/* ==========================================================================
   奇漫屋 lanmeipo.cn — 全站样式表
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   base：变量、重置、排版基础
   -------------------------------------------------------------------------- */

:root {
  --canvas: #f4f4f2;
  --surface: #ffffff;
  --ink: #1f1f1f;
  --ink-soft: #6b6b66;
  --ink-faint: #8d8d86;
  --line: #d8d8d2;
  --line-strong: #b9b9b1;
  --accent: #8a5a2b;
  --accent-soft: #f0e7dd;
  --thumb-bg: #e6e6e0;
  --radius: 6px;
  --radius-sm: 4px;
  --shell: 1180px;
  --prose: 720px;
  --aside-w: 180px;
  --toc-w: 200px;
  --sans: "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --mono: "SFMono-Regular", "Menlo", "Consolas", "Liberation Mono", monospace;
}

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

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

body {
  margin: 0;
  background-color: var(--canvas);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  font-weight: 400;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-weight: 600;
  line-height: 1.4;
  color: var(--ink);
}

p {
  margin: 0 0 1em;
}

p:last-child {
  margin-bottom: 0;
}

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

dl,
dd,
dt,
figure,
figcaption {
  margin: 0;
}

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

a:hover,
a:focus-visible {
  color: #6d4520;
}

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

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

table {
  border-collapse: collapse;
  width: 100%;
}

th,
td {
  text-align: left;
  font-weight: 400;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

time {
  font-variant-numeric: tabular-nums;
}

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

.meta-code {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0;
  color: var(--ink-faint);
}

.meta-sep {
  display: inline-block;
  margin: 0 0.4em;
  color: var(--line-strong);
}

/* --------------------------------------------------------------------------
   layout：页头、导航、主容器、页脚骨架
   -------------------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background-color: rgba(244, 244, 242, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: saturate(120%) blur(6px);
}

.header-inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 24px;
  min-height: 64px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.brand {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 2px;
  min-height: 44px;
  padding: 8px 0;
  color: var(--ink);
  flex: 0 0 auto;
}

.brand-name {
  font-size: 1.15rem;
  font-weight: 600;
  line-height: 1.2;
}

.brand-tag {
  font-size: 0.72rem;
  line-height: 1.2;
  color: var(--ink-soft);
}

.site-nav {
  margin-left: auto;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-list > li {
  display: flex;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 14px;
  color: var(--ink-soft);
  font-size: 0.95rem;
  border-bottom: 2px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--ink);
  border-bottom-color: var(--line-strong);
}

.nav-link.is-current {
  color: var(--ink);
  font-weight: 600;
  border-bottom-color: var(--accent);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  margin-left: auto;
  padding: 10px;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background-color: var(--surface);
}

.nav-toggle-bar {
  display: block;
  height: 2px;
  width: 100%;
  background-color: 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;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 32px 24px 64px;
}

.inner-main {
  padding-top: 28px;
}

/* 内页三段结构：版本栏 / 主题目录 / 正文 */
.page-layout {
  display: grid;
  grid-template-columns: var(--aside-w) var(--toc-w) minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

.sidebar-left .page-layout,
.page-layout.sidebar-left {
  grid-template-columns: var(--aside-w) var(--toc-w) minmax(0, 1fr);
}

.page-content {
  min-width: 0;
  max-width: var(--prose);
}

/* 页脚 */
.site-footer {
  border-top: 1px solid var(--line);
  background-color: #eeeee9;
}

.footer-inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 40px 24px 28px;
  display: grid;
  grid-template-columns: minmax(220px, 1fr) minmax(0, 2.1fr);
  gap: 32px;
}

.footer-brand-name {
  font-size: 1.02rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.footer-desc {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--ink-soft);
  margin: 0;
  max-width: 320px;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.footer-group-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 10px;
}

.footer-group ul {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-group a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  font-size: 0.88rem;
  color: var(--ink-soft);
}

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

.footer-copy {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 24px 28px;
  font-size: 0.8rem;
  color: var(--ink-faint);
}

/* --------------------------------------------------------------------------
   components：通用区块、表格、按钮、卡片、列表、FAQ
   -------------------------------------------------------------------------- */

.section-head {
  margin-bottom: 20px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 14px;
}

