*{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:#8ED8FF;text-decoration:none}a:hover{color:#fff}a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid #8ED8FF;outline-offset:4px}img{display:block;max-width:100%;height:auto}h1,h2,h3,p{overflow-wrap:anywhere}h1,h2,h3{color:#F5F7FA;line-height:1.37;letter-spacing:-.018em}h1{font-size:34px;margin:0 0 20px}h2{font-size:26px;margin:0 0 18px}h3{font-size:19px;margin:0 0 12px}p{margin:0 0 17px}figure{margin:0;min-width:0;max-width:100%}figcaption{font-size:13px;color:#9098A3;padding:10px 2px 0;line-height:1.65}button{font:inherit;cursor:pointer}main{min-height:62vh}.skip-link{position:absolute;z-index:200;left:12px;top:-120px;background:#5C7CFA;color:#fff;padding:10px}.skip-link:focus{top:8px}.topbar{background:rgba(8,10,13,.96);border-bottom:1px solid rgba(255,255,255,.09)}.bar-inner{max-width:1200px;padding:0 24px;margin:auto;height:76px;display:flex;gap:22px;align-items:center;justify-content:space-between;position:relative}.brand,.drawer-brand,.footer-brand{display:flex;gap:9px;align-items:center;color:#F5F7FA;font-weight:700;flex-shrink:0}.brand{width:216px}.brand .contained-image{max-height:36px;width:auto}.brand-text{display:flex;flex-direction:column;line-height:1.24;font-size:17px}.brand-text small{font-size:9px;color:#9098A3;font-weight:400;letter-spacing:.02em}.desktop-nav{display:flex;gap:clamp(12px,1.5vw,23px);align-items:center;white-space:nowrap}.desktop-nav a{font-size:14px;color:#C7CDD5;position:relative;padding:25px 0}.desktop-nav a.active{color:#6EA8FF}.desktop-nav a.active:after{position:absolute;content:"";height:2px;background:#6EA8FF;bottom:11px;left:0;right:0}.entry-link{background:#5C7CFA;color:#fff;padding:7px 18px;border-radius:999px;white-space:nowrap;font-size:14px;min-height:40px;display:inline-flex;align-items:center;justify-content:center;flex-shrink:0}.entry-link:hover{background:#7390FF;color:#fff}.menu-toggle{display:none}.quick-nav{background:#10141A;border-bottom:1px solid rgba(255,255,255,.09)}.quick-inner{height:44px;display:flex;align-items:center;gap:27px;max-width:1200px;padding:0 24px;margin:0 auto;white-space:nowrap}.quick-inner a{font-size:13px;color:#9098A3}.quick-inner a:hover,.quick-inner a.active{color:#6EA8FF}.quick-mobile{display:none}.main-container{max-width:1200px;margin:0 auto;padding:26px 24px 76px;min-width:0}.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:#9098A3;margin:0 0 30px}.breadcrumb a{color:#9098A3}.page-head{margin:0 0 38px;max-width:870px}.page-head .eyebrow,.eyebrow{color:#8ED8FF;font-size:12px;font-weight:bold;letter-spacing:.15em;text-transform:uppercase;margin-bottom:13px}.page-lead{font-size:18px;color:#C7CDD5;max-width:780px}.article-layout{display:grid;grid-template-columns:minmax(0,820px) minmax(210px,1fr);gap:52px;align-items:start}.article-layout.single{display:block;max-width:820px}.article-body,.story-section,.page-content{min-width:0}.story-section{margin:0 0 42px}.story-section h2{padding-bottom:10px;border-bottom:1px solid rgba(255,255,255,.09)}.story-section p{font-size:16px;line-height:1.85}.article-aside{position:sticky;top:22px;border-left:1px solid rgba(255,255,255,.16);padding:0 0 0 22px}.article-aside strong{color:#F5F7FA}.article-aside a{display:block;padding:7px 0;font-size:14px}.reading-next{margin:45px 0 10px;padding:24px;background:#12161C;border:1px solid rgba(255,255,255,.09);border-radius:13px}.reading-next h2{font-size:20px;margin:0 0 12px}.link-row{display:flex;gap:13px 22px;flex-wrap:wrap}.link-row a:after{content:" ↗";font-size:11px}.feature-photo,.visual-item .image-shell,.hero-media,.device-picture,.mini-visual,.featured-visual{background:#0D1015;border:1px solid rgba(255,255,255,.09);border-radius:13px;padding:12px;min-width:0;max-width:100%;overflow:hidden}.contained-image{object-fit:contain;object-position:center center;width:100%;height:auto;max-width:100%}.feature-photo{margin:0 0 32px;max-width:720px}.feature-photo .contained-image{max-height:245px;width:auto;margin:auto}.image-placeholder{display:block;width:100%;height:165px;background:linear-gradient(135deg,#10141A,#171C23);border-radius:8px}.feature-photo .image-placeholder{height:220px}.visual-item .image-placeholder{height:150px}.hero{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:32px;align-items:center;padding:36px 