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

:root {
  --bg: #faf9f7;
  --text: #1a1a1a;
  --text-light: #555;
  --text-faint: #888;
  --border: #e0ddd8;
  --link: #1a5e63;
  --link-hover: #0d3d40;
  --accent: #8b4513;
  --font-body: "Georgia", "Noto Serif SC", serif;
  --font-ui: "system-ui", "PingFang SC", "Microsoft YaHei", sans-serif;
  --max-w: 680px;
  --sp: 1.6rem;
}

html { font-size: 17px; scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

/* ── HEADER ─────────────────────────────────────────── */
.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 100;
}
.site-header-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 0.8rem 1.2rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.site-title {
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.site-title:hover { color: var(--link); }

.breadcrumb {
  font-family: var(--font-ui);
  font-size: 0.8rem;
  color: var(--text-faint);
}
.breadcrumb a {
  color: var(--text-faint);
  text-decoration: none;
}
.breadcrumb a:hover { color: var(--link); }
.breadcrumb .sep { margin: 0 0.3em; }
.breadcrumb .current { color: var(--text-light); }

/* ── FOOTER ─────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 4rem;
  padding: 2rem 1.2rem;
}
.site-footer-inner {
  max-width: 900px;
  margin: 0 auto;
  font-family: var(--font-ui);
  font-size: 0.8rem;
  color: var(--text-faint);
  text-align: center;
}
.site-footer a { color: var(--text-faint); }

/* ── MAIN WRAPPER ────────────────────────────────────── */
main { max-width: var(--max-w); margin: 0 auto; padding: 0 1.2rem; }

/* ── ARTICLE HEADER ──────────────────────────────────── */
.article-header { padding: 3rem 0 2rem; border-bottom: 1px solid var(--border); margin-bottom: 2.5rem; }
.article-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}
.dot {
  display: inline-block;
  width: 10px; height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}
.group-label {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  color: var(--text-light);
  letter-spacing: 0.04em;
}
.article-title {
  font-size: 1.55rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}
.article-subtitle {
  font-family: var(--font-ui);
  font-size: 0.9rem;
  color: var(--text-light);
}

/* ── ARTICLE MAP ─────────────────────────────────────── */
.article-locmap-wrap { margin-bottom: 2rem; }
#article-locmap { height: 220px; width: 100%; border: 1px solid var(--border); border-radius: 4px; }
.article-locmap-hint {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  color: var(--text-faint);
  margin-top: 0.4rem;
}
.article-locmap-hint a { color: var(--link); }

/* ── ARTICLE BODY ────────────────────────────────────── */
.article-body { font-size: 1rem; }

.article-body p {
  margin-bottom: 1.3rem;
}
.article-body p:first-child { font-size: 1.05rem; }

.article-body h2 {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 2.5rem 0 0.8rem;
  padding-bottom: 0.3rem;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}

.article-body figure {
  margin: 1.8rem 0;
}
.article-body figure img {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 3px;
}
.article-body figcaption {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  color: var(--text-faint);
  margin-top: 0.5rem;
  line-height: 1.5;
}
.article-body figcaption a { color: var(--link); }

.article-body a {
  color: var(--link);
  text-decoration: underline;
  text-decoration-color: rgba(26,94,99,0.3);
  text-underline-offset: 2px;
}
.article-body a:hover { color: var(--link-hover); }

.article-body strong { font-weight: 700; }

.article-body ul, .article-body ol {
  padding-left: 1.5rem;
  margin-bottom: 1.3rem;
}
.article-body li { margin-bottom: 0.4rem; }

.article-body blockquote {
  border-left: 3px solid var(--border);
  padding-left: 1rem;
  margin: 1.5rem 0;
  color: var(--text-light);
  font-style: italic;
}

/* ── ARTICLE FOOT NAV ───────────────────────────────── */
.article-foot-nav {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-family: var(--font-ui);
  font-size: 0.88rem;
}
.article-foot-nav a { color: var(--link); text-decoration: none; }
.article-foot-nav a:hover { color: var(--link-hover); }

/* ── CITY PAGE (index) ───────────────────────────────── */
.city-page { max-width: 860px; margin: 0 auto; padding: 0 1.2rem; }
.city-header { padding: 3.5rem 0 2.5rem; border-bottom: 1px solid var(--border); margin-bottom: 3rem; }
.city-title {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 0.8rem;
}
.city-desc {
  font-family: var(--font-ui);
  font-size: 0.95rem;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 0.5rem;
}
.city-map-link {
  display: inline-block;
  margin-top: 1rem;
  font-family: var(--font-ui);
  font-size: 0.88rem;
  color: var(--link);
  text-decoration: none;
}
.city-map-link:hover { color: var(--link-hover); }

.city-group { margin-bottom: 2.5rem; }
.city-group-name {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  font-family: var(--font-ui);
  font-weight: 700;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.8rem;
}
.city-group-list { list-style: none; }
.city-group-list li { margin-bottom: 0.6rem; }
.city-group-list a {
  font-size: 1rem;
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
}
.city-group-list a:hover { color: var(--link); }
.article-subtitle-inline {
  display: block;
  font-family: var(--font-ui);
  font-size: 0.78rem;
  color: var(--text-faint);
  margin-top: 0.1rem;
}

.city-map-section { margin-top: 4rem; padding-top: 2rem; border-top: 1px solid var(--border); }
.city-map-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1.2rem;
  font-family: var(--font-ui);
}
#city-map-container { height: 480px; width: 100%; border: 1px solid var(--border); border-radius: 4px; }

/* ── RESPONSIVE ──────────────────────────────────────── */
@media (max-width: 600px) {
  html { font-size: 16px; }
  .article-title { font-size: 1.3rem; }
  .city-title { font-size: 1.6rem; }
  #article-locmap { height: 180px; }
  #city-map-container { height: 320px; }
}