/* ============================================================
   components.css — 三页共用组件（导航、按钮、卡片、表格、FAQ、内页）
   只放跨页复用的组件；首页专属版式在 style.css。
   ============================================================ */

/* ---------------------------------------------------------- 基础容器 */
.wrap {
  width: min(var(--wrap), 100% - 48px);
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: -64px;
  z-index: 100;
  padding: 10px 16px;
  background: var(--ink);
  color: var(--bg);
  border-radius: var(--r-1);
  font-size: var(--fs-2);
  transition: top 0.18s ease;
}
.skip-link:focus-visible {
  top: 16px;
}

/* ---------------------------------------------------------- 站点导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  background: rgba(251, 249, 243, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: saturate(140%) blur(10px);
}
.site-header.is-scrolled {
  box-shadow: 0 8px 24px -20px rgba(30, 43, 35, 0.5);
}
.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
  flex: none;
}
.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--surface);
  color: var(--sage);
}
.brand-mark svg {
  width: 20px;
  height: 20px;
}
.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}
.brand-name {
  font-family: var(--font-serif);
  font-size: 21px;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.brand-tag {
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.14em;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 22px;
  margin-left: auto;
}
.main-nav ul {
  display: flex;
  align-items: center;
  gap: 20px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.main-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: var(--fs-1);
  letter-spacing: 0.02em;
  padding: 6px 0;
  border-bottom: 1px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.main-nav a:hover,
.main-nav a:focus-visible,
.main-nav a[aria-current="page"] {
  color: var(--accent);
  border-bottom-color: var(--accent);
}
.nav-cta {
  flex: none;
  padding: 9px 18px;
  border-radius: var(--r-3);
  background: var(--ink);
  color: var(--bg) !important;
  font-size: var(--fs-1);
  border-bottom: 0 !important;
}
.nav-cta:hover,
.nav-cta:focus-visible {
  background: var(--accent);
  color: #fff !important;
}
.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  height: 40px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-3);
  background: var(--surface);
  color: var(--ink);
  font-size: var(--fs-1);
  cursor: pointer;
}
.nav-toggle-bar,
.nav-toggle-bar::before,
.nav-toggle-bar::after {
  display: block;
  width: 16px;
  height: 1.5px;
  background: var(--ink);
  content: "";
  position: relative;
}
.nav-toggle-bar::before {
  position: absolute;
  top: -5px;
}
.nav-toggle-bar::after {
  position: absolute;
  top: 5px;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar {
  background: transparent;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::before {
  top: 0;
  transform: rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::after {
  top: 0;
  transform: rotate(-45deg);
}

/* ---------------------------------------------------------- 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 24px;
  border-radius: var(--r-3);
  border: 1px solid transparent;
  font-family: var(--font-sans);
  font-size: var(--fs-2);
  text-decoration: none;
  cursor: pointer;
  transition: background 0.16s ease, color 0.16s ease, border-color 0.16s ease, transform 0.16s ease;
}
.btn-primary {
  background: var(--accent);
  color: #fffdf8;
}
.btn-primary:hover,
.btn-primary:focus-visible {
  background: #a45735;
  transform: translateY(-1px);
}
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}
.btn-ghost:hover,
.btn-ghost:focus-visible {
  border-color: var(--sage);
  color: var(--sage);
}
.btn-arrow::after {
  content: "→";
  font-family: var(--font-sans);
}

/* ---------------------------------------------------------- 标签 / 图注 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: var(--r-3);
  background: var(--sage-soft);
  color: #3f5a3c;
  font-size: 12px;
  letter-spacing: 0.04em;
  align-self: flex-start;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}
.eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: currentColor;
}
.figcaption,
.caption {
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------------------------------------------------------- 栏目头 */
.section-head {
  max-width: 760px;
  margin-bottom: 40px;
}
.section-head h2 {
  margin: 10px 0 0;
  font-size: var(--fs-6);
  line-height: 1.25;
}
.section-lead {
  margin: 14px 0 0;
  font-size: var(--fs-3);
  line-height: 1.85;
  color: var(--ink-soft);
}

