:root {
  --navy: #102a43;
  --deep-blue: #173f6f;
  --blue: #1f5f99;
  --soft-blue: #eaf3fb;
  --light-bg: #f6f8fb;
  --text: #1f2933;
  --muted: #5f6c7b;
  --white: #ffffff;
  --border: #d8e2ec;
  --accent: #d7a94b;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background: var(--light-bg);
  line-height: 1.6;
}

a {
  color: var(--deep-blue);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Header */

.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 8px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Logo */

.site-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.site-logo img {
  display: block;
  height: 37px;
  width: auto;
  max-width: 304px;
}

.site-logo:hover {
  text-decoration: none;
}

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

.main-nav a {
  color: var(--navy);
  font-weight: 700;
  font-size: 0.95rem;
}

/* Hero */

.hero {
  position: relative;
  min-height: 560px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background:
    linear-gradient(
      90deg,
      rgba(16, 42, 67, 0.92) 0%,
      rgba(16, 42, 67, 0.72) 42%,
      rgba(16, 42, 67, 0.28) 100%
    ),
    url("/images/index-images/hero.jpg") center/cover no-repeat;
}

.hero::after {
  content: none;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(
      90deg,
      rgba(16, 42, 67, 0.75) 0%,
      rgba(16, 42, 67, 0.45) 45%,
      rgba(16, 42, 67, 0.12) 100%
    );
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1120px;
  margin: 0 auto;
  padding: 80px 24px;
  color: var(--white);
}

.hero-label,
.section-label,
.article-meta {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--accent);
  margin: 0 0 12px;
}

.hero h1 {
  max-width: 780px;
  margin: 0;
  font-size: clamp(2.4rem, 5vw, 4.9rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.hero-subtitle {
  max-width: 680px;
  font-size: 1.18rem;
  color: #dbe7f3;
  margin: 24px 0 0;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

/* Buttons */

.button-primary,
.button-secondary {
  display: inline-block;
  padding: 12px 18px;
  border-radius: 0;
  font-weight: 800;
}

.button-primary {
  background: var(--accent);
  color: #1c2530;
}

.button-secondary {
  border: 1px solid rgba(255, 255, 255, 0.56);
  color: var(--white);
}

.button-primary:hover,
.button-secondary:hover {
  text-decoration: none;
  opacity: 0.88;
}

/* Layout */

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

.intro-section,
.featured-section,
.latest-section,
.newsletter-section {
  padding: 64px 0;
}

/* Single full-width intro box */

.intro-section .container {
  display: block;
}

/* Cards and boxes */

.intro-text,
.intro-card,
.topic-card,
.latest-item,
.newsletter-box {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 0;
  box-shadow: 0 8px 24px rgba(16, 42, 67, 0.06);
}

.intro-text {
  padding: 34px;
  width: 100%;
}

.intro-card {
  padding: 28px;
}

.intro-card h3,
.topic-card h3,
.latest-item h3,
.newsletter-box h2 {
  margin-top: 0;
  color: var(--navy);
}

.intro-card ul {
  margin: 0;
  padding-left: 20px;
}

.section-heading {
  margin-bottom: 24px;
}

.section-heading h2,
.intro-text h2 {
  margin: 0;
  color: var(--navy);
  font-size: 2rem;
  line-height: 1.2;
}

/* Featured topics */

.card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.topic-card {
  padding: 24px;
  min-height: 260px;
  display: flex;
  flex-direction: column;
}

.card-tag {
  display: inline-block;
  width: fit-content;
  background: var(--soft-blue);
  color: var(--deep-blue);
  padding: 5px 10px;
  border-radius: 0;
  font-size: 0.75rem;
  font-weight: 800;
  margin-bottom: 14px;
}

.topic-card p {
  color: var(--muted);
  flex: 1;
}

.topic-card a {
  font-weight: 800;
}

/* Latest articles */

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

.latest-item {
  padding: 26px;
}

.latest-item h3 {
  margin-bottom: 8px;
}

.latest-item h3 a {
  color: var(--navy);
}

.latest-item p {
  margin-bottom: 0;
  color: var(--muted);
}

/* Newsletter */

.newsletter-box {
  padding: 32px;
  display: flex;
  gap: 24px;
  align-items: center;
  justify-content: space-between;
}

.newsletter-box .button-primary {
  white-space: nowrap;
}

/* Footer */

.site-footer {
  background: var(--navy);
  color: #dbe7f3;
  margin-top: 40px;
}

.footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 28px 24px;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}

.site-footer a {
  color: #ffffff;
  font-weight: 700;
}

.site-footer p {
  margin: 0;
}

/* Responsive */

@media (max-width: 900px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero {
    min-height: 500px;
  }
}

@media (max-width: 640px) {
  .header-inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
    padding: 8px 20px;
  }

  .site-logo img {
    height: 30px;
    max-width: 224px;
  }

  .main-nav {
    gap: 16px;
    flex-wrap: wrap;
  }

  .hero-content {
    padding: 64px 20px;
  }

  .hero h1 {
    font-size: 2.25rem;
  }

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

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

  .intro-section,
  .featured-section,
  .latest-section,
  .newsletter-section {
    padding: 42px 0;
  }
}