.sinus-school{--an-ink:#133f39;--an-teal:#086d61;--an-turquoise:#56c9b3;--an-mint:#d8f1dc;--an-lime:#d9f584;--an-cream:#fffdf5;padding:100px 0;background:var(--an-mint);color:var(--an-ink);overflow:hidden}.anatomy-shell{width:min(1264px,calc(100% - 112px));margin:auto}.anatomy-heading{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-bottom:35px}.anatomy-kicker{display:block;font-size:10px;line-height:1.5;letter-spacing:.14em;font-weight:800}.anatomy-heading h2{max-width:720px;margin:13px 0 20px;font-size:clamp(40px,5.5vw,74px);line-height:.98}.anatomy-heading h2 em{color:var(--an-teal)}.anatomy-heading>div>p{max-width:580px;font-size:16px;line-height:1.6}.anatomy-heading-pals{position:relative;width:236px;height:175px;flex-shrink:0}.anatomy-heading-pals img{position:absolute;object-fit:contain;filter:drop-shadow(0 14px 12px #133f3914)}.anatomy-heading-pals img:first-child{width:150px;left:0;top:5px;transform:rotate(-12deg)}.anatomy-heading-pals img:last-child{width:155px;right:-17px;bottom:0;transform:rotate(12deg)}.anatomy-workshop{border-radius:30px;background:var(--an-ink);padding:12px;box-shadow:0 15px 0 #086d6110;isolation:isolate}.sinus-school button{font:inherit;color:inherit;border:0}.sinus-school button:focus-visible,.sinus-school input:focus-visible,.sinus-school summary:focus-visible,.sinus-school a:focus-visible{outline:3px solid var(--an-teal);outline-offset:4px}.anatomy-steps{display:grid;grid-template-columns:repeat(5,1fr);gap:7px;padding:8px 7px 19px}.anatomy-steps button{position:relative;display:flex;gap:11px;align-items:center;padding:14px 11px;border-radius:14px;background:transparent;color:var(--an-mint);font-size:12px;font-weight:700;text-align:left;transition:background .2s,color .2s}.anatomy-steps button>span{display:grid;place-items:center;width:29px;height:29px;flex-shrink:0;border:1px solid #d8f1dc55;border-radius:50%;font-size:10px;font-weight:650}.anatomy-steps button:hover{background:#d8f1dc15}.anatomy-steps button.is-active{background:var(--an-lime);color:var(--an-ink)}.anatomy-steps button.is-active>span{border-color:var(--an-ink)}.anatomy-steps button.is-complete:not(.is-active)>span{background:var(--an-teal);border-color:var(--an-turquoise)}.anatomy-steps button:focus-visible{outline-color:var(--an-lime)}.anatomy-main{display:grid;grid-template-columns:1fr 1fr;border-radius:22px;overflow:hidden;min-height:655px;background:var(--an-cream)}.anatomy-stage{position:relative;display:flex;flex-direction:column;min-width:0;background:var(--an-turquoise);padding:22px 16px 26px;background-image:radial-gradient(#086d611c 1px,transparent 1px);background-size:17px 17px}.anatomy-stage-top{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:0 10px}.anatomy-stage-label{font-size:9px;letter-spacing:.15em;font-weight:800}.anatomy-pause{background:#fffdf5b3!important;border:1px solid #086d6126!important;border-radius:20px;padding:7px 12px;font-size:10px!important;font-weight:650!important;min-width:76px}.anatomy-pause:disabled{opacity:.7}.anatomy-art{display:flex;align-items:center;justify-content:center;flex:1;min-width:0;min-height:345px}.anatomy-svg{width:100%;height:auto;max-width:510px;overflow:visible}.anatomy-head{fill:#fffdf5cc;stroke:var(--an-teal);stroke-width:2.5}.anatomy-structure{fill:none;stroke:#086d6166;stroke-width:2.5;stroke-linecap:round;stroke-linejoin:round}.anatomy-eye{fill:#d8f1dc;stroke:#086d6155;stroke-width:2}.anatomy-region{fill:var(--an-turquoise);stroke:var(--an-teal);stroke-width:2;stroke-linejoin:round;transition:fill .3s,filter .3s}.anatomy-region.is-selected{fill:var(--an-lime);stroke:var(--an-ink);stroke-width:3;filter:drop-shadow(0 3px 0 #086d6129)}.anatomy-region.anatomy-deep{fill:#086d6126;stroke-dasharray:4 3}.anatomy-region.anatomy-deep.is-selected{fill:var(--an-lime)}.anatomy-centerline{fill:none;stroke:#086d6133;stroke-width:1;stroke-dasharray:4 5}.anatomy-map-label{font:700 10px var(--body,Arial,sans-serif);fill:var(--an-ink);letter-spacing:.07em}.anatomy-map-label path,.anatomy-callout-line{fill:none;stroke:var(--an-teal);stroke-width:1.2}.anatomy-map-label .anatomy-dashed{stroke-dasharray:3 3}.anatomy-svg-note{font:11px var(--body,Arial,sans-serif);fill:var(--an-ink)}.anatomy-stage-controls{min-height:77px;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:12px;text-align:center}.anatomy-stage-controls>p{font-size:11px;line-height:1.5}.anatomy-view-toggle{display:inline-flex;border:1px solid #086d6140;border-radius:100px;padding:4px;background:#fffdf563;gap:3px}.anatomy-view-toggle button{padding:10px 18px;border-radius:100px;background:transparent;font-size:11px;font-weight:700}.anatomy-view-toggle button[aria-pressed=true]{background:var(--an-ink);color:var(--an-cream)}.anatomy-view-toggle button span{display:inline-block;margin-left:8px}.anatomy-lesson{padding:35px 38px 27px;display:flex;flex-direction:column}.anatomy-chapter{display:block;font-size:9px;font-weight:800;letter-spacing:.17em;color:var(--an-teal);margin-bottom:14px}.anatomy-title{font:600 clamp(28px,3.1vw,43px)/1.02 var(--display,Arial,sans-serif);letter-spacing:-.045em;margin:0 0 15px;max-width:420px}.anatomy-title:focus{outline:none}.anatomy-intro{font-size:13px;line-height:1.7;max-width:440px}.anatomy-interaction{margin:23px 0 8px}.anatomy-sinus-buttons,.anatomy-symptom-buttons{display:grid;grid-template-columns:1fr 1fr;gap:7px}.anatomy-sinus-buttons button,.anatomy-symptom-buttons button{display:flex;align-items:center;gap:9px;background:#d8f1dc77;border:1px solid #086d6124;padding:10px 13px;border-radius:12px;font-size:12px;font-weight:650;text-align:left}.anatomy-sinus-buttons button>span{display:grid;place-items:center;width:21px;height:21px;border:1px solid #086d6140;border-radius:50%;font-size:10px}.anatomy-sinus-buttons button[aria-pressed=true],.anatomy-symptom-buttons button[aria-pressed=true]{background:var(--an-teal);border-color:var(--an-teal);color:var(--an-cream)}.anatomy-sinus-buttons button[aria-pressed=true]>span{border-color:#fffdf577}.anatomy-sinus-fact{padding:17px 0 0;min-height:130px}.anatomy-sinus-fact>span{display:block;font-size:9px;text-transform:uppercase;font-weight:700;letter-spacing:.1em;color:var(--an-teal);margin-bottom:5px}.anatomy-sinus-fact h4{font:600 22px/1.15 var(--display,Arial,sans-serif);letter-spacing:-.03em;margin:0 0 7px}.anatomy-sinus-fact p,.anatomy-side-note,.anatomy-symptom-fact{font-size:12px;line-height:1.65}.anatomy-guide{display:flex;gap:12px;align-items:center;margin:9px 0 24px;background:var(--an-mint);border-radius:15px;padding:11px 15px 11px 5px}.anatomy-guide img{width:66px;height:60px;object-fit:contain;flex-shrink:0;transform:rotate(-7deg)}.anatomy-guide p{font-size:11px;line-height:1.5}.anatomy-guide strong{display:block;font-size:9px;font-weight:800;letter-spacing:.04em;margin-bottom:3px}.anatomy-guide p span{display:block}.anatomy-checkpoint{margin-top:auto;border-top:1px solid #086d6126;padding-top:17px}.anatomy-checkpoint .anatomy-kicker{font-size:8px;color:var(--an-teal)}.anatomy-question{font-size:12px;font-weight:650;margin:6px 0 10px!important;line-height:1.5}.anatomy-answers{display:flex;flex-wrap:wrap;gap:7px}.anatomy-answers