/* ==========================================================================
   swatchjs.com 全站样式
   分组：base / layout / components / pages / responsive
   ========================================================================== */

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

:root {
  --bg-page: #f6f8f9;
  --bg-panel: #ffffff;
  --bg-soft: #eef2f4;
  --ink-strong: #0f172a;
  --ink-body: #475569;
  --ink-muted: #64748b;
  --accent: #0f766e;
  --accent-soft: #14b8a6;
  --accent-wash: #e6f4f2;
  --line: #e2e8f0;
  --line-strong: #cbd5e1;
  --warn: #f59e0b;
  --radius: 6px;
  --radius-sm: 4px;
  --container: 1180px;
  --gap: 24px;
  --shadow-card: 0 1px 2px rgba(15, 23, 42, 0.05), 0 6px 18px rgba(15, 23, 42, 0.05);
  --shadow-hover: 0 6px 20px rgba(15, 23, 42, 0.1);
}

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

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

body {
  margin: 0;
  background-color: var(--bg-page);
  color: var(--ink-body);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  color: var(--ink-strong);
  font-weight: 600;
  line-height: 1.35;
}

p {
  margin: 0;
}

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

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

a:hover {
  color: var(--accent-soft);
}

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

figure {
  margin: 0;
}

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

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

:focus-visible {
  outline: 2px solid var(--accent-soft);
  outline-offset: 2px;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background-color: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(6px);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  max-width: var(--container);
  margin: 0 auto;
  padding: 12px 24px;
}

.brand {
  flex: 0 0 auto;
  color: var(--ink-strong);
  font-size: 18px;
  font-weight: 700;
  white-space: nowrap;
}

.brand:hover {
  color: var(--accent);
}

.site-nav {
  flex: 1 1 auto;
  min-width: 0;
}

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

.nav-link {
  display: block;
  padding: 7px 11px;
  border-radius: var(--radius-sm);
  color: var(--ink-body);
  font-size: 14px;
  white-space: nowrap;
}

.nav-link:hover {
  background-color: var(--accent-wash);
  color: var(--accent);
}

.nav-link.is-current {
  background-color: var(--accent-wash);
  color: var(--accent);
  font-weight: 600;
}

.header-actions {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 8px;
}

.header-action {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 6px 12px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  color: var(--ink-body);
  font-size: 13px;
  white-space: nowrap;
}

.header-action:hover {
  border-color: var(--accent-soft);
  color: var(--accent);
}

.header-action-primary {
  border-color: var(--accent);
  background-color: var(--accent);
  color: #ffffff;
}

.header-action-primary:hover {
  border-color: var(--accent-soft);
  background-color: var(--accent-soft);
  color: #ffffff;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 44px;
  height: 44px;
  padding: 0 10px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background-color: var(--bg-panel);
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--ink-strong);
}

.mobile-menu {
  display: none;
  border-top: 1px solid var(--line);
  background-color: var(--bg-panel);
}

.mobile-menu[hidden] {
  display: none;
}

.mobile-menu-list {
  max-width: var(--container);
  margin: 0 auto;
  padding: 8px 16px 14px;
}

.mobile-menu-link {
  display: block;
  min-height: 44px;
  padding: 11px 12px;
  border-radius: var(--radius-sm);
  color: var(--ink-body);
  font-size: 15px;
}

.mobile-menu-link:hover {
  background-color: var(--accent-wash);
  color: var(--accent);
}

.mobile-menu-link.is-active {
  background-color: var(--accent-wash);
  color: var(--accent);
  font-weight: 600;
}

.site-main {
  display: block;
}

.inner-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px 56px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding: 18px 0 0;
  color: var(--ink-muted);
  font-size: 13px;
}

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

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

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

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

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

.breadcrumb-item {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--ink-muted);
  font-size: 13px;
}

.breadcrumb-item + .breadcrumb-item::before {
  content: ">";
  color: var(--line-strong);
}

.page-header {
  padding: 14px 0 6px;
}

.page-title {
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 600;
  color: var(--ink-strong);
}

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

.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 36px 24px 24px;
}

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

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

.footer-title {
  margin-bottom: 10px;
  font-size: 15px;
  font-weight: 600;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-links a {
  color: var(--ink-body);
  font-size: 14px;
}

