/* =====================================================
   速光资讯 · 全站样式（纯 CSS，无外部依赖）
   科技蓝杂志风 · 主色 #1677ff
   ===================================================== */

:root {
  --primary: #1677ff;
  --primary-dark: #0958d9;
  --primary-light: #e8f1ff;
  --cyan: #36cfc9;
  --dark: #0b1c30;
  --darker: #071525;
  --text: #1f2d3d;
  --muted: #64748b;
  --border: #e3e8ef;
  --bg: #f4f7fb;
  --radius: 14px;
  --shadow: 0 4px 16px rgba(15, 42, 82, .06);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  color: var(--text);
  background: var(--bg);
  font-size: 15px;
  line-height: 1.75;
}

a { color: inherit; text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--primary); }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }

::selection { background: var(--primary); color: #fff; }
a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 4px; }

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

/* ---------------- 顶部导航 ---------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--dark);
  box-shadow: 0 2px 12px rgba(7, 21, 37, .35);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 28px;
  min-height: 64px;
}

.logo { display: flex; align-items: center; flex-shrink: 0; }
.logo img { height: 34px; width: auto; }

.main-nav { display: flex; align-items: stretch; margin-left: auto; }
.main-nav a {
  position: relative;
  display: flex;
  align-items: center;
  padding: 0 16px;
  font-size: 15px;
  color: rgba(255, 255, 255, .72);
  transition: color .2s ease, background .2s ease;
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 0;
  height: 2px;
  border-radius: 2px 2px 0 0;
  background: transparent;
}
.main-nav a:hover { color: #fff; background: rgba(255, 255, 255, .06); }
.main-nav a.active { color: #fff; font-weight: 600; }
.main-nav a.active::after { background: linear-gradient(90deg, var(--primary), var(--cyan)); }

.btn-site {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 20px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--primary), var(--cyan));
  color: #fff;
  font-weight: 600;
  font-size: 14px;
  box-shadow: 0 4px 14px rgba(22, 119, 255, .4);
  transition: transform .2s ease, filter .2s ease, color .2s ease;
}
.btn-site:hover { color: #fff; filter: brightness(1.08); transform: translateY(-1px); }

/* ---------------- 首页头条大图区 ---------------- */
.hero {
  position: relative;
  overflow: hidden;
  color: #fff;
  background: linear-gradient(135deg, #081428 0%, #0d2547 55%, #123b74 100%);
  padding: 72px 0 80px;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .9), rgba(0, 0, 0, .15));
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .9), rgba(0, 0, 0, .15));
}
.hero::after {
  content: "";
  position: absolute;
  width: 560px;
  height: 560px;
  border-radius: 50%;
  right: -160px;
  top: -200px;
  background: radial-gradient(circle, rgba(22, 119, 255, .38), transparent 65%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 56px;
  align-items: center;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  padding: 6px 16px;
  border-radius: 999px;
  background: rgba(22, 119, 255, .18);
  border: 1px solid rgba(22, 119, 255, .45);
  color: #8cc4ff;
  font-size: 13px;
  letter-spacing: 2px;
}

.hero-title {
  margin: 20px 0 14px;
  font-size: 44px;
  line-height: 1.25;
  font-weight: 800;
  letter-spacing: 3px;
}
.hero-title em {
  font-style: normal;
  background: linear-gradient(90deg, #3c8cff, var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-lead { color: rgba(255, 255, 255, .75); font-size: 16px; max-width: 34em; }

.hero-actions { margin-top: 32px; display: flex; flex-wrap: wrap; gap: 14px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 11px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  border: 1px solid transparent;
  transition: all .2s ease;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--cyan));
  color: #fff;
  box-shadow: 0 6px 18px rgba(22, 119, 255, .35);
}
.btn-primary:hover { color: #fff; transform: translateY(-2px); box-shadow: 0 10px 24px rgba(22, 119, 255, .45); }
.btn-ghost { border-color: rgba(255, 255, 255, .35); color: #fff; }
.btn-ghost:hover { color: #fff; background: rgba(255, 255, 255, .1); border-color: rgba(255, 255, 255, .6); }