/* ---------------------------------------------------------- 图片卡 */
.card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-2);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.card:hover,
.card:focus-visible {
  transform: translateY(-3px);
  box-shadow: var(--shadow-2);
  border-color: var(--sage);
}
.card-link {
  display: flex;
  flex-direction: column;
  height: 100%;
  color: inherit;
  text-decoration: none;
}
.card-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}
.card-media {
  display: block;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--surface-2);
}
.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}
.card:hover .card-media img {
  transform: scale(1.03);
}
.card-body {
  padding: 20px 22px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.card-title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 19px;
  line-height: 1.5;
  font-weight: 600;
}
.card-summary {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}
.card-more {
  margin-top: auto;
  padding-top: 6px;
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 0.04em;
}

/* ---------------------------------------------------------- 表格 */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--r-2);
  background: var(--surface);
}
.data-table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  font-size: 14px;
}
.data-table th,
.data-table td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid var(--line-soft);
  vertical-align: top;
}
.data-table thead th {
  background: var(--ink);
  color: var(--bg);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  font-weight: 500;
  white-space: nowrap;
}
.data-table tbody th {
  font-family: var(--font-serif);
  font-size: 16px;
  color: var(--ink);
  white-space: nowrap;
}
.data-table tbody tr:last-child th,
.data-table tbody tr:last-child td {
  border-bottom: 0;
}
.data-table tbody tr:nth-child(even) {
  background: var(--surface-2);
}

/* ---------------------------------------------------------- FAQ */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--line);
}
.faq-item {
  border-bottom: 1px solid var(--line);
}
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 4px;
  cursor: pointer;
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--ink);
  list-style: none;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::after {
  content: "+";
  font-family: var(--font-sans);
  font-size: 22px;
  line-height: 1;
  color: var(--accent);
  transition: transform 0.18s ease;
}
.faq-item[open] summary::after {
  transform: rotate(45deg);
}
.faq-item summary:hover {
  color: var(--accent);
}
.faq-answer {
  padding: 0 4px 24px;
  max-width: 820px;
  font-size: var(--fs-2);
  line-height: 1.9;
  color: var(--ink-soft);
}

/* ---------------------------------------------------------- 页脚 */
.site-footer {
  margin-top: var(--pad-section);
  background: var(--ink);
  color: #e8e4d7;
  padding: 72px 0 32px;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr auto;
  gap: 48px;
  align-items: start;
}
.footer-name {
  font-family: var(--font-serif);
  font-size: 24px;
}
.footer-desc {
  margin: 14px 0 0;
  max-width: 420px;
  font-size: 14px;
  line-height: 1.8;
  color: #b9c0b4;
}
.footer-title {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: #9ba79a;
}
.footer-index ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 28px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.footer-index a {
  color: #e8e4d7;
  text-decoration: none;
  font-size: 14px;
}
.footer-index a:hover,
.footer-index a:focus-visible {
  color: #fff;
  text-decoration: underline;
}
.to-top {
  justify-self: end;
  padding: 9px 18px;
  border: 1px solid #4a5a4e;
  border-radius: var(--r-3);
  color: #e8e4d7;
  font-size: 13px;
  text-decoration: none;
  white-space: nowrap;
}
.to-top:hover,
.to-top:focus-visible {
  border-color: var(--accent-soft);
  color: #fff;
}
.footer-legal {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  margin-top: 56px;
  padding-top: 24px;
  border-top: 1px solid #33443a;
  font-size: 12px;
  line-height: 1.7;
  color: #9ba79a;
}
.footer-legal p {
  margin: 0;
}
.footer-legal p:first-child {
  max-width: 720px;
}

/* ---------------------------------------------------------- 面包屑 */
.crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
}
.crumb a {
  color: var(--ink-soft);
  text-decoration: none;
}
.crumb a:hover,
.crumb a:focus-visible {
  color: var(--accent);
  text-decoration: underline;
}
.crumb span[aria-current] {
  color: var(--ink);
}
.crumb > * + *::before {
  content: "/";
  margin-right: 8px;
  color: var(--line);
}