.footer-links a:hover {
  color: var(--accent);
}

.footer-bottom {
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.footer-brand {
  color: var(--ink-strong);
  font-size: 14px;
}

.footer-nav {
  margin-top: 10px;
}

.footer-nav-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
}

.footer-nav-list a {
  color: var(--ink-muted);
  font-size: 13px;
}

.footer-nav-list a:hover {
  color: var(--accent);
}

.footer-copy {
  margin-top: 12px;
  color: var(--ink-muted);
  font-size: 12px;
}

.back-to-top {
  position: fixed;
  right: 20px;
  bottom: 24px;
  z-index: 30;
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background-color: var(--bg-panel);
  color: var(--ink-strong);
  font-size: 12px;
  box-shadow: var(--shadow-card);
}

.back-to-top.is-visible {
  display: block;
}

.back-to-top:hover {
  border-color: var(--accent-soft);
  color: var(--accent);
}

/* --------------------------------------------------------------------------
   components：通用按钮、标签、区块标题、卡片、列表
   -------------------------------------------------------------------------- */

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

.section-head {
  margin-bottom: 18px;
}

.section-title,
.section-heading {
  font-size: 22px;
  font-weight: 600;
}

.section-sub,
.section-desc,
.section-intro,
.section-lead {
  margin-top: 6px;
  color: var(--ink-muted);
  font-size: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 9px 18px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 500;
}

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

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

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

.btn-ghost:hover {
  border-color: var(--accent-soft);
  color: var(--accent);
}

.text-link {
  display: inline-block;
  color: var(--accent);
  font-size: 14px;
  font-weight: 500;
}

.text-link::after {
  content: " →";
  font-size: 13px;
}

.text-link:hover {
  color: var(--accent-soft);
}

.chip {
  display: inline-block;
  padding: 5px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background-color: var(--bg-panel);
  color: var(--ink-body);
  font-size: 13px;
}

.chip:hover {
  border-color: var(--accent-soft);
  background-color: var(--accent-wash);
  color: var(--accent);
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chip-block {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-height: 44px;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-panel);
  color: var(--ink-body);
}

.chip-block:hover {
  border-color: var(--accent-soft);
  box-shadow: var(--shadow-card);
}

.chip-name {
  color: var(--ink-strong);
  font-size: 14px;
  font-weight: 600;
}

.chip-desc {
  color: var(--ink-muted);
  font-size: 12px;
}

.related-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  max-width: var(--container);
  margin: 0 auto;
  padding: 18px 24px 0;
}

.related-links-label {
  color: var(--ink-muted);
  font-size: 13px;
}

.related-links-item {
  padding: 5px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background-color: var(--bg-panel);
  color: var(--ink-body);
  font-size: 13px;
}

.related-links-item:hover {
  border-color: var(--accent-soft);
  color: var(--accent);
}

/* 页内快速入口条（内页通用） */
.page-title-section {
  padding: 6px 0 0;
}

.page-title-inner {
  max-width: var(--container);
  margin: 0 auto;
}

.page-lead {
  color: var(--ink-body);
  font-size: 15px;
}

.page-quick-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.page-quick-links a {
  display: inline-block;
  min-height: 36px;
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background-color: var(--bg-panel);
  color: var(--ink-body);
  font-size: 13px;
}

.page-quick-links a:hover {
  border-color: var(--accent-soft);
  color: var(--accent);
}

.page-summary {
  color: var(--ink-body);
  font-size: 15px;
}

/* 内页通用 section 间距 */
.page-section {
  padding: 34px 0;
}

.page-section.section-alt {
  background-color: var(--bg-soft);
}

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

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

.home-main {
  display: block;
}

/* 首屏 */
.hero {
  padding: 34px 0 40px;
  background-color: #ffffff;
  border-bottom: 1px solid var(--line);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 40px;
  align-items: center;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

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

.hero-eyebrow {
  margin-bottom: 10px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
}

.hero-title {
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 700;
}

.hero-lead {
  margin-top: 14px;
  color: var(--ink-body);
  font-size: 15px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

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

.hero-figure img {
  width: 100%;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  object-fit: cover;
}

