/* === 城市风物志 — 编辑/杂志风格设计系统 === */
:root {
  --ink-black: #2c2c2c;
  --ink-dark: #3a3a3a;
  --ink-gray: #6b6b6b;
  --ink-light: #99968f;
  --paper-white: #f5f0e8;
  --paper-warm: #faf6f0;
  --paper-card: #fdfcf9;
  --celadon: #7aab8c;
  --celadon-dark: #5c8a71;
  --celadon-pale: #d4e8dc;
  --vermillion: #c23a2b;
  --vermillion-light: #d9534a;
  --vermillion-pale: #f5e0dd;
  --gold: #b8860b;
  --gold-light: #d4a843;
  --gold-pale: #f5ecd9;
  --border: #d9d2c4;
  --border-light: #e8e2d6;
  --radius: 12px;
  --radius-sm: 8px;
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  --serif: "Source Han Serif CN", "Noto Serif CJK SC", "STSong", "Songti SC", Georgia, serif;
  --transition: 0.2s ease;
  --max-width: 1200px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font);
  background: var(--paper-white);
  color: var(--ink-black);
  line-height: 1.7;
  font-size: 15px;
}

/* === 顶部导航 === */
.site-header {
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  gap: 24px;
  border-bottom: 1px solid var(--border-light);
  background: var(--paper-warm);
  position: sticky;
  top: 0;
  z-index: 100;
}
.site-logo {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--ink-black);
  text-decoration: none;
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.site-logo::before { content: "◆ "; color: var(--vermillion); }
.site-nav {
  display: flex;
  gap: 2px;
  flex: 1;
  overflow-x: auto;
}
.site-nav a {
  padding: 8px 14px;
  font-size: 14px;
  color: var(--ink-gray);
  text-decoration: none;
  border-radius: 6px;
  transition: all var(--transition);
  white-space: nowrap;
}
.site-nav a:hover,
.site-nav a.active {
  color: var(--ink-black);
  background: rgba(0,0,0,0.05);
}

/* === 容器 === */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.section { padding: 48px 0; }

/* === 页面头部 === */
.page-header {
  padding: 48px 0 28px;
  text-align: center;
}
.page-header h1 {
  font-family: var(--serif);
  font-size: 38px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--ink-black);
  letter-spacing: 0.02em;
}
.page-header p {
  font-size: 16px;
  color: var(--ink-gray);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.6;
}
.text-accent { color: var(--vermillion); font-style: normal; }

.breadcrumb {
  font-size: 13px;
  color: var(--ink-light);
  margin-bottom: 24px;
  padding: 8px 0;
}
.breadcrumb a { color: var(--ink-gray); text-decoration: none; }
.breadcrumb a:hover { color: var(--ink-black); }
.breadcrumb .sep { margin: 0 8px; }

/* === 标题区 === */
.section-header { text-align: center; margin-bottom: 32px; }
.section-header h2 { font-family: var(--serif); font-size: 26px; font-weight: 700; color: var(--ink-black); }
.section-header p { font-size: 14px; color: var(--ink-gray); margin-top: 6px; }

/* === 杂志网格 === */
.mag-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.mag-grid .featured { grid-column: 1 / -1; }

/* === 卡片 === */
.card {
  background: var(--paper-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 24px;
  transition: box-shadow var(--transition);
}
.card:hover { box-shadow: 0 2px 12px rgba(0,0,0,0.06); }
.card h3 { font-family: var(--serif); font-size: 18px; font-weight: 600; margin-bottom: 8px; color: var(--ink-black); }
.card p { color: var(--ink-gray); font-size: 14px; line-height: 1.7; }

/* === 网格辅助 === */
.card-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.card-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card-grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

/* === 按钮 === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  font-family: var(--font);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
}
.btn-primary { background: var(--vermillion); color: #fff; }
.btn-primary:hover { background: var(--vermillion-light); }
.btn-secondary {
  background: transparent;
  color: var(--ink-black);
  border: 1px solid var(--border);
}
.btn-secondary:hover { border-color: var(--ink-black); }
.btn-sm { padding: 6px 16px; font-size: 13px; }