0 46px;border-bottom:1px solid rgba(255,255,255,.09)}.hero h1{font-size:41px}.hero p{max-width:580px}.hero-media{height:300px;display:flex;align-items:center;justify-content:center}.hero-media img{max-height:100%;width:auto}.hero-media .image-placeholder{height:100%}.hero-actions{display:flex;gap:22px;flex-wrap:wrap;margin-top:22px}.hero-actions a{font-weight:bold}.section-block{margin:52px 0}.section-intro{max-width:760px}.two-up{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.domain-panel{border-top:1px solid rgba(255,255,255,.16);padding:19px 10px 10px 0}.domain-panel h3 a{color:#F5F7FA}.split-article{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(230px,.7fr);gap:40px;align-items:start}.micro-index{border-left:1px solid #5C7CFA;padding-left:21px}.micro-index a{display:block;padding:10px 0;border-bottom:1px solid rgba(255,255,255,.09)}.editorial-row{display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);gap:34px;align-items:center}.editorial-row .feature-photo{margin:0}.visual-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:19px}.visual-grid.four{grid-template-columns:repeat(4,minmax(0,1fr))}.visual-item{min-width:0}.visual-item h3{font-size:17px;margin:10px 0 4px}.visual-item p{font-size:14px;line-height:1.7;color:#C7CDD5}.visual-item .image-shell{display:flex;align-items:center;justify-content:center;min-height:175px}.visual-item img{max-height:175px;width:auto}.visual-item .image-shell.tall img{max-height:245px}.reading-index{border-top:1px solid rgba(255,255,255,.16)}.index-entry{padding:19px 0;border-bottom:1px solid rgba(255,255,255,.09);display:grid;grid-template-columns:45px minmax(0,1fr) auto;gap:16px;align-items:start}.index-entry .index-number{color:#7775FF}.index-entry h3{margin:0 0 4px}.index-entry p{font-size:14px;margin:0}.index-entry>a{font-size:13px}.notice-strip{padding:22px;border:1px solid rgba(255,255,255,.12);background:#12161C;border-radius:12px}.notice-strip p{margin:0}.table-wrap{overflow-x:auto;margin:20px 0 35px}.compare-table{border-collapse:collapse;width:100%;min-width:560px}.compare-table th,.compare-table td{padding:12px 16px;border:1px solid rgba(255,255,255,.12);text-align:left;vertical-align:top}.compare-table th{color:#F5F7FA;background:#171C23}.article-steps .story-section{padding-left:22px;border-left:2px solid #5C7CFA}.article-steps .story-section h2{border:0}.gallery-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:26px}.gallery-grid figure{padding:18px;border:1px solid rgba(255,255,255,.1);border-radius:13px;background:#12161C}.gallery-grid img{width:auto;max-height:300px;margin:auto}.gallery-grid figure:first-child{grid-column:span 2}.gallery-grid figure:first-child img{max-height:245px}.gallery-grid .image-placeholder{height:235px}.question-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.question-card{padding:22px;background:#12161C;border:1px solid rgba(255,255,255,.09);border-radius:13px}.question-card h2{font-size:20px}.topic-list{padding-left:24px}.topic-list li{margin-bottom:15px}.faq-list details{border:1px solid rgba(255,255,255,.1);border-radius:10px;padding:16px 19px;margin-bottom:10px;background:#12161C}.faq-list summary{color:#F5F7FA;cursor:pointer;font-weight:bold}.faq-list details p{margin:12px 0 0}.device-picture{width:min(100%,270px);margin:auto}.device-picture img{max-height:340px;width:auto;margin:auto}.device-picture .image-placeholder{height:320px}.graphic-banner{max-width:720px;margin-bottom:22px}.graphic-banner img{max-height:175px;width:auto;margin:auto}.graphic-banner .image-placeholder{height:150px}.site-footer{background:#050608;border-top:1px solid rgba(255,255,255,.09)}.footer-inner{max-width:1200px;margin:auto;padding:56px 24px 36px;display:grid;grid-template-columns:1.05fr 1.2fr .9fr;gap:44px}.footer-about p{font-size:14px;color:#9098A3;margin-top:16px}.footer-brand .contained-image{max-height:34px;width:auto}.footer-inner h2{font-size:17px;margin:0 0 16px}.footer-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:5px 11px}.footer-links a{font-size:13px;color:#9098A3}.footer-links a:hover{color:#8ED8FF}.footer-bottom{max-width:1200px;margin:auto;padding:19px 24px 29px;border-top:1px solid rgba(255,255,255,.09);display:flex;gap:22px;flex-wrap:wrap;font-size:12px;color:#9098A3}.drawer-backdrop{position:fixed;inset:0;background:rgba(0,0,0,.65);z-index:60;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s}.drawer-backdrop.is-open{opacity:1;visibility:visible;pointer-events:auto}.site-drawer{position:fixed;top:0;bottom:0;left:0;width:min(86vw,390px);background:#0D1015;z-index:70;transform:translateX(-102%);visibility:hidden;pointer-events:none;transition:transform .2s,visibility .2s;overflow-y:auto;padding:20px 23px}.site-drawer.