/* Metasequoia Chinese documentation. Local system fonts, no external requests. */
:root{color-scheme:light;--bg:#fff;--surface:#f7f9fa;--surface-2:#edf2f4;--text:#202c3b;--muted:#6a7787;--subtle:#929da8;--line:#e7ecef;--accent:#187e78;--accent-bright:#219990;--accent-tint:#e9f5f2;--shadow:0 12px 35px #1a394212;--header:68px;--sidebar:250px;--article-size:16px;--mono:ui-monospace,SFMono-Regular,Consolas,"Liberation Mono",monospace}
[data-theme=dark]{color-scheme:dark;--bg:#141b22;--surface:#19232c;--surface-2:#222f3a;--text:#e0e8ee;--muted:#9baab7;--subtle:#7c8d9b;--line:#2b3944;--accent:#7acfc0;--accent-bright:#91dace;--accent-tint:#1b3738;--shadow:0 12px 35px #0003}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;-webkit-font-smoothing:antialiased}body.modal-open{overflow:hidden}a{color:var(--accent);text-decoration:none}button,input{font:inherit}button{cursor:pointer}button,a,input,summary{-webkit-tap-highlight-color:transparent}button{color:inherit}button:disabled{cursor:default}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--accent);outline-offset:4px}button svg,a svg{flex-shrink:0}svg{vertical-align:middle}button{border:0;background:none}button:hover{color:var(--accent)}[hidden]{display:none!important}::selection{background:#b6e6dc;color:#163d3d}h1,h2,h3,h4,p{margin-top:0}h1,h2,h3,h4{letter-spacing:-.035em}img{max-width:100%;height:auto}kbd{display:inline-flex;align-items:center;justify-content:center;min-width:22px;padding:0 5px;border:1px solid var(--line);border-radius:4px;font:11px/20px var(--mono);color:var(--muted);background:var(--bg)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:fixed;top:-60px;left:20px;background:var(--accent);color:var(--bg);padding:9px 18px;z-index:1000;border-radius:6px}.skip-link:focus{top:10px}
.site-header{height:var(--header);position:fixed;inset:0 0 auto;display:flex;align-items:center;justify-content:space-between;gap:20px;background:var(--bg);border-bottom:1px solid var(--line);z-index:40;padding:0 35px 0 25px}.header-brand,.header-actions{display:flex;align-items:center;gap:24px}.brand{display:flex;align-items:center;gap:10px;color:var(--text);line-height:1.15}.brand-mark{width:33px;height:36px;display:grid;place-items:center;color:var(--accent)}.brand-word{font-size:18px;font-weight:720;letter-spacing:-.5px}.brand-word>span{display:block;font-size:10px;font-weight:500;color:var(--muted);letter-spacing:2.5px;margin-top:5px}.version-badge{border:1px solid var(--line);border-radius:5px;color:var(--muted);font:11px/17px var(--mono);padding:0 5px;margin-left:3px;margin-top:-13px}.header-actions{gap:22px}.header-link{font-size:13px;color:var(--muted)}.header-link:hover{color:var(--accent)}.header-divider{width:1px;height:22px;background:var(--line)}.icon-button{width:36px;height:36px;display:inline-grid;place-items:center;border-radius:8px;flex-shrink:0;color:var(--muted)}.icon-button:hover{background:var(--surface-2);color:var(--accent)}.icon-button svg{width:20px;height:20px}.search-trigger{display:flex;align-items:center;gap:9px;background:var(--surface);border:1px solid var(--line);border-radius:8px;color:var(--muted);width:290px;text-align:left;padding:7px 10px;font-size:13px}.search-trigger svg{width:17px;height:17px}.search-trigger kbd{margin-left:auto;white-space:nowrap}.mobile-menu{display:none}.reading-progress{position:fixed;top:calc(var(--header) - 2px);left:var(--sidebar);right:0;height:2px;z-index:45;pointer-events:none}.reading-progress>div{height:100%;width:0;background:var(--accent-bright)}
