:root {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --subtle: #f0f2f5;
  --border: #e2e6ed;
  --text: #1a1d26;
  --muted: #647089;
  --primary: #4361ee;
  --primary-soft: rgba(67, 97, 238, 0.1);
  --secondary: #0d9488;
  --shadow: 0 4px 18px rgba(26, 29, 38, 0.08);
  font-family: "Segoe UI", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", Meiryo, system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 16% 14%, rgba(67, 97, 238, 0.1), transparent 30rem),
    var(--bg);
}

a {
  color: inherit;
}

:focus-visible {
  outline: 3px solid rgba(67, 97, 238, 0.35);
  outline-offset: 3px;
}

.page {
  width: min(100% - 40px, 840px);
  min-height: 100vh;
  margin: 0 auto;
  padding: clamp(64px, 10vw, 110px) 0 32px;
}

.hero {
  max-width: 600px;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--primary);
  font-size: 12px;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(36px, 8vw, 58px);
  line-height: 1.08;
  letter-spacing: -0.045em;
}

.lead {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 16px;
}

.apps {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 44px;
}

.app-card {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  min-height: 124px;
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
  box-shadow: var(--shadow);
  text-decoration: none;
  transition: transform 150ms ease, border-color 150ms ease, box-shadow 150ms ease;
}

.app-card:hover {
  transform: translateY(-2px);
  border-color: rgba(67, 97, 238, 0.35);
  box-shadow: 0 8px 26px rgba(26, 29, 38, 0.11);
}

.app-icon {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border-radius: 14px;
  font-size: 25px;
  font-weight: 750;
}

.app-icon.song {
  color: var(--secondary);
  background: rgba(13, 148, 136, 0.11);
}

.app-icon.analytics {
  color: var(--primary);
  background: var(--primary-soft);
}

.app-copy {
  display: grid;
  gap: 4px;
}

.app-copy strong {
  font-size: 16px;
}

.app-copy > span {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.arrow {
  color: var(--primary);
  font-size: 20px;
}

footer {
  margin-top: 70px;
  color: var(--muted);
  font-size: 12px;
}

@media (max-width: 680px) {
  .page {
    width: min(100% - 28px, 560px);
  }

  .apps {
    grid-template-columns: 1fr;
    margin-top: 34px;
  }

  .app-card {
    min-height: 108px;
    padding: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition-duration: 0.01ms !important;
  }
}