.airway{height:820svh;margin-top:calc(var(--nav-h) * -1);--hero-bg:#efe7db;--film-w:max(106vw, 178svh);--film-h:calc(var(--film-w) * 9 / 16);--film-left:calc(73% - .747 * var(--film-w));--film-top:calc(50% - var(--film-h) / 2);--film-mask:radial-gradient(ellipse 30% 50% at 74.7% 50%, #000 74%, transparent 100%);position:relative}:root[data-theme=dark] .airway{--hero-bg:#121c19}.airway.is-still{height:auto}.airway-stage{isolation:isolate;background:var(--hero-bg);height:100svh;min-height:560px;position:sticky;top:0;overflow:hidden}.airway.is-still .airway-stage{position:relative}.airway-canvas{z-index:-3;opacity:0;width:100%;height:100%;transition:opacity 1s;position:absolute;inset:0}.airway.is-live .airway-canvas{opacity:1}.airway-stage:before,.airway-film{left:var(--film-left);top:var(--film-top);width:var(--film-w);height:var(--film-h);pointer-events:none;-webkit-mask-image:var(--film-mask);-webkit-mask-image:var(--film-mask);mask-image:var(--film-mask);position:absolute}.airway-stage:before{content:"";z-index:-4;background:url(/media/breath-light-poster.webp) 0 0/100% 100% no-repeat}:root[data-theme=dark] .airway-stage:before{background-image:url(/media/breath-dark-poster.webp)}.airway-film{z-index:-2;transform-origin:74.7% 40%;will-change:transform, opacity}.airway-film video{object-fit:cover;width:100%;height:100%}.airway-film video:not([src]){visibility:hidden}.airway-halo{z-index:-3;pointer-events:none;will-change:transform, opacity;left:calc(var(--film-left) + .747 * var(--film-w));top:calc(var(--film-top) + .47 * var(--film-h));width:calc(.56 * var(--film-w));height:calc(.56 * var(--film-w));margin:calc(-.28 * var(--film-w)) 0 0 calc(-.28 * var(--film-w));background:radial-gradient(circle,#f0b89c57,#f0b89c00 64%);border-radius:50%;position:absolute}:root[data-theme=dark] .airway-halo{background:radial-gradient(circle,#6cc7bd29,#6cc7bd00 64%)}.airway.is-still .airway-film,.airway.is-still .airway-halo{display:none}.airway:after{content:"";background:linear-gradient(to bottom, transparent, var(--ground));pointer-events:none;height:90px;position:absolute;bottom:0;left:0;right:0}@media (max-width:899px){.airway{--film-w:min(205vw, 92svh);--film-left:calc(50% - .747 * var(--film-w));--film-top:calc(var(--nav-h) + 34px - .14 * var(--film-h))}}@media (max-width:899px) and (max-height:700px){.airway{--film-w:min(205vw, 84svh);--film-top:calc(var(--nav-h) + 22px - .14 * var(--film-h))}}@media (max-width:899px) and (min-height:900px){.airway{--film-w:min(220vw, 100svh)}}@media (max-width:899px) and (min-height:1000px){.airway{--film-w:min(205vw, 110svh)}}.airway-shade{z-index:-2;pointer-events:none;opacity:0;background:linear-gradient(90deg,#081210b8 0%,#08121047 46%,#08121000 70%),linear-gradient(#08121000 55%,#08121099 100%);transition:opacity .9s;position:absolute;inset:0}.airway[data-scene="1"] .airway-shade,.airway[data-scene="2"] .airway-shade,.airway[data-scene="3"] .airway-shade{opacity:1}.airway-copy{padding-top:calc(var(--nav-h) + 24px);transition:transform .9s var(--ease), opacity .6s ease, visibility 0s linear 0s;align-content:center;gap:22px;padding-bottom:72px;display:grid;position:absolute;inset:0}.airway-copy>*{max-width:620px}.airway-copy .display{font-size:clamp(48px,7vw,108px)}.airway.is-diving .airway-copy,.airway:not([data-scene="0"]) .airway-copy{opacity:0;visibility:hidden;transition:transform .9s var(--ease), opacity .5s ease, visibility 0s linear .6s;transform:translateY(-40px)}.airway.is-live .airway-copy{will-change:transform, opacity;transition:visibility linear}.airway.is-live.is-diving .airway-copy{transition:visibility 0s linear .1s}.proof{font-family:var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--ts);flex-wrap:wrap;align-items:center;gap:10px 18px;font-size:12px;display:flex}.proof>span{align-items:center;gap:8px;display:inline-flex}.proof a{text-decoration:underline;-webkit-text-decoration-color:var(--hair-strong);text-decoration-color:var(--hair-strong);text-underline-offset:3px}.proof a:hover{color:var(--accent)}.airway-scenes{position:absolute;bottom:96px;left:0;right:0}.airway-cap{left:var(--gutter);right:var(--gutter);color:#fbf8f2;opacity:0;visibility:hidden;max-width:640px;transition:transform .9s var(--ease), opacity .5s ease, visibility 0s linear .6s;gap:14px;display:grid;position:absolute;bottom:0;transform:translateY(30px)}.airway-cap.on{opacity:1;visibility:visible;transition:transform .9s var(--ease) .1s, opacity .6s ease .1s, visibility 0s;transform:none}.airway-cap-t{font-family:var(--serif);letter-spacing:-.024em;font-size:clamp(38px,5.2vw,76px);font-weight:300;line-height:1}.airway-cap-b{color:#fbf8f2e6;max-width:34em;font-size:clamp(16px,1.3vw,19px)}.airway-meter{left:var(--gutter);right:var(--gutter);font-family:var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--tm);align-items:center;gap:16px;font-size:11px;transition:color .6s;display:flex;position:absolute;bottom:28px}.airway:not([data-scene="0"]) .airway-meter{color:#fbf8f2cc}.airway-meter-bar{opacity:.5;background:currentColor;flex:1;max-width:240px;height:1px;position:relative}.airway-meter-bar span{transform-origin:0;background:currentColor;position:absolute;inset:-.5px 0;transform:scaleX(0)}.airway.is-still .airway-meter{display:none}@media (max-width:899px){.airway{height:auto}.airway-stage{--par-y:0px;--par-s:1;--par-o:1;height:100svh;position:relative}.airway-shade,.airway-scenes,.airway-meter{display:none}.airway-stage:before,.airway-film{transform:translate3d(0, var(--par-y), 0) scale(var(--par-s));opacity:var(--par-o);transform-origin:74.7% 40%}.airway-film video{animation:9s ease-in-out infinite airFloat}.airway-halo{animation:9s ease-in-out -4.5s infinite airFloat}.airway-copy{padding-bottom:calc(var(--tab-h) + 28px);align-content:end;gap:14px}.airway-copy .kicker{letter-spacing:.1em;font-size:11px}.airway-copy .display{font-size:clamp(40px,11vw,60px)}.airway-copy .lede{font-size:15px;line-height:1.45}.airway-copy .btn-row{grid-template-columns:1fr 1fr;gap:10px;display:grid}.airway-copy .btn-row .btn{min-width:0;padding:0 14px}.airway-copy .proof{gap:6px 14px;font-size:11px}.airway-shade{background:linear-gradient(#08121000 28%,#0812104d 50%,#081210cc 100%)}.airway-scenes{bottom:calc(var(--tab-h) + 62px)}.airway-meter{bottom:calc(var(--tab-h) + 16px)}}@media (max-width:899px) and (max-height:700px){.airway-copy .lede{display:none}}@media (max-width:380px){.airway-copy .kicker:before{display:none}}@keyframes airFloat{50%{translate:0 -7px}}@media (prefers-reduced-motion:reduce){.airway-film