/* ===== 全局重置与基础样式 ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "Source Han Sans CN", "Noto Sans SC", "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  color: #2c3e50;
  background: #f5f7fa;
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a { color: #1a3a5c; text-decoration: none; transition: color .25s; }
a:hover { color: #2c5f8a; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }

/* ===== 配色变量 ===== */
:root {
  --primary: #1a3a5c;
  --primary-dark: #0f2942;
  --primary-light: #2c5f8a;
  --accent: #3a7cb8;
  --bg-light: #e8eef5;
  --bg-page: #f5f7fa;
  --text-dark: #2c3e50;
  --text-mid: #5a6c7d;
  --text-light: #8a9bab;
  --border: #dce4ed;
  --white: #ffffff;
  --shadow-sm: 0 2px 8px rgba(15,41,66,.06);
  --shadow-md: 0 6px 20px rgba(15,41,66,.08);
  --shadow-lg: 0 12px 40px rgba(15,41,66,.12);
  --radius: 8px;
  --radius-lg: 12px;
}

/* ===== 容器 ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 900px; margin: 0 auto; padding: 0 24px; }

/* ===== 顶部导航 ===== */
.header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.96);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 20px; font-weight: 700; color: var(--primary);
  letter-spacing: .5px;
}
.logo-icon {
  width: 38px; height: 38px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
}
.logo-text small { display: block; font-size: 11px; font-weight: 400; color: var(--text-mid); letter-spacing: 1px; }
.nav-menu { display: flex; gap: 6px; }
.nav-menu a {
  display: flex; align-items: center; gap: 6px;
  padding: 8px 16px; border-radius: 6px;
  font-size: 15px; color: var(--text-dark); font-weight: 500;
  transition: all .25s;
}
.nav-menu a:hover { background: var(--bg-light); color: var(--primary); }
.nav-menu a.active { background: var(--primary); color: #fff; }
.nav-menu a svg { width: 16px; height: 16px; }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--primary); margin: 5px 0; transition: .3s; }

/* ===== Banner ===== */
.banner {
  position: relative;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
  color: #fff;
  overflow: hidden;
}
.banner-home {
  min-height: 480px;
  display: flex; align-items: center;
  background: linear-gradient(135deg, rgba(15,41,66,.92) 0%, rgba(26,58,92,.88) 100%),
              url('../images/banner.jpg') center/cover no-repeat;
}
.banner-home::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at 80% 30%, rgba(58,124,184,.25), transparent 50%);
}
.banner-inner { position: relative; z-index: 2; padding: 80px 0; max-width: 760px; }
.banner-inner h1 {
  font-size: 40px; font-weight: 700; line-height: 1.3; margin-bottom: 20px;
  letter-spacing: 1px;
}
.banner-inner p { font-size: 18px; opacity: .9; margin-bottom: 32px; line-height: 1.8; }
.banner-cta {
  display: inline-flex; align-items: center; gap: 8px;
  background: #fff; color: var(--primary);
  padding: 14px 32px; border-radius: 6px; font-weight: 600; font-size: 16px;
  transition: all .3s; box-shadow: 0 6px 20px rgba(0,0,0,.15);
}
.banner-cta:hover { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(0,0,0,.2); color: var(--primary); }

/* 子页面 banner */
.page-banner {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
  color: #fff; padding: 60px 0 50px; position: relative; overflow: hidden;
}
.page-banner::after {
  content: ''; position: absolute; right: -100px; top: -50px;
  width: 400px; height: 400px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,.06), transparent 70%);
}
.page-banner h1 { font-size: 32px; margin-bottom: 12px; position: relative; }
.page-banner .breadcrumb { font-size: 14px; opacity: .8; position: relative; }
.page-banner .breadcrumb a { color: rgba(255,255,255,.85); }
.page-banner .breadcrumb a:hover { color: #fff; }

/* ===== 通用区块 ===== */
.section { padding: 64px 0; }
.section-alt { background: var(--white); }
.section-head { text-align: center; margin-bottom: 48px; }
.section-head .tag {
  display: inline-block; font-size: 13px; color: var(--accent);
  background: var(--bg-light); padding: 4px 14px; border-radius: 20px;
  margin-bottom: 14px; letter-spacing: 1px;
}
.section-head h2 { font-size: 30px; color: var(--primary); font-weight: 700; margin-bottom: 12px; }
.section-head p { color: var(--text-mid); font-size: 16px; max-width: 640px; margin: 0 auto; }