.hero-figure figcaption {
  margin-top: 8px;
  color: var(--ink-muted);
  font-size: 12px;
}

/* 题材快速索引 */
.topic-chips {
  padding: 40px 0 8px;
}

/* 封面陈列 */
.cover-grid-section {
  padding: 40px 0 8px;
}

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

.cover-card {
  display: flex;
  flex-direction: column;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-panel);
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.cover-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent-soft);
  box-shadow: var(--shadow-hover);
}

.cover-figure {
  margin-bottom: 12px;
}

.cover-figure img {
  width: 100%;
  aspect-ratio: 3 / 4;
  border-radius: var(--radius-sm);
  object-fit: cover;
}

.cover-title {
  font-size: 17px;
}

.cover-topic {
  margin-top: 4px;
  color: var(--accent);
  font-size: 13px;
}

.cover-fields {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 2px 10px;
  margin: 10px 0 12px;
  font-size: 13px;
}

.cover-fields dt {
  color: var(--ink-muted);
}

.cover-fields dd {
  margin: 0;
  color: var(--ink-body);
}

.cover-link {
  margin-top: auto;
  color: var(--accent);
  font-size: 14px;
  font-weight: 500;
}

.cover-link::after {
  content: " →";
  font-size: 13px;
}

.cover-link:hover {
  color: var(--accent-soft);
}

/* 年度更新档案 */
.year-archive-section {
  padding: 40px 0 8px;
}

.archive-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: var(--gap);
  align-items: start;
}

.archive-index {
  position: sticky;
  top: 78px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-panel);
}

.archive-index-title {
  margin-bottom: 10px;
  font-size: 15px;
}

.archive-index-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.archive-index-link {
  display: block;
  min-height: 36px;
  padding: 7px 10px;
  border-radius: var(--radius-sm);
  color: var(--ink-body);
  font-size: 14px;
}

.archive-index-link:hover {
  background-color: var(--accent-wash);
  color: var(--accent);
}

.archive-content {
  min-width: 0;
}

.archive-year {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-panel);
}

.archive-year + .archive-year {
  margin-top: 16px;
}

.archive-year-title {
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
  font-size: 18px;
}

.month-group {
  padding: 12px 0;
}

.month-group + .month-group {
  border-top: 1px dashed var(--line);
}

.month-title,
.month-heading {
  margin-bottom: 8px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
}

.record-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.record-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background-color: var(--bg-page);
}

.record-name {
  color: var(--ink-strong);
  font-size: 14px;
  font-weight: 500;
}

.record-topic {
  color: var(--ink-muted);
  font-size: 13px;
}

.record-status {
  margin-left: auto;
  padding: 2px 9px;
  border-radius: 999px;
  background-color: var(--bg-soft);
  color: var(--ink-muted);
  font-size: 12px;
}

.record-status-new {
  background-color: #fef3c7;
  color: #92400e;
}

.archive-more {
  margin-top: 16px;
}

/* 追更榜单 */
.ranking-section {
  padding: 40px 0 8px;
}

.ranking-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-panel);
}

.ranking-table {
  min-width: 720px;
  font-size: 14px;
}

.ranking-caption {
  padding: 12px 14px;
  color: var(--ink-muted);
  font-size: 13px;
  text-align: left;
}

.ranking-table th,
.ranking-table td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: middle;
}

.ranking-table thead th {
  background-color: var(--bg-soft);
  color: var(--ink-strong);
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
}

.ranking-table tbody tr:last-child td {
  border-bottom: none;
}

.ranking-table tbody tr:hover {
  background-color: var(--accent-wash);
}

.rank-num {
  width: 52px;
  color: var(--ink-muted);
  font-weight: 600;
}

.rank-thumb {
  width: 44px;
  height: 58px;
  border-radius: var(--radius-sm);
  object-fit: cover;
}

.rank-name {
  color: var(--ink-strong);
  font-weight: 500;
}

.status-tag {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  background-color: var(--bg-soft);
  color: var(--ink-muted);
  font-size: 12px;
  white-space: nowrap;
}