.section-head h2 {
  font-size: 1.32rem;
  margin-bottom: 6px;
}

.section-head p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--ink-soft);
  max-width: 720px;
}

.section-title {
  font-size: 1.28rem;
  margin-bottom: 10px;
}

.section-intro,
.section-desc {
  font-size: 0.94rem;
  color: var(--ink-soft);
  max-width: 720px;
  margin-bottom: 18px;
}

.section-foot {
  margin-top: 18px;
  font-size: 0.92rem;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.section-footnote {
  margin-top: 18px;
  font-size: 0.92rem;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.link-more {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  font-size: 0.92rem;
}

.link-more::after {
  content: "→";
  margin-left: 6px;
  font-size: 0.9em;
}

/* 数据表格 */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--surface);
}

.data-table {
  min-width: 620px;
  font-size: 0.92rem;
}

.data-table caption {
  text-align: left;
}

.data-table thead th {
  padding: 12px 14px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ink-soft);
  background-color: #faf9f7;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

.data-table tbody th {
  padding: 14px;
  font-weight: 600;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
  vertical-align: top;
}

.data-table tbody td {
  padding: 14px;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  line-height: 1.7;
}

.data-table tbody tr:last-child th,
.data-table tbody tr:last-child td {
  border-bottom: 0;
}

.data-table tbody tr:hover {
  background-color: #faf9f7;
}

.table-caption {
  padding: 12px 14px 0;
  font-size: 0.82rem;
  color: var(--ink-faint);
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.btn-primary {
  background-color: var(--accent);
  color: #fdfaf6;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background-color: #6d4520;
  color: #ffffff;
}

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

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

/* 内容图 */
.content-figure {
  margin: 22px 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background-color: var(--surface);
}

.content-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background-color: var(--thumb-bg);
}

.content-figure figcaption,
.figure-caption {
  padding: 10px 14px;
  font-size: 0.82rem;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
}

/* 编号步骤 */
.step-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  counter-reset: step;
}

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

.step-title {
  font-size: 1rem;
  margin-bottom: 6px;
}

.step-desc {
  font-size: 0.92rem;
  color: var(--ink-soft);
  margin-bottom: 6px;
}

.step-note,
.step-tip {
  font-size: 0.84rem;
  color: var(--ink-faint);
  margin: 0;
}

/* 说明卡片 */
.note-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}

.note-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--surface);
  padding: 18px;
}

.note-title {
  font-size: 1rem;
  margin-bottom: 8px;
}

.note-text {
  font-size: 0.92rem;
  color: var(--ink-soft);
  margin: 0;
}

/* 侧栏与目录 */
.page-aside {
  font-size: 0.88rem;
}

.aside-block + .aside-block {
  margin-top: 22px;
}

.aside-title,
.toc-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ink-soft);
  margin-bottom: 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--line);
}

.aside-meta,
.version-list {
  display: grid;
  grid-template-columns: auto;
  gap: 2px;
}

.aside-meta dt,
.version-list dt {
  font-size: 0.78rem;
  color: var(--ink-faint);
  margin-top: 8px;
}

.aside-meta dd,
.version-list dd {
  font-size: 0.86rem;
  color: var(--ink);
  word-break: break-word;
}

.aside-note {
  margin-top: 18px;
  font-size: 0.84rem;
  color: var(--ink-soft);
}

.page-toc {
  font-size: 0.88rem;
}

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

.toc-list > li {
  counter-increment: toc;
}

.toc-list a {
  display: flex;
  align-items: baseline;
  min-height: 34px;
  padding: 6px 0;
  color: var(--ink-soft);
  border-bottom: 1px solid transparent;
}

.toc-list a::before {
  content: counter(toc, decimal-leading-zero);
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--ink-faint);
  margin-right: 8px;
}

.toc-list a:hover,
.toc-list a:focus-visible {
  color: var(--accent);
  border-bottom-color: var(--line);
}

/* 面包屑与页标题区 */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.84rem;
  color: var(--ink-soft);
  margin-bottom: 16px;
}

.breadcrumb a {
  color: var(--ink-soft);
  min-height: 28px;
  display: inline-flex;
  align-items: center;
}

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

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

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

.page-header {
  padding-bottom: 20px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.page-title {
  font-size: 1.72rem;
  font-weight: 600;
  line-height: 1.35;
  margin-bottom: 10px;
}

