:root {
  --color-background: #f7f9f5;
  --color-surface: #ffffff;
  --color-surface-alt: #edf5e8;
  --color-text: #1f2a1f;
  --color-muted: #5d6b5d;
  --color-primary: #2f7d32;
  --color-primary-dark: #215924;
  --color-secondary: #113b5f;
  --color-border: #d7e2d2;
  --color-warning: #f4a62a;
  --shadow-soft: 0 18px 45px rgba(31, 42, 31, 0.12);
  --shadow-card: 0 10px 28px rgba(31, 42, 31, 0.10);
  --radius-large: 28px;
  --radius-medium: 18px;
  --radius-small: 12px;
  --max-width: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--color-text);
  background: var(--color-background);
  line-height: 1.6;
}

a {
  color: inherit;
}

img {
  max-width: 100%;
  height: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(18px, 4vw, 48px);
  background: rgba(247, 249, 245, 0.92);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-weight: 800;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 58px;
  min-height: 38px;
  padding: 6px 10px;
  color: #ffffff;
  background: var(--color-primary);
  border-radius: 999px;
  letter-spacing: 0.04em;
}

.brand-text {
  font-size: 0.96rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 22px;
  font-size: 0.95rem;
  font-weight: 700;
}

.site-nav a {
  color: var(--color-muted);
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a:focus {
  color: var(--color-primary-dark);
}

.section {
  width: min(var(--max-width), calc(100% - 36px));
  margin: 0 auto;
  padding: 72px 0;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  align-items: center;
  gap: 48px;
  min-height: calc(100vh - 82px);
  padding-top: 60px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--color-primary-dark);
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin-top: 0;
  line-height: 1.08;
}

h1 {
  max-width: 820px;
  margin-bottom: 24px;
  font-size: clamp(3rem, 7vw, 5.8rem);
  letter-spacing: -0.055em;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(2rem, 4vw, 3.4rem);
  letter-spacing: -0.04em;
}

h3 {
  margin-bottom: 12px;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
}

p {
  margin-top: 0;
}

.hero-subtitle {
  max-width: 760px;
  margin-bottom: 18px;
  color: var(--color-secondary);
  font-size: clamp(1.35rem, 2.5vw, 2rem);
  font-weight: 800;
  line-height: 1.25;
}

.hero-copy {
  max-width: 720px;
  color: var(--color-muted);
  font-size: 1.15rem;
}

.hero-note,
.small-note {
  max-width: 700px;
  margin-top: 18px;
  color: var(--color-muted);
  font-size: 0.95rem;
}

.hero-actions,
.app-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

/* --- App launch / download block -------------------------- */
.app-notify {
  margin-top: 28px;
}

.app-notify-lede {
  margin: 0 0 14px;
  color: var(--color-muted);
  font-size: 0.98rem;
  line-height: 1.5;
}

.app-notify-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.app-notify-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.app-notify-row input[type="text"],
.app-notify-row input[type="email"] {
  flex: 1 1 0;
  min-width: 0;
  padding: 12px 14px;
  border: 1.5px solid var(--color-border, rgba(0,0,0,0.15));
  border-radius: 8px;
  font-size: 0.95rem;
  background: #fff;
  color: var(--color-ink, #111);
}

.app-notify-row input:focus {
  outline: none;
  border-color: var(--color-accent, #00aece);
  box-shadow: 0 0 0 3px rgba(0,174,206,0.18);
}

.app-notify-row .button {
  flex: 0 0 auto;
}

.app-notify-honey {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.app-notify-error {
  margin: 4px 0 0;
  padding: 8px 12px;
  border-radius: 8px;
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #b91c1c;
  font-size: 0.88rem;
}

.app-notify-success {
  margin: 4px 0 0;
  padding: 10px 12px;
  border-radius: 8px;
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
  color: #065f46;
  font-size: 0.92rem;
  font-weight: 600;
}

@media (max-width: 600px) {
  .app-notify-row {
    flex-direction: column;
    gap: 8px;
  }
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 14px 22px;
  border-radius: 999px;
  font-weight: 800;
  line-height: 1.2;
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.button:hover,
.button:focus {
  transform: translateY(-2px);
}

