:root{--xbc-ink:#181411;--xbc-muted:#665f58;--xbc-paper:#f6f1e8;--xbc-line:rgba(24,20,17,.15);--xbc-night:#17120f;--xbc-coral:#e65f56;--xbc-orange:#e99735;--xbc-radius:26px;--xbc-shadow:0 24px 80px rgba(64,36,22,.16)}
html{scroll-behavior:smooth}body.xbc-case{margin:0;color:var(--xbc-ink);background:var(--xbc-paper);font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",sans-serif}.xbc-case *,.xbc-case *:before,.xbc-case *:after{box-sizing:border-box}.xbc-case img{display:block;max-width:100%}.xbc-case button{font:inherit}.xbc-case a:focus-visible,.xbc-case button:focus-visible{outline:3px solid #ffb34f;outline-offset:4px}.xbc-shell{width:min(1280px,calc(100% - 64px));margin:auto}
.xbc-hero{position:relative;min-height:min(900px,calc(100vh - 72px));overflow:hidden;color:#fff9ef;background:radial-gradient(circle at 82% 14%,rgba(229,99,81,.22),transparent 30%),linear-gradient(132deg,#130e0c,#25140e 52%,#17110f)}.xbc-orb{position:absolute;border-radius:50%;filter:blur(10px);pointer-events:none}.xbc-orb-a{width:520px;height:520px;right:-180px;bottom:-260px;background:rgba(236,143,48,.16)}.xbc-orb-b{width:280px;height:280px;left:42%;top:-170px;background:rgba(222,86,79,.13)}
.xbc-hero-grid{position:relative;z-index:1;min-height:min(900px,calc(100vh - 72px));display:grid;grid-template-columns:minmax(360px,.78fr) minmax(620px,1.22fr);align-items:center;gap:54px;padding:96px 0 88px}.xbc-hero-copy{position:relative;z-index:3}.xbc-eyebrow{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:26px}.xbc-eyebrow span{padding:7px 11px;border:1px solid rgba(255,255,255,.2);border-radius:999px;color:#eadfd7;font-size:11px;font-weight:700;letter-spacing:.09em}.xbc-kicker{margin:0 0 16px;color:#eebd8f;font-size:15px}.xbc-hero h1{margin:0;max-width:620px;font-size:clamp(60px,6.9vw,112px);line-height:.93;letter-spacing:-.065em;font-weight:770}.xbc-lead{max-width:590px;margin:30px 0 0;color:#ddd0c7;font-size:20px;line-height:1.75}.xbc-hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:36px}.xbc-hero-actions a{display:inline-flex;min-height:48px;align-items:center;padding:0 20px;color:#1b120e;background:#f4a648;border-radius:999px;text-decoration:none;font-size:14px;font-weight:800}.xbc-hero-actions a+a{color:#fff8ef;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.22)}.xbc-hero-boundary{max-width:520px;margin:24px 0 0;padding-left:14px;border-left:2px solid rgba(238,164,86,.7);color:#a99b91;font-size:13px;line-height:1.7}
.xbc-hero-stage{position:relative;min-height:600px;perspective:1200px}.xbc-tv{position:absolute;z-index:1;top:74px;left:2%;width:95%;padding:12px;border:2px solid #38302b;border-radius:22px;background:#090807;box-shadow:0 50px 100px rgba(0,0,0,.52);transform:rotateY(-7deg) rotateX(2deg)}.xbc-tv:after{content:"";position:absolute;left:32%;right:32%;bottom:-18px;height:17px;background:linear-gradient(#3a332e,#15110f);clip-path:polygon(28% 0,72% 0,100% 100%,0 100%)}.xbc-tv img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:12px}.xbc-tv-camera{position:absolute;z-index:2;left:50%;top:3px;width:5px;height:5px;border-radius:50%;background:#594f49}.xbc-phone{position:absolute;z-index:4;width:174px;padding:7px;border-radius:31px;background:#0f0e0d;box-shadow:0 28px 70px rgba(0,0,0,.45)}.xbc-phone img{width:100%;aspect-ratio:390/844;object-fit:cover;border-radius:25px}.xbc-phone-left{left:0;bottom:-6px;transform:rotate(-5deg)}.xbc-phone-right{right:2%;bottom:-28px;transform:rotate(4deg)}.xbc-stage-note{position:absolute;z-index:5;top:8px;right:33px;display:grid;grid-template-columns:30px auto;padding:12px 15px;border:1px solid rgba(255,255,255,.18);border-radius:18px;background:rgba(35,24,19,.72);backdrop-filter:blur(14px)}.xbc-stage-note span{grid-row:1/3;color:#f1a44c;font-size:12px;font-weight:800}.xbc-stage-note strong{font-size:14px}.xbc-stage-note small{margin-top:3px;color:#b9aaa0;font-size:11px}.xbc-stage-note-b{top:auto;right:0;bottom:54px}
