:root {
  --bg: #050c1c;
  --bg-alt: #0d1a33;
  --card: #111f37;
  --card-alt: #172a45;
  --accent: #38bdf8;
  --accent-soft: rgba(56, 189, 248, 0.16);
  --accent-strong: #22d3ee;
  --text-primary: #f8fbff;
  --text-secondary: #8ea2c6;
  --text-muted: #64748b;
  --border: rgba(148, 163, 184, 0.12);
  --shadow: 0 24px 44px rgba(2, 8, 23, 0.5);
  --max-width: 1024px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  background:
    radial-gradient(160% 160% at 18% -40%, rgba(56, 189, 248, 0.28), transparent 55%),
    radial-gradient(140% 140% at 82% -20%, rgba(37, 99, 235, 0.22), transparent 50%),
    radial-gradient(120% 120% at 50% 120%, rgba(16, 185, 129, 0.18), transparent 55%),
    var(--bg);
  color: var(--text-primary);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

.noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160' viewBox='0 0 160 160'%3E%3Cfilter id='a' x='0' y='0'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.6' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23a)' /%3E%3C/svg%3E");
  z-index: 1;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(14px);
  background: rgba(5, 12, 28, 0.72);
  border-bottom: 1px solid rgba(148, 163, 184, 0.06);
}

.container {
  width: min(var(--max-width), calc(100% - 48px));
  margin: 0 auto;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(17, 31, 55, 0.92), rgba(15, 27, 51, 0.8));
  border: 1px solid rgba(148, 163, 184, 0.15);
  position: relative;
  display: grid;
  place-items: center;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.pulse {
  display: block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.82;
  animation: pulse 3.2s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

.pulse:nth-child(2) {
  animation-delay: 1.2s;
}

.pulse:nth-child(3) {
  animation-delay: 2.4s;
}

@keyframes pulse {
  0%,
  85%,
  100% {
    transform: scale(0.6);
    opacity: 0.7;
  }
  40% {
    transform: scale(1);
    opacity: 1;
  }
}

.brand-title {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.brand-subtitle {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--text-secondary);
}

.nav-links {
  display: flex;
  gap: 20px;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--accent);
}

.hero {
  display: grid;
  gap: 36px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  align-items: center;
  padding: 80px 0 60px;
  position: relative;
  z-index: 2;
}

@media (min-width: 960px) {
  .hero {
    grid-template-columns: minmax(360px, 1.2fr) minmax(280px, 0.8fr);
  }
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.16);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.badge-secondary {
  margin-top: 12px;
  background: rgba(37, 99, 235, 0.22);
  color: #93c5fd;
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  line-height: 1.2;
  margin: 26px 0 16px;
}

.hero p {
  color: var(--text-secondary);
  max-width: 540px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 24px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 22px;
  border-radius: 12px;
  border: 1px solid transparent;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border 0.2s ease;
}

.button.primary {
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.9), rgba(16, 185, 129, 0.9));
  color: #041421;
  box-shadow: 0 16px 32px rgba(16, 185, 129, 0.35);
}

.button.ghost {
  background: rgba(148, 163, 184, 0.08);
  color: var(--text-primary);
  border: 1px solid rgba(148, 163, 184, 0.16);
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 20px 36px rgba(56, 189, 248, 0.35);
}

.hero-card {
  display: grid;
}

.hero-card .card,
.problem-grid .card,
.feature-grid .card,
.journey-grid .card {
  height: 100%;
}

.card {
  background: linear-gradient(135deg, rgba(17, 31, 55, 0.92), rgba(15, 27, 51, 0.8));
  border-radius: 24px;
  padding: 28px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}

.card::after {
  content: "";
  position: absolute;
  inset: -40% 60% auto -30%;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.28), transparent 65%);
  opacity: 0.7;
  pointer-events: none;
}

