@charset "UTF-8";
:root{--brand:#1354a2;--brand-strong:#0b3975;--brand-soft:#edf3fb;--ink:#1b2737;--muted:#647387;--border:#dce3eb;--page:#f3f5f8;--surface:#fff;--radius:3px;--content-width:1240px;--font:"Microsoft YaHei","PingFang SC","Noto Sans CJK SC",Arial,sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:20px}body{margin:0;background:var(--page);color:var(--ink);font:15px/1.7 var(--font);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}a:hover{color:var(--brand)}button,select{font:inherit}a:focus-visible,button:focus-visible,select:focus-visible{outline:3px solid #e3a135;outline-offset:4px}img{max-width:100%;height:auto}h1,h2,h3,p{margin:0}ul,ol{margin:0;padding:0;list-style:none}.container{width:min(var(--content-width),calc(100% - 48px));margin-inline:auto}.skip-link{position:absolute;left:16px;top:-80px;padding:10px 16px;background:var(--ink);color:#fff;z-index:10}.skip-link:focus{top:8px}.utility{background:#eaf0f5;border-bottom:1px solid #dfe6ed;color:#566679;font-size:12px}.utility .container{display:flex;justify-content:space-between;padding-block:7px}.masthead{background:var(--surface)}.masthead-inner{min-height:112px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}.brand-mark{display:grid;place-items:center;width:48px;height:48px;background:var(--brand);color:white;font-size:27px;font-weight:700;border-radius:2px}.brand-word{display:block;font-size:30px;font-weight:700;letter-spacing:2px;line-height:1.3}.brand-en{display:block;font-size:10px;color:var(--muted);letter-spacing:2px;margin-top:4px}.brand-note{border-left:1px solid var(--border);padding-left:20px;margin-left:8px;color:var(--muted);font-size:13px;line-height:1.9}.masthead-message{text-align:right;font-size:13px;color:var(--muted)}.masthead-message strong{display:block;font-size:17px;letter-spacing:2px;color:var(--ink);font-weight:500;margin-bottom:3px}.nav-wrap{background:var(--brand)}.main-nav{display:grid;grid-template-columns:repeat(10,minmax(0,1fr))}.main-nav a{display:block;text-align:center;color:#fff;font-weight:700;padding:13px 8px;white-space:nowrap}.main-nav a:hover,.main-nav a[aria-current="page"]{background:var(--brand-strong);color:#fff}.main-nav a:focus-visible{outline-offset:-4px}.intro-line{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-block:14px;color:var(--muted);font-size:12px}.intro-line strong{color:var(--brand);font-weight:500}.intro-line time{white-space:nowrap}.home-top{display:grid;grid-template-columns:200px minmax(0,1fr) 270px;gap:20px;align-items:stretch}.panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);min-width:0}.panel-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:15px 20px;border-bottom:1px solid var(--border)}.panel-heading h2{font-size:18px;line-height:1.4}.panel-heading a{font-size:12px;color:var(--muted);white-space:nowrap}.industry-directory h2{font-size:16px;padding:14px 18px;border-bottom:1px solid var(--border);background:var(--brand-soft);color:var(--brand)}.directory-links a{display:flex;align-items:center;justify-content:space-between;padding:10px 18px;border-bottom:1px solid #eff2f6;font-size:14px}.directory-links a:last-child{border:0}.directory-links a span:last-child{color:#8390a2;font-size:12px}.directory-links a:hover{background:var(--brand-soft)}.lead-panel{padding:24px 26px 8px;border-top:3px solid var(--brand)}.eyebrow{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:12px;letter-spacing:1px}.tag{display:inline-flex;align-items:center;line-height:1.4;padding:3px 8px;background:var(--brand-soft);color:var(--brand);font-size:12px;border-radius:2px;white-space:nowrap}.lead-title{font-size:25px;line-height:1.6;font-weight:700;margin:13px 0 