:root {
  --background: #f6f7f9;
  --site-bg-image: url("/images/background.svg");
  --card: rgba(255, 255, 255, 0.56);
  --card-strong: rgba(255, 255, 255, 0.74);
  --text: #24262f;
  --text-soft: rgba(36, 38, 47, 0.68);
  --text-faint: rgba(36, 38, 47, 0.46);
  --accent: #bd2f3d;
  --accent-soft: rgba(189, 47, 61, 0.11);
  --border: rgba(36, 38, 47, 0.08);
  --border-strong: rgba(189, 47, 61, 0.18);
  --radius: 8px;
  --left-width: 228px;
  --right-width: 220px;
  --content-width: 760px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--text);
  font-family: "Noto Sans SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.72;
  background-color: var(--background);
  background-image:
    linear-gradient(rgba(246, 247, 249, 0.62), rgba(246, 247, 249, 0.7)),
    var(--site-bg-image);
  background-position: center;
  background-size: cover;
  background-attachment: fixed;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 30;
  padding: 9px 12px;
  color: #fff;
  background: var(--accent);
  border-radius: var(--radius);
  transform: translateY(-150%);
}

.skip-link:focus {
  transform: translateY(0);
}

.blog-layout {
  display: grid;
  grid-template-columns: var(--left-width) minmax(0, var(--content-width)) var(--right-width);
  gap: 18px;
  width: min(100% - 32px, calc(var(--left-width) + var(--content-width) + var(--right-width) + 36px));
  margin: 0 auto;
  padding: 24px 0 52px;
}

.left-rail,
.right-rail {
  position: sticky;
  top: 24px;
  align-self: start;
  display: grid;
  gap: 12px;
}

.rail-card,
.content-card,
.content-page,
.section-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(18, 24, 40, 0.04);
  backdrop-filter: blur(18px) saturate(1.18);
  -webkit-backdrop-filter: blur(18px) saturate(1.18);
}

.profile-panel {
  padding: 18px;
}

.avatar-link {
  display: block;
  width: 74px;
  height: 74px;
  margin-bottom: 14px;
  overflow: hidden;
  background: var(--card-strong);
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  backdrop-filter: blur(16px) saturate(1.16);
  -webkit-backdrop-filter: blur(16px) saturate(1.16);
}

.avatar-link img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.site-title strong,
.site-title span {
  display: block;
}

.site-title strong {
  font-family: "ZCOOL XiaoWei", serif;
  font-size: 28px;
  font-weight: 400;
  line-height: 1.1;
}

.site-title span {
  margin-top: 6px;
  color: var(--text-soft);
  font-size: 13px;
  line-height: 1.55;
}

.nav-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  padding: 10px;
}

.nav-grid a {
  display: grid;
  min-height: 42px;
  place-items: center;
  color: var(--text-soft);
  font-size: 14px;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.34);
  border: 1px solid transparent;
  border-radius: var(--radius);
  backdrop-filter: blur(14px) saturate(1.12);
  -webkit-backdrop-filter: blur(14px) saturate(1.12);
}

.nav-grid a:hover,
.nav-grid a:focus-visible,
.nav-grid a.is-active {
  color: var(--accent);
  background: rgba(189, 47, 61, 0.1);
  border-color: var(--border-strong);
  outline: none;
}

.main-column {
  display: grid;
  min-width: 0;
  gap: 14px;
}

.right-rail {
  color: var(--text-soft);
  font-size: 14px;
}

.side-widget {
  padding: 16px;
}

.side-widget h2 {
  margin: 0 0 8px;
  color: var(--text);
  font-size: 15px;
}

.side-widget p {
  margin: 0;
}

.compact-posts {
  display: grid;
  gap: 9px;
}

.compact-posts a {
  display: grid;
  gap: 2px;
  padding: 8px 0;
  border-top: 1px solid var(--border);
}

.compact-posts time {
  color: var(--text-faint);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

.compact-posts span {
  color: var(--text-soft);
  overflow-wrap: anywhere;
}

.home-intro {
  padding: 30px 32px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.25;
}

.home-intro h1,
.content-header h1 {
  font-family: "ZCOOL XiaoWei", serif;
  font-weight: 400;
}