.card h2,
.card h3 {
  margin-top: 0;
  margin-bottom: 14px;
}

.card ul {
  padding-left: 20px;
  margin: 0;
  color: var(--text-secondary);
}

.card ul li {
  margin-bottom: 10px;
}

.section {
  padding: 60px 0;
  position: relative;
  z-index: 2;
}

.section-heading {
  max-width: 680px;
  margin-bottom: 40px;
}

.section-heading.align-center {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.section-heading h2 {
  font-size: clamp(2rem, 4vw, 2.6rem);
  margin-bottom: 16px;
}

.info-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.problem-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

@media (min-width: 992px) {
  .problem-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}


.problem-card {
  position: relative;
  overflow: hidden;
  padding: 26px;
}

.problem-card::after {
  content: "";
  position: absolute;
  inset: -45% 35% 40% -35%;
  background: radial-gradient(130px, rgba(56, 189, 248, 0.28), transparent 70%);
  opacity: 0.65;
  pointer-events: none;
}

.problem-card h3 {
  margin-top: 0;
  letter-spacing: 0.05em;
}

.feature-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

@media (min-width: 1100px) {
  .feature-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

.feature-card {
  position: relative;
  overflow: hidden;
  padding: 26px;
}

.feature-card::after {
  content: "";
  position: absolute;
  inset: -45% 40% 55% -35%;
  background: radial-gradient(130px, rgba(16, 185, 129, 0.28), transparent 70%);
  opacity: 0.6;
  pointer-events: none;
}

.problem-icon,
.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 15px;
  background: rgba(56, 189, 248, 0.22);
  display: grid;
  place-items: center;
  font-size: 20px;
  color: var(--accent);
  margin-bottom: 16px;
  box-shadow: 0 18px 36px rgba(5, 12, 28, 0.5);
}

.problem-card h3,
.feature-card h3 {
  margin: 0 0 12px;
  color: var(--text-primary);
}

.problem-card p,
.feature-card p {
  color: var(--text-secondary);
}

.journey {
  border-radius: 28px;
}

.journey-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.journey-grid ul {
  margin: 12px 0 0;
  padding-left: 20px;
  color: var(--text-secondary);
}

.journey-grid li {
  margin-bottom: 8px;
}

.track-callout {
  padding-top: 0;
}

.track-card {
  position: relative;
  overflow: hidden;
  padding: 32px;
  border-radius: 24px;
  border: 1px solid rgba(148, 163, 184, 0.14);
  background:
    linear-gradient(160deg, rgba(13, 26, 51, 0.88), rgba(37, 99, 235, 0.32)),
    rgba(5, 12, 28, 0.92);
  box-shadow: 0 34px 68px rgba(6, 12, 28, 0.55);
}

.track-card::after {
  content: "";
  position: absolute;
  inset: -60% 55% 30% -35%;
  background: radial-gradient(200px, rgba(56, 189, 248, 0.28), transparent 70%);
  opacity: 0.6;
  pointer-events: none;
}

.track-card h2 {
  margin-top: 12px;
  margin-bottom: 16px;
}

.track-card p {
  color: var(--text-secondary);
}

.track-card ul {
  margin: 16px 0 0;
  padding-left: 20px;
  color: var(--text-secondary);
}

.track-card li {
  margin-bottom: 8px;
}

.track-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.16);
  color: var(--accent);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section-heading p {
  max-width: 720px;
  margin-inline: auto;
  color: var(--text-secondary);
}

.section-split {
  display: grid;
  gap: 28px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.feature-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 14px;
  color: var(--text-secondary);
}

.parent-mode-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.parent-mode-visual {
  display: grid;
  gap: 16px;
}

.parent-mode-mockup {
  background:
    linear-gradient(135deg, rgba(17, 31, 55, 0.9), rgba(56, 189, 248, 0.18)),
    rgba(13, 26, 51, 0.7);
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: 16px;
  padding: 18px 20px;
  display: grid;
  gap: 12px;
  box-shadow: 0 24px 42px rgba(5, 12, 28, 0.4);
}

.mockup-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.2);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.mockup-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
  color: var(--text-primary);
  background: rgba(5, 12, 28, 0.42);
  border-radius: 12px;
  padding: 10px 12px;
  border: 1px solid rgba(148, 163, 184, 0.12);
}

