:root {
  --airy-primary: #2563eb;
  --airy-primary-strong: #1d4ed8;
  --airy-secondary: #8b5cf6;
  --airy-success: #10b981;
  --airy-warning: #f59e0b;
  --airy-bg: #f3f4f6;
  --airy-surface: #ffffff;
  --airy-surface-muted: #f8fafc;
  --airy-text: #111827;
  --airy-text-muted: #4b5563;
  --airy-border: #e5e7eb;
  --airy-header-bg: rgba(243, 244, 246, 0.92);
  --airy-shadow: 0 18px 45px rgba(15, 23, 42, 0.15);
  --airy-shadow-soft: 0 8px 20px rgba(15, 23, 42, 0.08);
  --section-width: 1160px;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--airy-bg);
  color: var(--airy-text);
  font-family:
    Inter,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    'Segoe UI',
    sans-serif;
  line-height: 1.5;
}

body.feedback-modal-open {
  overflow: hidden;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 58px;
  padding: 9px 32px;
  border-bottom: 1px solid rgba(229, 231, 235, 0.8);
  background: var(--airy-header-bg);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: 132px;
}

.brand img {
  height: auto;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--airy-text-muted);
  font-size: 15px;
  font-weight: 600;
}

.site-nav a:hover,
.text-link:hover {
  color: var(--airy-primary-strong);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border-radius: 8px;
  font-weight: 700;
  transition:
    transform 160ms ease,
    box-shadow 160ms ease,
    background 160ms ease;
}

.button {
  padding: 0 20px;
  border: 1px solid transparent;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  min-height: 52px;
  padding: 0 28px;
  background: var(--airy-primary);
  color: #ffffff;
  box-shadow: var(--airy-shadow-soft);
}

.button-primary:hover {
  background: var(--airy-primary-strong);
}

.button-secondary {
  background: rgba(255, 255, 255, 0.86);
  border-color: rgba(255, 255, 255, 0.45);
  color: var(--airy-text);
}

.section-band {
  width: 100%;
}

.section-inner {
  width: min(100% - 40px, var(--section-width));
  margin: 0 auto;
}

.hero {
  position: relative;
  overflow: hidden;
  color: var(--airy-text);
  background-color: var(--airy-bg);
  background-image: linear-gradient(
    90deg,
    rgba(243, 244, 246, 0.98),
    rgba(243, 244, 246, 0.92) 42%,
    rgba(243, 244, 246, 0.58)
  );
}

.hero::after {
  position: absolute;
  inset: 0;
  content: '';
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.72), rgba(243, 244, 246, 0.2));
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  gap: 42px;
  align-items: center;
  min-height: min(760px, calc(100vh - 58px));
  padding: 76px 0 64px;
}

.hero-copy {
  max-width: 710px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--airy-primary);
  font-size: 13px;
  font-weight: 800;
  line-height: 1.2;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: var(--airy-primary);
}

h1,
h2,
h3 {
  margin: 0;
  font-family: Montserrat, Inter, system-ui, sans-serif;
  line-height: 1.05;
  letter-spacing: 0;
}

h1 {
  font-size: 72px;
}

.hero-title-accent {
  color: #def851;
}

h2 {
  max-width: 820px;
  font-size: 42px;
}

h3 {
  font-size: 20px;
}

.hero-lede {
  max-width: 660px;
  margin: 22px 0 0;
  color: var(--airy-text-muted);
  font-size: 21px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  max-width: 720px;
  margin: 42px 0 0;
}

.hero-stats div {
  min-width: 0;
  padding: 16px;
  border: 1px solid var(--airy-border);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: var(--airy-shadow-soft);
}

.hero-stats dt {
  font-size: 14px;
  font-weight: 800;
}

.hero-stats dd {
  margin: 5px 0 0;
  color: var(--airy-text-muted);
  font-size: 14px;
}

.hero-preview {
  position: relative;
  justify-self: center;
  min-width: 0;
  width: min(100%, 640px);
  overflow: visible;
}

.hero-preview picture {
  display: block;
  aspect-ratio: 1770 / 2095;
}

.hero-preview img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: top left;
}

.features-band,
.routes-band,
.workouts-band,
.compatibility-band,
.comparison-band,
.faq-band {
  padding: 92px 0;
}

.features-band,
.faq-band {
  background: var(--airy-bg);
}

.routes-band,
.compatibility-band,
.comparison-band {
  background: var(--airy-surface);
}

.workouts-band {
  background: #eef2ff;
}

.section-heading {
  max-width: 820px;
  margin-bottom: 36px;
}

.section-heading p,
.split-copy p,
.compatibility-copy p,
.final-cta p {
  color: var(--airy-text-muted);
  font-size: 17px;
}

