:root {
  --bg: #ffffff;
  --ink: #16181a;
  --text: #363b40;
  --muted: #868e96;
  --soft: #f7f7f7;
  --line: #eceff1;
  --line-strong: #fff0e6;
  --accent: #de7b85;
  --accent-strong: #146bb7;
  --container: 1160px;
  --motion-fast: 180ms;
  --motion-base: 240ms;
  --motion-ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Avenir Next", "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.75;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--motion-fast) var(--motion-ease), transform var(--motion-fast) var(--motion-ease), opacity var(--motion-fast) var(--motion-ease);
}

a:hover {
  color: var(--accent-strong);
}

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

:not(pre) > code {
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  background: var(--soft);
  font-family: "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 0.92em;
}

.site-container {
  width: min(var(--container), calc(100% - 2rem));
  margin: 0 auto;
}

.site-chrome {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 8px 20px rgba(22, 24, 26, 0.05);
  transition: box-shadow var(--motion-base) var(--motion-ease), border-color var(--motion-base) var(--motion-ease);
}

.compact-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 64px;
}

.compact-brand {
  color: var(--ink);
  font-family: "Avenir Next Condensed", "DIN Alternate", "Avenir Next", "PingFang SC", sans-serif;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  white-space: nowrap;
  transition: color var(--motion-fast) var(--motion-ease), transform var(--motion-fast) var(--motion-ease), opacity var(--motion-fast) var(--motion-ease);
}

.compact-brand:hover {
  transform: translateY(-1px);
  opacity: 0.88;
}

.compact-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.compact-nav a {
  position: relative;
  display: block;
  padding: 1.1rem 0;
  color: var(--text);
  font-size: 0.92rem;
  font-weight: 500;
  transition: color var(--motion-fast) var(--motion-ease);
}

.compact-nav a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0.75rem;
  left: 0;
  height: 2px;
  background: currentColor;
  opacity: 0.24;
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--motion-base) var(--motion-ease), opacity var(--motion-base) var(--motion-ease);
}

.compact-nav a:hover {
  color: var(--accent-strong);
}

.compact-nav a:hover::after {
  opacity: 0.5;
  transform: scaleX(1);
}

.compact-nav a.is-active {
  color: var(--ink);
}

.compact-nav a.is-active::after {
  opacity: 1;
  transform: scaleX(1);
}

.site-hero {
  border-bottom: 1px solid var(--line-strong);
}

.site-branding {
  padding: 4rem 0 3rem;
  text-align: center;
}

.site-title {
  display: inline-block;
  margin: 0;
  color: var(--ink);
  font-family: "Avenir Next Condensed", "DIN Alternate", "Avenir Next", "PingFang SC", sans-serif;
  font-size: clamp(1.9rem, 2vw + 1.1rem, 3rem);
  font-weight: 700;
  letter-spacing: 0.01em;
  transition: color var(--motion-fast) var(--motion-ease), transform var(--motion-fast) var(--motion-ease);
}

.site-title:hover {
  color: var(--ink);
  transform: translateY(-1px);
}

.site-description {
  margin: 0.55rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.site-content {
  margin: 4rem 0 5rem;
}

.page-header {
  margin-bottom: 3rem;
}

.page-header h1 {
  margin: 0 0 0.85rem;
  color: var(--ink);
  font-family: "Avenir Next Condensed", "DIN Alternate", "Avenir Next", "PingFang SC", sans-serif;
  font-size: clamp(2rem, 3vw, 3rem);
  line-height: 1.1;
}

.page-description {
  max-width: 40rem;
  color: var(--muted);
  font-size: 1rem;
}

.page-description > :first-child,
.article-content > :first-child {
  margin-top: 0;
}

.post-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 3.25rem 2.5rem;
}

.home-archive-link {
  margin: 3.5rem 0 0;
}

.archive-list {
  width: min(920px, 100%);
}

.archive-year-group + .archive-year-group {
  margin-top: 2.75rem;
}

.archive-year-heading {
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
  margin: 0 0 1.2rem;
  color: var(--ink);
  font-family: "Avenir Next Condensed", "DIN Alternate", "Avenir Next", "PingFang SC", sans-serif;
  font-size: clamp(1.8rem, 1.5vw + 1.1rem, 2.4rem);
  font-weight: 700;
  line-height: 1.05;
}