.mockup-tag {
  font-size: 12px;
  color: var(--accent);
  background: rgba(56, 189, 248, 0.16);
  border-radius: 999px;
  padding: 4px 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.accent-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  margin-right: 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
}

.install-card {
  max-width: 720px;
  margin: 0 auto;
}

.steps {
  margin: 24px 0 0;
  padding-left: 20px;
  counter-reset: step;
  color: var(--text-secondary);
}

.steps li {
  margin-bottom: 14px;
}

.steps a {
  color: var(--accent);
}

.mono {
  font-family: "JetBrains Mono", "Fira Code", "SFMono-Regular", Menlo, Monaco, Consolas, monospace;
  background: rgba(148, 163, 184, 0.08);
  padding: 2px 6px;
  border-radius: 6px;
}

.site-footer {
  position: relative;
  margin-top: 60px;
  padding: 18px 0;
  overflow: hidden;
  border-top: 1px solid rgba(148, 163, 184, 0.08);
  background:
    radial-gradient(120% 140% at 100% 0%, rgba(56, 189, 248, 0.18), transparent 65%),
    radial-gradient(140% 160% at 0% 100%, rgba(59, 130, 246, 0.2), transparent 60%),
    linear-gradient(135deg, #0b1226, #101b2f 55%, #0f1729);
}

.footer-inner {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 12px;
  position: relative;
  z-index: 1;
}

.footer-inner::before {
  content: "";
  position: absolute;
  inset: -40px 60% auto -20%;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.28), transparent 70%);
  opacity: 0.7;
  pointer-events: none;
  filter: blur(4px);
  z-index: -1;
}

.footer-copy {
  color: rgba(226, 232, 240, 0.86);
  margin: 0;
  line-height: 1.5;
  white-space: normal;
  font-size: 0.95rem;
}

.footer-copy a {
  color: #facc15;
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
  transition: color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.footer-copy a:hover,
.footer-copy a:focus-visible {
  color: #f97316;
  border-color: rgba(249, 115, 22, 0.6);
  box-shadow: 0 8px 20px rgba(249, 115, 22, 0.25);
}

@media (max-width: 720px) {
  .nav-links {
    gap: 14px;
    flex-wrap: wrap;
    justify-content: flex-end;
  }

  .hero {
    padding-top: 60px;
  }

  .card {
    padding: 24px;
  }
}

@media (max-width: 560px) {
  :root {
    --max-width: 640px;
  }

  .container {
    width: calc(100% - 32px);
  }

  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    padding: 16px 0 18px;
  }

  .brand {
    width: 100%;
    justify-content: space-between;
    gap: 12px;
  }

  .brand-title {
    font-size: 20px;
  }

  .brand-subtitle {
    font-size: 11px;
  }

  .nav-links {
    width: 100%;
    justify-content: flex-start;
    gap: 12px;
  }

  .nav-links a {
    font-size: 0.9rem;
    padding: 4px 0;
  }

  .hero {
    padding: 48px 0 40px;
    text-align: left;
  }

  .hero h1 {
    font-size: clamp(2rem, 8vw, 2.6rem);
  }

  .hero p {
    font-size: 0.98rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .button {
    width: 100%;
  }

  .card {
    padding: 22px;
    border-radius: 20px;
  }

  .badge {
    font-size: 12px;
  }

  .section {
    padding: 48px 0;
  }

  .section-heading {
    margin-bottom: 28px;
  }

  .footer-inner {
    flex-direction: column;
    align-items: center;
    gap: 16px;
  }

  .footer-copy {
    white-space: normal;
    text-align: center;
  }
}

@media (max-width: 420px) {
  .brand {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-links {
    gap: 8px;
  }

  .nav-links a {
    font-size: 0.85rem;
  }

  .hero h1 {
    font-size: clamp(1.8rem, 9vw, 2.3rem);
  }

  .steps li {
    margin-bottom: 12px;
  }
}