}.brand{display:block;width:180px;max-width:100%;justify-self:center}.entry-btn{justify-self:end;display:inline-flex;align-items:center;justify-content:center;min-width:112px;height:44px;background:#5C7CFA;color:#fff;border-radius:999px;font-size:14px;padding:0 16px}.entry-btn:hover{background:#7390FF;color:#fff}.logo-media{height:36px;width:100%;position:relative;background:transparent}.logo-media img{width:100%;height:100%;object-fit:contain;display:block}.logo-media .media-placeholder{width:100%;height:100%;background:#171C23;border-radius:6px}.channel{height:46px;background:#0D1015;overflow-x:auto;scrollbar-width:thin}.channel-inner{display:flex;align-items:stretch;gap:34px;max-width:1200px;width:max-content;min-width:min(100%,1200px);height:46px;margin:auto;padding:0 24px}.channel a{display:flex;align-items:center;white-space:nowrap;font-size:14px;color:#C7CDD5;border-bottom:2px solid transparent}.channel a.active{color:#6EA8FF;border-bottom-color:#6EA8FF}.drawer-overlay{position:fixed;inset:0;background:rgba(0,0,0,.66);z-index:39;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s,visibility .2s}.drawer{position:fixed;top:0;left:0;height:100dvh;width:420px;max-width:86vw;background:#0D1015;z-index:40;transform:translateX(-102%);visibility:hidden;pointer-events:none;transition:transform .23s,visibility .23s;display:flex;flex-direction:column;box-shadow:12px 0 40px #0008}.drawer-open{overflow:hidden}.drawer-open .drawer-overlay{opacity:1;visibility:visible;pointer-events:auto}.drawer-open .drawer{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{height:74px;flex:none;padding:15px 22px;border-bottom:1px solid #ffffff19;display:flex;align-items:center;justify-content:space-between}.drawer-brand{width:160px}.drawer-close{font-size:30px;line-height:1;border:0;background:transparent;color:#fff}.drawer-body{overflow-y:auto;overscroll-behavior:contain;padding:16px 24px 36px}.menu-group{padding:6px 0 16px;border-bottom:1px solid #ffffff12}.menu-group h2{font-size:14px;color:#9098A3;margin:10px 0}.menu-items{display:grid;grid-template-columns:1fr 1fr;gap:4px 10px}.menu-items a{font-size:15px;padding:7px 10px;border-left:2px solid transparent}.menu-items a.active{border-color:#6EA8FF;color:#6EA8FF}.container{width:min(1200px,calc(100% - 48px));margin:auto}.hero{display:grid;grid-template-columns:54fr 46fr;gap:32px;align-items:center;padding:38px 0 34px}.hero h1{font-size:42px}.eyebrow{color:#8ED8FF;font-size:13px;letter-spacing:.09em;margin-bottom:12px}.lead{font-size:17px;color:#C7CDD5;max-width:760px}.hero .lead{max-width:590px}.subtle{color:#9098A3}.text-links{display:flex;gap:14px;flex-wrap:wrap;margin-top:17px}.text-links a{color:#8ED8FF;font-size:15px}.section{padding:38px 0 44px;border-top:1px solid rgba(255,255,255,.09)}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:22px}.section-heading h2{margin:0}.section-heading a{color:#8ED8FF;font-size:14px;white-space:nowrap}.panel{background:#0D1015;border:1px solid rgba(255,255,255,.09);border-radius:13px;padding:24px}.panel-soft{background:#12161C}.grid{display:grid;gap:20px}.grid2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid4{grid-template-columns:repeat(4,minmax(0,1fr))}.feature-split{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);gap:28px}.feature-split.reverse{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.feature-split>*{min-width:0}.card h3{margin:8px 0 10px}.card p{font-size:15px;color:#B8C0CA}.card a{color:#8ED8FF}.media{position:relative;width:100%;max-width:100%;overflow:hidden;border-radius:14px;background:#0D1015;border:1px solid #ffffff10}.