.archive-year-count {
  color: var(--muted);
  font-size: 0.78em;
  font-weight: 500;
}

.archive-post-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.archive-post-item {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1.25rem;
  align-items: baseline;
  padding: 0.62rem 0 0.62rem 1.35rem;
  transition: transform var(--motion-fast) var(--motion-ease);
}

.archive-post-item::before {
  content: "";
  position: absolute;
  top: 1.15rem;
  left: 0.15rem;
  width: 0.42rem;
  height: 0.42rem;
  background: var(--text);
}

.archive-post-item:hover {
  transform: translateX(3px);
}

.archive-post-date {
  color: var(--ink);
  font-size: 0.96rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.archive-post-body {
  min-width: 0;
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 0.5rem 0.75rem;
  color: var(--text);
  font-size: 1.02rem;
  line-height: 1.65;
}

.archive-post-link {
  min-width: 0;
  flex: 1 1 auto;
  color: var(--accent-strong);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.14em;
  text-decoration-color: rgba(20, 107, 183, 0.35);
}

.archive-post-link:hover {
  text-decoration-color: currentColor;
}

.archive-post-tags {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-left: auto;
  justify-content: flex-end;
}

.archive-post-tag {
  display: inline-flex;
  align-items: center;
  min-height: 1.7rem;
  padding: 0.08rem 0.58rem;
  border: 1px solid rgba(31, 41, 55, 0.14);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1;
  letter-spacing: 0.01em;
  background: rgba(255, 255, 255, 0.82);
}

.taxonomy-directory {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2.5rem 3rem;
}

.taxonomy-group {
  padding-top: 1.4rem;
  border-top: 1px solid var(--line);
  transition: transform var(--motion-fast) var(--motion-ease), border-color var(--motion-fast) var(--motion-ease);
}

.taxonomy-group:hover {
  transform: translateY(-2px);
  border-top-color: var(--line-strong);
}

.taxonomy-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.taxonomy-title {
  margin: 0;
  color: var(--ink);
  font-family: "Avenir Next Condensed", "DIN Alternate", "Avenir Next", "PingFang SC", sans-serif;
  font-size: clamp(1.45rem, 1.1vw + 1rem, 2rem);
  line-height: 1.12;
}

.taxonomy-title a:hover {
  color: var(--accent-strong);
}

.taxonomy-count,
.taxonomy-post-date {
  color: var(--muted);
  font-size: 0.9rem;
  white-space: nowrap;
}

.taxonomy-post-list {
  list-style: none;
  margin: 0 0 1.2rem;
  padding: 0;
}

.taxonomy-post-list li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8rem 0;
  border-top: 1px solid var(--line);
  transition: transform var(--motion-fast) var(--motion-ease), border-color var(--motion-fast) var(--motion-ease);
}

.taxonomy-post-list li:first-child {
  border-top: 0;
  padding-top: 0;
}

.taxonomy-post-link {
  min-width: 0;
  color: var(--text);
  font-size: 0.98rem;
  transition: color var(--motion-fast) var(--motion-ease), transform var(--motion-fast) var(--motion-ease);
}

.taxonomy-post-link:hover {
  color: var(--accent-strong);
}

.taxonomy-post-list li:hover {
  transform: translateX(3px);
  border-top-color: var(--line-strong);
}

.taxonomy-entry-link {
  margin: 0;
}

.post-card {
  min-width: 0;
  transition: transform var(--motion-fast) var(--motion-ease);
}

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

.post-card + .post-card {
  margin-top: 0;
}

.post-card-featured {
  margin-bottom: 3rem;
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 0.85rem;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
}

.post-category {
  color: var(--accent);
  font-weight: 600;
}

.post-date,
.post-word-count,
.post-reading-time {
  display: inline-flex;
  align-items: center;
  color: var(--muted);
}

.post-date::before {
  content: "";
  width: 2rem;
  height: 1px;
  margin-right: 0.75rem;
  background: var(--accent);
  transition: transform var(--motion-fast) var(--motion-ease), background-color var(--motion-fast) var(--motion-ease);
}

