/* ========================================
   益会员政务风格主题 — 参考 sbj.cnipa.gov.cn
   蓝色主调 / 红色点缀 / 庄重规整 / 响应式
   ======================================== */

/* --- CSS 变量 --- */
:root {
  --primary: #1a5fb4;        /* 政务蓝 */
  --primary-dark: #12407a;   /* 深蓝 */
  --primary-light: #2a7de1;  /* 亮蓝 hover */
  --accent: #c00;            /* 国旗红 */
  --gold: #c9a959;           /* 金色点缀 */
  --text: #1f2937;           /* 正文 */
  --text-secondary: #4b5563; /* 次要文字 */
  --text-muted: #6b7280;     /* 灰色说明 */
  --border: #e5e7eb;         /* 边框 */
  --bg: #ffffff;             /* 背景白 */
  --bg-alt: #f5f7fa;         /* 灰背景 */
  --bg-header: #1a5fb4;      /* 顶栏深蓝 */
}

/* --- 重置 --- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 16px; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-light); }
img { max-width: 100%; height: auto; }

/* --- 容器 --- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
}

/* ========================================
   顶部导航（logo + 主菜单）
   ======================================== */

/* 蓝色条顶栏 */
.top-bar {
  background: var(--bg-header);
  color: #fff;
  font-size: 13px;
  border-bottom: 2px solid var(--primary-dark);
}
.top-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 36px;
}
.top-bar a { color: rgba(255,255,255,0.85); }
.top-bar a:hover { color: #fff; }

/* LOGO + 主菜单 */
.header {
  background: #fff;
  border-bottom: 3px solid var(--primary);
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo {
  font-size: 22px;
  font-weight: 700;
  color: var(--primary-dark);
  letter-spacing: 1px;
  display: flex;
  align-items: center;
  gap: 12px;
}
/* 品牌名右上角的 ™ 标记 */
.logo-tm {
  font-size: 0.45em;
  font-weight: 600;
  vertical-align: super;
  line-height: 0;
  margin-left: 1px;
  letter-spacing: 0;
}
.logo-icon {
  width: 40px; height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 18px;
}
.logo-sub {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 400;
  margin-left: 4px;
}

/* 主菜单 */
.nav ul { display: flex; gap: 0; list-style: none; }
.nav a {
  display: block;
  padding: 26px 20px;
  color: var(--text);
  font-size: 15px;
  font-weight: 500;
  position: relative;
}
.nav a:hover, .nav a.current {
  color: var(--primary);
}
.nav a.current::after {
  content: "";
  position: absolute;
  bottom: 0; left: 50%;
  transform: translateX(-50%);
  width: 24px; height: 3px;
  background: var(--accent);
  border-radius: 2px;
}

/* ========================================
   Hero 横幅（政务 Banner）
   ======================================== */
.hero {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
  color: #fff;
  padding: 48px 0;
}
.hero .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}
.hero-text h1 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: 2px;
}
.hero-text p {
  font-size: 15px;
  opacity: 0.9;
  max-width: 560px;
  line-height: 1.8;
}
.hero-actions {
  display: flex;
  gap: 12px;
}
.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: #a00; color: #fff; transform: translateY(-1px); }
.btn-outline { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,0.6); }
.btn-outline:hover { background: rgba(255,255,255,0.15); color: #fff; }

/* ========================================
   主体布局
   ======================================== */
.main { padding: 32px 0 48px; }

/* 两栏栅格 */
.grid-2 { display: grid; grid-template-columns: 2fr 1fr; gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

/* 版块卡片 */
.section-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 4px;
}
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 20px;
  border-bottom: 2px solid var(--primary);
  background: linear-gradient(90deg, #f0f5ff 0%, #fff 100%);
}
.section-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--primary-dark);
  display: flex;
  align-items: center;
  gap: 8px;
}
.section-title::before {
  content: "";
  width: 4px; height: 18px;
  background: var(--accent);
  border-radius: 2px;
}
.section-more {
  font-size: 13px;
  color: var(--text-muted);
}
.section-more:hover { color: var(--primary); }
.section-body { padding: 16px 20px; }

/* 文章列表 */
.article-list { list-style: none; }
.article-list li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 10px 0;
  border-bottom: 1px dashed var(--border);
  gap: 16px;
}
.article-list li:last-child { border-bottom: none; }
.article-list a {
  flex: 1;
  color: var(--text);
  font-size: 14px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.article-list a:hover { color: var(--primary); }
.article-list .date {
  font-size: 13px;
  color: var(--text-muted);
  flex-shrink: 0;
}

/* 红色标题点缀 */
.article-list a.hot::before {
  content: "置顶";
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-size: 11px;
  padding: 1px 6px;
  border-radius: 2px;
  margin-right: 6px;
  vertical-align: middle;
}

/* ========================================
   右侧快捷入口
   ======================================== */
.quick-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.quick-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 18px 12px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 4px;
  transition: all 0.2s;
  color: var(--text);
  font-size: 13px;
}
.quick-item:hover {
  border-color: var(--primary);
  background: #f0f5ff;
  color: var(--primary);
  transform: translateY(-2px);
}
.quick-icon {
  width: 40px; height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 50%;
  margin-bottom: 8px;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 18px;
}

