:root {
  --paper: #f8f4ec;
  --card: #fffdf8;
  --ink: #1d2433;
  --ink-soft: #4a5164;
  --ink-mute: #6f7688;
  --accent: #e0572b;
  --indigo: #24656b;
  --lemon: #f0b429;
  --line: #ded3c2;
  --line-soft: #eae2d3;
  --shadow-card: 0 1px 0 rgba(29, 36, 51, 0.04);
  --radius: 6px;
  --radius-sm: 4px;
  --container: 1160px;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
  --font-mono: "SF Mono", "JetBrains Mono", "Roboto Mono", Menlo, Consolas, monospace;
}

/* =========================================================
   base
   ========================================================= */

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;
  font-feature-settings: "tnum" 1;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0;
  line-height: 1.35;
}

p {
  margin: 0;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

dl,
dd {
  margin: 0;
}

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

a {
  color: var(--indigo);
  text-decoration: none;
  transition: color 0.18s ease;
}

a:hover,
a:focus-visible {
  color: var(--accent);
}

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

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
}

time {
  font-variant-numeric: tabular-nums;
  font-family: var(--font-mono);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* =========================================================
   layout — 全站骨架
   ========================================================= */

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

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand-block {
  display: flex;
  align-items: baseline;
  gap: 14px;
  min-width: 0;
}

.brand-mark {
  font-size: 22px;
  font-weight: 800;
  color: var(--ink);
  line-height: 1.2;
  white-space: nowrap;
}

.brand-mark:hover,
.brand-mark:focus-visible {
  color: var(--accent);
}

.brand-slogan {
  font-size: 12px;
  color: var(--ink-mute);
  letter-spacing: 0.02em;
  white-space: nowrap;
  padding-left: 14px;
  border-left: 1px solid var(--line);
}

.header-rule {
  height: 3px;
  background: var(--accent);
  max-width: 100%;
}

.site-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-item a {
  display: inline-block;
  padding: 8px 10px;
  font-size: 15px;
  color: var(--ink-soft);
  border-bottom: 2px solid transparent;
  line-height: 1.4;
}

.nav-item a:hover,
.nav-item a:focus-visible {
  color: var(--accent);
}

.nav-item.is-current a {
  color: var(--ink);
  font-weight: 700;
  border-bottom-color: var(--accent);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--ink);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-main {
  display: block;
}

.inner-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px 72px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 20px 0 0;
  font-size: 13px;
  color: var(--ink-mute);
}

.breadcrumb a {
  color: var(--ink-mute);
}

.breadcrumb a:hover,
.breadcrumb a:focus-visible {
  color: var(--accent);
}

.breadcrumb-sep {
  color: var(--line);
}

.breadcrumb-current {
  color: var(--ink-soft);
}

.page-header {
  padding: 8px 0 0;
  margin-bottom: 0;
}

.page-title {
  font-size: 32px;
  line-height: 1.3;
  font-weight: 800;
  color: var(--ink);
  padding-top: 4px;
}

.page-title-block,
.page-head,
.page-hero {
  padding: 18px 0 0;
}

.title-rule,
.page-head-rule,
.page-hero-rule,
.hero-rule {
  display: block;
  width: 56px;
  height: 3px;
  background: var(--accent);
  margin-bottom: 14px;
}

.page-lead {
  font-size: 16px;
  color: var(--ink-soft);
  max-width: 62ch;
  line-height: 1.85;
}

.page-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-top: 12px;
  font-size: 13px;
  color: var(--ink-mute);
  font-variant-numeric: tabular-nums;
}

.page-meta .meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.page-meta .meta-item + .meta-item::before {
  content: "·";
  color: var(--line);
  margin-right: 4px;
}

/* =========================================================
   components — 通用组件
   ========================================================= */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 22px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  line-height: 1.4;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: #c9481f;
  border-color: #c9481f;
  color: #fff;
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  min-height: 24px;
}

.text-link::after {
  content: "→";
  font-size: 13px;
  transition: transform 0.18s ease;
}

.text-link:hover::after,
.text-link:focus-visible::after {
  transform: translateX(3px);
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  margin-bottom: 8px;
}

