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/* Explicit width prevents min-height + aspect-ratio from widening compact phones. */
.video-frame{width:100%;min-width:0}#video-mount{min-width:0}.video-placeholder{width:100%;min-width:0}.video-placeholder h3{overflow-wrap:break-word}
@media(max-width:360px){.hero{height:140px}.head-scene{width:146px}.architecture-scene{width:calc(100% - 146px)}.hero-content{margin-left:136px}.hero h1{font-size:23px}.hero-content>p:last-child{font-size:8px}.hero .eyebrow{font-size:6px;letter-spacing:.07em}.video-placeholder{padding:20px}.primary-button,.secondary-button{padding:10px 13px;font-size:9px}}
.teaching-intro{font-size:11px;margin:0 0 16px;color:#f8e8cd}.technical-nav button{min-height:42px}.division-explanations{grid-template-columns:repeat(2,minmax(0,1fr))}.division-explanations img{height:155px}.division-explanations figcaption{text-align:left;line-height:1.5}.division-explanations figcaption b,.comparison-grid figcaption b{font-weight:600;display:block;font-size:12px;color:#fff4e0;margin-bottom:5px}.division-explanations figcaption span{font-size:11px;color:#e9d9c4;display:block}.spacing-example{margin:25px 0 20px;padding:20px;border:1px solid #f5dbb34d;background:#4434272e;border-radius:15px}.spacing-example h5{font-size:20px;font-weight:450;line-height:1.3;margin:0 0 17px}.spacing-example .eyebrow{font-size:8px;color:#e9d1ab}.comparison-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.comparison-grid figure{min-width:0;margin:0}.comparison-grid svg{display:block;width:100%;height:auto}.comparison-grid figcaption{margin:10px 0 0}.comparison-grid figcaption span{font-size:11px;color:#ecddc7;display:block;line-height:1.6}.diagram-key{display:flex;gap:8px;align-items:start;font-size:9px!important;color:#ead3b0;margin-top:17px!important}.diagram-key>span{display:block;background:#f4d39b;width:18px;height:4px;flex-shrink:0;margin-top:6px}.teaching-distinction{display:grid;grid-template-columns:1fr 1fr;gap:15px;border-top:1px solid #fff2;padding-top:15px;margin-top:17px}.teaching-distinction b,.teaching-distinction span{display:block}.teaching-distinction b{font-size:11px;color:#ffe7be;margin-bottom:5px}.teaching-distinction span{font-size:10px;line-height:1.6;color:#e9d6bb}.example-head{display:flex;justify-content:space-between;align-items:center;gap:12px;margin:20px 0 15px}.example-head>.eyebrow{font-size:8px;margin:0;color:#f2d7ae}.example-badge{font-size:9px;border:1px solid #e2bd7e70;border-radius:15px;padding:4px 9px;color:#ffe3b0}.example-switch{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:15px}.example-switch button{border:1px solid #f1d2a16b;min-height:42px;border-radius:10px;padding:9px 15px;color:#f8e5c8;background:#47392c33;font-size:11px}.example-switch button[aria-pressed=true]{background:#f0d7ad;color:#49372a;border-color:#ffdfad}.hair-examples{gap:16px}.example-photo{background:#47392e33;border:1px solid #fff3;border-radius:12px;overflow:hidden;display:grid;place-items:center}.example-photo svg{height:350px;width:100%}.example-observation{font-size:12px!important;color:#fff0d2;padding:12px 0 0;margin:0 0 12px!important}.fixed-variables{font-size:10px!important;color:#ead6b8;background:#2c22192b;border-radius:8px;padding:10px 12px}.fixed-variables b{font-weight:600}.context-resource{margin-top:24px;border-top:1px solid #fff3}.context-resource summary{padding:16px 0;font-size:11px}.context-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:18px}.context-grid figure{margin:0;min-width:0}.context-grid img{display:block;width:100%;height:220px;object-fit:contain}.context-grid figcaption{font-size:9px;line-height:1.5;color:#e5d1b5;margin:8px 0}.technical-stage{scroll-margin-top:20px}