12px;letter-spacing:-.3px}.lead-summary{font-size:13px;color:var(--muted);line-height:1.9;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.lead-meta{font-size:12px;color:var(--muted);display:flex;gap:14px;margin:16px 0 18px;flex-wrap:wrap}.lead-list{border-top:1px solid var(--border);padding-block:10px}.lead-list a{display:flex;gap:10px;padding:9px 0;font-size:14px;align-items:baseline}.lead-list em{font-size:11px;color:var(--brand);font-style:normal}.lead-list .one-line{flex:1}.attention-card .panel-heading{padding:15px 18px}.ranked-list{padding:4px 18px 12px}.ranked-list li{padding:14px 0;border-bottom:1px solid #edf0f4;display:flex;align-items:flex-start;gap:11px}.ranked-list li:last-child{border:0}.ranked-list b{font-size:19px;font-family:Georgia,serif;line-height:1.5;color:#8b97a7;font-weight:400}.ranked-list li:first-child b{color:var(--brand)}.ranked-list a{font-size:13px;line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.section-title{display:flex;justify-content:space-between;align-items:baseline;margin:30px 0 14px;gap:20px}.section-title h2{font-size:22px;line-height:1.4;letter-spacing:1px}.section-title p{font-size:12px;color:var(--muted)}.industry-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.industry-card .panel-heading{padding:15px 18px;border-top:2px solid var(--brand)}.industry-card .panel-heading h2{font-size:18px}.industry-card .card-note{font-size:12px;color:var(--muted);padding:10px 18px 0}.compact-list{padding:8px 18px 16px}.compact-list li{display:flex;gap:12px;align-items:baseline;padding:9px 0;border-bottom:1px dashed #e7ecf1}.compact-list li:last-child{border:0}.compact-list a{flex:1;min-width:0;font-size:13px}.compact-list time{flex-shrink:0;font-size:11px;color:var(--muted)}.one-line{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.site-footer{margin-top:40px;border-top:3px solid var(--brand);background:#fff;color:#647184;font-size:12px;padding:26px 0 28px;text-align:center}.footer-brand{font-size:18px;color:var(--brand);font-weight:700;margin-bottom:12px}.footer-copy p{margin:5px 0;line-height:1.9}.footer-copy p:first-child{max-width:980px;margin-inline:auto}.footer-industries{display:flex;justify-content:center;flex-wrap:wrap;gap:8px 18px;border-bottom:1px solid var(--border);padding-bottom:18px;margin-bottom:18px}.footer-industries a{color:#435569}.breadcrumb{display:flex;flex-wrap:wrap;gap:9px;font-size:12px;color:var(--muted);padding:19px 0}.breadcrumb a:hover{text-decoration:underline}.category-hero{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:23px 28px;border-left:4px solid var(--brand);margin-bottom:20px}.category-hero h1{font-size:28px;color:var(--brand);margin-bottom:4px;letter-spacing:3px}.category-hero p{font-size:13px;color:var(--muted)}.category-en{font-size:38px;font-family:Georgia,serif;color:#e2e8ef;letter-spacing:1px}.content-columns{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:24px;align-items:start}.list-header{display:flex;justify-content:space-between;align-items:center;padding:16px 24px;border-bottom:1px solid var(--border)}.list-header h2{font-size:17px}.list-header span{font-size:12px;color:var(--muted)}.article-list{padding:0 24px}.article-row{padding:23px 0;border-bottom:1px solid var(--border)}.article-row:last-child{border-bottom:0}.article-row h2{font-size:19px;line-height:1.7;font-weight:600;margin-bottom:8px}.article-row p{font-size:13px;line-height:1.9;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.row-meta{display:flex;gap:10px;flex-wrap:wrap;font-size:12px;color:var(--muted);margin-top:12px}.row-meta .industry-label{color:var(--brand)}.pagination{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:8px;padding:27px 