/* ===== 华尔街风格设计令牌 ===== */
:root {
  --wsj-primary: #1a2a3a;
  --wsj-accent: #b22234;
  --wsj-gold: #c9a84c;
  --wsj-bg: #f4f5f7;
  --wsj-card-bg: #ffffff;
  --wsj-card-shadow: 0 2px 8px rgba(0,0,0,0.08);
  --wsj-text-primary: #1a2a3a;
  --wsj-text-secondary: #4a5b6b;
  --wsj-text-muted: #8a9aa8;
  --wsj-border: #e2e6ea;
  --wsj-font-title: 'Georgia', 'Times New Roman', serif;
  --wsj-font-body: 'Merriweather', 'Georgia', serif;
  --wsj-font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* ===== 全局重置 ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { margin: 0; }
body {
    margin: 0;
    background: var(--wsj-bg);
    color: var(--wsj-text-primary);
    font-family: var(--wsj-font-body);
    line-height: 1.6;
}
.site-wrapper {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.site-header, .category-nav { flex-shrink: 0; }
/* ===== 主内容区（弹性撑满，固定页脚） ===== */
main {
  flex: 1;
  display: flex;
  flex-direction: column;
}
main > .container {
  flex: 1;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px 40px;
}

.site-footer { flex-shrink: 0; }

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== 头部 ===== */
.site-header {
  background: var(--wsj-primary);
  color: white;
  padding: 0 20px;
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.site-title {
  font-family: var(--wsj-font-title);
  font-size: 24px;
  font-weight: bold;
  letter-spacing: 1px;
}
.site-title a { color: white; text-decoration: none; }

.header-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}
.header-nav a {
  color: rgba(255,255,255,0.65);
  font-family: var(--wsj-font-sans);
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  transition: color 0.2s;
  padding: 4px 0;
}
.header-nav a:hover,
.header-nav a.active {
  color: #ffffff;
}
.header-nav-sep {
  color: rgba(255,255,255,0.3);
  font-size: 11px;
  font-weight: 300;
}

/* ===== 分类导航 ===== */
.category-nav {
  background: white;
  border-bottom: 2px solid var(--wsj-accent);
  padding: 0 20px;
  display: flex;
  gap: 24px;
  font-family: var(--wsj-font-sans);
  font-size: 14px;
  font-weight: 500;
  overflow-x: auto;
}
.category-nav a {
  display: inline-block;
  padding: 12px 0;
  color: var(--wsj-text-secondary);
  text-decoration: none;
  border-bottom: 3px solid transparent;
  transition: 0.2s;
  white-space: nowrap;
}
.category-nav a.active,
.category-nav a:hover {
  color: var(--wsj-accent);
  border-bottom-color: var(--wsj-accent);
}

/* ===== 文章网格 ===== */
.article-grid {

  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin: 24px 0;
}
.article-card {
  background: var(--wsj-card-bg);
  border-radius: 4px;
  box-shadow: var(--wsj-card-shadow);
  overflow: hidden;
  transition: transform 0.2s;
  border-top: 3px solid var(--wsj-gold);
}
.article-card:hover { transform: translateY(-4px); }
.article-card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}
.article-card .content { padding: 16px; }
.article-card .category-tag {
  display: inline-block;
  background: var(--wsj-accent);
  color: white;
  font-family: var(--wsj-font-sans);
  font-size: 11px;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.article-card h2 {
  font-family: var(--wsj-font-title);
  font-size: 20px;
  margin: 10px 0 6px;
  line-height: 1.3;
}
.article-card h2::before {
  content: "";
  display: block;
  width: 28px;
  height: 2px;
  background: var(--wsj-gold);
  margin-bottom: 8px;
}
.article-card p {
  color: var(--wsj-text-secondary);
  font-size: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
/* 头条特殊样式（第一篇文章占两列） */
.article-grid .featured {
  grid-column: span 2;
}
.article-grid .featured h2 { font-size: 28px; }
.article-grid .featured p { -webkit-line-clamp: 4; }