/* 热门搜索标签 */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-cloud a {
  display: inline-block;
  padding: 5px 12px;
  font-size: 13px;
  border: 1px solid var(--border);
  border-radius: 3px;
  color: var(--text-secondary);
  background: #fff;
  transition: all 0.15s;
}
.tag-cloud a:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* ========================================
   面包屑
   ======================================== */
.breadcrumb {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 20px;
  padding: 10px 16px;
  background: var(--bg-alt);
  border-radius: 4px;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { margin: 0 6px; color: var(--border); }

/* ========================================
   文章详情页
   ======================================== */
.article-main { max-width: 860px; margin: 0 auto; }
.article-header {
  text-align: center;
  padding: 32px 0 24px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 28px;
}
.article-title {
  font-size: 26px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.4;
  margin-bottom: 16px;
}
.article-meta {
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  justify-content: center;
  gap: 20px;
}
.article-meta span::before {
  content: "";
  display: inline-block;
  width: 1px; height: 12px;
  background: var(--border);
  margin-right: 10px;
  vertical-align: middle;
}
.article-meta span:first-child::before { display: none; }

.article-body {
  font-size: 16px;
  line-height: 1.9;
  color: var(--text);
}
.article-body h1, .article-body h2, .article-body h3 {
  margin: 28px 0 14px;
  font-weight: 700;
}
.article-body h2 {
  font-size: 20px;
  padding-left: 10px;
  border-left: 3px solid var(--primary);
  color: var(--primary-dark);
}
.article-body h3 { font-size: 17px; color: var(--text); }
.article-body p { margin: 12px 0; }
.article-body ul, .article-body ol { padding-left: 24px; margin: 12px 0; }
.article-body li { margin: 6px 0; }
.article-body blockquote {
  border-left: 3px solid var(--gold);
  padding: 8px 16px;
  margin: 16px 0;
  background: var(--bg-alt);
  color: var(--text-secondary);
}
.article-body code {
  background: var(--bg-alt);
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 14px;
  color: var(--primary-dark);
}

/* 文章页底部上一篇/下一篇 */
.article-nav {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.article-nav a {
  flex: 1;
  padding: 14px 18px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 14px;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.article-nav a:hover { border-color: var(--primary); color: var(--primary); }
.article-nav .prev::before { content: "« "; color: var(--text-muted); }
.article-nav .next::after { content: " »"; color: var(--text-muted); }

/* ========================================
   分页
   ======================================== */
.pagination {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: 32px;
}
.pagination a, .pagination span {
  display: inline-block;
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: 3px;
  font-size: 14px;
  color: var(--text);
}
.pagination a:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
.pagination .current { background: var(--primary); color: #fff; border-color: var(--primary); }
.pagination .prev, .pagination .next { padding: 8px 16px; }

/* ========================================
   分类/标签页
   ======================================== */
.archive-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary-dark);
  padding-bottom: 12px;
  margin-bottom: 20px;
  border-bottom: 2px solid var(--primary);
}

/* ========================================
   页脚
   ======================================== */
.footer {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.8);
  padding: 40px 0 0;
  font-size: 14px;
  margin-top: 48px;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  padding-bottom: 32px;
}
.footer-col h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255,255,255,0.2);
}
.footer-col ul { list-style: none; }
.footer-col li { margin: 8px 0; }
.footer-col a { color: rgba(255,255,255,0.75); }
.footer-col a:hover { color: #fff; }
.footer-contact li {
  display: flex;
  gap: 8px;
  align-items: baseline;
}
.footer-bottom {
  background: rgba(0,0,0,0.2);
  padding: 16px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.7);
}
.footer-bottom a { color: rgba(255,255,255,0.8); }

/* ========================================
   404
   ======================================== */
.not-found {
  text-align: center;
  padding: 80px 0;
}
.not-found .code {
  font-size: 96px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 16px;
}
.not-found p {
  font-size: 16px;
  color: var(--text-muted);
  margin-bottom: 24px;
}

/* ========================================
   响应式
   ======================================== */

/* 平板 ≤ 960px */
@media (max-width: 960px) {
  .header .container { height: auto; padding: 12px 16px; flex-wrap: wrap; gap: 12px; }
  .nav { width: 100%; }
  .nav ul { flex-wrap: wrap; }
  .nav a { padding: 10px 14px; font-size: 14px; }
  .hero .container { flex-direction: column; text-align: center; }
  .grid-2 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

/* 手机 ≤ 600px */
@media (max-width: 600px) {
  html { font-size: 15px; }
  .container { padding: 0 12px; }
  .top-bar { display: none; }
  .logo { font-size: 18px; }
  .logo-sub { display: none; }
  .nav ul { gap: 0; }
  .nav a { padding: 8px 10px; font-size: 13px; }
  .hero { padding: 28px 0; }
  .hero-text h1 { font-size: 22px; letter-spacing: 1px; }
  .btn { padding: 10px 20px; font-size: 13px; }
  .main { padding: 20px 0 32px; }
  .section-header { padding: 12px 14px; }
  .section-body { padding: 12px 14px; }
  .section-title { font-size: 15px; }
  .article-title { font-size: 22px; }
  .article-list li { flex-direction: column; gap: 2px; padding: 8px 0; }
  .article-list .date { align-self: flex-start; }
  .grid-3 { grid-template-columns: 1fr; }
  .quick-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .article-nav { flex-direction: column; }
}

/* ========================================
   打印友好
   ======================================== */
@media print {
  .top-bar, .header, .hero, .footer, .article-nav, .pagination { display: none; }
  body { background: #fff; }
  .article-main { max-width: 100%; }
}