.page-description {
  font-size: 0.95rem;
  color: var(--ink-soft);
  max-width: 720px;
  margin: 0;
}

.page-lead {
  font-size: 0.95rem;
  color: var(--ink-soft);
  max-width: 720px;
  margin: 12px 0 0;
}

/* 内容区通用节奏 */
.content-section {
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}

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

/* --------------------------------------------------------------------------
   pages：首页
   -------------------------------------------------------------------------- */

.home-main {
  padding-top: 36px;
}

.home-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: 32px;
  align-items: start;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--line);
}

.hero-copy {
  max-width: 560px;
}

.hero-meta {
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--ink-faint);
  margin-bottom: 12px;
}

.hero-title {
  font-size: 2.1rem;
  line-height: 1.3;
  margin-bottom: 14px;
}

.hero-lead {
  font-size: 1rem;
  color: var(--ink-soft);
  margin-bottom: 10px;
}

.hero-note {
  font-size: 0.88rem;
  color: var(--ink-faint);
  margin-bottom: 22px;
}

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

.hero-figure {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background-color: var(--surface);
}

.hero-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background-color: var(--thumb-bg);
}

.hero-figure .meta-code {
  display: block;
  padding: 10px 14px;
  border-top: 1px solid var(--line);
}

.content-media {
  grid-column: 1 / -1;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background-color: var(--surface);
}

.content-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 21 / 9;
  object-fit: cover;
  background-color: var(--thumb-bg);
}

.content-media figcaption {
  padding: 10px 14px;
  font-size: 0.82rem;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
}

.home-theme-table,
.home-field-boundary,
.home-recent-updates,
.home-editor-picks,
.home-page-index {
  padding: 36px 0;
  border-bottom: 1px solid var(--line);
}

.home-page-index {
  border-bottom: 0;
  padding-bottom: 0;
}

.theme-summary-table tbody th a {
  color: var(--ink);
}

.theme-summary-table tbody th a:hover,
.theme-summary-table tbody th a:focus-visible {
  color: var(--accent);
}

.field-boundary-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  gap: 28px;
}

.field-column h3,
.boundary-column h3 {
  font-size: 1rem;
  margin-bottom: 12px;
}

.field-brief-list {
  display: grid;
  grid-template-columns: minmax(0, 96px) minmax(0, 1fr);
  gap: 8px 14px;
  font-size: 0.9rem;
}

.field-brief-list dt {
  font-weight: 600;
  color: var(--ink);
  border-top: 1px solid var(--line);
  padding-top: 8px;
}

.field-brief-list dd {
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
  padding-top: 8px;
}

.boundary-column p {
  font-size: 0.94rem;
  color: var(--ink-soft);
}

.update-groups {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.update-month {
  font-size: 0.98rem;
  padding-bottom: 8px;
  margin-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.update-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.update-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  font-size: 0.9rem;
}

.update-date {
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--ink-faint);
}

.update-type {
  display: inline-block;
  justify-self: start;
  padding: 1px 8px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-size: 0.72rem;
  color: var(--ink-soft);
}

.update-text {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.7;
}

.picks-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.pick-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--surface);
  padding: 20px;
}

.pick-card h3 {
  font-size: 1.02rem;
  margin-bottom: 6px;
}

.pick-basis {
  font-size: 0.82rem;
  color: var(--ink-faint);
  margin-bottom: 12px;
}

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

.pick-list li {
  font-size: 0.9rem;
  color: var(--ink-soft);
  padding-top: 10px;
  border-top: 1px solid var(--line);
  line-height: 1.7;
}

.index-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.index-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--surface);
  padding: 18px;
}

.index-card h3 {
  font-size: 0.98rem;
  margin-bottom: 8px;
}

.index-card h3 a {
  color: var(--ink);
}

.index-card h3 a:hover,
.index-card h3 a:focus-visible {
  color: var(--accent);
}

.index-card p {
  font-size: 0.86rem;
  color: var(--ink-soft);
  margin: 0;
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   pages：题材分类
   -------------------------------------------------------------------------- */

.theme-table {
  min-width: 660px;
}

.theme-note {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.theme-note:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.theme-note .note-title {
  font-size: 1rem;
  margin-bottom: 6px;
}

.theme-note .note-text {
  margin-bottom: 6px;
}

.theme-note .note-tip {
  font-size: 0.84rem;
  color: var(--ink-faint);
  margin: 0;
}

