:root {
  color-scheme: light;
  --background: #ffffff;
  --text: #111111;
  --muted: #666666;
  --line: #dddddd;
  --link: #245b8a;
  --content: 920px;
  --reading: 720px;
  --sans: Inter, "Noto Sans SC", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  --surface-1: var(--background);
  --surface-2: color-mix(in srgb, var(--text) 4%, var(--background));
  --text-primary: var(--text);
  --text-secondary: var(--muted);
  --border-strong: var(--line);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --background: #111111;
  --text: #f2f2f2;
  --muted: #a8a8a8;
  --line: #333333;
  --link: #8ab4f8;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  min-height: 100%;
  background: var(--background);
}

body {
  min-height: 100%;
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}

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

a {
  color: var(--link);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

button,
input,
textarea,
select {
  color: inherit;
  font: inherit;
}

button {
  cursor: pointer;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 3px;
}

::selection {
  background: color-mix(in srgb, var(--link) 22%, transparent);
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 100;
  padding: 8px 12px;
  background: var(--text);
  color: var(--background);
  transform: translateY(-150%);
}

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

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

.site-header-inner {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 32px;
  width: min(var(--content), calc(100% - 40px));
  min-height: 64px;
  margin: 0 auto;
}

.site-wordmark {
  width: fit-content;
  color: var(--text);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
}

.site-nav,
.site-actions,
.footer-nav,
.simple-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.site-nav-link,
.mobile-nav-link,
.footer-nav a {
  color: var(--text);
  font-size: 14px;
  text-decoration: none;
}

.site-nav-link.is-active,
.mobile-nav-link.is-active {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.site-nav-link:hover,
.mobile-nav-link:hover,
.footer-nav a:hover,
.plain-button:hover,
.simple-filter:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.plain-button {
  appearance: none;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--text);
  font-size: 14px;
}

.menu-toggle {
  display: none;
}

.mobile-nav {
  display: none;
}

main {
  width: min(var(--content), calc(100% - 40px));
  min-height: calc(100vh - 180px);
  margin: 0 auto;
}

.site-footer {
  margin-top: 88px;
  border-top: 1px solid var(--line);
}

.site-footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(var(--content), calc(100% - 40px));
  min-height: 72px;
  margin: 0 auto;
  color: var(--muted);
  font-size: 14px;
}

.site-footer-inner p {
  margin: 0;
}

.footer-nav {
  gap: 20px;
}

.simple-page {
  width: 100%;
  padding-top: 64px;
}

.simple-intro {
  max-width: var(--reading);
  margin: 0 0 64px;
}

.simple-intro h1,
.simple-page > .simple-section:first-child h1 {
  margin: 0 0 16px;
  font-size: clamp(36px, 5vw, 48px);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.15;
}

.simple-intro > p,
.simple-page > .simple-section:first-child .simple-intro {
  max-width: 680px;
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 18px;
}

.simple-section {
  max-width: var(--reading);
  margin: 0 0 56px;
}

.simple-section > h2,
.simple-section > header > h2 {
  margin: 0 0 16px;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.3;
}

.simple-section > header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 12px;
}

.simple-section > header > h2,
.simple-section > header > p {
  margin: 0;
}

.simple-section h3 {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.45;
}

.simple-row h2,
.simple-row h3 {
  margin: 0 0 6px;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.45;
}

.simple-section p {
  margin: 0 0 16px;
}

.simple-meta {
  color: var(--muted);
  font-size: 14px;
}

.simple-row > .simple-meta,
.simple-intro .simple-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 12px;
}

.simple-link,
.text-link,
.section-link {
  color: var(--link);
}

.simple-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.simple-row {
  margin: 0;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.simple-row > :last-child {
  margin-bottom: 0;
}

.simple-empty {
  padding: 20px 0;
  border-block: 1px solid var(--line);
}

.simple-empty h3,
.simple-empty p {
  margin: 0 0 8px;
}

.simple-filters {
  display: grid;
  gap: 10px;
  max-width: var(--reading);
  margin-bottom: 48px;
  padding: 14px 0;
  border-block: 1px solid var(--line);
}

.simple-filters > div {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
}

.simple-filter {
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
}

.simple-filter.is-active {
  color: var(--text);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.simple-pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  max-width: var(--reading);
  margin-top: 32px;
}

.simple-pagination span {
  display: flex;
  gap: 12px;
}

.simple-pagination .is-active {
  color: var(--text);
  font-weight: 700;
}

.project-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 0.42fr);
  gap: 32px;
}

.project-row h2 {
  margin: 0 0 4px;
  font-size: 18px;
}

.project-row p {
  margin: 0;
}

.project-row .simple-meta {
  display: grid;
  align-content: start;
  gap: 3px;
}