/* ===== 两大专栏卡片 ===== */
.feature-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.feature-card {
  background: var(--white); border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-md); transition: all .35s;
  border: 1px solid var(--border);
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.feature-card-img { height: 220px; overflow: hidden; position: relative; }
.feature-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.feature-card:hover .feature-card-img img { transform: scale(1.05); }
.feature-card-body { padding: 28px; }
.feature-card-body h3 {
  font-size: 22px; color: var(--primary); margin-bottom: 12px;
  display: flex; align-items: center; gap: 10px;
}
.feature-card-body h3 .icon-circle {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--bg-light); color: var(--primary);
  display: flex; align-items: center; justify-content: center;
}
.feature-card-body > p { color: var(--text-mid); margin-bottom: 18px; font-size: 15px; }
.feature-list li {
  padding: 8px 0; border-bottom: 1px dashed var(--border);
  font-size: 14px; color: var(--text-dark);
  display: flex; align-items: center; gap: 8px;
}
.feature-list li:last-child { border-bottom: none; }
.feature-list li::before {
  content: ''; width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent); flex-shrink: 0;
}
.feature-more {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 18px; color: var(--primary); font-weight: 600; font-size: 14px;
}
.feature-more:hover { gap: 10px; }

/* ===== 知识速览（高频问题） ===== */
.faq-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.faq-item {
  background: var(--white); padding: 24px 28px; border-radius: var(--radius);
  border-left: 4px solid var(--accent); box-shadow: var(--shadow-sm);
  transition: all .3s;
}
.faq-item:hover { box-shadow: var(--shadow-md); transform: translateX(4px); }
.faq-item h4 { font-size: 17px; color: var(--primary); margin-bottom: 10px; font-weight: 600; }
.faq-item p { font-size: 14px; color: var(--text-mid); line-height: 1.8; }
.faq-item .label {
  display: inline-block; font-size: 12px; padding: 2px 10px; border-radius: 4px;
  background: var(--bg-light); color: var(--primary-light); margin-bottom: 8px;
}

/* ===== 最新更新 ===== */
.update-list { background: var(--white); border-radius: var(--radius-lg); padding: 8px 0; box-shadow: var(--shadow-sm); }
.update-item {
  display: flex; align-items: center; gap: 16px;
  padding: 18px 28px; border-bottom: 1px solid var(--border);
  transition: background .25s;
}
.update-item:last-child { border-bottom: none; }
.update-item:hover { background: #fafbfd; }
.update-date {
  flex-shrink: 0; width: 64px; text-align: center;
  background: var(--bg-light); border-radius: 6px; padding: 8px 0;
}
.update-date .day { display: block; font-size: 20px; font-weight: 700; color: var(--primary); line-height: 1; }
.update-date .ym { display: block; font-size: 12px; color: var(--text-mid); margin-top: 4px; }
.update-text { flex: 1; }
.update-text h4 { font-size: 15px; color: var(--text-dark); font-weight: 500; margin-bottom: 4px; }
.update-text .tag-new { font-size: 12px; color: #d9534f; margin-left: 8px; }
.update-text p { font-size: 13px; color: var(--text-light); }

/* ===== 专栏页布局 ===== */
.column-layout { display: grid; grid-template-columns: 260px 1fr; gap: 36px; padding: 48px 0; }
.sidebar {
  position: sticky; top: 96px; align-self: start;
  background: var(--white); border-radius: var(--radius-lg);
  padding: 24px; box-shadow: var(--shadow-sm);
  max-height: calc(100vh - 120px); overflow-y: auto;
}
.sidebar h3 {
  font-size: 16px; color: var(--primary); margin-bottom: 16px;
  padding-bottom: 12px; border-bottom: 2px solid var(--primary);
  display: flex; align-items: center; gap: 8px;
}
.sidebar-cat { margin-bottom: 18px; }
.sidebar-cat > a {
  display: flex; align-items: center; gap: 8px;
  font-weight: 600; color: var(--primary-dark); font-size: 15px;
  padding: 8px 0;
}
.sidebar-cat ul { padding-left: 20px; margin-top: 6px; }
.sidebar-cat li a {
  display: block; font-size: 13px; color: var(--text-mid);
  padding: 6px 0; border-left: 2px solid transparent; padding-left: 10px;
  transition: all .2s;
}
.sidebar-cat li a:hover { color: var(--primary); border-left-color: var(--accent); }

