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/* HEATFLOW / ACTIVE THERMAL CIRCUIT */
.thermal-section{display:grid;grid-template-columns:44% 56%;background:#11100f;color:#f8f5f1;min-height:720px;overflow:hidden}.thermal-copy{padding:clamp(45px,7vw,110px) clamp(28px,5vw,90px);display:flex;flex-direction:column;align-items:flex-start;justify-content:center}.thermal-copy .kicker{color:#ff762f}.thermal-copy h2{font-size:clamp(48px,5.2vw,100px);line-height:.94;letter-spacing:-.065em;margin:40px 0 30px;font-weight:750}.thermal-copy h2 em{color:#ff6a24;font-family:Georgia,serif;font-weight:400;letter-spacing:-.045em}.thermal-copy p{max-width:440px;color:#bdb7b1;line-height:1.7;font-size:17px;margin-bottom:32px}.thermal-copy .line-link{color:#fff}.thermal-diagram{background:radial-gradient(ellipse at 48% 55%,#36231a 0%,#181513 42%,#0c0c0b 100%);display:flex;flex-direction:column;justify-content:center;padding:55px 24px 30px;position:relative}.thermal-diagram svg{width:100%;max-height:620px;overflow:visible}.thermal-status,.thermal-bottom{font:600 12px/1.4 monospace;letter-spacing:.11em;color:#c9c0b9;display:flex;gap:12px;align-items:center;justify-content:space-between}.thermal-status b{font-size:24px;color:#ff6a24}.thermal-led{display:inline-block;background:#ff6a24;width:8px;height:8px;border-radius:50%;box-shadow:0 0 18px #ff6a24;animation:heatpulse 1.7s infinite}.thermal-back path{fill:none;stroke:#59443a;stroke-width:12;stroke-linecap:round;stroke-linejoin:round}.thermal-flow path{fill:none;stroke:url(#hotflow);stroke-width:5;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:26 46;animation:heatcirculate 2.3s linear infinite}.thermal-boiler rect{fill:#201b18;stroke:#ff6a24;stroke-width:2}.thermal-boiler circle{fill:#3c261a;stroke:#ff6a24;stroke-width:2}.thermal-boiler text,.thermal-radiator text{fill:#bdb5ad;font:11px monospace;letter-spacing:1px}.thermal-radiator rect{fill:#29231e;stroke:#ff8b43;stroke-width:2}.thermal-radiator path{fill:none;stroke:#ff6a24;stroke-width:8;stroke-linecap:round;opacity:.8;animation:heatpulse 2.5s ease-in-out infinite}.thermal-bottom span{color:#ff9c61}@keyframes heatcirculate{to{stroke-dashoffset:-144}}@keyframes heatpulse{50%{opacity:.35;filter:brightness(1.5)}}@media(max-width:850px){.thermal-section{grid-template-columns:1fr}.thermal-copy{padding:75px 26px 35px}.thermal-copy h2{font-size:clamp(50px,11vw,76px)}.thermal-diagram{padding:30px 20px}.thermal-diagram svg{max-height:500px}}@media(prefers-reduced-motion:reduce){.thermal-flow path,.thermal-led,.thermal-radiator path{animation:none}}
/* Animated house heating cutaway */
.house-heating .house-shell path{fill:none;stroke:#a68e7e;stroke-width:6;stroke-linejoin:round;stroke-linecap:round}.house-heating .house-shell path:first-child{stroke:#f2e6da;stroke-width:10}.house-heating .house-windows rect{fill:#29211c;stroke:#89766b;stroke-width:3}.house-heating .house-windows path{fill:none;stroke:#89766b;stroke-width:2}.house-heating .house-boiler rect{fill:#25201d;stroke:#ff6a24;stroke-width:2}.house-heating .house-boiler circle{fill:#48291b;stroke:#ff8a48;stroke-width:2}.house-heating .house-boiler text,.house-heating .house-labels text{fill:#d9c5b7;font:12px monospace;letter-spacing:1px}.house-heating .house-radiator