* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f6f6f6;
  color: #1d1d1f;
  line-height: 1.7;
}

a {
  color: #0050b3;
  text-decoration: none;
}

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

header {
  background-color: #ffffff;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  position: sticky;
  top: 0;
  z-index: 100;
}

.container {
  width: min(1100px, 92%);
  margin: 0 auto;
}

.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
  gap: 24px;
}

.brand {
  font-size: 1.75rem;
  font-weight: 700;
  color: #0f172a;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 18px;
  padding: 0;
  margin: 0;
}

.ad-slot {
  border: 2px dashed #d0d7de;
  background-color: #fefefe;
  padding: 16px;
  border-radius: 8px;
  text-align: center;
  color: #626d7a;
  font-size: 0.95rem;
}

.hero {
  background: linear-gradient(135deg, #f1f5f9, #ffffff);
  padding: 60px 0 40px;
}

.hero h1 {
  font-size: 2.4rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: #0f172a;
}

.hero p {
  font-size: 1.05rem;
  max-width: 650px;
  margin-bottom: 32px;
}

.hero .cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.hero .cta {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  transition: all 0.2s ease-in-out;
}

.hero .cta.primary {
  background-color: #0050b3;
  color: #ffffff;
}

.hero .cta.primary:hover {
  background-color: #003d8f;
}

.hero .cta.secondary {
  background-color: #e2e8f0;
  color: #0f172a;
}

.hero .cta.secondary:hover {
  background-color: #cbd5e1;
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 22px;
  padding: 40px 0 60px;
}

.card {
  background-color: #ffffff;
  border-radius: 16px;
  padding: 24px;
  border: 1px solid rgba(15, 23, 42, 0.08);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 18px;
  box-shadow: 0 18px 36px rgba(15, 23, 42, 0.05);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.article-card {
  padding: 0;
  overflow: hidden;
  gap: 0;
}

.article-card .card-media {
  position: relative;
  height: 180px;
  background-image: var(--hero, none);
  background-size: cover;
  background-position: center;
  transition: transform 0.3s ease;
}

.article-card .card-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15, 23, 42, 0) 30%, rgba(15, 23, 42, 0.55) 100%);
}

.article-card .card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.article-card .card-body p {
  color: #475569;
}

.article-card .card-body h2 {
  color: #0f172a;
}

.card:hover .card-media {
  transform: scale(1.04);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.12);
}

.card h2 {
  font-size: 1.3rem;
  margin: 0;
  color: #0f172a;
}

.card p {
  margin: 0;
  color: #475569;
  font-size: 0.98rem;
}

.card .read-more {
  margin-top: auto;
  font-weight: 600;
  color: #0050b3;
}

footer {
  background-color: #0f172a;
  color: #e2e8f0;
  padding: 36px 0;
  margin-top: 40px;
}

footer p {
  margin: 0;
  font-size: 0.95rem;
}

.article-hero {
  position: relative;
  padding: 160px 0 120px;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: flex-end;
  color: #f8fafc;
}

.article-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.35), rgba(15, 23, 42, 0.7));
}

.article-hero .container {
  position: relative;
  z-index: 1;
}

.article-hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  margin: 0 0 12px;
}

.article-hero .article-meta {
  color: rgba(226, 232, 240, 0.9);
  font-size: 0.95rem;
  margin: 0;
}

.article-page main {
  background-color: #ffffff;
  border-radius: 20px;
  padding: 48px 48px 52px;
  margin: -80px 0 60px;
  box-shadow: 0 24px 50px rgba(15, 23, 42, 0.08);
  border: 1px solid rgba(15, 23, 42, 0.06);
  position: relative;
  z-index: 2;
}

.article-page h1 {
  font-size: 2.1rem;
  margin-top: 0;
  color: #0f172a;
}

.article-meta {
  color: #64748b;
  font-size: 0.92rem;
  margin-bottom: 24px;
}

.article-page p {
  color: #334155;
  font-size: 1.02rem;
  margin-bottom: 18px;
}

.article-page ul {
  margin: 0 0 20px 20px;
  padding: 0;
}

.article-page li {
  margin-bottom: 10px;
}

.back-home {
  display: inline-block;
  margin-top: 24px;
  font-weight: 600;
}

@media (max-width: 768px) {
  .top-bar {
    flex-direction: column;
    align-items: flex-start;
  }

  nav ul {
    flex-wrap: wrap;
  }

  .article-page main {
    margin: -60px 0 40px;
    padding: 32px 22px 36px;
  }

  .article-hero {
    padding: 120px 0 100px;
  }
}