.sidebar{position:fixed;top:var(--header);bottom:0;left:0;width:var(--sidebar);padding:26px 18px 0;border-right:1px solid var(--line);background:var(--surface);overflow-y:auto;overscroll-behavior:contain;z-index:30;scrollbar-width:thin;scrollbar-color:var(--line) transparent}.sidebar-home{display:flex;align-items:center;gap:10px;padding:8px 12px;border-radius:6px;color:var(--muted);font-size:13px;margin-bottom:25px}.sidebar-home svg{width:17px;height:17px}.sidebar-home.active{background:var(--accent-tint);color:var(--accent);font-weight:650}.nav-label{font-size:10px;letter-spacing:1.5px;font-weight:650;color:var(--subtle);padding:0 12px;margin-bottom:10px;display:flex;justify-content:space-between}.nav-label span{font-size:9px;letter-spacing:0;font-weight:400}.nav-group{margin:5px 0 8px}.nav-group summary{display:flex;align-items:center;gap:9px;list-style:none;font-size:12px;font-weight:600;cursor:pointer;color:var(--text);padding:8px 10px;border-radius:5px}.nav-group summary::-webkit-details-marker{display:none}.nav-group summary:hover{background:var(--surface-2)}.nav-group summary>.group-icon{color:var(--muted);width:16px;height:16px}.nav-count{margin-left:auto;color:var(--subtle);font:10px var(--mono)}.group-chevron{color:var(--subtle);width:13px;height:13px;transition:transform .2s}.nav-group[open] .group-chevron{transform:rotate(90deg)}.nav-list{padding:2px 0 5px 20px}.nav-link{display:block;border-left:1px solid var(--line);padding:5px 9px 5px 16px;font-size:12px;color:var(--muted);line-height:1.7;overflow-wrap:anywhere}.nav-link:hover{color:var(--accent);border-left-color:var(--accent)}.nav-link.active{color:var(--accent);background:var(--accent-tint);border-left:2px solid var(--accent);padding-left:15px;border-radius:0 4px 4px 0;font-weight:650}.nav-link.read:after{content:"✓";font-size:10px;margin-left:7px;opacity:.65}.sidebar-foot{margin:30px 11px 0;padding:22px 0;border-top:1px solid var(--line);font-size:10px;color:var(--muted)}.status-dot{display:inline-block;width:5px;height:5px;border-radius:50%;background:var(--accent);margin-right:7px;vertical-align:2px}.foot-note{display:block;padding-left:12px;color:var(--subtle);font-size:9px;margin-top:3px}.main-shell{margin-left:var(--sidebar);padding:var(--header) 0 0;min-height:100vh;outline:none!important}.site-footer{margin:40px 48px 0;padding:25px 0 30px;border-top:1px solid var(--line);font-size:10px;color:var(--subtle);display:flex;gap:20px;flex-wrap:wrap}.site-footer>span:first-child{color:var(--muted);font-weight:600}.site-footer a{margin-left:auto;color:var(--muted)}
/* Homepage */
.home-container{max-width:1190px;margin:auto;padding:40px 54px 0}.home-eyebrow{display:flex;align-items:center;gap:8px;text-transform:uppercase;font:10px/1.5 var(--mono);font-weight:600;letter-spacing:2px;color:var(--accent);margin-bottom:23px}.home-eyebrow:before{content:"";display:block;background:var(--accent);width:18px;height:1px}.home-hero{position:relative;display:grid;grid-template-columns:1.15fr 1fr;align-items:center;gap:25px;min-height:340px;margin-bottom:26px}.hero-copy h1{font-size:43px;line-height:1.3;margin-bottom:19px;font-weight:680;letter-spacing:-1.6px}.hero-copy h1 span{color:var(--accent)}.hero-copy>p{font-size:14px;line-height:1.9;color:var(--muted);max-width:400px;margin-bottom:25px}.hero-buttons{display:flex;gap:12px;flex-wrap:wrap}.button-primary,.button-secondary{display:inline-flex;gap:13px;align-items:center;justify-content:center;padding:10px 17px;border-radius:6px;font-size:12px;font-weight:600;line-height:1.5}.button-primary{background:var(--accent);color:#fff;border:1px solid var(--accent)}[data-theme=dark] .button-primary{color:#142825}.button-primary:hover{filter:brightness(1.1);color:#fff}.button-secondary{background:var(--bg);border:1px solid var(--line);color:var(--text)}.button-secondary:hover{background:var(--surface)}.button-primary svg,.button-secondary svg{width:15px;height:15px}.hero-visual{position:relative;min-width:0;aspect-ratio:1.2;display:grid;place-items:center}.hero-visual svg{width:100%;height:auto;max-height:330px}.hero-visual:before{content:"";position:absolute;inset:10%;background:radial-gradient(ellipse,#bee7da30,transparent 70%);border-radius:50%;z-index:-1}.hero-note{position:absolute;bottom:10%;right:4%;font:9px/1.7 var(--mono);letter-spacing:1px;color:var(--subtle);padding-left:12px;border-left:1px solid var(--line)}.hero-axis{position:absolute;bottom:11%;left:5%;font:10px var(--mono);color:var(--subtle)}.stats-strip{display:flex;align-items:center;gap:30px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:17px 0;margin:0 0 37px}.stat{display:flex;align-items:baseline;gap:8px}.stat strong{font:650 20px/1.5 