button{border:1px solid #086d6138;background:transparent;border-radius:9px;padding:9px 12px;font-size:10px;font-weight:650;transition:background .2s}.anatomy-answers button:hover,.anatomy-answers button.is-chosen{background:var(--an-lime);border-color:var(--an-teal)}.anatomy-feedback{font-size:11px;line-height:1.6;margin-top:9px!important;min-height:18px}.anatomy-footer{display:flex;align-items:center;justify-content:space-between;gap:15px;color:var(--an-mint);padding:19px 15px 8px}.anatomy-footer p{font-size:10px}.anatomy-progress{font-weight:800;margin-right:13px}.anatomy-footer>div{display:flex;gap:8px}.anatomy-footer button{border-radius:100px;padding:11px 19px;font-size:11px;font-weight:700}.anatomy-back{background:transparent;border:1px solid #d8f1dc55!important}.anatomy-next{background:var(--an-lime);color:var(--an-ink)!important;min-width:130px}.anatomy-next span{margin-left:14px}.anatomy-footer button:focus-visible{outline-color:var(--an-lime)}.anatomy-sources{margin-top:25px;border-bottom:1px solid #086d612e;padding-bottom:19px;font-size:12px}.anatomy-sources summary{display:flex;align-items:center;justify-content:space-between;gap:12px;cursor:pointer;list-style:none;font-weight:650}.anatomy-sources summary::-webkit-details-marker{display:none}.anatomy-sources summary>span{font-size:21px;font-weight:400}.anatomy-sources[open] summary>span{transform:rotate(45deg)}.anatomy-sources>div{max-width:900px;padding-top:14px;line-height:1.8}.anatomy-sources ul{margin:12px 0 0;padding-left:19px}.anatomy-sources a{text-underline-offset:3px}.anatomy-nasal-space{fill:var(--an-mint);stroke:var(--an-teal);stroke-width:2}.anatomy-air-route{fill:none;stroke:var(--an-ink);stroke-width:5;stroke-linecap:round;stroke-dasharray:5 13;animation:anatomy-airflow 1.2s linear infinite}.anatomy-flow-dots{fill:var(--an-lime);stroke:var(--an-teal);stroke-width:1;animation:anatomy-air-pulse 3s ease-in-out infinite}.anatomy-air-benefits{display:flex;gap:8px;margin-bottom:17px}.anatomy-air-benefits>span{padding:9px 18px;border-radius:50px;background:var(--an-lime);font:600 17px var(--display,Arial,sans-serif);letter-spacing:-.025em}.anatomy-side-note{color:#365e52}.anatomy-channel{fill:var(--an-cream);stroke:var(--an-teal);stroke-width:2}.anatomy-mucus-layer{fill:var(--an-lime);stroke:var(--an-teal);stroke-width:1}.anatomy-lining{fill:var(--an-teal)}.anatomy-cilium{fill:none;stroke:var(--an-ink);stroke-width:3;stroke-linecap:round;transform-box:fill-box;transform-origin:center bottom;animation:anatomy-cilia 1.4s ease-in-out infinite;animation-delay:var(--cilia-delay,0s)}.anatomy-mucus-dot{fill:var(--an-teal);animation:anatomy-mucus var(--flow-duration,5s) linear infinite;animation-delay:var(--drop-delay,0s)}.anatomy-mucus-dot circle{fill:var(--an-cream)}.anatomy-direction{fill:none;stroke:var(--an-teal);stroke-width:2;stroke-linecap:round}.anatomy-swelling-wall{fill:var(--an-teal);stroke:var(--an-ink);stroke-width:2;transition:transform .12s linear}.anatomy-wall-top{transform:translateY(var(--swelling-top,0px))}.anatomy-wall-bottom{transform:translateY(var(--swelling-bottom,0px))}.anatomy-opening-guide{stroke:var(--an-ink);stroke-width:1.5;stroke-dasharray:2 4}.anatomy-flow-restricted .anatomy-mucus-dot{animation-name:anatomy-mucus-restricted}.anatomy-flow-restricted .anatomy-opening-guide{opacity:0}.anatomy-legend{display:flex;gap:22px;align-items:center;font-size:10px;font-weight:650}.anatomy-legend span{display:flex;align-items:center;gap:6px}.anatomy-legend