rect{fill:#3b2c24;stroke:#ff8b43;stroke-width:2}.house-heating .house-radiator path{fill:none;stroke:#ff6a24;stroke-width:7;stroke-linecap:round;animation:heatpulse 2.5s ease-in-out infinite}.house-heating .house-heat path{fill:none;stroke:#ff9b57;stroke-width:3;stroke-linecap:round;opacity:.7;animation:heatpulse 2s ease-in-out infinite}.house-heating .house-pipes path{stroke-width:10}.house-heating .house-pipes.thermal-flow path{stroke-width:5}.house-heating .house-labels text:first-child{fill:#ffb78a;font-weight:700}
/* HeatFlow photographic portfolio */
.hf-gallery-filters{display:flex;gap:12px;flex-wrap:wrap;margin:25px 0 34px}.hf-gallery-filters button{background:transparent;border:1px solid #555;color:inherit;padding:13px 18px;font:600 12px sans-serif;letter-spacing:.08em;cursor:pointer}.hf-gallery-filters button.active,.hf-gallery-filters button:hover{background:#ff6a24;color:#0c0b0a;border-color:#ff6a24}.hf-gallery-filters span{opacity:.65;margin-left:12px}.hf-work-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px}.hf-work-card{background:#171513;border:1px solid #302923;color:#f5f1eb;text-align:left;cursor:pointer;padding:0;overflow:hidden;min-width:0;transition:border-color .25s,transform .35s}.hf-work-card:hover{border-color:#ff6a24;transform:translateY(-5px)}.hf-work-card[hidden]{display:none}.hf-work-image{display:block;aspect-ratio:4/3;overflow:hidden;background:#201c18}.hf-work-image img{width:100%;height:100%;object-fit:cover;transition:transform .65s ease,filter .5s;filter:brightness(.96)}.hf-work-card:hover img{transform:scale(1.055);filter:brightness(1.07)}.hf-work-meta{display:grid;grid-template-columns:1fr auto;gap:8px;padding:18px 20px 22px}.hf-work-meta>span:first-child{grid-column:1/-1;font:11px monospace;letter-spacing:.1em;color:#ff9b64}.hf-work-meta strong{font-size:17px;font-weight:500}.hf-work-arrow{font-size:22px;color:#ff6a24}.hf-gallery-note{margin-top:28px;font-size:12px;opacity:.7}.hf-lightbox{position:fixed;inset:0;width:100vw;max-width:100vw;height:100vh;max-height:100vh;border:0;background:rgba(6,6,6,.97);color:#fff;padding:35px 65px;box-sizing:border-box}.hf-lightbox::backdrop{background:rgba(0,0,0,.92)}.hf-lightbox[open]{display:flex;align-items:center;justify-content:center}.hf-lightbox figure{margin:0;max-width:1100px;width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px}.hf-lightbox img{max-width:100%;max-height:calc(100vh - 115px);object-fit:contain}.hf-lightbox figcaption{font:13px monospace;letter-spacing:.09em;color:#e6d5ca}.hf-lightbox button{position:absolute;border:0;background:#ff6a24;color:#111;font-size:30px;cursor:pointer;width:45px;height:45px}.hf-lightbox-close{top:20px;right:22px}.hf-lightbox-prev{left:12px;top:50%}.hf-lightbox-next{right:12px;top:50%}@media(max-width:900px){.hf-work-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:560px){.hf-work-grid{grid-template-columns:1fr}.hf-lightbox{padding:50px 20px}.hf-lightbox-prev,.hf-lightbox-next{top:auto!important;bottom:12px}.hf-gallery-filters button{padding:10px;font-size:10px}}
/* Compact heat-flow transition */