video,.airway-halo{animation:none}}.intro{grid-template-columns:minmax(0,5fr) minmax(0,7fr);align-items:center;gap:clamp(32px,6vw,96px);display:grid}.intro .photo{aspect-ratio:4/5}.intro-body{gap:24px;display:grid}.creds-row{flex-wrap:wrap;gap:8px;display:flex}@media (max-width:899px){.intro{grid-template-columns:minmax(0,1fr)}.intro .photo{max-width:460px}}.method{grid-template-columns:minmax(0,5fr) minmax(0,7fr);align-items:start;gap:clamp(32px,6vw,96px);display:grid}.method-steps{counter-reset:step;border-top:1px solid var(--hair);display:grid}.method-step{border-bottom:1px solid var(--hair);grid-template-columns:64px minmax(0,1fr);gap:16px;padding:26px 0;display:grid}.method-step .n{font-family:var(--mono);color:var(--accent);letter-spacing:.1em;padding-top:6px;font-size:12px}.method-step p{color:var(--ts);margin-top:8px}.loop{top:calc(var(--nav-h) + 32px);gap:20px;display:grid;position:sticky}.loop svg{width:100%;height:auto;overflow:visible}.loop .axis{stroke:var(--hair-strong);stroke-width:1px;fill:none}.loop .curve{stroke:var(--accent);stroke-width:2.2px;fill:none;stroke-linecap:round;stroke-dasharray:1;stroke-dashoffset:1px;transition:stroke-dashoffset 2.6s var(--ease)}.loop .curve--in{stroke:var(--clay);transition-delay:1.4s}.loop.in .curve{stroke-dashoffset:0}.loop text{font-family:var(--mono);fill:var(--tm);letter-spacing:.08em;font-size:11px}@media (max-width:899px){.method{grid-template-columns:minmax(0,1fr)}.loop{max-width:520px;position:static}}@media (prefers-reduced-motion:reduce){.loop .curve{stroke-dashoffset:0;transition:none}}.mosaic{grid-template-columns:repeat(12,minmax(0,1fr));grid-auto-rows:clamp(120px,14vw,200px);gap:clamp(10px,1.4vw,18px);display:grid}.mosaic .photo{height:100%}.mosaic .m1{grid-area:1/1/4/6}.mosaic .m2{grid-area:1/6/3/13}.mosaic .m3{grid-area:3/6/5/9}.mosaic .m4{grid-area:3/9/5/13}.mosaic .m5{grid-area:4/1/5/6}.mosaic figcaption{color:#fbf8f2;font-family:var(--mono);letter-spacing:.08em;text-transform:uppercase;background:#0c1614a8;border-radius:999px;padding:4px 10px;font-size:11px;position:absolute;bottom:12px;left:12px}@media (max-width:699px){.mosaic{grid-template-columns:repeat(2,minmax(0,1fr));grid-auto-rows:150px}.mosaic .m1,.mosaic .m2,.mosaic .m3,.mosaic .m4,.mosaic .m5{grid-area:auto}.mosaic .m1{grid-row:span 2}.mosaic .m2{grid-column:1/-1}}.band{background:var(--bar);color:var(--bar-ink)}.band blockquote{font-family:var(--serif);letter-spacing:-.02em;max-width:20em;margin:0;font-size:clamp(30px,4.2vw,60px);font-weight:300;line-height:1.1}.band blockquote em{font-family:var(--serif-italic);color:#f0b89c}.band cite{font-style:normal;font-family:var(--mono);letter-spacing:.12em;text-transform:uppercase;color:#efe8dbbf;margin-top:28px;font-size:12px;display:block}.record{grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(16px,2.4vw,32px);display:grid}.record>*{min-width:0}.rec-card{border:1px solid var(--hair);border-radius:var(--radius);background:var(--card);align-content:start;gap:16px;padding:28px;display:grid}.rec-big{font-family:var(--serif);letter-spacing:-.03em;font-size:clamp(48px,5vw,72px);font-weight:300;line-height:1}.rec-card .photo{aspect-ratio:16/10;margin:-8px -8px 0}@media (max-width:899px){.record{grid-template-columns:minmax(0,1fr)}}.method-photo{aspect-ratio:4/5;top:calc(var(--nav-h) + 32px);position:sticky}@media (max-width:899px){.method-photo{max-width:460px;position:relative;top:0}}.report{color:#ede6da;background:#0f2a28;overflow:hidden}.report .h2 em{color:#f0b89c}.report-note{font-family:var(--mono);letter-spacing:.06em;color:#ede6dab8;max-width:26em;font-size:12px}.report-grid{grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(12px,1.6vw,20px);display:grid}.rp{background:linear-gradient(160deg,#ffffff0f,#ffffff05);border:1px solid #ede6da1f;border-radius:20px;align-content:start;gap:16px;min-width:0;margin:0;padding:22px;display:grid}.rp--loop{grid-area:span 2/span 5}.rp--breath{grid-column:span 4}.rp--spo2,.rp--diff{grid-column:span 3}.rp--sleep{grid-column:span 4}.rp-head{font-family:var(--mono);letter-spacing:.1em;text-transform:uppercase;justify-content:space-between;gap:12px;font-size:11px;display:flex}.rp-k{color:#ede6dab8}.rp-live{color:#8fd8cd;align-items:center;gap:8px;display:inline-flex}.rp-live i{background:#8fd8cd;border-radius:50%;width:7px;height:7px;animation:2.6s ease-in-out infinite rpBlink}@keyframes rpBlink{50%{opacity:.25}}.rp svg{width:100%;height:auto;overflow:visible}.rp text{font-family:var(--mono);fill:#ede6da99;letter-spacing:.06em;font-size:10px}.rp-axis{stroke:#ede6da59;fill:none}.rp-grid{stroke:#ede6da14;fill:none}.rp-draw{fill:none;stroke-width:2.4px;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:1;stroke-dashoffset:1px;transition:stroke-dashoffset 2.4s var(--ease)}.rp-out{stroke:#8fd8cd}.rp-in{stroke:#f0b89c;transition-delay:1s}.rp.in .rp-draw{stroke-dashoffset:0}.rp-dot{fill:#fbf8f2;filter:drop-shadow(0 0 6px #8fd8cd)}.rp figcaption{color:#ede6dadb;font-size:15px;line-height:1.5}.rp-wave{height:80px}.rp-wave-path{fill:none;stroke:#8fd8cd;stroke-width:2px;animation:10.4s linear infinite rpScroll}@keyframes rpScroll{to{transform:translate(-150px)}}.rp--breath svg{-webkit-mask-image:linear-gradient(90deg,#0000,#000 12% 88%,#0000);mask-image:linear-gradient(90deg,#0000,#000 12% 88%,#0000)}.rp-breath-lungs{justify-content:center;align-items:flex-end;gap:6px;height:64px;display:flex}.rp-breath-lungs span{transform-origin:50% 100%;background:#8fd8cd1f;border:1.5px solid #8fd8cd;border-radius:40% 40% 46% 46%/60% 60% 40% 40%;width:34px;height:56px;animation:5.2s ease-in-out infinite rpBreathe}.rp-breath-lungs span:first-child{border-radius:60% 30% 46% 46%/60% 60% 40% 40%}.rp-breath-lungs span:last-child{border-radius:30% 60% 46% 46%/60% 60% 40% 40%}@keyframes rpBreathe{0%,to{transform:scale(.9)}45%{transform:scale(1.06,1.08)}}.rp-list{gap:14px;margin:0;padding:0;list-style:none;display:grid}.rp-list li{border-bottom:1px solid #ede6da1a;gap:2px;padding-bottom:12px;display:grid}.rp-list b{font-family:var(--serif);color:#fbf8f2;font-size:22px;font-weight:400}.rp-list span{color:#ede6dacc;font-size:14px}@media (max-width:1023px){.rp--loop{grid-area:auto/span 12}.rp--breath,.rp--spo2,.rp--diff,.rp--sleep{grid-column:span 6}}@media (max-width:599px){.rp--breath,.rp--spo2,.rp--diff,.rp--sleep{grid-column:span 12}}@media (prefers-reduced-motion:reduce){.rp-draw{stroke-dashoffset:0;transition:none}.rp-wave-path,.rp-breath-lungs span,.rp-live i{animation:none}.rp-dot{display:none}}