* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: #172033;
  background: #f7f8fb;
  line-height: 1.7;
}

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

.container {
  width: min(1120px, 92%);
  margin: 0 auto;
}


/* Header */

.site-header {
  background: #ffffff;
  border-bottom: 1px solid #e5e7eb;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}

.site-logo {
  font-size: 22px;
  font-weight: 700;
  color: #111827;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.site-nav a {
  font-size: 15px;
  font-weight: 600;
  color: #4b5563;
}

.site-nav a:hover {
  color: #111827;
}


/* Main content */

main {
  min-height: 70vh;
}


/* Hero */

.hero {
  padding: 90px 0;
  background: #ffffff;
  border-bottom: 1px solid #e5e7eb;
}

.hero-content {
  max-width: 760px;
}

.hero h1 {
  margin: 0 0 20px;
  font-size: clamp(38px, 6vw, 64px);
  line-height: 1.1;
  letter-spacing: -1.5px;
  color: #111827;
}

.hero p {
  margin: 0;
  max-width: 700px;
  font-size: 19px;
  color: #667085;
}


/* Sections */

.section {
  padding: 70px 0;
}

.section-heading {
  margin-bottom: 32px;
}

.section-heading h2 {
  margin: 0 0 8px;
  font-size: 32px;
  color: #111827;
}

.section-heading p {
  margin: 0;
  color: #667085;
}


/* Category cards */

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

.category-card {
  display: block;
  padding: 28px;
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 14px;
  transition: 0.2s ease;
}

.category-card:hover {
  transform: translateY(-3px);
  border-color: #cbd5e1;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.07);
}

.category-card h3 {
  margin: 0 0 8px;
  font-size: 19px;
  color: #111827;
}

.category-card p {
  margin: 0;
  color: #667085;
  font-size: 14px;
}


/* Article cards */

.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.article-card {
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 14px;
  padding: 26px;
  transition: 0.2s ease;
}

.article-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.07);
}

.article-card .category {
  display: inline-block;
  margin-bottom: 12px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: #667085;
}

.article-card h3 {
  margin: 0 0 12px;
  font-size: 20px;
  line-height: 1.35;
  color: #111827;
}

.article-card p {
  margin: 0 0 18px;
  color: #667085;
  font-size: 14px;
}

.article-date {
  font-size: 13px;
  color: #98a2b3;
}


/* Article page */

.article-container {
  width: min(820px, 92%);
  margin: 0 auto;
  padding: 70px 0;
}

.article-header {
  margin-bottom: 40px;
}

.article-header h1 {
  margin: 0 0 18px;
  font-size: clamp(36px, 5vw, 54px);
  line-height: 1.15;
  color: #111827;
}

.article-meta {
  color: #667085;
  font-size: 14px;
}

.article-content {
  font-size: 17px;
  color: #344054;
}

.article-content h2 {
  margin-top: 45px;
  color: #111827;
}

.article-content h3 {
  margin-top: 35px;
  color: #111827;
}

.article-content img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
}

.article-content a {
  color: #2563eb;
  text-decoration: underline;
}


/* Footer */

.site-footer {
  padding: 35px 0;
  background: #111827;
  color: #d1d5db;
  margin-top: 50px;
}

.site-footer p {
  margin: 0;
  text-align: center;
  font-size: 14px;
}


/* Mobile */

@media (max-width: 800px) {

  .header-inner {
    flex-direction: column;
    justify-content: center;
    padding: 18px 0;
  }

  .site-nav {
    gap: 18px;
    flex-wrap: wrap;
    justify-content: center;
  }

  .hero {
    padding: 65px 0;
  }

  .category-grid,
  .article-grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 50px 0;
  }

}
/* Categories page */

.category-section {
  margin-bottom: 65px;
}

.category-section h2 {
  margin: 0 0 25px;
  font-size: 28px;
  color: #111827;
  padding-bottom: 12px;
  border-bottom: 1px solid #e5e7eb;
}
/* Article styling */

.article-category {
  display: inline-block;
  margin-bottom: 16px;
  padding: 6px 12px;
  background: #eef2ff;
  color: #3730a3;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.article-content p {
  margin: 0 0 22px;
}

.article-content ul,
.article-content ol {
  margin: 0 0 25px;
  padding-left: 25px;
}

.article-content li {
  margin-bottom: 8px;
}

.article-content blockquote {
  margin: 30px 0;
  padding: 20px 25px;
  border-left: 4px solid #2563eb;
  background: #f8fafc;
  color: #475467;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 30px 0;
  overflow-x: auto;
}

.article-content th,
.article-content td {
  padding: 12px 15px;
  border: 1px solid #e5e7eb;
  text-align: left;
}

.article-content th {
  background: #f8fafc;
  font-weight: 700;
  color: #111827;
}

.article-content code {
  padding: 2px 5px;
  background: #f2f4f7;
  border-radius: 4px;
  font-size: 14px;
}

.article-content pre {
  overflow-x: auto;
  padding: 20px;
  background: #111827;
  color: #f9fafb;
  border-radius: 10px;
  margin: 25px 0;
}

/* Featured images */

.article-featured-image {
  display: block;
  width: 100%;
  height: auto;
  max-height: 460px;
  object-fit: cover;
  border-radius: 14px;
  margin: 0 0 35px;
}

/* Related articles */

.related-articles {
  margin-top: 65px;
  padding-top: 35px;
  border-top: 1px solid #e5e7eb;
}

.related-articles h2 {
  margin-bottom: 25px;
  font-size: 28px;
  color: #111827;
}
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 25px;
  font-size: 14px;
  color: #6b7280;
}

.breadcrumbs a {
  color: #4b5563;
  text-decoration: none;
}

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

.breadcrumbs span:last-child {
  color: #111827;
  font-weight: 500;
}
.author-box {
  margin-top: 60px;
  padding: 30px;
  border: 1px solid #e5e7eb;
  border-radius: 14px;
  background: #f9fafb;
}

.author-box h2 {
  margin-top: 0;
  margin-bottom: 15px;
  font-size: 24px;
  color: #111827;
}

.author-box p {
  margin-bottom: 18px;
  line-height: 1.7;
  color: #4b5563;
}

.author-box a {
  color: #111827;
  font-weight: 600;
  text-decoration: none;
}

.author-box a:hover {
  text-decoration: underline;
}
.category-heading {
  margin-bottom: 25px;
}

.category-heading h2 {
  margin-bottom: 8px;
}

.category-heading p {
  margin: 0;
  color: #6b7280;
  font-size: 15px;
}