16px 30px;font-size:13px}.pagination a,.pagination span{display:flex;align-items:center;justify-content:center;min-width:36px;min-height:36px;border:1px solid var(--border);padding:4px 12px;border-radius:2px}.pagination [aria-current="page"]{background:var(--brand);border-color:var(--brand);color:white}.pagination a:hover{border-color:var(--brand)}.pagination .disabled{color:#687586;background:#f3f5f8}.sidebar{display:grid;gap:20px}.sidebar .directory-links{display:grid;grid-template-columns:1fr 1fr;padding:10px}.sidebar .directory-links a{padding:10px 8px;border:0;font-size:13px}.sidebar .directory-links a.active{background:var(--brand-soft);color:var(--brand);font-weight:700}.side-reading{padding:6px 18px 15px}.side-reading li{padding:13px 0;border-bottom:1px dashed var(--border);font-size:13px}.side-reading li:last-child{border:0}.side-reading time{display:block;font-size:11px;color:var(--muted);margin-top:6px}.side-note{padding:18px;font-size:13px;color:var(--muted);border-top:2px solid var(--brand)}.side-note strong{display:block;color:var(--ink);font-size:15px;margin-bottom:8px}.article-panel{padding:30px 36px;overflow:hidden}.article-heading h1{font-size:30px;line-height:1.6;letter-spacing:-.3px;overflow-wrap:anywhere}.article-meta{display:flex;flex-wrap:wrap;gap:9px 18px;font-size:12px;color:var(--muted);margin:16px 0 25px;padding-bottom:22px;border-bottom:1px solid var(--border)}.company-card{background:var(--brand-soft);border-left:3px solid var(--brand);padding:16px 18px;margin-bottom:28px}.company-card h2{font-size:13px;color:var(--brand);margin-bottom:9px;font-weight:500}.company-data{display:flex;align-items:baseline;flex-wrap:wrap;gap:8px 24px;font-size:14px}.company-data strong{font-weight:600}.company-data span{font-size:12px;color:var(--muted);margin-right:8px}.company-data a{font-variant-numeric:tabular-nums;color:var(--brand);font-weight:700;white-space:nowrap}.article-body{font-size:17px;line-height:1.95;overflow-wrap:anywhere;color:#273342}.article-body p{margin:0 0 21px}.article-body h2{font-size:22px;line-height:1.6;color:var(--ink);margin:36px 0 18px;padding-left:13px;border-left:3px solid var(--brand)}.article-body h3{font-size:19px;line-height:1.7;margin:28px 0 14px}.article-body img{display:block;max-width:100%;max-height:460px;object-fit:contain;margin:24px auto}.table-scroll{overflow-x:auto;margin:26px 0;border:1px solid var(--border);border-radius:2px}.table-scroll:focus-visible{outline:3px solid var(--brand)}.article-body table{width:100%;min-width:650px;border-collapse:collapse;font-size:13px;line-height:1.8}.article-body th{background:var(--brand-soft);color:var(--brand-strong);font-weight:600}.article-body th,.article-body td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--border);border-right:1px solid var(--border);min-width:120px;vertical-align:top}.article-body tr:last-child td{border-bottom:0}.article-body td:last-child,.article-body th:last-child{border-right:0}.article-body ul,.article-body ol{padding-left:24px;margin:18px 0;list-style:disc}.article-body a{color:var(--brand);text-decoration:underline}.article-end{font-size:12px;color:var(--muted);border-top:1px solid var(--border);margin-top:32px;padding-top:18px}.related-section{margin-top:22px}.related-list{display:grid;grid-template-columns:1fr 1fr;gap:0 28px;padding:6px 24px 16px}.related-list li{padding:15px 0;border-bottom:1px dashed var(--border);font-size:14px}.toc{padding:6px 18px 18px}.toc a{display:block;font-size:13px;border-bottom:1px solid #edf1f5;padding:12px 0}.toc a:last-child{border:0}.image-fallback{padding:36px 16px;text-align:center;background:#f0f3f7;color:var(--muted);font-size:13px;margin:22px 