.heat-transition{position:relative;background:#0b0b0b;color:#f9f6f2;padding:46px 6% 38px;overflow:hidden;border-top:1px solid #27201c;border-bottom:1px solid #342017}.heat-transition-heading{display:flex;justify-content:space-between;gap:15px;align-items:center;font:700 10px/1.5 monospace;letter-spacing:.17em;color:#b7aaa0}.heat-transition-eyebrow{color:#ff8c4b;display:flex;align-items:center;gap:12px}.heat-indicator{height:8px;width:8px;background:#ff6a24;border-radius:50%;box-shadow:0 0 16px #ff6a24;animation:heatpulse 1.8s infinite}.heat-transition-temp strong{color:#ff6a24;font-size:18px;margin-left:10px}.heat-transition-main{display:flex;justify-content:space-between;gap:36px;align-items:end;margin:26px 0 18px}.heat-transition-title{font-size:clamp(48px,7.4vw,130px);font-weight:800;line-height:.85;letter-spacing:-.075em}.heat-transition-title em{font-family:Georgia,serif;font-weight:400;letter-spacing:-.05em;color:#ff6a24}.heat-transition-description{max-width:275px;font-size:14px;line-height:1.7;color:#b9aea6;padding-bottom:8px}.heat-transition-description a{display:block;color:#fff;font:700 11px/1.5 sans-serif;letter-spacing:.11em;margin-top:20px}.heat-transition-description a span{color:#ff6a24;margin-left:8px}.heat-transition-pipe{display:block;width:100%;height:110px;overflow:visible}.heat-transition-pipe-base{fill:none;stroke:#4b3428;stroke-width:12;stroke-linecap:round;stroke-linejoin:round}.heat-transition-pipe-flow{fill:none;stroke:url(#transitionHeat);stroke-width:5;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:24 42;animation:heatcirculate 2.3s linear infinite}.heat-transition-end{filter:drop-shadow(0 0 10px #ff6a24)}@media(max-width:760px){.heat-transition{padding:38px 6% 24px}.heat-transition-main{display:block;margin:30px 0 14px}.heat-transition-title{font-size:clamp(48px,13vw,86px)}.heat-transition-description{max-width:100%;margin-top:26px}.heat-transition-pipe{height:70px}.heat-transition-temp{font-size:9px}}@media(prefers-reduced-motion:reduce){.heat-transition-pipe-flow,.heat-indicator{animation:none}}
/* Consistent vector arrows; avoid iOS emoji glyphs */
.hf-arrow-icon{display:inline-block;width:1em;height:1em;vertical-align:-.12em;flex-shrink:0;stroke:currentColor;fill:none}.primary-btn .hf-arrow-icon,.ghost-btn .hf-arrow-icon,.floating-call .hf-arrow-icon{width:19px;height:19px}.hf-work-arrow .hf-arrow-icon{width:23px;height:23px}
/* Calm hero and scroll-controlled thermal storytelling */
.hero{min-height:min(900px,94svh);display:flex;align-items:center}.hero-inner{width:100%;max-width:1440px;margin:0 auto;display:block!important;padding:clamp(120px,15vh,190px) 6% 130px!important}.hero-copy{max-width:960px!important;width:100%!important}.hero-copy h1{font-size:clamp(66px,10vw,165px);line-height:.94;letter-spacing:-.07em}.hero-copy p{max-width:590px}.hero .circuit{display:none!important}.hero-footer{bottom:24px}.hf-scroll-story{min-height:1100px;position:relative;grid-template-columns:40% 60%}.hf-scroll-story .thermal-copy{position:sticky;top:90px;height:calc(100vh - 90px);align-self:start}.hf-scroll-story .thermal-diagram{position:relative;min-height:1100px;justify-content:flex-start;padding-top:95px}.hf-scroll-story .house-heating{max-height:600px;overflow:visible}.hf-scroll-story .thermal-flow path{animation:none!important;stroke-dasharray:none!important;stroke-dashoffset:0!important;stroke:#ff6a24;opacity:.2;transition:opacity .25s}.hf-scroll-story .thermal-flow path.hf-scroll-path{opacity:1;stroke-dasharray:1 