@media(max-width:600px){.division-explanations img{height:125px}.division-explanations figure{padding:9px}.division-explanations figcaption b,.comparison-grid figcaption b{font-size:11px}.division-explanations figcaption span,.comparison-grid figcaption span{font-size:10px}.spacing-example{padding:15px 12px}.spacing-example h5{font-size:18px}.spacing-example .eyebrow{font-size:7px}.comparison-grid{gap:10px}.example-photo svg{height:270px}.example-head{gap:8px;align-items:start}.example-head>.eyebrow{font-size:7px;max-width:130px}.example-badge{font-size:8px}.example-switch button{font-size:10px;padding:8px 11px}.teaching-distinction{gap:10px}.teaching-distinction span{font-size:9px}.teaching-distinction b{font-size:10px}.context-grid{grid-template-columns:1fr}.context-grid img{height:240px}.context-grid figure:last-child img{height:320px}}
@media(max-width:360px){.division-explanations{grid-template-columns:1fr}.division-explanations img{height:155px}.example-photo svg{height:220px}.comparison-grid figcaption span{font-size:9px}.example-head{display:block}.example-badge{display:inline-block;margin-top:8px}.spacing-example{padding:13px 10px}.teaching-distinction{grid-template-columns:1fr}}
/* Module 3 is one continuous video-to-example surface. Other modules retain their layout. */
.joined-experience{min-width:0;border:1px solid #fff8;border-radius:var(--radius);overflow:hidden;background:linear-gradient(130deg,rgba(103,86,71,.72),rgba(54,44,35,.82));backdrop-filter:blur(18px);box-shadow:inset 0 1px 0 #fff3,0 14px 36px #3b2c2525}
.joined-experience>.video-frame{border:0;border-radius:0;box-shadow:none;background:linear-gradient(135deg,#5c4f4333,#2e282288)}
.visual-continuation{border-top:1px solid #f5d5a350;padding-top:22px}
.visual-continuation-heading{padding:0 24px 0}.visual-continuation-heading .eyebrow{font-size:8px;color:#e4c89d;margin-bottom:8px}.visual-continuation-heading h3{font-size:24px;font-weight:400;letter-spacing:-.02em;margin:0 0 10px}.visual-continuation>.resource-body{padding:0 24px 24px}
.lesson-overview{color:#584535;margin:-3px 0 12px;border-bottom:1px solid #6a57442b}.lesson-overview summary{padding:7px 0;min-height:35px;justify-content:flex-start;gap:12px;font-size:10px}.lesson-overview summary:after{font-size:15px;color:#745b3f}.lesson-overview .resource-body{padding:4px 0 14px;color:#584535}.lesson-overview .resource-note{color:#6b5139;background:#fff2}.lesson-overview .topic-list{margin-bottom:10px}.lesson-overview .topic-list li:before{background:#8b6c43}
.top-actions{display:flex;align-items:center;gap:22px}.language-picker{display:flex;align-items:center;gap:8px;font-size:10px;color:#584535}.language-picker select{font:inherit;color:#4d3c2e;border:1px solid #8e78604d;background:#ffffff36;border-radius:20px;padding:8px 26px 8px 12px;min-height:36px;max-width:145px;cursor:pointer}.language-picker option,.language-picker optgroup{background:#f2e8db;color:#49392a}.language-note{font-size:9px;color:#6b5743;line-height:1.5;margin:10px 0 0;max-width:750px}.design-language-note{font-size:10px;color:#68513b;margin:12px 0 4px}
@media(max-width:600px){.topline{height:auto;min-height:66px;gap:10px;align-items:center}.top-actions{gap:10px}.language-picker>span{display:none}.language-picker select{max-width:110px;padding:7px 18px 7px 9px;font-size:10px}.top-actions>.text-button{font-size:9px}.topline>span{font-size:8px;max-width:92px;line-height:1.6}.language-note{font-size:8px;margin-top:9px}.visual-continuation{padding-top:19px}.visual-continuation-heading{padding:0 16px}.visual-continuation-heading h3{font-size:21px}.visual-continuation>.resource-body{padding:0 16px 20px}.joined-experience{border-radius:18px}.lesson-overview summary{min-height:39px}.lesson-overview .topic-list{grid-template-columns:1fr 1fr}.lesson-overview .topic-list li{font-size:9px}}
