:root {
  color-scheme: light;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: #1e293b;
  background: #f8fafc;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body.poem-page,
body.poem-list-page {
  min-height: 100vh;
  margin: 0;
  background: #f8fafc;
  color: #1e293b;
}

a {
  color: inherit;
}

.poem-site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid #e2e8f0;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.06);
}

.poem-header-inner,
.poem-detail,
.poem-list-main,
.poem-footer-inner {
  width: min(100% - 2rem, 64rem);
  margin-inline: auto;
}

.poem-breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.45rem;
  max-width: 1040px;
  margin: 0 auto 1rem;
  color: #64748b;
  font-size: 0.875rem;
  line-height: 1.5;
}

.poem-breadcrumb a {
  color: #475569;
  text-decoration: none;
}

.poem-breadcrumb a:hover,
.poem-breadcrumb a:focus-visible {
  color: #9f1239;
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.poem-breadcrumb [aria-current="page"] {
  overflow: hidden;
  max-width: min(32rem, 70vw);
  color: #334155;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.poem-detail {
  width: min(100% - 2rem, 54rem);
  padding-block: 2.5rem;
}

.poem-header-inner {
  display: flex;
  min-height: 4rem;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.poem-brand {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  gap: 0.6rem;
  color: #111827;
  font-weight: 700;
  text-decoration: none;
}

.poem-brand-mark {
  display: grid;
  width: 2rem;
  height: 2rem;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 6px;
  background: #2563eb;
  color: #fff;
  font-family: Georgia, "Songti SC", serif;
  font-size: 1.05rem;
}

.poem-brand-name {
  overflow: hidden;
  font-family: Georgia, "Songti SC", serif;
  font-size: 1.15rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.poem-back-link {
  flex: 0 0 auto;
  color: #475569;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
}

.poem-back-link:hover {
  color: #2563eb;
}

.poem-article {
  overflow: hidden;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.06);
}

.poem-article-header,
.poem-article section {
  margin: 0;
  padding: 1.75rem 2rem;
}

.poem-article-header {
  border-bottom: 1px solid #e2e8f0;
}

.poem-article section + section {
  border-top: 1px solid #f1f5f9;
}

.poem-title {
  margin: 0 0 0.75rem;
  color: #0f172a;
  font-family: Georgia, "Songti SC", serif;
  font-size: clamp(1.8rem, 5vw, 2.25rem);
  line-height: 1.25;
}

.poem-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 0.75rem;
  color: #64748b;
  font-size: 0.95rem;
}

.poem-article h2 {
  margin: 0 0 0.9rem;
  color: #1e293b;
  font-family: Georgia, "Songti SC", serif;
  font-size: 1.25rem;
}

.poem-article p,
.poem-text {
  margin: 0;
  color: #475569;
  line-height: 1.9;
}

.poem-text p + p,
.poem-original p + p {
  margin-top: 1rem;
}

.wenyan-context {
  background: #f8fafc;
}

.wenyan-context-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 20rem), 1fr));
  gap: 1rem;
}

.wenyan-context article {
  padding: 1.15rem 1.25rem;
  border: 1px solid #dbeafe;
  border-radius: 6px;
  background: #fff;
}

.wenyan-context article h2 {
  color: #1d4ed8;
}

.wenyan-translation br + br {
  display: block;
  margin-top: 0.75rem;
  content: "";
}

.wenyan-annotations dl {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 21rem), 1fr));
  gap: 0.75rem;
  margin: 0;
}

.wenyan-annotation {
  display: grid;
  grid-template-columns: minmax(4rem, auto) 1fr;
  gap: 0.75rem;
  align-items: start;
  padding: 0.85rem 1rem;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  background: #f8fafc;
}

.wenyan-annotation dt {
  color: #1d4ed8;
  font-family: Georgia, "Songti SC", serif;
  font-weight: 700;
}

.wenyan-annotation dd {
  margin: 0;
  color: #475569;
  line-height: 1.7;
}

.wenyan-appreciation {
  background: #fffbeb;
}

.wenyan-appreciation .poem-text p + p {
  padding-top: 1rem;
  border-top: 1px solid #fde68a;
}

/* Editorial reading layout for classical detail pages. */
body.classical-detail-page {
  --reader-bg: #f3f2f2;
  --reader-surface: #eae9e9;
  --reader-text: #201f1d;
  --reader-muted: #605d5d;
  --reader-faint: #7d7979;
  --reader-divider: rgba(32, 31, 29, 0.16);
  --reader-accent: #9a6b28;
  background: var(--reader-bg);
  color: var(--reader-text);
  font-family: "Noto Serif SC", "Songti SC", STSong, Georgia, serif;
}