.advice-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
  counter-reset: advice;
}

.advice-item {
  counter-increment: advice;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--surface);
  padding: 18px;
}

.advice-title {
  font-size: 1rem;
  margin-bottom: 8px;
}

.advice-title::before {
  content: counter(advice, decimal-leading-zero);
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--accent);
  margin-right: 8px;
}

.advice-text {
  font-size: 0.92rem;
  color: var(--ink-soft);
  margin-bottom: 6px;
}

.advice-result {
  font-size: 0.84rem;
  color: var(--ink-faint);
  margin: 0;
}

.entry-links {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.entry-link-col {
  border-top: 1px solid var(--line);
  padding-top: 14px;
}

.entry-link-title {
  font-size: 0.96rem;
  margin-bottom: 8px;
}

.entry-link-text {
  font-size: 0.88rem;
  color: var(--ink-soft);
  margin-bottom: 10px;
}

.entry-link {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  font-size: 0.9rem;
}

.entry-link::after {
  content: "→";
  margin-left: 6px;
  font-size: 0.9em;
}

/* --------------------------------------------------------------------------
   pages：条目索引
   -------------------------------------------------------------------------- */

.field-table {
  min-width: 640px;
}

.field-table .field-name {
  font-family: var(--mono);
  font-size: 0.84rem;
  color: var(--ink);
}

.entry-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.entry-item {
  display: grid;
  grid-template-columns: 132px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--surface);
  padding: 14px;
}

.entry-thumb {
  border-radius: var(--radius-sm);
  overflow: hidden;
  background-color: var(--thumb-bg);
}

.entry-thumb img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

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

.entry-name {
  font-size: 1rem;
  margin-bottom: 6px;
}

.entry-meta {
  font-size: 0.84rem;
  color: var(--ink-faint);
  margin-bottom: 6px;
}

.entry-hint {
  font-size: 0.9rem;
  color: var(--ink-soft);
  margin: 0;
}

/* --------------------------------------------------------------------------
   pages：最近更新
   -------------------------------------------------------------------------- */

.update-month + .update-month {
  margin-top: 26px;
}

.month-title {
  font-size: 1rem;
  padding-bottom: 8px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

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

.rhythm-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--surface);
  padding: 18px;
}

.rhythm-title {
  font-size: 0.98rem;
  margin-bottom: 8px;
}

.rhythm-text {
  font-size: 0.9rem;
  color: var(--ink-soft);
  margin: 0;
}

.update-field-table {
  min-width: 560px;
}

.update-field-table .cell-name {
  font-family: var(--mono);
  font-size: 0.84rem;
  color: var(--ink);
  white-space: nowrap;
}

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

.related-card {
  border-top: 1px solid var(--line);
  padding-top: 14px;
}

.related-title {
  font-size: 0.96rem;
  margin-bottom: 8px;
}

.related-text {
  font-size: 0.88rem;
  color: var(--ink-soft);
  margin: 0;
}

/* --------------------------------------------------------------------------
   pages：阅读说明
   -------------------------------------------------------------------------- */

.page-header .meta-code {
  display: inline;
}

.step-item .step-no {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--accent);
  margin-bottom: 6px;
}

.step-item .step-body {
  min-width: 0;
}

.step-item .step-text {
  font-size: 0.92rem;
  color: var(--ink-soft);
  margin-bottom: 6px;
}

.boundary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}

.boundary-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--surface);
  padding: 18px;
}

.boundary-title {
  font-size: 1rem;
  margin-bottom: 8px;
}

.boundary-text {
  font-size: 0.92rem;
  color: var(--ink-soft);
  margin: 0;
}

.note-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.note-item {
  border-left: 2px solid var(--accent);
  padding: 4px 0 4px 16px;
}

.note-item .note-title {
  font-size: 0.98rem;
  margin-bottom: 6px;
}

.note-item .note-text {
  font-size: 0.92rem;
  color: var(--ink-soft);
  margin: 0;
}

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

.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--surface);
  padding: 0 18px;
}

.faq-question {
  display: flex;
  align-items: center;
  min-height: 52px;
  padding: 12px 0;
  font-size: 0.98rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}