@media(max-width:360px){.top-actions{gap:7px}.topline>span{max-width:72px;font-size:7px}.top-actions>.text-button{font-size:8px}.language-picker select{font-size:9px;max-width:98px}.visual-continuation>.resource-body{padding:0 13px 18px}.visual-continuation-heading{padding:0 13px}.lesson-overview .topic-list{grid-template-columns:1fr}}
/* Compact fixed-example gallery. Selection browses examples; it is not a second designer. */
.guide-gallery{margin:18px 0;border:1px solid #ecd4b14d;border-radius:15px;background:#2e241c22;overflow:hidden}.guide-gallery-top{display:flex;justify-content:space-between;gap:12px;align-items:center;padding:15px 17px 8px}.guide-gallery-top .eyebrow{margin:0;font-size:8px;color:#ead0a8}.guide-choice-list{display:flex;flex-wrap:wrap;gap:6px;padding:3px 17px 14px}.guide-choice-list button{min-height:38px;font-size:10px;border:1px solid #eed3aa59;color:#f5e2c7;background:#fff1;padding:8px 12px;border-radius:9px}.guide-choice-list button[aria-pressed=true]{background:#edcf9a;color:#423121;border-color:#ffe5b5}.guide-example-body{display:grid;grid-template-columns:minmax(145px,230px) minmax(0,1fr);gap:20px;padding:0 17px 16px;align-items:start}.guide-photo{margin:0;min-width:0}.guide-photo>svg{height:330px;width:100%;display:block;background:#b5a89b;border:1px solid #fff3;border-radius:11px}.guide-photo figcaption{font-size:10px;text-align:center;color:#f1dfc4;margin-top:8px}.guide-explanation>.eyebrow{font-size:8px;color:#e5c89b;margin:4px 0 10px}.guide-explanation .example-observation{font-size:13px!important;line-height:1.6;padding:0;margin:0 0 17px!important}.guide-legend{display:flex;flex-wrap:wrap;gap:10px 15px;font-size:9px;color:#efddbd;margin:14px 0}.guide-legend>span{display:flex;align-items:center;gap:6px}.guide-legend i{display:block}.start-point,.end-point{width:7px;height:7px;border-radius:50%;background:#e0bf75;border:1px solid #344434}.end-point{background:#c8dfc5}.dashed-line{width:22px;border-top:2px dashed #eecf8b}.guide-disclaimer{font-size:10px!important;color:#ddc8a9;margin:12px 0 15px}.guide-navigation{display:flex;justify-content:space-between;align-items:center;border-top:1px solid #fff2;padding:10px 17px;gap:12px}.guide-navigation>span{font-size:10px;color:#ead4af;text-align:center}.guide-navigation button{min-height:36px;min-width:42px;padding:6px 13px;font-size:16px}
@media(max-width:600px){.guide-example-body{grid-template-columns:minmax(110px,45%) minmax(0,1fr);gap:12px;padding:0 12px 13px}.guide-photo>svg{height:255px}.guide-explanation .example-observation{font-size:11px!important}.guide-explanation .fixed-variables{font-size:9px!important;padding:8px}.guide-legend{font-size:8px;gap:8px}.guide-disclaimer{font-size:9px!important}.guide-gallery-top{padding:13px 12px 7px}.guide-choice-list{padding:3px 12px 13px}.guide-choice-list button{font-size:9px;padding:8px 10px}.guide-gallery-top .eyebrow{font-size:7px}.guide-explanation>.eyebrow{font-size:7px}.guide-navigation{padding:9px 12px}}
@media(max-width:360px){.guide-example-body{grid-template-columns:1fr}.guide-photo{max-width:190px;margin:0 auto;width:100%}.guide-photo>svg{height:250px}.guide-explanation .example-observation{font-size:11px!important}.guide-explanation>.eyebrow{margin-top:4px}.guide-legend{margin:10px 0}.guide-explanation .fixed-variables{margin-bottom:0}}
/* Cranial maps share one neutral image per view, so selections never move the anatomy. */
.cranial-explorer{border:1px solid #d5b88d44;border-radius:15px;overflow:hidden;padding:15px;background:#281f1922}.zone-view-switch{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:15px}.zone-view-switch button,.zone-options button{border:1px solid #d9c0a16b;background:#fff1;color:#f5e5cf;border-radius:9px;min-height:40px;padding:8px 12px;font-size:10px;text-align:left}.zone-view-switch button[aria-pressed=true],.zone-options button[aria-pressed=true]{background:#edce9c;color:#46311e;border-color:#f5d8a8}.zone-layout{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(130px,.85fr);gap:20px;align-items:center}.zone-figure{margin:0;min-width:0}.zone-figure