/*
Theme Name: Codex News Portal
Author: Codex
Description: 新闻门户主题：首页包含头条新闻、最新资讯、行业栏目新闻、右侧热门文章、底部友情链接和关于我们。
Version: 1.0.0
Requires PHP: 7.4
Text Domain: codex-news-portal
*/

:root {
  --bg: #f3f5f8;
  --surface: #fff;
  --text: #1d2939;
  --muted: #667085;
  --line: #d9e0ea;
  --brand: #b4232d;
  --brand-dark: #841922;
  --accent: #007c89;
  --link: #155ca5;
  --dark: #101828;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
}
a { color: var(--link); text-decoration: none; }
a:hover { color: var(--brand); }
img { display: block; max-width: 100%; height: auto; }

.wrap {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}
.branding {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 0 24px;
}
.site-title {
  margin: 0;
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 800;
  line-height: 1.15;
}
.site-title a { color: var(--dark); }
.site-desc {
  margin: 8px 0 0;
  color: var(--muted);
}

.search-form {
  display: flex;
  gap: 8px;
}
.search-field {
  border: 1px solid var(--line);
  border-radius: 4px;
  min-width: 240px;
  padding: 10px 12px;
}
.search-submit,
.read-more {
  background: var(--brand);
  border: 0;
  border-radius: 4px;
  color: #fff;
  cursor: pointer;
  font-weight: 700;
  padding: 10px 16px;
}
.search-submit:hover,
.read-more:hover {
  background: var(--brand-dark);
  color: #fff;
}

.main-nav {
  background: var(--brand);
}
.main-nav ul {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  margin: 0;
  padding: 0;
}
.main-nav a {
  color: #fff;
  display: block;
  font-weight: 700;
  padding: 14px 16px;
}
.main-nav a:hover,
.main-nav .current-menu-item > a {
  background: rgba(0, 0, 0, .18);
  color: #fff;
}

.site-main {
  padding: 28px 0 44px;
}
.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 26px;
  align-items: start;
}
.panel,
.card,
.sidebar-box,
.entry-box,
.archive-head {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
  box-shadow: 0 8px 22px rgba(16, 24, 40, .07);
}
.panel {
  margin-bottom: 24px;
  padding: 22px;
}
.section-title {
  align-items: center;
  border-bottom: 2px solid var(--dark);
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
  padding-bottom: 8px;
}
.section-title h1,
.section-title h2 {
  margin: 0;
  font-size: 22px;
  line-height: 1.3;
}
.section-title span {
  color: var(--muted);
  font-size: 13px;
}

.headline-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(260px, .9fr);
  gap: 22px;
}
.lead h2 {
  margin: 12px 0 8px;
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.2;
}
.lead p,
.card p,
.list-item p {
  color: var(--muted);
}
.meta {
  color: var(--muted);
  font-size: 13px;
}
.meta a { color: var(--muted); }
.side-headlines {
  display: grid;
  gap: 14px;
}
.mini-story {
  border-bottom: 1px solid var(--line);
  padding-bottom: 14px;
}
.mini-story:last-child { border-bottom: 0; }
.mini-story h3 {
  margin: 0 0 6px;
  font-size: 18px;
  line-height: 1.35;
}

.thumb,
.placeholder {
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, #1d2939, #b4232d);
  overflow: hidden;
}
.thumb img {
  height: 100%;
  object-fit: cover;
  width: 100%;
}
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.card { overflow: hidden; }
.card-body { padding: 15px; }
.card h3 {
  margin: 0 0 8px;
  font-size: 19px;
  line-height: 1.35;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.category-box {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 16px;
}
.category-box h3 {
  border-bottom: 2px solid var(--brand);
  margin: 0 0 10px;
  padding-bottom: 8px;
}
.clean-list,
.rank-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.clean-list li,
.rank-list li {
  border-bottom: 1px solid var(--line);
  padding: 10px 0;
}
.clean-list li:last-child,
.rank-list li:last-child { border-bottom: 0; }

.sidebar {
  display: grid;
  gap: 18px;
}
.sidebar-box {
  padding: 18px;
}
.sidebar-box h2 {
  border-bottom: 2px solid var(--dark);
  font-size: 18px;
  margin: 0 0 12px;
  padding-bottom: 8px;
}
.rank-list { counter-reset: rank; }
.rank-list li {
  counter-increment: rank;
  padding-left: 40px;
  position: relative;
}
.rank-list li::before {
  background: var(--brand);
  border-radius: 4px;
  color: #fff;
  content: counter(rank);
  font-weight: 800;
  height: 26px;
  left: 0;
  line-height: 26px;
  position: absolute;
  text-align: center;
  top: 12px;
  width: 28px;
}

.archive-head {
  border-left: 5px solid var(--brand);
  margin-bottom: 18px;
  padding: 20px;
}
.archive-head h1 { margin: 0; }
.list {
  display: grid;
  gap: 18px;
}
.list-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 18px;
  padding: 16px;
}
.list-item h2 {
  font-size: 23px;
  line-height: 1.32;
  margin: 0 0 8px;
}

.entry-box {
  padding: 28px;
}
.entry-title {
  font-size: clamp(30px, 5vw, 44px);
  line-height: 1.2;
  margin: 0 0 10px;
}
.entry-content {
  margin-top: 20px;
}

.site-footer {
  background: var(--dark);
  color: #cbd5e1;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 28px;
  padding: 30px 0;
}
.site-footer h2 {
  color: #fff;
  font-size: 18px;
  margin: 0 0 10px;
}
.site-footer a { color: #fff; }
.footer-links ul,
.footer-menu ul {
  display: grid;
  gap: 7px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.screen-reader-text {
  height: 1px;
  overflow: hidden;
  position: absolute;
  width: 1px;
}

@media (max-width: 960px) {
  .branding {
    align-items: flex-start;
    flex-direction: column;
  }
  .layout,
  .headline-grid,
  .category-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .news-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .search-form,
  .list-item {
    grid-template-columns: 1fr;
  }
  .search-field {
    min-width: 0;
    width: 100%;
  }
  .news-grid {
    grid-template-columns: 1fr;
  }
  .panel,
  .entry-box {
    padding: 18px;
  }
}