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

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --text: #111827;
  --muted: #64748b;
  --surface: #ffffff;
  --soft: #f8fafc;
  --border: #e2e8f0;
  --dark: #0f172a;
  --success: #16a34a;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--surface);
  line-height: 1.6;
}

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

.container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid rgba(226, 232, 240, 0.9);
  backdrop-filter: blur(12px);
}

.nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.brand-mark {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  color: white;
  background: var(--primary);
  font-weight: 900;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 0.95rem;
  font-weight: 600;
}

.nav-links a:not(.btn):hover {
  color: var(--primary);
}

.menu-button {
  display: none;
  border: 0;
  background: transparent;
  font-size: 1.5rem;
  cursor: pointer;
}

.btn {
  min-height: 46px;
  padding: 0 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  border: 1px solid transparent;
  font-weight: 750;
  transition: 0.2s ease;
  cursor: pointer;
}

.btn-primary {
  color: white;
  background: var(--primary);
}

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

.btn-light {
  color: var(--text);
  background: white;
  border-color: var(--border);
}

.btn-outline,
.btn-outline-dark {
  border-color: var(--border);
  background: white;
}

.btn-outline:hover,
.btn-outline-dark:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.hero {
  padding: 92px 0 88px;
  background:
    radial-gradient(circle at 85% 20%, rgba(37, 99, 235, 0.12), transparent 32%),
    linear-gradient(180deg, #f8fbff 0%, #ffffff 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  align-items: center;
  gap: 70px;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 14px;
  color: var(--primary);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 700px;
  font-size: clamp(2.8rem, 6vw, 5.2rem);
  line-height: 0.98;
  letter-spacing: -0.06em;
  margin-bottom: 24px;
}

.hero p {
  max-width: 610px;
  color: var(--muted);
  font-size: 1.12rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 24px;
  color: #475569;
  font-size: 0.9rem;
  font-weight: 650;
}

.hero-card {
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: white;
  box-shadow: 0 24px 70px rgba(15, 23, 42, 0.12);
}

.mockup-header {
  height: 42px;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 0 10px;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 700;
}

.dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #94a3b8;
}

.mockup-body {
  padding: 18px;
  border-radius: 14px;
  background: var(--soft);
}

.mockup-banner {
  padding: 28px 18px;
  margin-bottom: 14px;
  border-radius: 12px;
  color: white;
  background: linear-gradient(135deg, #1d4ed8, #2563eb);
  font-weight: 800;
}

.product-row {
  display: grid;
  grid-template-columns: 54px 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 12px;
  margin-bottom: 10px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: white;
}

.product-image {
  width: 54px;
  height: 54px;
  border-radius: 10px;
  background: #dbeafe;
}

.product-image.second {
  background: #e2e8f0;
}

.product-row strong,
.product-row small {
  display: block;
}

.product-row small {
  color: var(--muted);
  font-size: 0.78rem;
}

.product-row b {
  font-size: 0.9rem;
}

.mockup-button {
  width: 100%;
  min-height: 44px;
  margin-top: 4px;
  border: 0;
  border-radius: 10px;
  color: white;
  background: var(--success);
  font-weight: 800;
}

.section {
  padding: 92px 0;
}

.section-heading {
  max-width: 680px;
  margin: 0 auto 46px;
  text-align: center;
}

.section-heading h2 {
  margin-bottom: 10px;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.05;
  letter-spacing: -0.045em;
}

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

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

.step {
  padding: 30px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: white;
}

.step-number {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  margin-bottom: 20px;
  border-radius: 50%;
  color: white;
  background: var(--primary);
  font-weight: 800;
}

.step h3 {
  margin-bottom: 8px;
  font-size: 1.15rem;
}

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

.plans-section {
  background: var(--soft);
}

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

.plan-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 32px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: white;
}

.plan-card.featured {
  border-color: var(--primary);
  box-shadow: 0 18px 50px rgba(37, 99, 235, 0.14);
}

.plan-badge {
  position: absolute;
  top: 18px;
  right: 18px;
  padding: 5px 9px;
  border-radius: 999px;
  color: var(--primary-dark);
  background: #dbeafe;
  font-size: 0.7rem;
  font-weight: 800;
}

.plan-card h3 {
  font-size: 1.4rem;
}

.plan-description {
  min-height: 48px;
  color: var(--muted);
  font-size: 0.9rem;
}

.price {
  margin: 18px 0 4px;
  font-size: 2.35rem;
  font-weight: 850;
  letter-spacing: -0.05em;
}

.price small {
  margin-right: 4px;
  font-size: 1rem;
}

.price span {
  margin-left: 4px;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0;
}

.promo {
  min-height: 46px;
  color: var(--success);
  font-size: 0.82rem;
  font-weight: 750;
}

.plan-card ul {
  display: grid;
  gap: 11px;
  margin: 22px 0;
  padding: 0;
  list-style: none;
  color: #475569;
  font-size: 0.92rem;
}

.plan-card li::before {
  content: "✓";
  margin-right: 9px;
  color: var(--success);
  font-weight: 900;
}

.implementation {
  margin-top: auto;
  margin-bottom: 20px;
  color: var(--muted);
  font-size: 0.82rem;
}

.implementation strong {
  color: var(--text);
}

.cta-section {
  padding: 74px 0;
}

.cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  padding: 42px;
  border-radius: 22px;
  color: white;
  background: var(--dark);
}

.cta .eyebrow {
  color: #93c5fd;
}

.cta h2 {
  margin-bottom: 8px;
  font-size: clamp(1.9rem, 4vw, 2.7rem);
  line-height: 1.05;
}

.cta p {
  color: #cbd5e1;
}

.footer {
  padding: 34px 0;
  border-top: 1px solid var(--border);
  background: white;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  color: var(--muted);
  font-size: 0.82rem;
}

.footer strong {
  color: var(--text);
}

@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .steps,
  .plans {
    grid-template-columns: 1fr;
  }

  .plan-description {
    min-height: auto;
  }

  .nav-links {
    display: none;
  }

  .menu-button {
    display: block;
  }

  .cta {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 600px) {
  .container {
    width: min(100% - 28px, 1120px);
  }

  .hero {
    padding: 62px 0;
  }

  .section {
    padding: 68px 0;
  }

  .hero h1 {
    font-size: 3rem;
  }

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

  .hero-points {
    display: grid;
    gap: 8px;
  }

  .footer-content {
    flex-direction: column;
  }

  .cta {
    padding: 30px 24px;
  }
}


@media (max-width: 900px) {
  .nav-links.mobile-open {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 14px 20px 20px;
    border-bottom: 1px solid var(--border);
    background: white;
    box-shadow: 0 16px 30px rgba(15, 23, 42, 0.08);
  }

  .nav-links.mobile-open a {
    padding: 12px 0;
  }

  .nav-links.mobile-open .btn {
    width: 100%;
  }
}