.button-primary {
  color: #ffffff;
  background: var(--color-primary);
  box-shadow: 0 12px 26px rgba(47, 125, 50, 0.25);
}

.button-primary:hover,
.button-primary:focus {
  background: var(--color-primary-dark);
}

.button-secondary {
  color: var(--color-primary-dark);
  background: #ffffff;
  border: 1px solid var(--color-border);
  box-shadow: 0 8px 22px rgba(31, 42, 31, 0.08);
}

.button-large {
  width: 100%;
  margin-top: 20px;
}

.hero-card {
  padding: 26px;
  background:
    radial-gradient(circle at top right, rgba(47, 125, 50, 0.22), transparent 36%),
    linear-gradient(145deg, #ffffff, #edf5e8);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  box-shadow: var(--shadow-soft);
}

.status-card {
  padding: 24px;
  margin-bottom: 18px;
  color: #ffffff;
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-secondary));
  border-radius: 24px;
}

.status-label {
  margin-bottom: 8px;
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.82;
}

.status-value {
  margin-bottom: 8px;
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: -0.04em;
}

.status-detail {
  margin-bottom: 0;
  opacity: 0.9;
}

.hero-metric-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.metric {
  min-height: 132px;
  padding: 18px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(215, 226, 210, 0.9);
  border-radius: 20px;
}

.metric-number {
  display: block;
  margin-bottom: 8px;
  color: var(--color-primary-dark);
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: -0.05em;
}

.metric-label {
  display: block;
  color: var(--color-muted);
  font-weight: 800;
  line-height: 1.25;
}

.offer-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  padding-top: 0;
}

.offer-strip-item {
  display: flex;
  gap: 16px;
  padding: 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  box-shadow: var(--shadow-card);
}

.offer-strip-item h2 {
  margin-bottom: 8px;
  font-size: 1.3rem;
}

.offer-strip-item p {
  margin-bottom: 0;
  color: var(--color-muted);
}

.offer-icon {
  display: inline-flex;
  flex: 0 0 42px;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  color: #ffffff;
  background: var(--color-primary);
  border-radius: 999px;
  font-weight: 900;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 42px;
  align-items: start;
}

.split > div > p:not(.eyebrow),
.app-copy > p,
.article-card > p,
.video-section > div > p,
.partner-card > p,
.final-cta > p {
  color: var(--color-muted);
  font-size: 1.08rem;
}

.steps {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.step-card,
.video-card,
.partner-card,
.article-card,
.membership-card,
.membership-benefits {
  padding: 28px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  box-shadow: var(--shadow-card);
}

.step-number {
  display: block;
  margin-bottom: 16px;
  color: var(--color-primary);
  font-size: 0.9rem;
  font-weight: 900;
  letter-spacing: 0.14em;
}

.step-card p,
.video-card p,
.membership-benefits p {
  margin-bottom: 0;
  color: var(--color-muted);
}

.app-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(310px, 430px);
  gap: 54px;
  align-items: center;
}

.check-list {
  padding: 0;
  margin: 24px 0 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 30px;
  margin-bottom: 12px;
  color: var(--color-muted);
  font-weight: 700;
}

.check-list li::before {
  position: absolute;
  left: 0;
  top: 0;
  color: var(--color-primary);
  content: "✓";
  font-weight: 900;
}

.phone-preview {
  display: flex;
  justify-content: center;
}

.phone-frame {
  width: min(100%, 340px);
  padding: 14px;
  background: #202820;
  border-radius: 38px;
  box-shadow: var(--shadow-soft);
}

.phone-screen {
  min-height: 620px;
  padding: 24px;
  color: #ffffff;
  background:
    radial-gradient(circle at center, rgba(112, 211, 91, 0.22), transparent 34%),
    linear-gradient(180deg, #153b2a, #0d1822);
  border-radius: 28px;
  text-align: center;
}

.phone-title {
  margin-bottom: 42px;
  font-size: 1.05rem;
  font-weight: 900;
}

