:root {
  --color-navy: #154165;
  --color-blue: #256FAD;
  --color-blue-bright: #4A98D9;
  --color-blue-pale: #D9EAF7;
  --color-gold: #AD7900;
  --color-ink: #333;
  --color-ink-soft: #666;
  --color-paper: #ffffff;
  --color-paper-deep: #FBFDFE;
  --color-line: #e0e0e0;
  --font-body: Arial, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-ink);
  background: var(--color-paper-deep);
  line-height: 1.6;
  font-size: 14px;
}

img { max-width: 100%; display: block; }
a { color: var(--color-blue); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 1140px; margin: 0 auto; padding: 0 20px; }

h1, h2, h3 {
  font-family: var(--font-body);
  font-weight: 700;
  line-height: 1.3;
  margin: 0 0 0.5em;
  color: var(--color-navy);
}

.page-title { font-size: 24px; margin: 0; }
.section-title {
  font-size: 19px; color: var(--color-navy);
  border-bottom: 2px solid var(--color-blue-pale);
  padding-bottom: 10px; margin-bottom: 18px;
}

/* Header */
.site-header { background: var(--color-navy); color: #fff; padding: 20px 0; }
.header-row { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.brand h1 { color: #fff; font-size: 26px; margin: 0; }
.brand span { color: var(--color-blue-pale); font-size: 13px; }
.header-social a {
  display: inline-block; background: var(--color-blue); color: #fff;
  padding: 8px 16px; font-size: 13px; font-weight: 700;
}
.header-social a:hover { background: var(--color-blue-bright); text-decoration: none; }

/* Nav */
.nav-bar { background: var(--color-blue); }
.main-nav { display: flex; flex-wrap: wrap; }
.main-nav a {
  color: #fff; text-decoration: none; font-size: 13px; font-weight: 700;
  padding: 10px 14px; border-right: 1px solid rgba(255,255,255,0.15);
}
.main-nav a:hover { background: var(--color-navy); text-decoration: none; }

/* Notice */
.notice-bar { background: #fff3cd; border-bottom: 1px solid #ffe28a; padding: 10px 0; font-size: 12.5px; color: #6b5400; text-align: center; }

/* Content layout */
.page-body { padding: 30px 0 50px; }

/* Posts grid */
.posts-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-bottom: 40px; }
.post-card { background: #fff; border: 1px solid var(--color-line); }
.post-card img { width: 100%; height: 170px; object-fit: cover; }
.post-card-noimg {
  height: 170px; display: flex; align-items: center; justify-content: center;
  background: var(--color-blue-pale); color: var(--color-navy); font-size: 13px; text-align: center; padding: 16px;
}
.post-card-body { padding: 14px 16px; }
.post-card h3 { font-size: 14px; margin: 0; line-height: 1.4; color: var(--color-navy); }

/* Sitemap */
.sitemap-section { background: #fff; border: 1px solid var(--color-line); padding: 26px 28px; margin-bottom: 30px; }
.sitemap-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.sitemap-group h4 { font-size: 13.5px; color: var(--color-gold); text-transform: uppercase; letter-spacing: 0.02em; margin: 0 0 10px; border-bottom: 1px solid var(--color-line); padding-bottom: 8px; }
.sitemap-group ul { list-style: none; margin: 0; padding: 0; }
.sitemap-group li { margin-bottom: 5px; }
.sitemap-group a { font-size: 12.5px; color: var(--color-ink-soft); }
.sitemap-group a:hover { color: var(--color-blue); }

/* Intro box */
.intro-box { background: #fff; border-left: 4px solid var(--color-gold); padding: 18px 22px; margin-bottom: 30px; color: var(--color-ink-soft); font-size: 14.5px; }
.intro-box strong { color: var(--color-navy); }

/* Footer */
.site-footer { background: var(--color-navy); color: rgba(255,255,255,0.75); padding: 24px 0; font-size: 12.5px; text-align: center; }
.site-footer p { margin: 0 0 6px; }
.site-footer a { color: var(--color-blue-pale); }

@media (max-width: 960px) {
  .main-nav { display: none; }
  .posts-grid { grid-template-columns: repeat(2, 1fr); }
  .sitemap-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .posts-grid { grid-template-columns: 1fr; }
  .sitemap-grid { grid-template-columns: 1fr; }
}