:root {
  --bg: #f6f3ee;
  --paper: rgba(255,255,255,0.78);
  --text: #1f2937;
  --muted: #6b7280;
  --line: rgba(15, 23, 42, 0.08);
  --accent: #0f766e;
  --accent-soft: rgba(15, 118, 110, 0.1);
  --shadow: 0 20px 60px rgba(15, 23, 42, 0.08);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: ui-serif, Georgia, "Noto Serif SC", "Songti SC", "STSong", serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(15,118,110,0.12), transparent 35%),
    radial-gradient(circle at top right, rgba(59,130,246,0.08), transparent 28%),
    var(--bg);
  line-height: 1.92;
}
a { color: inherit; }
.site-shell {
  max-width: 1120px;
  margin: 0 auto;
  padding: 28px 22px 64px;
}
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 28px;
}
.brand {
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 14px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.brand strong { color: var(--text); }
.home-link {
  text-decoration: none;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.72);
  backdrop-filter: blur(18px);
}
.hero, .article-wrap, .index-card {
  background: var(--paper);
  border: 1px solid rgba(255,255,255,0.7);
  box-shadow: var(--shadow);
  backdrop-filter: blur(20px);
}
.hero {
  border-radius: 32px;
  overflow: hidden;
}
.hero-cover {
  width: 100%;
  height: min(36vw, 420px);
  object-fit: cover;
  display: block;
}
.hero-body {
  padding: 28px 28px 30px;
}
.kicker {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 13px;
  font-family: ui-sans-serif, system-ui, sans-serif;
}
.hero h1, .article-title {
  font-size: clamp(32px, 5vw, 54px);
  line-height: 1.12;
  margin: 18px 0 14px;
  letter-spacing: -0.03em;
}
.subtitle {
  color: var(--muted);
  font-size: 18px;
  margin: 0 0 20px;
  max-width: 760px;
}
.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--muted);
  font-size: 14px;
  font-family: ui-sans-serif, system-ui, sans-serif;
}
.article-wrap {
  border-radius: 32px;
  margin-top: 28px;
  padding: 34px min(6vw, 56px) 54px;
}
.lead {
  font-size: 21px;
  line-height: 1.85;
  color: #111827;
}
.article-content h2, .article-content h3 {
  font-size: clamp(25px, 3vw, 33px);
  line-height: 1.28;
  margin-top: 52px;
  margin-bottom: 16px;
}
.article-content p { margin: 0 0 22px; font-size: 20px; }
.article-content ul { margin: 0 0 24px 1.2em; padding: 0; }
.article-content li { margin-bottom: 12px; font-size: 19px; }
.article-inline-image {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 20px;
  margin: 28px 0;
  box-shadow: 0 18px 45px rgba(15, 23, 42, 0.12);
}
.callout {
  margin: 30px 0;
  padding: 18px 20px;
  border-left: 4px solid var(--accent);
  background: rgba(15,118,110,0.06);
  border-radius: 16px;
  font-size: 18px;
}
.footnote {
  margin-top: 42px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
  font-family: ui-sans-serif, system-ui, sans-serif;
}
.index-grid {
  display: grid;
  gap: 24px;
  margin-top: 24px;
}
.index-card {
  border-radius: 28px;
  padding: 24px;
}
.index-card h2 {
  margin: 10px 0 12px;
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.18;
}
.index-card p { margin: 0 0 16px; color: var(--muted); font-size: 17px; }
.index-card a.readmore {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--accent);
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-weight: 600;
}
.taglist { display:flex; flex-wrap:wrap; gap:10px; margin-top: 16px; }
.tag {
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 13px;
  color: var(--muted);
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.65);
}
@media (max-width: 720px) {
  .site-shell { padding: 18px 14px 42px; }
  .hero-body, .article-wrap { padding: 22px 18px 30px; }
  .article-content p { font-size: 18px; }
  .lead { font-size: 19px; }
  .hero-cover { height: 220px; }
}