.xbc-facts{border-bottom:1px solid var(--xbc-line);background:#fffaf2}.xbc-fact-grid{display:grid;grid-template-columns:repeat(4,1fr)}.xbc-fact-grid>div{padding:36px 26px 34px;border-left:1px solid var(--xbc-line)}.xbc-fact-grid>div:last-child{border-right:1px solid var(--xbc-line)}.xbc-fact-grid span{display:block;color:#8f7a68;font-size:11px;font-weight:800;letter-spacing:.08em}.xbc-fact-grid strong{display:block;margin-top:10px;font-size:20px}.xbc-fact-grid p{margin:8px 0 0;color:var(--xbc-muted);font-size:13px;line-height:1.6}.xbc-jump{position:sticky;z-index:40;top:0;border-bottom:1px solid var(--xbc-line);background:rgba(248,244,236,.92);backdrop-filter:blur(18px)}.xbc-jump .xbc-shell{display:flex;overflow-x:auto;scrollbar-width:none}.xbc-jump a{flex:none;padding:17px 18px;color:#625950;text-decoration:none;font-size:12px;font-weight:750}
.xbc-section{padding:120px 0;border-bottom:1px solid var(--xbc-line)}.xbc-section-head{display:grid;grid-template-columns:230px 1fr;gap:42px;align-items:start;margin-bottom:64px}.xbc-section-head>p{margin:10px 0 0;color:#9d5b3d;font-size:12px;font-weight:850;letter-spacing:.09em}.xbc-section-head h2{max-width:980px;margin:0;font-size:clamp(38px,4.6vw,68px);line-height:1.07;letter-spacing:-.045em}.xbc-section-head-light>p{color:#f2a44c}.xbc-section-head-light h2{color:#fff8ef}
.xbc-context-grid{display:grid;grid-template-columns:1.16fr .84fr;gap:76px;align-items:start}.xbc-context-copy>p{max-width:760px;margin:0 0 24px;color:#4f4943;font-size:18px;line-height:1.9}.xbc-dropcap:first-letter{float:left;margin:8px 12px 0 0;color:#bd453f;font-size:72px;line-height:.75;font-weight:800}.xbc-role-note{margin-top:46px;padding:28px;border:1px solid #dacdbf;border-radius:var(--xbc-radius);background:#fffaf3}.xbc-role-note span{color:#9b5b3f;font-size:11px;font-weight:800}.xbc-role-note strong{display:block;margin-top:10px;font-size:22px}.xbc-role-note p{margin:10px 0 0;color:var(--xbc-muted);line-height:1.75}.xbc-stat-panel{padding:42px;border-radius:32px;color:#fff7ec;background:linear-gradient(145deg,#25201b,#4a271a);box-shadow:var(--xbc-shadow)}.xbc-stat-panel>p:first-child{margin:0;color:#e1a87d;font-size:12px;font-weight:800}.xbc-stat-panel>strong{display:block;margin-top:30px;font-size:clamp(58px,7vw,96px);line-height:.85;letter-spacing:-.055em}.xbc-stat-panel>strong small{font-size:22px}.xbc-stat-panel h3{margin:34px 0 0;font-size:24px;line-height:1.45}.xbc-stat-panel p{color:#d5c4b7;line-height:1.8}.xbc-stat-panel a{display:inline-block;margin-top:16px;color:#f2a650;font-size:13px}.xbc-principles{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:72px}.xbc-principles article{min-height:230px;padding:30px;border:1px solid var(--xbc-line);border-radius:var(--xbc-radius);background:#f8f2e9}.xbc-principles span,.xbc-safety-grid span,.xbc-result-grid span{color:#bd573f;font-size:12px;font-weight:900}.xbc-principles h3{margin:45px 0 10px;font-size:24px}.xbc-principles p{margin:0;color:var(--xbc-muted);line-height:1.75}