/* 文章内容 */
.article {
  background: var(--white); border-radius: var(--radius-lg);
  padding: 48px; box-shadow: var(--shadow-sm);
}
.article-header { margin-bottom: 32px; padding-bottom: 24px; border-bottom: 1px solid var(--border); }
.article-header h2 { font-size: 28px; color: var(--primary); margin-bottom: 10px; }
.article-meta { font-size: 13px; color: var(--text-light); display: flex; gap: 18px; }
.article h3 {
  font-size: 22px; color: var(--primary-dark); margin: 36px 0 16px;
  padding-left: 14px; border-left: 4px solid var(--accent);
}
.article h4 { font-size: 18px; color: var(--primary); margin: 24px 0 12px; }
.article p { margin-bottom: 16px; color: var(--text-dark); font-size: 15px; }
.article ul, .article ol { margin: 12px 0 16px 24px; }
.article ul li { list-style: disc; margin-bottom: 8px; font-size: 15px; }
.article ol li { list-style: decimal; margin-bottom: 8px; font-size: 15px; }
.article strong { color: var(--primary-dark); }
.article blockquote {
  background: var(--bg-light); border-left: 4px solid var(--accent);
  padding: 16px 20px; margin: 20px 0; border-radius: 0 6px 6px 0;
  font-size: 14px; color: var(--text-mid);
}
.article .tip-box {
  background: #fef9e7; border: 1px solid #f9e79f; border-radius: 6px;
  padding: 16px 20px; margin: 20px 0; font-size: 14px;
}
.article .tip-box::before { content: '合规提示：'; font-weight: 700; color: #b7950b; }
.article .danger-box {
  background: #fdedec; border: 1px solid #f5b7b1; border-radius: 6px;
  padding: 16px 20px; margin: 20px 0; font-size: 14px;
}
.article .danger-box::before { content: '风险警示：'; font-weight: 700; color: #c0392b; }
.article .law-box {
  background: #eaf2f8; border: 1px solid #aed6f1; border-radius: 6px;
  padding: 16px 20px; margin: 20px 0; font-size: 14px; color: #1a5276;
}
.article .law-box::before { content: '法条依据：'; font-weight: 700; }

/* 章节锚点块 */
.chapter-block { margin-bottom: 48px; scroll-margin-top: 90px; }
.chapter-block:last-child { margin-bottom: 0; }

/* ===== 模板库 ===== */
.template-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.template-card {
  background: var(--white); border-radius: var(--radius-lg); padding: 28px;
  box-shadow: var(--shadow-sm); transition: all .3s; border-top: 3px solid var(--accent);
  cursor: pointer;
}
.template-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.template-card .tpl-icon {
  width: 52px; height: 52px; border-radius: 10px;
  background: linear-gradient(135deg, var(--bg-light), #d4e2f0);
  display: flex; align-items: center; justify-content: center;
  color: var(--primary); margin-bottom: 18px;
}
.template-card h4 { font-size: 17px; color: var(--primary-dark); margin-bottom: 10px; }
.template-card p { font-size: 13px; color: var(--text-mid); margin-bottom: 16px; line-height: 1.7; min-height: 66px; }
.template-card .tpl-meta {
  display: flex; justify-content: space-between; align-items: center;
  font-size: 12px; color: var(--text-light); padding-top: 14px; border-top: 1px dashed var(--border);
}
.template-card .tpl-view {
  color: var(--primary); font-weight: 600; display: inline-flex; align-items: center; gap: 4px;
}

/* 模板模态框 */
.modal-overlay {
  display: none; position: fixed; inset: 0; background: rgba(15,41,66,.6);
  z-index: 1000; justify-content: center; align-items: center; padding: 20px;
}
.modal-overlay.active { display: flex; }
.modal {
  background: var(--white); border-radius: var(--radius-lg);
  max-width: 800px; width: 100%; max-height: 85vh; overflow: hidden;
  display: flex; flex-direction: column; box-shadow: var(--shadow-lg);
}
.modal-header {
  padding: 20px 28px; border-bottom: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center;
  background: var(--primary); color: #fff;
}
.modal-header h3 { font-size: 18px; }
.modal-close { background: none; border: none; color: #fff; font-size: 24px; cursor: pointer; line-height: 1; }
.modal-body { padding: 28px; overflow-y: auto; flex: 1; }
.modal-body pre {
  white-space: pre-wrap; word-wrap: break-word; font-family: inherit;
  font-size: 14px; line-height: 1.9; color: var(--text-dark);
  background: #fafbfd; padding: 20px; border-radius: 6px; border: 1px solid var(--border);
}

