:root{font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;color:#20242b;background:#fff;font-synthesis:none;--blue:#0052d9;--blue-soft:#edf4ff;--line:#e3e7ed;--muted:#5b6677;--surface:#f7f9fc;--ink:#17212f}
*{box-sizing:border-box}
body{margin:0;font-size:15px;line-height:1.8}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
button,input{font:inherit}
button{cursor:pointer}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--blue);outline-offset:3px}
[hidden]{display:none!important}
.skip{position:fixed;left:16px;top:-100px;background:#fff;border:1px solid var(--blue);padding:10px 16px;z-index:50}
.skip:focus{top:8px}
header{min-height:72px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:24px;padding:12px max(24px,calc((100% - 1320px)/2));background:#fff;position:sticky;top:0;z-index:20}
.brand{font-size:23px;font-weight:750;color:var(--ink);display:flex;gap:11px;align-items:center;white-space:nowrap;line-height:1}
.brand:hover{text-decoration:none}
.brand .brand-mark{display:grid;place-items:center;width:30px;height:30px;background:var(--blue);color:white;font-size:18px;font-weight:650;border-radius:6px}
.brand .brand-context{font-size:13px;font-weight:500;color:var(--muted);border-left:1px solid var(--line);padding:7px 0 7px 14px;margin-left:4px}
header nav{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
header nav a,header button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;color:#35445a;font-size:13px}
button{background:#fff;border:1px solid #c6d0df;border-radius:5px;padding:7px 13px;min-height:44px}
button:hover{border-color:var(--blue);color:var(--blue)}
h1,h2,h3{color:var(--ink);line-height:1.4;scroll-margin-top:100px}
h1{font-size:34px;letter-spacing:-.025em;font-weight:650;margin:0 0 24px}
h2{font-size:24px;font-weight:620;margin:42px 0 16px}
h3{font-size:18px;font-weight:600;margin:28px 0 12px}
p{margin:14px 0}
ul,ol{padding-left:24px}
li{margin:7px 0}
code{font-family:"Cascadia Code",Consolas,monospace;font-size:.88em;padding:2px 5px;border-radius:3px;background:#eff3f8;overflow-wrap:anywhere}
pre{padding:18px;background:var(--surface);border:1px solid var(--line);border-radius:6px;overflow:auto;line-height:1.7}
pre code{padding:0;background:none;overflow-wrap:normal}
blockquote{border-left:3px solid #84aeed;margin:24px 0;padding:1px 18px;color:#435570;background:#f4f8ff}
table{display:block;width:100%;overflow:auto;border-collapse:collapse;margin:24px 0;font-size:14px}
th,td{border:1px solid var(--line);text-align:left;padding:11px 14px;vertical-align:top}
th{background:var(--surface);font-weight:600}
article img{max-width:100%;height:auto;border:1px solid var(--line);border-radius:4px}
article .doc-screenshot{display:block;max-width:100%}
article .doc-screenshot img{display:block;max-width:100%;height:auto}
hr{border:0;border-top:1px solid var(--line);margin:32px 0}
footer{border-top:1px solid var(--line);margin-top:48px;padding:22px 0;color:var(--muted);font-size:12px;display:flex;justify-content:space-between;gap:20px}
footer a{display:inline-flex;align-items:center;min-height:28px}
/* One reading frame for all help pages. */
.layout{display:grid;grid-template-columns:224px minmax(0,744px) 184px;gap:38px;max-width:1320px;margin:auto;padding:32px 24px 48px;align-items:start}
.navigation{font-size:13px;position:sticky;top:104px;max-height:calc(100vh - 128px);overflow:auto;padding:0 14px 16px 0;overscroll-behavior:contain}
.navigation summary{display:none}
.navigation nav{display:flex;flex-direction:column;gap:22px}