.status-tag-done {
  background-color: #dcfce7;
  color: #166534;
}

/* 主题合辑入口 */
.collections-section {
  padding: 40px 0 8px;
}

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

.collection-card {
  display: flex;
  flex-direction: column;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-panel);
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.collection-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent-soft);
  box-shadow: var(--shadow-hover);
}

.collection-figure,
.collection-media {
  margin-bottom: 12px;
}

.collection-figure img,
.collection-media img {
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-sm);
  object-fit: cover;
}

.collection-title,
.collection-name {
  font-size: 17px;
}

.collection-reason {
  margin-top: 8px;
  color: var(--ink-body);
  font-size: 14px;
}

.collection-order {
  margin-top: 6px;
  color: var(--ink-muted);
  font-size: 13px;
}

.collection-link {
  margin-top: auto;
  padding-top: 12px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 500;
}

.collection-link::after {
  content: " →";
  font-size: 13px;
}

.collection-link:hover {
  color: var(--accent-soft);
}

.collections-more {
  margin-top: 16px;
}

/* 整理规则摘要 */
.reading-note-section {
  padding: 40px 0 48px;
}

.note-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gap);
}

.note-item {
  padding: 16px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent-soft);
  border-radius: var(--radius);
  background-color: var(--bg-panel);
  color: var(--ink-body);
  font-size: 14px;
}

.note-link {
  margin-top: 16px;
}

/* --------------------------------------------------------------------------
   pages：题材索引
   -------------------------------------------------------------------------- */

.topic-overview,
.topic-groups,
.topic-relations {
  padding: 30px 0 0;
}

.overview-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gap);
  margin-top: 16px;
}

.overview-card {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-panel);
}

.overview-card-title {
  margin-bottom: 8px;
  font-size: 16px;
}

.overview-card p {
  font-size: 14px;
}

.topic-group-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap);
  margin-top: 16px;
}

.topic-group-card {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  gap: 16px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-panel);
}

.topic-group-media img {
  width: 100%;
  aspect-ratio: 3 / 4;
  border-radius: var(--radius-sm);
  object-fit: cover;
}

.topic-group-body {
  min-width: 0;
}

.topic-group-name {
  font-size: 17px;
}

.topic-group-scope,
.topic-group-keywords,
.topic-group-sample {
  margin-top: 6px;
  font-size: 14px;
}

.topic-group-keywords {
  color: var(--ink-muted);
}

.topic-group-sample {
  color: var(--ink-body);
}

.topic-group-link {
  display: inline-block;
  margin-top: 10px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 500;
}

.topic-group-link::after {
  content: " →";
  font-size: 13px;
}

.topic-group-link:hover {
  color: var(--accent-soft);
}

.relation-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 16px;
}

.relation-item {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-panel);
}

.relation-topic {
  font-size: 16px;
}

.relation-reason {
  margin-top: 6px;
  font-size: 14px;
}

.relation-link {
  display: inline-block;
  margin-top: 8px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 500;
}

.relation-link::after {
  content: " →";
  font-size: 13px;
}

.relation-link:hover {
  color: var(--accent-soft);
}

.related-link-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gap);
  margin-top: 16px;
}

.related-link-item a {
  display: block;
  min-height: 44px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-panel);
  color: var(--ink-strong);
  font-size: 14px;
}

.related-link-item a:hover {
  border-color: var(--accent-soft);
  color: var(--accent);
}

/* --------------------------------------------------------------------------
   pages：年度档案
   -------------------------------------------------------------------------- */

.page-title .page-title-inner {
  max-width: var(--container);
}

.page-hero {
  margin-top: 16px;
}

.page-hero img {
  width: 100%;
  aspect-ratio: 21 / 9;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  object-fit: cover;
}

.page-hero figcaption {
  margin-top: 8px;
  color: var(--ink-muted);
  font-size: 12px;
}

.archive-layout {
  margin-top: 26px;
}

.archive-side {
  position: sticky;
  top: 78px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-panel);
}

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

.side-note {
  margin-bottom: 12px;
  color: var(--ink-muted);
  font-size: 13px;
}

.year-index {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.year-index-item {
  min-width: 0;
}

.year-link {
  display: block;
  min-height: 38px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  color: var(--ink-body);
  font-size: 14px;
}