/* ---------------------------------------------------------- 筛选条 */
.filter-bar {
  position: sticky;
  top: var(--header-h);
  z-index: 20;
  background: rgba(251, 249, 243, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
  padding: 16px 0;
}
.filter-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.chip-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  scrollbar-width: thin;
  padding-bottom: 2px;
}
.chip {
  flex: none;
  padding: 7px 15px;
  border: 1px solid var(--line);
  border-radius: var(--r-3);
  background: var(--surface);
  color: var(--ink-soft);
  font-size: 13px;
  cursor: pointer;
  white-space: nowrap;
  transition: border-color 0.15s ease, background 0.15s ease, color 0.15s ease;
}
.chip:hover,
.chip:focus-visible {
  border-color: var(--sage);
  color: var(--sage);
}
.chip[aria-pressed="true"] {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--bg);
}
.filter-tools {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
}
.filter-tools select,
.filter-tools input {
  height: 38px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: var(--r-1);
  background: var(--surface);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 13px;
}
.filter-tools input {
  width: 190px;
}
.filter-tools select:focus-visible,
.filter-tools input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}
.result-count {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
}

/* ---------------------------------------------------------- 列表网格 */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}
.empty-state {
  padding: 64px 24px;
  border: 1px dashed var(--line);
  border-radius: var(--r-2);
  text-align: center;
  color: var(--ink-soft);
}
.empty-state strong {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-serif);
  font-size: 20px;
}

/* ---------------------------------------------------------- 长文 */
.article {
  max-width: 760px;
  font-size: var(--fs-3);
  line-height: 1.95;
  color: var(--ink-soft);
}
.article h2 {
  margin: 56px 0 18px;
  font-size: clamp(24px, 2.4vw, 30px);
  line-height: 1.35;
  color: var(--ink);
  scroll-margin-top: calc(var(--header-h) + 24px);
}
.article h2 .num {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--accent);
  font-weight: 400;
}
.article p {
  margin: 0 0 18px;
}
.article strong {
  color: var(--ink);
}

/* ---------------------------------------------------------- 目录 */
.toc {
  position: sticky;
  top: calc(var(--header-h) + 28px);
  border: 1px solid var(--line);
  border-radius: var(--r-2);
  background: var(--surface);
  padding: 22px;
}
.toc-title {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
}
.toc ol {
  margin: 0;
  padding: 0;
  list-style: none;
}
.toc a {
  display: flex;
  gap: 10px;
  padding: 8px 0;
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 13.5px;
  line-height: 1.5;
  border-left: 2px solid transparent;
  padding-left: 10px;
  margin-left: -12px;
}
.toc a:hover,
.toc a:focus-visible,
.toc a[aria-current="true"] {
  color: var(--accent);
  border-left-color: var(--accent);
}

/* ---------------------------------------------------------- 详情页相关 */
.related {
  margin-top: 72px;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 24px;
}
.related-card {
  display: block;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--r-2);
  background: var(--surface);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.16s ease, transform 0.16s ease;
}
.related-card:hover,
.related-card:focus-visible {
  border-color: var(--sage);
  transform: translateY(-2px);
}
.related-card strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 19px;
  margin-bottom: 8px;
}
.related-card span {
  font-size: 13px;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* ---------------------------------------------------------- 响应式 */
@media (max-width: 1180px) {
  .main-nav {
    gap: 16px;
  }
  .main-nav ul {
    gap: 14px;
  }
  .main-nav a {
    font-size: 12.5px;
  }
}
@media (max-width: 1080px) {
  .nav-toggle {
    display: inline-flex;
  }
  .main-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: var(--header-h);
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 16px 24px 24px;
    background: var(--surface);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-2);
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
  }
  .main-nav.is-open {
    display: flex;
  }
  .main-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .main-nav li {
    border-bottom: 1px solid var(--line-soft);
  }
  .main-nav ul a {
    display: block;
    padding: 13px 2px;
    font-size: 15px;
  }
  .nav-cta {
    margin-top: 12px;
    text-align: center;
  }
  .card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .related-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 760px) {
  :root {
    --pad-section: 56px;
  }
  .wrap {
    width: calc(100% - 32px);
  }
  .brand-tag {
    display: none;
  }
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .to-top {
    justify-self: start;
  }
  .footer-legal {
    flex-direction: column;
    gap: 8px;
  }
  .card-grid,
  .related-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .filter-inner {
    gap: 10px;
  }
  .filter-tools {
    width: 100%;
    margin-left: 0;
  }
  .chip-row {
    flex-wrap: nowrap;
    overflow-x: auto;
  }
  .filter-tools input {
    width: 100%;
  }
  .filter-tools select {
    flex: none;
  }
  .data-table th,
  .data-table td {
    padding: 12px 14px;
  }
  .section-head {
    margin-bottom: 28px;
  }
}