.guide-filter{display:block;margin-bottom:22px}
.guide-filter span{display:block;font-size:12px;color:var(--muted);margin-bottom:6px}
.guide-filter input{width:100%;min-height:40px;font-size:13px;border:1px solid #cbd5e2;border-radius:5px;padding:8px 10px;background:white;color:var(--ink)}
.nav-group{display:flex;flex-direction:column;gap:3px}
.nav-group-title{margin:0 0 4px;padding:0 10px;font-size:12px;color:#4e5d73;font-weight:650}
.navigation a{display:block;padding:8px 10px;color:#4a5b72;border-radius:4px;line-height:1.55;overflow-wrap:anywhere}
.navigation a:hover{background:var(--surface);text-decoration:none;color:var(--blue)}
.navigation a[aria-current]{background:var(--blue-soft);color:var(--blue);font-weight:600;box-shadow:inset 2px 0 var(--blue)}
.guide-empty{font-size:13px;color:var(--muted);margin:12px 10px}
.layout main{min-width:0;padding:4px 0 0}
.doc-breadcrumb{display:flex;align-items:center;gap:9px;font-size:12px;color:var(--muted);margin:0 0 24px;min-height:24px}
.doc-breadcrumb a{display:inline-flex;align-items:center;min-height:24px}
.layout article{overflow-wrap:anywhere}
.layout article>h1:first-child{margin-top:0}
.layout article>p:first-of-type{font-size:13px;color:var(--muted);margin-bottom:24px}
.layout aside{font-size:12px;color:var(--muted);position:sticky;top:104px;max-height:calc(100vh - 128px);overflow:auto;padding:4px 0 0;overscroll-behavior:contain}
.layout aside p{font-weight:650;margin:0 0 12px;color:#35445a}
.layout aside a{display:block;color:var(--muted);border-left:1px solid var(--line);padding:7px 0 7px 13px;line-height:1.55;overflow-wrap:anywhere}
.layout aside a:hover{color:var(--blue);border-color:var(--blue);text-decoration:none}
.doc-scroll{max-width:100%;margin:24px 0;overflow:auto;overscroll-behavior-inline:contain;border-radius:6px}
.doc-scroll:focus-visible{outline:3px solid var(--blue);outline-offset:3px}
.doc-scroll table{display:table;overflow:visible;margin:0;width:100%}
.doc-scroll pre{margin:0;overflow:visible}
.doc-scroll th,.doc-scroll td{min-width:8rem}
.doc-scroll code{overflow-wrap:normal}
.doc-diagram{max-width:100%;margin:24px 0}
.doc-diagram-canvas{padding:16px;border:1px solid var(--line);background:#fff}
.doc-diagram-canvas svg{display:block;max-width:none;height:auto}
.doc-diagram-status{font-size:13px;color:var(--muted)}
.doc-diagram-source{font-size:13px;margin-top:10px}
.doc-diagram-source summary{cursor:pointer;color:var(--muted);min-height:32px}
.doc-diagram-source .doc-scroll{max-height:28rem;margin:10px 0 0}
/* Homepage: a concrete example, a short first run and task-based help. */
.home{max-width:1200px;margin:auto;padding:0 28px}
.home h2{font-size:29px;font-weight:650;line-height:1.35;margin:0 0 14px;letter-spacing:-.02em}
.home h3{font-size:18px;font-weight:620;line-height:1.45}
.home p{color:var(--muted)}
.home .eyebrow{font-size:11px;font-weight:650;letter-spacing:.12em;color:var(--blue);margin:0 0 14px}
.home .hero{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:56px;padding:64px 0 52px;align-items:center}
.hero-copy{min-width:0}
.home .hero h1{font-size:clamp(38px,4.5vw,54px);line-height:1.18;font-weight:680;margin:0 0 24px;letter-spacing:-.035em}
.home .intro{font-size:16px;line-height:1.9;max-width:540px;margin:0}
.home .actions{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin:28px 0 16px}
.home .button{display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:44px;padding:10px 18px;gap:16px;border:1px solid #c4d0e2;border-radius:5px;background:#fff;color:#2c4365;font-size:14px;font-weight:600;line-height:1.5}
