:root {
  --bg: #eef7fb;
  --paper: #f8fcff;
  --ink: #172633;
  --muted: #5f7384;
  --line: #cfe2ee;
  --accent: #2f6f9f;
  --accent-soft: #d9edf8;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Georgia, 'Times New Roman', serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.65;
}

a {
  color: inherit;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.site {
  max-width: 980px;
  margin: 0 auto;
  padding: 28px 22px 56px;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--line);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

.brand {
  font-size: 1rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 700;
}

.primary-nav {
  display: flex;
  gap: 18px;
  font-size: 0.92rem;
  color: var(--muted);
}

.hero {
  padding: 72px 0 56px;
  max-width: 760px;
}

.eyebrow {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  font-weight: 700;
  margin-bottom: 14px;
}

h1 {
  font-size: clamp(3rem, 8vw, 6.8rem);
  line-height: 0.95;
  letter-spacing: -0.06em;
  margin: 0 0 24px;
  font-weight: 500;
}

.hero p {
  font-size: clamp(1.15rem, 2vw, 1.45rem);
  color: var(--muted);
  max-width: 640px;
  margin: 0;
}

.grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr;
  gap: 28px;
  align-items: start;
}

.panel {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 28px;
  box-shadow: 0 18px 45px rgba(47, 111, 159, 0.08);
}

h2 {
  margin: 0 0 20px;
  font-size: 1.2rem;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  letter-spacing: 0.02em;
}

.post {
  padding: 22px 0;
  border-top: 1px solid var(--line);
}

.post:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.post:last-of-type {
  padding-bottom: 0;
}

.post time {
  display: block;
  color: var(--muted);
  font-size: 0.88rem;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  margin-bottom: 6px;
}

.post h3 {
  margin: 0 0 8px;
  font-size: 1.55rem;
  line-height: 1.15;
  font-weight: 500;
}

.post p {
  margin: 0;
  color: var(--muted);
}

.side-note {
  font-size: 1rem;
  color: var(--muted);
}

.category-list {
  display: grid;
  gap: 12px;
  margin-top: 18px;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

.category-card {
  display: block;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: linear-gradient(135deg, #ffffff 0%, var(--accent-soft) 100%);
  text-decoration: none;
}

.category-card strong {
  display: block;
  color: var(--ink);
  font-size: 1rem;
  margin-bottom: 2px;
}

.category-card span {
  color: var(--muted);
  font-size: 0.84rem;
}

footer {
  margin-top: 42px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.92rem;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

@media (max-width: 760px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .primary-nav {
    flex-wrap: wrap;
  }

  .hero {
    padding: 52px 0 42px;
  }

  .grid {
    grid-template-columns: 1fr;
  }

  .panel {
    padding: 22px;
  }
}