.zone-ring {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 210px;
  height: 210px;
  margin: 0 auto 28px;
  border: 16px solid #58c95b;
  border-radius: 999px;
  box-shadow: 0 0 34px rgba(88, 201, 91, 0.35);
}

.zone-label {
  font-size: 2.4rem;
  font-weight: 900;
  letter-spacing: -0.05em;
}

.zone-detail {
  font-size: 1rem;
  font-weight: 800;
  opacity: 0.75;
}

.heart-rate {
  margin-bottom: 8px;
  font-size: 3.2rem;
  font-weight: 900;
  letter-spacing: -0.06em;
}

.ride-guidance {
  max-width: 240px;
  margin: 0 auto 42px;
  color: rgba(255, 255, 255, 0.78);
  font-weight: 700;
}

.zone-bars {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  margin-top: 36px;
}

.bar {
  display: block;
  height: 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.25);
}

.bar.active {
  background: #58c95b;
}

.membership-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.7fr);
  gap: 28px;
  align-items: stretch;
}

.membership-card {
  background:
    radial-gradient(circle at top right, rgba(244, 166, 42, 0.18), transparent 34%),
    #ffffff;
}

.price-box {
  padding: 24px;
  margin-top: 24px;
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: 20px;
}

.price-label {
  margin-bottom: 6px;
  color: var(--color-muted);
  font-weight: 800;
}

.price {
  margin-bottom: 6px;
  color: var(--color-primary-dark);
  font-size: 3rem;
  font-weight: 900;
  letter-spacing: -0.06em;
}

.price-note {
  margin-bottom: 0;
  color: var(--color-muted);
}

.article-section,
.partner-section,
.final-cta {
  text-align: center;
}

.article-card,
.partner-card,
.final-cta {
  max-width: 860px;
  margin: 0 auto;
}

.video-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.75fr);
  gap: 28px;
  align-items: center;
}

.partner-card {
  background:
    radial-gradient(circle at top left, rgba(17, 59, 95, 0.12), transparent 36%),
    #ffffff;
}

.faq-section {
  max-width: 940px;
}

.faq-list {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}

details {
  padding: 22px 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  box-shadow: 0 7px 18px rgba(31, 42, 31, 0.06);
}

summary {
  cursor: pointer;
  font-size: 1.08rem;
  font-weight: 900;
}

details p {
  margin: 16px 0 0;
  color: var(--color-muted);
}

.final-cta {
  padding: 72px 28px;
  margin-bottom: 72px;
  color: #ffffff;
  background:
    radial-gradient(circle at top right, rgba(244, 166, 42, 0.26), transparent 34%),
    linear-gradient(135deg, var(--color-primary-dark), var(--color-secondary));
  border-radius: var(--radius-large);
  box-shadow: var(--shadow-soft);
}

.final-cta .eyebrow,
.final-cta p {
  color: rgba(255, 255, 255, 0.84);
}

.final-cta .button-secondary {
  color: var(--color-text);
}

.site-footer {
  padding: 36px 18px;
  color: var(--color-muted);
  background: #ffffff;
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.site-footer p {
  max-width: 780px;
  margin: 0 auto 10px;
  font-size: 0.92rem;
}

.site-footer p:last-child {
  margin-bottom: 0;
}

@media (max-width: 980px) {
  .hero,
  .split,
  .app-section,
  .membership-section,
  .video-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .offer-strip {
    grid-template-columns: 1fr;
  }

  .phone-frame {
    max-width: 330px;
  }
}

@media (max-width: 720px) {
  .site-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
  }

  .site-nav {
    flex-wrap: wrap;
    gap: 14px;
  }

  .section {
    width: min(100% - 28px, var(--max-width));
    padding: 52px 0;
  }

  .hero {
    padding-top: 42px;
  }

  .hero-actions,
  .app-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .hero-metric-grid,
  .steps {
    grid-template-columns: 1fr;
  }

  .phone-screen {
    min-height: 560px;
  }

  .zone-ring {
    width: 190px;
    height: 190px;
  }

  .heart-rate {
    font-size: 2.8rem;
  }
}