.home .button:hover{background:#f1f6ff;border-color:#a2bde7;text-decoration:none}
.home .button.primary{background:var(--blue);border-color:var(--blue);color:#fff}
.home .button.primary:hover{background:#0045b8;border-color:#0045b8}
.home .caption{font-size:12px;color:var(--muted)}
#downloads{scroll-margin-top:96px}
.home .hero-visual{display:flex;flex-direction:column;min-width:0;margin:0;padding:24px;background:var(--surface);border:1px solid #dce4ef;border-radius:8px}
.hero-visual figcaption{display:flex;flex-direction:column;gap:8px;padding:0 0 20px}
.example-label{font-size:10px;letter-spacing:.11em;color:#566882;font-weight:650}
.hero-visual figcaption strong{font-size:16px;line-height:1.55;font-weight:620;color:#2b405e}
.flow-preview{list-style:none;padding:0;margin:0;display:grid;gap:0;border-top:1px solid #dce4ef}
.flow-preview li{display:grid;grid-template-columns:24px minmax(0,1fr) auto;gap:10px;align-items:start;margin:0;padding:18px 0;border-bottom:1px solid #dce4ef}
.flow-step{color:#586b86;font-size:11px;font-variant-numeric:tabular-nums;padding-top:2px}
.flow-label{display:block;font-size:11px;color:var(--blue);font-weight:600;margin-bottom:3px}
.flow-preview strong{display:block;font-size:15px;line-height:1.5;font-weight:620;color:#263a57}
.flow-preview p{font-size:12px;line-height:1.65;margin:5px 0 0}
.flow-value{align-self:center;font-size:18px;letter-spacing:-.03em;color:#23426d;font-weight:650;font-variant-numeric:tabular-nums;padding-left:5px}
.home .flow-note{font-size:11px;line-height:1.7;margin:16px 0 0;color:#566882}
.release-strip{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px 24px;padding:15px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.release-strip p{font-size:12px;margin:0}
.project-status{display:flex;align-items:center;flex-wrap:wrap;gap:8px}
.project-status a{display:inline-flex;align-items:center;min-height:28px}
.project-status img{display:block;height:20px;max-width:100%}
.home-section{padding:48px 0;border-bottom:1px solid var(--line);scroll-margin-top:96px}
.screenshot-controls{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;flex-wrap:wrap;margin:24px 0 18px}
.screenshot-scenes,.screenshot-views{display:flex;gap:8px;flex-wrap:wrap}
.screenshot-controls button{min-height:44px;min-width:44px;padding:10px 15px;background:#fff;border:1px solid #bdcce0;border-radius:5px;color:#294468;font:inherit;font-size:14px;cursor:pointer}
.screenshot-controls button[aria-pressed="true"]{background:var(--blue);border-color:var(--blue);color:#fff}
.running-screenshot{margin:0;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:var(--surface)}
.running-screenshot>a{display:flex;align-items:center;justify-content:center;min-height:240px;padding:20px}
.running-screenshot img{display:block;max-width:100%;width:auto;height:auto;max-height:680px;object-fit:contain;box-shadow:0 8px 24px #12345514}
.running-screenshot figcaption{padding:12px 20px;background:#fff;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}
@media(max-width:760px){.running-screenshot>a{padding:10px;min-height:180px}.running-screenshot img{max-height:570px}.screenshot-controls{gap:12px}.screenshot-controls button{padding:10px 12px}}
.section-heading{max-width:740px;margin-bottom:28px}
.section-heading>p:last-child{font-size:15px;line-height:1.85;margin:0}
.start-steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:30px;list-style:none;padding:0;margin:0 0 22px}
