:root{color-scheme:dark;--bg:#080A0D;--panel:#0D1015;--block:#12161C;--mid:#171C23;--text:#F5F7FA;--body:#C7CDD5;--muted:#9098A3;--blue:#5C7CFA;--bright:#6EA8FF;--line:rgba(255,255,255,.09)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--body);font:16px/1.8 Arial,'PingFang SC','Microsoft YaHei',sans-serif}a{color:var(--bright);text-decoration:none}a:hover{color:#A6D9FF}button,input{font:inherit}button{cursor:pointer}a,button{outline-offset:4px}:focus-visible{outline:2px solid #8ED8FF}.container{width:min(1200px,calc(100% - 48px));margin-inline:auto;min-width:0}h1,h2,h3{color:var(--text);line-height:1.38;margin:0 0 19px;font-weight:700}h1{font-size:34px}h2{font-size:26px}h3{font-size:19px}p{margin:0 0 16px;overflow-wrap:anywhere}.eyebrow{font-size:12px;letter-spacing:.16em;color:#8ED8FF;font-weight:700;text-transform:uppercase;margin-bottom:16px}.lead{font-size:17px;line-height:1.85;color:var(--body)}.skip-link{position:absolute;left:10px;top:-70px;background:var(--blue);color:#fff;padding:8px 15px;z-index:120}.skip-link:focus{top:10px}.site-header{position:relative;z-index:20}.main-bar{height:76px;background:rgba(8,10,13,.96);border-bottom:1px solid var(--line)}.bar-inner{height:100%;display:flex;align-items:center;gap:18px}.brand{display:flex;flex-direction:column;justify-content:center;flex:0 0 216px;min-width:0}.brand-caption{font-size:9px;letter-spacing:.11em;color:var(--muted);margin-top:2px;white-space:nowrap}.brand-logo{display:block;border:0;min-width:0;max-width:100%}.brand-logo img{display:block;width:auto;max-width:100%;height:auto;max-height:36px;object-fit:contain;object-position:left center}.brand-logo.image-placeholder{width:126px;height:36px;min-height:0;border:1px solid var(--line)}.desktop-primary{display:flex;align-items:center;gap:20px;margin-left:auto;white-space:nowrap;min-width:0}.desktop-primary a{font-size:14px;font-weight:600;color:#C7CDD5;position:relative;padding:23px 0}.desktop-primary a:hover,.desktop-primary a.is-current{color:var(--bright)}.desktop-primary a.is-current:after{content:"";position:absolute;height:2px;bottom:14px;left:0;right:0;background:var(--bright)}.entry-button{flex:none;min-height:42px;display:inline-flex;align-items:center;justify-content:center;padding:0 21px;border-radius:999px;background:var(--blue);color:#fff!important;font-size:14px;font-weight:bold;white-space:nowrap}.entry-button:hover{background:#7390FF}.menu-toggle{display:none;width:40px;height:40px;padding:10px;background:transparent;border:1px solid var(--line);border-radius:10px;flex-direction:column;justify-content:space-around}.menu-toggle span{height:2px;background:var(--text);display:block;width:100%}.quick-bar{height:46px;background:#10141A;border-bottom:1px solid var(--line)}.quick-inner{height:100%}.quick-desktop,.quick-mobile{display:flex;align-items:center;gap:32px;height:100%}.quick-desktop a,.quick-mobile a{font-size:14px;color:#BEC9D6;white-space:nowrap}.quick-desktop a:hover,.quick-mobile a:hover{color:var(--bright)}.quick-mobile{display:none}.breadcrumb{display:flex;flex-wrap:wrap;gap:11px;font-size:13px;color:var(--muted);padding-top:22px}.breadcrumb a{color:var(--muted)}.drawer-overlay{position:fixed;inset:0;background:rgba(0,0,0,.72);z-index:98;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s,visibility .2s}.site-drawer{position:fixed;z-index:99;inset:0 auto 0 0;width:min(390px,86vw);max-width:100%;overflow-y:auto;background:#0D1015;border-right:1px solid var(--line);padding:18px 22px 32px;transform:translateX(-100%);visibility:hidden;pointer-events:none;transition:transform .25s,visibility .25s;overscroll-behavior:contain}.drawer-open .site-drawer{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-open .drawer-overlay{opacity:1;visibility:visible;pointer-events:auto}.drawer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line)}.drawer-close{font-size:30px;color:white;border:1px solid var(--line);background:var(--mid);width:42px;height:42px;border-radius:9px;line-height:1}.drawer-group{padding:17px 0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:5px 12px}.drawer-group h2{font-size:13px;color:var(--bright);grid-column:1/-1;margin-bottom:4px}.drawer-group a{display:block;padding:4px 0;color:var(--body);font-size:14px}.drawer-group a:hover{color:var(--bright)}.footer-grid{display:grid;grid-template-columns:1.05fr 2.4fr .95fr;gap:44px;padding-top:62px;padding-bottom:50px}.site-footer{background:#050608;border-top:1px solid var(--line);margin-top:76px;color:var(--muted);font-size:13px}.site-footer h2{font-size:17px}.site-footer h3{font-size:12px;color:#9DABC0;margin:0 0 7px}.footer-brand p{margin-top:14px}.footer-directory nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:23px 16px}.footer-topic a{display:inline-block;margin:0 12px 4px 0;color:var(--body)}.footer-topic a:hover,.footer-service a:hover{color:var(--bright)}.footer-service a{color:var(--body)}.footer-bottom{border-top:1px solid var(--line);padding:20px 0 26px;display:flex;justify-content:space-between;gap:24px}.back-to-top{position:fixed;z-index:25;bottom:24px;right:24px;width:42px;height:42px;border:1px solid rgba(255,255,255,.16);border-radius:10px;background:#171C23;color:white;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s}.back-to-top.visible{opacity:1;visibility:visible;pointer-events:auto}.article{padding-top:32px}.page-intro{padding:24px 0 35px;border-bottom:1px solid var(--line);margin-bottom:38px}.page-intro h1{max-width:900px}.page-intro .lead{max-width:780px;color:var(--muted)}.article-section{max-width:820px;margin-bottom:36px}.article-section h2{border-left:2px solid var(--bright);padding-left:15px;margin-bottom:15px}.article-section p{font-size:16px;line-height:1.85}.related{max-width:900px;margin-top:64px;padding:26px;border-top:1px solid var(--line);background:linear-gradient(120deg,var(--block),transparent)}.related h2{font-size:22px}.link-flow{display:flex;flex-wrap:wrap;gap:10px 20px}.link-flow a{display:inline-block;border-bottom:1px solid rgba(110,168,255,.28);padding:4px 0}.figure{margin:18px 0 30px;min-width:0;max-width:100%;background:#0D1015;border:1px solid var(--line);border-radius:13px;overflow:hidden;display:flex;align-items:center;justify-content:center;padding:8px}.figure img{display:block;width:100%;height:auto;max-width:100%;max-height:180px;object-fit:contain;object-position:center center}.figure.wide{max-width:760px}.figure.wide img{max-height:245px}.figure.narrow{max-width:550px}.figure.narrow img{max-height:245px}.figure.device{max-width:270px}.figure.device img{max-height:340px;width:auto}.image-placeholder{background:linear-gradient(135deg,#10151B,#171D25);border:1px solid var(--line);min-height:145px}.figure.device.image-placeholder{height:315px}.figure.wide.image-placeholder{height:220px}.table-scroll{max-width:820px;overflow-x:auto;margin:22px 0 40px}.table-scroll table{border-collapse:collapse;width:100%;min-width:480px;background:var(--block)}caption{text-align:left;color:var(--muted);padding:8px 0}th,td{padding:14px 18px;border:1px solid var(--line);text-align:left;vertical-align:top}th{color:var(--text);background:var(--mid)}.note,.editor-note{background:var(--block);border-left:2px solid var(--blue);padding:20px;max-width:820px;margin:26px 0;color:var(--body)}.index-entry,.category-row{display:grid;grid-template-columns:55px minmax(0,1fr);gap:20px;padding:24px 0;border-bottom:1px solid var(--line);max-width:890px}.index-entry h2,.category-row h2{font-size:21px}.index-entry p,.category-row