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

.faq-question::after {
  content: "+";
  margin-left: auto;
  padding-left: 14px;
  font-family: var(--mono);
  font-size: 1rem;
  color: var(--ink-faint);
}

.faq-item[open] .faq-question::after {
  content: "−";
  color: var(--accent);
}

.faq-answer {
  padding: 0 0 16px;
  font-size: 0.92rem;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
  padding-top: 14px;
  margin: 0;
}

/* --------------------------------------------------------------------------
   pages：404
   -------------------------------------------------------------------------- */

.error-main {
  padding-top: 72px;
  padding-bottom: 96px;
}

.error-panel {
  max-width: 640px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--surface);
  padding: 40px 36px;
}

.error-code {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--ink-faint);
  margin-bottom: 12px;
}

.error-panel h1 {
  font-size: 1.7rem;
  margin-bottom: 14px;
}

.error-text {
  font-size: 0.95rem;
  color: var(--ink-soft);
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.error-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  color: var(--ink);
  background-color: transparent;
  transition: border-color 0.18s ease, color 0.18s ease;
}

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

/* 滚动出现动画：仅作增强，初始内容始终可见 */
@media (prefers-reduced-motion: no-preference) {
  .home-theme-table,
  .home-field-boundary,
  .home-recent-updates,
  .home-editor-picks,
  .home-page-index {
    animation: rise-in 0.5s ease-out both;
  }

  .home-field-boundary {
    animation-delay: 0.06s;
  }

  .home-recent-updates {
    animation-delay: 0.12s;
  }

  .home-editor-picks {
    animation-delay: 0.18s;
  }

  .home-page-index {
    animation-delay: 0.24s;
  }
}

@keyframes rise-in {
  from {
    transform: translateY(10px);
  }

  to {
    transform: translateY(0);
  }
}

/* --------------------------------------------------------------------------
   responsive：900px / 600px 断点
   -------------------------------------------------------------------------- */

@media (max-width: 900px) {
  .header-inner {
    flex-wrap: wrap;
    padding: 0 18px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    flex: 1 0 100%;
    margin-left: 0;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 6px 0 12px;
    border-top: 1px solid var(--line);
  }

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

  .nav-list > li {
    display: block;
  }

  .nav-link {
    width: 100%;
    justify-content: flex-start;
    padding: 0 4px;
    border-bottom: 1px solid var(--line);
  }

  .nav-link.is-current {
    border-bottom-color: var(--line);
    color: var(--accent);
  }

  .site-main {
    padding: 24px 18px 56px;
  }

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

  .page-content {
    max-width: 100%;
  }

  .page-aside,
  .page-toc {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background-color: var(--surface);
    padding: 16px 18px;
  }

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

  .content-media {
    grid-column: auto;
  }

  .field-boundary-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 22px;
  }

  .update-groups {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 22px;
  }

  .picks-grid {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  }

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

  .entry-links,
  .related-grid {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  }

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 26px;
    padding: 32px 18px 22px;
  }

  .footer-copy {
    padding: 0 18px 24px;
  }
}

@media (max-width: 600px) {
  body {
    font-size: 15.5px;
  }

  .site-main {
    padding: 20px 14px 48px;
  }

  .hero-title {
    font-size: 1.62rem;
  }

  .page-title {
    font-size: 1.42rem;
  }

  .section-head h2,
  .section-title {
    font-size: 1.16rem;
  }

  .hero-actions .btn {
    flex: 1 1 auto;
  }

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

  .field-brief-list dt {
    padding-top: 10px;
  }

  .field-brief-list dd {
    border-top: 0;
    padding-top: 0;
    padding-bottom: 6px;
  }

  .update-groups,
  .picks-grid,
  .index-grid,
  .entry-links,
  .related-grid,
  .advice-list,
  .rhythm-list,
  .boundary-grid,
  .note-grid {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .entry-thumb img {
    aspect-ratio: 16 / 9;
  }

  .footer-nav {
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
  }

  .error-main {
    padding-top: 48px;
    padding-bottom: 64px;
  }

  .error-panel {
    padding: 28px 20px;
  }

  .error-actions {
    flex-direction: column;
  }

  .error-btn {
    width: 100%;
  }

  .data-table {
    font-size: 0.88rem;
  }

  .data-table thead th,
  .data-table tbody th,
  .data-table tbody td {
    padding: 10px 12px;
  }
}