.home-intro h1 {
  font-size: clamp(40px, 7vw, 72px);
}

.home-intro p {
  max-width: 34rem;
  margin: 14px 0 0;
  color: var(--text-soft);
}

.intro-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.intro-links a {
  min-height: 40px;
  padding: 8px 13px;
  color: var(--accent);
  font-weight: 700;
  background: var(--accent-soft);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  backdrop-filter: blur(14px) saturate(1.12);
  -webkit-backdrop-filter: blur(14px) saturate(1.12);
}

.section-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.section-card {
  min-height: 176px;
  padding: 20px;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.section-card:hover,
.section-card:focus-visible {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.68);
  border-color: var(--border-strong);
  outline: none;
}

.section-card span,
.section-card small {
  color: var(--text-faint);
  font-size: 12px;
  font-weight: 700;
}

.section-card h2 {
  margin-top: 14px;
  font-size: 22px;
}

.section-card p {
  margin: 10px 0 18px;
  color: var(--text-soft);
  font-size: 15px;
}

.updates-panel,
.content-page {
  padding: 28px 32px;
}

.panel-heading {
  margin-bottom: 14px;
}

.panel-heading h2 {
  font-size: 22px;
}

.post-list {
  display: grid;
  gap: 8px;
}

.post-row {
  display: grid;
  grid-template-columns: 118px minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 11px 0;
  border-top: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.16);
  border-radius: var(--radius);
}

.post-row:hover span,
.post-row:focus-visible span {
  color: var(--accent);
}

.post-row:focus-visible {
  outline: 2px solid var(--border-strong);
  outline-offset: 4px;
}

.post-row time {
  color: var(--text-faint);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

.post-row span {
  min-width: 0;
  overflow-wrap: anywhere;
  font-weight: 600;
}

.content-header {
  max-width: 640px;
  margin-bottom: 24px;
}

.content-header h1 {
  font-size: clamp(34px, 6vw, 56px);
}

.content-header p:not(.eyebrow),
.post-meta {
  margin: 12px 0 0;
  color: var(--text-soft);
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 14px;
}

.prose {
  max-width: 680px;
}

.prose h2,
.prose h3 {
  margin: 32px 0 12px;
}

.prose h2 {
  font-size: 24px;
}

.prose h3 {
  font-size: 19px;
}

.prose p,
.prose ul,
.prose ol,
.prose blockquote {
  margin: 14px 0;
}

.prose ul,
.prose ol {
  padding-left: 1.25rem;
}

.prose a {
  color: var(--accent);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.prose blockquote {
  padding: 12px 14px;
  color: var(--text-soft);
  background: rgba(255, 255, 255, 0.48);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
}

.prose table {
  display: block;
  width: 100%;
  max-width: 100%;
  margin: 18px 0;
  overflow-x: auto;
  border-collapse: collapse;
}

.prose th,
.prose td {
  padding: 8px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.prose th {
  color: var(--accent);
  background: rgba(255, 255, 255, 0.38);
}

.empty-note {
  margin: 0;
  color: var(--text-soft);
}

.archive-list {
  max-width: 680px;
}

@media (max-width: 1120px) {
  .blog-layout {
    grid-template-columns: var(--left-width) minmax(0, 1fr);
  }

  .right-rail {
    display: none;
  }
}

@media (max-width: 760px) {
  .blog-layout {
    grid-template-columns: 1fr;
    width: min(100% - 20px, 720px);
    padding-top: 14px;
  }

  .left-rail {
    position: static;
  }

  .profile-panel {
    display: grid;
    grid-template-columns: 62px minmax(0, 1fr);
    gap: 12px;
    align-items: center;
  }

  .avatar-link {
    width: 62px;
    height: 62px;
    margin: 0;
  }

  .site-title strong {
    font-size: 24px;
  }

  .nav-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .section-grid {
    grid-template-columns: 1fr;
  }

  .home-intro,
  .updates-panel,
  .content-page {
    padding: 22px;
  }

  .post-row {
    grid-template-columns: 1fr;
    gap: 1px;
  }
}

@media (max-width: 420px) {
  .nav-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@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;
  }
}