.section-head h2 {
  font-size: 22px;
  line-height: 1.35;
}

.section-note {
  font-size: 14px;
  color: var(--ink-mute);
  flex-basis: 100%;
  margin-bottom: 0;
}

.section-index {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.04em;
}

.section-desc,
.section-intro {
  font-size: 15px;
  color: var(--ink-soft);
  margin-bottom: 20px;
  max-width: 62ch;
}

.section-title {
  font-size: 22px;
  line-height: 1.35;
}

.group-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.group-index {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.04em;
}

.group-title {
  font-size: 22px;
  white-space: nowrap;
}

.group-line,
.group-rule {
  flex: 1;
  height: 1px;
  background: var(--line);
}

.group-note,
.group-desc {
  font-size: 14px;
  color: var(--ink-mute);
  margin-bottom: 20px;
  max-width: 66ch;
}

.entry-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.entry-list li a {
  display: block;
  padding: 10px 0;
  font-size: 15px;
  color: var(--ink-soft);
  border-bottom: 1px dashed var(--line-soft);
}

.entry-list li:last-child a {
  border-bottom: none;
}

.entry-list li a:hover,
.entry-list li a:focus-visible {
  color: var(--accent);
}

.entry-link {
  font-weight: 500;
}

.table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
}

.table-caption {
  caption-side: top;
  text-align: left;
  font-size: 13px;
  color: var(--ink-mute);
  padding: 12px 16px 0;
}

/* tables */

.schedule-table,
.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}

.schedule-table th,
.schedule-table td,
.compare-table th,
.compare-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--line-soft);
  vertical-align: top;
}

.schedule-table thead th,
.compare-table thead th {
  background: #f2ebdd;
  font-size: 13px;
  font-weight: 700;
  color: var(--ink-soft);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.schedule-table tbody tr:hover,
.compare-table tbody tr:hover {
  background: #fbf6ea;
}

.schedule-table tbody tr:last-child th,
.schedule-table tbody tr:last-child td,
.compare-table tbody tr:last-child th,
.compare-table tbody tr:last-child td {
  border-bottom: none;
}

.schedule-table tbody th,
.compare-table tbody th {
  font-weight: 600;
  color: var(--ink);
  background: #faf5ea;
  white-space: nowrap;
}

.schedule-table tbody td,
.compare-table tbody td {
  color: var(--ink-soft);
}

/* figures */

figure {
  margin: 0;
}

.media-figure,
.hero-visual,
.guide-figure figure,
.schedule-figure,
.about-figure,
.faq-figure,
.content-media {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  overflow: hidden;
}

.media-figure img,
.hero-visual img,
.guide-figure img,
.schedule-figure img,
.about-figure img,
.faq-figure img,
.content-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

figcaption,
.figure-caption {
  display: block;
  padding: 10px 14px;
  font-size: 13px;
  color: var(--ink-mute);
  line-height: 1.6;
  border-top: 1px solid var(--line-soft);
  background: var(--card);
}

/* =========================================================
   pages — 首页
   ========================================================= */

.home-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px 80px;
}

.hero-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 48px;
  align-items: center;
  padding: 48px 0 40px;
}

.hero-copy {
  min-width: 0;
}

.hero-kicker {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.06em;
  margin-bottom: 14px;
  padding: 4px 10px;
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
}

.hero-copy h1 {
  font-size: 40px;
  line-height: 1.25;
  font-weight: 800;
  margin-bottom: 16px;
}

.hero-lead {
  font-size: 16px;
  color: var(--ink-soft);
  line-height: 1.85;
  max-width: 46ch;
  margin-bottom: 24px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-visual {
  aspect-ratio: 4 / 3;
  min-height: 240px;
}

.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.issue-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  overflow: hidden;
  margin-bottom: 56px;
}

.issue-cell {
  padding: 22px 24px;
  border-right: 1px solid var(--line-soft);
  min-width: 0;
}

.issue-cell:last-child {
  border-right: none;
}

.issue-title {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 6px;
}

.issue-text {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.75;
  margin-bottom: 10px;
}

.tag-section {
  margin-bottom: 56px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  font-size: 14px;
  color: var(--ink-soft);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  line-height: 1.5;
  min-height: 36px;
}

