:root{color-scheme:light;--bg:#eef1f4;--panel:#fbfcfd;--raised:#fff;--text:#263445;--muted:#617184;--line:#d5dee7;--grid:#e4eaf0;--active:#e5edf7;--accent:#315f96;--accent-text:#fff;--positive:#35634e;color:var(--text);background:var(--bg);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:14px;line-height:1.5}*{box-sizing:border-box}body,h1,h2,h3,p{margin:0}button,input,select{font:inherit}button,select{color:var(--text)}button,a,input,select,summary{-webkit-tap-highlight-color:transparent}button{cursor:pointer;background:var(--raised);border:1px solid var(--line);border-radius:4px;min-height:35px;padding:7px 12px;transition:background .12s}button:hover{background:var(--active)}button:disabled{opacity:.45;cursor:default}button.primary{color:var(--accent-text);background:var(--accent);border-color:var(--accent)}button.primary:hover{background:#264d7b}button.subtle{background:0 0}button.small-button{min-height:28px;padding:4px 8px;font-size:11px}select{appearance:none;border:1px solid var(--line);background-color:var(--raised);min-width:0;max-width:100%;min-height:34px;color:var(--text);text-overflow:ellipsis;cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12' fill='none'%3E%3Cpath d='m3 4.5 3 3 3-3' stroke='%23617184' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");background-position:right 11px center;background-repeat:no-repeat;background-size:12px;border-radius:5px;padding:6px 34px 6px 10px;font-size:12px;line-height:1.5;transition:border-color .12s,background-color .12s,box-shadow .12s;box-shadow:0 1px 2px #2634450a}select:enabled:hover{background-color:#f6f9fc;border-color:#a7b7c8}select:focus-visible{border-color:var(--accent);box-shadow:0 0 0 3px #315f961a}select:disabled{color:var(--muted);background-color:var(--bg);box-shadow:none;opacity:.65;cursor:default}@supports (appearance:base-select){select,select::picker(select){appearance:base-select}select{background-image:none;align-items:center;gap:12px;padding-inline-end:12px}select::picker-icon{content:"";border-right:1.5px solid var(--muted);border-bottom:1.5px solid var(--muted);flex:none;width:7px;height:7px;margin-block-start:-3px;margin-inline-start:auto;transition:transform .12s;transform:rotate(45deg)}select:open{border-color:var(--accent);background-color:var(--raised);box-shadow:0 0 0 3px #315f961a}select:open::picker-icon{margin-block-start:3px;transform:rotate(225deg)}select::picker(select){min-inline-size:anchor-size(self-inline);background:var(--raised);max-block-size:min(320px,60dvh);max-inline-size:calc(100vw - 24px);color:var(--text);font:inherit;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:#bcc9d6 transparent;border:1px solid #c8d3df;border-radius:7px;margin-block:6px;padding:5px;overflow-y:auto;box-shadow:0 12px 30px #2634451f,0 2px 6px #2634450d}select option{min-block-size:34px;color:var(--text);font:inherit;white-space:normal;overflow-wrap:anywhere;cursor:pointer;background:0 0;border-radius:4px;align-items:center;gap:12px;padding:8px 10px;line-height:1.5;display:flex}select option:checked{color:var(--accent);background:var(--active);font-weight:500}select option:enabled:hover,select option:focus-visible{outline:2px solid var(--accent);outline-offset:-2px;background:#edf2f7}select option:disabled{color:var(--muted);opacity:.55;cursor:default}select option::checkmark{color:var(--accent);order:1;margin-inline-start:auto}}button:focus-visible,a:focus-visible,summary:focus-visible,select:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:3px}a{color:var(--accent)}[hidden]{display:none!important}.muted{color:var(--muted)}.small{font-size:12px}.mono{font-variant-numeric:tabular-nums;font-family:ui-monospace,SFMono-Regular,Consolas,monospace}.section-label{letter-spacing:.07em;color:var(--muted);font-size:11px;font-weight:500}.skip-link{z-index:9;background:var(--raised);padding:10px;position:absolute;top:6px;left:10px;transform:translateY(-200%)}.skip-link:focus{transform:none}.site-header{background:var(--raised);border-bottom:1px