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

:root {
  --bg:      #F7F9FC;
  --surface: #FFFFFF;
  --primary: #1B2A4A;
  --accent:  #4F8EF7;
  --muted:   #7A8EAD;
  --border:  #E4EAF2;
  --success: #22C55E;
  --danger:  #EF4444;
  --radius:  12px;
  --max-width: 1100px;
}

html, body {
  min-height: 100%;
  background: var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--primary);
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}

/* ── Layout ──────────────────────────────────────────── */

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Navigation ──────────────────────────────────────── */

.nav {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

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

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  transition: color 0.2s;
}

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

.nav-cta {
  background: var(--accent);
  color: #fff !important;
  padding: 8px 20px;
  border-radius: 8px;
  font-weight: 600;
  transition: background 0.2s;
}

.nav-cta:hover {
  background: #3B7AE0;
}

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

.hero {
  text-align: center;
  padding: 80px 0 60px;
}

.hero h1 {
  font-size: clamp(28px, 5vw + 1rem, 48px);
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1.15;
  margin-bottom: 20px;
}

.hero h1 span {
  color: var(--accent);
}

.hero p {
  font-size: clamp(15px, 1.5vw + 0.5rem, 18px);
  color: var(--muted);
  max-width: 700px;
  margin: 0 auto 36px;
}

.btn-primary {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 14px 36px;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.2s, transform 0.1s;
}

.btn-primary:hover {
  background: #3B7AE0;
  transform: translateY(-1px);
}

.btn-secondary {
  display: inline-block;
  background: transparent;
  color: var(--accent);
  padding: 14px 36px;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  border: 2px solid var(--accent);
  transition: background 0.2s;
}

.btn-secondary:hover {
  background: rgba(79, 142, 247, 0.08);
}

/* ── Section ─────────────────────────────────────────── */

.section {
  padding: 64px 0;
}

.section-title {
  font-size: clamp(24px, 3vw + 0.5rem, 32px);
  font-weight: 700;
  text-align: center;
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 16px;
  color: var(--muted);
  text-align: center;
  max-width: 520px;
  margin: 0 auto 48px;
}

/* ── Cards Grid ──────────────────────────────────────── */

.grid {
  display: grid;
  gap: 24px;
}

.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ── Hamburger Toggle ───────────────────────────────── */

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
  padding: 0;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: transform 0.2s, opacity 0.2s;
}

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

@media (max-width: 1024px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  /* Nav */
  .nav-toggle { display: flex; }
  .nav-links {
    display: none !important;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 8px 24px 16px;
    gap: 0;
    box-shadow: 0 4px 16px rgba(27, 42, 74, 0.08);
    z-index: 200;
  }
  .nav-links.open { display: flex !important; }
  .nav .container { position: relative; }
  .nav-links a {
    display: flex;
    align-items: center;
    min-height: 44px;
    padding: 8px 0;
    font-size: 16px;
  }
  .nav-cta {
    text-align: center;
    margin-top: 8px;
    display: block;
    width: 100%;
    padding: 12px 20px;
    border-radius: 8px;
  }

  /* Grid */
  .grid-3, .grid-4 { grid-template-columns: 1fr; }

  /* Hero */
  .hero { padding: 48px 0 36px; }

  /* Buttons — stack vertically on mobile */
  .hero .container > .btn-primary,
  .hero .container > .btn-secondary,
  .section .container > .btn-primary,
  .section .container > .btn-secondary {
    display: block;
    width: 100%;
    max-width: 300px;
    margin: 0 auto 12px !important;
    text-align: center;
  }

  /* Section */
  .section { padding: 40px 0; }
  .card { padding: 24px 20px; }
  .pricing-card { padding: 28px 20px; }

  /* Touch targets */
  .footer a {
    display: inline-block;
    padding: 4px 8px;
    min-height: 44px;
    line-height: 36px;
  }
  .pricing-features li { padding: 8px 0; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero { padding: 32px 0 24px; }
  .section { padding: 32px 0; }
  .card { padding: 20px 16px; }
  .pricing-card { padding: 24px 16px; }
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: box-shadow 0.2s;
}

.card:hover {
  box-shadow: 0 4px 24px rgba(27, 42, 74, 0.08);
}

.card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

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

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, #EEF4FF, #D8E8FF);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 22px;
}

/* ── Pricing ─────────────────────────────────────────── */

.pricing-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  position: relative;
  display: flex;
  flex-direction: column;
}

.pricing-card .pricing-features {
  flex: 1;
}

.pricing-card > a {
  margin-top: auto;
}

.pricing-card.featured {
  border-color: var(--accent);
  box-shadow: 0 4px 24px rgba(79, 142, 247, 0.15);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: #fff;
  padding: 4px 16px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.pricing-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
}

.pricing-price {
  font-size: clamp(28px, 4vw + 0.5rem, 40px);
  font-weight: 800;
  color: var(--primary);
  margin: 16px 0 4px;
}

.pricing-price span {
  font-size: 16px;
  font-weight: 500;
  color: var(--muted);
}

.pricing-features {
  list-style: none;
  margin: 24px 0;
  text-align: left;
}

.pricing-features li {
  padding: 6px 0;
  font-size: 14px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.pricing-features li::before {
  content: "\2713";
  color: var(--success);
  font-weight: 700;
  font-size: 14px;
}

/* ── About Layout ───────────────────────────────────── */

.about-layout {
  max-width: 1000px;
  display: flex;
  gap: 48px;
  align-items: flex-start;
}

@media (max-width: 768px) {
  .about-layout {
    flex-direction: column;
    align-items: center;
    gap: 24px;
  }
  .about-layout > div:first-child {
    position: static !important;
  }
  .about-layout .card {
    padding: 28px 20px;
  }
}

/* ── Table Overflow ─────────────────────────────────── */

.card table {
  display: block;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

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

.footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
}

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

.footer a:hover {
  text-decoration: underline;
}