0;border:1px dashed var(--border)}.empty-state{text-align:center;padding:70px 20px;color:var(--muted)}.empty-state strong{display:block;font-size:19px;color:var(--ink);margin-bottom:8px}.not-found{max-width:760px;margin:50px auto;padding:60px 25px;text-align:center}.not-found .error-number{font-size:74px;font-weight:700;color:var(--brand);line-height:1.2}.not-found h1{font-size:25px;margin:15px 0}.not-found p{color:var(--muted);font-size:14px}.button-link{display:inline-flex;align-items:center;justify-content:center;margin-top:24px;min-height:42px;padding:8px 24px;background:var(--brand);color:white;border-radius:2px}.button-link:hover{background:var(--brand-strong);color:#fff}
.article-pagination{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;padding:20px 24px;margin-top:22px;min-width:0}.article-step{min-width:0}.article-step+.article-step{border-left:1px solid var(--border);padding-left:24px}.article-step-label{display:block;font-size:12px;color:var(--muted);margin-bottom:7px}.article-step a{display:block;font-size:14px;line-height:1.85;overflow-wrap:anywhere;min-height:30px}.article-step a:hover{text-decoration:underline;text-underline-offset:4px}.article-step-empty{display:block;color:var(--muted);font-size:13px;line-height:1.85}.related-list a{overflow-wrap:anywhere}.related-empty{padding:24px;color:var(--muted);font-size:13px}.theme-03 .t03-article>.article-pagination{margin-inline:35px}.theme-05 .article-pagination{background:transparent;border-block:1px solid #a4916d;border-inline:0;border-radius:0}
@media(max-width:760px){.article-pagination{grid-template-columns:minmax(0,1fr);padding:18px;gap:16px;margin-top:18px}.article-step+.article-step{border-left:0;border-top:1px solid var(--border);padding-left:0;padding-top:16px}.article-step a{font-size:13px;min-height:32px}.article-step-label{font-size:11px}.related-empty{padding:20px}.theme-03 .t03-article>.article-pagination{margin-inline:0}}
.main-nav a[aria-current="page"]{box-shadow:inset 0 -3px 0 #fff;text-decoration:underline;text-underline-offset:5px}
.company-data>div{min-width:0;max-width:100%}.company-data a{white-space:normal;overflow-wrap:anywhere;display:inline-block;max-width:100%}
.article-contact{background:var(--brand-soft);border-left:3px solid var(--brand);margin:0 0 28px;padding:18px 20px}.article-contact .company-data>div{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 8px;overflow-wrap:anywhere}.article-contact .company-data span{margin-right:0;flex-shrink:0}.article-contact .company-data strong,.article-contact .company-data a{min-width:0;overflow-wrap:anywhere;max-width:100%}.article-contact .company-data a{font-size:15px}.article-contact .company-data strong{font-weight:600}
@media(max-width:760px){.article-contact{padding:15px;margin-bottom:23px}.article-contact .company-data>div+div{margin-top:9px}.article-contact .company-data strong,.article-contact .company-data a{flex:1 1 0}.article-contact .company-data a{font-size:14px}}
/* Design specification page */
.spec-page{padding-bottom:30px}.spec-intro{padding:36px 0 22px}.spec-intro h1{font-size:30px;margin-bottom:10px}.spec-intro p{max-width:860px;color:var(--muted);font-size:14px}.spec-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}.spec-card{padding:25px}.spec-card h2{font-size:19px;margin-bottom:18px}.swatches{display:flex;gap:12px;flex-wrap:wrap}.swatch{width:88px;font-size:11px;color:var(--muted)}.swatch i{display:block;height:52px;border-radius:2px;border:1px solid #d7dfe8;margin-bottom:7px}.type-sample{margin:14px 0;display:flex;gap:20px;align-items:baseline}.type-sample small{min-width:95px;font-size:11px;color:var(--muted)}.token-table{border-collapse:collapse;width:100%;font-size:13px}.token-table td{padding:10px 6px;border-bottom:1px solid var(--border)}.token-table td:first-child{color:var(--muted);width:40%}.spec-stack>*+*{margin-top:18px}.spec-note{color:var(--muted);font-size:12px;margin-top:12px}