i{display:block;width:10px;height:10px;border-radius:50%;background:var(--an-lime);border:1px solid var(--an-teal)}.anatomy-legend span:nth-child(2) i{background:var(--an-ink)}.anatomy-legend span:nth-child(3) i{background:var(--an-teal)}.anatomy-mini-process{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;margin-bottom:20px}.anatomy-mini-process>span{background:var(--an-mint);padding:15px 9px;border-radius:12px;font-size:10px;font-weight:700}.anatomy-mini-process b{display:block;font:500 27px var(--display,Arial,sans-serif);letter-spacing:-.05em;color:var(--an-teal);margin-bottom:8px}.anatomy-slider-box{background:var(--an-mint);border-radius:15px;padding:20px}.anatomy-slider-box>div:first-child{display:flex;align-items:center;justify-content:space-between;gap:10px}.anatomy-slider-box label{font-size:12px;font-weight:700}.anatomy-swelling-output{background:var(--an-cream);padding:4px 8px;border-radius:6px;font-size:9px;font-weight:700;white-space:nowrap}.anatomy-slider-box input{width:100%;height:35px;margin:15px 0 3px;accent-color:var(--an-teal);cursor:ew-resize}.anatomy-slider-scale{display:flex;justify-content:space-between;font-size:9px}.anatomy-slider-box>p{font-size:10px;line-height:1.6;margin-top:15px!important;border-top:1px solid #086d6126;padding-top:13px}.anatomy-symptom-fact{min-height:59px;padding-top:13px}.anatomy-symptom-buttons button{justify-content:center}.anatomy-signal-scene{width:100%;max-width:500px;height:390px;position:relative}.anatomy-orbit{position:absolute;border:1px dashed #086d6170;border-radius:50%;width:290px;height:290px;left:50%;top:50%;transform:translate(-50%,-50%)}.anatomy-orbit-two{width:365px;height:365px}.anatomy-signal-boop{position:absolute;width:240px;left:50%;top:42%;transform:translate(-50%,-50%) rotate(-6deg);animation:anatomy-boop-bob 5s ease-in-out infinite;filter:drop-shadow(0 18px 15px #086d6130)}.anatomy-signal-mallow{position:absolute;width:145px;right:9%;bottom:8%;transform:rotate(9deg);animation:anatomy-mallow-bob 6s ease-in-out infinite}.anatomy-signal-tag{position:absolute;background:var(--an-cream);border:1px solid #086d6140;border-radius:100px;padding:10px 17px;font:600 17px var(--display,Arial,sans-serif);letter-spacing:-.025em;box-shadow:0 5px 0 #086d6114;z-index:1}.anatomy-tag-one{left:3%;top:12%;transform:rotate(-10deg)}.anatomy-tag-two{right:2%;top:38%;transform:rotate(7deg)}.anatomy-tag-three{left:4%;bottom:17%;transform:rotate(-5deg)}
@keyframes anatomy-airflow{to{stroke-dashoffset:-36}}@keyframes anatomy-air-pulse{0%,100%{opacity:.4;transform:translateX(-6px)}50%{opacity:1;transform:translateX(6px)}}@keyframes anatomy-cilia{0%,100%{transform:rotate(-17deg)}45%{transform:rotate(23deg)}}@keyframes anatomy-mucus{0%{transform:translateX(0);opacity:0}8%,90%{opacity:1}100%{transform:translateX(365px);opacity:0}}@keyframes anatomy-mucus-restricted{0%{transform:translateX(0);opacity:0}10%,85%{opacity:1}100%{transform:translateX(270px);opacity:0}}@keyframes anatomy-boop-bob{0%,100%{transform:translate(-50%,-50%) rotate(-6deg)}50%{transform:translate(-50%,calc(-50% - 12px)) rotate(4deg)}}@keyframes anatomy-mallow-bob{0%,100%{transform:translateY(0) rotate(9deg)}50%{transform:translateY(-10px) rotate(-3deg)}}
.anatomy-paused *,.motion-paused .sinus-school *{animation-play-state:paused!important}.motion-paused .sinus-school *{transition:none!important}@media(prefers-reduced-motion:reduce){.sinus-school *{animation:none!important;transition:none!important}.anatomy-mucus-dot:nth-child(2){transform:translateX(90px)}.anatomy-mucus-dot:nth-child(3){transform:translateX(180px)}.anatomy-mucus-dot:nth-child(4){transform:translateX(260px)}}