.classical-detail-page .poem-site-header {
  border-color: var(--reader-divider);
  background: rgba(243, 242, 242, 0.94);
  box-shadow: none;
  backdrop-filter: blur(10px);
}

.classical-detail-page .poem-brand-mark {
  border: 1px solid var(--reader-accent);
  border-radius: 2px;
  background: transparent;
  color: var(--reader-accent);
}

.classical-detail-page .poem-brand,
.classical-detail-page .poem-back-link {
  color: var(--reader-text);
}

.classical-detail-page .poem-back-link:hover,
.classical-detail-page .poem-back-link:focus-visible {
  color: var(--reader-accent);
}

.classical-detail-page .poem-detail {
  width: min(100% - 2.5rem, 47.5rem);
  padding-block: 0 6rem;
}

.classical-detail-page .poem-article {
  overflow: visible;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.classical-detail-page .poem-article-header,
.classical-detail-page .poem-article section {
  padding: 0;
}

.classical-detail-page .poem-article section {
  margin-top: 3.5rem;
}

.classical-detail-page .poem-article section + section {
  border: 0;
}

.classical-detail-page .classical-article-header {
  padding: 4.5rem 0 2.5rem;
  border: 0;
  text-align: center;
}

.classical-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.35rem;
  color: var(--reader-faint);
  font-size: 0.875rem;
  font-weight: 500;
}

.classical-kicker-mark {
  display: inline-grid;
  width: 2.125rem;
  height: 2.125rem;
  place-items: center;
  border: 1px solid var(--reader-accent);
  border-radius: 2px;
  color: var(--reader-accent);
  font-size: 1rem;
  font-weight: 600;
}

.classical-detail-page .poem-title {
  margin: 0;
  color: var(--reader-text);
  font-size: 3.5rem;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: 0;
  text-wrap: balance;
}

.classical-detail-page .classical-byline {
  justify-content: center;
  gap: 0.25rem;
  margin-top: 1.1rem;
  color: var(--reader-muted);
  font-size: 1rem;
}

.classical-detail-page .classical-kind {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
}

.classical-detail-page .poem-article h2 {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin: 0 0 1.25rem;
  color: var(--reader-text);
  font-size: 1.4rem;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0;
}

.classical-detail-page .poem-article h2::before {
  width: 0.55rem;
  height: 0.55rem;
  flex: 0 0 auto;
  background: var(--reader-accent);
  content: "";
}

.classical-detail-page .poem-text,
.classical-detail-page .poem-article p {
  max-width: none;
  color: var(--reader-muted);
  font-size: 1rem;
  line-height: 2;
  text-align: justify;
  text-wrap: pretty;
}

.classical-detail-page .wenyan-context {
  background: transparent;
}

.classical-detail-page .wenyan-context-grid {
  display: block;
}

.classical-detail-page .wenyan-context article {
  padding: 1.55rem 1.75rem;
  border: 1px solid var(--reader-divider);
  border-radius: 4px;
  background: transparent;
}

.classical-detail-page .wenyan-context article h2 {
  color: var(--reader-text);
}

.classical-detail-page .poem-annotation-note {
  margin: -0.75rem 0 1.35rem;
  color: var(--reader-faint);
  font-size: 0.8125rem;
  text-align: left;
}

.classical-detail-page .poem-original {
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--reader-text);
  font-size: 1.35rem;
  line-height: 2.2;
  text-align: center;
}

.classical-detail-page .poem-original p {
  color: var(--reader-text);
  font-size: inherit;
  line-height: inherit;
  text-align: center;
}

.classical-detail-page.wenyan-page .poem-original,
.classical-detail-page.wenyan-page .poem-original p {
  text-align: justify;
}

.classical-detail-page.wenyan-page .poem-original p {
  text-indent: 2em;
}

.poem-annotation-trigger {
  border-bottom: 1px dotted var(--reader-accent);
  color: inherit;
  cursor: pointer;
  transition: background-color 160ms ease, color 160ms ease;
}

.poem-annotation-trigger:hover,
.poem-annotation-trigger:focus-visible,
.poem-annotation-trigger[data-active="true"] {
  outline: none;
  background: #ffe3bf;
  color: #5a3b0a;
}

.classical-detail-page .wenyan-translation {
  padding: 1rem 1.25rem;
  background: #fff3e4;
}

.classical-detail-page .wenyan-annotations dl {
  gap: 0;
  border-top: 1px solid var(--reader-divider);
}

.classical-detail-page .wenyan-annotation {
  grid-template-columns: minmax(4.5rem, auto) 1fr;
  padding: 0.9rem 0;
  border: 0;
  border-bottom: 1px solid var(--reader-divider);
  border-radius: 0;
  background: transparent;
}

