:root {
  --teal: #4ca5a2;
  --teal-deep: #102423;
  --teal-dark: #173735;
  --mint: #59c7a6;
  --red: #e71924;
  --ink: #102423;
  --paper: #f3f7f6;
  --white: #fff;
  --muted: #58706e;
  --line: rgba(16, 36, 35, .14);
  --radius: 30px;
  --shadow: 0 30px 80px rgba(9, 36, 34, .18);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif;
  color-scheme: light;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--teal-deep); -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
.shell { width: min(1180px, calc(100% - 48px)); margin-inline: auto; }
.section { padding: 112px 0; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; left: 16px; top: 12px; z-index: 100; padding: 12px 16px; background: white; border-radius: 12px; transform: translateY(-150%); }
.skip-link:focus { transform: none; }

.site-header { position: fixed; inset: 0 0 auto; z-index: 50; padding: 18px 0; transition: .3s ease; }
.site-header.scrolled { padding: 10px 0; background: rgba(16, 36, 35, .88); border-bottom: 1px solid rgba(255,255,255,.1); backdrop-filter: blur(18px); }
.nav-shell { width: min(1240px, calc(100% - 36px)); margin: auto; display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: 12px; color: white; text-decoration: none; font-weight: 750; font-size: 19px; letter-spacing: -.02em; }
.brand img { border-radius: 12px; box-shadow: 0 7px 22px rgba(0,0,0,.2); }
.site-nav { display: flex; align-items: center; gap: 30px; color: rgba(255,255,255,.76); font-size: 14px; font-weight: 650; }
.site-nav a { text-decoration: none; transition: color .2s; }
.site-nav a:hover { color: white; }
.site-nav .nav-cta { padding: 12px 18px; color: var(--ink); background: white; border-radius: 999px; }
.menu-toggle { display: none; width: 44px; height: 44px; padding: 0; border: 0; background: transparent; }
.menu-toggle span:not(.sr-only) { display: block; width: 22px; height: 2px; margin: 6px auto; background: white; transition: .25s; }

.hero { position: relative; min-height: 820px; overflow: hidden; isolation: isolate; background: var(--teal-deep); color: white; }
.hero::before { content: ""; position: absolute; inset: 0; z-index: -3; background: linear-gradient(110deg, rgba(16,36,35,.98) 12%, rgba(20,57,54,.93) 55%, rgba(39,121,116,.65)), url("assets/background.webp") center/cover; }
.hero::after { content: ""; position: absolute; inset: 0; z-index: -2; opacity: .2; background-image: linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px); background-size: 72px 72px; mask-image: linear-gradient(to bottom, transparent, black 25%, transparent 92%); }
.hero-glow { position: absolute; z-index: -1; border-radius: 50%; filter: blur(10px); }
.hero-glow-one { width: 520px; height: 520px; right: -120px; top: 80px; background: rgba(76,165,162,.22); }
.hero-glow-two { width: 360px; height: 360px; left: 30%; bottom: -180px; background: rgba(89,199,166,.12); }
.hero-grid { min-height: 820px; padding-top: 112px; display: grid; grid-template-columns: 1.08fr .92fr; align-items: center; gap: 60px; }
.eyebrow { margin: 0 0 22px; display: flex; align-items: center; gap: 11px; color: rgba(255,255,255,.68); font-size: 12px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.eyebrow span { width: 28px; height: 2px; background: var(--mint); }
.eyebrow.dark { color: var(--muted); }
.hero h1 { margin: 0; font-size: clamp(54px, 6.2vw, 90px); line-height: .98; letter-spacing: -.062em; max-width: 780px; }
.hero h1 em { color: var(--mint); font-style: normal; }
.hero-lede { margin: 30px 0 0; max-width: 620px; color: rgba(255,255,255,.72); font-size: clamp(18px, 2vw, 21px); line-height: 1.58; }
.hero-actions { display: flex; align-items: center; gap: 28px; margin-top: 36px; }
.button { display: inline-flex; justify-content: center; align-items: center; gap: 12px; min-height: 56px; padding: 14px 22px; border-radius: 16px; font-weight: 780; text-decoration: none; transition: transform .2s, box-shadow .2s, background .2s; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--mint); color: var(--ink); box-shadow: 0 14px 32px rgba(89,199,166,.18); }
.button-primary svg { width: 23px; fill: currentColor; }
.button-primary span { line-height: 1.05; }
.button-primary small { display: block; font-size: 10px; font-weight: 600; letter-spacing: .01em; }
.text-link { color: white; font-weight: 700; text-decoration: none; }
.text-link span { margin-left: 6px; color: var(--mint); }
.availability { margin-top: 20px; color: rgba(255,255,255,.45); font-size: 13px; }