/* ===== 判例页 ===== */
.case-filters {
  display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 32px;
  background: var(--white); padding: 16px 20px; border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.case-filter {
  padding: 6px 18px; border-radius: 20px; font-size: 14px;
  background: var(--bg-light); color: var(--text-mid); cursor: pointer;
  border: none; transition: all .25s;
}
.case-filter.active, .case-filter:hover { background: var(--primary); color: #fff; }
.case-card {
  background: var(--white); border-radius: var(--radius-lg); padding: 28px 32px;
  margin-bottom: 20px; box-shadow: var(--shadow-sm); border-left: 4px solid var(--accent);
  transition: all .3s;
}
.case-card:hover { box-shadow: var(--shadow-md); }
.case-card-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 14px; flex-wrap: wrap; gap: 10px; }
.case-card-header h3 { font-size: 19px; color: var(--primary-dark); }
.case-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.case-tag {
  font-size: 12px; padding: 3px 10px; border-radius: 4px;
  background: var(--bg-light); color: var(--primary-light);
}
.case-tag.red { background: #fdedec; color: #c0392b; }
.case-tag.green { background: #e8f8f5; color: #1e8449; }
.case-section { margin-top: 14px; }
.case-section h4 { font-size: 14px; color: var(--primary); margin-bottom: 6px; display: flex; align-items: center; gap: 6px; }
.case-section p { font-size: 14px; color: var(--text-mid); line-height: 1.8; }
.case-verdict {
  margin-top: 14px; padding: 14px 18px;
  background: #f4f9fd; border-radius: 6px; font-size: 14px; color: var(--text-dark);
}
.case-verdict strong { color: var(--primary); }

/* ===== 关于页 ===== */
.about-hero {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center;
  padding: 60px 0;
}
.about-hero-img { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); }
.about-hero-text h2 { font-size: 30px; color: var(--primary); margin-bottom: 18px; }
.about-hero-text p { color: var(--text-mid); margin-bottom: 14px; font-size: 15px; }
.principle-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin-top: 32px; }
.principle-item {
  background: var(--white); padding: 28px; border-radius: var(--radius);
  box-shadow: var(--shadow-sm); display: flex; gap: 16px;
}
.principle-item .pi-icon {
  width: 48px; height: 48px; border-radius: 10px;
  background: var(--bg-light); color: var(--primary);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.principle-item h4 { font-size: 16px; color: var(--primary-dark); margin-bottom: 8px; }
.principle-item p { font-size: 13px; color: var(--text-mid); line-height: 1.7; }

/* ===== 页脚 ===== */
.footer {
  background: var(--primary-dark); color: rgba(255,255,255,.75);
  padding: 40px 0 28px; margin-top: 0;
}
.footer-inner { text-align: center; }
.footer-links {
  display: flex; justify-content: center; gap: 28px; flex-wrap: wrap;
  margin-bottom: 20px; font-size: 14px;
}
.footer-links a { color: rgba(255,255,255,.75); }
.footer-links a:hover { color: #fff; }
.footer-friend {
  margin: 18px 0; padding-top: 18px;
  border-top: 1px solid rgba(255,255,255,.12);
  font-size: 14px;
}
.footer-friend a {
  color: #7fb3e0; font-weight: 500;
}
.footer-friend a:hover { color: #fff; text-decoration: underline; }
.footer-copy { font-size: 13px; color: rgba(255,255,255,.5); }

/* ===== 回到顶部 ===== */
.back-top {
  position: fixed; right: 24px; bottom: 32px;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--primary); color: #fff; border: none; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-md); opacity: 0; visibility: hidden;
  transition: all .3s; z-index: 99;
}
.back-top.show { opacity: 1; visibility: visible; }
.back-top:hover { background: var(--primary-light); transform: translateY(-3px); }