9999;stroke-dashoffset:0;stroke-width:5}.hf-scroll-story .house-heat path,.hf-scroll-story .house-radiator path{animation:none!important;opacity:var(--hf-heat, .2)}.hf-story-progress{height:2px;background:#4a3225;position:absolute;top:66px;left:24px;right:24px}.hf-story-progress span{display:block;width:0%;height:100%;background:#ff6a24;box-shadow:0 0 10px #ff6a24}.hf-floor-scene{margin:60px 0 20px;opacity:.25;transform:translateY(18px);transition:opacity .25s,transform .25s}.hf-floor-scene.is-active{opacity:1;transform:none}.hf-floor-scene svg{width:100%;height:auto}.hf-floor-base{fill:none;stroke:#5b4739;stroke-width:13;stroke-linecap:round;stroke-linejoin:round}.hf-floor-hot{fill:none;stroke:#ff792f;stroke-width:6;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:1 9999;filter:drop-shadow(0 0 5px #ff6a24)}.hf-floor-label,.hf-floor-caption{font:700 11px monospace;letter-spacing:.15em;color:#ff9b60}.hf-floor-caption{text-align:right;color:#b6a79a;margin-top:12px}
@media(max-width:850px){.hero{min-height:80svh}.hero-inner{padding:115px 6% 120px!important}.hero-copy h1{font-size:clamp(54px,12vw,94px)}.hf-scroll-story{display:block;min-height:0}.hf-scroll-story .thermal-copy{position:relative;top:auto;height:auto;padding:70px 6% 35px}.hf-scroll-story .thermal-diagram{min-height:0;padding:55px 5% 65px}.hf-story-progress{top:34px}.hf-floor-scene{margin-top:40px}.hf-scroll-story .house-heating{max-height:none}}
@media(prefers-reduced-motion:reduce){.hf-floor-scene{transition:none;transform:none}}
/* HeatFlow: scroll-driven premium architectural floor plan */
.hf-plan-section{height:310vh;background:#0b0b0b;color:#f8f5f1;position:relative}.hf-plan-sticky{position:sticky;top:0;min-height:100svh;display:grid;grid-template-columns:38% 62%;align-items:center;padding:95px 5% 55px;gap:2vw;overflow:hidden}.hf-plan-heading h2{font-size:clamp(50px,5.7vw,108px);letter-spacing:-.065em;line-height:.95;margin:28px 0}.hf-plan-heading h2 em{font-family:Georgia,serif;font-weight:400;color:#ff6a24}.hf-plan-heading p{max-width:400px;color:#b6aaa2;font-size:16px;line-height:1.7}.hf-plan-heading .kicker{color:#ff8b45}.hf-plan-step{margin-top:42px;font:700 11px monospace;letter-spacing:.12em;color:#e8d8cd;display:flex;gap:12px;align-items:center}.hf-plan-dot{width:8px;height:8px;background:#ff6a24;border-radius:50%;box-shadow:0 0 15px #ff6a24}.hf-plan-stage{background:radial-gradient(ellipse at center,#241b16,#100e0d 72%);border:1px solid #3a2b22;border-radius:14px;padding:18px 20px 12px;box-shadow:0 20px 90px #0008}.hf-plan-stage-top,.hf-plan-stage-bottom{display:flex;justify-content:space-between;gap:12px;color:#b7a79d;font:700 10px monospace;letter-spacing:.1em}.hf-plan-stage-bottom{color:#89796f}.hf-floorplan{display:block;width:100%;height:auto;max-height:75svh}.hf-plan-grid path{stroke:#44362c;stroke-width:.5;opacity:.3}.hf-room-surface{fill:#241d18;stroke:#4d3c30;stroke-width:1.5;transition:fill .25s}.hf-room.is-warm .hf-room-surface{fill:#3a271b}.hf-room-name{fill:#d7c7bb;font:700 13px monospace;letter-spacing:1px}.hf-room-temp{fill:#ff8d4a;font:12px monospace;opacity:.3}.hf-room.is-warm .hf-room-temp{opacity:1}.hf-room-base,.hf-supply-base{fill:none;stroke:#624c3a;stroke-width:7;stroke-linecap:round;stroke-linejoin:round}.hf-room-hot,.hf-supply-hot{fill:none;stroke:#ff752a;stroke-width:4;stroke-linecap:round;stroke-linejoin:round;filter:drop-shadow(0 