* {
  box-sizing: border-box;
}

:root {
  --bg: #05070c;
  --panel: #0d1118;
  --card: #111725;
  --muted: #9fb0c8;
  --text: #e8f0ff;
  --accent: #60a5fa;
  --accent-2: #7c3aed;
  --border: rgba(255, 255, 255, 0.08);
  --shadow: 0 20px 70px rgba(0, 0, 0, 0.35);
}

body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: radial-gradient(120% 120% at 10% 20%, rgba(96, 165, 250, 0.08), transparent 50%), radial-gradient(100% 120% at 90% 10%, rgba(124, 58, 237, 0.08), transparent 45%), var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 5vw;
  background: rgba(5, 7, 12, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand.small .brand-mark {
  width: 34px;
  height: 34px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 700;
  box-shadow: 0 10px 30px rgba(96, 165, 250, 0.4);
}

.brand-name {
  font-weight: 700;
}

.brand-sub {
  color: var(--muted);
  font-size: 14px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
}

.nav a {
  padding: 10px 12px;
  border-radius: 10px;
  color: var(--muted);
  font-weight: 500;
}

.nav a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.04);
}

.nav .pill {
  background: rgba(96, 165, 250, 0.12);
  color: #fff;
  border: 1px solid rgba(96, 165, 250, 0.35);
}

.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  padding: 8px;
}

.mobile-menu span {
  width: 28px;
  height: 2px;
  background: #fff;
  border-radius: 999px;
}

.hero {
  padding: 80px 5vw 40px;
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 32px;
  align-items: center;
}

.hero-copy h1 {
  font-size: clamp(32px, 4vw, 48px);
  margin: 10px 0 12px;
  line-height: 1.15;
}

.hero-copy .lede {
  color: var(--muted);
  max-width: 620px;
}

.eyebrow {
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 12px;
  color: var(--accent);
  font-weight: 700;
}

.lede {
  font-size: 16px;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 22px 0 10px;
}

.app-chip {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  margin-bottom: 12px;
  box-shadow: var(--shadow);
}

.app-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  object-fit: cover;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

.chip-title {
  font-weight: 700;
}

.chip-sub {
  color: var(--muted);
  font-size: 13px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 18px;
  border-radius: 12px;
  border: 1px solid var(--border);
  font-weight: 600;
  color: #fff;
  cursor: pointer;
  transition: transform 120ms ease, box-shadow 120ms ease, background 120ms ease;
}

.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border: none;
  box-shadow: 0 12px 32px rgba(96, 165, 250, 0.35);
}

.btn.ghost {
  background: rgba(255, 255, 255, 0.04);
}

.btn.secondary {
  background: rgba(96, 165, 250, 0.15);
  border: 1px solid rgba(96, 165, 250, 0.5);
}

.btn.small {
  padding: 10px 14px;
  font-size: 14px;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
}

.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.badge {
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  color: var(--muted);
  font-weight: 600;
  font-size: 13px;
}

.hero-card {
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0));
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 18px;
  box-shadow: var(--shadow);
}

.device {
  background: var(--panel);
  border-radius: 16px;
  padding: 18px;
  border: 1px solid var(--border);
}

.status {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  color: var(--muted);
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--muted);
}

.dot.on {
  background: #34d399;
  box-shadow: 0 0 0 6px rgba(52, 211, 153, 0.15);
}

.pill {
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  color: var(--muted);
  font-weight: 600;
}

.pill.small {
  padding: 6px 10px;
  font-size: 12px;
}

.pill.tiny {
  padding: 4px 8px;
  font-size: 12px;
}

.label {
  color: var(--muted);
  font-size: 13px;
  margin: 0 0 4px;
}

.sound-card {
  background: var(--card);
  border-radius: 12px;
  padding: 14px;
  border: 1px solid var(--border);
  margin-bottom: 12px;
}

.sound-name {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
}

.slider {
  margin-top: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.slider-bar {
  flex: 1;
  height: 8px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 999px;
  overflow: hidden;
}

.slider-fill {
  width: 70%;
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

.slider-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--accent);
  box-shadow: 0 6px 14px rgba(96, 165, 250, 0.4);
}