/* ===== 详情页 ===== */
.article-detail {
  max-width: 760px;
  margin: 40px auto;
  background: white;
  padding: 40px 48px;
  border-radius: 4px;
  box-shadow: var(--wsj-card-shadow);
}
.article-detail h1 {
  font-family: var(--wsj-font-title);
  font-size: 36px;
  line-height: 1.25;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
  padding-top: 20px;
  border-top: 3px solid var(--wsj-gold);
}
.article-detail .meta {
  color: var(--wsj-text-muted);
  font-size: 14px;
  border-bottom: 1px solid var(--wsj-border);
  padding-bottom: 16px;
  margin-bottom: 20px;
}
.article-detail .tab-bar {
  display: flex;
  gap: 8px;
  border-bottom: 2px solid var(--wsj-border);
  margin-bottom: 24px;
}
.article-detail .tab-bar button {
  background: none;
  border: none;
  padding: 8px 16px;
  font-family: var(--wsj-font-sans);
  font-weight: 600;
  color: var(--wsj-text-secondary);
  cursor: pointer;
  border-bottom: 3px solid transparent;
  transition: 0.2s;
}
.article-detail .tab-bar button.active {
  color: var(--wsj-accent);
  border-bottom-color: var(--wsj-accent);
}
.article-detail .tab-content p {
  margin-bottom: 1.8em;
  text-indent: 2em;
  font-size: 17px;
  line-height: 1.75;
  color: #2d3a45;
}
.article-detail .tab-content p:first-of-type::first-letter {
  float: left;
  font-size: 3.2em;
  line-height: 0.9;
  margin-right: 10px;
  margin-top: 4px;
  color: var(--wsj-primary);
  font-family: var(--wsj-font-title);
  font-weight: bold;
}
.article-detail .tab-content img {
  max-width: 100%;
  border-radius: 4px;
  margin: 16px 0;
}

/* ===== 加载更多按钮 ===== */
.load-more-btn {
  display: block;
  margin: 24px auto;
  padding: 12px 32px;
  background: var(--wsj-accent);
  color: white;
  border: none;
  border-radius: 4px;
  font-family: var(--wsj-font-sans);
  font-size: 14px;
  cursor: pointer;
  transition: opacity 0.2s;
}
.load-more-btn:hover { opacity: 0.9; }

/* ===== 页脚 ===== */
.site-footer {
  background: var(--wsj-primary);
  color: white;
  padding: 24px 0;
  font-size: 14px;
  font-family: var(--wsj-font-sans);
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.footer-page-links {
  display: flex;
  gap: 24px;
}
.footer-page-links a {
  color: rgba(255,255,255,0.6);
  font-size: 13px;
  transition: color 0.2s;
  letter-spacing: 0.3px;
}
.footer-page-links a:hover,
.footer-page-links a.active {
  color: var(--wsj-gold);
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .article-grid {
    grid-template-columns: 1fr;
  }
  .article-grid .featured {
    grid-column: span 1;
  }
  .article-grid .featured h2 { font-size: 20px; }
  .article-detail {
    padding: 16px;
    margin: 20px 8px;
  }
  .article-detail h1 { font-size: 24px; }
  .category-nav { gap: 12px; }
}

/* ===== About & Contact Pages ===== */
/* ===== Simple Pages (About, Contact) ===== */
.page-simple {
  max-width: 700px;
  margin: 0 auto;
  padding-top: 40px;
  padding-bottom: 48px;
}
.page-head {
  margin-bottom: 36px;
}
.page-head h1 {
  font-family: var(--wsj-font-title);
  font-size: 32px;
  color: var(--wsj-primary);
  margin-bottom: 10px;
}
.page-head p {
  color: var(--wsj-text-secondary);
  font-size: 15px;
  line-height: 1.6;
}

.simple-list {
  display: flex;
  flex-direction: column;
  gap: 28px;
  margin-bottom: 40px;
}
.simple-item {
  padding-bottom: 28px;
  border-bottom: 1px solid var(--wsj-border);
}
.simple-item:last-child {
  border-bottom: none;
}
.simple-item h2 {
  font-family: var(--wsj-font-title);
  font-size: 20px;
  color: var(--wsj-primary);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.sm-icon {
  color: var(--wsj-accent);
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}
.sm-body {
  color: var(--wsj-text-secondary);
  font-size: 15px;
  line-height: 1.75;
}

/* Values inline */
.simple-values {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  padding-top: 8px;
}
.sv-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--wsj-text-secondary);
  font-family: var(--wsj-font-sans);
}
.sv-icon {
  color: var(--wsj-accent);
  display: inline-flex;
  align-items: center;
}

/* Contact list */
.simple-contact {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 0;
  border-bottom: 1px solid var(--wsj-border);
  text-decoration: none;
  color: inherit;
  transition: color 0.2s;
}
.simple-contact:last-child {
  border-bottom: none;
}
.simple-contact:hover {
  color: var(--wsj-accent);
}
.simple-contact .sm-icon {
  color: var(--wsj-text-muted);
}
.simple-contact:hover .sm-icon {
  color: var(--wsj-accent);
}
.sc-label {
  font-family: var(--wsj-font-sans);
  font-size: 13px;
  font-weight: 500;
  color: var(--wsj-text-muted);
  min-width: 80px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.sc-value {
  font-family: var(--wsj-font-body);
  font-size: 15px;
  color: var(--wsj-primary);
}
.contact-footnote {
  text-align: center;
  margin-top: 32px;
  color: var(--wsj-text-muted);
  font-size: 13px;
  font-style: italic;
  font-family: var(--wsj-font-sans);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .page-head h1 {
    font-size: 26px;
  }
  .sc-label {
    min-width: 60px;
  }
}