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:25px}.drawer-brand .contained-image{max-height:29px;width:auto}#drawer-close{border:0;background:#171C23;color:#F5F7FA;border-radius:8px;width:40px;height:40px;font-size:25px;line-height:1}.drawer-group{margin-bottom:23px}.drawer-group h2{font-size:13px;color:#9098A3;letter-spacing:.08em;margin:0 0 9px}.drawer-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px 10px}.drawer-links a{color:#C7CDD5;padding:7px 0;font-size:14px}.back-top{position:fixed;right:23px;bottom:24px;opacity:0;visibility:hidden;pointer-events:none;background:#5C7CFA;color:#fff;border:0;border-radius:50%;height:42px;width:42px;transition:opacity .2s}.back-top.visible{opacity:1;visibility:visible;pointer-events:auto}
@media(max-width:1099px){.bar-inner{gap:14px}.brand{width:198px}.desktop-nav{gap:11px}.desktop-nav a{font-size:13px}}@media(max-width:979px){.bar-inner{height:64px;padding:0 20px;justify-content:space-between}.menu-toggle{display:flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;width:40px;height:40px;border:1px solid rgba(255,255,255,.16);border-radius:10px;background:transparent;flex-shrink:0}.menu-toggle span{height:2px;width:18px;background:#F5F7FA}.brand{position:absolute;left:50%;transform:translateX(-50%);width:auto;max-width:calc(100% - 190px);justify-content:center}.brand-text{display:none}.brand .contained-image{max-height:28px;width:auto}.desktop-nav{display:none}.entry-link{height:40px;min-height:40px;padding:6px 14px;font-size:13px}.quick-desktop{display:none}.quick-mobile{display:flex;overflow-x:auto;scrollbar-width:none;height:44px;gap:27px;padding:0 20px}.quick-mobile::-webkit-scrollbar{display:none}.main-container{padding:22px 20px 60px}.article-layout{grid-template-columns:minmax(0,1fr)}.article-aside{position:static;max-width:720px}.visual-grid.four{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-inner{grid-template-columns:1fr 1fr;gap:34px}.footer-about{grid-column:span 2;max-width:500px}}@media(max-width:767px){h1{font-size:26px}h2{font-size:21px}h3{font-size:18px}.page-lead{font-size:16px}.hero{display:flex;flex-direction:column-reverse;align-items:stretch;gap:22px;padding:17px 0 30px}.hero h1{font-size:30px}.hero-media{height:220px}.two-up,.split-article,.editorial-row{grid-template-columns:minmax(0,1fr)}.visual-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.section-block{margin:35px 0}.article-body .story-section{margin-bottom:34px}.story-section p{font-size:15px}.question-grid{grid-template-columns:1fr}.gallery-grid{grid-template-columns:1fr}.gallery-grid figure:first-child{grid-column:span 1}.footer-inner{grid-template-columns:1fr 1fr}.footer-about{grid-column:span 2}.index-entry{grid-template-columns:32px minmax(0,1fr)}.index-entry>a{grid-column:2}.editorial-row .feature-photo{margin:0 auto}.visual-item .image-shell{min-height:150px}.device-picture{width:min(100%,220px)}}@media(max-width:480px){.bar-inner{padding:0 16px;height:63px}.quick-mobile{padding:0 16px;gap:23px}.main-container{padding:18px 16px 45px}.hero h1{font-size:28px}.hero-media{height:190px}.hero-actions{gap:15px}.visual-grid{gap:12px}.visual-item .image-shell{min-height:130px;padding:6px}.visual-item img{max-height:150px}.visual-item p{font-size:13px}.visual-grid.four{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-inner{padding:38px 16px;gap:28px}.footer-bottom{padding:17px 16px 25px}.feature-photo .image-placeholder{height:160px}.graphic-banner img{max-height:145px}.article-steps .story-section{padding-left:16px}}@media(max-width:350px){.brand{max-width:calc(100% - 178px)}.entry-link{padding:5px 11px;font-size:12px}.visual-grid,.visual-grid.four{grid-template-columns:1fr}.drawer-links{grid-template-columns:1fr}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}
