:root {
  --bg: #f8f4ec;
  --surface: #fffaf2;
  --surface-strong: #f1e8db;
  --text: #1f2937;
  --muted: #526072;
  --primary: #d97757;
  --primary-strong: #c86443;
  --secondary: #3d6f64;
  --accent: #b08942;
  --border: rgba(31, 41, 55, 0.14);
  --shadow: 0 18px 38px rgba(56, 42, 26, 0.14);
  --radius-lg: 26px;
  --radius-md: 18px;
  --radius-sm: 12px;
}

:root[data-theme="dark"] {
  --bg: #11151c;
  --surface: #1a202b;
  --surface-strong: #222c3b;
  --text: #f2efe9;
  --muted: #b9c2d3;
  --primary: #f28e69;
  --primary-strong: #ff9c79;
  --secondary: #74b5a6;
  --accent: #d4b16c;
  --border: rgba(255, 255, 255, 0.16);
  --shadow: 0 18px 38px rgba(0, 0, 0, 0.36);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Manrope", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 15% 15%, rgba(217, 119, 87, 0.16), transparent 38%),
    radial-gradient(circle at 80% 10%, rgba(61, 111, 100, 0.12), transparent 35%),
    var(--bg);
  line-height: 1.7;
  transition: background-color 260ms ease, color 260ms ease;
}

.bg-orb {
  position: fixed;
  border-radius: 999px;
  filter: blur(24px);
  z-index: -1;
  opacity: 0.7;
}

.orb-1 {
  width: 240px;
  height: 240px;
  left: -70px;
  top: 120px;
  background: rgba(217, 119, 87, 0.35);
}

.orb-2 {
  width: 300px;
  height: 300px;
  right: -120px;
  top: 420px;
  background: rgba(61, 111, 100, 0.26);
}

.container {
  width: min(1120px, calc(100% - 48px));
  margin: 0 auto;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -44px;
  z-index: 60;
  padding: 8px 12px;
  border-radius: 10px;
  background: var(--text);
  color: var(--bg);
  text-decoration: none;
  font-weight: 700;
  transition: top 160ms ease;
}

.skip-link:focus {
  top: 12px;
}

.reading-progress {
  position: fixed;
  left: 0;
  top: 0;
  width: 100%;
  height: 3px;
  z-index: 70;
  background: transparent;
}

.reading-progress-bar {
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  transition: width 110ms linear;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(10px);
  background: color-mix(in oklab, var(--bg) 86%, transparent);
  border-bottom: 1px solid var(--border);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 74px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  font-weight: 800;
  letter-spacing: 0.02em;
}

.logo-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  color: #fff;
  font-family: "Playfair Display", serif;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
}

.main-nav {
  display: inline-flex;
  gap: 24px;
}

.main-nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
  transition: color 180ms ease;
}

.main-nav a:hover {
  color: var(--text);
}

.theme-toggle {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 999px;
  padding: 10px 16px;
  font-weight: 700;
  cursor: pointer;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--secondary);
  outline-offset: 2px;
}

.hero {
  padding: 90px 0 56px;
}

.scribble {
  margin: 0;
  font-family: "Caveat", cursive;
  font-size: 2rem;
  color: var(--primary);
}

.hero h1,
.article-wrap h1 {
  margin: 14px 0;
  font-family: "Playfair Display", "STSong", serif;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 4.4rem);
}

.hero-text {
  max-width: 700px;
  margin: 0;
  color: var(--muted);
  font-size: 1.1rem;
}

.hero-actions {
  margin-top: 28px;
  display: flex;
  gap: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-strong));
  box-shadow: var(--shadow);
}

.btn-secondary {
  color: var(--text);
  border: 1px solid var(--border);
  background: var(--surface);
}

.section {
  padding: 36px 0;
}

.section-head h2 {
  margin: 0;
  font-family: "Playfair Display", "STSong", serif;
  font-size: clamp(1.6rem, 3vw, 2.3rem);
}

.section-head p {
  margin: 8px 0 0;
  color: var(--muted);
}

.latest-toolbar {
  margin-top: 18px;
  display: grid;
  gap: 12px;
}

.toolbar-top-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: 10px;
}

.search-wrap {
  display: block;
}

.search-wrap input {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 0 14px;
  background: var(--surface);
  color: var(--text);
  font-size: 0.95rem;
}

.search-wrap input::placeholder {
  color: var(--muted);
}

.sort-wrap {
  display: grid;
  align-items: center;
  gap: 6px;
  font-size: 0.84rem;
  font-weight: 800;
  color: var(--muted);
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.sort-wrap select {
  min-height: 46px;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 0 12px;
  background: var(--surface);
  color: var(--text);
  font-weight: 700;
}

.category-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-chip {
  min-height: 38px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--muted);
  padding: 0 14px;
  font-weight: 700;
  cursor: pointer;
}

.filter-chip.is-active {
  background: linear-gradient(135deg, var(--primary), var(--primary-strong));
  color: #fff;
  border-color: transparent;
}

.posts-count {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.featured-grid {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.featured-card,
.post-card,
.about-panel,
.article-content,
.related {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.featured-card,
.about-panel,
.related {
  padding: 28px;
}

