:root {
  --bg: #0b0f1a;
  --bg-card: #12182a;
  --bg-elevated: #1a2238;
  --text: #e8ecf4;
  --text-muted: #9aa4b8;
  --accent: #6c5ce7;
  --accent-light: #a29bfe;
  --accent-glow: rgba(108, 92, 231, 0.35);
  --success: #00cec9;
  --border: rgba(255, 255, 255, 0.08);
  --radius: 14px;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  min-height: 100vh;
}

a {
  color: var(--accent-light);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: #fff;
}

img {
  max-width: 100%;
  display: block;
}

.container {
  width: min(1120px, 92vw);
  margin: 0 auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 15, 26, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
  gap: 1.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
}

.logo-mark {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--success));
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 0.85rem;
  color: #fff;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav a {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
}

.nav a:hover,
.nav a.active {
  color: var(--text);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.5rem;
  cursor: pointer;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.4rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #5f4dd6);
  color: #fff;
  box-shadow: 0 8px 24px var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px var(--accent-glow);
  color: #fff;
}

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

.btn-outline:hover {
  border-color: var(--accent-light);
  color: #fff;
}

/* Hero */
.hero {
  padding: 5rem 0 4rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -120px;
  right: -80px;
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, var(--accent-glow), transparent 70%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--accent-light);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
}

.hero h1 span {
  background: linear-gradient(135deg, var(--accent-light), var(--success));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 520px;
  margin-bottom: 2rem;
}

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

.hero-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 4px);
  padding: 2rem;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.35);
}

.hero-card h3 {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  font-weight: 500;
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.stat {
  background: var(--bg-elevated);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.stat strong {
  display: block;
  font-size: 1.5rem;
  color: var(--success);
  margin-bottom: 0.25rem;
}

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

/* Sections */
section {
  padding: 4.5rem 0;
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 3rem;
}

.section-header h2 {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
}

.section-header p {
  color: var(--text-muted);
  font-size: 1.05rem;
}

.section-label {
  display: inline-block;
  color: var(--accent-light);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color 0.2s, transform 0.2s;
}

.card:hover {
  border-color: rgba(108, 92, 231, 0.4);
  transform: translateY(-4px);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--bg-elevated);
  display: grid;
  place-items: center;
  font-size: 1.4rem;
  margin-bottom: 1.25rem;
}

.card h3 {
  font-size: 1.15rem;
  margin-bottom: 0.65rem;
}

.card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.card-tag {
  display: inline-block;
  padding: 0.25rem 0.65rem;
  border-radius: 6px;
  background: rgba(0, 206, 201, 0.12);
  color: var(--success);
  font-size: 0.75rem;
  font-weight: 600;
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.about-list {
  list-style: none;
  margin-top: 1.5rem;
}

.about-list li {
  padding: 0.65rem 0;
  padding-left: 1.5rem;
  position: relative;
  color: var(--text-muted);
}

.about-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--success);
  font-weight: 700;
}

.about-panel {
  background: linear-gradient(145deg, var(--bg-card), var(--bg-elevated));
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 4px);
  padding: 2rem;
}

.about-panel h3 {
  margin-bottom: 1rem;
}

.about-panel dl {
  display: grid;
  gap: 1rem;
}

.about-panel dt {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.about-panel dd {
  font-weight: 500;
}

/* CTA */
.cta {
  background: linear-gradient(135deg, rgba(108, 92, 231, 0.15), rgba(0, 206, 201, 0.08));
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 6px);
  padding: 3rem;
  text-align: center;
}

.cta h2 {
  font-size: 1.75rem;
  margin-bottom: 0.75rem;
}

.cta p {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
}

.contact-card h3 {
  margin-bottom: 1.25rem;
}

.contact-item {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.contact-item-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--bg-elevated);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.contact-item strong {
  display: block;
  margin-bottom: 0.2rem;
}

.contact-item span,
.contact-item a {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Legal pages */
.page-hero {
  padding: 3.5rem 0 2rem;
  border-bottom: 1px solid var(--border);
}

.page-hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin-bottom: 0.5rem;
}

.page-hero .meta {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.legal-content {
  padding: 3rem 0 4rem;
  max-width: 760px;
}

.legal-content h2 {
  font-size: 1.25rem;
  margin: 2rem 0 0.75rem;
}

.legal-content p,
.legal-content li {
  color: var(--text-muted);
  margin-bottom: 0.85rem;
}

.legal-content ul {
  padding-left: 1.25rem;
  margin-bottom: 1rem;
}

/* Product page */
.product-hero {
  padding: 3rem 0;
}

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 2px);
  overflow: hidden;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0;
}

.product-card + .product-card {
  margin-top: 1.5rem;
}

.product-thumb {
  width: 200px;
  background: linear-gradient(160deg, var(--bg-elevated), var(--accent-glow));
  display: grid;
  place-items: center;
  font-size: 3rem;
  padding: 2rem;
}

.product-body {
  padding: 2rem;
}

.product-body h2 {
  font-size: 1.35rem;
  margin-bottom: 0.5rem;
}

.product-body .price {
  color: var(--success);
  font-weight: 700;
  margin-bottom: 1rem;
}

.product-features {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0;
}

.product-features span {
  padding: 0.3rem 0.7rem;
  border-radius: 6px;
  background: var(--bg-elevated);
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 3rem 0 2rem;
  margin-top: 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.footer-grid h4 {
  font-size: 0.9rem;
  margin-bottom: 1rem;
  color: var(--text);
}

.footer-grid ul {
  list-style: none;
}

.footer-grid li {
  margin-bottom: 0.5rem;
}

.footer-grid a {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 900px) {
  .hero-grid,
  .about-grid,
  .contact-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .product-card {
    grid-template-columns: 1fr;
  }

  .product-thumb {
    width: 100%;
    min-height: 120px;
  }

  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 1rem 4vw;
    gap: 1rem;
  }

  .nav.open {
    display: flex;
  }

  .nav-toggle {
    display: block;
  }

  .header-inner {
    position: relative;
  }
}