:root {
  --geek-accent: #0969da;
  --geek-accent-2: #059669;
  --geek-line: rgba(30, 41, 59, 0.11);
  --geek-grid: rgba(15, 23, 42, 0.035);
  --geek-shadow: 0 18px 50px rgba(15, 23, 42, 0.08);
  --geek-code-bg: #f6f8fa;
  --geek-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

html[data-user-color-scheme="dark"] {
  --geek-accent: #7dd3fc;
  --geek-accent-2: #34d399;
  --geek-line: rgba(125, 211, 252, 0.14);
  --geek-grid: rgba(125, 211, 252, 0.035);
  --geek-shadow: 0 24px 70px rgba(0, 0, 0, 0.32);
  --geek-code-bg: #070a0f;
}

body {
  background-image:
    radial-gradient(circle at 15% 12%, rgba(9, 105, 218, 0.08), transparent 28rem),
    linear-gradient(var(--geek-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--geek-grid) 1px, transparent 1px);
  background-size: auto, 32px 32px, 32px 32px;
  background-attachment: fixed;
}

html[data-user-color-scheme="dark"] body {
  background-image:
    radial-gradient(circle at 18% 10%, rgba(56, 189, 248, 0.09), transparent 32rem),
    radial-gradient(circle at 88% 42%, rgba(52, 211, 153, 0.045), transparent 28rem),
    linear-gradient(var(--geek-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--geek-grid) 1px, transparent 1px);
}

::selection {
  color: #061018;
  background: #7dd3fc;
}

a {
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.navbar {
  border-bottom: 1px solid transparent;
  box-shadow: none;
}

.navbar.top-nav-collapse,
.navbar.navbar-col-show,
.navbar .dropdown-collapse {
  border-bottom-color: var(--geek-line);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.12);
  backdrop-filter: blur(16px) saturate(130%);
  -webkit-backdrop-filter: blur(16px) saturate(130%);
}

.navbar .navbar-brand {
  font-family: var(--geek-mono);
  font-size: 0.95rem;
  letter-spacing: 0.06em;
}

.navbar .navbar-brand strong::before {
  color: var(--geek-accent-2);
  content: "> ";
}

.navbar .nav-item .nav-link {
  font-family: var(--geek-mono);
  font-size: 0.78rem;
  letter-spacing: 0.035em;
}

.banner-text {
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.8);
}

.banner-text .h2,
.banner-text #subtitle,
.banner-text .typed-cursor {
  font-family: var(--geek-mono);
  letter-spacing: 0.045em;
}

.banner-text .h2 {
  font-size: clamp(2rem, 5vw, 3.7rem);
  font-weight: 650;
}

.banner-text #subtitle,
.banner-text .typed-cursor {
  color: #b9f6e4;
  font-size: clamp(1rem, 2vw, 1.25rem);
}

#board {
  overflow: hidden;
  border: 1px solid var(--geek-line);
  border-radius: 20px;
  box-shadow: var(--geek-shadow);
}

.index-card {
  position: relative;
  margin-bottom: 0;
  padding: 1.45rem 0.25rem;
  border-bottom: 1px solid var(--geek-line);
  transition: background-color 0.22s ease, transform 0.22s ease;
}

.index-card:last-of-type {
  border-bottom: 0;
}

.index-card:hover {
  background: rgba(9, 105, 218, 0.035);
  transform: translateX(4px);
}

html[data-user-color-scheme="dark"] .index-card:hover {
  background: rgba(125, 211, 252, 0.035);
}

.index-header {
  font-family: var(--geek-mono);
  font-size: 1.22rem;
  letter-spacing: -0.02em;
}

.index-header::before {
  margin-right: 0.55rem;
  color: var(--geek-accent-2);
  content: "./";
  font-weight: 400;
}

.index-excerpt {
  margin: 0.7rem 0;
}

.index-btm,
.post-metas,
.archive-date {
  font-family: var(--geek-mono);
  font-size: 0.78rem;
}

.markdown-body {
  line-height: 1.85;
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4 {
  letter-spacing: -0.025em;
}

.markdown-body h2::before,
.markdown-body h3::before {
  margin-right: 0.45rem;
  color: var(--geek-accent);
  font-family: var(--geek-mono);
  font-weight: 400;
  content: "#";
}

.markdown-body :not(pre) > code {
  padding: 0.15em 0.38em;
  color: var(--geek-accent-2);
  background: rgba(9, 105, 218, 0.07);
  border: 1px solid var(--geek-line);
  border-radius: 5px;
  font-family: var(--geek-mono);
}

html[data-user-color-scheme="dark"] .markdown-body :not(pre) > code {
  background: rgba(125, 211, 252, 0.06);
}

.markdown-body pre,
.markdown-body figure.highlight {
  background: var(--geek-code-bg);
  border: 1px solid var(--geek-line);
  border-radius: 10px;
  box-shadow: inset 3px 0 0 var(--geek-accent);
}

.markdown-body blockquote {
  border-left-color: var(--geek-accent);
  background: rgba(9, 105, 218, 0.045);
}

.markdown-body table {
  overflow: hidden;
  border: 1px solid var(--geek-line);
  border-radius: 8px;
}

.tagcloud a,
.category-list-item a,
.list-group-item,
.links .card {
  border-radius: 8px;
}

.tagcloud a {
  display: inline-block;
  margin: 0.2rem;
  padding: 0.2rem 0.5rem;
  border: 1px solid var(--geek-line);
  font-family: var(--geek-mono);
}

.tocbot-link,
.category-list-link {
  font-family: var(--geek-mono);
  font-size: 0.82rem;
}

.footer-inner {
  font-family: var(--geek-mono);
  font-size: 0.78rem;
}

.footer-mark {
  color: var(--geek-accent-2);
}

.footer-sep {
  margin: 0 0.55rem;
  color: var(--sec-text-color);
}

#scroll-top-button {
  border: 1px solid var(--geek-line);
  box-shadow: var(--geek-shadow);
}

@media (max-width: 767px) {
  body {
    background-size: auto, 24px 24px, 24px 24px;
  }

  #board {
    border-right: 0;
    border-left: 0;
    border-radius: 0;
  }

  .index-card {
    padding: 1.15rem 0;
  }

  .index-card:hover {
    transform: none;
  }

  .navbar .nav-item .nav-link {
    font-size: 0.9rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}