.year-link:hover {
  background-color: var(--accent-wash);
  color: var(--accent);
}

.year-link.is-current {
  background-color: var(--accent-wash);
  color: var(--accent);
  font-weight: 600;
}

.side-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.side-link {
  color: var(--accent);
  font-size: 13px;
}

.side-link:hover {
  color: var(--accent-soft);
}

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

.month-groups .section-title,
.field-notes .section-title,
.archive-usage .section-title {
  margin-bottom: 6px;
}

.year-block {
  margin-top: 20px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-panel);
}

.year-heading {
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
  font-size: 18px;
}

.archive-body .record-item {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
}

.record-thumb {
  width: 48px;
  height: 62px;
  border-radius: var(--radius-sm);
  object-fit: cover;
}

.record-main {
  min-width: 0;
}

.field-notes {
  margin-top: 30px;
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gap);
  margin-top: 16px;
}

.field-card {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-panel);
}

.field-name {
  margin-bottom: 8px;
  font-size: 16px;
}

.field-desc {
  font-size: 14px;
}

.archive-usage {
  margin-top: 30px;
}

.usage-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 16px;
}

.usage-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-panel);
}

.usage-step {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--accent-wash);
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
}

.usage-text {
  min-width: 0;
  font-size: 14px;
}

.usage-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.usage-link {
  display: inline-block;
  min-height: 38px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background-color: var(--bg-panel);
  color: var(--ink-body);
  font-size: 13px;
}

.usage-link:hover {
  border-color: var(--accent-soft);
  color: var(--accent);
}

/* --------------------------------------------------------------------------
   pages：主题合辑
   -------------------------------------------------------------------------- */

.collection-intro,
.collection-cards,
.browse-order,
.related-topics,
.next-links {
  padding: 30px 0 0;
}

.intro-tips {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gap);
  margin-top: 14px;
}

.intro-tip {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-panel);
}

.tip-index {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background-color: var(--accent-wash);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
}

.tip-text {
  min-width: 0;
  font-size: 14px;
}

.collection-cards .collection-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 16px;
}

.collection-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}

.tag-item {
  padding: 2px 9px;
  border-radius: 999px;
  background-color: var(--accent-wash);
  color: var(--accent);
  font-size: 12px;
}

.browse-order .order-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gap);
  margin-top: 16px;
}

.order-step {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr);
  grid-template-rows: auto auto;
  gap: 4px 12px;
  align-items: start;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-panel);
}

.order-step .step-no {
  grid-row: 1 / span 2;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--accent-wash);
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
}

.order-step .step-title {
  grid-column: 2;
  font-size: 16px;
}

.order-step .step-text {
  grid-column: 2;
  min-width: 0;
  font-size: 14px;
}

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

.topic-tag-link {
  display: inline-block;
  min-height: 36px;
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background-color: var(--bg-panel);
  color: var(--ink-body);
  font-size: 13px;
}

.topic-tag-link:hover {
  border-color: var(--accent-soft);
  background-color: var(--accent-wash);
  color: var(--accent);
}

.next-link-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gap);
  margin-top: 16px;
}

.next-link {
  display: block;
  min-height: 44px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-panel);
  color: var(--ink-strong);
  font-size: 14px;
}

.next-link:hover {
  border-color: var(--accent-soft);
  color: var(--accent);
}

/* --------------------------------------------------------------------------
   pages：入门路径
   -------------------------------------------------------------------------- */

.path-steps,
.field-table,
.browse-paths,
.mobile-tips {
  padding: 30px 0 0;
}

.page-title-lead {
  max-width: var(--container);
  margin: 0 auto;
  color: var(--ink-body);
  font-size: 15px;
}

.path-steps-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gap);
  margin-top: 16px;
}

.path-step-card {
  display: flex;
  flex-direction: column;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-panel);
}

.path-step-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  margin-bottom: 10px;
  border-radius: 50%;
  background-color: var(--accent-wash);
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
}

.path-step-title {
  font-size: 17px;
}

.path-step-text {
  margin-top: 8px;
  font-size: 14px;
}

.path-step-link {
  margin-top: auto;
  padding-top: 12px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 500;
}

