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

:root {
  --bg:       #060a12;
  --surface:  #0c1220;
  --surface2: #111827;
  --border:   #1e293b;
  --text:     #e2e8f0;
  --text-muted: #64748b;
  --text-dim: #94a3b8;
  --accent:   #3b82f6;
  --accent2:  #6366f1;
  --radius:   10px;
}

[data-theme="light"] {
  --bg:       #f8fafc;
  --surface:  #ffffff;
  --surface2: #f1f5f9;
  --border:   #e2e8f0;
  --text:     #0f172a;
  --text-muted: #64748b;
  --text-dim: #475569;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  transition: background .2s, color .2s;
}

/* ── Nav ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  font-size: 17px;
}

.nav-logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, #3b82f6, #6366f1);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
}

.nav-right { display: flex; align-items: center; gap: 12px; }

.btn-theme-land {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 7px 10px;
  cursor: pointer;
  font-size: 15px;
  transition: all .15s;
}
.btn-theme-land:hover { border-color: var(--accent); }

.nav-cta {
  background: var(--accent);
  color: #fff;
  padding: 8px 18px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  transition: background .15s;
}
.nav-cta:hover { background: #2563eb; }

/* ── Hero ── */
.hero {
  max-width: 780px;
  margin: 0 auto;
  padding: 90px 24px 80px;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  background: linear-gradient(135deg, #3b82f622, #6366f122);
  border: 1px solid #3b82f644;
  color: #93c5fd;
  padding: 6px 16px;
  border-radius: 99px;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 28px;
}

[data-theme="light"] .hero-badge {
  background: #eff6ff;
  border-color: #bfdbfe;
  color: #3b82f6;
}

.hero-title {
  font-size: clamp(2.4rem, 6vw, 3.8rem);
  font-weight: 800;
  letter-spacing: -1.5px;
  line-height: 1.15;
  margin-bottom: 20px;
}

.gradient-text {
  background: linear-gradient(135deg, #3b82f6, #8b5cf6, #ec4899);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--text-dim);
  margin-bottom: 36px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.btn-hero-primary {
  background: var(--accent);
  color: #fff;
  padding: 14px 28px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 700;
  font-size: 15px;
  transition: all .15s;
  box-shadow: 0 4px 20px #3b82f640;
}
.btn-hero-primary:hover { background: #2563eb; transform: translateY(-1px); }
.btn-hero-primary.btn-lg { padding: 16px 36px; font-size: 16px; }

.btn-hero-ghost {
  background: var(--surface2);
  color: var(--text-dim);
  padding: 14px 28px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 500;
  font-size: 15px;
  border: 1px solid var(--border);
  transition: all .15s;
}
.btn-hero-ghost:hover { border-color: var(--accent); color: var(--text); }

/* Demo pill */
.demo-pill {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 99px;
  padding: 10px 20px;
  font-size: 13px;
}

.demo-addr {
  font-family: monospace;
  color: var(--accent);
}

.demo-copied {
  background: var(--surface2);
  color: var(--text-dim);
  padding: 3px 12px;
  border-radius: 99px;
  cursor: pointer;
  font-size: 12px;
  transition: all .15s;
  border: 1px solid var(--border);
}
.demo-copied:hover { border-color: var(--accent); color: var(--accent); }

/* ── Sections common ── */
.section-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 10px;
}

.section-title {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -.5px;
  margin-bottom: 48px;
}

/* ── Features ── */
.features {
  max-width: 1100px;
  margin: 0 auto;
  padding: 80px 24px;
  text-align: center;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  text-align: left;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px;
  transition: border-color .15s, transform .15s;
}
.feature-card:hover { border-color: var(--accent); transform: translateY(-2px); }

.feature-icon { font-size: 28px; margin-bottom: 14px; }

.feature-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.6;
}

/* ── How it works ── */
.how {
  max-width: 1100px;
  margin: 0 auto;
  padding: 80px 24px;
  text-align: center;
  border-top: 1px solid var(--border);
}

.steps {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
}

.step {
  flex: 1;
  min-width: 200px;
  max-width: 280px;
  padding: 0 20px;
}

.step-num {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin: 0 auto 16px;
}

.step h3 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.step p  { font-size: 14px; color: var(--text-dim); line-height: 1.6; }

.step-arrow {
  font-size: 24px;
  color: var(--text-muted);
  align-self: center;
  padding: 0 8px;
  flex-shrink: 0;
}

/* ── Telegram section ── */
.tg-section {
  padding: 80px 24px;
  border-top: 1px solid var(--border);
}

.tg-card {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
  background: linear-gradient(135deg, #3b82f610, #6366f110);
  border: 1px solid #3b82f630;
  border-radius: 20px;
  padding: 48px 32px;
}

.tg-icon { font-size: 48px; margin-bottom: 16px; }

.tg-card h2 {
  font-size: 1.7rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.tg-card p {
  color: var(--text-dim);
  margin-bottom: 24px;
  font-size: 15px;
}

.tg-features {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.tg-features span {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: 99px;
  font-size: 13px;
  color: var(--text-dim);
}

/* ── CTA ── */
.cta {
  text-align: center;
  padding: 80px 24px;
  border-top: 1px solid var(--border);
}

.cta h2 {
  font-size: clamp(1.4rem, 4vw, 2rem);
  font-weight: 700;
  margin-bottom: 10px;
}

.cta p { color: var(--text-dim); margin-bottom: 28px; }

/* ── Footer ── */
.footer {
  border-top: 1px solid var(--border);
  padding: 28px 24px;
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 15px;
}

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

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13px;
  transition: color .15s;
}
.footer-links a:hover { color: var(--text); }

.footer-copy {
  font-size: 12px;
  color: var(--text-muted);
}
.footer-copy a { color: var(--accent); text-decoration: none; }

@media (max-width: 640px) {
  .step-arrow { display: none; }
  .steps { flex-direction: column; align-items: center; gap: 32px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}