var(--mono);color:var(--text);letter-spacing:-1px}.stat span{font-size:10px;color:var(--muted)}.stats-strip>.stat-note{font-size:10px;color:var(--muted);margin-left:auto;display:flex;align-items:center;gap:6px}.stat-note svg{width:13px;height:13px;color:var(--accent)}.section-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}.section-heading h2{font-size:19px;font-weight:650;margin:0}.section-heading>span{font-size:10px;color:var(--subtle)}.path-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.path-card{padding:22px 21px 20px;border:1px solid var(--line);border-radius:9px;background:var(--bg);color:var(--text);position:relative;transition:transform .2s,border-color .2s,box-shadow .2s}.path-card:hover{transform:translateY(-3px);border-color:#83bfb0;box-shadow:var(--shadow)}.card-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:23px}.card-icon{background:var(--accent-tint);color:var(--accent);width:34px;height:34px;display:grid;place-items:center;border-radius:8px}.card-icon svg{width:19px;height:19px}.card-step{font:10px/1.5 var(--mono);color:var(--subtle)}.path-card:nth-child(2) .card-icon{background:#f6eee4;color:#a67740}.path-card:nth-child(3) .card-icon{background:#eef0fa;color:#7179b3}[data-theme=dark] .path-card:nth-child(2) .card-icon{background:#3a3025;color:#d8b280}[data-theme=dark] .path-card:nth-child(3) .card-icon{background:#2c3043;color:#a9afde}.path-card h3{font-size:16px;margin-bottom:9px;font-weight:650}.path-card p{font-size:12px;color:var(--muted);line-height:1.8;margin-bottom:20px}.card-bottom{display:flex;align-items:center;justify-content:space-between;font-size:10px;color:var(--muted);border-top:1px solid var(--line);padding-top:13px}.card-bottom svg{width:14px;height:14px;color:var(--accent)}.home-bottom{display:grid;grid-template-columns:1.35fr 1fr;gap:38px;margin-top:35px}.quick-links{display:grid;grid-template-columns:1fr 1fr;gap:0 20px}.quick-link{display:flex;align-items:center;gap:11px;padding:12px 0;border-bottom:1px solid var(--line);color:var(--text);font-size:12px}.quick-link>svg{width:16px;height:16px;color:var(--muted)}.quick-link>span{margin-left:auto;color:var(--subtle);font:11px var(--mono)}.quick-link:hover{color:var(--accent)}.learning-note{background:var(--surface);border:1px solid var(--line);padding:23px 24px;border-radius:9px}.learning-note>small{display:flex;align-items:center;gap:7px;color:var(--accent);font-size:10px;letter-spacing:.5px}.learning-note small svg{width:14px;height:14px}.learning-note h3{font-size:17px;margin:13px 0 10px}.learning-note p{font-size:12px;color:var(--muted);line-height:1.8;margin-bottom:16px}.learning-note a{font-size:12px;display:inline-flex;align-items:center;gap:10px}.learning-note a svg{width:14px;height:14px}.recent-reading{margin-top:22px;padding:14px 17px;border:1px dashed var(--line);border-radius:6px;font-size:12px;display:flex;gap:10px;align-items:center;color:var(--muted)}.recent-reading a{margin-left:auto;display:flex;align-items:center;gap:5px}.recent-reading svg{width:15px;height:15px}
/* Reading layout */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 190px;gap:42px;max-width:1250px;margin:auto;padding:37px 42px 0 48px}.article-column{min-width:0;max-width:850px}.breadcrumbs{font-size:10px;color:var(--subtle);display:flex;gap:9px;align-items:center;flex-wrap:wrap;margin-bottom:28px}.breadcrumbs a{color:var(--muted)}.breadcrumbs svg{width:11px;height:11px}.article-header{padding-bottom:25px;border-bottom:1px solid var(--line);margin-bottom:26px}.article-kicker{font-size:10px;letter-spacing:1px;color:var(--accent);font-weight:600;margin-bottom:13px;display:flex;gap:8px;align-items:center}.article-kicker:before{content:"";width:5px;height:5px;border-radius:50%;background:var(--accent)}.article-header h1{font-size:34px;line-height:1.35;margin:0 0 20px;font-weight:680;overflow-wrap:anywhere}.article-meta{display:flex;gap:15px;align-items:center;font-size:11px;color:var(--muted)}.article-meta .meta-readtime{display:inline-flex;align-items:center;gap:5px}.meta-readtime svg{width:13px;height:13px}.article-tools{margin-left:auto;display:flex;gap:4px}.article-tools .icon-button{width:29px;height:29px}.article-tools .icon-button svg{width:16px;height:16px}.read-button{border:1px solid var(--line);border-radius:5px;padding:3px 9px;font-size:10px;color:var(--muted);display:inline-flex;gap:5px;align-items:center}.read-button svg{width:12px;height:12px}.read-button[aria-pressed=true]{background:var(--accent-tint);color:var(--accent);border-color:var(--accent-tint)}.article-content{font-size:var(--article-size);line-height:1.95;overflow-wrap:anywhere}.article-content>p:first-child{font-size:17px;color:var(--muted)}.article-content h2{font-size:24px;line-height:1.5;margin:38px 0 20px;font-weight:650}.article-content h3{font-size:21px;line-height:1.5;margin:35px 0 17px;font-weight:650;border-top:1px solid var(--line);padding-top:25px}.article-content h4{font-size:17px;line-height:1.55;margin:25px 0 13px;font-weight:650}.article-content p{margin:0 0 19px}.article-content b,.article-content strong{font-weight:650}.article-content em{font-style:normal;color:var(--accent)}.article-content a{border-bottom:1px solid #73b5aa55;transition:border .15s}.article-content a:hover{border-bottom-color:var(--accent)}.article-content a.anchor-link{border:0;margin-left:8px;color:var(--subtle);opacity:0;font-weight:400;font-size:.7em}.article-content h2:hover>a.anchor-link,.article-content h3:hover>a.anchor-link,.article-content h4:hover>a.anchor-link,.article-content a.anchor-link:focus{opacity:1}.article-content ul,.article-content ol{padding-left:1.6em;margin:10px 0 21px}.article-content li{margin:.4em 0;padding-left:.15em}.article-content li::marker{color:var(--accent)}.article-content li>ul,.article-content li>ol{margin:4px 0 10px}.article-content dl{margin:17px 0 23px}.article-content dt{font-weight:650;margin:23px 0 7px;color:var(--text)}.article-content dd{margin:0 0 14px 16px;border-left:2px solid var(--line);padding-left:18px}.article-content dd>p{margin-bottom:12px}.article-content .menu{margin-top:28px}.article-content .menu:first-child{margin-top:0}.article-content .aside,.article-content .note,.article-content .description{padding:17px 21px;margin:24px 0;border-left:3px solid var(--accent);border-radius:0 7px 7px 0;background:var(--accent-tint);font-size:14px;color:var(--text)}.article-content .aside p:last-child,.article-content .description p:last-child{margin-bottom:0}.article-content .aside .image_center{background:var(--bg)}.article-content .red{color:#af4646}.article-content .exonly,.article-content .std_ex,.article-content .spec{display:inline-block;vertical-align:middle;font-size:10px;line-height:1.8;letter-spacing:.3px;background:var(--accent-tint);border:1px solid var(--line);padding:1px 6px;border-radius:4px;color:var(--accent)}.article-content .clear{clear:both}.article-content .image_center{margin:22px 0;padding:20px 14px;text-align:center;border:1px solid var(--line);border-radius:8px;background:#fafbfc;overflow-x:auto}.article-content .image_center img{vertical-align:middle}.article-content .image_left{float:left;margin:6px 22px 17px 0;max-width:46%;padding:10px;background:#fafbfc;border:1px solid var(--line);border-radius:7px}.article-content .image_right{float:right;margin:6px 0 17px 22px;max-width:46%;padding:10px;background:#fafbfc;border:1px solid var(--line);border-radius:7px}.article-content img{vertical-align:middle;object-fit:contain}.article-content img.zoomable{cursor:zoom-in;border-radius:3px}.article-content img.inline-icon{max-height:28px;width:auto;vertical-align:-6px}.article-content font{font-size:inherit;color:inherit}.article-content .figure font{font-size:12px}.article-content hr{border:0;border-top:1px solid var(--line);margin:28px 0}.article-content .table-scroll{overflow-x:auto;margin:22px 0;max-width:100%;border:1px solid var(--line);border-radius:7px}.article-content table{border-collapse:collapse;margin:0;width:100%;font-size:13px;line-height:1.8;background:var(--bg)}.article-content th{background:var(--surface);font-weight:600;text-align:left;color:var(--text)}.article-content th,.article-content td{padding:11px 14px;border:0;border-bottom:1px solid var(--line);vertical-align:top;overflow-wrap:anywhere}.article-content