/* ATLAS 3.9: isolated, real DOM/CSS design-system studies */
.term-card .scene-p39{height:370px!important;display:block!important;position:relative;z-index:2;pointer-events:auto;background:#ecf2fc!important}
.p39{--brand:#4166d0;--ink:#203451;--space:12px;--radius:12px;--glow:0 8px 20px #28467c24;display:flex;flex-direction:column;width:100%;height:100%;min-height:310px;padding:13px;gap:9px;overflow:auto;isolation:isolate;background:linear-gradient(145deg,#f7faff,#e5ecfb);font:14px/1.5 system-ui,-apple-system,sans-serif;color:var(--ink)}
.p39 *{box-sizing:border-box;font-size:14px}
.p39 [hidden]{display:none!important}
.p39 h3{font-weight:750;font-size:17px;margin:0;line-height:1.45}
.p39-head{display:flex;align-items:center;justify-content:space-between;gap:6px;flex-wrap:wrap}
.p39-head b{font-size:15px;font-weight:750}
.p39-head span{font-size:14px;color:#40587b}
.p39-stage{min-height:120px;position:relative;flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:9px;padding:12px;background:#fff;border:1px solid #bdcce2;border-radius:12px;overflow:auto;container-type:inline-size;max-width:100%}
.p39-demo{--p39-scale:1;display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:var(--space);width:100%;min-height:62px;max-width:100%;position:relative;transition:background .18s ease}
.p39-block{display:grid;place-items:center;min-width:47px;min-height:42px;padding:8px 12px;background:var(--brand);color:#fff;border-radius:var(--radius);box-shadow:var(--glow);font-size:14px;font-weight:700}
.p39-block.alt{background:#278b8d}.p39-block.muted{background:#e0e9f6;color:#243d61}
.p39-label{font-size:14px;color:#4a6182;line-height:1.4;text-align:center}
.p39-card{border:1px solid #bdc9dd;border-radius:var(--radius);padding:var(--space);background:#fff;box-shadow:var(--glow);max-width:100%}
.p39-sample{font-size:calc(14px + var(--p39-scale,1)*2px);color:#243d65;line-height:1.5}
.p39-bar{background:#bed1f2;border-radius:7px;min-height:10px;width:85%;max-width:180px}
.p39-bar.short{width:55%}
.p39-controls{display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.p39 button,.p39 input,.p39 select{font:inherit;font-size:14px}
.p39 button{min-width:42px;min-height:40px;border:1px solid #9caed0;border-radius:9px;background:#fff;color:#24406d;padding:7px 10px;cursor:pointer}
.p39 button:hover{border-color:#4166d0}
.p39 button[data-action=step],.p39 button[aria-pressed=true]{background:var(--brand);color:white;border-color:var(--brand)}
.p39 button:disabled{opacity:.55;cursor:not-allowed}
.p39 :is(button,input,select,[tabindex]):focus-visible{outline:3px solid #c17c12;outline-offset:2px}
.p39 input[type=range]{accent-color:#4166d0;flex:1;min-width:60px;min-height:30px}
.p39 select{min-height:40px;border:1px solid #aabdd5;padding:6px;border-radius:8px;background:#fff;max-width:100%}
.p39 input[type=color]{height:40px;width:43px;border:1px solid #aabdd5;background:#fff;padding:3px;border-radius:8px}
.p39-range{display:grid;grid-template-columns:1fr auto;gap:6px;width:100%;align-items:center}
.p39-range label{grid-column:1/-1}
.p39-range output{font-variant-numeric:tabular-nums;color:#304f78}
.p39-result{color:#38527a;font-size:14px;min-height:20px;overflow-wrap:anywhere;line-height:1.4}
.p39-code{font-size:14px;line-height:1.35;white-space:pre-wrap;word-break:break-word;background:#e8eef9;border:1px solid #cbd6e9;padding:7px;border-radius:7px;max-height:55px;overflow:auto;margin:0}
.p39-flow{width:100%;max-width:260px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--space);align-items:center;justify-items:stretch}
.p39-flow>.p39-block{min-width:0}
.p39-type{display:grid;gap:5px;text-align:left;width:100%;max-width:250px}
.p39-type h3{font-size:calc(16px + var(--p39-scale,1)*8px);line-height:1.2}
.p39-type p{margin:0;font-size:calc(14px + var(--p39-scale,1)*2px);color:#375172}
.p39-elev{display:flex;gap:11px;align-items:center;justify-content:center}
.p39-elev .p39-card{width:66px;height:50px;display:grid;place-items:center;padding:5px}
.p39-phone{width:min(200px,90%);border:5px solid #273d5f;border-radius:24px;padding:10px;min-height:120px;display:grid;gap:8px;background:#fff;box-shadow:0 7px 22px #24406d26}
.p39-phone .p39-bar{width:100%}
.p39-wire .p39-block{background:#c5d2e6;color:transparent;border-radius:5px;box-shadow:none}
.p39-wire .p39-card{box-shadow:none;border-style:dashed}
.p39-illustration{width:100%;max-width:160px;height:85px}
.p39-illustration circle,.p39-illustration rect,.p39-illustration path{transition:stroke .2s,fill .2s}