p{max-width:780px}.ordinal{font-size:20px;color:var(--bright);font-weight:bold;font-variant-numeric:tabular-nums}.read-more{margin-top:15px}.visual-group{margin:46px 0}.visual-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:23px}.visual-card{min-width:0;padding:15px;border:1px solid var(--line);border-radius:13px;background:var(--block)}.visual-card .figure{margin:0 0 15px;height:180px}.visual-card .figure img{max-height:162px}.visual-card h3{margin-bottom:10px}.visual-card p{font-size:14px;line-height:1.8;color:var(--body)}.gallery-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:26px}.gallery-card{margin:0;min-width:0;padding:12px;border:1px solid var(--line);background:var(--block);border-radius:14px}.gallery-card .figure{margin:0 0 15px;height:235px}.gallery-card .figure img{max-height:215px}.gallery-card figcaption{padding:0 10px 12px}.gallery-card strong{color:var(--text)}.gallery-card p{font-size:14px;margin-top:8px}.faq-list{max-width:900px}.faq-list details{border-bottom:1px solid var(--line);padding:17px 10px}.faq-list summary{cursor:pointer;color:var(--text);font-size:17px;font-weight:700}.faq-list details[open]{background:var(--block)}.faq-list details p{margin:15px 8px 3px;max-width:760px}.homepage{padding-top:44px}.home-hero{display:grid;grid-template-columns:minmax(0,52fr) minmax(0,48fr);gap:32px;align-items:center;padding:30px 0 48px;border-bottom:1px solid var(--line)}.home-hero h1{font-size:40px;max-width:600px;line-height:1.35}.home-hero .lead{font-size:16px}.hero-image{margin:0;min-height:0;height:290px}.hero-image img{max-height:100%}.hero-image.image-placeholder{height:290px}.text-actions{display:flex;gap:28px;flex-wrap:wrap;margin-top:20px}.text-actions a{border-bottom:1px solid var(--bright);padding-bottom:4px;font-weight:bold}.home-section{margin-top:56px}.home-section>h2{margin-top:6px}.section-heading{margin-bottom:26px;max-width:840px}.section-heading p{color:var(--muted)}.interest-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.interest-grid a{display:block;color:var(--body);background:var(--block);padding:23px;border:1px solid var(--line);border-radius:12px}.interest-grid a:hover{border-color:rgba(110,168,255,.5);background:#171D26}.interest-grid span{font-size:13px;color:var(--bright)}.interest-grid h3{margin:10px 0;color:var(--text)}.interest-grid p{margin:0;font-size:15px}.asymmetric{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,.8fr);gap:70px;align-items:start;padding-top:16px}.asymmetric>div>p{max-width:740px}.numbered-side,.question-aside{background:var(--block);padding:24px;border-top:2px solid var(--blue)}.numbered-side h3,.question-aside h3{font-size:18px}.numbered-side p{border-top:1px solid var(--line);padding-top:14px;font-size:14px}.numbered-side b{color:var(--bright);margin-right:12px}.numbered-side span{display:block;margin:6px 0 0 34px}.editor-two{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:38px}.editor-two article{border-top:1px solid rgba(255,255,255,.16);padding-top:22px}.editor-two h3{font-size:21px}.question-aside a{display:block;padding:13px 0;border-top:1px solid var(--line)}.media-essay{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:36px;align-items:center}.media-essay .figure{margin:0}.media-essay p{font-size:15px}.home-four{grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.home-four .visual-card{padding:12px}.home-four .visual-card .figure{height:145px}.home-four .visual-card .figure img{max-height:125px}.library-index{border-top:1px solid var(--line);display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 34px}.library-index a{display:grid;grid-template-columns:36px minmax(0,1fr);column-gap:12px;padding:19px 0;border-bottom:1px solid var(--line);color:var(--body)}.library-index span{grid-row:span 2;color:var(--bright);font-size:14px}.library-index strong{font-size:18px;color:var(--text)}.library-index p{font-size:14px;margin:5px 0 0}.mobile-feature{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(0,.7fr);gap:60px;align-items:center}.mobile-feature .figure{margin:auto}.closing-band{padding:30px;border-top:1px solid rgba(255,255,255,.17);border-bottom:1px solid var(--line);background:linear-gradient(110deg,var(--block),transparent)}.closing-band p{max-width:890px}