.tag:hover,
.tag:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
}

.cover-group {
  margin-bottom: 56px;
}

.cover-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  margin-top: 20px;
}

.cover-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.cover-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.cover-link {
  display: block;
  padding: 14px;
  color: inherit;
}

.cover-link:hover,
.cover-link:focus-visible {
  color: inherit;
}

.cover-figure {
  aspect-ratio: 3 / 4;
  overflow: hidden;
  border-radius: var(--radius-sm);
  background: #f0e8d8;
  margin-bottom: 12px;
}

.cover-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.cover-card:hover .cover-figure img {
  transform: scale(1.03);
}

.cover-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: var(--indigo);
  background: #e8f0ef;
  padding: 2px 8px;
  border-radius: 3px;
  margin-bottom: 8px;
  letter-spacing: 0.02em;
}

.cover-title {
  font-size: 17px;
  line-height: 1.4;
  margin-bottom: 6px;
}

.cover-desc {
  font-size: 13px;
  color: var(--ink-mute);
  line-height: 1.65;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.cover-order {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--ink-mute);
  letter-spacing: 0.04em;
}

.home-split {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  gap: 40px;
  margin-bottom: 56px;
  align-items: start;
}

.split-main,
.split-side {
  min-width: 0;
}

.update-list {
  margin-top: 18px;
  border-top: 1px solid var(--line);
}

.update-row {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr) 84px auto;
  gap: 12px;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 14px;
}

.update-date {
  font-size: 13px;
  color: var(--ink-mute);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.update-topic {
  color: var(--ink);
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.update-type {
  font-size: 12px;
  color: var(--indigo);
  background: #e8f0ef;
  padding: 2px 8px;
  border-radius: 3px;
  text-align: center;
  white-space: nowrap;
}

.update-row .text-link {
  font-size: 13px;
  white-space: nowrap;
}

.mini-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 18px;
  font-size: 14px;
}

.mini-table thead th {
  text-align: left;
  padding: 8px 10px;
  font-size: 12px;
  font-weight: 700;
  color: var(--ink-mute);
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

.mini-table tbody th {
  text-align: left;
  padding: 10px;
  font-weight: 600;
  color: var(--ink);
  border-bottom: 1px solid var(--line-soft);
  white-space: nowrap;
}

.mini-table tbody td {
  padding: 10px;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line-soft);
}

.split-side .text-link {
  margin-top: 14px;
}

.start-guide {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
  gap: 40px;
  align-items: start;
  margin-bottom: 56px;
  padding: 32px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.guide-figure figure {
  aspect-ratio: 4 / 3;
}

.guide-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.guide-steps {
  min-width: 0;
}

.step-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 8px;
}

.step-item {
  position: relative;
  padding: 16px 0 16px 44px;
  border-bottom: 1px dashed var(--line-soft);
}

.step-item:last-child {
  border-bottom: none;
}

.step-num {
  position: absolute;
  left: 0;
  top: 16px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 50%;
  line-height: 1;
}

.step-title {
  font-size: 16px;
  margin-bottom: 4px;
}

.step-text {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.75;
}

.guide-steps > .btn {
  margin-top: 18px;
}

.digest-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 18px;
}

.digest-item {
  padding: 16px 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-sm);
}

.digest-title {
  font-size: 15px;
  margin-bottom: 4px;
}

.digest-text {
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.7;
  margin-bottom: 8px;
}

/* =========================================================
   pages — 内页共用布局
   ========================================================= */

.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 40px;
  margin-top: 32px;
  align-items: start;
}

.layout-main,
.layout-side,
.page-content,
.page-sidebar,
.page-body,
.page-aside {
  min-width: 0;
}

/* sidebar-left：aside 在 DOM 中先出现，桌面端排在左侧 */
.sidebar-left {
  grid-template-columns: 300px minmax(0, 1fr);
}

.sidebar-left .page-aside {
  order: 1;
}

.sidebar-left .page-content {
  order: 2;
}

/* 无侧栏时 page-layout 单列 */
.page-layout:not(:has(.layout-side)):not(:has(.page-sidebar)):not(:has(.page-aside)) {
  grid-template-columns: minmax(0, 1fr);
}