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(145deg,#12161C,#171C23)}.media-wide{aspect-ratio:16/9}.media-square{aspect-ratio:1/1}.media-banner{aspect-ratio:16/7}.media-device{aspect-ratio:9/16;max-height:360px;width:min(100%,230px);margin:auto}.hero .media{height:310px;aspect-ratio:auto}.img-card .media{height:165px;aspect-ratio:auto}.img-card h3{font-size:17px;margin-top:12px}.img-card p{font-size:14px}.bullet-links{display:grid;gap:10px}.bullet-links a{display:block;padding:12px 14px;background:#12161C;border-radius:8px;border:1px solid #ffffff12}.numbered{counter-reset:item}.numbered>article{counter-increment:item;position:relative;padding:17px 10px 17px 56px;border-bottom:1px solid #ffffff16}.numbered>article:before{content:counter(item,decimal-leading-zero);position:absolute;left:0;top:16px;color:#6EA8FF;font-weight:bold}.numbered h3{margin:0 0 4px}.numbered p{margin:0;font-size:15px}.page-hero{padding:43px 0 28px;border-bottom:1px solid #ffffff19}.page-hero h1{margin-bottom:13px}.breadcrumbs{color:#9098A3;font-size:13px;margin-bottom:16px}.breadcrumbs a{color:#8ED8FF}.article-layout{display:grid;grid-template-columns:minmax(0,820px) minmax(225px,1fr);gap:36px;padding:34px 0 55px;align-items:start}.prose{min-width:0}.prose h2{margin:34px 0 15px}.prose h2:first-child{margin-top:0}.prose p{line-height:1.84}.aside{position:sticky;top:20px}.aside h2{font-size:19px}.aside a{display:block;border-bottom:1px solid #ffffff12;padding:10px 0;color:#8ED8FF;font-size:14px}.related{margin:36px 0 0;padding:20px;border:1px solid #ffffff1a;background:#12161C;border-radius:12px}.related h2{font-size:19px}.related a{display:inline-block;margin:4px 14px 4px 0;color:#8ED8FF}.mini-note{font-size:13px;color:#9098A3}.faq-item{border-bottom:1px solid #ffffff17;padding:20px 0}.faq-item h2{font-size:19px;margin-bottom:10px}.gallery-grid{padding:32px 0 55px}.site-footer{background:#050608;border-top:1px solid #ffffff14}.footer-grid{width:min(1200px,calc(100% - 48px));margin:auto;padding:45px 0;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:35px}.footer-grid h2{font-size:17px}.footer-grid a{display:block;font-size:14px;line-height:2}.footer-intro .logo-media{width:170px}.footer-intro p{font-size:14px;margin-top:18px}.footer-bottom{border-top:1px solid #ffffff17;text-align:center;padding:18px 24px 25px;font-size:13px;color:#9098A3}.footer-bottom p{margin:4px 0 0}#back-top{display:none;position:fixed;right:18px;bottom:20px;border:1px solid #ffffff22;background:#171C23;color:#fff;border-radius:50%;width:42px;height:42px;z-index:25}#back-top.visible{display:block}@media(max-width:980px){.grid4{grid-template-columns:repeat(2,minmax(0,1fr))}.grid3{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.article-layout{grid-template-columns:minmax(0,1fr) 225px;gap:25px}}@media(max-width:700px){body{font-size:15px}.container,.footer-grid{width:calc(100% - 32px)}.topbar{height:64px;padding:0 16px;grid-template-columns:minmax(40px,1fr) minmax(0,1fr) minmax(98px,1fr)}.menu-toggle{width:40px;height:40px}.brand{width:100%;max-width:126px}.logo-media{height:28px}.entry-btn{height:40px;min-width:98px;padding:0 10px;font-size:13px}.channel-inner{padding:0 16px;gap:24px}.drawer-head{height:64px}.hero{display:flex;flex-direction:column-reverse;align-items:stretch;gap:18px;padding:26px 0}.hero .media{height:200px}.hero h1{font-size:29px}.page-hero{padding:30px 0 24px}.page-hero h1{font-size:27px}h2{font-size:21px}.section{padding:27px 0 30px}.grid3{grid-template-columns:repeat(2,minmax(0,1fr))}.grid2,.feature-split,.feature-split.reverse,.article-layout{grid-template-columns:minmax(0,1fr)}.article-layout{padding:25px 0 34px}.aside{position:static}.panel{padding:18px}.img-card .media{height:140px}.media-banner{max-height:145px}.footer-grid{gap:24px}.drawer{width:min(86vw,340px)}}@media(max-width:350px){.grid3,.grid4{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.img-card .media{height:125px}.img-card h3{font-size:15px}.img-card p{font-size:13px}.panel{padding:14px}.entry-btn{min-width:93px}.topbar{padding:0 12px}.hero h1{font-size:28px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.drawer,.drawer-overlay{transition:none}}