solid var(--line)}.header-inner{grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);align-items:center;gap:40px;max-width:1360px;min-height:74px;margin:auto;padding:17px 32px;display:grid}.brand{letter-spacing:-.6px;color:var(--text);white-space:nowrap;align-items:center;gap:10px;font-size:19px;font-weight:600;text-decoration:none;display:flex}.brand-mark{align-items:flex-end;gap:3px;height:22px;display:flex}.brand-mark i{background:var(--accent);border-radius:1px;width:4px;height:13px}.brand-mark i:nth-child(2){height:22px}.brand-mark i:nth-child(3){height:17px}.device-nav{align-items:center;gap:8px;font-size:13px;display:flex}.device-nav>a,.coming-soon{color:var(--text);white-space:nowrap;border-radius:4px;padding:8px 14px;text-decoration:none}.device-nav a[aria-current]{background:var(--bg)}.coming-soon{color:var(--muted)}.coming-soon small{color:var(--muted);margin-left:3px;font-size:10px}.language{color:var(--muted);justify-self:end;margin-left:auto;font-size:12px}.main-shell{max-width:1360px;margin:auto;padding:27px 32px 24px}.advertisement-slot{background:var(--panel);border:1px dashed var(--line);max-width:728px;min-height:90px;color:var(--muted);text-align:center;place-content:center;margin:0 auto 24px;font-size:11px;display:grid}.page-heading{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:18px;margin-bottom:23px;display:flex}.eyebrow{letter-spacing:.11em;color:var(--muted);margin-bottom:4px;font-size:10px}h1{letter-spacing:-.9px;margin-bottom:7px;font-size:29px;font-weight:550;line-height:1.25}.page-description{color:var(--muted);font-size:13px}.page-actions{flex-wrap:wrap;align-items:center;gap:7px;display:flex}.page-actions button{font-size:12px}.page-actions button span{margin-left:6px}.workbench{background:var(--panel);border:1px solid var(--line);border-radius:5px;grid-template-columns:170px minmax(0,1fr);display:grid;overflow:clip}.test-sidebar{border-right:1px solid var(--line);flex-direction:column;padding:20px 11px;display:flex}.test-sidebar>h2{margin-bottom:14px;padding:0 10px}.test-nav{gap:5px;display:grid}.test-nav a{color:var(--text);border-radius:4px;align-items:center;gap:10px;padding:10px;font-size:12px;text-decoration:none;display:flex}.test-nav a:hover{background:var(--bg)}.test-nav a[aria-current]{background:var(--active);color:var(--accent);font-weight:500}.test-index{color:var(--muted);font:11px ui-monospace,monospace}.sidebar-bottom{border-top:1px solid var(--line);margin-top:auto;padding:18px 9px 0;font-size:11px}.sidebar-bottom p+p{margin-top:8px}.local-note{color:var(--muted);align-items:center;gap:6px;margin-top:13px;font-size:10px;display:flex}.local-dot{background:var(--positive);border-radius:50%;width:5px;height:5px}.workspace-content{min-width:0}.workspace-toolbar{border-bottom:1px solid var(--line);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;min-height:49px;padding:13px 19px;display:flex}h2{font-size:13px;font-weight:550}.capture-status{color:var(--muted);align-items:center;gap:7px;font-size:11px;display:flex}.capture-status:before{content:"";background:var(--muted);border-radius:50%;width:6px;height:6px}.capture-status[data-state=active]:before{background:var(--accent)}.capture-status[data-state=paused]:before{background:#9a7b46}.capture-status[data-state=guide]{color:var(--accent)}.capture-status[data-state=guide]:before{background:var(--accent)}.test-area-title{font-size:13px;font-weight:550}.test-area-instruction{color:var(--muted);margin:5px 