tr:last-child>td,.article-content tr:last-child>th{border-bottom:0}.article-content tr:nth-child(even)>td{background:color-mix(in srgb,var(--surface) 55%,var(--bg))}.article-content table table{font-size:12px;width:auto;min-width:0}.article-content table table td{padding:5px 9px;background:transparent!important}.article-content .table-scroll.figure-wrap{border:0;border-radius:0;background:transparent}.article-content table.figure{border:0;background:transparent;width:auto;margin:auto;max-width:100%;min-width:0}.article-content table.figure th,.article-content table.figure td{border:0;background:transparent;text-align:center;vertical-align:middle;padding:7px 10px}.article-content table.figure img{max-width:100%;height:auto}.article-content .table-scroll:not(.figure-wrap) img{max-width:min(100%,430px)}.article-content .index>div:first-child{display:none}.article-content .nav_page{display:none}.article-content .api-method{border:1px solid var(--line);border-radius:7px;overflow:hidden;margin:24px 0}.article-content .api-method>.method-signature{font:13px/1.8 var(--mono);background:var(--surface);border-bottom:1px solid var(--line);padding:13px 18px;overflow-wrap:anywhere;color:var(--accent)}.article-content .api-method>.method-body{padding:18px}.article-content .api-method .table-scroll{margin:12px 0}.article-content .api-method p:last-child{margin-bottom:0}.article-content .api-method dt{font-size:12px;color:var(--muted);margin-top:14px}.article-content .api-method dd{margin:0;border:0;padding:0}.article-content .api-method td,.article-content .api-method th{font-size:12px;padding:7px 10px}.article-content .api-method .method-signature b{font-weight:650}.article-content .identifier{font-family:var(--mono);font-size:.87em}.article-content .legacy-missing{color:var(--muted)}.translation-note{font-size:11px;line-height:1.85;color:var(--muted);border:1px solid var(--line);border-radius:7px;padding:15px 18px;margin-top:35px;background:var(--surface)}.translation-note svg{width:14px;height:14px;vertical-align:-2px;margin-right:5px;color:var(--accent)}.article-pagination{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:30px;padding-top:28px;border-top:1px solid var(--line)}.page-link{border:1px solid var(--line);border-radius:8px;padding:16px 18px;color:var(--text);display:flex;flex-direction:column;gap:6px;min-width:0;font-size:13px}.page-link:hover{border-color:var(--accent);background:var(--accent-tint)}.page-link small{font-size:10px;color:var(--muted);display:flex;align-items:center;gap:5px}.page-link small svg{width:12px;height:12px}.page-link.next{text-align:right}.page-link.next small{justify-content:flex-end}.page-link strong{font-weight:550;overflow-wrap:anywhere}.page-link.empty{visibility:hidden}.article-toc{position:sticky;top:calc(var(--header) + 36px);align-self:start;font-size:11px;max-height:calc(100vh - var(--header) - 65px);overflow:auto;scrollbar-width:thin;scrollbar-color:var(--line) transparent;padding:0 0 25px 0}.toc-title{font-weight:600;color:var(--text);font-size:11px;display:flex;gap:8px;align-items:center;margin:4px 0 15px}.toc-title svg{width:13px;height:13px;color:var(--muted)}.toc-list{margin:0;padding:0;list-style:none}.toc-list li{margin:0}.toc-list a{display:block;padding:5px 9px 5px 13px;border-left:1px solid var(--line);color:var(--muted);line-height:1.7}.toc-list a:hover{color:var(--accent)}.toc-list .toc-sub a{padding-left:23px;font-size:10px}.toc-list a.active{color:var(--accent);border-left:2px solid var(--accent);padding-left:12px;background:var(--accent-tint);border-radius:0 3px 3px 0}.toc-list .toc-sub a.active{padding-left:22px}.toc-controls{margin-top:25px;padding-top:17px;border-top:1px solid var(--line)}.toc-controls>span{font-size:10px;color:var(--subtle);display:block;margin-bottom:10px}.font-size-control{display:flex;align-items:center;gap:10px}.font-size-control button{border:1px solid var(--line);border-radius:5px;width:30px;height:28px;line-height:1;font-size:11px}.font-size-control output{font-size:10px;color:var(--muted);width:32px;text-align:center}.font-size-control button:hover{background:var(--surface)}.api-overview{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.api-overview>a{display:block;padding:14px;border:1px solid var(--line);border-radius:7px;font:12px/1.8 var(--mono)}.api-overview>a:hover{background:var(--surface);border-color:var(--accent)}
