/* ============================================================
   PloGold - News Portal Stylesheet
   ============================================================ */

:root {
  --color-bg:        #f7f7f5;
  --color-surface:   #ffffff;
  --color-border:    #e2e2de;
  --color-text:      #1a1a1a;
  --color-muted:     #666660;
  --color-accent:    #c0392b;
  --color-accent-dk: #962d22;
  --color-tag-bg:    #fff3f2;
  --font-display:    'Playfair Display', Georgia, serif;
  --font-body:       'Source Sans 3', system-ui, sans-serif;
  --radius:          4px;
  --shadow:          0 1px 4px rgba(0,0,0,.08);
  --max-w:           1200px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.65;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--color-accent); }
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 16px; }

/* ── HEADER ─────────────────────────────────────────── */
.site-header {
  background: var(--color-surface);
  border-bottom: 3px solid var(--color-accent);
  position: sticky; top: 0; z-index: 100;
  box-shadow: var(--shadow);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
  gap: 16px;
}
.site-logo { display: flex; flex-direction: column; line-height: 1.1; }
.logo-text {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--color-accent);
  letter-spacing: -0.5px;
}
.logo-tag {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-muted);
}
.main-nav ul { display: flex; list-style: none; gap: 4px; flex-wrap: wrap; }
.main-nav a {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 6px 10px;
  border-radius: var(--radius);
  transition: background .15s, color .15s;
}
.main-nav a:hover { background: var(--color-tag-bg); color: var(--color-accent); }
.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
  color: var(--color-text);
}

/* ── AD BANNER ───────────────────────────────────────── */
.ad-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 8px 0;
  text-align: center;
}

/* ── MAIN LAYOUT ─────────────────────────────────────── */
.page-main { padding: 28px 0 48px; }
.content-grid {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 28px;
  align-items: start;
}

/* ── FEATURED ────────────────────────────────────────── */
.featured-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  grid-template-rows: auto auto;
  gap: 2px;
  margin-bottom: 32px;
  border-radius: var(--radius);
  overflow: hidden;
}
.featured-main { grid-row: span 2; position: relative; height: 380px; }
.featured-side { height: 188px; position: relative; }
.featured-main img, .featured-side img {
  width: 100%; height: 100%; object-fit: cover;
}
.card-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,.78) 0%, transparent 55%);
  display: flex; flex-direction: column; justify-content: flex-end;
  padding: 20px;
}
.card-overlay .cat-tag { margin-bottom: 8px; }
.card-overlay h2 {
  font-family: var(--font-display);
  font-size: 1.4rem; font-weight: 700;
  color: #fff; line-height: 1.25;
}
.card-overlay .meta { margin-top: 6px; font-size: 0.78rem; color: rgba(255,255,255,.7); }

/* ── ARTICLE CARDS ───────────────────────────────────── */
.articles-list { display: flex; flex-direction: column; gap: 0; }
.article-card {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--color-border);
}
.article-card:last-child { border-bottom: none; }
.article-card-thumb {
  width: 160px; height: 108px;
  object-fit: cover;
  border-radius: var(--radius);
  flex-shrink: 0;
}
.article-card-body { display: flex; flex-direction: column; gap: 6px; }
.cat-tag {
  display: inline-block;
  font-size: 0.7rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 1px;
  color: var(--color-accent);
  background: var(--color-tag-bg);
  padding: 2px 8px; border-radius: 2px;
  width: fit-content;
}
.article-card h3 {
  font-family: var(--font-display);
  font-size: 1.05rem; font-weight: 700; line-height: 1.3;
}
.article-card h3 a:hover { color: var(--color-accent); }
.article-excerpt { font-size: 0.88rem; color: var(--color-muted); line-height: 1.5; }
.meta { font-size: 0.78rem; color: var(--color-muted); }

/* ── SIDEBAR ──────────────────────────────────────────── */
.sidebar { display: flex; flex-direction: column; gap: 24px; }
.sidebar-widget {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}
.widget-title {
  font-family: var(--font-display);
  font-size: 0.9rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 1px;
  padding: 12px 16px;
  border-bottom: 2px solid var(--color-accent);
}
.widget-list { list-style: none; }
.widget-list li { border-bottom: 1px solid var(--color-border); }
.widget-list li:last-child { border-bottom: none; }
.widget-list a {
  display: flex; gap: 10px; padding: 10px 16px;
  font-size: 0.85rem; font-weight: 600; line-height: 1.35;
  transition: background .12s;
}
.widget-list a:hover { background: var(--color-tag-bg); color: var(--color-accent); }
.widget-list img { width: 60px; height: 44px; object-fit: cover; border-radius: 2px; flex-shrink: 0; }
.ad-sidebar { padding: 12px; text-align: center; }

/* ── ARTICLE PAGE ─────────────────────────────────────── */
/*.article-page .content-grid { grid-template-columns: 1fr 280px; }*/
.article-header { margin-bottom: 24px; }
.article-header .cat-tag { margin-bottom: 12px; }
.article-title {
  font-family: var(--font-display);
  font-size: 2rem; font-weight: 900;
  line-height: 1.2; margin-bottom: 12px;
}
.article-meta {
  font-size: 0.82rem; color: var(--color-muted);
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
}
.article-banner {
  width: 100%; height: 360px;
  object-fit: cover;
  border-radius: var(--radius);
  margin-bottom: 24px;
}
.article-body { font-size: 1rem; line-height: 1.8; }

