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

:root {
  --bg: #0b0f14;
  --bg-card: #121820;
  --text: #e8edf2;
  --text-muted: #8b98a8;
  --accent: #2ee6a8;
  --accent-dim: #1a9e6f;
  --border: #243040;
  --max-width: 1100px;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(11, 15, 20, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.logo {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text);
  text-decoration: none;
}

.logo:hover {
  color: var(--accent);
  text-decoration: none;
}

nav {
  display: flex;
  gap: 1.5rem;
}

nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
}

nav a:hover {
  color: var(--text);
  text-decoration: none;
}

/* Hero */

.hero {
  padding: 4rem 0 5rem;
  background:
    radial-gradient(ellipse at 70% 20%, rgba(46, 230, 168, 0.08), transparent 50%),
    var(--bg);
}

.hero-inner {
  display: grid;
  gap: 3rem;
  align-items: center;
}

@media (min-width: 768px) {
  .hero-inner {
    grid-template-columns: 1fr 1fr;
  }
}

.eyebrow {
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0 0 0.75rem;
}

h1 {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  line-height: 1.1;
  margin: 0 0 1rem;
}

.lead {
  color: var(--text-muted);
  font-size: 1.125rem;
  max-width: 32rem;
  margin: 0 0 2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
}

.btn:hover {
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: var(--bg);
}

.btn-primary:hover {
  background: var(--accent-dim);
  color: var(--bg);
}

.btn-ghost {
  border: 1px solid var(--border);
  color: var(--text);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* Gauge mockup */

.gauge-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.4);
}

.gauge {
  text-align: center;
  padding: 2rem;
  border: 2px solid var(--accent);
  border-radius: 50%;
  width: 180px;
  height: 180px;
  margin: 0 auto 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 32px rgba(46, 230, 168, 0.15);
}

.gauge-value {
  font-size: 3rem;
  font-weight: 700;
  line-height: 1;
  color: var(--accent);
}

.gauge-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.gauge-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

.mini-gauge {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem;
  text-align: center;
}

.mini-gauge span {
  display: block;
  font-weight: 600;
  font-size: 1.1rem;
}

.mini-gauge small {
  color: var(--text-muted);
  font-size: 0.75rem;
}

/* Features */

.features {
  padding: 5rem 0;
}

.features h2 {
  text-align: center;
  font-size: clamp(1.5rem, 3vw, 2rem);
  max-width: 28rem;
  margin: 0 auto 3rem;
}

.feature-grid {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 600px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .feature-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
}

.feature-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
}

.feature-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Download */

.download {
  padding: 5rem 0;
  background: var(--bg-card);
  border-block: 1px solid var(--border);
}

.download-inner {
  text-align: center;
}

.download h2 {
  margin: 0 0 0.5rem;
}

.download > .container > p,
.download-inner > p {
  color: var(--text-muted);
  margin: 0 0 2rem;
}

.store-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.store-btn {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 0.75rem 1.5rem;
  background: #000;
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  text-decoration: none;
  min-width: 180px;
}

.store-btn:hover {
  border-color: var(--accent);
  text-decoration: none;
}

.store-label {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.store-name {
  font-size: 1.25rem;
  font-weight: 600;
}

.note {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Contact */

.contact {
  padding: 4rem 0;
  text-align: center;
}

.contact h2 {
  margin: 0 0 0.5rem;
}

.contact p {
  color: var(--text-muted);
  margin: 0;
}

/* Footer */

.site-footer {
  padding: 2rem 0;
  border-top: 1px solid var(--border);
  text-align: center;
}

.site-footer p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}