:root {
  --bg-top: #0c4460;
  --bg-bottom: #0a1830;
  --panel: rgba(13, 28, 45, 0.72);
  --panel-border: rgba(189, 228, 255, 0.22);
  --text-main: #f3f6f9;
  --text-soft: rgba(243, 246, 249, 0.78);
  --accent: #88e0d0;
  --accent-strong: #9de3ff;
  --shadow: rgba(3, 10, 20, 0.35);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text-main);
  font-family: "Avenir Next", "Trebuchet MS", sans-serif;
  background:
    radial-gradient(circle at 15% 20%, rgba(136, 224, 208, 0.26), transparent 32%),
    radial-gradient(circle at 85% 15%, rgba(157, 227, 255, 0.24), transparent 26%),
    linear-gradient(160deg, var(--bg-top), var(--bg-bottom));
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: auto;
  border-radius: 999px;
  pointer-events: none;
  filter: blur(1px);
}

body::before {
  width: 42vw;
  height: 42vw;
  left: -10vw;
  bottom: -12vw;
  background: rgba(122, 219, 214, 0.18);
}

body::after {
  width: 36vw;
  height: 36vw;
  right: -8vw;
  top: 8vh;
  background: rgba(87, 151, 255, 0.18);
}

.page-shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 64px;
  position: relative;
}

.hero,
.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  box-shadow: 0 24px 70px var(--shadow);
  backdrop-filter: blur(18px);
}

.hero {
  padding: 44px;
  border-radius: 36px;
  display: grid;
  grid-template-columns: 1.2fr 0.9fr;
  gap: 28px;
  align-items: center;
}

.eyebrow,
.section-label {
  margin: 0 0 12px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 12px;
  font-weight: 700;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: "Gill Sans", "Avenir Next", sans-serif;
}

h1 {
  font-size: clamp(52px, 9vw, 96px);
  line-height: 0.95;
  letter-spacing: -0.05em;
}

h2 {
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.02;
  margin-bottom: 18px;
}

h3 {
  font-size: 20px;
  margin-bottom: 10px;
}

.hero-text,
.body-copy,
.feature p {
  margin: 0;
  color: var(--text-soft);
  font-size: 19px;
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.hero-actions a,
.link-list a {
  text-decoration: none;
}

.primary-link,
.secondary-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 180ms ease, opacity 180ms ease, border-color 180ms ease;
}

.primary-link {
  color: #071321;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
}

.secondary-link {
  color: var(--text-main);
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.04);
}

.primary-link:hover,
.secondary-link:hover,
.link-list a:hover {
  transform: translateY(-1px);
}

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

.sound-card {
  min-height: 172px;
  padding: 20px;
  border-radius: 28px;
  background: linear-gradient(160deg, rgba(131, 203, 255, 0.16), rgba(112, 180, 223, 0.08));
  border: 1px solid rgba(191, 233, 255, 0.26);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.sound-emoji {
  font-size: clamp(42px, 5vw, 58px);
}

.sound-name {
  font-size: 21px;
  font-weight: 700;
}

.panel {
  margin-top: 24px;
  padding: 34px;
  border-radius: 30px;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.feature {
  padding: 22px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.accent-panel {
  background:
    radial-gradient(circle at top right, rgba(157, 227, 255, 0.14), transparent 24%),
    rgba(13, 28, 45, 0.72);
}

.link-list {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.link-list a {
  color: var(--text-main);
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.05);
  padding: 14px 18px;
  border-radius: 18px;
  font-weight: 700;
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .feature-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .page-shell {
    width: min(100% - 20px, 1120px);
    padding: 16px 0 32px;
  }

  .hero,
  .panel {
    padding: 24px;
    border-radius: 24px;
  }

  .sound-grid {
    grid-template-columns: 1fr 1fr;
  }

  .sound-card {
    min-height: 144px;
    padding: 16px;
  }

  .hero-text,
  .body-copy,
  .feature p {
    font-size: 17px;
  }
}