.xbc-system-section,.xbc-safety-section,.xbc-evidence-section{color:#f6eee5;background:var(--xbc-night)}.xbc-system-map{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.xbc-system-map>article,.xbc-system-core,.xbc-system-data{padding:30px;border:1px solid rgba(255,255,255,.13);border-radius:24px;background:rgba(255,255,255,.04)}.xbc-system-map span,.xbc-system-core small{color:#df9b61;font-size:10px;font-weight:850;letter-spacing:.1em}.xbc-system-map strong,.xbc-system-core strong{display:block;margin-top:24px;font-size:26px}.xbc-system-map p{margin:8px 0 0;color:#b8aaa0;line-height:1.65}.xbc-system-person,.xbc-system-core{grid-row:span 2;min-height:360px}.xbc-system-person{display:flex;flex-direction:column;justify-content:flex-end;background:linear-gradient(165deg,rgba(231,95,83,.2),rgba(255,255,255,.035))!important}.xbc-system-core{color:#19120e;background:linear-gradient(145deg,#eaa655,#e66b57)!important}.xbc-system-core small{color:rgba(34,17,10,.65)}.xbc-system-core strong{font-size:44px}.xbc-system-core ul{display:flex;flex-wrap:wrap;gap:9px;padding:0;margin:42px 0 0;list-style:none}.xbc-system-core li{padding:8px 12px;border:1px solid rgba(20,10,5,.2);border-radius:999px;font-size:12px;font-weight:800}.xbc-system-data{grid-column:1/-1;display:grid;grid-template-columns:180px 1fr;align-items:center}.xbc-device-logic{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:18px}.xbc-device-logic>div{padding:28px;border-left:2px solid #e69042;background:rgba(255,255,255,.035)}.xbc-device-logic span{color:#d69b66;font-size:11px;font-weight:800}.xbc-device-logic strong{display:block;margin-top:10px;font-size:22px}.xbc-device-logic p{margin:8px 0 0;color:#b8aaa0;line-height:1.75}
.xbc-loop-section{background:#fffaf2}.xbc-loop{display:grid;grid-template-columns:250px 1fr;overflow:hidden;border:1px solid #d9ccbf;border-radius:32px;background:#f3ede4;box-shadow:0 30px 80px rgba(54,38,26,.1)}.xbc-loop-tabs{display:flex;flex-direction:column;padding:14px;border-right:1px solid #d9ccbf}.xbc-loop-tabs button{display:grid;grid-template-columns:34px 1fr;padding:18px 14px;border:0;border-radius:18px;color:#5d554e;background:transparent;text-align:left;cursor:pointer}.xbc-loop-tabs button span{grid-row:1/3;color:#a47354;font-size:11px;font-weight:850}.xbc-loop-tabs button b{font-size:16px}.xbc-loop-tabs button small{margin-top:4px;color:#92867c}.xbc-loop-tabs button[aria-selected=true]{color:#fff9ef;background:#2c1c15;box-shadow:0 10px 26px rgba(56,31,18,.18)}.xbc-loop-tabs button[aria-selected=true] span,.xbc-loop-tabs button[aria-selected=true] small{color:#e9a263}.xbc-loop-panel{display:grid;grid-template-columns:1.15fr .85fr;min-width:0}.xbc-loop-media{position:relative;min-height:570px;overflow:hidden;background:#17120f}.xbc-loop-media>button{width:100%;height:100%;padding:0;border:0;background:none;cursor:zoom-in}.xbc-loop-media img{width:100%;height:100%;object-fit:cover}.xbc-loop-media span{position:absolute;left:20px;bottom:20px;padding:8px 12px;border-radius:999px;color:#fff;background:rgba(20,16,13,.74);font-size:11px;font-weight:800}.xbc-loop-copy{display:flex;flex-direction:column;padding:46px 40px 34px;background:#fffaf2}.xbc-loop-copy>p:first-child{margin:0;color:#aa5c40;font-size:11px;font-weight:850}.xbc-loop-copy h3{margin:18px 0;font-size:32px;line-height:1.25}.xbc-loop-copy>p{margin:0;color:#625a53;line-height:1.75}.xbc-loop-copy ul{display:grid;gap:10px;padding:0;margin:28px 0;list-style:none}.xbc-loop-copy li{position:relative;padding-left:18px;color:#4b453f;line-height:1.55}.xbc-loop-copy li:before{content:"";position:absolute;left:0;top:.62em;width:6px;height:6px;border-radius:50%;background:var(--xbc-coral)}.xbc-loop-boundary{margin-top:auto;padding:18px;border-radius:18px;background:#efe4d8}.xbc-loop-boundary span{display:block;color:#a26344;font-size:10px;font-weight:800}.xbc-loop-boundary strong{display:block;margin-top:7px;font-size:14px}.xbc-loop-actions{display:flex;justify-content:space-between;gap:10px;margin-top:22px}.xbc-loop-actions button{min-height:44px;padding:0 16px;border:1px solid #c8b9aa;border-radius:999px;color:#403831;background:transparent;cursor:pointer;font-weight:750}.xbc-loop-actions button:last-child{color:#fff;border-color:#2d1d16;background:#2d1d16}.xbc-loop-actions button:disabled{opacity:.35}