0 9px;font-size:11px;line-height:1.6}.input-area{background:#f1f5f9;border:1px solid #b9c9d9;border-radius:4px;transition:border-color .12s,box-shadow .12s}.input-area[data-area-capture=active],.input-area[data-guided=true]{border-color:var(--accent);box-shadow:inset 0 0 0 1px #315f9633}.input-area[data-guided=true]{box-shadow:0 0 0 3px #315f9626}.input-area[data-area-capture=paused]{box-shadow:none;background:#f0f2f4;border-style:dashed;border-color:#bfc6cd}.area-status,.area-label{z-index:1;pointer-events:none;font-size:10px;line-height:17px;position:absolute;top:7px}.area-status{color:var(--muted);background:#fbfcfdeb;border-radius:3px;align-items:center;gap:6px;padding:1px 6px;display:flex;left:8px}.area-status:before{content:"";background:var(--muted);border-radius:50%;width:5px;height:5px}[data-area-capture=active] .area-status{color:var(--accent)}[data-area-capture=active] .area-status:before{background:var(--accent)}[data-area-capture=paused] .area-status:before{background:#9a7b46}.area-label{color:var(--muted);letter-spacing:.06em;left:10px}.workbench-top{grid-template-columns:minmax(0,1.18fr) minmax(315px,1fr);display:grid}.model-panel{border-right:1px solid var(--line);flex-direction:column;min-width:0;padding:14px 18px;display:flex}.panel-heading{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;min-height:26px;display:flex}.model-viewport{isolation:isolate;height:290px;position:relative;overflow:hidden}.model-viewport canvas{touch-action:none;cursor:grab;width:100%;height:100%;display:block;position:absolute;inset:0}.model-viewport canvas:active{cursor:grabbing}.model-grid{z-index:-1;background-image:linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px);opacity:.65;pointer-events:none;background-size:26px 26px;position:absolute;inset:90px 5px 10px;transform:perspective(480px)rotateX(62deg)rotate(-12deg)}.model-status{text-align:center;color:var(--muted);pointer-events:none;background:var(--panel);place-content:center;padding:28px;font-size:12px;display:grid;position:absolute;inset:15px}.wheel-direction{border:1px solid var(--line);background:var(--active);color:var(--accent);pointer-events:none;border-radius:4px;padding:5px 8px;font:11px ui-monospace,monospace;position:absolute;top:9px;right:4px}.wheel-direction:empty{display:none}.model-caption{border-top:1px solid var(--line);color:var(--muted);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:7px;padding:10px 0 12px;font-size:10px;display:flex}.model-caption .mono{color:var(--accent);font-size:11px}.button-register{grid-template-columns:repeat(5,minmax(0,1fr));gap:5px;margin-top:auto;display:grid}.model-appearance{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;padding:0 0 10px;font-size:11px;display:flex}.model-appearance>span>span{margin-left:6px}.shell-swatches{gap:5px;display:flex}button.shell-swatch{background:0 0;border-color:#0000;place-items:center;width:30px;min-height:28px;padding:5px;display:grid}button.shell-swatch span{background:var(--swatch);border-radius:50%;width:16px;height:16px;box-shadow:inset 0 0 0 1px #0000001f}button.shell-swatch:hover{background:var(--active)}button.shell-swatch[aria-pressed=true]{border-color:var(--accent);background:var(--active)}.button-state{text-align:center;border:1px solid var(--line);color:var(--muted);border-radius:3px;padding:8px 3px 7px;font-size:10px}.button-state strong{color:var(--text);margin-bottom:3px;font-size:11px;font-weight:500;display:block}.button-state[data-held=true]{color:var(--accent);background:var(--active);border-color:#a8bfd9}.button-state[data-held=true] strong{color:var(--accent)}.button-state[data-observed=true]:not([data-held=true]){border-bottom:2px