/* 面包屑在 page-content 内的页，主内容区补顶部间距 */
.page-content > .breadcrumb {
  padding-top: 0;
}

/* sidebar blocks */

.side-block,
.sidebar-block,
.aside-block {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-bottom: 20px;
}

.side-title,
.sidebar-title,
.aside-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  padding-bottom: 10px;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--line-soft);
  letter-spacing: 0.02em;
}

.toc-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.toc-item a {
  display: block;
  padding: 7px 10px;
  font-size: 14px;
  color: var(--ink-soft);
  border-left: 2px solid transparent;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  line-height: 1.5;
}

.toc-item a:hover,
.toc-item a:focus-visible {
  color: var(--accent);
  background: #fbf6ea;
}

.toc-item a.is-active {
  color: var(--accent);
  border-left-color: var(--accent);
  background: #fbf6ea;
  font-weight: 600;
}

.link-list,
.related-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.link-list li a,
.related-list li a {
  display: block;
  padding: 8px 0;
  font-size: 14px;
  color: var(--ink-soft);
  border-bottom: 1px dashed var(--line-soft);
}

.link-list li:last-child a,
.related-list li:last-child a {
  border-bottom: none;
}

.link-list li a:hover,
.related-list li a:hover {
  color: var(--accent);
}

/* content sections */

.content-section {
  margin-bottom: 56px;
}

.content-section:last-child {
  margin-bottom: 0;
}

.content-section .section-head {
  margin-bottom: 10px;
}

.content-section .section-head .section-title {
  font-size: 22px;
}

/* =========================================================
   pages — 题材目录（library）
   ========================================================= */

.page-title-block {
  margin-bottom: 0;
}

.tag-overview {
  margin-bottom: 48px;
}

.tag-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 10px;
  margin-top: 18px;
}

.tag-item {
  min-width: 0;
}

.tag-link {
  display: block;
  padding: 10px 14px;
  font-size: 14px;
  color: var(--ink-soft);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  text-align: center;
  line-height: 1.5;
}

.tag-link:hover,
.tag-link:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
  background: #fbf6ea;
}

.tag-note {
  font-size: 13px;
  color: var(--ink-mute);
  margin-top: 14px;
}

.theme-group {
  margin-bottom: 48px;
}

.theme-entry {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 18px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-soft);
  align-items: start;
}

.theme-entry:last-child {
  border-bottom: none;
}

.entry-cover {
  aspect-ratio: 3 / 4;
  overflow: hidden;
  border-radius: var(--radius-sm);
  background: #f0e8d8;
  border: 1px solid var(--line-soft);
}

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

.entry-body {
  min-width: 0;
}

.entry-title {
  font-size: 17px;
  margin-bottom: 6px;
}

.entry-threshold,
.entry-rhythm {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.7;
  margin-bottom: 4px;
}

.entry-threshold::before {
  content: "门槛 · ";
  color: var(--indigo);
  font-weight: 600;
}

.entry-rhythm::before {
  content: "节奏 · ";
  color: var(--accent);
  font-weight: 600;
}

.cross-group {
  padding-top: 8px;
}

.cross-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.cross-item {
  padding: 16px 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.cross-title {
  font-size: 15px;
  margin-bottom: 4px;
}

.cross-desc {
  font-size: 13px;
  color: var(--ink-mute);
  line-height: 1.7;
}

.side-count .count-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.count-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 8px 0;
  border-bottom: 1px dashed var(--line-soft);
  font-size: 14px;
}

.count-row:last-child {
  border-bottom: none;
}

.count-row dt {
  color: var(--ink-soft);
}

.count-row dd {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.count-note {
  font-size: 12px;
  color: var(--ink-mute);
  margin-top: 10px;
  line-height: 1.6;
}

.related-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 18px;
  margin-top: 32px;
  padding: 18px 20px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.related-links-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--ink-mute);
  letter-spacing: 0.02em;
}

.related-links-item {
  font-size: 14px;
  color: var(--indigo);
  padding: 4px 0;
}

.related-links-item:hover,
.related-links-item:focus-visible {
  color: var(--accent);
}