.simple-links {
  flex-wrap: wrap;
  gap: 16px;
}

.page-hero,
.writing-page-header {
  max-width: var(--reading);
  padding: 64px 0 40px;
}

.page-hero-inner,
.writing-page-header-inner {
  width: 100%;
}

.section-label {
  display: none;
}

.section-title,
.writing-page-header h1 {
  margin: 0 0 14px;
  font-size: clamp(36px, 5vw, 48px);
  letter-spacing: -0.035em;
  line-height: 1.15;
}

.section-desc,
.writing-page-intro {
  max-width: 640px;
  margin: 0;
  color: var(--muted);
  font-size: 17px;
}

.writing-page-count {
  color: var(--muted);
  font-size: 14px;
}

.writing-filter-bar,
.archive-filters {
  max-width: var(--reading);
  margin: 0 0 48px;
  padding: 14px 0;
  border-block: 1px solid var(--line);
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}

.filter-row + .filter-row {
  margin-top: 10px;
}

.filter-btn {
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
}

.filter-btn.is-active {
  color: var(--text);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.filter-btn .count {
  color: var(--muted);
}

.editorial-archive,
.archive-list {
  max-width: var(--reading);
}

.editorial-archive-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 12px;
}

.editorial-archive-heading p {
  margin: 0;
}

.editorial-archive-list,
.archive-list {
  border-top: 1px solid var(--line);
}

.editorial-archive-item,
.archive-item {
  border-bottom: 1px solid var(--line);
}

.editorial-archive-link,
.archive-link {
  display: grid;
  grid-template-columns: 130px minmax(0, 1fr);
  gap: 24px;
  padding: 18px 0;
  color: var(--text);
  text-decoration: none;
}

.editorial-archive-index,
.editorial-archive-arrow {
  display: none;
}

.editorial-archive-kicker,
.archive-meta {
  color: var(--muted);
  font-size: 13px;
}

.editorial-archive-copy,
.archive-copy {
  display: grid;
  gap: 5px;
}

.editorial-archive-copy h2,
.archive-copy h2,
.editorial-archive-copy strong,
.archive-copy strong {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.45;
}

.editorial-archive-excerpt,
.archive-excerpt {
  color: var(--muted);
  font-size: 14px;
}

.pagination,
.pagination-pages {
  display: flex;
  align-items: center;
  gap: 14px;
}

.pagination {
  max-width: var(--reading);
  justify-content: space-between;
  margin-top: 32px;
}

.page-btn {
  color: var(--link);
  font-size: 14px;
}

.page-btn.is-active {
  color: var(--text);
  font-weight: 700;
}

.page-btn.is-disabled {
  color: var(--muted);
}

.taxonomy-grid,
.tag-index {
  max-width: var(--reading);
  border-top: 1px solid var(--line);
}

.taxonomy-card,
.tag-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 56px;
  border-bottom: 1px solid var(--line);
  color: var(--text);
  text-decoration: none;
}

.taxonomy-info {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.taxonomy-count,
.taxonomy-count-num,
.tag-item .count {
  color: var(--muted);
  font-size: 14px;
}

.article-shell,
.article-main,
.article-discussion,
.simple-page.article-page {
  max-width: var(--reading);
}

.article-shell,
.simple-page.article-page {
  padding-top: 64px;
}

.simple-page.article-page > article > .simple-link + .simple-intro {
  margin-top: 32px;
}

.article-progress,
.article-meta-rail,
.article-cover[hidden] {
  display: none;
}

.article-header {
  margin-bottom: 40px;
}

.article-header h1,
.article-title-block h1 {
  margin: 0 0 18px;
  font-size: clamp(34px, 5vw, 46px);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.2;
}

.article-dek {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 18px;
}

.article-meta,
.article-meta-mobile {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  color: var(--muted);
  font-size: 14px;
}

.article-meta-category,
.post-tag {
  color: var(--link);
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.article-cover {
  margin: 0 0 40px;
}

.prose,
.article-content,
.article-body {
  max-width: var(--reading);
  overflow-wrap: anywhere;
  font-size: 17px;
  line-height: 1.9;
}

.prose > :first-child,
.article-content > :first-child,
.article-body > :first-child {
  margin-top: 0;
}

.prose p,
.article-content p,
.article-body p {
  margin: 0 0 1.5em;
}

.prose h1,
.prose h2,
.prose h3,
.article-content h1,
.article-content h2,
.article-content h3,
.article-body h1,
.article-body h2,
.article-body h3 {
  margin: 2em 0 0.7em;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.35;
}

.prose h1,
.article-content h1,
.article-body h1 {
  font-size: 28px;
}

.prose h2,
.article-content h2,
.article-body h2 {
  font-size: 24px;
}

.prose h3,
.article-content h3,
.article-body h3 {
  font-size: 20px;
}

.prose blockquote,
.article-content blockquote,
.article-body blockquote {
  margin: 2em 0;
  padding-left: 18px;
  border-left: 2px solid var(--line);
  color: var(--muted);
}

