/* Preserve the established recruiter-facing case layout. Native CSS.
   DESIGN_VARIANCE 6 / MOTION_INTENSITY 3 / VISUAL_DENSITY 3.
   Warm yellow is drawn from the supplied character's ears. The raster is original.
   Layers: content 0, chapter navigation 10, header 20, skip link 30. */
:root{--paper:#f4f4f5;--ink:#2c2b29;--muted:#68655e;--accent:#7a5b20;--line:#dcdad4;--tint:#ebe6d9;--header:rgba(244,244,245,.96);color-scheme:light;font-family:"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;font-synthesis:none}
:root[data-theme=dark]{--paper:#201f23;--ink:#f0eeea;--muted:#bcb7ac;--accent:#e0c27e;--line:#454137;--tint:#302c23;--header:rgba(32,31,35,.96);color-scheme:dark}
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.skip{position:fixed;top:-80px;left:24px;z-index:30;background:var(--paper);padding:12px 18px}.skip:focus{top:12px}.masthead{position:absolute;top:0;left:0;right:0;z-index:20;min-height:80px;padding:16px 3.4vw;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;align-items:center;gap:16px;min-height:44px}.brand b{font-size:34px;letter-spacing:-.12em}.brand span{font-size:12px;font-weight:600;letter-spacing:.06em}.header-actions{display:flex;align-items:center;gap:24px;font-size:13px}.back,.theme-toggle{display:flex;align-items:center;min-height:44px;white-space:nowrap}.theme-toggle{padding:6px 12px;border:1px solid var(--line);border-radius:999px}.back:hover,.case-footer a:hover{color:var(--accent)}
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[data-theme=dark] .character-art{mix-blend-mode:normal;background:#f4f4f1;border-radius:20px}[data-theme=dark] .digital-body .character-art{border-radius:14px}
@keyframes digital-respond{0%,100%{transform:translateY(0) scale(1)}35%{transform:translateY(-7px) scale(1.035,.98)}70%{transform:translateY(-2px) scale(.99,1.02)}}
@keyframes hardware-respond{0%,100%{transform:scale(1)}40%{transform:scale(1.055)}75%{transform:scale(.99)}}
@keyframes bridge-respond{0%,100%{opacity:.45}40%,70%{opacity:1}}
@media(prefers-reduced-motion:no-preference){.is-demo-active .digital-body{animation:digital-respond 1.1s ease-out}.is-demo-active .hardware-core{animation:hardware-respond 1.1s ease-out}.is-demo-active .sync-bridge{animation:bridge-respond 1.1s ease-out}}
@media(min-width:1100px) and (max-height:800px){.chapter{padding-block:52px 38px}.overview{padding-top:94px;row-gap:24px}.overview h1{font-size:86px}.overview h1 span{font-size:29px;margin-top:18px}.project-kind{margin-bottom:18px}.lead{font-size:16px;margin-top:18px}.contribution{margin-top:22px}.overview-art{max-width:465px}.product-definition{padding-top:18px}.product-definition h2{font-size:21px}.section-heading{margin-bottom:24px}.section-heading h2{font-size:37px}.section-heading>p{font-size:15px;margin-top:14px}.requirement-tabs button{min-height:68px}.requirement-tabs b{font-size:18px}.requirement-stage{padding-top:26px}.requirement-panel{min-height:300px}.requirement-copy h3{font-size:29px}.requirement-copy>p{font-size:15px;margin-top:16px}.requirement-details{gap:12px;margin-top:20px}.requirement-map{min-height:250px}.scenario-tabs{margin-bottom:18px}.sync-visual{min-height:214px;margin-bottom:20px}.hardware-core{width:128px}.digital-body{height:128px;width:195px}.hardware-state,.digital-state{margin-top:18px}.scenario-explanation{padding-top:18px}.scenario-explanation h3{font-size:20px}.scenario-explanation p{font-size:14px;margin-top:7px}.demo-status{margin-top:12px}}
@media(max-width:1099px){main,.case-footer{margin-left:195px;margin-right:30px}.chapters{left:28px;width:145px}.chapter{padding-block:64px 46px}.overview{padding-top:100px;gap:26px 4%}.overview h1{font-size:78px}.overview h1 span{font-size:26px}.lead{font-size:16px}.contribution dd{font-size:14px}.desktop-break{display:none}.product-definition{gap:10px 30px;grid-template-columns:1fr 1.2fr}.product-definition h2{font-size:21px}.product-definition p{font-size:14px}.section-heading h2{font-size:36px}.requirement-tabs{gap:14px}.requirement-tabs button{padding:12px 10px}.requirement-tabs b{font-size:18px}.requirement-tabs button>span{font-size:12px}.requirement-panel{gap:6%;grid-template-columns:1.1fr .9fr}.requirement-copy h3{font-size:28px}.requirement-copy>p{font-size:15px}.requirement-details{font-size:13px}.requirement-details>div{grid-template-columns:60px 1fr;gap:12px}.requirement-map{gap:25px;grid-template-columns:minmax(80px,.9fr) 1.1fr}.map-origin::after{width:13px}.map-origin b{font-size:15px}.map-branches{padding-left:14px}.map-branches>div::before{width:14px;left:-14px}.map-branches b{font-size:17px}.sync-visual{gap:20px;grid-template-columns:1fr .6fr 1fr}.hardware-core{width:130px}.digital-body{height:130px;width:195px}.scenario-explanation h3{font-size:21px}.scenario-explanation p{font-size:14px}.simulate{gap:20px;padding-inline:14px}}
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@media(max-width:389px){.masthead{padding-inline:16px}main,.case-footer{margin-inline:16px}.chapters{padding-inline:16px;gap:22px}.overview h1{font-size:68px}.overview h1 span{font-size:25px}.section-heading h2{font-size:29px}.requirement-tabs b{font-size:14px}.requirement-tabs button>span{font-size:10px}.scenario-tabs{gap:18px}.scenario-tabs button{font-size:13px}.sync-visual{gap:8px}.hardware-core{width:88px}.digital-body{height:88px;width:132px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}
@media(prefers-reduced-transparency:reduce){.chapters{background:var(--paper);backdrop-filter:none}}