.p39-stepper{display:flex;align-items:center;justify-content:center;gap:7px}
.p39-stepper span{display:grid;place-items:center;border:1px solid #9dafcc;border-radius:40px;width:34px;height:34px}
.p39-stepper .active{background:var(--brand);color:#fff}
.p39-scroll{height:135px;overflow:auto;overscroll-behavior:contain;position:relative;width:100%;border:1px solid #adc0dc;border-radius:7px}
.p39-scroll-item{min-height:70px;padding:10px;background:#e9effd;border-bottom:1px solid #c4d1e5}
.p39-stick{position:sticky;top:0;padding:7px;background:var(--brand);color:#fff;z-index:2}
.p39-anchor-host{position:relative;width:100%;height:102px;overflow:visible;display:flex;justify-content:center;align-items:start;padding-top:12px}
.p39-anchor{anchor-name:--atlas39-anchor;display:grid;place-items:center;background:#4166d0;color:#fff;width:80px;height:43px;border-radius:9px}
.p39-pop{position:absolute;position-anchor:--atlas39-anchor;position-area:bottom center;top:58px;left:calc(50% - 50px);width:100px;background:#16345a;color:#fff;border-radius:8px;padding:8px;z-index:1}
@supports(position-anchor:--atlas39-anchor){.p39-pop{top:auto;left:auto}}
.p39-content{width:100%;max-width:180px;display:grid;gap:5px;overflow:auto;max-height:110px}
.p39-content>.p39-bar{width:100%}
.p39-table{width:100%;border-collapse:collapse;font-size:14px}
.p39-table td{border:1px solid #d2deed;padding:4px 6px}
.p39-frame{width:100%;max-width:240px;padding:10px;border:2px solid #b1bfda;display:flex;flex-wrap:wrap;gap:8px}
.p39:has([data-stage] [data-theme=dark]){--ink:#e7efff}
.p39 :is(.p39-result,.p39-code){flex-shrink:0}
@media(max-width:740px){.term-card .scene-p39{height:390px!important}.p39{padding:11px}.p39-stage{min-height:135px}.p39-head b{font-size:15px}}
@media(prefers-reduced-motion:reduce){.p39 *, .p39 *::before{animation:none!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}

/* ATLAS 3.9 — real WebGL ShaderMaterial and GPU draw-call studies */
.term-card .scene-p39-fx{height:390px!important;background:#0c1b36!important;display:block!important;position:relative;pointer-events:auto;overflow:hidden}
.p39fx{height:100%;width:100%;position:relative;isolation:isolate;background:radial-gradient(circle at 50% 30%,#23466a,#0b1831);color:#f4f6fc;font:14px/1.5 system-ui,sans-serif;overflow:hidden}
.p39fx *{box-sizing:border-box;font-size:14px}
.p39fx canvas{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.p39fx-title{position:absolute;left:11px;top:11px;right:90px;color:#ebf3ff;font-size:15px;font-weight:700;z-index:3}
.p39fx-caption{position:absolute;left:12px;top:44px;color:#c4d7f3;font-size:14px;max-width:85%;z-index:3}
.p39fx-controls{position:absolute;left:9px;right:9px;bottom:9px;z-index:5;background:#12243be8;border:1px solid #7893b45a;border-radius:11px;padding:9px;display:grid;gap:5px;grid-template-columns:minmax(0,1fr) auto}
.p39fx-controls label{grid-column:1/-1;color:#d5e6ff}
.p39fx-controls input[type=range]{width:100%;min-height:30px;accent-color:#8fbbff}
.p39fx-controls output{font:14px/1.5 ui-monospace,monospace;text-align:right;min-width:40px}
.p39fx-controls button{min-height:38px;min-width:48px;background:#35588d;color:#fff;border:1px solid #8eaae0;border-radius:8px;padding:6px 10px;font:600 14px system-ui,sans-serif;cursor:pointer}
.p39fx-controls button:focus-visible,.p39fx-controls input:focus-visible,.p39fx .lab-action:focus-visible{outline:3px solid #e5ae54;outline-offset:3px}
.p39fx-stat{grid-column:1/-1;color:#cfe1fc;font-size:14px;overflow-wrap:anywhere}
.p39fx.lab .lab-action{position:absolute;inset:50px 9px 154px;border:0;background:transparent;box-shadow:none;opacity:1;color:transparent;z-index:2;min-height:35px;min-width:0;touch-action:pan-y}
.p39fx.lab .lab-zoom{position:absolute;right:10px;top:12px;z-index:5}
.p39fx.lab .lab-zoom button{width:38px;min-width:38px;height:38px;min-height:38px;background:#233f67;color:white;border:1px solid #88a3c5;border-radius:8px}
.p39fx .lab-loading{z-index:1;position:absolute;top:40%;width:100%;text-align:center;font-size:14px;color:#d1e2ff}
.p39fx[data-ready=true] .lab-loading{display:none}
.p39fx-note{font-size:14px;color:#c6d7f0;position:absolute;top:73px;left:11px;right:11px;pointer-events:none;max-height:42px;overflow:hidden}
.doc-demo:has(.p39fx){min-height:420px}
@media(max-width:740px){.term-card .scene-p39-fx{height:410px!important}.p39fx-controls{padding:7px}.p39fx-title{font-size:15px}}
@media(prefers-reduced-motion:reduce){.p39fx *{animation:none!important;transition-duration:.01ms!important}}