:root {
  color-scheme: light;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Microsoft YaHei", sans-serif;
  color: #101514;
  background: #f8faf9;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: clip;
  background:
    linear-gradient(135deg, rgba(30, 91, 86, 0.08), transparent 38%),
    linear-gradient(180deg, #ffffff 0%, #f4f8f6 100%);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px clamp(20px, 6vw, 96px);
  border-bottom: 1px solid rgba(16, 21, 20, 0.08);
  background: rgba(248, 250, 249, 0.82);
  backdrop-filter: blur(18px);
}

.brand,
nav,
.actions {
  display: flex;
  align-items: center;
}

.brand {
  gap: 12px;
  font-weight: 760;
  letter-spacing: 0;
}

.brand img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
}

nav {
  gap: 28px;
  color: #5b6966;
  font-size: 14px;
  font-weight: 650;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(340px, 0.95fr);
  gap: clamp(32px, 7vw, 104px);
  align-items: center;
  min-height: calc(100svh - 73px);
  padding: clamp(48px, 8vw, 112px) clamp(20px, 6vw, 96px) 72px;
}

.hero-copy {
  max-width: 780px;
  min-width: 0;
}

.eyebrow {
  margin: 0 0 18px;
  color: #20746f;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 24px;
  max-width: 760px;
  font-size: clamp(48px, 7.4vw, 96px);
  line-height: 0.98;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

h1 span {
  display: block;
}

.lead {
  max-width: 660px;
  margin-bottom: 34px;
  color: #52615e;
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.75;
  overflow-wrap: anywhere;
}

.actions {
  flex-wrap: wrap;
  gap: 12px;
}

.download-button {
  min-width: 150px;
  height: 48px;
  border: 1px solid rgba(16, 21, 20, 0.12);
  border-radius: 8px;
  background: #e6ebe9;
  color: #7a8582;
  font: inherit;
  font-weight: 760;
  cursor: not-allowed;
}

.product-panel {
  display: flex;
  justify-content: center;
  min-width: 0;
  max-width: 100%;
}

.app-glass {
  width: 100%;
  max-width: 420px;
  min-width: 0;
  padding: 22px;
  border: 1px solid rgba(16, 21, 20, 0.12);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 32px 110px rgba(21, 49, 45, 0.16);
}

.status-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
  color: #52615e;
  font-size: 14px;
  font-weight: 760;
}

.focus-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.focus-grid span {
  display: grid;
  place-items: center;
  min-width: 0;
  aspect-ratio: 1;
  border-radius: 8px;
  background: #12201e;
  color: #f8faf9;
  font-size: 28px;
  font-weight: 820;
}

.focus-grid span:nth-child(4) {
  background: #20746f;
}

.session-card {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 16px;
  padding: 16px;
  border-radius: 8px;
  background: #edf5f2;
  color: #24312f;
}

.session-card span {
  color: #5b6966;
}

.training-section {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: clamp(28px, 6vw, 80px);
  padding: 84px clamp(20px, 6vw, 96px) 104px;
  border-top: 1px solid rgba(16, 21, 20, 0.08);
}

.training-section h2 {
  max-width: 520px;
  margin-bottom: 0;
  font-size: clamp(34px, 4vw, 54px);
  line-height: 1.08;
  letter-spacing: 0;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

article {
  min-height: 220px;
  padding: 24px;
  border: 1px solid rgba(16, 21, 20, 0.1);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
}

article span {
  display: block;
  margin-bottom: 42px;
  color: #20746f;
  font-weight: 820;
}

article h3 {
  margin-bottom: 12px;
  font-size: 22px;
}

article p {
  margin-bottom: 0;
  color: #52615e;
  line-height: 1.7;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 28px clamp(20px, 6vw, 96px);
  border-top: 1px solid rgba(16, 21, 20, 0.08);
  color: #6a7774;
  font-size: 13px;
  font-weight: 620;
}

.site-footer a {
  color: #52615e;
}

@media (max-width: 980px) {
  .site-header {
    align-items: flex-start;
    gap: 16px;
  }

  .hero,
  .training-section,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 42px;
  }

  .product-panel {
    justify-content: flex-start;
  }
}

@media (max-width: 560px) {
  .site-header {
    flex-direction: column;
  }

  h1 {
    font-size: 32px;
    line-height: 1.08;
    word-break: break-all;
  }

  .hero {
    padding-inline: 24px;
  }

  .hero-copy,
  .product-panel {
    width: 100%;
  }

  .app-glass {
    width: 100%;
    max-width: 342px;
    padding: 16px;
  }

  .lead {
    font-size: 16px;
    line-height: 1.85;
  }

  .focus-grid span {
    font-size: 24px;
  }

  .focus-grid {
    gap: 10px;
  }

  .session-card {
    flex-direction: column;
  }

  .download-button {
    width: 100%;
  }

  .site-footer {
    flex-direction: column;
  }
}