0 5px #ff6a24)}.hf-plan-walls path{fill:none;stroke:#c0afa2;stroke-width:7;stroke-linejoin:round}.hf-pump-unit rect{fill:#30231b;stroke:#ff792e;stroke-width:2}.hf-pump-unit circle{fill:#4c2d1a;stroke:#ff9b55;stroke-width:2}.hf-pump-flame{fill:#ff6a24}.hf-pump-unit text{font:700 12px monospace;fill:#fff1e6;letter-spacing:.5px}.hf-pump-unit text.hf-pump-sub{font:10px monospace;fill:#b9a79a}.hf-pump-unit{opacity:.6}.hf-pump-unit.is-on{opacity:1}.hf-pump-unit.is-on circle{filter:drop-shadow(0 0 8px #ff6a24)}@media(max-width:850px){.hf-plan-section{height:260vh}.hf-plan-sticky{display:flex;flex-direction:column;justify-content:center;padding:85px 4% 22px;gap:16px}.hf-plan-heading{width:100%}.hf-plan-heading h2{font-size:clamp(42px,10vw,68px);margin:12px 0}.hf-plan-heading p{font-size:12px;line-height:1.5;margin:0;max-width:90%}.hf-plan-step{margin-top:12px;font-size:9px}.hf-plan-stage{width:100%;padding:10px}.hf-plan-stage-top,.hf-plan-stage-bottom{font-size:8px}.hf-floorplan{max-height:52svh}}@media(prefers-reduced-motion:reduce){.hf-plan-section{height:auto}.hf-plan-sticky{position:relative}}
/* Official HeatFlow brand, consistent across header and intro */
.hf-official-wordmark{display:flex;align-items:center;flex-shrink:0;line-height:0}.hf-official-wordmark img{display:block;width:clamp(175px,17vw,250px);height:64px;object-fit:contain;object-position:left center;mix-blend-mode:screen}.hf-intro-brand{width:min(400px,84vw);margin:0 auto 27px;opacity:0;transform:translateY(12px);animation:hfBrandReveal .65s ease .15s forwards}.hf-intro-brand img{width:100%;height:auto;max-height:150px;object-fit:contain;mix-blend-mode:screen}.ignition-center{width:min(430px,88vw)}@keyframes hfBrandReveal{to{opacity:1;transform:translateY(0)}}@media(max-width:760px){.hf-official-wordmark img{width:205px;height:60px}.header{padding-left:5%;padding-right:5%}.hf-intro-brand{width:min(320px,83vw)}}@media(prefers-reduced-motion:reduce){.hf-intro-brand{opacity:1;transform:none;animation:none}}
/* Official HeatFlow header visibility and professional reference */
.hf-official-wordmark img{width:clamp(230px,22vw,310px)!important;height:82px!important;object-fit:contain!important;object-position:left center!important}.header{min-height:100px!important}.hf-reference-section{background:#11100f;padding:105px 6%;border-top:1px solid #ffffff1b;border-bottom:1px solid #ffffff1b}.hf-reference-inner{max-width:1320px;margin:auto;display:grid;grid-template-columns:1.25fr .75fr;align-items:center;gap:70px}.hf-reference-copy h2{font-size:clamp(42px,5.2vw,85px);line-height:1;letter-spacing:-.065em;margin:28px 0}.hf-reference-copy h2 em{font-family:Georgia,serif;font-weight:400;color:#ff6a24}.hf-reference-copy p{color:#bdb6b0;line-height:1.8;max-width:540px;font-size:15px}.hf-reference-copy p strong{color:#f5ede7;font-weight:600}.hf-reference-logo{border:1px solid #ffffff24;min-height:250px;padding:30px;background:#080808;display:flex;flex-direction:column;justify-content:space-between;align-items:center;gap:25px}.hf-reference-logo span{color:#a99f98;font:700 10px monospace;letter-spacing:.14em;text-align:center}.hf-reference-logo img{max-width:260px;width:90%;height:145px;object-fit:contain}@media(max-width:850px){.hf-official-wordmark img{width:230px!important;height:72px!important}.header{min-height:90px!important}.hf-reference-section{padding:70px 6%}.hf-reference-inner{grid-template-columns:1fr;gap:30px}.hf-reference-logo{min-height:200px}.hf-reference-logo img{height:110px}}@media(max-width:400px){.hf-official-wordmark img{width:205px!important;height:68px!important}}
