:root {
  --blue-dark: #16307a;
  --blue: #3b6fe0;
  --blue-light: #e7eefb;
  --blue-lighter: #f4f7fd;
  --red: #ef4444;
  --text: #16213e;
  --text-muted: #5b6784;
  --border: #d7e2f7;
  --white: #ffffff;
  --radius: 14px;
  --shadow: 0 12px 30px rgba(22, 48, 122, 0.08);
  --max-width: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.6;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3 {
  line-height: 1.25;
  margin: 0 0 16px;
  font-weight: 700;
  color: var(--blue-dark);
}

h1 {
  font-size: clamp(2rem, 4vw, 3rem);
}

h2 {
  font-size: clamp(1.5rem, 3vw, 2.1rem);
}

p {
  margin: 0 0 16px;
  color: var(--text-muted);
}

.eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 26px;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
  font-size: 1rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--red);
  color: var(--white);
  box-shadow: 0 10px 24px rgba(239, 68, 68, 0.28);
}

.btn-secondary {
  background: var(--white);
  color: var(--blue-dark);
  border-color: var(--border);
}

.btn-block {
  width: 100%;
}

/* header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.15rem;
  text-decoration: none;
  color: var(--blue-dark);
}

.brand svg {
  width: 34px;
  height: 34px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.main-nav a:not(.btn) {
  text-decoration: none;
  color: var(--text);
  font-weight: 500;
  font-size: 0.95rem;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 10px;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  display: block;
  width: 20px;
  height: 2px;
  background: var(--blue-dark);
  position: relative;
}

.nav-toggle span::before {
  position: absolute;
  top: -6px;
}

.nav-toggle span::after {
  position: absolute;
  top: 6px;
}

/* hero */
.hero {
  padding: 72px 0;
  background: linear-gradient(180deg, var(--blue-lighter) 0%, var(--white) 100%);
  overflow: hidden;
}

.hero .container {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero-copy p.lead {
  font-size: 1.15rem;
}

.hero-cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin: 28px 0;
}

.hero-trust {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.hero-trust li {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-trust {
  padding: 0;
  margin: 0;
}

.hero-trust svg {
  width: 18px;
  height: 18px;
  flex: none;
}

/* sections */
section {
  padding: 88px 0;
}

.section-head {
  max-width: 640px;
  margin: 0 auto 48px;
  text-align: center;
}

.section-head p {
  font-size: 1.05rem;
}

/* features */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 22px;
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--blue-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.feature-icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--blue-dark);
}

.feature-card h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.95rem;
  margin-bottom: 0;
}

.feature-card.accent .feature-icon {
  background: rgba(239, 68, 68, 0.12);
}

.feature-card.accent .feature-icon svg {
  stroke: var(--red);
}

/* how it works */
.how {
  background: var(--blue-lighter);
}

.how-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  counter-reset: step;
}

.how-step {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px 24px;
  border: 1px solid var(--border);
  position: relative;
}

.how-step::before {
  counter-increment: step;
  content: counter(step);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--blue-dark);
  color: var(--white);
  font-weight: 700;
  margin-bottom: 16px;
}

/* pricing */
.pricing-section {
  background: #0f1b3d;
  border-radius: 32px;
  margin: 0 24px;
}

.pricing-section .section-head h2.on-dark {
  color: var(--white);
}

.pricing-section .section-head p.on-dark {
  color: #aab6d9;
}

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

.pricing-grid-4 {
  grid-template-columns: repeat(3, 1fr) 1.05fr;
}

.price-card {
  background: #17234a;
  border: 1px solid #2a3766;
  border-radius: var(--radius);
  padding: 30px 24px;
  display: flex;
  flex-direction: column;
  position: relative;
}

.price-card.featured {
  border-color: var(--red);
  box-shadow: 0 16px 34px rgba(0, 0, 0, 0.35);
  transform: translateY(-8px);
}

.price-card.enterprise {
  background: #1b1710;
  border-color: #4a3b1a;
}

.price-badge {
  position: absolute;
  top: -14px;
  left: 24px;
  background: var(--red);
  color: var(--white);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 999px;
}

.price-badge.badge-enterprise {
  background: #f2b705;
  color: #3a2c00;
}

.price-name {
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #aab6d9;
  margin-bottom: 4px;
}

.price-amount {
  font-size: 2.6rem;
  font-weight: 700;
  color: var(--white);
  margin: 8px 0 4px;
}

.price-amount .unit {
  font-size: 1.1rem;
  font-weight: 600;
  color: #aab6d9;
  margin-left: 2px;
}

.price-amount .period {
  font-size: 0.95rem;
  font-weight: 500;
  color: #7684ab;
}

.price-amount-custom {
  font-size: 1.5rem;
  color: #f2b705;
}

.price-desc {
  font-size: 0.9rem;
  color: #aab6d9;
  margin-bottom: 20px;
}

.price-features {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
  flex: 1;
}

.price-features li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 0.88rem;
  padding: 8px 0;
  border-top: 1px solid #2a3766;
}

.price-features li:first-child {
  border-top: none;
}

.price-features li.has {
  color: #e7ecfa;
}

.price-features li.no {
  color: #55618c;
}

.price-features li.no::before {
  content: "\2014";
  color: #3d4770;
  width: 18px;
  flex: none;
}

.price-features svg {
  width: 18px;
  height: 18px;
  flex: none;
  margin-top: 2px;
  stroke: var(--red);
}

.price-fineprint {
  text-align: center;
  font-size: 0.8rem;
  color: #7684ab;
  margin: 10px 0 0;
}

.pricing-note {
  text-align: center;
  font-size: 0.9rem;
  margin-top: 32px;
}

.pricing-note.on-dark {
  color: #7684ab;
}

/* faq */
.faq-list details {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px 22px;
  margin-bottom: 14px;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--blue-dark);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  content: "+";
  font-size: 1.4rem;
  color: var(--red);
  margin-left: 12px;
}

.faq-list details[open] summary::after {
  content: "\2212";
}

.faq-list p {
  margin-top: 14px;
  margin-bottom: 0;
  font-size: 0.95rem;
}

/* final cta */
.final-cta {
  background: linear-gradient(135deg, var(--blue) 0%, var(--blue-dark) 100%);
  border-radius: 24px;
  margin: 0 24px;
  padding: 64px 32px;
  text-align: center;
}

.final-cta h2,
.final-cta p {
  color: var(--white);
}

.final-cta .container {
  max-width: 640px;
}

/* footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 48px 0 28px;
  background: var(--blue-lighter);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(2, 1fr);
  gap: 32px;
  margin-bottom: 32px;
}

.footer-grid h4 {
  font-size: 0.95rem;
  color: var(--blue-dark);
  margin-bottom: 14px;
}

.footer-grid ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-grid li {
  margin-bottom: 10px;
}

.footer-grid a {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.92rem;
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* responsive */
@media (max-width: 960px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .price-card.featured {
    transform: none;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 760px) {
  .nav-toggle {
    display: flex;
  }

  .main-nav {
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 12px 24px 20px;
    display: none;
  }

  .main-nav.open {
    display: flex;
  }

  .main-nav a:not(.btn) {
    padding: 12px 0;
    width: 100%;
    border-bottom: 1px solid var(--border);
  }

  .header-actions .btn-secondary {
    display: none;
  }

  .hero .container {
    grid-template-columns: 1fr;
  }

  .hero-image {
    order: -1;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  section {
    padding: 56px 0;
  }

  .final-cta {
    margin: 0 16px;
    padding: 48px 20px;
  }
}