svg{display:block;width:100%;border-radius:11px;border:1px solid #fff2}.zone-figure figcaption{font-size:11px;text-align:center;margin-top:9px;color:#f5ddb5}.zone-controls>.eyebrow{font-size:8px}.zone-options{display:grid;gap:7px}.zone-options button{display:flex;align-items:center;gap:8px}.zone-chip{display:block;width:7px;height:7px;border-radius:50%;background:#c88c4b;border:1px solid #ebbf82}.zone-options button[aria-pressed=true] .zone-chip{background:#74481f;border-color:#74481f}.zone-controls .technical-caption{font-size:9px;margin:15px 0 0}.cranial-explorer>.technical-caption{font-size:9px;margin-bottom:0}
@media(max-width:600px){.cranial-explorer{padding:11px}.zone-layout{grid-template-columns:1fr;gap:15px}.zone-figure{max-width:340px;margin:auto;width:100%}.zone-options{grid-template-columns:repeat(2,minmax(0,1fr))}.zone-options button{font-size:9px;padding:8px}.zone-controls>.eyebrow{font-size:7px}.zone-view-switch button{font-size:9px}}
/* Explicit reversible zigzag comparison and high-contrast navigation. */
.zigzag-mode{display:flex;gap:7px;flex-wrap:wrap;padding:4px 17px 14px}.zigzag-mode button{min-height:42px;padding:9px 15px;border-radius:9px;border:1px solid #e4cfb29c;background:#3c2e23;color:#f9ecd8;font-size:11px}.zigzag-mode button[aria-pressed=true]{background:#f4d7a3;color:#392b20;border-color:#fff0cc;font-weight:650}.guide-navigation button{display:grid;place-items:center;flex:0 0 48px;width:48px;min-width:48px;min-height:44px;padding:8px;background:#f4d7a3;color:#392b20;border:1px solid #fff0cc;box-shadow:0 2px 7px #21150e30}.guide-navigation button:hover{background:#ffe8c0;color:#281b12}.guide-navigation button:active{background:#dfb875}.guide-navigation button svg{display:block;width:23px;height:23px;fill:none;stroke:currentColor;stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round}.guide-navigation>span{min-width:0;overflow-wrap:anywhere}.guide-navigation button:focus-visible{outline:3px solid #fff2c8;outline-offset:3px}
@media(max-width:600px){.zigzag-mode{padding:3px 12px 13px}.zigzag-mode button{font-size:10px;padding:8px 12px}}
/* The skull assets are transparent; the backdrop comes from the panel itself. */
.zone-figure svg{background:linear-gradient(140deg,rgba(235,225,211,.64),rgba(176,155,132,.35)),url('assets/iris-design-scene-clean.png') center/cover;border:1px solid #fff9;box-shadow:inset 0 1px 0 #fff9,0 5px 18px #34251b24}
/* Universal division and distance imagery; all labels remain translatable HTML. */
.division-explanations img{height:230px;width:100%;object-fit:contain;border-radius:10px;background:linear-gradient(140deg,rgba(235,225,211,.64),rgba(176,155,132,.35)),url('assets/iris-design-scene-clean.png') center/cover;border:1px solid #fff5}.distance-options{display:flex;flex-wrap:wrap;gap:7px;margin:0 0 15px}.distance-options button{min-height:42px;padding:8px 16px;border:1px solid #e0c5a175;background:#3c2e2350;color:#f4e3ca;border-radius:9px;font-size:11px}.distance-options button[aria-pressed=true]{background:#f4d7a3;color:#392b20;border-color:#fff0cc}.distance-layout{display:grid;grid-template-columns:minmax(160px,250px) minmax(0,1fr);gap:20px;align-items:center}.distance-figure{margin:0;min-width:0}.distance-figure img{display:block;width:100%;height:auto;border:1px solid #fff8;border-radius:12px;background:linear-gradient(140deg,rgba(235,225,211,.64),rgba(176,155,132,.35)),url('assets/iris-design-scene-clean.png') center/cover}.distance-figure figcaption{font-size:11px;color:#f5dfb7;text-align:center;margin-top:8px}.distance-description{font-size:13px!important;color:#fff0d6}.distance-layout .eyebrow{font-size:8px}.distance-layout .technical-caption{font-size:10px}.distance-tendency{font-size:11px!important;color:#f4e0c0}