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

.feature-card,
.workout-list div,
.faq-list details {
  border: 1px solid var(--airy-border);
  border-radius: 8px;
  background: var(--airy-surface);
  box-shadow: var(--airy-shadow-soft);
}

.feature-card {
  position: relative;
  min-height: 178px;
  padding: 24px 24px 24px 104px;
  overflow: hidden;
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: absolute;
  inset: 0 auto 0 0;
  width: 74px;
  height: 100%;
  margin: 0;
  border-right: 1px solid rgba(37, 99, 235, 0.16);
  border-radius: 7px 0 0 7px;
  background: #dbeafe;
  color: var(--airy-primary-strong);
  font-size: 34px;
  font-weight: 800;
}

.feature-card:nth-child(2) .feature-icon {
  background: #d1fae5;
  border-right-color: rgba(4, 120, 87, 0.16);
  color: #047857;
}

.feature-card:nth-child(3) .feature-icon {
  background: #fef3c7;
  border-right-color: rgba(180, 83, 9, 0.18);
  color: #b45309;
}

.feature-card p {
  color: var(--airy-text-muted);
}

.split-section,
.workout-layout,
.compatibility-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: 48px;
  align-items: center;
}

.check-list {
  display: grid;
  gap: 12px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 28px;
  color: var(--airy-text);
  font-weight: 600;
}

.check-list li::before {
  position: absolute;
  left: 0;
  top: 2px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--airy-success);
  color: #ffffff;
  content: '✓';
  font-size: 12px;
  font-weight: 800;
  line-height: 18px;
  text-align: center;
}

.section-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.app-preview-stack {
  overflow: hidden;
  border: 1px solid var(--airy-border);
  border-radius: 8px;
  background: var(--airy-surface);
  box-shadow: var(--airy-shadow);
}

.app-preview-stack picture {
  display: block;
}

.app-preview-stack img {
  width: 100%;
  height: auto;
  object-fit: contain;
  object-position: top left;
}

.preview-caption {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px;
  border-top: 1px solid var(--airy-border);
  background: var(--airy-surface);
}

.preview-caption .material-icons-round {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  border-radius: 8px;
  background: #dbeafe;
  color: var(--airy-primary-strong);
  font-size: 24px;
}

.preview-caption p {
  margin: 4px 0 0;
  color: var(--airy-text-muted);
  font-size: 14px;
}

.product-shot {
  overflow: hidden;
  border: 1px solid rgba(148, 163, 184, 0.45);
  border-radius: 8px;
  background: var(--airy-surface);
  box-shadow: var(--airy-shadow);
}

.product-shot picture {
  display: block;
}

.product-shot img {
  width: 100%;
  max-height: 640px;
  background: var(--airy-surface);
  object-fit: contain;
  object-position: top center;
}

.workout-list {
  display: grid;
  gap: 12px;
  margin-top: 26px;
}

.workout-list div {
  display: grid;
  gap: 4px;
  padding: 16px;
}

.workout-list strong {
  font-size: 16px;
}

.workout-list span {
  color: var(--airy-text-muted);
}

.compatibility-grid {
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
}

.text-link {
  display: inline-flex;
  margin-top: 12px;
  color: var(--airy-primary);
  font-weight: 800;
}

.compatibility-shot {
  overflow: hidden;
  margin-top: 24px;
  border: 1px solid var(--airy-border);
  border-radius: 8px;
  background: var(--airy-surface);
  box-shadow: var(--airy-shadow-soft);
}

.compatibility-shot img {
  width: 100%;
  aspect-ratio: 1.58;
  object-fit: cover;
  object-position: top left;
}

.comparison-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--airy-border);
  border-radius: 8px;
  background: var(--airy-surface);
  box-shadow: var(--airy-shadow-soft);
}

.comparison-table {
  width: 100%;
  min-width: 980px;
  border-collapse: collapse;
  color: var(--airy-text);
  font-size: 14px;
}

.comparison-table caption {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.comparison-table th,
.comparison-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--airy-border);
  text-align: left;
  vertical-align: top;
}

.comparison-table thead th {
  background: var(--airy-surface-muted);
  color: var(--airy-text);
  font-size: 13px;
  font-weight: 800;
  white-space: nowrap;
}

.comparison-table tbody th {
  min-width: 132px;
  font-weight: 800;
}

.comparison-table tbody tr:last-child th,
.comparison-table tbody tr:last-child td {
  border-bottom: 0;
}

.comparison-table a {
  color: var(--airy-primary);
  font-weight: 800;
}

.comparison-table a:hover {
  color: var(--airy-primary-strong);
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-list details {
  padding: 0 20px;
}

.faq-list summary {
  cursor: pointer;
  padding: 20px 0;
  font-size: 18px;
  font-weight: 800;
}