@media(max-width:1120px){.desktop-primary{gap:12px}.desktop-primary a{font-size:13px}.brand{flex-basis:190px}.bar-inner{gap:13px}.entry-button{padding-inline:15px}}@media(max-width:979px){.container{width:calc(100% - 40px)}.main-bar{height:64px}.bar-inner{position:relative;justify-content:space-between}.menu-toggle{display:flex;flex:none}.brand{position:absolute;left:50%;transform:translateX(-50%);width:110px;max-width:calc(100% - 210px);align-items:center;flex:auto;pointer-events:auto}.brand .brand-logo img{max-height:28px;margin-inline:auto}.brand-caption{display:none}.desktop-primary{display:none}.entry-button{margin-left:auto;height:40px;min-height:40px;padding:0 14px;font-size:13px}.quick-bar{height:44px}.quick-inner{overflow-x:auto;scrollbar-width:none}.quick-inner::-webkit-scrollbar{display:none}.quick-mobile{display:flex;width:max-content;min-width:100%;gap:26px}.quick-desktop{display:none}.footer-grid{grid-template-columns:1fr 2fr;gap:28px}.footer-service{grid-column:1/-1}.asymmetric{gap:30px}.home-hero{gap:22px}.home-hero h1{font-size:34px}.hero-image{height:240px}.home-four{grid-template-columns:repeat(2,minmax(0,1fr))}.media-essay{gap:24px}}
@media(max-width:767px){body{font-size:15px}.container{width:calc(100% - 32px)}h1{font-size:26px}h2{font-size:21px}h3{font-size:17px}.page-intro{padding:10px 0 25px;margin-bottom:27px}.page-intro .lead{font-size:15px}.article-section p{font-size:15px}.home-section{margin-top:34px}.homepage{padding-top:16px}.home-hero{display:flex;flex-direction:column;gap:18px;padding:4px 0 29px}.home-hero .hero-image{order:-1;width:100%;height:190px}.home-hero .hero-copy{width:100%}.home-hero h1{font-size:29px}.home-hero .lead{font-size:15px}.interest-grid,.editor-two,.asymmetric,.media-essay,.mobile-feature{grid-template-columns:1fr}.asymmetric{gap:18px}.visual-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.visual-card{padding:11px}.visual-card .figure{height:148px}.visual-card .figure img{max-height:130px}.gallery-grid{gap:12px}.gallery-card .figure{height:170px}.gallery-card .figure img{max-height:152px}.media-essay .figure{max-width:100%;max-height:185px}.media-essay .figure img{max-height:170px}.mobile-feature .figure{order:-1;max-width:220px;margin-left:0}.mobile-feature .figure img{max-height:340px}.footer-grid{grid-template-columns:1fr;gap:20px;padding-top:40px}.footer-service{grid-column:auto}.footer-directory nav{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-bottom{flex-direction:column;gap:8px}.site-footer{margin-top:46px}.figure img{max-height:155px}.figure.wide img,.figure.narrow img{max-height:185px}.hero-image img{max-height:100%}.library-index{grid-template-columns:1fr}.article-section{margin-bottom:28px}.closing-band{padding:20px}.note{padding:16px}}
@media(max-width:374px){.entry-button{font-size:12px;padding:0 11px}.brand{width:95px;max-width:calc(100% - 180px)}.menu-toggle{width:40px}.visual-grid,.gallery-grid{grid-template-columns:1fr}.visual-card .figure{height:auto;min-height:135px}.visual-card .figure img{max-height:185px}.gallery-card .figure{height:auto;min-height:160px}.index-entry,.category-row{grid-template-columns:38px minmax(0,1fr);gap:10px}.drawer-group{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}