:root {
  color-scheme: dark;
  --bg: #101416;
  --surface: #171e20;
  --surface-strong: #1c282a;
  --text: #e6f0f0;
  --muted: #a8b9bb;
  --primary: #aeeef5;
  --gold: #e2c469;
  --line: #314347;
  --shell: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 8% 0%, #1a373d 0, transparent 30%),
    radial-gradient(circle at 96% 30%, #292619 0, transparent 28%),
    var(--bg);
  color: var(--text);
  font: 16px/1.7 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a { color: var(--primary); }
.shell { width: min(var(--shell), calc(100% - 64px)); margin: 0 auto; }
.site-nav { display: flex; align-items: center; justify-content: space-between; padding: 26px 0; }
.brand { color: var(--text); font-size: 12px; font-weight: 700; letter-spacing: .18em; text-decoration: none; }
.brand-mark { display: inline-grid; place-items: center; width: 24px; height: 24px; margin-right: 8px; border: 1px solid var(--primary); border-radius: 50%; color: var(--primary); }
.nav-links, .footer-links { display: flex; gap: 24px; align-items: center; }
.nav-links a, .footer-links a { color: var(--muted); font-size: 14px; text-decoration: none; }
.nav-links a:hover, .footer-links a:hover, .text-link:hover { color: var(--primary); }

.hero { padding-top: clamp(64px, 10vw, 140px); padding-bottom: clamp(92px, 13vw, 180px); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(360px, .95fr); gap: clamp(48px, 9vw, 140px); align-items: center; }
.eyebrow { margin: 0 0 18px; color: var(--primary); font-size: 11px; letter-spacing: .24em; font-weight: 700; }
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 24px; font-size: clamp(52px, 7.5vw, 94px); line-height: .98; letter-spacing: -.065em; font-weight: 300; }
h1 span, h2 span { color: var(--primary); }
.lede { max-width: 580px; margin-bottom: 0; color: var(--muted); font-size: clamp(18px, 2vw, 22px); line-height: 1.55; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 11px 19px; border-radius: 999px; font-weight: 700; text-decoration: none; transition: transform .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button.primary { background: var(--primary); color: #102023; }
.button.primary:hover { background: #d2f9fc; }
.button.secondary { border: 1px solid var(--line); background: var(--surface); color: var(--text); }
.availability-note { max-width: 580px; margin: 18px 0 0; color: var(--gold); font-size: 14px; }
.region-links { margin: 8px 0 0; color: var(--muted); font-size: 13px; }
.region-links a { color: var(--primary); }
.trust-line { display: flex; flex-wrap: wrap; gap: 8px 18px; margin: 26px 0 0; color: var(--muted); font-size: 13px; }
.trust-line span::before { content: "·"; margin-right: 8px; color: var(--gold); }

.breath-card { position: relative; min-height: 530px; overflow: hidden; padding: 24px; border: 1px solid #315157; border-radius: 30px; background: linear-gradient(145deg, #162326, #111719 72%); box-shadow: 0 30px 90px rgba(0,0,0,.26); }
.breath-card::before { position: absolute; inset: 15% -25% auto; height: 300px; border-radius: 50%; background: rgba(174,238,245,.06); content: ""; filter: blur(12px); }
.breath-card-top, .breath-card-bottom { position: relative; display: flex; justify-content: space-between; color: var(--muted); font-size: 11px; letter-spacing: .16em; }
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--gold); box-shadow: 0 0 0 6px rgba(226,196,105,.1); }
.breath-stage { position: relative; display: grid; place-items: center; min-height: 410px; }
.orbit { position: absolute; border: 1px solid rgba(174,238,245,.2); border-radius: 50%; animation: breathe 6s ease-in-out infinite; }
.orbit-outer { width: 310px; height: 310px; }
.orbit-middle { width: 240px; height: 240px; animation-delay: -1.4s; border-color: rgba(226,196,105,.28); }
.breath-orb { display: grid; place-items: center; width: 158px; height: 158px; border: 1px solid rgba(174,238,245,.65); border-radius: 50%; background: radial-gradient(circle at 35% 30%, #b9f5f8, #76cbd3 60%, #28616a); color: #102023; box-shadow: 0 0 70px rgba(174,238,245,.16); animation: breathe 6s ease-in-out infinite; }
.breath-orb span { margin-top: 8px; font-size: 13px; letter-spacing: .12em; text-transform: uppercase; }
.breath-orb strong { margin-top: -12px; font-size: 54px; line-height: 1; font-weight: 300; }
.breath-card-bottom { letter-spacing: .04em; }