.post-word-count::before,
.post-reading-time::before {
  content: "·";
  margin-right: 0.75rem;
  color: var(--muted);
}

.post-title,
.single-post-title {
  margin: 0 0 0.9rem;
  color: var(--ink);
  font-family: "Avenir Next Condensed", "DIN Alternate", "Avenir Next", "PingFang SC", sans-serif;
  font-weight: 700;
  line-height: 1.2;
}

.post-title {
  font-size: 1.45rem;
}

.post-title-featured {
  font-size: clamp(2.05rem, 2.6vw + 1rem, 3.2rem);
  line-height: 1.08;
}

.post-title a:hover,
.single-post-title:hover {
  color: var(--accent-strong);
}

.post-card:hover .post-date::before,
.single-post:hover .post-date::before {
  transform: scaleX(1.08);
}

.post-summary,
.single-post-summary,
.article-content {
  color: var(--text);
}

.post-summary,
.single-post-summary {
  margin: 0 0 1.35rem;
  font-size: 1rem;
}

.post-card-featured .post-summary {
  max-width: 48rem;
  font-size: 1.06rem;
}

.post-link,
.back-link {
  margin: 0;
}

.readmore-link {
  position: relative;
  display: inline-block;
  padding-left: 2.5rem;
  color: var(--ink);
  font-size: 0.875rem;
  font-weight: 700;
  transition: color var(--motion-fast) var(--motion-ease), transform var(--motion-fast) var(--motion-ease);
}

.readmore-link::before {
  content: "";
  position: absolute;
  top: calc(50% - 1px);
  left: 0;
  width: 1.85rem;
  height: 1px;
  background: var(--ink);
  transition: transform var(--motion-fast) var(--motion-ease), background-color var(--motion-fast) var(--motion-ease);
}

.readmore-link:hover {
  color: var(--accent-strong);
  transform: translateX(0.2rem);
}

.readmore-link:hover::before {
  background: var(--accent-strong);
  transform: scaleX(1.08);
}

.archive-entry-link {
  position: relative;
  display: inline-block;
  padding-left: 2.2rem;
  color: var(--accent-strong);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  transition: color var(--motion-fast) var(--motion-ease), transform var(--motion-fast) var(--motion-ease), opacity var(--motion-fast) var(--motion-ease);
}

.archive-entry-link::before {
  content: "";
  position: absolute;
  top: calc(50% - 1px);
  left: 0;
  width: 1.6rem;
  height: 1px;
  background: rgba(20, 107, 183, 0.62);
  transition: transform var(--motion-fast) var(--motion-ease), background-color var(--motion-fast) var(--motion-ease), opacity var(--motion-fast) var(--motion-ease);
}

.archive-entry-link:hover {
  color: var(--accent-strong);
  transform: translateX(0.14rem);
  opacity: 0.72;
}

.archive-entry-link:hover::before {
  transform: scaleX(1.06);
  opacity: 0.72;
}

.single-post {
  padding: 0;
}

.single-post-inner {
  width: min(760px, 100%);
  margin: 0 auto;
}

.single-post-title {
  font-size: clamp(2.3rem, 3vw, 3.4rem);
  line-height: 1.08;
}

.single-post-summary {
  color: var(--muted);
  font-size: 1.08rem;
}

.article-content {
  font-size: 1.03rem;
}

.single-post .back-link {
  margin-top: 2.75rem;
}

.article-content p,
.article-content ul,
.article-content ol,
.article-content blockquote,
.article-content pre,
.article-content h2,
.article-content h3,
.article-content h4 {
  margin-top: 0;
  margin-bottom: 1.4rem;
}

.article-content h2,
.article-content h3,
.article-content h4 {
  color: var(--ink);
  font-family: "Avenir Next Condensed", "DIN Alternate", "Avenir Next", "PingFang SC", sans-serif;
  line-height: 1.25;
}

