:root {
  --color-primary: #2d6a4f;
  --color-text: #1a1a2e;
  --color-muted: #6b7280;
  --color-bg: #ffffff;
  --color-bg-alt: #f9fafb;
  --color-border: #e5e7eb;
  --max-width: 780px;
  --font-body: 'Georgia', serif;
  --font-ui: system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  font-size: 1.05rem;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* HEADER */
header {
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-ui);
}
.site-title { font-size: 1.2rem; font-weight: 700; color: var(--color-text); }
nav a { margin-left: 1.5rem; color: var(--color-muted); font-size: 0.95rem; }
nav a:hover { color: var(--color-primary); text-decoration: none; }

/* HERO */
.hero {
  background-size: cover;
  background-position: center;
  min-height: 380px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.48);
}
.hero-content {
  position: relative;
  z-index: 1;
  color: #fff;
  padding: 2rem;
  max-width: 700px;
}
.hero-content h1 { font-size: 2.2rem; margin-bottom: 0.75rem; line-height: 1.3; }
.hero-content p { font-size: 1.1rem; opacity: 0.9; }

/* MAIN */
main { max-width: var(--max-width); margin: 0 auto; padding: 2.5rem 1.5rem; }

/* ARTICLE CARDS */
.articles-grid { display: grid; gap: 2rem; }
.card {
  border: 1px solid var(--color-border);
  border-radius: 10px;
  overflow: hidden;
  transition: box-shadow 0.2s;
}
.card:hover { box-shadow: 0 4px 20px rgba(0,0,0,0.08); }
.card img { width: 100%; height: 200px; object-fit: cover; }
.card-body { padding: 1.25rem; }
.card-meta { font-size: 0.8rem; color: var(--color-muted); font-family: var(--font-ui); margin-bottom: 0.5rem; }
.card-title { font-size: 1.2rem; margin-bottom: 0.5rem; line-height: 1.4; }
.card-desc { font-size: 0.95rem; color: var(--color-muted); }
.read-more {
  display: inline-block;
  margin-top: 0.75rem;
  font-size: 0.9rem;
  font-family: var(--font-ui);
  color: var(--color-primary);
  font-weight: 600;
}

/* ARTICLE */
.article-hero { width: 100%; max-height: 420px; object-fit: cover; border-radius: 10px; margin-bottom: 2rem; }
.article-header { margin-bottom: 2rem; }
.article-header h1 { font-size: 2rem; line-height: 1.3; margin-bottom: 0.5rem; }
.article-meta { font-size: 0.85rem; color: var(--color-muted); font-family: var(--font-ui); }
.article-content h2 { font-size: 1.4rem; margin: 2rem 0 0.75rem; }
.article-content h3 { font-size: 1.15rem; margin: 1.5rem 0 0.5rem; }
.article-content p { margin-bottom: 1.2rem; }
.article-content ul, .article-content ol { margin: 0 0 1.2rem 1.5rem; }
.article-content li { margin-bottom: 0.4rem; }
.article-content table { width: 100%; border-collapse: collapse; margin: 1.5rem 0; font-family: var(--font-ui); font-size: 0.9rem; }
.article-content th, .article-content td { border: 1px solid var(--color-border); padding: 0.6rem 0.8rem; text-align: left; }
.article-content th { background: var(--color-bg-alt); font-weight: 600; }
.article-content strong { color: var(--color-text); }

/* FOOTER */
footer {
  border-top: 1px solid var(--color-border);
  text-align: center;
  padding: 2rem 1.5rem;
  font-size: 0.85rem;
  color: var(--color-muted);
  font-family: var(--font-ui);
}

@media (max-width: 600px) {
  .hero-content h1 { font-size: 1.6rem; }
  header { flex-direction: column; gap: 0.75rem; }
}