/* =========================================================
   pages — 新读者入门（start）
   ========================================================= */

.figure-text-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 28px;
  align-items: start;
  margin-top: 20px;
}

.figure-text-row .media-figure {
  aspect-ratio: 4 / 3;
}

.mark-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.mark-item {
  position: relative;
  padding: 10px 0 10px 26px;
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.7;
  border-bottom: 1px dashed var(--line-soft);
}

.mark-item:last-child {
  border-bottom: none;
}

.mark-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
}

.mark-title {
  display: block;
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 2px;
}

.content-section .step-list {
  margin-top: 18px;
}

.content-section .step-item {
  padding: 16px 0 16px 44px;
  border-bottom: 1px dashed var(--line-soft);
}

.content-section .step-item:last-child {
  border-bottom: none;
}

.content-section .step-item .step-title {
  font-size: 16px;
  margin-bottom: 4px;
}

.content-section .step-item p {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.75;
  margin-bottom: 6px;
}

.pitfall-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.pitfall-item {
  padding: 16px 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-top: 3px solid var(--lemon);
  border-radius: var(--radius-sm);
}

.pitfall-title {
  font-size: 15px;
  margin-bottom: 6px;
}

.pitfall-item p {
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.7;
}

.next-section .entry-list {
  margin-top: 16px;
}

/* =========================================================
   pages — 追更时刻表（schedule）
   ========================================================= */

.schedule-figure {
  aspect-ratio: 16 / 7;
  margin: 20px 0;
}

.schedule-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.schedule-table {
  min-width: 560px;
}

.table-note {
  font-size: 13px;
  color: var(--ink-mute);
  margin-top: 12px;
}

.field-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 16px;
  border-top: 1px solid var(--line);
}

.field-item {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 20px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-soft);
}

.field-term {
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

.field-desc {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.75;
}

.group-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 16px;
  border-top: 1px solid var(--line);
}

.group-item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 14px;
}

.group-item a {
  font-weight: 600;
  color: var(--indigo);
  white-space: nowrap;
}

.group-item a:hover,
.group-item a:focus-visible {
  color: var(--accent);
}

.group-note {
  font-size: 13px;
  color: var(--ink-mute);
  text-align: right;
}

.section-foot {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-top: 18px;
  font-size: 14px;
}

.section-foot a {
  color: var(--accent);
  font-weight: 600;
}

/* =========================================================
   pages — 更新记录（updates）
   ========================================================= */

.page-head {
  margin-bottom: 32px;
}

.content-media-inline {
  margin-top: 20px;
  max-width: 640px;
}

.content-media-inline img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

.type-bar {
  margin-bottom: 40px;
}

.type-bar-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--ink-mute);
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}

.type-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.type-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  min-height: 44px;
}

.type-tag {
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  padding: 2px 8px;
  background: #fbe9e1;
  border-radius: 3px;
  white-space: nowrap;
}

.type-desc {
  font-size: 13px;
  color: var(--ink-mute);
}

.update-group {
  margin-bottom: 40px;
}

.update-group .update-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 12px;
  border-top: 1px solid var(--line);
}

.update-item {
  display: grid;
  grid-template-columns: 100px minmax(0, 1fr) auto;
  gap: 20px;
  align-items: start;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-soft);
}

.update-item .update-date {
  font-size: 13px;
  color: var(--ink-mute);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  padding-top: 2px;
}

.update-body {
  min-width: 0;
}

.update-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 4px;
}

.update-text {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.75;
  margin-bottom: 8px;
}

.update-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-type {
  font-size: 12px;
  font-weight: 700;
  color: var(--accent);
  background: #fbe9e1;
  padding: 2px 8px;
  border-radius: 3px;
}

.tag-topic {
  font-size: 12px;
  color: var(--indigo);
  background: #e8f0ef;
  padding: 2px 8px;
  border-radius: 3px;
}

.update-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  white-space: nowrap;
  padding-top: 2px;
}

.topic-back {
  margin-top: 48px;
  padding: 24px 26px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.topic-back-title {
  font-size: 18px;
  margin-bottom: 6px;
}

.topic-back-note {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 16px;
}

.topic-back-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 10px;
}

.topic-back-list li a {
  display: block;
  padding: 10px 14px;
  font-size: 14px;
  color: var(--ink-soft);
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
}

