*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-width:320px;background:#080A0D;color:#C7CDD5;font:16px/1.8 Arial,"PingFang SC","Microsoft YaHei",sans-serif}body.drawer-open{overflow:hidden}a{color:#8ED8FF;text-decoration:none}a:hover{color:#fff}button{font:inherit;cursor:pointer}a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid #8ED8FF;outline-offset:4px}.wrap{width:min(100% - 48px,1200px);margin-inline:auto}.skip-link{position:absolute;left:12px;top:-80px;z-index:500;background:#5C7CFA;color:#fff;padding:8px 14px}.skip-link:focus{top:8px}.site-header{background:rgba(8,10,13,.96);border-bottom:1px solid rgba(255,255,255,.09)}.top-shell{height:76px;display:flex;align-items:center;gap:18px}.brand{display:flex;min-width:208px;align-items:center;gap:9px;color:#F5F7FA}.brand img{display:block;max-width:135px;width:auto;height:auto;max-height:36px;object-fit:contain}.brand-word,.footer-logo{font-size:24px;font-weight:800;letter-spacing:.03em;color:#F5F7FA}.brand-en{font-size:9px;color:#9098A3;max-width:95px;line-height:1.4;letter-spacing:.07em}.desktop-main{display:flex;align-items:center;justify-content:center;gap:clamp(10px,1.6vw,23px);flex:1;white-space:nowrap}.desktop-main a{font-size:14px;color:#C7CDD5;padding-block:9px;border-bottom:2px solid transparent}.desktop-main a.active{color:#6EA8FF;border-color:#6EA8FF}.entry{color:#fff!important;background:#5C7CFA;border-radius:999px;padding:9px 19px;font-size:14px;white-space:nowrap;font-weight:700}.entry:hover{background:#7390FF}.menu-toggle{display:none;border:1px solid #303946;background:#151A20;width:40px;height:40px;border-radius:10px;padding:10px;flex-shrink:0}.menu-toggle span{display:block;height:2px;margin:4px 0;background:#F5F7FA}.quick-band{background:#10141A;border-bottom:1px solid rgba(255,255,255,.09)}.quick-desktop{height:44px;display:flex;align-items:center;gap:30px}.quick-desktop a,.quick-mobile a{font-size:13px;color:#C7CDD5;white-space:nowrap}.quick-mobile{display:none}.page-shell{padding:30px 0 68px}.breadcrumbs{font-size:13px;color:#9098A3;display:flex;gap:11px;flex-wrap:wrap;margin-bottom:30px}.eyebrow{font-size:12px;letter-spacing:.13em;color:#8ED8FF;text-transform:uppercase;margin-bottom:12px}h1,h2,h3{line-height:1.38;color:#F5F7FA;margin:0 0 18px}h1{font-size:clamp(30px,3.2vw,42px);font-weight:750;letter-spacing:-.02em;max-width:850px}h2{font-size:26px}h3{font-size:19px}p{margin:0 0 17px}.lead{font-size:18px;line-height:1.85;max-width:830px;color:#C7CDD5}.article-intro{max-width:870px;margin:0 0 44px}.article-layout{display:grid;grid-template-columns:minmax(0,800px) minmax(190px,1fr);gap:50px;align-items:start}.article-body{min-width:0}.article-sidebar{position:sticky;top:30px;border-left:1px solid #323b45;padding:15px 0 12px 22px}.article-sidebar h2{font-size:16px}.article-sidebar a{display:block;font-size:14px;padding:8px 0;color:#AAB5C3}.prose-section{display:grid;grid-template-columns:50px minmax(0,1fr);gap:15px;padding:29px 0 34px;border-top:1px solid rgba(255,255,255,.09)}.prose-section h2{font-size:24px}.prose-section p{line-height:1.85}.section-number{color:#6EA8FF;letter-spacing:.06em;font-size:13px;padding-top:5px}.related{margin-top:42px;padding:25px;border:1px solid rgba(255,255,255,.09);background:#12161C;border-radius:13px}.related h2{font-size:20px}.related-links{display:flex;flex-wrap:wrap;gap:10px}.related-links a{border:1px solid #333c46;border-radius:7px;padding:7px 13px;font-size:14px}.media-frame{min-width:0;max-width:100%;margin:20px 0;border:1px