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.xbc-safety-grid,.xbc-result-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.xbc-safety-grid article,.xbc-result-grid article{min-height:260px;padding:28px;border:1px solid rgba(255,255,255,.12);border-radius:24px;background:rgba(255,255,255,.035)}.xbc-safety-grid span{color:#efa152}.xbc-safety-grid h3,.xbc-result-grid h3{margin:62px 0 12px;font-size:22px}.xbc-safety-grid p{margin:0;color:#bbada4;line-height:1.7}.xbc-state-matrix{margin-top:58px;overflow:hidden;border:1px solid rgba(255,255,255,.14);border-radius:24px}.xbc-state-matrix>div{display:grid;grid-template-columns:180px 1fr 260px;gap:22px;align-items:center;padding:20px 24px;border-top:1px solid rgba(255,255,255,.1)}.xbc-state-head{border-top:0!important;color:#d69a68;background:rgba(255,255,255,.055);font-size:11px}.xbc-state-matrix p{margin:0;color:#bcaea4;line-height:1.6}.xbc-state-matrix strong{color:#efaa6e;font-size:13px}.xbc-safety-source{max-width:900px;margin:24px 0 0;color:#897d75;font-size:12px;line-height:1.8}
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.xbc-media-dialog{width:min(1320px,calc(100% - 40px));max-height:calc(100vh - 40px);padding:0;overflow:auto;border:0;border-radius:24px;color:#fff;background:#15110f}.xbc-media-dialog::backdrop{background:rgba(10,7,5,.84);backdrop-filter:blur(10px)}.xbc-media-dialog>button{position:sticky;z-index:2;top:14px;float:right;margin:14px 14px -60px 0;min-height:42px;padding:0 15px;border:1px solid rgba(255,255,255,.2);border-radius:999px;color:#fff;background:rgba(20,15,12,.82);cursor:pointer}.xbc-media-dialog img{width:100%;max-height:calc(100vh - 130px);object-fit:contain;background:#090807}.xbc-media-dialog p{margin:0;padding:18px 22px;color:#c5b8ae;font-size:13px}
@media(max-width:1100px){.xbc-shell{width:min(100% - 40px,980px)}.xbc-hero-grid{grid-template-columns:1fr;padding-top:76px}.xbc-hero-stage{min-height:610px}.xbc-section-head{grid-template-columns:150px 1fr}.xbc-loop-panel{grid-template-columns:1fr}.xbc-loop-media{min-height:440px}.xbc-loop-copy{min-height:500px}.xbc-safety-grid,.xbc-result-grid{grid-template-columns:repeat(2,1fr)}.xbc-token-strip{grid-template-columns:repeat(3,1fr)}}
@media(max-width:760px){.xbc-shell{width:min(100% - 28px,640px)}.xbc-hero{min-height:auto}.xbc-hero-grid{display:block;min-height:0;padding:62px 0 64px}.xbc-hero h1{font-size:clamp(54px,17vw,78px)}.xbc-lead{font-size:17px}.xbc-hero-stage{min-height:390px;margin-top:40px}.xbc-tv{top:20px;left:0;width:100%;transform:none}.xbc-phone{width:104px;border-radius:21px}.xbc-phone img{border-radius:16px}.xbc-phone-left{left:8px}.xbc-phone-right{right:8px}.xbc-stage-note{display:none}.xbc-fact-grid{grid-template-columns:1fr 1fr}.xbc-fact-grid>div{padding:24px 18px;border-bottom:1px solid var(--xbc-line)}.xbc-fact-grid strong{font-size:17px}.xbc-jump .xbc-shell{width:100%;padding:0 8px}.xbc-jump a{padding:15px 12px}.xbc-section{padding:80px 0}.xbc-section-head{display:block;margin-bottom:42px}.xbc-section-head>p{margin:0 0 16px}.xbc-context-grid,.xbc-design-grid{grid-template-columns:1fr;gap:40px}.xbc-context-copy>p{font-size:16px}.xbc-stat-panel{padding:30px}.xbc-principles{grid-template-columns:1fr;margin-top:42px}.xbc-system-map{grid-template-columns:1fr}.xbc-system-person,.xbc-system-core{grid-row:auto;min-height:280px}.xbc-system-data{grid-column:auto;grid-template-columns:1fr}.xbc-device-logic{grid-template-columns:1fr}.xbc-loop{grid-template-columns:1fr;border-radius:24px}.xbc-loop-tabs{flex-direction:row;overflow-x:auto;border-right:0;border-bottom:1px