.device-stage { position: relative; display: grid; place-items: center; padding: 30px 0 10px; }
.phone { position: relative; width: min(340px, 84vw); aspect-ratio: .478; padding: 10px; border: 1px solid rgba(255,255,255,.25); border-radius: 54px; background: #070d0d; box-shadow: 0 60px 100px rgba(0,0,0,.45), inset 0 0 0 1px rgba(255,255,255,.09); transform: rotate(2.2deg); }
.phone::before { content: ""; position: absolute; z-index: 2; left: 50%; top: 18px; width: 92px; height: 24px; border-radius: 20px; background: #071110; transform: translateX(-50%); }
.phone-screen { position: relative; height: 100%; overflow: hidden; border-radius: 45px; background: #4ca5a2; }
.app-screenshot { display: block; width: 100%; height: 100%; object-fit: cover; }
.phone-status { display: flex; justify-content: space-between; padding: 19px 24px 0; font-size: 11px; font-weight: 800; }
.status-icons { letter-spacing: 2px; font-size: 9px; }
.app-top { display: flex; align-items: center; justify-content: space-between; padding: 40px 25px 0; }
.app-mark { font-size: 24px; transform: rotate(90deg); }
.pro-pill { padding: 7px 11px; border-radius: 999px; background: var(--red); font-size: 11px; font-weight: 900; }
.app-readout { height: 125px; display: flex; flex-direction: column; align-items: center; justify-content: end; gap: 5px; font-size: 14px; }
.app-readout .ready { font-size: 15px; font-weight: 850; letter-spacing: .08em; }
.breath-demo { position: relative; display: block; width: 210px; margin: 36px auto 0; padding: 0; border: 0; border-radius: 50%; background: transparent; cursor: pointer; filter: drop-shadow(0 25px 22px rgba(17,48,45,.32)); transition: transform .18s; }
.breath-demo:hover { transform: scale(1.025); }
.breath-demo:active, .breath-demo.active { transform: scale(.94); }
.demo-result { position: absolute; inset: 42% 0 auto; z-index: 3; margin: auto; width: 180px; height: 180px; display: flex; align-items: center; justify-content: center; gap: 8px; border-radius: 50%; background: white; color: var(--red); opacity: 0; transform: scale(.8); pointer-events: none; transition: .35s ease; }
.demo-result.show { opacity: 1; transform: scale(1); }
.demo-result strong { font-size: 56px; letter-spacing: -.06em; }
.demo-result span { color: var(--ink); font-size: 11px; font-weight: 700; line-height: 1.2; }
.app-footer { position: absolute; inset: auto 28px 25px; display: flex; justify-content: space-between; font-size: 24px; }
.orbit { position: absolute; border: 1px solid rgba(89,199,166,.24); border-radius: 50%; }
.orbit-one { width: 520px; height: 520px; }
.orbit-two { width: 420px; height: 420px; border-style: dashed; animation: spin 36s linear infinite; }
.demo-hint { color: rgba(255,255,255,.44); font-size: 12px; margin: 18px 0 0; }

.intro-strip { padding: 56px 0; background: #16312f; color: white; border-top: 1px solid rgba(255,255,255,.08); }
.quality-grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.quality-grid article { position: relative; padding: 8px 44px; border-left: 1px solid rgba(255,255,255,.12); }
.quality-grid article:first-child { padding-left: 0; border-left: 0; }
.quality-number { color: var(--mint); font-size: 11px; font-weight: 800; }
.quality-grid h2 { margin: 16px 0 9px; font-size: 20px; }
.quality-grid p { margin: 0; color: rgba(255,255,255,.58); line-height: 1.55; font-size: 14px; }