/* Stronger brand introduction and accessible CHUV logo */
.ignition-center{width:min(660px,94vw)!important}.hf-intro-brand{width:min(620px,92vw)!important;margin:0 auto 34px!important;filter:drop-shadow(0 0 24px #ff6a2414)}.hf-intro-brand img{display:block;width:100%;height:auto;max-height:240px!important;object-fit:contain}.ignition .boot-label{font-size:clamp(12px,1.2vw,15px);letter-spacing:.25em}.ignition .boot-progress,.ignition .boot-reading{max-width:430px;margin-left:auto;margin-right:auto}.hf-reference-logo{background:#161310;border-color:#5a4130}.hf-chuv-white-panel{width:100%;min-height:175px;background:#fff;display:flex;align-items:center;justify-content:center;border-radius:3px;padding:30px 22px}.hf-chuv-white-panel img{display:block;width:100%;max-width:340px!important;height:auto!important;max-height:115px;object-fit:contain}.hf-reference-logo small{font:700 10px monospace;letter-spacing:.11em;color:#b8aca3;text-align:center}@media(max-width:760px){.hf-intro-brand{width:min(390px,92vw)!important}.hf-intro-brand img{max-height:175px!important}.hf-chuv-white-panel{min-height:150px;padding:24px 16px}}
/* Larger official logo in navigation — requested adjustment only */
.hf-official-wordmark img{width:clamp(340px,30vw,440px)!important;height:118px!important;max-width:none!important}.header{height:132px!important;min-height:132px!important}@media(max-width:850px){.hf-official-wordmark img{width:310px!important;height:94px!important}.header{height:108px!important;min-height:108px!important}}@media(max-width:420px){.hf-official-wordmark img{width:270px!important;height:90px!important}.header{height:102px!important;min-height:102px!important}}
/* Fix header / hero overlap after logo enlargement */
.hero{height:auto!important;max-height:none!important;min-height:100svh!important}.hero-inner{padding-top:clamp(220px,20vh,270px)!important;padding-bottom:145px!important;min-height:100svh!important;align-items:start!important}.hero-copy{margin-top:0!important}.hero .eyebrow{position:relative;z-index:2}@media(max-width:850px){.hero-inner{padding-top:185px!important;padding-bottom:125px!important}.hero{min-height:100svh!important}}@media(max-width:420px){.hero-inner{padding-top:165px!important;padding-bottom:110px!important}}
/* Intro: progress visualized as a flowing heating circuit */
.hf-boot-circuit{width:min(430px,100%);margin:4px auto 8px}.hf-boot-circuit svg{width:100%;height:auto;display:block;overflow:visible}.hf-boot-pipe{fill:none;stroke:#554035;stroke-width:8;stroke-linecap:round;stroke-linejoin:round}.hf-boot-flow{fill:none;stroke:#ff772e;stroke-width:5;stroke-linecap:round;stroke-linejoin:round;filter:drop-shadow(0 0 5px #ff6a24)}.ignition .boot-reading{max-width:420px}.hf-intro-brand{margin-bottom:18px!important}.ignition .boot-label{margin-bottom:8px}@media(max-width:760px){.hf-boot-circuit{width:min(330px,100%)}}