:root {
  --bg: #fffaf2;
  --bg-alt: #fff3e0;
  --surface: #ffffff;
  --surface-soft: #fff8ec;
  --text: #2d241c;
  --muted: #6f5f52;
  --line: #f0dfcb;
  --accent: #1f9d72;
  --accent-strong: #167a58;
  --accent-soft: #e2f7ee;
  --cta-text: #ffffff;
  --chip-bg: #fff0d8;
  --shadow: 0 14px 40px rgba(166, 116, 56, 0.12);
  --radius-lg: 24px;
  --radius-md: 16px;
  --transition: 220ms ease;
  font-family: "Inter", "PingFang SC", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

[data-theme='warm'] {
  --bg: #fff7f0;
  --bg-alt: #ffe9d9;
  --surface: #fffdfa;
  --surface-soft: #fff2e8;
  --text: #332419;
  --muted: #795f4d;
  --line: #f5d8c4;
  --accent: #f06a4b;
  --accent-strong: #d75335;
  --accent-soft: #ffe2d8;
  --cta-text: #ffffff;
  --chip-bg: #ffe6d9;
  --shadow: 0 14px 40px rgba(198, 102, 63, 0.16);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-alt) 100%);
  color: var(--text);
  transition: background var(--transition), color var(--transition);
}
img { max-width: 100%; height: auto; border-radius: var(--radius-md); }
a { color: inherit; }
main { display: block; }
.container { width: min(1120px, 92vw); margin: 0 auto; }
.section { padding: 3rem 0; }
.section-title { font-size: clamp(1.5rem, 2vw, 2.05rem); margin: 0 0 0.9rem; }
.muted { color: var(--muted); line-height: 1.6; }
.grid { display: grid; gap: 1rem; }
.grid.cards { grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 1.15rem;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.card:hover { transform: translateY(-2px); }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.78rem 1.16rem;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 700;
  transition: all var(--transition);
}
.btn.primary { background: var(--accent); color: var(--cta-text); }
.btn.primary:hover { background: var(--accent-strong); transform: translateY(-1px); }
.btn.secondary {
  border-color: var(--line);
  background: var(--surface);
  color: var(--text);
}
.btn.secondary:hover { border-color: var(--accent); color: var(--accent-strong); }
.chips { display: flex; flex-wrap: wrap; gap: 0.65rem; margin-top: 1rem; }
.chips span {
  background: var(--chip-bg);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.42rem 0.72rem;
  font-size: 0.9rem;
}
.badge-row { display: flex; flex-wrap: wrap; align-items: center; gap: 0.8rem; margin-top: 1rem; }
.badge-row a { display: inline-flex; }
.badge-row img { height: 52px; border-radius: 0; }
.how-grid, .pricing-grid, .audience-grid, .download-grid, .faq, .info-grid { display: grid; gap: 1rem; }
.how-grid, .download-grid, .pricing-grid, .audience-grid, .info-grid { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.faq details {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0.85rem 1rem;
}
.cta-band {
  padding: 1.2rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: var(--surface-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  align-items: center;
  justify-content: space-between;
}
.hero {
  padding: 4.3rem 0 2.4rem;
}
.hero-panel {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 1.2rem;
  align-items: center;
}
.hero-image-wrap {
  padding: 0.7rem;
  border-radius: var(--radius-lg);
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.9), rgba(255, 244, 224, 0.7));
  border: 1px solid var(--line);
}

@media (max-width: 900px) {
  .hero-panel { grid-template-columns: 1fr; }
  .section { padding: 2.3rem 0; }
}