.classical-detail-page .wenyan-annotation dt {
  color: var(--reader-accent);
}

.classical-detail-page .wenyan-annotation dd {
  color: var(--reader-muted);
}

.classical-detail-page .wenyan-appreciation {
  background: transparent;
}

.classical-detail-page .wenyan-appreciation .poem-text p {
  text-indent: 2em;
}

.classical-detail-page .wenyan-appreciation .poem-text p + p {
  padding-top: 0;
  border: 0;
}

.poem-annotation-backdrop {
  position: fixed;
  inset: 0;
  z-index: 40;
  background: transparent;
}

.poem-annotation-popover {
  position: fixed;
  z-index: 50;
  width: min(21.25rem, calc(100% - 1.5rem));
  padding: 1.1rem 1.25rem;
  border: 1px solid rgba(32, 31, 29, 0.16);
  border-radius: 4px;
  background: #f8f4f4;
  box-shadow: 0 12px 32px rgba(45, 43, 43, 0.22);
  color: #201f1d;
}

.poem-annotation-popover-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.5rem;
}

.poem-annotation-popover strong {
  color: #7d5411;
  font-size: 1.05rem;
}

.poem-annotation-popover button {
  display: grid;
  width: 2rem;
  height: 2rem;
  padding: 0;
  place-items: center;
  border: 0;
  background: transparent;
  color: #605d5d;
  font: inherit;
  font-size: 1.25rem;
  cursor: pointer;
}

.poem-annotation-popover button:hover,
.poem-annotation-popover button:focus-visible {
  outline: 1px solid #b68235;
  color: #201f1d;
}

.poem-annotation-popover p {
  margin: 0;
  color: #605d5d;
  font-size: 0.9rem;
  line-height: 1.85;
}

.classical-detail-page .poem-site-footer {
  border-top: 1px solid var(--reader-divider);
  background: var(--reader-bg);
  color: var(--reader-faint);
}

.poem-original {
  padding: 1.25rem 1.5rem;
  border-left: 4px solid #2563eb;
  background: #f8fafc;
  color: #1e293b;
  font-family: Georgia, "Songti SC", serif;
  font-size: 1.15rem;
  line-height: 2;
}

.poem-list-main {
  padding-block: 2.5rem 4rem;
}

.poem-list-heading {
  margin-bottom: 1.5rem;
}

.poem-list-heading h1 {
  margin: 0 0 0.35rem;
  color: #1d4ed8;
  font-family: Georgia, "Songti SC", serif;
  font-size: clamp(1.75rem, 5vw, 2.2rem);
}

.poem-list-heading p {
  margin: 0;
  color: #64748b;
}

.poem-list {
  overflow: hidden;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.06);
}

.poem-list > a {
  display: block;
  padding: 1rem 1.25rem;
  text-decoration: none;
  transition: background-color 120ms ease;
}

.poem-list > a + a {
  border-top: 1px solid #f1f5f9;
}

.poem-list > a:hover,
.poem-list > a:focus-visible {
  background: #eff6ff;
}

.poem-list h3 {
  margin: 0 0 0.3rem;
  color: #111827;
  font-family: Georgia, "Songti SC", serif;
  font-size: 1.05rem;
  line-height: 1.45;
}

.poem-list p {
  margin: 0;
  color: #64748b;
  font-size: 0.875rem;
}

body.poem-catalog-page {
  background: #f3f2f2;
  color: #201f1d;
  font-family: "Noto Serif SC", "Songti SC", STSong, Georgia, serif;
}

.poem-catalog-page .poem-site-header {
  border-color: rgba(32, 31, 29, 0.16);
  background: rgba(243, 242, 242, 0.94);
  box-shadow: none;
  backdrop-filter: blur(10px);
}

.poem-catalog-page .poem-brand-mark {
  border: 1px solid #9a6b28;
  border-radius: 2px;
  background: transparent;
  color: #9a6b28;
}

.poem-catalog-page .poem-list-main {
  width: min(100% - 2.5rem, 54rem);
  padding-block: 4rem 6rem;
}

.poem-catalog-page .poem-list-heading {
  margin-bottom: 3rem;
}

.poem-catalog-page .poem-list-heading h1 {
  margin: 0.5rem 0 0.75rem;
  color: #201f1d;
  font-size: 2.5rem;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: 0;
}

.poem-catalog-page .poem-list-heading p {
  color: #605d5d;
}

.poem-catalog-page .poem-list-heading .poem-catalog-kicker {
  color: #9a6b28;
  font-size: 0.875rem;
  font-weight: 600;
}

.poem-catalog,
.poem-catalog-items {
  margin: 0;
  padding: 0;
  list-style: none;
}