/* Search and image preview */
dialog{padding:0;border:1px solid var(--line);border-radius:12px;color:var(--text);background:var(--bg);box-shadow:0 30px 100px #10273340}dialog::backdrop{background:#14233055;backdrop-filter:blur(4px)}.search-dialog{width:min(680px,calc(100vw - 30px));max-height:min(690px,85vh);margin:12vh auto auto;overflow:hidden}.search-box{display:flex;align-items:center;gap:13px;padding:18px 22px;border-bottom:1px solid var(--line)}.search-box>svg{width:20px;height:20px;color:var(--accent);flex-shrink:0}.search-box input{border:0;outline:none!important;color:var(--text);background:transparent;flex:1;width:100%;min-width:0;font-size:16px}.search-box input::placeholder{color:var(--subtle);font-size:14px}.kbd-button{font:11px/1.8 var(--mono);color:var(--muted);border:1px solid var(--line);border-radius:4px;padding:0 6px}.search-filters{display:flex;gap:7px;padding:14px 21px 3px}.filter-chip{font-size:11px;padding:3px 10px;border:1px solid transparent;color:var(--muted);border-radius:5px}.filter-chip.active{background:var(--accent-tint);color:var(--accent);font-weight:650}.filter-chip:hover{border-color:var(--line)}.search-status{font-size:11px;color:var(--subtle);padding:11px 23px 8px}.search-results{max-height:440px;overflow-y:auto;padding:0 12px 12px}.search-result{display:block;padding:13px 12px;margin:3px 0;border-radius:7px;color:var(--text);border:1px solid transparent}.search-result:hover,.search-result.selected{background:var(--surface);border-color:var(--line)}.result-heading{display:flex;align-items:center;gap:10px}.result-heading strong{font-size:14px;font-weight:600;overflow-wrap:anywhere}.result-heading small{font-size:10px;color:var(--subtle);margin-left:auto;white-space:nowrap}.result-excerpt{font-size:12px;color:var(--muted);margin:6px 0 0;line-height:1.7;overflow-wrap:anywhere}mark{background:#f5e8b5;color:#594917;padding:0 1px;border-radius:2px}[data-theme=dark] mark{background:#6c5a2f;color:#fff1b9}.search-footer{border-top:1px solid var(--line);font-size:10px;color:var(--subtle);padding:11px 22px;display:flex;justify-content:space-between;gap:10px}.search-footer kbd{font-size:9px;line-height:16px;min-width:16px;margin-right:3px}.search-empty{padding:35px;text-align:center;color:var(--muted);font-size:13px}.search-empty b{display:block;color:var(--text);font-size:15px;margin-bottom:9px}.image-dialog{max-width:94vw;max-height:94vh;width:max-content;padding:40px 25px 15px;background:#f4f6f8;text-align:center;color:#5e6c7a}.image-dialog>img{display:block;max-width:calc(94vw - 50px);max-height:calc(94vh - 115px);object-fit:contain;margin:auto}.image-dialog>p{font-size:11px;margin:13px 0 0;max-width:600px}.image-close{position:absolute;right:5px;top:3px;color:#5e6c7a}.back-to-top{position:fixed;right:25px;bottom:24px;width:38px;height:38px;border:1px solid var(--line);background:var(--bg);box-shadow:var(--shadow);z-index:20}.toast{position:fixed;bottom:30px;left:calc(50% + 100px);transform:translate(-50%,20px);opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;padding:10px 20px;border:1px solid var(--line);border-radius:7px;background:var(--text);color:var(--bg);font-size:12px;z-index:100}.toast.visible{opacity:1;transform:translate(-50%,0)}.not-found{max-width:650px;margin:auto;padding:100px 35px;text-align:center}.not-found .error-code{font:70px var(--mono);letter-spacing:-5px;color:var(--accent);margin-bottom:18px}.not-found h1{font-size:28px}.not-found p{color:var(--muted);font-size:14px;margin-bottom:25px}
@media(min-width:1600px){.home-container{padding-top:50px}.home-hero{min-height:380px}.hero-copy h1{font-size:48px}.article-layout{padding-top:48px}}