.section { padding: 56px 0 130px; }
.section-heading { display: flex; justify-content: space-between; gap: 32px; align-items: end; margin-bottom: 42px; }
h2 { margin-bottom: 0; font-size: clamp(38px, 5vw, 64px); line-height: 1.03; letter-spacing: -.055em; font-weight: 300; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.feature-card { min-height: 250px; padding: 28px; border: 1px solid var(--line); border-radius: 18px; background: rgba(23,30,32,.72); }
.feature-number { color: var(--gold); font-size: 12px; letter-spacing: .15em; }
.feature-card h3 { margin: 54px 0 10px; font-size: 21px; font-weight: 500; }
.feature-card p, .rhythm-item p, .privacy-copy p { margin-bottom: 0; color: var(--muted); }

.rhythm-section { display: grid; grid-template-columns: .9fr 1.1fr; gap: 12%; align-items: start; padding: 34px 0 136px; }
.rhythm-list { border-top: 1px solid var(--line); }
.rhythm-item { display: flex; gap: 20px; align-items: center; padding: 22px 0; border-bottom: 1px solid var(--line); }
.rhythm-item strong { font-size: 20px; font-weight: 500; }
.rhythm-item p { margin-top: 2px; font-size: 14px; }
.rhythm-icon { display: grid; place-items: center; width: 42px; height: 42px; flex: 0 0 42px; border: 1px solid var(--line); border-radius: 50%; color: var(--primary); font-size: 24px; }
.rhythm-icon.focus { color: var(--gold); }
.rhythm-icon.sleep { color: #b9a5e9; }

.learn-section { padding: 12px 0 136px; }
.learn-intro { max-width: 660px; margin: -4px 0 34px; color: var(--muted); font-size: 18px; }
.learn-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.learn-card { padding: 24px; border-left: 2px solid var(--gold); background: rgba(23,30,32,.54); }
.learn-card h3 { margin-bottom: 8px; font-size: 19px; font-weight: 500; }
.learn-card p { margin-bottom: 0; color: var(--muted); font-size: 14px; }

.privacy-band { display: grid; grid-template-columns: 1fr 1fr; gap: 12%; align-items: center; padding: 74px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.privacy-copy { max-width: 470px; }
.text-link { display: inline-flex; gap: 8px; margin-top: 22px; color: var(--primary); font-weight: 700; text-decoration: none; }
.closing-cta { padding: 140px 0 150px; text-align: center; }
.closing-cta .eyebrow { margin-bottom: 22px; }
.closing-cta h2 { margin-bottom: 32px; }
.site-footer { display: flex; justify-content: space-between; gap: 20px; padding: 24px 0 34px; color: var(--muted); font-size: 13px; }

@keyframes breathe { 0%, 100% { transform: scale(.88); opacity: .78; } 50% { transform: scale(1.08); opacity: 1; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .button, .orbit, .breath-orb { animation: none; transition: none; } }
@media (max-width: 760px) {
  .shell { width: min(var(--shell), calc(100% - 40px)); }
  .nav-links { gap: 14px; }
  .nav-links a:first-child { display: none; }
  .hero { padding-top: 70px; }
  .hero-grid, .rhythm-section, .privacy-band { grid-template-columns: 1fr; gap: 52px; }
  .breath-card { min-height: 430px; }
  .breath-stage { min-height: 320px; }
  .orbit-outer { width: 250px; height: 250px; }
  .orbit-middle { width: 194px; height: 194px; }
  .breath-orb { width: 130px; height: 130px; }
  .breath-orb strong { font-size: 44px; }
  .section-heading { display: block; }
  .section-heading h2 { margin-top: 28px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card { min-height: 0; }
  .feature-card h3 { margin-top: 32px; }
  .learn-grid { grid-template-columns: 1fr; }
  .closing-cta { padding: 104px 0 120px; }
  .site-footer { display: block; }
  .site-footer .footer-links { margin-top: 12px; }
}