/* === 城市卡片 === */
.city-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.city-card {
  display: block;
  text-decoration: none;
  color: inherit;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--paper-card);
  border: 1px solid var(--border-light);
  transition: box-shadow var(--transition);
}
.city-card:hover { box-shadow: 0 4px 20px rgba(0,0,0,0.08); }
.city-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
}
.city-card .cc-body { padding: 16px 20px 20px; }
.city-card .cc-body h3 {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--ink-black);
}
.city-card .cc-body .cc-sub { font-size: 13px; color: var(--ink-gray); line-height: 1.5; }
.city-card .cc-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  display: inline-block;
  font-size: 11px;
  color: var(--celadon-dark);
  background: rgba(255,255,255,0.9);
  padding: 3px 12px;
  border-radius: 12px;
  font-weight: 600;
}

/* === 文章卡片 === */
.article-row { display: flex; flex-direction: column; }
.article-card {
  display: flex;
  gap: 20px;
  padding: 20px 0;
  text-decoration: none;
  color: inherit;
  border-bottom: 1px solid var(--border-light);
  transition: opacity var(--transition);
  align-items: center;
}
.article-card:hover { opacity: 0.8; }
.article-card:last-child { border-bottom: none; }
.article-card img {
  width: 140px;
  height: 100px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  flex-shrink: 0;
}
.article-card h4 {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--ink-black);
}
.article-card p { font-size: 14px; color: var(--ink-gray); line-height: 1.6; }

/* === 标签 === */
.ac-tag {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 10px;
  font-size: 12px;
  font-weight: 500;
  margin-bottom: 6px;
}
.ac-tag.default  { background: var(--gold-pale); color: var(--gold); }
.ac-tag.culture  { background: var(--vermillion-pale); color: var(--vermillion); }
.ac-tag.nature   { background: var(--celadon-pale); color: var(--celadon-dark); }
.ac-tag.food     { background: #fde8d0; color: #d97706; }
.ac-tag.travel   { background: #dbeafe; color: #2563eb; }
.ac-tag.history  { background: #f3e8ff; color: #7c3aed; }

/* === 弹窗 === */
.overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 2000;
  display: flex; align-items: center; justify-content: center;
  animation: fadeIn 0.25s ease;
}
.overlay.hidden { display: none; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.modal {
  background: var(--paper-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  max-width: 560px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,0.15);
}
.modal h2 { font-family: var(--serif); font-size: 22px; margin-bottom: 16px; color: var(--ink-black); }
.modal p { color: var(--ink-gray); font-size: 14px; line-height: 1.6; margin-bottom: 12px; }

/* === 页脚 === */
.site-footer {
  border-top: 1px solid var(--border-light);
  padding: 48px 24px 24px;
  margin-top: 64px;
  background: var(--paper-warm);
}
.site-footer .footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  max-width: var(--max-width);
  margin: 0 auto 32px;
}
.footer-brand { font-family: var(--serif); font-size: 18px; font-weight: 700; color: var(--ink-black); }
.footer-brand span { color: var(--vermillion); }
.footer-desc { font-size: 13px; color: var(--ink-gray); margin-top: 8px; line-height: 1.6; }
.site-footer h4 {
  font-size: 13px; font-weight: 600; margin-bottom: 12px;
  color: var(--ink-black); text-transform: uppercase; letter-spacing: 0.05em;
}
.site-footer ul { list-style: none; }
.site-footer ul li { margin-bottom: 8px; }
.site-footer ul a { font-size: 13px; color: var(--ink-gray); text-decoration: none; }
.site-footer ul a:hover { color: var(--ink-black); }
.footer-bottom {
  text-align: center; padding-top: 20px;
  border-top: 1px solid var(--border-light);
  font-size: 12px; color: var(--ink-light);
  max-width: var(--max-width); margin: 0 auto;
}

/* === 响应式 === */
@media (max-width: 1024px) {
  .mag-grid, .city-grid { grid-template-columns: repeat(2, 1fr); }
  .card-grid-3, .card-grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .site-header { padding: 0 12px; gap: 8px; }
  .site-nav a { font-size: 12px; padding: 6px 8px; }
  .mag-grid, .city-grid, .card-grid-2, .card-grid-3, .card-grid-4 { grid-template-columns: 1fr; }
  .article-card { flex-direction: column; }
  .article-card img { width: 100%; height: 180px; }
  .site-footer .footer-grid { grid-template-columns: 1fr; }
  .page-header h1 { font-size: 28px; }
}