solid #92afa0}.measurement-panel{min-width:0;padding:14px 20px 17px}.live-label{color:var(--accent);letter-spacing:.03em;font-size:10px}.metrics{grid-template-columns:1fr 1fr;gap:18px 13px;padding:17px 0 18px;display:grid}.metric-label{color:var(--muted);font-size:11px}.metric-value{letter-spacing:-1px;margin-top:2px;font:29px/1.4 ui-monospace,SFMono-Regular,Consolas,monospace}.metric-value small{color:var(--muted);letter-spacing:0;margin-left:3px;font:11px/1.5 -apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}.readout{border-top:1px solid var(--line);gap:8px;padding:12px 0;display:grid}.readout-row{flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:12px;font-size:11px;display:flex}.readout-row>span:first-child{color:var(--muted)}.readout-row>span:last-child{text-align:right;overflow-wrap:anywhere}.test-options{border-top:1px solid var(--line);color:var(--muted);flex-wrap:wrap;align-items:center;gap:10px;padding:10px 0;font-size:11px;display:flex}.test-options label{align-items:center;gap:5px;display:flex}.test-options input{accent-color:var(--accent);width:14px;height:14px;margin:0}.test-options button{font-size:11px}.test-instruction{border-top:1px solid var(--line);color:var(--muted);padding-top:10px;font-size:11px;line-height:1.6}.analysis-panel{border-top:1px solid var(--line);padding:14px 19px 9px}.chart-container{height:235px;margin-top:5px;position:relative}.chart-container .area-status{left:auto;right:8px}.chart-container canvas{touch-action:none;width:100%;height:calc(100% - 28px);margin-top:28px;display:block}.chart-footer{color:var(--muted);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;padding-top:4px;font-size:10px;display:flex}.event-panel{border-top:1px solid var(--line);padding:12px 19px 7px}.event-actions{align-items:center;gap:13px;display:flex}.event-table-wrap{overflow-x:auto}table{border-collapse:collapse;text-align:left;table-layout:fixed;width:100%;margin-top:8px;font-size:11px}th,td{border-bottom:1px solid var(--grid);overflow-wrap:anywhere;padding:8px 7px}th{color:var(--muted);font-weight:400}td{font-variant-numeric:tabular-nums;vertical-align:top;font-family:ui-monospace,SFMono-Regular,Consolas,monospace}th:first-child,td:first-child{width:12%;padding-left:0}th:nth-child(2){width:23%}th:nth-child(3){width:18%}.empty-table{color:var(--muted);padding-top:22px;padding-bottom:22px;font-family:inherit}.method-strip{border-top:1px solid var(--line);color:var(--muted);background:#eaf0f5;align-items:baseline;gap:12px;padding:13px 19px;font-size:11px;display:flex}.method-strip strong{white-space:nowrap;color:var(--text);font-weight:500}.session-message{color:var(--accent);font-size:12px}.session-message:not(:empty){padding:12px 0 0}.page-footer{color:var(--muted);flex-wrap:wrap;justify-content:space-between;gap:10px;margin-top:16px;font-size:11px;display:flex}.help-section{border-top:1px solid var(--line);color:var(--muted);margin-top:23px;padding-top:15px;font-size:12px}.help-section summary{cursor:pointer;width:fit-content;color:var(--text)}.help-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;padding:20px 0 4px;display:grid}.help-grid h2{color:var(--text);margin-bottom:8px}.help-grid p+p{margin-top:10px}.notice{border:1px solid var(--line);margin-bottom:18px;padding:16px}@media (width>=1450px){.model-viewport{height:315px}}@media (width<=1080px){.workbench{grid-template-columns:150px minmax(0,1fr)}.workbench-top{grid-template-columns:minmax(0,1.05fr) minmax(280px,1fr)}.main-shell{padding:24px}.header-inner{padding:17px 24px}.measurement-panel{padding:14px 16px}.model-panel{padding:14px}.model-viewport{height:270px}.model-caption{font-size:10px}.page-actions