@media(max-width:1250px){:root{--sidebar:225px}.site-header{padding-left:18px;padding-right:22px}.brand-word{font-size:16px}.header-actions{gap:14px}.home-container{padding:35px 38px 0}.home-hero{gap:12px;min-height:310px}.hero-copy h1{font-size:36px}.article-layout{grid-template-columns:minmax(0,1fr) 155px;gap:26px;padding-left:35px;padding-right:25px}.article-header h1{font-size:30px}.path-card{padding:20px 16px}.stats-strip{gap:23px}.home-bottom{gap:25px}.site-footer{margin-left:35px;margin-right:35px}}
@media(max-width:1050px){.article-layout{display:block;padding-right:38px}.article-toc{display:none}.search-trigger{width:245px}.header-link{display:none}.hero-copy h1{font-size:32px}.hero-visual{aspect-ratio:.9}.home-hero{grid-template-columns:1.3fr 1fr}.hero-copy>p{font-size:13px}.stats-strip{gap:17px}.stats-strip .stat-note{display:none}.path-cards{gap:10px}.path-card h3{font-size:14px}.path-card p{font-size:11px}.home-bottom{display:block}.learning-note{margin-top:28px}.hero-note{font-size:8px;right:0}.home-eyebrow{font-size:9px}.site-footer>span:nth-child(2){max-width:260px}}
@media(max-width:780px){:root{--sidebar:0px;--header:60px}.site-header{padding:0 16px;gap:12px}.header-brand{gap:9px}.mobile-menu{display:inline-grid}.brand-mark{width:27px}.brand-word{font-size:15px}.brand-word>span{font-size:8px;margin-top:4px;letter-spacing:2px}.version-badge{font-size:9px;padding:0 4px}.header-actions{gap:8px}.header-divider{display:none}.search-trigger{width:35px;height:35px;padding:0;display:grid;place-items:center;border:0;background:transparent}.search-trigger svg{width:20px;height:20px}.search-trigger>span,.search-trigger>kbd{display:none}.sidebar{width:275px;transform:translateX(-100%);transition:transform .2s}.sidebar.is-open{transform:translateX(0)}.sidebar-backdrop{position:fixed;inset:var(--header) 0 0;background:#152d4b50;z-index:25}.main-shell{margin-left:0}.home-container{padding:30px 27px 0}.home-hero{min-height:305px;gap:15px}.hero-copy h1{font-size:35px}.hero-visual{aspect-ratio:1}.home-eyebrow{margin-bottom:20px}.stats-strip{justify-content:space-between;padding:16px 0;margin-bottom:29px}.stat{gap:6px}.stat strong{font-size:18px}.stat span{font-size:9px}.path-cards{gap:12px}.card-top{margin-bottom:18px}.path-card{padding:18px 16px}.article-layout{padding:27px 27px 0}.article-header h1{font-size:29px}.article-content{font-size:16px}.article-content>p:first-child{font-size:16px}.breadcrumbs{margin-bottom:22px}.site-footer{margin:32px 27px 0;gap:10px;font-size:9px}.site-footer>span:nth-child(2){max-width:none}.site-footer a{margin-left:auto}.back-to-top{right:15px;bottom:18px}.toast{left:50%;max-width:90vw;width:max-content}.search-dialog{margin-top:8vh}.search-results{max-height:52vh}.image-dialog{padding-left:15px;padding-right:15px}.home-bottom{display:grid;grid-template-columns:1fr 1fr;gap:23px}.learning-note{margin:0;padding:20px}.quick-links{display:block}.article-content table{font-size:12px}.article-content th,.article-content td{padding:9px 11px}}
@media(max-width:560px){.brand{gap:6px}.brand-word{font-size:14px}.site-header{padding:0 10px}.header-brand{gap:4px}.version-badge{margin-left:1px}.home-container{padding:29px 22px 0}.home-hero{display:block;min-height:0;margin-bottom:28px}.home-eyebrow{font-size:9px;letter-spacing:1.5px}.hero-copy h1{font-size:35px;letter-spacing:-1.2px;margin-bottom:17px}.hero-copy>p{font-size:13px;max-width:340px;margin-bottom:22px}.hero-visual{display:none}.hero-buttons{gap:10px}.button-primary,.button-secondary{font-size:11px;padding:10px 14px}.stats-strip{gap:10px;flex-wrap:wrap;justify-content:flex-start;margin-bottom:28px}.stat{flex:1 1 auto;min-width:29%}.stat strong{font-size:19px}.stat:last-of-type{display:none}.section-heading h2{font-size:18px}.section-heading>span{font-size:9px}.path-cards{grid-template-columns:1fr;gap:12px}.path-card{padding:18px 20px;display:grid;grid-template-columns:40px 1fr;gap:0 15px}.card-top{grid-row:1/4;margin:0;display:block}.card-step{display:none}.path-card h3{font-size:16px;margin:0 0 5px}.path-card p{font-size:12px;margin:0 0 10px}.card-bottom{border:0;padding:0;font-size:10px}.path-card .card-icon{width:36px;height:36px}.home-bottom{display:block;margin-top:29px}.quick-links{display:grid}.quick-link{font-size:11px}.learning-note{margin-top:25px;padding:22px}.article-layout{padding:23px 