@media(min-width:1500px){.anatomy-main{min-height:700px}.anatomy-lesson{padding:42px 45px 32px}}@media(max-width:1050px){.anatomy-shell{width:calc(100% - 56px)}.anatomy-steps button{gap:7px;font-size:10px;padding:12px 7px}.anatomy-lesson{padding:28px 25px 24px}.anatomy-guide{margin-bottom:19px}.anatomy-stage{padding-inline:9px}.anatomy-stage-label{font-size:8px}.anatomy-footer-note{display:none}.anatomy-signal-tag{font-size:14px}.anatomy-signal-boop{width:205px}.anatomy-orbit{width:245px;height:245px}.anatomy-orbit-two{width:300px;height:300px}}
@media(max-width:760px){.sinus-school{padding:65px 0}.anatomy-shell{width:calc(100% - 32px)}.anatomy-heading{margin-bottom:25px;gap:0}.anatomy-heading h2{font-size:44px;max-width:420px}.anatomy-heading>div>p{font-size:14px;max-width:420px}.anatomy-heading-pals{width:130px;height:150px;margin-left:-40px;opacity:.9;align-self:flex-start;margin-top:22px}.anatomy-heading-pals img:first-child{width:96px;left:0;top:0}.anatomy-heading-pals img:last-child{width:100px;right:-13px;bottom:13px}.anatomy-heading>div:first-child{position:relative;z-index:1}.anatomy-heading h2{max-width:310px}.anatomy-heading p{padding-right:30px}.anatomy-workshop{padding:8px;border-radius:23px}.anatomy-steps{gap:3px;padding:5px 1px 12px}.anatomy-steps button{flex-direction:column;justify-content:flex-start;text-align:center;gap:7px;font-size:8px;line-height:1.25;padding:9px 2px;border-radius:11px}.anatomy-steps button>span{width:25px;height:25px;font-size:9px}.anatomy-main{grid-template-columns:1fr;min-height:0;border-radius:17px}.anatomy-stage{padding:17px 13px 20px}.anatomy-art{min-height:0;height:340px}.anatomy-svg{max-width:380px;max-height:340px}.anatomy-stage-top{padding:0 3px;margin-bottom:3px}.anatomy-stage-controls{min-height:60px;gap:7px}.anatomy-view-toggle button{font-size:10px;padding:8px 16px}.anatomy-stage-controls>p{font-size:10px}.anatomy-lesson{padding:28px 25px 23px}.anatomy-title{font-size:35px;max-width:450px}.anatomy-intro{font-size:13px}.anatomy-sinus-fact{min-height:0;padding-bottom:10px}.anatomy-interaction{margin-top:20px}.anatomy-guide{margin-top:14px}.anatomy-checkpoint{margin-top:4px}.anatomy-feedback{min-height:0}.anatomy-footer{padding:16px 7px 8px}.anatomy-footer button{padding:10px 14px;font-size:10px}.anatomy-next{min-width:115px}.anatomy-progress{font-size:10px;margin:0}.anatomy-footer>div{gap:6px}.anatomy-sources{font-size:11px;margin-top:21px}.anatomy-signal-scene{height:340px;max-width:390px}.anatomy-signal-boop{width:215px}.anatomy-signal-mallow{width:130px}.anatomy-signal-tag{font-size:16px}.anatomy-orbit-two{width:310px;height:310px}.anatomy-tag-one{left:3%;top:9%}.anatomy-tag-two{right:1%;top:38%}.anatomy-tag-three{left:1%;bottom:12%}}
@media(max-width:380px){.anatomy-shell{width:calc(100% - 24px)}.anatomy-heading h2{font-size:38px;max-width:260px}.anatomy-heading-pals{display:none}.anatomy-heading p{padding-right:0}.anatomy-art{height:290px}.anatomy-svg{max-height:290px}.anatomy-lesson{padding:24px 19px}.anatomy-title{font-size:31px}.anatomy-sinus-buttons button{padding:10px;font-size:11px}.anatomy-slider-box{padding:15px}.anatomy-signal-scene{height:290px}.anatomy-signal-boop{width:190px}.anatomy-signal-mallow{width:110px}.anatomy-signal-tag{font-size:14px;padding:8px 12px}}

.anatomy-map-svg [data-region]{cursor:pointer}.anatomy-map-svg [data-region]:hover{fill:var(--an-lime)}.anatomy-map-svg [data-region]:focus-visible{outline:none;stroke-width:4;filter:drop-shadow(0 0 4px #133f3966)}