.section-light { background: var(--paper); }
.split-heading { display: grid; grid-template-columns: 1fr .72fr; gap: 100px; align-items: end; }
.split-heading h2, .pro-heading h2, .methodology-title h2, .organization-card h2 { margin: 0; font-size: clamp(40px, 5vw, 66px); line-height: 1.04; letter-spacing: -.05em; }
.section-lede { margin: 0; color: var(--muted); font-size: 18px; line-height: 1.65; }
.steps { margin-top: 70px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.step { position: relative; min-height: 320px; padding: 34px; overflow: hidden; background: white; border: 1px solid var(--line); border-radius: var(--radius); }
.step::after { content: ""; position: absolute; width: 150px; height: 150px; right: -70px; bottom: -70px; border-radius: 50%; background: rgba(76,165,162,.09); }
.step-index { position: absolute; top: 28px; right: 28px; color: #a3b3b1; font-size: 13px; font-weight: 800; }
.step-icon { width: 66px; height: 66px; display: grid; place-items: center; color: var(--teal); background: #e7f2f1; border-radius: 20px; font-size: 22px; font-weight: 850; }
.step-icon svg { width: 34px; height: 34px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.step-icon svg circle { fill: currentColor; stroke: none; }
.step-icon.button-icon { overflow: hidden; background: white; }
.step-icon.button-icon img { width: 58px; height: 58px; }
.step h3 { margin: 60px 0 12px; font-size: 25px; letter-spacing: -.03em; }
.step p { margin: 0; color: var(--muted); line-height: 1.6; }