.poem-catalog {
  display: grid;
  gap: 1.5rem;
}

.poem-catalog-group h2 {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 0 0 0.65rem;
  color: #201f1d;
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.5;
}

.poem-catalog-group h2::before {
  width: 0.5rem;
  height: 0.5rem;
  flex: 0 0 auto;
  background: #9a6b28;
  content: "";
}

.poem-catalog-items {
  display: grid;
  gap: 0.2rem;
  padding-left: 1.25rem;
}

.poem-catalog-link {
  display: grid;
  min-height: 3.5rem;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: center;
  padding: 0.6rem 0.25rem;
  color: #201f1d;
  text-decoration: none;
  transition: color 160ms ease, padding 160ms ease;
}

a.poem-catalog-link:hover,
a.poem-catalog-link:focus-visible {
  padding-inline: 0.75rem;
  outline: none;
  color: #7d5411;
}

.poem-catalog-work {
  display: flex;
  min-width: 0;
  flex-wrap: wrap;
  gap: 0.35rem 0.75rem;
  align-items: baseline;
}

.poem-catalog-work strong {
  min-width: 0;
  font-size: 1.08rem;
  font-weight: 600;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.poem-catalog-work small {
  color: #7d7979;
  font-size: 0.875rem;
}

.poem-catalog-arrow {
  color: #9a6b28;
  font-family: Georgia, serif;
  font-size: 1.5rem;
}

.poem-catalog-link.is-unlinked {
  color: #605d5d;
}

.poem-catalog-status {
  color: #9b9797;
  font-size: 0.75rem;
  white-space: nowrap;
}

.poem-catalog-page .poem-site-footer {
  border-top: 1px solid rgba(32, 31, 29, 0.16);
  background: #f3f2f2;
  color: #7d7979;
}

/* 浅色页脚上的政策链接需要深色文字（common.css 里的浅灰是为深色页脚准备的） */
.classical-detail-page .poem-site-footer .policy-links a,
.poem-catalog-page .poem-site-footer .policy-links a {
  color: var(--reader-muted, #605d5d);
}

.classical-detail-page .poem-site-footer .policy-links a:hover,
.classical-detail-page .poem-site-footer .policy-links a:focus-visible,
.poem-catalog-page .poem-site-footer .policy-links a:hover,
.poem-catalog-page .poem-site-footer .policy-links a:focus-visible {
  color: var(--reader-text, #201f1d);
}

.poem-site-footer {
  padding: 2rem 1rem;
  background: #111827;
  color: #94a3b8;
  text-align: center;
}

.poem-site-footer p {
  margin: 0;
  font-size: 0.82rem;
}

@media (max-width: 640px) {
  .poem-header-inner,
  .poem-detail,
  .poem-list-main {
    width: min(100% - 1.25rem, 64rem);
  }

  .poem-detail,
  .poem-list-main {
    padding-block: 1.25rem 2.5rem;
  }

  .poem-article-header,
  .poem-article section {
    padding: 1.25rem;
  }

  .classical-detail-page .poem-detail {
    width: min(100% - 1.5rem, 47.5rem);
    padding-block: 0 4rem;
  }

  .classical-detail-page .classical-article-header {
    padding: 3.25rem 0 1.5rem;
  }

  .classical-detail-page .poem-article-header,
  .classical-detail-page .poem-article section {
    padding: 0;
  }

  .classical-detail-page .poem-article section {
    margin-top: 3rem;
  }

  .classical-detail-page .poem-title {
    font-size: 2.65rem;
  }

  .classical-detail-page .poem-article h2 {
    font-size: 1.25rem;
  }

  .classical-detail-page .poem-original,
  .classical-detail-page .poem-original p {
    font-size: 1.15rem;
    line-height: 2.1;
  }

  .classical-detail-page .wenyan-context article {
    padding: 1.25rem;
  }

  .classical-detail-page .wenyan-annotation {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }

  .poem-annotation-popover {
    right: 0.75rem;
    bottom: 0.75rem;
    left: 0.75rem;
    width: auto;
  }

  .poem-catalog-page .poem-list-main {
    width: min(100% - 1.5rem, 54rem);
    padding-block: 2.5rem 4rem;
  }

  .poem-catalog-page .poem-list-heading {
    margin-bottom: 2.5rem;
  }

  .poem-catalog-page .poem-list-heading h1 {
    font-size: 2rem;
  }

  .poem-catalog {
    gap: 1.25rem;
  }

  .poem-catalog-link {
    gap: 0.75rem;
  }

  .poem-catalog-work {
    display: grid;
    gap: 0.2rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .poem-list > a {
    transition: none;
  }

  .poem-catalog-link {
    transition: none;
  }
}