/* ===== 响应式 ===== */
@media (max-width: 960px) {
  .feature-grid, .faq-grid, .template-grid, .principle-grid, .about-hero { grid-template-columns: 1fr; }
  .column-layout { grid-template-columns: 1fr; }
  .sidebar { position: static; max-height: none; }
  .article { padding: 28px 20px; }
  .banner-inner h1 { font-size: 28px; }
  .banner-inner p { font-size: 16px; }
  .nav-menu {
    display: none; position: absolute; top: 72px; left: 0; right: 0;
    background: #fff; flex-direction: column; padding: 12px;
    box-shadow: var(--shadow-md); gap: 2px;
  }
  .nav-menu.open { display: flex; }
  .nav-menu a { padding: 12px 16px; }
  .nav-toggle { display: block; }
  .section { padding: 44px 0; }
  .section-head h2 { font-size: 24px; }
  .template-card p { min-height: auto; }
}
/* ===== 文章列表页 ===== */
.article-list-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.article-list-card {
  background: var(--white); border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-sm); transition: all .3s; border: 1px solid var(--border);
  display: flex; flex-direction: column;
}
.article-list-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.article-list-card .al-img {
  height: 180px; background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,.85);
  font-size: 40px; position: relative; overflow: hidden;
}
.article-list-card .al-img svg { width: 48px; height: 48px; opacity: .8; }
.article-list-card .al-img::after {
  content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, var(--accent), transparent);
}
.article-list-card .al-body { padding: 22px 24px; flex: 1; display: flex; flex-direction: column; }
.al-cat {
  display: inline-block; font-size: 12px; padding: 3px 10px; border-radius: 4px;
  background: var(--bg-light); color: var(--primary-light); margin-bottom: 10px; align-self: flex-start;
}
.al-cat.cat-jingye { background: #e8f0fe; color: #1a56a0; }
.al-cat.cat-mimi { background: #e8f8f5; color: #1e8449; }
.al-cat.cat-zonghe { background: #fef5e7; color: #b7791f; }
.article-list-card h3 { font-size: 17px; color: var(--primary-dark); margin-bottom: 8px; line-height: 1.5; }
.article-list-card h3 a { color: inherit; }
.article-list-card h3 a:hover { color: var(--primary-light); }
.article-list-card p { font-size: 13px; color: var(--text-mid); line-height: 1.7; margin-bottom: 14px; flex: 1; }
.al-meta { font-size: 12px; color: var(--text-light); display: flex; gap: 14px; padding-top: 12px; border-top: 1px dashed var(--border); }
.al-more { margin-left: auto; color: var(--primary); font-weight: 600; }
/* 文章详情页 */
.article-detail { padding: 48px 0; }
.article-detail .article { max-width: 860px; margin: 0 auto; }
.article-detail .article-header { text-align: left; }
.article-detail .article-meta { gap: 16px; }
.article-detail .article-meta .al-cat { margin-bottom: 0; }
.article-nav {
  max-width: 860px; margin: 24px auto 0; display: flex; justify-content: space-between; gap: 16px;
  font-size: 14px;
}
.article-nav a {
  background: var(--white); padding: 12px 20px; border-radius: var(--radius);
  box-shadow: var(--shadow-sm); flex: 1; color: var(--text-mid); transition: all .25s;
}
.article-nav a:hover { color: var(--primary); box-shadow: var(--shadow-md); }
.article-nav .nav-next { text-align: right; }
.article-nav .nav-label { font-size: 12px; color: var(--text-light); display: block; margin-bottom: 4px; }
/* 更新列表可点击 */
.update-item a { color: inherit; }
.update-item a:hover .update-text h4 { color: var(--primary-light); }
/* 分页 */
.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 40px; }
.pagination a, .pagination span {
  padding: 8px 16px; border-radius: 6px; font-size: 14px;
  background: var(--white); color: var(--text-mid); box-shadow: var(--shadow-sm);
}
.pagination a:hover { background: var(--primary); color: #fff; }
.pagination .current { background: var(--primary); color: #fff; }
@media (max-width: 960px) {
  .article-list-grid { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .container { padding: 0 16px; }
  .banner-inner { padding: 56px 0; }
  .banner-inner h1 { font-size: 24px; }
  .page-banner { padding: 40px 0 32px; }
  .page-banner h1 { font-size: 24px; }
  .article { padding: 24px 16px; }
  .article-header h2 { font-size: 22px; }
  .case-card { padding: 20px; }
  .update-item { padding: 14px 16px; flex-wrap: wrap; }
  .article-nav { flex-direction: column; }
  .article-nav .nav-next { text-align: left; }
}