.topic-back-list li a:hover,
.topic-back-list li a:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
}

.topic-back-more {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-top: 16px;
  font-size: 14px;
}

.topic-back-more a {
  color: var(--accent);
  font-weight: 600;
}

.help-entry {
  margin-top: 32px;
  padding: 24px 26px;
  background: #f2ebdd;
  border-radius: var(--radius);
}

.help-entry-title {
  font-size: 18px;
  margin-bottom: 6px;
}

.help-entry-text {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 12px;
  max-width: 62ch;
}

.help-entry-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  color: var(--accent);
  min-height: 44px;
}

.help-entry-link::after {
  content: "→";
  font-size: 13px;
  transition: transform 0.18s ease;
}

.help-entry-link:hover::after {
  transform: translateX(3px);
}

/* =========================================================
   pages — 阅读帮助（help）
   ========================================================= */

.page-title-area {
  padding: 18px 0 0;
}

.page-body {
  margin-top: 32px;
}

.help-index {
  margin-bottom: 48px;
  padding: 22px 26px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.help-index h2 {
  font-size: 18px;
  margin-bottom: 6px;
}

.help-index-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-top: 14px;
  counter-reset: helpidx;
}

.help-index-list li {
  counter-increment: helpidx;
}

.help-index-list li a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  font-size: 15px;
  color: var(--ink-soft);
  border-bottom: 1px dashed var(--line-soft);
  min-height: 44px;
}

.help-index-list li:last-child a {
  border-bottom: none;
}

.help-index-list li a:hover,
.help-index-list li a:focus-visible {
  color: var(--accent);
  background: #fbf6ea;
  border-radius: var(--radius-sm);
}

.index-num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.04em;
  min-width: 24px;
}

.faq-group {
  margin-bottom: 48px;
}

.faq-group .group-head {
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.faq-group .group-head h2 {
  font-size: 20px;
}

.group-num {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.04em;
}

.faq-group .group-note {
  flex-basis: 100%;
  margin-bottom: 0;
}

.faq-figure {
  aspect-ratio: 16 / 7;
  margin: 16px 0 20px;
}

.faq-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--line);
}

.faq-item {
  border-bottom: 1px solid var(--line-soft);
}

.faq-item summary {
  position: relative;
  display: block;
  padding: 16px 40px 16px 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
  line-height: 1.6;
  min-height: 44px;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  font-weight: 400;
  color: var(--accent);
  line-height: 1;
  transition: transform 0.2s ease;
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-item summary:hover {
  color: var(--accent);
}

.faq-answer {
  padding: 0 0 16px;
}

.faq-answer p {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.8;
  max-width: 66ch;
}

.correction-points {
  margin-top: 48px;
  padding: 24px 26px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.correction-points h2 {
  font-size: 20px;
  margin-bottom: 6px;
}

.correction-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.correction-list li {
  padding: 14px 16px;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
}

.correction-list h3 {
  font-size: 15px;
  margin-bottom: 4px;
}

.correction-list p {
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.7;
}

.help-next {
  margin-top: 48px;
}

.help-next h2 {
  font-size: 20px;
  margin-bottom: 6px;
}

.help-next .entry-list {
  margin-top: 14px;
}

/* =========================================================
   pages — 关于本站（about）
   ========================================================= */

.about-section {
  margin-bottom: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--line);
}

.about-section:last-of-type {
  border-bottom: none;
}

.about-section .section-head {
  margin-bottom: 10px;
}

.about-section .section-text {
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.85;
  margin-bottom: 16px;
  max-width: 66ch;
}

.about-figure {
  aspect-ratio: 16 / 7;
  margin: 20px 0;
}

.about-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-points {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--line-soft);
}

.about-points li {
  position: relative;
  padding: 10px 0 10px 24px;
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.75;
  border-bottom: 1px dashed var(--line-soft);
}

.about-points li:last-child {
  border-bottom: none;
}

.about-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  width: 8px;
  height: 8px;
  background: var(--indigo);
  border-radius: 50%;
}