.faq-list p {
  margin: 0;
  padding: 0 0 20px;
  color: var(--airy-text-muted);
}

.final-cta {
  padding: 82px 0;
  background: #111827;
  color: #ffffff;
  text-align: center;
}

.final-cta .section-inner {
  max-width: 760px;
}

.final-cta h2 {
  margin: 0 auto;
}

.final-cta p {
  color: rgba(255, 255, 255, 0.72);
}

.final-cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 26px;
}

.site-footer {
  border-top: 1px solid var(--airy-border);
  background: var(--airy-surface);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 0;
  color: var(--airy-text-muted);
  font-size: 14px;
}

.footer-inner p {
  margin: 0;
}

.footer-inner img {
  width: 120px;
  height: auto;
  flex: 0 0 auto;
}

.feedback-modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(17, 24, 39, 0.52);
}

.feedback-modal-backdrop.is-hidden {
  display: none;
}

.feedback-modal {
  position: relative;
  width: min(100%, 560px);
  border: 1px solid var(--airy-border);
  border-radius: 8px;
  background: var(--airy-surface);
  box-shadow: var(--airy-shadow);
  padding: 24px;
}

.feedback-modal h2 {
  font-size: 28px;
}

.feedback-modal p {
  color: var(--airy-text-muted);
}

.feedback-modal__close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 36px;
  height: 36px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--airy-text-muted);
  cursor: pointer;
}

.feedback-form {
  display: grid;
  gap: 16px;
  margin-top: 14px;
}

.feedback-form__group {
  display: grid;
  gap: 8px;
  margin: 0;
  border: 0;
  padding: 0;
}

.feedback-form__group legend,
.feedback-form__group > span {
  color: var(--airy-text);
  font-size: 15px;
  font-weight: 700;
}

.feedback-form__group p {
  margin: 0;
  font-size: 14px;
}

.feedback-sentiment {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.feedback-sentiment__option {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  border: 1px solid var(--airy-border);
  border-radius: 8px;
  background: var(--airy-surface-muted);
  color: var(--airy-text);
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
}

.feedback-sentiment__option.is-selected {
  border-color: var(--airy-primary);
  background: rgba(37, 99, 235, 0.08);
  color: var(--airy-primary-strong);
}

.feedback-form textarea {
  width: 100%;
  min-height: 120px;
  border: 1px solid var(--airy-border);
  border-radius: 8px;
  background: #ffffff;
  color: var(--airy-text);
  font: inherit;
  line-height: 1.45;
  padding: 12px;
  resize: vertical;
}

.feedback-form textarea:focus-visible,
.feedback-sentiment__option:focus-visible,
.feedback-modal__close:focus-visible {
  outline: 2px solid var(--airy-primary);
  outline-offset: 2px;
}

.feedback-form__error,
.feedback-form__success {
  margin: 0;
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 14px;
}

.feedback-form__error {
  border: 1px solid #fecaca;
  background: #fef2f2;
  color: #b91c1c;
}

.feedback-form__success {
  border: 1px solid #bbf7d0;
  background: #f0fdf4;
  color: #15803d;
}

.feedback-form__error.is-hidden,
.feedback-form__success.is-hidden {
  display: none;
}

.feedback-form__actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

.feedback-form__actions .button[disabled] {
  cursor: not-allowed;
  opacity: 0.45;
  transform: none;
}

@media (max-width: 900px) {
  .site-header {
    padding: 8px 20px;
  }

  .site-nav {
    display: none;
  }

  h1 {
    font-size: 56px;
  }

  h2 {
    font-size: 34px;
  }

  .hero-lede {
    font-size: 19px;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    min-height: auto;
    padding: 58px 0 54px;
  }

  .hero-preview {
    max-width: 520px;
  }

  .feature-grid,
  .split-section,
  .workout-layout,
  .compatibility-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .section-inner {
    width: min(100% - 28px, var(--section-width));
  }

  .site-header {
    min-height: 56px;
  }

  .brand img {
    width: 132px;
  }

  .hero-inner {
    padding: 34px 0 46px;
  }

  h1 {
    font-size: 44px;
  }

  h2 {
    font-size: 29px;
  }

  .hero-lede,
  .section-heading p,
  .split-copy p,
  .compatibility-copy p,
  .final-cta p {
    font-size: 16px;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .hero-stats {
    grid-template-columns: 1fr;
  }

  .hero-preview picture {
    aspect-ratio: 1770 / 2095;
  }

  .features-band,
  .routes-band,
  .workouts-band,
  .compatibility-band,
  .comparison-band,
  .faq-band {
    padding: 64px 0;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .feedback-sentiment {
    grid-template-columns: 1fr;
  }

  .feedback-form__actions {
    flex-direction: column-reverse;
  }

  .feedback-form__actions .button {
    width: 100%;
  }
}