solid rgba(255,255,255,.09);border-radius:13px;background:#0D1015;padding:12px;overflow:hidden}.media-frame img{display:block;width:100%;height:auto;max-width:100%;max-height:245px;object-fit:contain;object-position:center}.media-frame figcaption{font-size:13px;color:#9098A3;margin:10px 2px 0;line-height:1.6}.media-missing{height:160px;border:1px dashed rgba(255,255,255,.12);background:linear-gradient(140deg,#11161d,#181d25);border-radius:9px}.media-frame.hero-art img{max-height:310px}.media-frame.hero-art .media-missing{height:290px}.media-frame.device-figure{max-width:270px}.media-frame.device-figure img{max-height:340px}.media-frame.device-figure .media-missing{height:300px}.media-frame.gif-figure img{max-height:175px}.media-frame.gif-figure .media-missing{height:140px}.media-frame.small-figure img{max-height:180px}.media-frame.small-figure .media-missing{height:150px}.media-frame.gallery-figure img{max-height:260px}.media-frame.gallery-figure .media-missing{height:200px}.gallery-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.gallery-grid .media-frame{margin:0}.gallery-grid .media-frame img{max-height:205px}.gallery-grid figcaption{min-height:90px}.gallery-note{padding:14px 4px;font-size:14px}.editor-section{padding:42px 0;border-top:1px solid rgba(255,255,255,.09)}.editor-section .kicker{font-size:13px;color:#6EA8FF;margin-bottom:9px;letter-spacing:.12em}.editor-section>p{max-width:850px}.hero-home{display:grid;grid-template-columns:minmax(0,52fr) minmax(0,48fr);align-items:center;gap:30px;padding:24px 0 46px}.hero-home .lead{font-size:17px}.hero-home .media-frame{margin:0}.text-actions{display:flex;gap:22px;flex-wrap:wrap;margin-top:24px}.text-actions a{font-size:15px;border-bottom:1px solid #607aaf;padding-bottom:4px}.feature-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.feature{padding:23px;border:1px solid rgba(255,255,255,.09);border-radius:13px;background:#12161C}.feature h3{margin:0 0 12px}.feature p{font-size:15px}.split{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,.75fr);gap:46px;align-items:start}.split.equal{grid-template-columns:repeat(2,minmax(0,1fr))}.split.visual{grid-template-columns:minmax(0,.9fr) minmax(0,1.2fr);align-items:center}.index-items{counter-reset:items;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 28px}.index-item{padding:13px 0;border-bottom:1px solid #2b313a}.index-item:before{counter-increment:items;content:counter(items,decimal-leading-zero);font-size:12px;color:#6EA8FF;margin-right:12px}.index-item a{font-weight:700}.index-item p{margin:8px 0 0 32px;font-size:14px}.qa-list details{border-bottom:1px solid #323942;padding:16px 4px}.qa-list summary{cursor:pointer;font-weight:700;color:#F5F7FA}.qa-list p{margin:12px 0 2px;max-width:750px}.comparison{width:100%;border-collapse:collapse;margin:22px 0;color:#C7CDD5}.comparison th,.comparison td{text-align:left;border-bottom:1px solid #323942;padding:13px}.comparison th{color:#fff;background:#151a20}.site-footer{background:#050608;border-top:1px solid #252c34;padding:56px 0}.footer-grid{display:grid;grid-template-columns:1fr 2.2fr .9fr;gap:38px}.site-footer h2{font-size:17px}.site-footer h3{font-size:13px;color:#95a2b2;margin:5px 0}.site-footer p{font-size:14px;color:#929eaa}.footer-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.footer-group a,.footer-safety a{display:block;font-size:13px;padding:3px 0;color:#C7CDD5}.back-top{position:fixed;right:20px;bottom:18px;background:#202c40;border:1px solid #445a7c;border-radius:50%;color:#fff;width:42px;height:42px;opacity:0;pointer-events:none;transition:opacity .2s}.back-top.visible{opacity:1;pointer-events:auto}.drawer-overlay{position:fixed;inset:0;background:rgba(0,0,0,.7);z-index:98;visibility:hidden;pointer-events:none;opacity:0;transition:opacity .2s}.site-drawer{position:fixed;left:0;top:0;bottom:0;max-width:390px;width:min(86vw,390px);background:#0D1015;z-index:99;overflow:auto;padding:22px;transform:translateX(-102%);visibility:hidden;pointer-events:none;transition:transform .25s,visibility .25s}.drawer-overlay.open{visibility:visible;pointer-events:auto;opacity:1}.site-drawer.open{visibility:visible;pointer-events:auto;transform:translateX(0)}.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid #28313c}.drawer-brand{font-size:20px;font-weight:700;color:#fff}.drawer-brand small{display:block;font-size:10px;font-weight:400;color:#8e9bad}.close-button{font-size:28px;color:#fff;background:transparent;border:0}.drawer-group{margin-top:22px}.drawer-group h2{color:#8ED8FF;font-size:14px;margin-bottom:8px}.drawer-group a{display:block;color:#C7CDD5;border-bottom:1px solid #252d36;padding:6px 0;font-size:14px}@media(max-width:1100px){.desktop-main{gap:10px}.brand{min-width:175px}.brand-en{display:none}}@media(max-width:979px){.wrap{width:calc(100% - 40px)}.top-shell{height:64px;justify-content:space-between}.menu-toggle{display:block}.desktop-main{display:none}.brand{min-width:0;position:absolute;left:50%;transform:translateX(-50%)}.brand img{max-height:28px;max-width:126px}.brand-word{font-size:21px}.entry{font-size:13px;padding:7px 13px;margin-left:auto}.quick-desktop{display:none}.quick-mobile{display:flex;align-items:center;gap:25px;padding:10px 20px;overflow-x:auto;overscroll-behavior-x:contain;scrollbar-width:none;white-space:nowrap}.quick-mobile::-webkit-scrollbar{display:none}.article-layout{grid-template-columns:1fr}.article-sidebar{position:static;display:flex;flex-wrap:wrap;gap:9px}.article-sidebar h2{width:100%}.article-sidebar a{padding:3px 7px;border:1px solid #333c46;border-radius:6px}.footer-grid{grid-template-columns:1fr 2fr}.footer-safety{grid-column:1/-1}}@media(max-width:767px){.wrap{width:calc(100% - 32px)}.page-shell{padding:24px 0 46px}h1{font-size:27px}h2{font-size:21px}.prose-section h2{font-size:20px}.lead{font-size:16px}.prose-section{grid-template-columns:34px minmax(0,1fr);gap:8px}.hero-home,.split,.split.equal,.split.visual,.feature-grid{grid-template-columns:1fr}.hero-home{gap:20px}.hero-home .media-frame{order:-1}.hero-home .media-frame img{max-height:205px}.hero-home .media-frame .media-missing{height:180px}.split.visual .media-frame{order:-1}.editor-section{padding:30px 0}.gallery-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.gallery-grid .media-frame img{max-height:155px}.index-items{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.footer-links{grid-template-columns:repeat(2,minmax(0,1fr))}.site-footer{padding:35px 0}.media-frame.hero-art img{max-height:205px}.media-frame.small-figure img{max-height:155px}.media-frame.device-figure{max-width:220px;margin-inline:auto}.media-frame.gif-figure img{max-height:145px}.media-frame.gallery-figure img{max-height:185px}.media-missing{height:125px}}@media(max-width:375px){.brand img{max-width:96px}.brand-word{font-size:18px}.entry{padding:7px 10px;font-size:12px}.gallery-grid{grid-template-columns:1fr}.footer-links{grid-template-columns:1fr 1fr}.gallery-grid .media-frame img{max-height:220px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}