.about-link-line {
  margin-top: 16px;
  font-size: 14px;
}

.about-link-line a {
  color: var(--accent);
  font-weight: 600;
}

.about-next {
  margin-top: 32px;
  padding: 24px 26px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.about-next .section-title {
  font-size: 18px;
  margin-bottom: 6px;
}

.about-next .section-text {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 12px;
}

/* =========================================================
   pages — 404
   ========================================================= */

.error-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 64px 24px 80px;
}

.error-panel {
  max-width: 640px;
  padding: 40px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.error-code {
  font-family: var(--font-mono);
  font-size: 56px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

.error-panel h1 {
  font-size: 28px;
  margin-bottom: 12px;
}

.error-lead {
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.8;
  margin-bottom: 8px;
}

.error-tip {
  font-size: 14px;
  color: var(--ink-mute);
  line-height: 1.75;
  margin-bottom: 24px;
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.error-links {
  margin-top: 48px;
}

.error-links h2 {
  font-size: 20px;
  margin-bottom: 6px;
}

.error-links p {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 16px;
}

.error-link-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 10px;
}

.error-link-list li a {
  display: block;
  padding: 12px 16px;
  font-size: 14px;
  color: var(--ink-soft);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  min-height: 44px;
}

.error-link-list li a:hover,
.error-link-list li a:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
}

/* =========================================================
   layout — 页脚
   ========================================================= */

.site-footer {
  background: #1a1f2c;
  color: #c9c3b6;
  margin-top: 40px;
}

.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 56px 24px 32px;
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr));
  gap: 40px;
}

.footer-col {
  min-width: 0;
}

.footer-brand {
  font-size: 20px;
  font-weight: 800;
  color: #f5f0e5;
  margin-bottom: 10px;
  line-height: 1.3;
}

.footer-desc {
  font-size: 13px;
  color: #9d968a;
  line-height: 1.8;
  max-width: 34ch;
}

.footer-title {
  font-size: 14px;
  font-weight: 700;
  color: #f5f0e5;
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}

.footer-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.footer-list li a {
  display: block;
  padding: 6px 0;
  font-size: 13px;
  color: #b0a99c;
  line-height: 1.6;
}

.footer-list li a:hover,
.footer-list li a:focus-visible {
  color: var(--lemon);
}

.footer-bottom {
  max-width: var(--container);
  margin: 0 auto;
  padding: 20px 24px 32px;
  border-top: 1px solid #2e3546;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 20px;
  font-size: 12px;
  color: #8b8478;
}

.footer-note {
  flex: 1 1 320px;
  min-width: 0;
  line-height: 1.7;
}

.footer-copy {
  flex: 0 0 auto;
  line-height: 1.7;
}

.back-top {
  flex: 0 0 auto;
  color: #b0a99c;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding: 0 4px;
}

.back-top:hover,
.back-top:focus-visible {
  color: var(--lemon);
}

/* =========================================================
   responsive
   ========================================================= */

@media (max-width: 980px) {
  .header-inner {
    min-height: 60px;
    padding: 0 16px;
    gap: 12px;
  }

  .brand-mark {
    font-size: 19px;
  }

  .brand-slogan {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 8px 18px rgba(29, 36, 51, 0.08);
    z-index: 30;
    padding: 0;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 0;
  }

  .nav-list.is-open {
    display: flex;
  }

  .nav-item {
    border-bottom: 1px solid var(--line-soft);
  }

  .nav-item:last-child {
    border-bottom: none;
  }

  .nav-item a {
    display: flex;
    align-items: center;
    min-height: 48px;
    padding: 0 20px;
    border-bottom: none;
    border-left: 3px solid transparent;
    font-size: 15px;
  }

  .nav-item.is-current a {
    border-left-color: var(--accent);
    background: #fbf6ea;
  }

  .inner-main {
    padding: 0 16px 56px;
  }

  .home-main {
    padding: 0 16px 56px;
  }

  .hero-section {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
    padding: 32px 0 32px;
  }

  .hero-copy h1 {
    font-size: 30px;
  }

  .hero-visual {
    aspect-ratio: 16 / 10;
    min-height: 0;
  }

  .issue-strip {
    grid-template-columns: minmax(0, 1fr);
    margin-bottom: 40px;
  }

