:root {
  --bg: #FFFFFF;
  --bg-alt: #F6F7FB;
  --surface: #FFFFFF;
  --border: #E2E5F1;
  --border-strong: #C5CAE0;
  --text: #0F1729;
  --text-secondary: #2D3655;
  --text-muted: #6B7396;
  --accent: #4F46E5;
  --accent-dark: #3730A3;
  --accent-light: #EEF2FF;
  --accent-border: #C7D2FE;
  --gradient-start: #4F46E5;
  --gradient-mid: #6366F1;
  --gradient-end: #818CF8;
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;
  --radius-xl: 32px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 41, 0.04);
  --shadow: 0 2px 8px rgba(15, 23, 41, 0.06), 0 1px 2px rgba(15, 23, 41, 0.04);
  --shadow-md: 0 8px 24px rgba(15, 23, 41, 0.08), 0 2px 6px rgba(15, 23, 41, 0.04);
  --shadow-lg: 0 16px 48px rgba(15, 23, 41, 0.1);
  --font: 'DM Sans', system-ui, -apple-system, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1060px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Header ──────────────────────────────────── */

.site-header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-brand {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav-brand span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 6px;
}

.nav-links a {
  display: block;
  padding: 0.4rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: color 0.15s, background 0.15s;
}

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

/* ── Hero ─────────────────────────────────────── */

.hero {
  padding: 100px 0 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -120px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 500px;
  background: radial-gradient(ellipse at center, rgba(99, 102, 241, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--accent-light);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: 100px;
  border: 1px solid var(--accent-border);
  margin-bottom: 28px;
}

.hero-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero h1 {
  font-size: clamp(2.5rem, 5.5vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.08;
  margin-bottom: 20px;
  color: var(--text);
}

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

.hero-sub {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 480px;
  margin: 0 auto 44px;
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── Buttons ──────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0.7rem 1.5rem;
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-mid));
  color: #fff;
  box-shadow: 0 2px 12px rgba(79, 70, 229, 0.25);
}

.btn-primary:hover {
  box-shadow: 0 4px 20px rgba(79, 70, 229, 0.35);
  transform: translateY(-1px);
}

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

.btn-ghost:hover {
  background: var(--bg-alt);
  border-color: var(--text-muted);
}

/* ── Sections ─────────────────────────────────── */

.section {
  padding: 80px 0;
}

.section-alt {
  background: var(--bg-alt);
}

.section-header {
  text-align: center;
  margin-bottom: 52px;
}

.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 10px;
}

.section-sub {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 460px;
  margin: 0 auto;
}

/* ── Feature cards ────────────────────────────── */

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

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: box-shadow 0.2s, border-color 0.2s, transform 0.2s;
}

.feature-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
  transform: translateY(-2px);
}

.feature-icon {
  width: 48px;
  height: 48px;
  min-width: 48px;
  max-width: 48px;
  min-height: 48px;
  max-height: 48px;
  background: var(--accent-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  overflow: hidden;
  flex-shrink: 0;
}

.feature-icon svg {
  width: 22px !important;
  height: 22px !important;
  max-width: 22px;
  max-height: 22px;
  color: var(--accent);
  flex-shrink: 0;
}

.feature-card h3 {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ── App Store block ──────────────────────────── */

.app-store-block {
  text-align: center;
  padding: 72px 0;
}

.app-store-card {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  padding: 48px 56px;
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.04) 0%, rgba(129, 140, 248, 0.06) 100%);
  border: 1px solid var(--accent-border);
  border-radius: var(--radius-xl);
}

.app-store-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 32px rgba(79, 70, 229, 0.2);
}

.app-store-icon svg {
  width: 38px;
  height: 38px;
  color: #fff;
}

.app-store-icon-img {
  background: none;
  box-shadow: none;
  overflow: hidden;
}

.app-store-icon-img img {
  width: 80px;
  height: 80px;
  border-radius: 20px;
}

.app-store-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.app-store-card p {
  font-size: 0.95rem;
  color: var(--text-muted);
  max-width: 320px;
  line-height: 1.6;
}

/* ── Contact ──────────────────────────────────── */

.contact-section {
  text-align: center;
  padding: 64px 0 80px;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text);
  font-weight: 500;
  font-size: 0.95rem;
  transition: all 0.15s;
}

.contact-link:hover {
  border-color: var(--accent);
  background: var(--accent-light);
  color: var(--accent);
}

.contact-link svg {
  width: 18px;
  height: 18px;
  color: var(--accent);
}

/* ── Footer ───────────────────────────────────── */

.site-footer {
  background: #0D0D16;
  color: rgba(255, 255, 255, 0.5);
  padding: 36px 0 28px;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 32px;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  margin-bottom: 16px;
}

.footer-legal p {
  font-size: 0.82rem;
  line-height: 1.7;
}

.footer-legal a {
  color: rgba(255, 255, 255, 0.5);
  text-decoration: none;
}

.footer-legal a:hover { color: #fff; }

.footer-links {
  display: flex;
  gap: 20px;
  flex-shrink: 0;
}

.footer-links a {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.4);
  text-decoration: none;
  transition: color 0.15s;
  white-space: nowrap;
}

.footer-links a:hover {
  color: rgba(255, 255, 255, 0.8);
}

.footer-copy {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.25);
}

/* ── Legal / Sub-pages ────────────────────────── */

.page-hero {
  padding: 56px 0 40px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 48px;
}

.page-hero h1 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 8px;
}

.page-hero p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.page-content {
  max-width: 720px;
  padding-bottom: 80px;
}

.page-content h2 {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 36px 0 12px;
  color: var(--text);
}

.page-content p,
.page-content li {
  font-size: 0.925rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 10px;
}

.page-content ul {
  padding-left: 20px;
  margin-bottom: 16px;
}

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

.page-content a:hover {
  text-decoration: underline;
}

/* ── 404 ──────────────────────────────────────── */

.page-404 {
  text-align: center;
  padding: 120px 0 160px;
}

.page-404 h1 {
  font-size: 5rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
}

.page-404 p {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 32px;
}

/* ── Support page ─────────────────────────────── */

.support-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 32px;
  margin-bottom: 48px;
}

.support-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.support-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.support-card p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ── Responsive ───────────────────────────────── */

@media (max-width: 768px) {
  .features-grid {
    grid-template-columns: 1fr;
  }

  .hero { padding: 64px 0 56px; }
  .hero h1 { font-size: 2.2rem; }
  .hero-sub { font-size: 1rem; }

  .section { padding: 56px 0; }

  .nav-links { display: none; }

  .footer-top {
    flex-direction: column;
    gap: 16px;
  }

  .app-store-card {
    padding: 36px 28px;
  }

  .support-cards {
    grid-template-columns: 1fr;
  }

  .page-hero h1 { font-size: 1.6rem; }
}