/* 头条卡片 */
.hero-card {
  position: relative;
  overflow: hidden;
  background: rgba(255, 255, 255, .07);
  border: 1px solid rgba(255, 255, 255, .16);
  border-radius: 18px;
  padding: 30px 32px;
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  box-shadow: 0 20px 50px rgba(4, 16, 33, .45);
}
.hero-card-flag {
  position: absolute;
  top: 0;
  right: 0;
  padding: 4px 16px 4px 20px;
  border-radius: 0 0 0 14px;
  background: linear-gradient(135deg, var(--primary), var(--cyan));
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
}
.hero-card-tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 6px;
  background: rgba(54, 207, 201, .16);
  border: 1px solid rgba(54, 207, 201, .4);
  color: #7ee7e2;
  font-size: 12px;
  margin-bottom: 14px;
}
.hero-card-title {
  display: block;
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  line-height: 1.5;
  margin-bottom: 10px;
}
.hero-card-title:hover { color: #8cc4ff; }
.hero-card-desc { color: rgba(255, 255, 255, .72); font-size: 14px; line-height: 1.9; margin-bottom: 16px; }
.hero-card-meta { display: flex; flex-wrap: wrap; gap: 16px; font-size: 13px; color: rgba(255, 255, 255, .5); margin-bottom: 18px; }
.hero-card-link { color: #69b1ff; font-weight: 600; font-size: 14px; }
.hero-card-link:hover { color: #8cc4ff; }

/* ---------------- 通用区块 ---------------- */
.section-featured { padding: 48px 0 8px; }
.section-layout { padding: 44px 0 0; }

.section-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; }

.section-title {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.35;
  position: relative;
  padding-left: 14px;
}
.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 5px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--primary), var(--cyan));
}
.section-more { font-size: 14px; color: var(--muted); font-weight: 500; flex-shrink: 0; }
.section-more:hover { color: var(--primary); }

/* ---------------- 文章卡片 ---------------- */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

.card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 12px 30px rgba(15, 42, 82, .12); border-color: #bcd7ff; }

.card-cover { position: relative; height: 150px; overflow: hidden; }
.post-card-cover { position: relative; min-height: 190px; overflow: hidden; }
.card-cover::before, .post-card-cover::before {
  content: "";
  position: absolute;
  width: 170px;
  height: 170px;
  border-radius: 50%;
  right: -45px;
  top: -70px;
  background: rgba(255, 255, 255, .14);
}
.card-cover::after, .post-card-cover::after {
  content: "";
  position: absolute;
  width: 90px;
  height: 90px;
  border-radius: 50%;
  right: 80px;
  bottom: -55px;
  background: rgba(255, 255, 255, .09);
}

.cv-product { background: linear-gradient(135deg, #1677ff, #36cfc9); }
.cv-industry { background: linear-gradient(135deg, #0958d9, #69b1ff); }
.cv-activity { background: linear-gradient(135deg, #1d39c4, #4096ff); }
.cv-log { background: linear-gradient(135deg, #0b1c30, #1677ff); }

.cover-tag {
  position: absolute;
  left: 14px;
  top: 14px;
  z-index: 1;
  padding: 3px 12px;
  border-radius: 6px;
  background: rgba(255, 255, 255, .92);
  color: var(--primary-dark);
  font-size: 12px;
  font-weight: 600;
}

.card-body { display: flex; flex-direction: column; flex: 1; padding: 20px 22px 22px; }
.card-title { font-size: 17px; font-weight: 700; line-height: 1.6; margin-bottom: 8px; }
.card-title a { color: inherit; }
.card-title a:hover { color: var(--primary); }
.card-excerpt {
  flex: 1;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  max-height: 3.6em;
}
.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 5px 16px;
  font-size: 12.5px;
  color: #94a3b8;
  border-top: 1px dashed var(--border);
  padding-top: 12px;
}

/* ---------------- 主内容 + 侧栏布局 ---------------- */
.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 32px;
  align-items: start;
}
.content-main { min-width: 0; }

/* 首页栏目文章列表 */
.cat-block {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px 26px 12px;
  margin-bottom: 24px;
}
.cat-block-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.cat-block-title {
  font-size: 19px;
  font-weight: 700;
  position: relative;
  padding-left: 12px;
}
.cat-block-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 4px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--primary), var(--cyan));
}

.article-list li + li { border-top: 1px dashed var(--border); }
.article-item { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 13px 0; }
.article-item:hover .article-title { color: var(--primary); }
.article-title {
  flex: 1;
  min-width: 0;
  font-size: 15px;
  line-height: 1.7;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.article-date {
  flex-shrink: 0;
  font-size: 12.5px;
  color: #94a3b8;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2px 10px;
}

/* ---------------- 侧栏组件 ---------------- */
.sidebar { display: flex; flex-direction: column; gap: 24px; position: sticky; top: 88px; }

.widget {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
}
.widget-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
  position: relative;
  padding-left: 11px;
}
.widget-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 5px;
  bottom: 5px;
  width: 4px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--primary), var(--cyan));
}

