:root {
  color-scheme: light;
  --ink: #18283e;
  --muted: #526279;
  --blue: #17467d;
  --line: #dce4ed;
  --canvas: #f7f9fc;
  --soft: #eaf0f8;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  overflow-wrap: break-word;
}
a { color: var(--blue); text-underline-offset: .2em; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible { outline: 3px solid var(--blue); outline-offset: 5px; border-radius: 2px; }
.container { width: min(100% - 48px, 920px); margin-inline: auto; }
.site-header { padding-block: 30px; }
.header-row { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 12px; color: var(--ink); font-weight: 750; font-size: 20px; letter-spacing: -.04em; text-decoration: none; }
.brand-icon { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 12px; background: var(--blue); color: #fff; }
.brand-icon svg { width: 26px; height: 26px; }
.tagline { margin: 0; color: var(--muted); font-size: 14px; }
.hero { padding-block: 58px 64px; }
.eyebrow { margin: 0 0 20px; color: var(--blue); font-size: 12px; font-weight: 750; letter-spacing: .13em; text-transform: uppercase; }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 840px; margin-bottom: 26px; font-size: clamp(36px, 5.8vw, 58px); line-height: 1.12; letter-spacing: -.055em; font-weight: 750; }
h1 span { color: var(--blue); }
.hero-description { max-width: 670px; margin-bottom: 32px; color: var(--muted); font-size: 20px; line-height: 1.6; }
.store-badge { display: inline-flex; align-items: center; gap: 12px; padding: 12px 20px; border: 1px solid #c3d0e2; border-radius: 12px; background: #fff; color: var(--blue); font-size: 17px; font-weight: 650; }
.store-badge small { display: block; font-size: 11px; letter-spacing: .08em; font-weight: 500; text-transform: uppercase; }
.store-symbol { font-size: 29px; line-height: 1; }
.overview { display: grid; grid-template-columns: 1.05fr 1fr; align-items: center; gap: 44px; padding: 36px; border: 1px solid var(--line); border-radius: 24px; background: var(--soft); }
h2 { margin-bottom: 16px; font-size: 30px; line-height: 1.25; letter-spacing: -.035em; }
.overview p { color: var(--muted); margin-bottom: 0; }
.workout-preview { padding: 24px; border: 1px solid #d5dfec; border-radius: 16px; background: #fff; box-shadow: 0 8px 24px #18385d08; }
.preview-label { display: block; color: var(--muted); font-size: 11px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; }
.preview-heading { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding-block: 12px 18px; border-bottom: 1px solid var(--line); }
.preview-heading strong { font-size: 20px; letter-spacing: -.025em; }
.preview-time { color: var(--blue); font-size: 14px; }
.exercise-list { list-style: none; margin: 0; padding: 0; }
.exercise-list li { display: flex; justify-content: space-between; gap: 16px; padding-top: 16px; font-size: 14px; }
.exercise-list li span:last-child { white-space: nowrap; color: var(--muted); font-variant-numeric: tabular-nums; }
.features { padding-block: 64px; }
.features > h2 { margin-bottom: 32px; }
.feature-grid { display: grid; grid-template-columns: 1fr 1fr; column-gap: 48px; row-gap: 28px; }
.feature { border-top: 1px solid var(--line); padding-top: 18px; }
.feature h3 { margin-bottom: 8px; font-size: 19px; line-height: 1.4; letter-spacing: -.02em; }
.feature p { margin-bottom: 0; color: var(--muted); font-size: 16px; }
.feature-number { display: inline-block; margin-right: 10px; color: var(--blue); font-size: 12px; font-weight: 650; font-variant-numeric: tabular-nums; }
.offline-note { display: flex; align-items: baseline; gap: 24px; margin-bottom: 64px; padding: 24px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.offline-note h2 { flex: 0 0 225px; margin-bottom: 0; font-size: 23px; }
.offline-note p { margin-bottom: 0; color: var(--muted); font-size: 16px; }
.site-footer { padding-block: 28px 36px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.footer-row { display: flex; flex-wrap: wrap; gap: 10px 24px; align-items: baseline; }
.footer-row p { margin-bottom: 0; }
.attribution { margin: 14px 0 0; }
.privacy { max-width: 740px; padding-block: 42px 64px; }
.privacy h1 { font-size: clamp(32px, 5vw, 46px); }
.privacy .effective-date { margin-bottom: 36px; color: var(--muted); font-size: 14px; }
.privacy section + section { margin-top: 32px; }
.privacy h2 { font-size: 23px; }
.privacy p, .privacy li { font-size: 16px; }
.privacy ul { padding-left: 22px; }
.privacy li + li { margin-top: 10px; }
.back-link { font-size: 14px; white-space: nowrap; }

@media (max-width: 640px) {
  .container { width: calc(100% - 40px); }
  .site-header { padding-block: 22px; }
  .header-row { align-items: flex-start; gap: 16px; flex-wrap: wrap; }
  .tagline { width: 100%; }
  .hero { padding-block: 30px 40px; }
  .hero-description { font-size: 18px; }
  .overview { grid-template-columns: 1fr; gap: 26px; padding: 24px; border-radius: 18px; }
  .workout-preview { padding: 20px; }
  h2 { font-size: 27px; }
  .features { padding-block: 40px; }
  .feature-grid { grid-template-columns: 1fr; gap: 24px; }
  .offline-note { display: block; margin-bottom: 40px; }
  .offline-note h2 { margin-bottom: 12px; }
  .privacy { padding-top: 26px; }
  .privacy h1 { overflow-wrap: anywhere; }
}