/* ============================================================
   内页版式（原 inner.css，合并进共享样式以保持三页样式表一致）
   ============================================================ */
.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------------------------------------------------------- 内页页头 */
.page-hero {
  padding: 56px 0 44px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(900px 320px at 82% -20%, rgba(223, 231, 217, 0.6), transparent 65%),
    var(--bg);
}
.page-hero h1 {
  margin: 22px 0 0;
  font-size: clamp(32px, 3.6vw, 46px);
  line-height: 1.25;
}
.page-lead {
  margin: 18px 0 0;
  max-width: 760px;
  font-size: var(--fs-3);
  line-height: 1.9;
  color: var(--ink-soft);
}

/* ---------------------------------------------------------- 列表 */
.list-section {
  padding: 40px 0 var(--pad-section);
}
.list-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 26px;
}
.list-head h2 {
  margin: 0;
  font-size: 22px;
}
.list-status {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--muted);
}
.empty-state {
  margin-bottom: 28px;
}
.empty-state p {
  margin: 0 0 18px;
  font-size: 15px;
}
.list-description {
  padding: var(--pad-section) 0;
  border-top: 1px solid var(--line);
  background: var(--bg-2);
}
.list-desc-inner {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 48px;
  align-items: start;
}
.list-desc-inner h2 {
  margin: 0;
  font-size: 26px;
  line-height: 1.4;
}
.list-desc-inner p {
  margin: 0;
  font-size: 15px;
  line-height: 1.95;
  color: var(--ink-soft);
}

/* ---------------------------------------------------------- 详情页头 */
.article-head {
  padding: 52px 0 40px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(900px 320px at 80% -30%, rgba(223, 231, 217, 0.55), transparent 65%),
    var(--bg);
}
.article-head h1 {
  margin: 22px 0 0;
  max-width: 900px;
  font-size: clamp(32px, 3.8vw, 48px);
  line-height: 1.24;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 20px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--muted);
}

/* ---------------------------------------------------------- 详情布局 */
.detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 64px;
  align-items: start;
  padding-top: 48px;
}
.article {
  grid-column: 1;
  min-width: 0;
}
.toc-col {
  grid-column: 2;
  grid-row: 1;
}
.article-table {
  margin: 32px 0 8px;
}
.article-table .data-table {
  min-width: 560px;
  font-size: 13.5px;
}
.article-table .data-table caption {
  caption-side: top;
  text-align: left;
  padding: 12px 16px;
  font-size: 12px;
  color: var(--muted);
  border-bottom: 1px solid var(--line-soft);
}
.article-table .data-table th,
.article-table .data-table td {
  padding: 12px 16px;
}

/* 目录：桌面展开，移动端由 inner.js 收起为 details */
.toc {
  padding: 18px 20px;
}
.toc-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted);
  cursor: pointer;
  list-style: none;
}
.toc-title::after {
  content: "展开";
  font-family: var(--font-sans);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--accent);
}
.toc[open] .toc-title::after {
  content: "收起";
}
.toc-title::-webkit-details-marker {
  display: none;
}
.toc ol {
  margin-top: 8px;
}
.toc a {
  align-items: baseline;
}
.toc-num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
}
.toc a[aria-current="true"] .toc-num {
  color: var(--accent);
}

/* ---------------------------------------------------------- 详情 FAQ */
.detail-faq {
  padding: var(--pad-section) 0;
  margin-top: var(--pad-section);
  background: var(--bg-2);
  border-block: 1px solid var(--line);
}
.detail-faq .faq-list {
  max-width: 820px;
}

/* ---------------------------------------------------------- 相关阅读 */
.related-section {
  padding: var(--pad-section) 0 0;
}