.hot-list li + li { border-top: 1px dashed var(--border); }
.hot-item { display: flex; align-items: center; gap: 12px; padding: 11px 0; }
.hot-rank {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 6px;
  background: #eef2f7;
  color: #94a3b8;
  font-size: 12px;
  font-style: normal;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hot-rank.top { background: linear-gradient(135deg, var(--primary), var(--cyan)); color: #fff; }
.hot-item:hover .hot-title { color: var(--primary); }
.hot-title {
  font-size: 14px;
  line-height: 1.6;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.about-widget p { font-size: 13.5px; color: var(--muted); line-height: 1.9; margin-bottom: 16px; }
.about-widget .btn { width: 100%; padding: 9px 0; font-size: 14px; margin-bottom: 12px; }
.help-link { display: block; text-align: center; font-size: 13px; color: var(--muted); }
.help-link:hover { color: var(--primary); }

/* ---------------- 面包屑 ---------------- */
.breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 13px; color: var(--muted); }
.breadcrumb .sep { color: #c0cbd8; font-size: 12px; }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .current { color: var(--text); font-weight: 500; }
.article-crumb { margin-bottom: 18px; }

/* ---------------- 栏目页横幅 ---------------- */
.page-hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #081428, #0d2547 60%, #14417e);
  color: #fff;
  padding: 42px 0 46px;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .04) 1px, transparent 1px);
  background-size: 44px 44px;
}
.page-hero .container { position: relative; z-index: 1; }
.page-hero .breadcrumb { margin-bottom: 14px; color: rgba(255, 255, 255, .55); }
.page-hero .breadcrumb a { color: rgba(255, 255, 255, .75); }
.page-hero .breadcrumb a:hover { color: #fff; }
.page-hero .breadcrumb .current { color: rgba(255, 255, 255, .9); font-weight: 500; }
.page-hero-title { font-size: 30px; font-weight: 800; letter-spacing: 2px; }
.page-hero-desc { margin-top: 10px; color: rgba(255, 255, 255, .7); font-size: 14.5px; max-width: 42em; }

/* ---------------- 列表页文章条目 ---------------- */
.post-list { display: flex; flex-direction: column; gap: 24px; }

.post-card {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.post-card:hover { transform: translateY(-3px); box-shadow: 0 12px 30px rgba(15, 42, 82, .12); border-color: #bcd7ff; }

.post-card-body { padding: 24px 26px; display: flex; flex-direction: column; }
.post-card-title { font-size: 19px; font-weight: 700; line-height: 1.55; margin-bottom: 10px; }
.post-card-title a { color: inherit; }
.post-card-title a:hover { color: var(--primary); }
.post-card-excerpt {
  flex: 1;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.85;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  max-height: 3.7em;
}
.post-card-meta { display: flex; flex-wrap: wrap; gap: 5px 16px; font-size: 12.5px; color: #94a3b8; }

/* 栏目标签 */
.tag {
  display: inline-flex;
  align-self: flex-start;
  padding: 3px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 12px;
}
.tag a { color: inherit; }
.tag-product { background: var(--primary-light); color: var(--primary); }
.tag-industry { background: #e6fbf9; color: #0e9f95; }
.tag-activity { background: #fff3e8; color: #d46b08; }
.tag-log { background: #eef2f7; color: #5b6b80; }

/* ---------------- 分页占位 ---------------- */
.pagination { margin-top: 32px; display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }
.page-link {
  min-width: 38px;
  height: 38px;
  padding: 0 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 14px;
  box-shadow: var(--shadow);
  transition: all .2s ease;
}
.page-link:hover { color: #fff; background: var(--primary); border-color: var(--primary); }
.page-link.active { background: var(--primary); border-color: var(--primary); color: #fff; font-weight: 600; }
.page-link.disabled { color: #b6c2d1; background: #f6f8fb; box-shadow: none; pointer-events: none; }

/* ---------------- 文章详情页 ---------------- */
.article {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 36px 40px 40px;
}
.article-header { border-bottom: 1px solid var(--border); padding-bottom: 22px; margin-bottom: 28px; }
.article-title { font-size: 28px; line-height: 1.5; font-weight: 800; margin: 14px 0 16px; }

.article-meta { font-size: 13px; color: #94a3b8; }
.article-meta .meta-item + .meta-item::before { content: "·"; margin: 0 10px; color: #cbd5e1; }