  .issue-cell {
    border-right: none;
    border-bottom: 1px solid var(--line-soft);
    padding: 18px 20px;
  }

  .issue-cell:last-child {
    border-bottom: none;
  }

  .tag-section,
  .cover-group,
  .home-split,
  .start-guide {
    margin-bottom: 40px;
  }

  .cover-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .home-split {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }

  .start-guide {
    grid-template-columns: minmax(0, 1fr);
    padding: 22px;
    gap: 24px;
  }

  .page-title {
    font-size: 26px;
  }

  .page-layout,
  .sidebar-left {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
    margin-top: 24px;
  }

  .sidebar-left .page-aside,
  .sidebar-left .page-content {
    order: 0;
  }

  .page-aside {
    order: 2;
  }

  .page-content {
    order: 1;
  }

  .layout-main,
  .page-content {
    order: 1;
  }

  .layout-side,
  .page-sidebar {
    order: 2;
  }

  .figure-text-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
  }

  .theme-entry {
    grid-template-columns: 100px minmax(0, 1fr);
    gap: 14px;
  }

  .update-item {
    grid-template-columns: 88px minmax(0, 1fr);
    gap: 14px;
  }

  .update-item .update-link {
    grid-column: 2;
    padding-top: 0;
  }

  .update-row {
    grid-template-columns: 84px minmax(0, 1fr) auto;
    gap: 8px 10px;
  }

  .update-row .text-link {
    grid-column: 2 / 4;
    justify-self: start;
  }

  .field-item {
    grid-template-columns: 100px minmax(0, 1fr);
    gap: 14px;
  }

  .footer-inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px;
    padding: 40px 16px 24px;
  }

  .footer-about {
    grid-column: 1 / -1;
  }

  .footer-bottom {
    padding: 16px 16px 24px;
  }

  .error-main {
    padding: 40px 16px 56px;
  }

  .error-panel {
    padding: 28px 22px;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15px;
  }

  .hero-copy h1 {
    font-size: 26px;
  }

  .hero-actions {
    gap: 10px;
  }

  .hero-actions .btn {
    flex: 1 1 140px;
  }

  .cover-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
  }

  .cover-figure {
    aspect-ratio: 3 / 4;
  }

  .section-head h2 {
    font-size: 20px;
  }

  .group-title {
    font-size: 19px;
    white-space: normal;
  }

  .update-row {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 4px 10px;
    padding: 14px 0;
  }

  .update-row .update-date {
    grid-column: 1;
    grid-row: 1;
  }

  .update-row .update-type {
    grid-column: 2;
    grid-row: 1;
    justify-self: end;
  }

  .update-row .update-topic {
    grid-column: 1 / -1;
    grid-row: 2;
    white-space: normal;
  }

  .update-row .text-link {
    grid-column: 1 / -1;
    grid-row: 3;
  }

  .theme-entry {
    grid-template-columns: 88px minmax(0, 1fr);
    gap: 12px;
  }

  .entry-title {
    font-size: 16px;
  }

  .update-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }

  .update-item .update-link {
    grid-column: 1;
  }

  .field-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

  .group-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .group-note {
    text-align: left;
  }

  .page-title {
    font-size: 26px;
  }

  .page-lead {
    font-size: 15px;
  }

  .tag-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cross-list,
  .pitfall-list,
  .correction-list,
  .topic-back-list,
  .error-link-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

  .footer-about {
    grid-column: auto;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .footer-note {
    flex-basis: auto;
  }

  .help-index,
  .correction-points,
  .topic-back,
  .help-entry,
  .about-next {
    padding: 18px 18px;
  }

  .error-code {
    font-size: 44px;
  }

  .error-panel h1 {
    font-size: 22px;
  }

  .schedule-table {
    min-width: 520px;
  }
}

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

  .cover-card:hover,
  .cover-card:hover .cover-figure img {
    transform: none;
  }
}

/* 程序验收反馈：移动端正文优先 */
@media (max-width: 768px) {
  .site-main :is(.page-content, .main-content, .content-main) {
    order: 1;
  }

  .site-main :is(aside, .sidebar) {
    order: 2;
  }
}