:root {
  --bg: #f5f5f5;
  --surface: #ffffff;
  --text: #111111;
  --muted: #555555;
  --border: #e8e8e8;
  --navy: #1e2a38;
  --amber: rgba(201, 154, 61, 0.72);
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  line-height: 1.65;
}

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

.site-shell {
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 24px 72px;
  background:
    radial-gradient(
      circle at top right,
      rgba(201, 154, 61, 0.08),
      rgba(201, 154, 61, 0) 34%
    ),
    linear-gradient(to bottom, #fafafa, #f7f7f7);
  min-height: 100vh;
}

.site-header {
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.brand-block {
  margin-bottom: 14px;
}

.site-title {
  margin: 0 0 2px;
  color: var(--navy);
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.05;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.site-tagline {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.45;
}

.brand-mark {
  width: 56px;
  height: 3px;
  border-radius: 999px;
  background: var(--amber);
}
.site-nav {
  display: flex;
  gap: 18px;
  align-items: center;
}

.nav-link {
  color: var(--text);
  font-weight: 500;
}

.nav-link.current,
.nav-link:hover {
  color: var(--navy);
}

.main-content {
  padding-top: 32px;
}

.intro-section,
.articles-section {
  margin-bottom: 44px;
}
.articles-section {
  display: grid;
  gap: 18px;
}
h2 {
  margin: 0 0 18px;
  font-size: 1.15rem;
  line-height: 1.3;
  font-weight: 700;
  color: var(--text);
}

p {
  margin: 0 0 18px;
}

.article-card {
  display: block;
  padding: 28px 28px 24px;
  background: #ffffff;
border: 1px solid #e0e0e0;
  border-radius: 20px;
  transition: transform 0.15s ease, border-color 0.15s ease,
    box-shadow 0.15s ease;
}

.article-card:hover {
  transform: translateY(-1px);
  border-color: #d9d9d9;
  box-shadow: 0 8px 24px rgba(17, 17, 17, 0.04);
}

.article-meta {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 0.95rem;
}

.article-card h3 {
  margin: 0 0 12px;
  color: var(--navy);
  font-size: clamp(1.25rem, 2.2vw, 1.6rem);
  line-height: 1.12;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.article-summary {
  margin: 0;
  color: var(--text);
}
.article-page .site-shell,
.article-shell {
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 24px 72px;
  background:
    radial-gradient(
      circle at top right,
      rgba(201, 154, 61, 0.08),
      rgba(201, 154, 61, 0) 34%
    ),
    linear-gradient(to bottom, #fafafa, #f7f7f7);
  min-height: 100vh;
}

.article-container {
  max-width: 680px;
  padding-top: 28px;
}

.article-title {
  margin: 0 0 10px;
  color: var(--text);
font-size: clamp(1.4rem, 2.2vw, 1.9rem);
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.article-date {
  margin: 0 0 34px;
  color: var(--muted);
  font-size: 0.95rem;
}

article h2 {
  margin: 40px 0 14px;
  color: var(--text);
  font-size: 1.15rem;
  line-height: 1.3;
  font-weight: 700;
}

article p {
  margin: 0 0 18px;
  max-width: 40rem;
}

@media (max-width: 640px) {
  .site-shell,
  .article-page .site-shell,
  .article-shell {
    padding: 32px 18px 56px;
  }

  .site-nav {
    gap: 14px;
    flex-wrap: wrap;
  }

  .article-card {
    padding: 22px 20px 20px;
    border-radius: 16px;
  }

  .article-container {
    padding-top: 24px;
  }
}