.rhythm-lab { position: relative; overflow: hidden; color: white; background: #173735; }
.rhythm-lab::before { content: ""; position: absolute; inset: 0; opacity: .08; background: url("assets/background.webp") center/cover; }
.rhythm-heading, .lab-card, .lab-note { position: relative; }
.rhythm-heading { display: grid; grid-template-columns: 1fr .75fr; align-items: end; gap: 90px; }
.rhythm-heading h2 { margin: 0; font-size: clamp(40px, 5vw, 66px); line-height: 1.04; letter-spacing: -.05em; }
.rhythm-heading > p { margin: 0; color: rgba(255,255,255,.62); font-size: 18px; line-height: 1.65; }
.lab-card { margin-top: 60px; min-height: 470px; display: grid; grid-template-columns: .85fr 1.15fr .85fr; overflow: hidden; border: 1px solid rgba(255,255,255,.11); border-radius: 32px; background: rgba(7,25,24,.46); box-shadow: 0 40px 90px rgba(0,0,0,.2); backdrop-filter: blur(10px); }
.lab-controls, .lab-callout { padding: 42px 36px; display: flex; flex-direction: column; justify-content: center; }
.lab-controls { border-right: 1px solid rgba(255,255,255,.1); }
.lab-callout { border-left: 1px solid rgba(255,255,255,.1); }
.lab-callout > img { width: 72px; margin-bottom: 25px; border-radius: 19px; box-shadow: 0 16px 34px rgba(0,0,0,.24); }
.lab-callout h3 { margin: 12px 0 14px; font-size: 27px; line-height: 1.12; letter-spacing: -.035em; }
.lab-callout p { margin: 0; color: rgba(255,255,255,.58); font-size: 14px; line-height: 1.58; }
.lab-callout .text-link { align-self: flex-start; margin-top: 25px; color: var(--mint); }
.control-heading { display: flex; justify-content: space-between; align-items: baseline; gap: 18px; }
.control-heading label, .result-kicker { color: rgba(255,255,255,.54); font-size: 11px; font-weight: 850; letter-spacing: .1em; text-transform: uppercase; }
.control-heading output { color: var(--mint); font-size: 30px; font-weight: 850; letter-spacing: -.04em; }
.control-heading output small { font-size: 12px; letter-spacing: 0; }
.rate-control input { width: 100%; margin: 28px 0 8px; accent-color: var(--mint); cursor: pointer; }
.ratio-control { margin-top: 42px; padding-top: 38px; border-top: 1px solid rgba(255,255,255,.1); }
.range-labels { display: flex; justify-content: space-between; color: rgba(255,255,255,.32); font-size: 10px; }
.lab-start { width: 100%; margin-top: 38px; border: 0; background: var(--mint); color: var(--ink); cursor: pointer; }
.lab-start.running { background: rgba(255,255,255,.12); color: white; }
.lab-instruction { margin: 30px 0 0; color: rgba(255,255,255,.42); font-size: 12px; line-height: 1.5; }
.lab-progress { display: flex; gap: 7px; margin-top: 14px; }
.lab-progress span { width: 8px; height: 8px; border-radius: 50%; background: rgba(255,255,255,.16); transition: .2s; }
.lab-progress span.recorded { background: var(--mint); box-shadow: 0 0 14px rgba(89,199,166,.5); }
.breathing-stage { position: relative; min-height: 470px; display: flex; flex-direction: column; align-items: center; justify-content: center; background: radial-gradient(circle, rgba(76,165,162,.18), transparent 64%); }
.phase-label { min-width: 90px; padding: 7px 12px; text-align: center; border-radius: 99px; color: rgba(255,255,255,.62); background: rgba(255,255,255,.07); font-size: 11px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.animated-lungs { position: relative; width: 230px; height: 230px; margin: 4px 0 10px; display: grid; place-items: center; }
.animated-lungs svg { position: relative; z-index: 2; width: 220px; overflow: visible; fill: none; stroke: rgba(255,255,255,.82); stroke-width: 7; stroke-linecap: round; stroke-linejoin: round; filter: drop-shadow(0 16px 26px rgba(0,0,0,.22)); }
.animated-lungs .lung { fill: rgba(231,25,36,.88); stroke: white; transform-box: fill-box; transform-origin: center; }
.animated-lungs.breathing:not(.js-driven) .left { animation: lung-left var(--breath-duration, 3.75s) ease-in-out infinite; }
.animated-lungs.breathing:not(.js-driven) .right { animation: lung-right var(--breath-duration, 3.75s) ease-in-out infinite; }
.breath-wave { position: absolute; inset: 50%; width: 160px; height: 160px; border: 1px solid rgba(89,199,166,.34); border-radius: 50%; transform: translate(-50%,-50%) scale(.8); opacity: 0; }
.breathing-caption { margin: 0; display: flex; flex-direction: column; align-items: center; gap: 5px; }
.breathing-caption strong { color: white; font-size: 18px; letter-spacing: -.02em; }
.breathing-caption span { color: var(--mint); font-size: 12px; font-weight: 800; }
.record-breath { position: relative; z-index: 3; display: flex; align-items: center; gap: 11px; padding: 8px 12px 8px 8px; border: 1px solid rgba(255,255,255,.12); border-radius: 99px; background: rgba(255,255,255,.09); color: white; cursor: pointer; transition: .2s; }
.record-breath:not(:disabled):hover { background: rgba(255,255,255,.16); transform: translateY(-2px); }
.record-breath:active { transform: scale(.97); }
.record-breath:disabled { cursor: default; opacity: .38; }
.record-breath img { width: 48px; height: 48px; }
.record-breath span { font-weight: 750; font-size: 13px; }
.record-breath kbd { padding: 5px 7px; border: 1px solid rgba(255,255,255,.18); border-radius: 7px; color: rgba(255,255,255,.5); background: rgba(0,0,0,.16); font: inherit; font-size: 9px; }
.result-value { margin: 22px 0 14px; display: flex; align-items: center; gap: 12px; }
.result-value strong { min-width: 80px; color: var(--mint); font-size: 72px; line-height: 1; letter-spacing: -.07em; }
.result-value span { color: rgba(255,255,255,.58); font-size: 12px; font-weight: 700; line-height: 1.25; }
.lab-result p { min-height: 66px; margin: 0; color: rgba(255,255,255,.58); font-size: 14px; line-height: 1.55; }
.reset-link { align-self: flex-start; margin-top: 22px; padding: 0; border: 0; border-bottom: 1px solid rgba(255,255,255,.28); background: transparent; color: white; font-weight: 700; cursor: pointer; }
.lab-note { margin-top: 18px; color: rgba(255,255,255,.38); font-size: 12px; line-height: 1.5; }
@keyframes lung-left { 0%,100% { transform: scale(.86) translateX(7px); } 42% { transform: scale(1.06) translateX(-3px); } }
@keyframes lung-right { 0%,100% { transform: scale(.86) translateX(-7px); } 42% { transform: scale(1.06) translateX(3px); } }

