:root {
  --bg: #ffffff;
  --bg-soft: #f8fafc;
  --bg-dark: #0f172a;
  --surface: #ffffff;
  --text: #122033;
  --text-soft: #475569;
  --line: #dbe3ec;
  --primary: #1d4ed8;
  --primary-dark: #163caa;
  --accent: #0f766e;
  --radius: 18px;
  --shadow: 0 14px 40px rgba(15, 23, 42, 0.10);
  --container: 1180px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
}

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

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

.container {
  width: min(var(--container), calc(100% - 32px));
  margin: 0 auto;
}

.narrow {
  width: min(820px, 100%);
}

.section {
  padding: 88px 0;
}

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

.section-dark {
  background: linear-gradient(135deg, #0f172a 0%, #162a4a 100%);
  color: #fff;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: #000;
  color: #fff;
  padding: 10px 14px;
  z-index: 999;
}

.skip-link:focus {
  left: 12px;
  top: 12px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(219, 227, 236, 0.85);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  gap: 24px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
}

.logo-mark {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  color: #fff;
  font-size: 0.95rem;
}

.logo-text {
  font-size: 1.05rem;
  letter-spacing: 0.01em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.main-nav a {
  color: var(--text-soft);
  font-weight: 600;
}

.main-nav a:hover,
.main-nav a:focus {
  color: var(--text);
}

.main-nav .nav-cta {
  padding: 12px 18px;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
}

.hero {
  padding: 70px 0 52px;
  background:
    radial-gradient(circle at top left, rgba(29, 78, 216, 0.10), transparent 35%),
    radial-gradient(circle at bottom right, rgba(15, 118, 110, 0.12), transparent 30%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 44px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 10px;
  font-size: 0.92rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.eyebrow-light {
  color: #bfdbfe;
}

.hero h1 {
  margin: 0 0 18px;
  font-size: clamp(2.2rem, 4vw, 4.4rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.hero-text {
  margin: 0 0 28px;
  font-size: 1.08rem;
  color: var(--text-soft);
  max-width: 58ch;
}

.hero-actions,
.section-cta,
.cta-panel-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 0.2s ease, opacity 0.2s ease, background 0.2s ease;
}

.btn:hover,
.btn:focus {
  transform: translateY(-1px);
}

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

.btn-primary:hover,
.btn-primary:focus {
  background: var(--primary-dark);
}

.btn-secondary {
  background: #fff;
  color: var(--text);
  border: 1px solid var(--line);
}

.btn-light {
  background: #fff;
  color: var(--bg-dark);
}

.btn-outline-light {
  border: 1px solid rgba(255, 255, 255, 0.35);
  color: #fff;
  background: transparent;
}

.hero-badges {
  list-style: none;
  padding: 0;
  margin: 26px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-badges li {
  padding: 10px 14px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--line);
  color: var(--text-soft);
  font-size: 0.95rem;
  font-weight: 600;
}

.hero-visual {
  display: grid;
  grid-template-columns: 1.3fr 0.9fr;
  grid-template-rows: 1fr 1fr;
  gap: 18px;
}

.hero-card {
  overflow: hidden;
  border-radius: 26px;
  box-shadow: var(--shadow);
  background: #fff;
}

.hero-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-card-main {
  grid-row: 1 / span 2;
  min-height: 540px;
}

.hero-card-small {
  min-height: 260px;
}

.section-head {
  margin-bottom: 28px;
}

.section-head h2,
.intro h2,
.section-dark h2,
.footer-title {
  margin: 0 0 12px;
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.section-head p,
.intro p,
.info-box p,
.card p,
.faq-content p,
.site-footer p {
  color: var(--text-soft);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.card-body {
  padding: 22px 20px 24px;
}

.card h3,
.info-box h3 {
  margin: 0 0 8px;
  font-size: 1.24rem;
  line-height: 1.2;
}

.split-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.info-box {
  padding: 28px;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.cta-panel {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 28px;
  align-items: center;
}

.cta-panel p {
  color: rgba(255, 255, 255, 0.82);
}

.faq-list {
  display: grid;
  gap: 16px;
}

.faq-list details {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px 20px;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 700;
  list-style: none;
  position: relative;
  padding-right: 28px;
}

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

.faq-list summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 0;
  font-size: 1.35rem;
  line-height: 1;
  color: var(--primary);
}

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

.faq-content {
  padding-top: 10px;
}

.site-footer {
  padding: 34px 0 46px;
  background: #0b1324;
  color: #e5edf7;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: start;
}

.footer-title {
  font-size: 1.2rem;
  margin-bottom: 8px;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}

.footer-links a {
  color: #e5edf7;
}

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

@media (max-width: 1080px) {
  .hero-grid,
  .cta-panel,
  .cards-grid {
    grid-template-columns: 1fr 1fr;
  }

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

  .hero-card-main {
    grid-column: 1 / -1;
    grid-row: auto;
    min-height: 360px;
  }
}

@media (max-width: 860px) {
  .header-inner,
  .main-nav,
  .hero-grid,
  .cards-grid,
  .split-grid,
  .cta-panel,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .header-inner {
    display: block;
    padding: 16px 0;
  }

  .main-nav {
    display: flex;
    margin-top: 14px;
    gap: 12px;
  }

  .hero {
    padding-top: 44px;
  }

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

  .hero-card-small {
    min-height: 220px;
  }

  .cards-grid {
    display: grid;
  }

  .split-grid {
    display: grid;
  }
}

@media (max-width: 560px) {
  .section {
    padding: 68px 0;
  }

  .container {
    width: min(100% - 20px, var(--container));
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .btn {
    width: 100%;
  }

  .hero-actions,
  .cta-panel-actions,
  .section-cta {
    align-items: stretch;
  }

  .hero-badges {
    display: grid;
  }
}