/* ---------------------------------------------------------- 响应式 */
@media (max-width: 1080px) {
  .detail-layout {
    grid-template-columns: minmax(0, 1fr) 240px;
    gap: 40px;
  }
  .list-desc-inner {
    grid-template-columns: 1fr;
    gap: 18px;
  }
}
@media (max-width: 900px) {
  .detail-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
    padding-top: 32px;
  }
  .article {
    grid-column: 1;
    grid-row: 2;
  }
  .toc-col {
    grid-column: 1;
    grid-row: 1;
  }
  .toc {
    position: static;
  }
  .toc ol {
    columns: 2;
    column-gap: 24px;
  }
}
@media (max-width: 760px) {
  .page-hero,
  .article-head {
    padding: 36px 0 28px;
  }
  .page-lead {
    font-size: 15px;
  }
  .article-head h1 {
    font-size: 30px;
  }
  .article {
    font-size: 16px;
  }
  .article h2 {
    margin-top: 44px;
  }
  .list-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
  .toc ol {
    columns: 1;
  }
  .article-table .data-table {
    min-width: 480px;
  }
}

/* ============================================================
   theme1631 交付补充：分类多时的「更多」菜单、服务端分页、
   上下篇、正文配图与搜索表单
   ============================================================ */
.nav-more {
  position: relative;
  flex: none;
}
.nav-more > summary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 0;
  border-bottom: 1px solid transparent;
  color: var(--ink-soft);
  font-size: var(--fs-1);
  letter-spacing: 0.02em;
  cursor: pointer;
  list-style: none;
}
.nav-more > summary::-webkit-details-marker {
  display: none;
}
.nav-more > summary::after {
  content: "▾";
  font-size: 10px;
  color: var(--muted);
}
.nav-more[open] > summary,
.nav-more > summary:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}
.nav-more-panel {
  position: absolute;
  right: 0;
  top: calc(100% + 10px);
  z-index: 60;
  min-width: 230px;
  padding: 8px;
  display: grid;
  gap: 2px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-1);
  box-shadow: var(--shadow-2);
}
.main-nav .nav-more-panel a {
  display: block;
  padding: 8px 10px;
  border-bottom: 0;
  border-radius: var(--r-1);
  font-size: 13px;
  white-space: nowrap;
}
.main-nav .nav-more-panel a:hover,
.main-nav .nav-more-panel a:focus-visible {
  background: var(--surface-2);
  border-bottom: 0;
}

.pagination {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 36px;
}
.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 38px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: var(--r-1);
  background: var(--surface);
  color: var(--ink-soft);
  font-size: 13px;
  text-decoration: none;
}
.pagination a:hover,
.pagination a:focus-visible {
  border-color: var(--sage);
  color: var(--sage);
}
.pagination .current {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--bg);
}

.article-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 56px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}
.article-nav-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-1);
  background: var(--surface);
  color: inherit;
  text-decoration: none;
}
.article-nav-item:hover,
.article-nav-item:focus-visible {
  border-color: var(--sage);
}
.article-nav-item span {
  font-size: 12px;
  color: var(--muted);
}
.article-nav-item strong {
  font-family: var(--font-serif);
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink);
}
.article-nav-next {
  text-align: right;
}

.article-figure {
  margin: 26px 0 8px;
}
.article-figure img {
  display: block;
  width: 100%;
  max-width: 760px;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--r-2);
  background: var(--surface-2);
}

.search-form {
  display: flex;
  flex: 1;
  gap: 10px;
  max-width: 560px;
}
.search-form input {
  flex: 1;
  height: 40px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-1);
  background: var(--surface);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 14px;
}
.search-form input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

@media (max-width: 1080px) {
  .nav-more {
    width: 100%;
    border-bottom: 1px solid var(--line-soft);
  }
  .nav-more > summary {
    display: block;
    padding: 13px 2px;
    font-size: 15px;
  }
  .nav-more-panel {
    position: static;
    min-width: 0;
    padding: 0 0 8px 14px;
    border: 0;
    border-radius: 0;
    box-shadow: none;
    background: transparent;
  }
  .main-nav .nav-more-panel a {
    padding: 10px 2px;
    border-radius: 0;
    font-size: 14px;
  }
  .search-form {
    max-width: none;
  }
}
@media (max-width: 760px) {
  .article-nav {
    grid-template-columns: 1fr;
  }
  .article-nav-next {
    text-align: left;
  }
}

/* 12 个真实分类的筛选条：桌面压成一行，移动端仍横向滚动 */
.chip-row {
  gap: 6px;
}
.chip {
  padding: 7px 12px;
}