/* BK的网络日志 — visual refresh */
:root {
  --bk-ink: #1c2430;
  --bk-muted: #5a6570;
  --bk-accent: #0e7490;
  --bk-accent-soft: rgba(14, 116, 144, 0.12);
  --bk-line: rgba(28, 36, 48, 0.08);
  --bk-code-bg: #1e2936;
}

body {
  background-color: #e8eef3 !important;
  background-image:
    radial-gradient(ellipse 120% 80% at 10% -20%, rgba(14, 116, 144, 0.09), transparent 55%),
    radial-gradient(ellipse 80% 60% at 100% 0%, rgba(28, 36, 48, 0.05), transparent 50%),
    linear-gradient(180deg, #e8eef3 0%, #eef2f6 100%) !important;
  color: var(--bk-ink);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--bk-accent);
  transition: color 0.2s ease;
}

a:hover {
  color: #0a5f76;
}

.headband {
  height: 3px !important;
  background: linear-gradient(90deg, #0e7490, #1c2430 55%, transparent) !important;
}

.site-meta {
  background: linear-gradient(165deg, #1c2430 0%, #243447 100%) !important;
  border-radius: 10px 10px 0 0;
}

.site-meta .site-title {
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif !important;
  font-weight: 700 !important;
  letter-spacing: 0.04em;
}

.site-meta .site-subtitle {
  color: rgba(255, 255, 255, 0.72) !important;
  font-size: 13px !important;
}

.site-author-name {
  font-family: "Noto Serif SC", "Source Han Serif SC", serif !important;
  font-size: 18px !important;
  letter-spacing: 0.06em;
  color: var(--bk-ink) !important;
}

.site-description {
  color: var(--bk-muted) !important;
  line-height: 1.6;
}

.sidebar-inner {
  background: rgba(255, 255, 255, 0.94) !important;
  border: 1px solid var(--bk-line);
  box-shadow: 0 1px 2px rgba(28, 36, 48, 0.04), 0 8px 24px rgba(28, 36, 48, 0.06) !important;
  border-radius: 10px !important;
}

.site-state-item-count {
  color: var(--bk-accent) !important;
  font-weight: 700;
}

.links-of-author .links-of-author-item a:hover {
  background: var(--bk-accent-soft);
  color: var(--bk-accent) !important;
  border-color: transparent;
}

.sidebar-nav .sidebar-nav-active,
.sidebar-nav li:hover {
  color: var(--bk-accent) !important;
}

.content-wrap {
  background: rgba(255, 255, 255, 0.97) !important;
  border: 1px solid var(--bk-line);
  box-shadow: 0 1px 2px rgba(28, 36, 48, 0.04), 0 12px 32px rgba(28, 36, 48, 0.06) !important;
  border-radius: 10px !important;
}

.header-inner {
  border-radius: 10px !important;
  overflow: hidden;
  box-shadow: 0 1px 2px rgba(28, 36, 48, 0.04), 0 8px 24px rgba(28, 36, 48, 0.06) !important;
}

.posts-expand .post-title {
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif !important;
  font-weight: 700 !important;
  font-size: 1.85em !important;
  line-height: 1.35 !important;
  color: var(--bk-ink) !important;
  letter-spacing: 0.02em;
}

.posts-expand .post-title a {
  color: inherit !important;
  border-bottom: none !important;
}

.posts-expand .post-title a:hover {
  color: var(--bk-accent) !important;
}

.posts-expand .post-meta {
  color: var(--bk-muted) !important;
  font-size: 13px !important;
  margin-top: 10px !important;
}

.posts-expand .post-meta .post-meta-item-icon,
.posts-expand .post-meta a {
  color: var(--bk-accent) !important;
}

.posts-expand .post-body {
  font-size: 16px !important;
  line-height: 1.85 !important;
  color: #2a3441;
}