.prose pre,
.article-content pre,
.article-body pre {
  overflow-x: auto;
  margin: 1.75em 0;
  padding: 16px;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--text) 4%, var(--background));
  font-size: 14px;
  line-height: 1.6;
}

.prose :not(pre) > code,
.article-content :not(pre) > code,
.article-body :not(pre) > code {
  padding: 1px 4px;
  border: 1px solid var(--line);
  font-size: 0.9em;
}

.prose img,
.article-content img,
.article-body img {
  margin: 2em 0;
}

.prose table,
.article-content table,
.article-body table {
  display: block;
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  margin: 2em 0;
  border-collapse: collapse;
}

.prose th,
.prose td,
.article-content th,
.article-content td,
.article-body th,
.article-body td {
  padding: 10px;
  border: 1px solid var(--line);
  text-align: left;
}

.article-discussion {
  margin-top: 72px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}

.comments-shell h2 {
  margin: 0 0 20px;
  font-size: 22px;
}

.comment-form,
.comment-fields {
  display: grid;
  gap: 16px;
}

.comment-fields {
  grid-template-columns: 1fr 1fr;
}

.comment-form label {
  display: grid;
  gap: 6px;
  font-size: 14px;
}

.comment-form input,
.comment-form textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 0;
  background: var(--background);
}

.comment-form textarea {
  min-height: 130px;
  resize: vertical;
}

.comment-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.comment-actions button {
  padding: 8px 14px;
  border: 1px solid var(--text);
  border-radius: 0;
  background: var(--text);
  color: var(--background);
}

.comment-actions button:disabled {
  cursor: wait;
  opacity: 0.65;
}

.comment-status,
.muted {
  color: var(--muted);
  font-size: 14px;
}

.comments-list {
  margin-top: 32px;
}

.comment-item {
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.comment-item p {
  margin: 6px 0 0;
}

.project-page {
  max-width: var(--content);
}

.project-meta {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin: 28px 0;
}

.project-meta div {
  display: grid;
  gap: 2px;
}

.project-meta dt {
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
}

.project-meta dd {
  margin: 0;
  color: var(--text);
  font-size: 14px;
}

.project-image {
  max-width: var(--content);
  margin: 0 0 48px;
}

.project-image img {
  width: 100%;
  border: 1px solid var(--line);
}

.project-image figcaption {
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
}

.project-facts dt {
  font-weight: 600;
}

.project-facts dd {
  margin: 4px 0 0;
  color: var(--muted);
}

.project-gallery {
  display: grid;
  gap: 40px;
}

.project-chapter {
  max-width: var(--reading);
}

.empty-state {
  max-width: var(--reading);
  margin: 64px 0;
  padding: 32px 0;
  border-block: 1px solid var(--line);
}

.empty-state h1,
.empty-state h2,
.empty-state h3 {
  margin: 0 0 10px;
  font-size: 28px;
}

.empty-state p {
  margin: 0 0 16px;
  color: var(--muted);
}

@media (max-width: 700px) {
  .site-header-inner {
    grid-template-columns: 1fr auto;
    gap: 18px;
    min-height: 60px;
  }

  .site-nav {
    display: none;
  }

  .site-actions {
    gap: 20px;
  }

  .site-actions .plain-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    min-height: 44px;
  }

  .menu-toggle {
    display: inline;
    order: 1;
  }

  .theme-toggle {
    order: 2;
  }

  .mobile-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0 24px;
    width: min(var(--content), calc(100% - 40px));
    margin: 0 auto;
    padding: 12px 0;
    border-bottom: 1px solid var(--line);
  }

  .mobile-nav-link {
    min-height: 40px;
    display: flex;
    align-items: center;
  }

  .simple-page {
    padding-top: 44px;
  }

  .simple-intro,
  .simple-section {
    margin-bottom: 44px;
  }

  .simple-intro h1,
  .simple-page > .simple-section:first-child h1,
  .section-title,
  .writing-page-header h1,
  .article-header h1,
  .article-title-block h1 {
    font-size: 36px;
  }

  .simple-intro > p,
  .simple-page > .simple-section:first-child .simple-intro,
  .article-dek {
    font-size: 17px;
  }

  .project-row,
  .editorial-archive-link,
  .archive-link {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .project-meta {
    grid-template-columns: 1fr 1fr;
  }

  .comment-fields {
    grid-template-columns: 1fr;
  }

  .comment-actions,
  .site-footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-footer-inner {
    justify-content: center;
    min-height: 112px;
    padding: 20px 0;
  }
}