@media(min-width:1440px){.article-panel{padding:36px 42px}}
@media(max-width:1100px){.home-top{grid-template-columns:180px minmax(0,1fr)}.attention-card{grid-column:1/-1}.ranked-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 20px}.ranked-list li{border:0}.industry-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.content-columns{grid-template-columns:minmax(0,1fr) 235px;gap:20px}.article-panel{padding:26px}.masthead-message{display:none}}
@media(max-width:760px){.container{width:calc(100% - 32px)}.utility .container{padding-block:6px;font-size:11px}.utility .utility-right{display:none}.masthead-inner{min-height:90px;gap:14px}.brand-word{font-size:26px}.brand-mark{width:42px;height:42px;font-size:24px}.brand-note{font-size:11px;padding-left:12px;margin:0}.brand-en{letter-spacing:1px;font-size:9px}.main-nav{display:flex;width:100%;overflow-x:auto;scrollbar-width:thin}.main-nav a{min-width:66px;font-size:14px;padding:12px 15px}.intro-line{font-size:11px;padding-block:12px}.intro-line .intro-secondary{display:none}.home-top{display:block}.industry-directory{display:none}.lead-panel{padding:19px 19px 4px}.lead-title{font-size:22px;line-height:1.65}.lead-summary{-webkit-line-clamp:3}.lead-list a{font-size:13px}.attention-card{margin-top:16px}.ranked-list{display:block;padding-inline:18px}.ranked-list li{padding:11px 0;border-bottom:1px solid #edf0f4}.ranked-list li:nth-child(n+4){display:none}.ranked-list a{font-size:13px;-webkit-line-clamp:1}.section-title{margin-top:25px}.section-title h2{font-size:20px}.section-title p{font-size:11px}.industry-grid{grid-template-columns:1fr;gap:16px}.industry-card .compact-list{display:grid;grid-template-columns:1fr}.compact-list a{font-size:14px}.compact-list li{padding-block:10px}.site-footer{margin-top:28px;padding-top:22px;font-size:11px;text-align:left}.footer-brand{text-align:center}.footer-copy p{margin:8px 0}.footer-industries{gap:10px 19px;padding-bottom:15px;margin-bottom:15px}.breadcrumb{padding-block:14px;font-size:11px}.category-hero{padding:20px;margin-bottom:16px}.category-hero h1{font-size:25px}.category-hero p{font-size:12px}.category-en{display:none}.content-columns{display:block}.list-header{padding:14px 18px}.article-list{padding-inline:18px}.article-row{padding-block:19px}.article-row h2{font-size:17px;line-height:1.8}.article-row p{font-size:12px}.row-meta{font-size:11px}.sidebar{margin-top:18px}.sidebar .directory-links{grid-template-columns:repeat(3,1fr)}.sidebar .directory-links a{justify-content:center;font-size:13px}.article-sidebar .toc-panel{display:none}.article-panel{padding:22px 19px}.article-heading h1{font-size:24px;line-height:1.65}.article-meta{margin-block:14px 20px;padding-bottom:18px;font-size:11px;gap:8px 14px}.company-card{padding:14px;margin-bottom:23px}.company-data{display:block;font-size:13px}.company-data>div+div{margin-top:7px}.article-body{font-size:16px;line-height:1.95}.article-body p{margin-bottom:19px}.article-body h2{font-size:20px;margin-block:29px 17px}.article-body h3{font-size:18px}.article-body img{margin-block:20px}.related-list{grid-template-columns:1fr;padding-inline:18px}.related-list li{font-size:13px}.spec-intro{padding-top:25px}.spec-intro h1{font-size:25px}.spec-grid{grid-template-columns:1fr}.spec-card{padding:20px}.not-found{margin-top:25px}.not-found h1{font-size:22px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}