21px 0}.article-header h1{font-size:27px;line-height:1.45}.article-header{padding-bottom:20px;margin-bottom:22px}.article-meta{font-size:10px;gap:8px;flex-wrap:wrap}.article-content{line-height:1.95}.article-content h2{font-size:22px}.article-content h3{font-size:20px;margin-top:28px;padding-top:23px}.article-content h4{font-size:17px}.article-content dd{margin-left:3px;padding-left:13px}.article-content .image_left,.article-content .image_right{float:none;max-width:100%;text-align:center;margin:18px 0}.article-content .image_center{padding:13px 9px}.article-content .aside{padding:14px 16px}.article-content table.figure td{padding:5px 6px}.article-content table.figure{min-width:max-content;max-width:800px}.article-content table.figure img{max-width:350px}.article-content .table-scroll:not(.figure-wrap)>table{min-width:420px}.article-content table.property{min-width:620px!important}.article-content .api-method>.method-body{padding:14px}.article-content .api-method .table-scroll>table{min-width:330px}.article-pagination{gap:10px}.page-link{padding:12px;font-size:11px}.page-link small{font-size:9px}.translation-note{font-size:10px;padding:13px 15px}.api-overview{grid-template-columns:1fr}.site-footer{margin-left:22px;margin-right:22px;display:grid;grid-template-columns:1fr auto;gap:7px}.site-footer>span:nth-child(2){grid-column:1/3;grid-row:2}.search-dialog{margin-top:5vh;max-height:90vh}.search-box{padding:17px 15px;gap:10px}.search-box input{font-size:14px}.search-box input::placeholder{font-size:12px}.search-filters{padding:12px 13px 3px}.filter-chip{padding:3px 9px}.search-status{padding-left:16px}.search-results{padding:0 7px 10px;max-height:60vh}.result-heading{align-items:flex-start;gap:6px}.result-heading strong{font-size:13px}.result-heading small{font-size:9px;max-width:70px;white-space:normal}.search-footer{padding:10px 15px}.search-footer>span:last-child{font-size:9px}.recent-reading{font-size:11px;align-items:flex-start}.recent-reading a{display:block;text-align:right}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}
@media print{:root{--bg:#fff;--text:#111;--muted:#555;--line:#ddd;--accent:#124b47;--surface:#f8f8f8;--sidebar:0px;--header:0px}.site-header,.sidebar,.article-toc,.reading-progress,.article-tools,.article-pagination,.site-footer,.back-to-top,dialog,.skip-link,.toast{display:none!important}.main-shell{margin:0;padding:0}.article-layout{display:block;padding:0}.article-column{max-width:100%}.article-content{font-size:11pt;line-height:1.6}.article-header h1{font-size:24pt}.article-content h3{break-after:avoid}.article-content img{max-height:450px}.article-content .table-scroll{overflow:visible;break-inside:avoid}.article-content table{font-size:9pt}.article-content table.figure{min-width:0;max-width:100%}.article-content .image_center{break-inside:avoid}.article-content a.anchor-link{display:none}.breadcrumbs{display:none}.translation-note{font-size:9pt}.home-container{padding:0}}
/* Compact table of contents and scroll cues for narrow reading layouts. */
.mobile-toc{display:none;margin:0 0 24px;border:1px solid var(--line);border-radius:7px;background:var(--surface)}
.mobile-toc summary{display:flex;align-items:center;gap:9px;cursor:pointer;list-style:none;padding:12px 15px;font-size:12px;color:var(--muted)}
.mobile-toc summary::-webkit-details-marker{display:none}.mobile-toc summary svg{width:15px;height:15px}.mobile-toc summary svg:last-child{margin-left:auto;transition:transform .2s}.mobile-toc[open] summary svg:last-child{transform:rotate(90deg)}
.mobile-toc .toc-list{max-height:300px;overflow-y:auto;margin:0 14px 14px;font-size:12px}
.table-scroll.scrollable::before{content:"左右滑动查看完整表格 →";display:block;position:sticky;left:0;font-size:10px;padding:7px 12px;color:var(--muted);background:var(--surface);border-bottom:1px solid var(--line)}
.table-scroll.figure-wrap.scrollable::before{border-radius:5px;margin-bottom:7px;border:0}
@media(max-width:1050px){.mobile-toc{display:block}}
@media print{.mobile-toc,.table-scroll.scrollable::before{display:none!important}}