.start-steps li{display:grid;grid-template-columns:26px minmax(0,1fr);gap:12px;align-items:start;min-width:0;margin:0}
.step-number{display:grid;place-items:center;width:26px;height:26px;background:var(--blue-soft);color:var(--blue);border-radius:4px;font-size:12px;font-weight:650;margin-top:2px}
.start-steps h3{margin:0 0 9px;font-size:16px}
.start-steps p{margin:0;font-size:13px;line-height:1.85}
.text-link{display:inline-flex;align-items:center;min-height:36px;font-size:14px;font-weight:500}
.task-section{display:grid;grid-template-columns:minmax(0,.68fr) minmax(0,1fr);gap:70px;align-items:start}
.task-section .section-heading{margin:6px 0 0}
.entry-grid{display:flex;flex-direction:column}
.entry-grid>a{display:grid;grid-template-columns:22px minmax(0,1fr) 20px;gap:14px;padding:22px 0;border-bottom:1px solid var(--line);color:inherit;min-width:0}
.entry-grid>a:first-child{padding-top:0}
.entry-grid>a:last-child{padding-bottom:0;border-bottom:0}
.entry-grid>a:hover{text-decoration:none}
.entry-grid>a:hover h3{color:var(--blue)}
.home .index{font-size:11px;font-weight:600;color:#536276;letter-spacing:.04em;line-height:1.8}
.entry-grid .index{padding-top:3px}
.entry-grid h3{margin:0 0 8px;font-size:17px}
.entry-grid p{margin:0;font-size:14px;line-height:1.8}
.entry-grid .arrow{color:var(--blue);font-size:19px;line-height:1.6}
.output-groups{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px}
.output-groups article{min-width:0}
.output-groups h3{margin:0 0 10px;font-size:17px}
.output-groups p{font-size:14px;line-height:1.8;margin:0 0 18px}
.protocols{display:flex;flex-wrap:wrap;gap:6px;list-style:none;padding:0;margin:0}
.protocols li{font-size:11px;line-height:1.5;margin:0;padding:4px 8px;background:var(--surface);border:1px solid var(--line);border-radius:3px;color:#455a77}
.recording-section{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.85fr);gap:64px;padding:38px;background:#f3f7fd;border:1px solid #dce5f2;border-radius:7px;margin:40px 0 0}
.recording-section p{max-width:520px;font-size:14px;line-height:1.85}
.recording-path{list-style:none;display:grid;align-content:center;gap:0;margin:0;padding:0}
.recording-path li{display:grid;grid-template-columns:24px minmax(0,1fr);column-gap:12px;padding:15px 0;margin:0;border-bottom:1px solid #d6e0ef}
.recording-path li:last-child{border-bottom:0}
.recording-path .index{grid-row:span 2;padding-top:3px}
.recording-path strong{font-size:15px;font-weight:600;color:#293e5d}
.recording-path li>span:not(.index){font-size:13px;color:#4f6381;margin-top:3px}
.package-section{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:40px;padding:48px 0;border-bottom:1px solid var(--line)}
.package-section p{max-width:740px;font-size:14px;line-height:1.85}
.package-actions{display:flex;flex-direction:column;align-items:stretch;min-width:180px;gap:10px}
.documentation-section{border-bottom:0}
.documentation-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px 30px}
.documentation-links a{display:flex;flex-direction:column;min-width:0;padding:12px 0 16px;border-bottom:1px solid var(--line)}
.documentation-links strong{font-size:15px;font-weight:600}
.documentation-links span{font-size:13px;color:var(--muted);margin-top:5px;line-height:1.75}
.more-links{display:flex;flex-wrap:wrap;gap:8px 26px;padding-top:20px}
.more-links a{display:inline-flex;align-items:center;min-height:32px;font-size:13px}
.home footer{margin:0;padding:22px 0 28px}
.offline-languages{padding:16px;background:var(--blue-soft);border:1px solid #dbe6f6}