.posts-expand .post-body h2,
.posts-expand .post-body h3,
.posts-expand .post-body h4 {
  font-family: "Noto Serif SC", "Source Han Serif SC", serif !important;
  color: var(--bk-ink);
  margin-top: 1.8em;
  letter-spacing: 0.02em;
}

.posts-expand .post-body h2 {
  font-size: 1.45em;
  padding-bottom: 0.35em;
  border-bottom: 2px solid var(--bk-accent-soft);
}

.posts-expand .post-body h3 {
  font-size: 1.2em;
}

.posts-expand .post-body blockquote {
  margin: 1.4em 0;
  padding: 14px 18px;
  background: linear-gradient(90deg, var(--bk-accent-soft), transparent 85%);
  border-left: 3px solid var(--bk-accent) !important;
  border-radius: 0 8px 8px 0;
  color: var(--bk-muted);
}

.posts-expand .post-body blockquote a {
  font-weight: 600;
}

.posts-expand .post-body img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 1.5em auto;
  border-radius: 8px;
  border: 1px solid var(--bk-line);
  box-shadow: 0 8px 28px rgba(28, 36, 48, 0.08);
  background: #fff;
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.posts-expand .post-body img:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 36px rgba(28, 36, 48, 0.12);
}

.posts-expand .post-body table {
  border-collapse: separate;
  border-spacing: 0;
  width: 100%;
  overflow: hidden;
  border-radius: 8px;
  border: 1px solid var(--bk-line);
  font-size: 14px;
}

.posts-expand .post-body table th {
  background: #1c2430;
  color: #fff;
  font-weight: 600;
  padding: 10px 12px;
  border: none;
}

.posts-expand .post-body table td {
  padding: 10px 12px;
  border-color: var(--bk-line) !important;
  vertical-align: top;
}

.posts-expand .post-body table tr:nth-child(even) td {
  background: rgba(14, 116, 144, 0.04);
}

.posts-expand .post-body hr {
  margin: 2em 0;
  border: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--bk-line), transparent);
}

code {
  font-family: "IBM Plex Mono", "Source Code Pro", Menlo, Consolas, monospace !important;
  background: var(--bk-accent-soft) !important;
  color: #0a5568 !important;
  padding: 0.15em 0.4em !important;
  border-radius: 4px !important;
  font-size: 0.9em !important;
}

.highlight,
pre {
  border-radius: 8px !important;
  border: none !important;
  background: var(--bk-code-bg) !important;
}

.highlight {
  margin: 1.4em 0 !important;
}

.highlight .gutter pre,
.highlight .code pre,
.highlight pre,
pre {
  background: transparent !important;
  color: #d6dee8 !important;
}

pre {
  padding: 16px 18px !important;
  overflow-x: auto;
}

pre code {
  background: transparent !important;
  color: inherit !important;
  padding: 0 !important;
}

.post-toc .nav-link.active {
  color: var(--bk-accent) !important;
  border-left-color: var(--bk-accent) !important;
}

.post-toc-wrap h2 {
  font-family: "Noto Serif SC", serif !important;
  font-size: 14px !important;
  letter-spacing: 0.08em;
}

.pagination .page-number.current {
  background: var(--bk-accent) !important;
  border-color: var(--bk-accent) !important;
}

.footer {
  color: var(--bk-muted);
  font-size: 13px;
}

/* Wider content for tech posts with diagrams */
@media (min-width: 1600px) {
  .container .main-inner {
    width: 1280px;
  }
  .content-wrap {
    width: 980px !important;
  }
  .posts-expand .post-body {
    font-size: 17px !important;
  }
}

@media (min-width: 992px) and (max-width: 1599px) {
  .container .main-inner {
    width: 1100px;
  }
  .content-wrap {
    width: 820px !important;
  }
}

@media (max-width: 767px) {
  .content-wrap {
    border-radius: 0 !important;
    border-left: none;
    border-right: none;
  }
  .posts-expand .post-title {
    font-size: 1.45em !important;
  }
}