.pro-section { position: relative; overflow: hidden; color: white; background: var(--teal-deep); }
.pro-section::before { content: ""; position: absolute; inset: 0; opacity: .09; background: url("assets/background.webp") center/cover; }
.pro-section .shell { position: relative; }
.pro-heading { display: grid; grid-template-columns: 1fr .7fr; align-items: end; gap: 90px; }
.pro-heading p:last-child { margin: 0; color: rgba(255,255,255,.62); font-size: 18px; line-height: 1.65; }
.feature-grid { margin-top: 64px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.feature { min-height: 180px; padding: 30px; display: flex; gap: 24px; background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.1); border-radius: 24px; backdrop-filter: blur(8px); }
.feature-wide { grid-column: span 2; min-height: 150px; }
.feature-symbol { flex: 0 0 58px; height: 58px; display: grid; place-items: center; border-radius: 18px; background: rgba(89,199,166,.13); color: var(--mint); font-weight: 850; font-size: 18px; }
.feature-symbol svg { width: 31px; height: 31px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.feature h3 { margin: 4px 0 10px; font-size: 22px; letter-spacing: -.02em; }
.feature h3 small { display: inline-block; margin-left: 8px; padding: 4px 7px; border: 1px solid rgba(255,255,255,.18); border-radius: 99px; color: rgba(255,255,255,.5); font-size: 9px; text-transform: uppercase; letter-spacing: .08em; vertical-align: 3px; }
.feature p { margin: 0; color: rgba(255,255,255,.56); line-height: 1.55; }
.trial-card { margin-top: 18px; padding: 42px; display: flex; justify-content: space-between; align-items: center; gap: 50px; border-radius: 26px; background: var(--mint); color: var(--ink); }
.trial-badge { display: inline-block; margin-bottom: 14px; padding: 6px 10px; border-radius: 99px; background: rgba(16,36,35,.12); font-size: 11px; font-weight: 850; text-transform: uppercase; letter-spacing: .08em; }
.trial-card h3 { margin: 0 0 8px; font-size: 30px; letter-spacing: -.03em; }
.trial-card p { margin: 0; max-width: 670px; line-height: 1.55; }
.button-light { flex: 0 0 auto; background: white; box-shadow: 0 12px 30px rgba(16,36,35,.12); }

.methodology { background: white; }
.methodology-layout { display: grid; grid-template-columns: .78fr 1.22fr; gap: 80px; align-items: start; }
.methodology-title { position: sticky; top: 120px; }
.methodology-title > p:last-child { max-width: 480px; color: var(--muted); font-size: 18px; line-height: 1.65; }
.method-cards { display: grid; gap: 15px; }
.method-card { padding: 32px; border: 1px solid var(--line); border-radius: 24px; background: var(--paper); }
.method-card.accuracy { background: var(--teal-deep); color: white; }
.method-card.warning { border-left: 5px solid var(--red); }
.method-label { display: block; margin-bottom: 22px; color: var(--teal); font-size: 11px; font-weight: 850; letter-spacing: .11em; text-transform: uppercase; }
.accuracy .method-label { color: var(--mint); }
.method-card p { margin: 0; font-size: 20px; line-height: 1.55; letter-spacing: -.01em; }
.method-card.accuracy p { font-size: 25px; }

.organizations { padding-top: 0; background: white; }
.organization-card { padding: 70px; display: grid; grid-template-columns: 1.1fr .7fr; align-items: end; gap: 90px; overflow: hidden; border-radius: 36px; background: var(--teal); color: white; position: relative; }
.organization-card::after { content: ""; position: absolute; width: 380px; height: 380px; border: 1px solid rgba(255,255,255,.18); border-radius: 50%; right: -180px; top: -180px; }
.organization-card .eyebrow { margin-bottom: 18px; }
.organization-card h2 { font-size: clamp(34px, 4.5vw, 58px); }
.organization-action { position: relative; z-index: 1; }
.organization-action p { color: rgba(255,255,255,.72); line-height: 1.6; }
.organization-action .button { margin-top: 12px; background: var(--teal-deep); color: white; }

.site-footer { padding: 76px 0 30px; color: white; background: #0b1a19; }
.footer-main { display: grid; grid-template-columns: 1fr 1fr; gap: 90px; }
.powered { display: block; margin-bottom: 9px; color: rgba(255,255,255,.4); font-size: 10px; font-weight: 800; text-transform: uppercase; letter-spacing: .14em; }
.footer-brand img { width: 225px; filter: brightness(0) invert(1); }
.footer-brand p { max-width: 360px; color: rgba(255,255,255,.45); line-height: 1.55; font-size: 14px; }
.footer-links { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.footer-links div { display: flex; flex-direction: column; align-items: flex-start; gap: 13px; }
.footer-links strong { margin-bottom: 6px; font-size: 13px; }
.footer-links a { color: rgba(255,255,255,.5); text-decoration: none; font-size: 14px; }
.footer-links a:hover { color: white; }
.footer-bottom { margin-top: 56px; padding-top: 22px; display: flex; justify-content: space-between; color: rgba(255,255,255,.32); border-top: 1px solid rgba(255,255,255,.08); font-size: 12px; }