@media(max-width:600px){.division-explanations img{height:150px}.distance-layout{grid-template-columns:minmax(105px,46%) minmax(0,1fr);gap:12px}.distance-description{font-size:11px!important}.distance-layout .technical-caption{font-size:9px}.distance-options button{font-size:10px}.distance-tendency{font-size:10px!important}}
@media(max-width:360px){.division-explanations img{height:220px}.distance-layout{grid-template-columns:1fr}.distance-figure{max-width:220px;margin:auto;width:100%}}

/* Revision 10: retain the approved warm scene and make the technical choices visibly tappable. */
:root{color-scheme:only light}
html{background:#9e9084}
body{position:relative;isolation:isolate;min-height:100vh;background:#9e9084}
.ambient{z-index:0;pointer-events:none;background-color:#9e9084}
.shell{position:relative;z-index:1}
/* Local review: the six technical controls echo the platform's warm glass cards. */
.technical-nav button{min-height:44px;padding:10px 16px;border:1px solid #e8d2ad80;border-radius:12px;background:rgba(58,47,38,.42);color:#fff4df;font-family:inherit;font-size:11px;font-weight:450;letter-spacing:.025em;line-height:1.3;box-shadow:inset 0 1px 0 #fff4df0d,0 2px 8px #26170b14;transition:background .18s,border-color .18s,box-shadow .18s}
.technical-nav button:hover{background:rgba(104,84,63,.58);border-color:#f4d39bc4;box-shadow:inset 0 1px 0 #fff4df18,0 2px 10px #26170b1a}
.technical-nav button[aria-pressed=true]{background:linear-gradient(120deg,#f2d29d28,#eec17b0c);color:#fff4df;border-color:#ffedcc;box-shadow:inset 0 0 16px #ffe6bd24,0 0 0 1px #ffe9c21c,0 0 13px #ffe0a940,0 0 26px #ffe0a914;font-weight:550}
.technical-nav button:focus-visible{outline:3px solid #fff4d6;outline-offset:4px}
.technical-nav button:active{background:rgba(126,98,65,.48);box-shadow:inset 0 1px 5px #35271933}
@media(max-width:600px){.resource-body .technical-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px}.technical-nav button{width:100%;padding:10px 12px;text-align:left}}
@media(prefers-reduced-motion:reduce){.technical-nav button{transition:none}}

@media(prefers-reduced-motion:reduce){.area-switch button{transition:none}}

/* Three open areas. Retain the approved warm controls and visual language. */
.three-area-switch{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px}
.three-area-switch button{width:100%;min-width:0;min-height:50px;line-height:1.3}
.three-area-switch button span{flex:none}
.journey-note{font-size:10px;line-height:1.6;color:#574534;margin:12px 0 0}
.method-area{padding-top:25px}
.method-heading{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:20px;color:#433528}
.method-heading h2{font-size:27px;font-weight:400;margin:0 0 6px}
.method-heading p:last-child{font-size:12px;margin:0;max-width:600px}
.method-panel{min-width:0;padding:24px 24px 4px}
.method-panel>.resource-body{padding:0 0 20px}
.method-panel .technical-nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-bottom:24px}
.method-panel .technical-nav button{text-align:center}
.lesson-reference{padding:22px}
.lesson-reference h3{font-size:20px;font-weight:450;margin:0 0 10px}
.lesson-reference>p:not(.eyebrow){font-size:11px;line-height:1.7;margin:0 0 16px;color:var(--muted)}
.lesson-reference>.reference-note{font-size:9px!important;margin:12px 0 0!important}
@media(max-width:800px){.method-heading{align-items:start;flex-direction:column;gap:13px}.method-heading h2{font-size:24px}.method-heading p:last-child{font-size:11px}.method-panel{padding:20px 18px 2px}}
@media(max-width:600px){.method-panel .technical-nav{grid-template-columns:repeat(2,minmax(0,1fr))}.method-panel .technical-nav button{text-align:left}.three-area-switch{gap:7px}.three-area-switch button{padding:10px 9px;gap:6px;min-height:56px;font-size:10px}.three-area-switch button span{font-size:8px}.journey-note{font-size:9px}.method-panel{padding:18px 16px 2px}.lesson-reference{padding:18px}}