solid #d9ccbf}.xbc-loop-tabs button{flex:0 0 145px}.xbc-loop-media{min-height:300px}.xbc-loop-copy{min-height:550px;padding:32px 24px 24px}.xbc-scenario,.xbc-scenario:nth-of-type(3){grid-template-columns:1fr;gap:36px;padding:54px 0}.xbc-scenario-media{order:2}.xbc-scenario-copy h3{font-size:38px}.xbc-health-media{padding-right:44px}.xbc-mini-phone{width:90px}.xbc-safety-grid,.xbc-result-grid{grid-template-columns:1fr}.xbc-state-matrix>div{grid-template-columns:1fr;gap:9px}.xbc-state-head{display:none!important}.xbc-design-demo{min-height:460px;padding:28px}.xbc-design-demo h3{margin-top:100px;font-size:34px}.xbc-demo-actions{flex-direction:column}.xbc-design-rules{grid-template-columns:1fr}.xbc-token-strip{grid-template-columns:1fr 1fr}.xbc-evidence-grid{grid-template-columns:1fr}.xbc-evidence-wide{grid-column:auto;display:block}.xbc-evidence-wide button img{min-height:0}.xbc-reflection{padding:30px}.xbc-footer .xbc-shell{flex-direction:column;gap:20px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.xbc-case *{transition-duration:.01ms!important}}

/* Media integrity: screenshots are product evidence, so keep every edge visible. */
.xbc-hero-stage{min-height:760px}
.xbc-tv{top:36px;left:4%;width:92%;transform:rotateY(-4deg) rotateX(1deg)}
.xbc-stage-note{display:none}
.xbc-phone{top:455px;bottom:auto;width:132px}
.xbc-phone-left{left:28%;bottom:auto;transform:rotate(-3deg)}
.xbc-phone-right{right:28%;bottom:auto;transform:rotate(3deg)}
.xbc-loop-media{display:flex;min-height:570px;align-items:center;justify-content:center;background:#17120f}
.xbc-loop-media>button{display:flex;height:100%;align-items:center;justify-content:center}
.xbc-loop-media img{width:100%;height:auto;max-height:570px;object-fit:contain}
.xbc-scenario-media>button{display:flex;align-items:center;justify-content:center;background:#17120f}
.xbc-scenario-media>button img,.xbc-app-board button img{width:100%;height:auto;aspect-ratio:auto!important;object-fit:contain}
.xbc-scenario-media>button:hover img,.xbc-evidence-grid button:hover img{transform:none}
.xbc-health-media{display:grid;grid-template-columns:minmax(0,1fr) 132px;gap:16px;align-items:end;padding:0}
.xbc-mini-phone{position:static;width:100%;align-self:end}
.xbc-evidence-grid button{display:flex;align-items:center;justify-content:center;background:#0d0a08}
.xbc-evidence-grid button img{width:100%;height:auto;aspect-ratio:auto;object-fit:contain;transition:none}
.xbc-evidence-16x9 button img{aspect-ratio:16/9}
.xbc-evidence-16x10 button img{aspect-ratio:8/5}
.xbc-evidence-wide button img{height:auto;min-height:0}
.xbc-evidence-tall{grid-column:1/-1;display:grid;grid-template-columns:minmax(360px,480px) minmax(260px,1fr);align-items:start}
.xbc-evidence-tall button img{height:auto;aspect-ratio:auto;object-fit:contain;object-position:center top}
.xbc-evidence-tall>div{position:sticky;top:92px}
@media(max-width:1100px){
  .xbc-hero-stage{min-height:860px}
  .xbc-tv{top:36px}
  .xbc-phone{top:575px}
  .xbc-phone-left{left:32%}
  .xbc-phone-right{right:32%}
  .xbc-evidence-tall{grid-template-columns:minmax(320px,420px) 1fr}
}
@media(max-width:760px){
  .xbc-hero-stage{min-height:500px}
  .xbc-tv{top:12px;left:0;width:100%;transform:none}
  .xbc-phone{top:250px;width:92px}
  .xbc-phone-left{left:23%}
  .xbc-phone-right{right:23%}
  .xbc-loop-media{min-height:0;padding:16px}
  .xbc-loop-media img{max-height:none}
  .xbc-health-media{grid-template-columns:minmax(0,1fr) 82px;gap:10px;padding:0}
  .xbc-evidence-tall{display:block}
  .xbc-evidence-tall>div{position:static}
}