[data-reveal] { opacity: 0; transform: translateY(22px); transition: opacity .7s ease, transform .7s ease; }
[data-reveal].revealed { opacity: 1; transform: none; }
@keyframes spin { to { transform: rotate(360deg); } }

@media (max-width: 900px) {
  .section { padding: 84px 0; }
  .hero-grid { grid-template-columns: 1fr; padding-top: 150px; padding-bottom: 90px; text-align: center; }
  .hero-copy { display: flex; flex-direction: column; align-items: center; }
  .hero h1 { font-size: clamp(50px, 10vw, 76px); }
  .device-stage { margin-top: 24px; }
  .quality-grid { grid-template-columns: 1fr; gap: 30px; }
  .quality-grid article, .quality-grid article:first-child { padding: 0 0 28px; border-left: 0; border-bottom: 1px solid rgba(255,255,255,.12); }
  .quality-grid article:last-child { border-bottom: 0; }
  .split-heading, .rhythm-heading, .pro-heading, .methodology-layout, .organization-card { grid-template-columns: 1fr; gap: 34px; }
  .steps { grid-template-columns: 1fr; }
  .step { min-height: 250px; }
  .lab-card { grid-template-columns: 1fr 1fr; }
  .breathing-stage { grid-column: 1 / -1; grid-row: 1; min-height: 410px; border-bottom: 1px solid rgba(255,255,255,.1); }
  .lab-controls, .lab-callout { min-height: 330px; }
  .lab-callout { border-left: 1px solid rgba(255,255,255,.1); }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-wide { grid-column: auto; }
  .methodology-title { position: static; }
  .trial-card { align-items: flex-start; flex-direction: column; }
  .organization-card { padding: 48px; }
}

@media (max-width: 720px) {
  .shell { width: min(100% - 30px, 1180px); }
  .site-header { padding-top: 12px; }
  .menu-toggle { display: block; }
  .site-nav { position: fixed; inset: 69px 15px auto; padding: 24px; flex-direction: column; align-items: stretch; gap: 0; background: rgba(16,36,35,.97); border: 1px solid rgba(255,255,255,.1); border-radius: 22px; box-shadow: var(--shadow); opacity: 0; transform: translateY(-12px); pointer-events: none; transition: .25s; }
  .site-nav.open { opacity: 1; transform: none; pointer-events: auto; }
  .site-nav a { padding: 14px; }
  .site-nav .nav-cta { margin-top: 10px; text-align: center; }
  .menu-toggle[aria-expanded="true"] span:not(.sr-only):nth-child(2) { transform: translateY(4px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] span:not(.sr-only):nth-child(3) { transform: translateY(-4px) rotate(-45deg); }
  .hero-grid { padding-top: 125px; gap: 25px; }
  .hero h1 { font-size: clamp(44px, 13.2vw, 64px); }
  .hero-lede { font-size: 17px; }
  .hero-actions { flex-direction: column; gap: 20px; }
  .phone { width: 300px; }
  .orbit-one { width: 400px; height: 400px; }
  .orbit-two { width: 340px; height: 340px; }
  .split-heading h2, .pro-heading h2, .methodology-title h2 { font-size: 42px; }
  .steps { margin-top: 45px; }
  .rhythm-heading h2 { font-size: 42px; }
  .lab-card { grid-template-columns: 1fr; margin-top: 42px; }
  .breathing-stage { grid-column: auto; min-height: 390px; }
  .lab-controls, .lab-callout { min-height: auto; padding: 32px 25px; border: 0; }
  .lab-controls { border-bottom: 1px solid rgba(255,255,255,.1); }
  .lab-callout { border-top: 1px solid rgba(255,255,255,.1); }
  .feature { padding: 24px; flex-direction: column; gap: 16px; }
  .trial-card { padding: 28px; }
  .trial-card .button { width: 100%; }
  .method-card { padding: 25px; }
  .method-card p, .method-card.accuracy p { font-size: 18px; }
  .organization-card { width: min(100% - 30px, 1180px); padding: 34px 26px; border-radius: 28px; }
  .organization-card h2 { font-size: 36px; }
  .organization-action .button { width: 100%; }
  .footer-main { grid-template-columns: 1fr; gap: 50px; }
  .footer-links { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  [data-reveal] { opacity: 1; transform: none; }
}