@media(max-width:1150px){.layout{grid-template-columns:210px minmax(0,1fr);gap:30px}.layout aside{display:none}.home .hero{gap:30px}.task-section{gap:40px}.recording-section{gap:32px}}
@media(max-width:760px){
header{position:relative;padding:14px 20px;gap:10px;flex-wrap:wrap}
header nav{gap:4px 18px;row-gap:4px}
header nav a,header button{font-size:12px}
.brand{font-size:22px}.brand .brand-context{font-size:12px}
h1,h2,h3{scroll-margin-top:24px}
.layout{display:block;padding:18px 20px 32px}
.navigation{position:static;max-height:none;overflow:visible;border:1px solid var(--line);border-radius:6px;padding:0;margin-bottom:28px;background:var(--surface)}
.navigation summary{display:list-item;cursor:pointer;color:#35445a;padding:10px 14px;min-height:44px}
.navigation nav{display:grid;grid-template-columns:1fr 1fr;position:static;gap:18px;padding:0 12px 14px}
.navigation .guide-filter{padding:0 14px;margin:4px 0 16px}
.navigation:not([open]) nav,.navigation:not([open]) .guide-filter,.navigation:not([open]) .guide-empty{display:none}
.navigation a{padding:8px 10px;background:#fff}
.doc-breadcrumb{margin-bottom:18px}
h1{font-size:28px}h2{font-size:23px}
.layout article{font-size:14px;line-height:1.9}
footer{flex-direction:column;gap:8px}
.home{padding:0 20px}
.home .hero{grid-template-columns:1fr;gap:28px;padding:36px 0}
.home .hero h1{font-size:clamp(30px,8vw,42px)}
.home .intro{font-size:15px}
.home .hero-visual{padding:20px}
.home h2{font-size:25px}
.home-section{padding:34px 0;scroll-margin-top:24px}
.section-heading{margin-bottom:24px}
.section-heading>p:last-child{font-size:14px}
.start-steps{grid-template-columns:1fr;gap:22px}
.start-steps li{grid-template-columns:26px minmax(0,1fr)}
.task-section{grid-template-columns:1fr;gap:24px}
.task-section .section-heading{margin:0}
.output-groups{grid-template-columns:1fr;gap:22px}
.output-groups article+article{border-top:1px solid var(--line);padding-top:22px}
.recording-section{grid-template-columns:1fr;gap:16px;padding:24px;margin-top:32px}
.recording-section h2 br{display:none}
.package-section{grid-template-columns:1fr;gap:20px;padding:34px 0}
.package-actions{align-items:flex-start;min-width:0}
.documentation-links{grid-template-columns:1fr 1fr;gap:8px 20px}
.release-strip{gap:4px 20px;padding:12px 0}
.home footer{flex-direction:column;gap:6px}
}
@media(max-width:380px){.home .hero-visual{padding:16px}.flow-preview li{grid-template-columns:19px minmax(0,1fr) auto;gap:8px}.flow-value{font-size:16px}.documentation-links{grid-template-columns:1fr}.recording-section{padding:20px}.navigation nav{grid-template-columns:1fr}.home .actions{gap:10px}.home .button{padding:10px 14px}}
@media(pointer:coarse){.home .text-link,.home .more-links a,.home .project-status a,footer a{min-height:44px}}
@media(prefers-reduced-motion:no-preference){a,button{transition:background .15s,color .15s,border-color .15s}}

/* Product entry cards share the workbench's restrained blue surfaces. */
.edition-section{padding:0 0 44px}
.edition-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:24px}
.edition-card{min-width:0;padding:24px;border:1px solid var(--line);border-radius:8px;background:var(--surface)}
.edition-tag{display:inline-flex;min-height:26px;align-items:center;font-size:12px;font-weight:650;color:var(--blue)}
.edition-card h3{margin:10px 0 12px}
.edition-card p{font-size:14px;line-height:1.85;margin:0 0 18px}
@media(max-width:760px){.edition-grid{grid-template-columns:minmax(0,1fr)}.edition-card{padding:20px}.edition-section{padding-bottom:32px}}