/* 修复DeepSeek生成内容里多余的article标签 */
.article-body article { display: contents; }

.article-body h2 {
  font-family: var(--font-display);
  font-size: 1.35rem; font-weight: 700;
  margin: 32px 0 12px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-accent);
}
.article-body p { margin-bottom: 18px; }
.article-body strong { font-weight: 700; }
.article-body em { font-style: italic; }

/* ── 广告位 ───────────────────────────────────────────── */
.ad-in-content {
  margin: 28px 0;
  padding: 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  text-align: center;
  overflow: hidden;
}
.ad-label {
  font-size: 0.68rem;
  text-transform: uppercase; letter-spacing: 1px;
  color: var(--color-muted);
  margin-bottom: 8px;
}

/* 防止自动广告撑爆首页列表 */
.articles-list .google-auto-placed {
  display: none !important;
}

/* ── RELATED ──────────────────────────────────────────── */
.related-articles { margin-top: 40px; padding-top: 24px; border-top: 2px solid var(--color-border); }
.section-title {
  font-family: var(--font-display);
  font-size: 1.1rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 1px;
  margin-bottom: 20px;
  color: var(--color-accent);
}
.related-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.related-card img {
  width: 100%; height: 140px;
  object-fit: cover; border-radius: var(--radius);
  margin-bottom: 8px;
}
.related-card h4 {
  font-family: var(--font-display);
  font-size: 0.95rem; font-weight: 700; line-height: 1.3;
}

/* ── CATEGORY PAGE ───────────────────────────────────── */
.page-heading {
  font-family: var(--font-display);
  font-size: 1.6rem; font-weight: 900;
  margin-bottom: 4px;
  padding-bottom: 12px;
  border-bottom: 3px solid var(--color-accent);
}

/* ── PAGINATION ──────────────────────────────────────── */
.pagination { display: flex; gap: 8px; justify-content: center; margin-top: 32px; }
.pagination a, .pagination span {
  padding: 8px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 0.88rem; font-weight: 600;
}
.pagination .current {
  background: var(--color-accent); color: #fff;
  border-color: var(--color-accent);
}

/* ── FOOTER ──────────────────────────────────────────── */
.site-footer {
  background: #1a1a1a;
  color: rgba(255,255,255,.75);
  padding: 40px 0 0;
  margin-top: 48px;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 32px;
}
.footer-logo {
  font-family: var(--font-display);
  font-size: 1.3rem; font-weight: 900;
  color: #fff; display: block; margin-bottom: 8px;
}
.footer-about p { font-size: 0.85rem; line-height: 1.6; }
.footer-nav ul { list-style: none; }
.footer-nav li { margin-bottom: 6px; }
.footer-nav a { font-size: 0.85rem; opacity: .8; }
.footer-nav a:hover { opacity: 1; color: var(--color-accent); }
.footer-links { display: flex; flex-direction: column; gap: 6px; }
.footer-links a { font-size: 0.82rem; opacity: .7; }
.footer-links a:hover { opacity: 1; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding: 16px 0; text-align: center;
  font-size: 0.78rem; opacity: .5;
}

/* ── RESPONSIVE 900px ────────────────────────────────── */
@media (max-width: 900px) {
  .content-grid { grid-template-columns: 1fr; }
  .article-page .content-grid { grid-template-columns: 1fr; }  /* 加这行 */
  .sidebar { display: none; }
  .featured-grid { grid-template-columns: 1fr; }
  .featured-main { height: 260px; }
  .featured-side { display: none; }
  .footer-inner { grid-template-columns: 1fr; gap: 20px; }
  .article-page .content-grid { grid-template-columns: 1fr; }
}

/* ── RESPONSIVE 640px ────────────────────────────────── */
@media (max-width: 640px) {
  /* 导航 */
  .main-nav {
    display: none;
    position: absolute; top: 60px; left: 0; right: 0;
    background: var(--color-surface);
    border-bottom: 2px solid var(--color-border);
    padding: 12px 16px; z-index: 99;
  }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; gap: 0; }
  .nav-toggle { display: block; }

  /* 文章卡片 */
  .article-card { grid-template-columns: 90px 1fr; gap: 10px; }
  .article-card-thumb { width: 90px; height: 66px; }

  /* 文章详情页 */
  .article-banner { height: 200px; border-radius: 0; margin-left: -16px; margin-right: -16px; width: calc(100% + 32px); }
  .article-title { font-size: 1.4rem; line-height: 1.25; }
  .article-body { font-size: 0.95rem; }
  .article-body h2 { font-size: 1.15rem; margin: 24px 0 10px; }

  /* 广告位手机端全宽 */
  .ad-in-content {
    margin: 20px -16px;
    border-radius: 0;
    border-left: none;
    border-right: none;
    padding: 12px 8px;
  }

  /* 相关文章 */
  .related-grid { grid-template-columns: 1fr; }
  .related-card img { height: 160px; }

  /* 页面间距 */
  .page-main { padding: 16px 0 32px; }
  .article-header { margin-bottom: 16px; }
  .page-heading { font-size: 1.3rem; }

  /* Footer */
  .footer-inner { grid-template-columns: 1fr; gap: 20px; }
}