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

:root {
  --blue-950: #0c1a3a;
  --blue-900: #1e3a6e;
  --blue-700: #1d4ed8;
  --blue-600: #2563eb;
  --blue-100: #dbeafe;
  --blue-50:  #eff6ff;
  --slate-900: #0f172a;
  --slate-700: #334155;
  --slate-500: #64748b;
  --slate-300: #cbd5e1;
  --slate-100: #f1f5f9;
  --slate-50:  #f8fafc;
  --white: #ffffff;
  --radius: 12px;
  --font: 'Inter', system-ui, -apple-system, sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--slate-900);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Layout ── */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s, transform 0.1s;
  border: none;
}
.btn:active { transform: scale(0.98); }

.btn-sm  { padding: 8px 16px;  font-size: 14px; }
.btn-lg  { padding: 14px 28px; font-size: 16px; }

.btn-primary {
  background: var(--blue-600);
  color: var(--white);
}
.btn-primary:hover { background: var(--blue-700); }

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255,255,255,0.4);
}
.btn-outline:hover { border-color: rgba(255,255,255,0.8); }

/* ── Nav ── */
.nav {
  background: var(--blue-950);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(255,255,255,0.07);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.logo {
  font-size: 20px;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.5px;
}
.nav .btn-sm {
  background: var(--blue-600);
  color: var(--white);
}
.nav .btn-sm:hover { background: var(--blue-700); }

/* ── Hero ── */
.hero {
  background: var(--blue-950);
  color: var(--white);
  padding: 96px 0 104px;
  text-align: center;
}
.hero-inner { max-width: 720px; margin: 0 auto; padding: 0 24px; }

.badge {
  display: inline-block;
  background: rgba(37, 99, 235, 0.3);
  color: var(--blue-100);
  border: 1px solid rgba(96, 165, 250, 0.3);
  border-radius: 99px;
  padding: 4px 14px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(48px, 8vw, 72px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -2px;
  margin-bottom: 24px;
}

.hero-sub {
  font-size: 18px;
  color: rgba(255,255,255,0.72);
  max-width: 560px;
  margin: 0 auto 40px;
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.hero-note {
  font-size: 13px;
  color: rgba(255,255,255,0.45);
}

/* ── Features ── */
.features {
  padding: 96px 0;
  background: var(--white);
}

.section-title {
  font-size: clamp(24px, 4vw, 32px);
  font-weight: 700;
  letter-spacing: -0.5px;
  text-align: center;
  margin-bottom: 56px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--slate-50);
  border: 1px solid var(--slate-100);
  border-radius: var(--radius);
  padding: 28px;
}

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

.feature-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--slate-900);
}

.feature-card p {
  font-size: 15px;
  color: var(--slate-500);
  line-height: 1.65;
}

/* ── Regs ── */
.regs {
  background: var(--slate-100);
  padding: 72px 0;
}

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

.regs h2 {
  font-size: clamp(22px, 3.5vw, 28px);
  font-weight: 700;
  margin-bottom: 36px;
  letter-spacing: -0.3px;
}

.reg-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

.reg-card {
  background: var(--white);
  border: 1px solid var(--slate-300);
  border-radius: var(--radius);
  padding: 20px 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  min-width: 160px;
}

.reg-label {
  font-size: 20px;
  font-weight: 800;
  color: var(--blue-950);
  letter-spacing: -0.5px;
}

.reg-desc {
  font-size: 13px;
  color: var(--slate-500);
}

/* ── CTA ── */
.cta {
  background: var(--blue-950);
  color: var(--white);
  padding: 96px 0;
  text-align: center;
}

.cta-inner { max-width: 560px; margin: 0 auto; padding: 0 24px; }

.cta h2 {
  font-size: clamp(28px, 5vw, 40px);
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 12px;
}

.cta p {
  font-size: 16px;
  color: rgba(255,255,255,0.6);
  margin-bottom: 36px;
}

/* ── Footer ── */
.footer {
  background: var(--slate-900);
  color: var(--slate-500);
  padding: 48px 0;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  text-align: center;
}

.footer .logo {
  font-size: 18px;
  color: rgba(255,255,255,0.5);
}

.footer-note {
  font-size: 13px;
  max-width: 560px;
  line-height: 1.6;
}

.footer-copy {
  font-size: 13px;
}

/* ── Responsive ── */
@media (max-width: 600px) {
  .hero { padding: 72px 0 80px; }
  .features { padding: 64px 0; }
  .cta { padding: 72px 0; }
  .feature-grid { grid-template-columns: 1fr; }
  .reg-grid { flex-direction: column; align-items: center; }
  .reg-card { width: 100%; max-width: 280px; }
}