button{font-size:11px}.help-grid{gap:18px}}@media (width<=850px){.workbench-top{grid-template-columns:1fr}.model-panel{border-right:0;border-bottom:1px solid var(--line)}.model-viewport{height:290px}.metrics{grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.metric-value{font-size:25px}.metric-value small{margin-left:0;display:block}.readout{grid-template-columns:1fr 1fr;gap:9px 18px}.readout-row{align-items:flex-start}.help-grid{grid-template-columns:1fr}.page-actions{gap:6px}.header-inner{gap:24px}.device-nav{gap:1px}.device-nav>a,.coming-soon{padding:7px 10px}.coming-soon small{display:none}}@media (width<=600px){.header-inner{grid-template-columns:minmax(0,1fr) auto;gap:12px;padding:16px}.brand{font-size:18px}.device-nav{grid-area:2/1/auto/-1;justify-content:center}.device-nav>a,.coming-soon{padding:7px 12px}.language{grid-area:1/2;margin-left:auto}.main-shell{padding:20px 12px}.page-heading{gap:15px;margin-bottom:18px}h1{font-size:26px}.page-actions{width:100%}.page-actions button{flex:1;padding:8px 6px}.workbench{grid-template-columns:1fr}.test-sidebar{border-right:0;border-bottom:1px solid var(--line);padding:10px}.test-sidebar>h2{margin-bottom:4px;padding:0 4px}.test-nav{flex-wrap:wrap;gap:3px;display:flex}.test-nav a{padding:8px 7px;font-size:11px}.test-index,.sidebar-bottom{display:none}.workspace-toolbar,.model-panel{padding:11px 12px}.model-viewport{height:280px}.metrics{grid-template-columns:1fr 1fr;gap:16px}.metric-value{font-size:28px}.readout{grid-template-columns:1fr}.measurement-panel{padding:14px 13px}.analysis-panel,.event-panel{padding-left:12px;padding-right:12px}.chart-container{height:223px}.panel-heading .small{font-size:11px}.event-actions{gap:8px}.event-actions .section-label{font-size:9px}.method-strip{padding:12px;display:block}.method-strip strong{margin-bottom:5px;display:block}.model-caption{gap:6px}.model-caption span,.button-state strong{font-size:10px}.button-state{font-size:9px}th,td{padding:8px 4px;font-size:10px}.page-footer{font-size:10px}.help-section{margin-top:20px}.help-grid{gap:20px}.chart-footer{font-size:10px}select{font-size:16px}}@media (pointer:coarse){button,button.small-button,.device-nav>a,.test-nav a,.test-options label,select{min-height:44px}@supports (appearance:base-select){select option{min-block-size:44px}}button.shell-swatch{width:44px;min-height:44px}}@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}.language{position:relative}.language>summary{cursor:pointer;white-space:nowrap;min-height:36px;padding:8px 10px}.language-menu{z-index:20;border:1px solid var(--line);background:var(--raised);border-radius:6px;width:230px;max-width:calc(100vw - 32px);padding:8px;position:absolute;top:calc(100% + 6px);right:0;box-shadow:0 4px 16px #2634451f}.language-menu nav>a,.language-menu nav>span{min-height:40px;color:var(--text);border-radius:4px;justify-content:space-between;align-items:center;padding:8px 10px;text-decoration:none;display:flex}.language-menu nav>a:hover,.language-menu nav>a:focus-visible,.language-menu [aria-current]{background:var(--active)}.language-menu p{margin:6px 10px;font-size:11px;line-height:1.6}html[lang=zh-Hans]{overflow-wrap:anywhere;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif}html[lang=zh-Hans] .section-label,html[lang=zh-Hans] .eyebrow{letter-spacing:.04em}.language-dialog{width:min(420px,100vw - 32px);max-width:100%;color:var(--text);background:var(--raised);border:1px solid var(--line);border-radius:8px;padding:24px}.language-dialog::backdrop{background:#26344559}.language-dialog h2{font-size:19px}.language-dialog p{margin:12px 0 20px}.language-dialog form{justify-content:flex-end;gap:10px;display:flex}