.article-content a {
  color: var(--accent-strong);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.16em;
  text-decoration-color: rgba(20, 107, 183, 0.38);
  transition: color var(--motion-fast) var(--motion-ease), text-decoration-color var(--motion-fast) var(--motion-ease), text-underline-offset var(--motion-fast) var(--motion-ease);
}

.article-content a:hover {
  text-decoration-color: currentColor;
  text-underline-offset: 0.24em;
}

.article-content blockquote {
  margin-left: 0;
  padding-left: 1.25rem;
  border-left: 2px solid var(--accent);
  color: var(--muted);
}

.article-content hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 2.5rem 0;
}

.article-content .highlight {
  margin: 0 0 1.4rem;
  overflow: hidden;
  border-radius: 18px;
  background: #272822;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04);
}

.article-content .highlight pre,
.article-content pre {
  overflow-x: auto;
  padding: 1.2rem 1.35rem;
  margin: 0;
  border-radius: 0;
  background: transparent !important;
  box-shadow: none;
  outline: none;
  -webkit-appearance: none;
}

.article-content .highlight pre code,
.article-content pre code {
  display: block;
  padding: 0;
  border-radius: 0;
  background: transparent;
  color: inherit;
  font-family: "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 0.95rem;
  line-height: 1.7;
}

.article-content .highlight pre:focus,
.article-content .highlight pre:focus-visible,
.article-content pre:focus,
.article-content pre:focus-visible {
  outline: none;
}

.article-content .highlight span[style*="display:flex"] {
  min-width: 100%;
}

.empty-state {
  padding: 3rem 0;
}

.empty-state h1 {
  margin: 0 0 0.8rem;
  color: var(--ink);
  font-family: "Avenir Next Condensed", "DIN Alternate", "Avenir Next", "PingFang SC", sans-serif;
  font-size: 2rem;
}

.site-footer {
  margin-top: 5rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.site-footer p {
  margin: 0;
  padding: 1.5rem 0 2rem;
  font-size: 0.9rem;
  text-align: center;
}

@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;
  }
}

@media (max-width: 980px) {
  .site-content {
    margin: 4rem 0;
  }

  .taxonomy-directory {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .post-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 2.5rem 2rem;
  }
}

@media (max-width: 640px) {
  .site-container {
    width: min(var(--container), calc(100% - 1.5rem));
  }

  .compact-header {
    min-height: 56px;
    gap: 1rem;
  }

  .site-branding {
    padding: 2.5rem 0 2rem;
  }

  .compact-nav ul {
    overflow-x: auto;
    scrollbar-width: none;
    flex-wrap: nowrap;
  }

  .compact-nav ul::-webkit-scrollbar {
    display: none;
  }

  .compact-nav a {
    white-space: nowrap;
    padding: 0.95rem 0;
  }

  .site-content {
    margin: 2.5rem 0 4rem;
  }

  .page-header {
    margin-bottom: 2rem;
  }

  .post-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .post-card-featured {
    margin-bottom: 2rem;
  }

  .post-title-featured {
    font-size: 1.3rem;
    line-height: 1.2;
  }

  .post-card-featured .post-summary {
    max-width: none;
    font-size: 0.98rem;
  }

  .post-grid .post-title {
    font-size: 1.3rem;
  }

  .post-grid .post-summary {
    font-size: 0.98rem;
  }

  .home-archive-link {
    margin-top: 2.25rem;
  }

  .archive-year-group + .archive-year-group {
    margin-top: 2rem;
  }

  .archive-post-item {
    grid-template-columns: 1fr;
    gap: 0.15rem;
    padding: 0.7rem 0 0.7rem 1.15rem;
  }

  .archive-post-item::before {
    top: 1.08rem;
    left: 0.08rem;
  }

  .archive-post-date {
    font-size: 0.92rem;
  }

  .archive-post-body {
    font-size: 1rem;
    flex-wrap: wrap;
    gap: 0.35rem 0.6rem;
  }

  .archive-post-tags {
    gap: 0.35rem;
    margin-left: 0;
    justify-content: flex-start;
  }

  .archive-post-tag {
    min-height: 1.58rem;
    padding: 0.08rem 0.5rem;
    font-size: 0.78rem;
  }

  .single-post-title {
    font-size: 2rem;
  }
}