.sound-list {
  display: grid;
  gap: 8px;
}

.sound-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
}

.timer-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--card);
  border-radius: 12px;
  padding: 12px;
  border: 1px solid var(--border);
  margin-top: 12px;
}

.time {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
}

.note {
  margin-top: 14px;
  color: var(--muted);
  font-size: 14px;
}

.section {
  padding: 60px 5vw;
}

.section-head {
  max-width: 720px;
  margin-bottom: 32px;
}

.section h2 {
  margin: 6px 0 10px;
  font-size: clamp(26px, 3vw, 36px);
}

.cards .card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
  box-shadow: var(--shadow);
}

.card .icon {
  font-size: 22px;
  margin-bottom: 10px;
}

.card p {
  color: var(--muted);
  margin: 6px 0 0;
}

.sounds .sound-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.sound-tile {
  padding: 16px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: linear-gradient(145deg, rgba(96, 165, 250, 0.1), rgba(124, 58, 237, 0.04));
  box-shadow: var(--shadow);
}

.sound-tile h3 {
  margin: 4px 0;
}

.small {
  color: var(--muted);
  font-size: 14px;
}

.highlight-card {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  align-items: center;
  padding: 28px;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.08), rgba(96, 165, 250, 0.08));
  border: 1px solid rgba(124, 58, 237, 0.35);
  box-shadow: var(--shadow);
}

.list {
  display: grid;
  gap: 10px;
  margin-top: 12px;
  color: var(--muted);
}

.list-item {
  background: rgba(0, 0, 0, 0.2);
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
}

.highlight-visual {
  position: relative;
  min-height: 220px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 16px;
  border: 1px solid var(--border);
  overflow: hidden;
}

.pulse {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle, rgba(96, 165, 250, 0.15), transparent 60%);
  filter: blur(10px);
}

.wave {
  position: absolute;
  width: 140%;
  height: 120px;
  left: -20%;
  background: linear-gradient(90deg, rgba(96, 165, 250, 0.5), rgba(124, 58, 237, 0.6));
  opacity: 0.5;
  border-radius: 999px;
  filter: blur(18px);
}

.wave.one { top: 40px; animation: float 6s ease-in-out infinite; }
.wave.two { top: 90px; animation: float 7s ease-in-out infinite reverse; }
.wave.three { top: 140px; animation: float 8s ease-in-out infinite; }

@keyframes float {
  0% { transform: translateX(-10px); }
  50% { transform: translateX(10px); }
  100% { transform: translateX(-10px); }
}

.faq details {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 16px;
  margin-bottom: 10px;
  box-shadow: var(--shadow);
}

.faq summary {
  cursor: pointer;
  font-weight: 700;
}

.faq p {
  margin: 8px 0 0;
  color: var(--muted);
}

.cta {
  padding-bottom: 80px;
}

.cta-card {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  align-items: center;
  gap: 18px;
  padding: 24px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(96, 165, 250, 0.08), rgba(124, 58, 237, 0.08));
  border: 1px solid rgba(96, 165, 250, 0.35);
  box-shadow: var(--shadow);
}

.cta-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.footer {
  margin-top: auto;
  padding: 24px 5vw 30px;
  border-top: 1px solid var(--border);
  background: rgba(5, 7, 12, 0.9);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
  align-items: center;
}

.footer-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--muted);
  font-weight: 600;
}

.footer-meta {
  color: var(--muted);
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: flex-end;
  font-size: 14px;
}

@media (max-width: 900px) {
  .nav-links {
    position: absolute;
    inset: 70px 5vw auto 5vw;
    background: rgba(5, 7, 12, 0.95);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 14px;
    display: none;
    flex-direction: column;
    gap: 8px;
  }

  .nav.open .nav-links {
    display: flex;
  }

  .mobile-menu {
    display: inline-flex;
  }

  .hero {
    padding-top: 40px;
  }
}

@media (max-width: 640px) {
  .nav {
    padding: 16px 4vw;
  }

  .hero,
  .section {
    padding: 50px 4vw;
  }

  .cta-actions {
    justify-content: flex-start;
  }
}