.article-content { font-size: 15.5px; line-height: 2; color: #2a3949; }
.article-content p { margin-bottom: 18px; }
.article-content .lede {
  font-size: 16.5px;
  color: #33475e;
  line-height: 2;
  padding-left: 14px;
  border-left: 3px solid var(--primary);
  border-radius: 2px;
  background: linear-gradient(90deg, rgba(22, 119, 255, .05), transparent 70%);
}
.article-content h2 {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.5;
  margin: 34px 0 16px;
  padding-left: 12px;
  border-left: 4px solid var(--primary);
}
.article-content ul { margin: 0 0 18px; }
.article-content li { position: relative; padding-left: 20px; margin-bottom: 10px; }
.article-content li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 12px;
  width: 6px;
  height: 6px;
  border-radius: 2px;
  background: var(--primary);
}
.article-content strong { color: var(--primary-dark); }

/* 上一篇 / 下一篇 */
.post-nav { margin-top: 32px; display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.post-nav-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.post-nav-item.next { text-align: right; align-items: flex-end; }
.post-nav-label { font-size: 12px; color: #94a3b8; letter-spacing: 3px; }
.post-nav-title { font-size: 15px; font-weight: 600; line-height: 1.6; }
.post-nav-title a:hover { color: var(--primary); }
.post-nav-title .off { color: #b6c2d1; font-weight: 400; }

/* 相关推荐 */
.related { margin-top: 36px; }
.related .section-title { font-size: 20px; margin-bottom: 20px; }

/* ---------------- 页脚 ---------------- */
.site-footer { margin-top: 64px; background: var(--darker); color: rgba(255, 255, 255, .62); }

.footer-grid { display: grid; grid-template-columns: 2.2fr 1fr 1fr; gap: 48px; padding: 56px 0 44px; }
.footer-brand img { height: 32px; width: auto; margin-bottom: 18px; }
.footer-brand p { font-size: 13.5px; line-height: 1.9; color: rgba(255, 255, 255, .5); max-width: 30em; }

.footer-col-title {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
  position: relative;
  padding-left: 12px;
}
.footer-col-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 5px;
  bottom: 5px;
  width: 3px;
  border-radius: 2px;
  background: var(--primary);
}
.footer-col a {
  display: block;
  padding: 5px 0;
  font-size: 14px;
  color: rgba(255, 255, 255, .6);
  transition: color .2s ease, transform .2s ease;
}
.footer-col a:hover { color: #69b1ff; transform: translateX(3px); }

.footer-copy {
  border-top: 1px solid rgba(255, 255, 255, .08);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, .35);
  letter-spacing: .5px;
}

/* ---------------- 响应式 ---------------- */
@media (max-width: 1024px) {
  .layout { grid-template-columns: minmax(0, 1fr) 300px; gap: 24px; }
  .hero-inner { gap: 36px; }
}

@media (max-width: 960px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  .hero { padding: 52px 0 56px; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-title { font-size: 36px; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .post-card { grid-template-columns: 1fr; }
  .post-card-cover { min-height: 170px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 760px) {
  .header-inner { flex-wrap: wrap; min-height: 0; padding: 10px 0; gap: 6px 12px; }
  .logo img { height: 30px; }
  .btn-site { margin-left: auto; padding: 7px 16px; font-size: 13px; }
  .main-nav {
    order: 3;
    width: 100%;
    margin-left: 0;
    flex-wrap: wrap;
    gap: 2px;
    margin-top: 6px;
    padding-top: 8px;
    border-top: 1px solid rgba(255, 255, 255, .1);
  }
  .main-nav a { padding: 7px 10px; font-size: 14px; }
  .main-nav a::after { display: none; }
  .main-nav a.active { background: rgba(22, 119, 255, .28); border-radius: 8px; }
}

@media (max-width: 620px) {
  .card-grid { grid-template-columns: 1fr; }
  .card-cover { height: 130px; }
  .post-card-cover { min-height: 150px; }
  .hero { padding: 40px 0 44px; }
  .hero-title { font-size: 30px; letter-spacing: 2px; }
  .hero-card { padding: 22px 20px; }
  .hero-card-title { font-size: 18px; }
  .section-featured { padding: 36px 0 8px; }
  .section-title { font-size: 21px; }
  .page-hero { padding: 30px 0 34px; }
  .page-hero-title { font-size: 24px; }
  .cat-block { padding: 18px 18px 10px; }
  .article { padding: 26px 20px 30px; }
  .article-title { font-size: 22px; }
  .article-content { font-size: 15px; }
  .post-nav { grid-template-columns: 1fr; }
  .post-nav-item.next { text-align: left; align-items: flex-start; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .site-footer { margin-top: 48px; }
}