.featured-card.alt {
  background: linear-gradient(
    135deg,
    color-mix(in oklab, var(--secondary) 20%, var(--surface)),
    var(--surface)
  );
}

.card-meta {
  margin: 0;
  font-size: 0.9rem;
  color: var(--secondary);
  font-weight: 700;
}

.featured-card h3,
.post-card h3 {
  margin: 10px 0;
  font-size: 1.45rem;
  line-height: 1.3;
}

.featured-card p,
.post-card p {
  margin: 0;
  color: var(--muted);
}

.text-link,
.post-card a {
  display: inline-block;
  margin-top: 14px;
  color: var(--primary-strong);
  text-decoration: none;
  font-weight: 700;
}

.post-grid {
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.post-card {
  padding: 22px;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.post-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 26px 42px rgba(56, 42, 26, 0.18);
}

.pagination {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-btn {
  min-width: 38px;
  height: 38px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  color: var(--muted);
  font-weight: 700;
  cursor: pointer;
}

.page-btn.is-active {
  border-color: transparent;
  color: #fff;
  background: linear-gradient(135deg, var(--secondary), var(--primary));
}

.empty-state {
  grid-column: 1 / -1;
  border: 1px dashed var(--border);
  background: color-mix(in oklab, var(--surface) 92%, var(--secondary));
  border-radius: var(--radius-md);
  padding: 24px;
}

.empty-state h3 {
  margin: 0 0 8px;
  font-family: "Playfair Display", "STSong", serif;
}

.empty-state p {
  margin: 0;
  color: var(--muted);
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 11px;
  border-radius: 999px;
  background: color-mix(in oklab, var(--primary) 16%, var(--surface));
  color: var(--primary-strong);
  font-size: 0.83rem;
  font-weight: 700;
}

.card-tags,
.article-tags {
  margin-top: 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.inline-tag {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0 10px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--secondary);
  text-decoration: none;
  background: color-mix(in oklab, var(--secondary) 10%, var(--surface));
}

.skills {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.skills span {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 12px;
  background: color-mix(in oklab, var(--secondary) 10%, var(--surface));
  font-size: 0.9rem;
}

.site-footer {
  padding: 26px 0 34px;
}

.footer-wrap {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-wrap p {
  margin: 0;
  color: var(--muted);
}

.links {
  display: inline-flex;
  gap: 16px;
}

.links a {
  color: var(--muted);
  text-decoration: none;
}

.article-page .container {
  width: min(900px, calc(100% - 48px));
}

.article-wrap {
  padding: 44px 0 26px;
}

.back-link {
  color: var(--muted);
  text-decoration: none;
  font-weight: 700;
}

.article-wrap h1 {
  font-size: clamp(2rem, 5vw, 3.4rem);
  max-width: 15ch;
}

.article-meta {
  color: var(--muted);
  margin-top: 0;
}

.article-tags {
  margin: 0 0 16px;
}

.article-content {
  padding: 30px;
}

.article-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.toc {
  position: sticky;
  top: 92px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  box-shadow: var(--shadow);
  padding: 16px;
}

.toc-title {
  margin: 0 0 8px;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 800;
}

.toc ol {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 8px;
}

.toc a {
  color: var(--text);
  text-decoration: none;
  font-size: 0.9rem;
}

.tags-layout {
  margin-top: 18px;
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.tags-sidebar,
.tags-content {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow);
  padding: 22px;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.section-head.compact h2 {
  font-size: clamp(1.4rem, 2.6vw, 2rem);
}

.article-content h2 {
  margin-top: 30px;
  margin-bottom: 10px;
  font-family: "Playfair Display", "STSong", serif;
  scroll-margin-top: 90px;
}

.article-content p,
.article-content li {
  color: var(--text);
}

.article-content ul {
  padding-left: 20px;
}

.article-content blockquote {
  margin: 22px 0;
  padding: 14px 18px;
  border-left: 4px solid var(--primary);
  background: color-mix(in oklab, var(--primary) 10%, var(--surface));
  font-weight: 700;
}

.article-content pre {
  margin: 18px 0;
  padding: 16px;
  overflow: auto;
  border-radius: var(--radius-sm);
  background: #10151f;
  color: #f3f7ff;
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  animation: rise 620ms ease forwards;
}

.delay-1 {
  animation-delay: 120ms;
}

.delay-2 {
  animation-delay: 220ms;
}

.delay-3 {
  animation-delay: 320ms;
}

@keyframes rise {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 980px) {
  .main-nav {
    display: none;
  }

  .featured-grid,
  .post-grid {
    grid-template-columns: 1fr;
  }

  .article-layout {
    grid-template-columns: 1fr;
  }

  .toc {
    position: static;
  }

  .tags-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .container,
  .article-page .container {
    width: calc(100% - 32px);
  }

  .hero {
    padding-top: 64px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .toolbar-top-row {
    grid-template-columns: 1fr;
  }

  .featured-card,
  .post-card,
  .about-panel,
  .article-content,
  .related,
  .tags-sidebar,
  .tags-content {
    padding: 20px;
    border-radius: 20px;
  }

  .toc {
    padding: 14px;
    border-radius: 16px;
  }
}

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

  .reveal {
    opacity: 1;
    transform: none;
  }
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}