:root {
  --primary: #00d4ff;
  --primary-dark: #0099cc;
  --accent: #00ff88;
  --bg-1: #1a2233;
  --bg-2: #243049;
  --card: #2a3550;
  --card-dark: #344162;
  --text: #ffffff;
  --muted: #8a9bb8;
  --border: rgba(255, 255, 255, 0.08);
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}

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

body {
  font-family: "Inter", sans-serif;
  color: var(--text);
  background: linear-gradient(135deg, var(--bg-1), var(--bg-2));
  min-height: 100vh;
}

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

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

.container {
  width: min(1100px, 92%);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(14px);
  background: rgba(26, 34, 51, 0.78);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
}

.brand img {
  width: 34px;
  height: 34px;
  border-radius: 8px;
}

.brand.small {
  font-size: 16px;
}

.brand.small img {
  width: 28px;
  height: 28px;
}

.nav-links {
  display: flex;
  gap: 18px;
  font-weight: 500;
  color: var(--muted);
}

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

.nav-cta {
  display: flex;
  gap: 12px;
}

.btn {
  border-radius: 14px;
  padding: 12px 20px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border 0.2s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #001018;
  box-shadow: 0 10px 22px rgba(0, 212, 255, 0.25);
}

.btn-primary:hover {
  transform: translateY(-1px);
}

.btn-ghost {
  border: 1px solid var(--border);
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

.btn-ghost:hover {
  border-color: rgba(255, 255, 255, 0.2);
}

.hero {
  padding: 80px 0 60px;
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 40px;
  align-items: center;
}

.hero-copy h1 {
  font-size: clamp(32px, 4vw, 48px);
  margin: 16px 0;
}

.hero-copy p {
  color: var(--muted);
  line-height: 1.6;
  font-size: 18px;
}

.pill {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(0, 255, 136, 0.12);
  color: var(--accent);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.4px;
}

.hero-actions {
  margin: 26px 0 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-meta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 14px;
}

.hero-card {
  background: linear-gradient(160deg, rgba(26, 31, 58, 0.9), rgba(15, 19, 32, 0.9));
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 26px;
  box-shadow: var(--shadow);
}

.hero-preview {
  display: grid;
  gap: 20px;
}

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

.preview-top img {
  width: 44px;
  height: 44px;
}

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

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

.preview-screen {
  display: grid;
  grid-template-columns: repeat(3, minmax(80px, 1fr));
  gap: 12px;
}

.screen-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px 12px;
  display: grid;
  justify-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: 13px;
}

.screen-card img {
  width: 34px;
  height: 34px;
}

.preview-footer {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 13px;
}

.section {
  padding: 70px 0;
}

.section.alt {
  background: rgba(255, 255, 255, 0.05);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-header {
  margin-bottom: 32px;
}

.section-header h2 {
  font-size: clamp(26px, 3vw, 34px);
  margin-bottom: 12px;
}

.section-header p {
  color: var(--muted);
  max-width: 640px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.feature-card,
.platform-card {
  padding: 22px;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: rgba(26, 31, 58, 0.6);
}

.platform-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.platform-logo {
  min-width: 56px;
  height: 56px;
  border-radius: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.4px;
  color: #0b101b;
  box-shadow: 0 12px 18px rgba(0, 0, 0, 0.25);
}

.platform-logo img {
  width: 34px;
  height: 34px;
  object-fit: contain;
  display: block;
}

.platform-logo.android {
  background: linear-gradient(140deg, #9ef1ff, #00d4ff);
}

.platform-logo.ios {
  background: linear-gradient(140deg, #d7dbe8, #a6b0c4);
}

.platform-logo.web {
  background: linear-gradient(140deg, #c5ffdf, #00ff88);
}

.platform-badge {
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.06);
  font-size: 12px;
  color: var(--muted);
}

.platform-badge.soon {
  color: #ffd28a;
  border-color: rgba(255, 210, 138, 0.5);
  background: rgba(255, 210, 138, 0.08);
}

.feature-card h3,
.platform-card h3 {
  margin-bottom: 10px;
}

.feature-card p,
.platform-card p {
  color: var(--muted);
  line-height: 1.5;
}

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.step {
  border-radius: 20px;
  padding: 24px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
}

.step-index {
  font-size: 13px;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 1px;
}

.step h3 {
  margin: 12px 0 10px;
}

.step p {
  color: var(--muted);
}

.faq {
  display: grid;
  gap: 14px;
}

.policy-text {
  color: var(--muted);
  line-height: 1.7;
  font-size: 16px;
  display: grid;
  gap: 12px;
}

.policy-text h3 {
  color: var(--text);
  margin-top: 12px;
  font-size: 18px;
}

details {
  border-radius: 16px;
  border: 1px solid var(--border);
  padding: 18px 20px;
  background: rgba(26, 31, 58, 0.5);
}

summary {
  cursor: pointer;
  font-weight: 600;
}

details p {
  color: var(--muted);
  margin-top: 12px;
  line-height: 1.5;
}

.cta-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 30px;
  border-radius: 22px;
  border: 1px solid var(--border);
  background: linear-gradient(120deg, rgba(0, 153, 204, 0.2), rgba(0, 255, 136, 0.15));
}

.cta-card p {
  color: var(--muted);
  margin-top: 10px;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 30px 0 50px;
  background: rgba(26, 34, 51, 0.85);
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  align-items: center;
  justify-content: space-between;
  color: var(--muted);
  font-size: 14px;
}

.footer-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-links a:hover {
  color: var(--text);
}

@media (max-width: 900px) {
  .nav {
    flex-wrap: wrap;
  }

  .nav-links {
    order: 3;
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
  }

  .nav-cta {
    margin-left: auto;
  }
}

@media (max-width: 720px) {
  .nav {
    gap: 16px;
  }

  .nav-links {
    gap: 12px;
  }

  .nav-cta {
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
  }

  .hero {
    padding: 60px 0 40px;
  }

  .hero-actions {
    width: 100%;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .preview-screen {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .nav-links {
    flex-direction: column;
    align-items: center;
  }

  .hero-card {
    padding: 20px;
  }

  .preview-footer {
    align-items: flex-start;
  }
}

@media (max-width: 720px) {
  .cta-card {
    flex-direction: column;
    align-items: flex-start;
  }

  .preview-footer {
    flex-direction: column;
    gap: 6px;
  }
}