.path-step-link::after {
  content: " →";
  font-size: 13px;
}

.path-step-link:hover {
  color: var(--accent-soft);
}

.path-figure {
  max-width: var(--container);
  margin: 26px auto 0;
  padding: 0 24px;
}

.path-figure img {
  width: 100%;
  aspect-ratio: 21 / 9;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  object-fit: cover;
}

.path-figure-caption {
  margin-top: 8px;
  color: var(--ink-muted);
  font-size: 12px;
}

.field-table-grid {
  margin-top: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-panel);
  overflow: hidden;
}

.field-table-caption {
  padding: 12px 14px;
  color: var(--ink-muted);
  font-size: 13px;
  text-align: left;
}

.field-table-grid th,
.field-table-grid td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  font-size: 14px;
}

.field-table-grid thead th {
  background-color: var(--bg-soft);
  color: var(--ink-strong);
  font-size: 13px;
  font-weight: 600;
}

.field-table-grid tbody th {
  color: var(--ink-strong);
  font-weight: 600;
  white-space: nowrap;
}

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

.browse-path-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 16px;
}

.browse-path-item {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-panel);
}

.browse-path-title {
  font-size: 16px;
}

.browse-path-text {
  margin-top: 6px;
  font-size: 14px;
}

.browse-path-link {
  display: inline-block;
  margin-top: 8px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 500;
}

.browse-path-link::after {
  content: " →";
  font-size: 13px;
}

.browse-path-link:hover {
  color: var(--accent-soft);
}

.mobile-tip-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.mobile-tip-item {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent-soft);
  border-radius: var(--radius);
  background-color: var(--bg-panel);
  font-size: 14px;
}

/* --------------------------------------------------------------------------
   pages：问答
   -------------------------------------------------------------------------- */

.page-title-text {
  min-width: 0;
}

.page-title-figure {
  margin-top: 16px;
}

.page-title-figure img {
  width: 100%;
  aspect-ratio: 21 / 9;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  object-fit: cover;
}

.figure-caption {
  margin-top: 8px;
  color: var(--ink-muted);
  font-size: 12px;
}

.faq-groups {
  max-width: 900px;
  margin: 0 auto;
  padding: 30px 24px 0;
}

.faq-group + .faq-group {
  margin-top: 28px;
}

.faq-group-head {
  margin-bottom: 12px;
}

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

.faq-group-desc {
  margin-top: 4px;
  color: var(--ink-muted);
  font-size: 14px;
}

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

.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-panel);
}

.faq-question {
  position: relative;
  padding: 14px 44px 14px 16px;
  color: var(--ink-strong);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  list-style: none;
}

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

.faq-question::after {
  content: "+";
  position: absolute;
  top: 50%;
  right: 16px;
  transform: translateY(-50%);
  color: var(--accent);
  font-size: 18px;
  font-weight: 600;
}

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

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

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

.faq-answer p {
  margin-top: 12px;
}

.faq-groups + .related-links,
.related-links {
  padding-bottom: 40px;
}

.related-title {
  font-size: 20px;
}

.related-desc {
  margin-top: 4px;
  color: var(--ink-muted);
  font-size: 14px;
}

.related-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gap);
  margin-top: 14px;
}

.related-list a {
  display: block;
  min-height: 44px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-panel);
  color: var(--ink-strong);
  font-size: 14px;
}

.related-list a:hover {
  border-color: var(--accent-soft);
  color: var(--accent);
}

/* --------------------------------------------------------------------------
   pages：整理规则
   -------------------------------------------------------------------------- */

.page-title-block {
  padding: 14px 0 0;
}

.scope-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: var(--gap);
  margin-top: 16px;
}

.scope-text {
  min-width: 0;
}

.scope-text p + p {
  margin-top: 12px;
}

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

.scope-item {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-panel);
}

.scope-item-title {
  margin-bottom: 6px;
  font-size: 16px;
}

.scope-item p {
  font-size: 14px;
}

.rules-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap);
  margin-top: 16px;
}

.rules-column {
  min-width: 0;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-panel);
}

.rules-column-title {
  margin-bottom: 10px;
  font-size: 16px;
}

.rules-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.rules-item {
  padding-left: 16px;
  position: relative;
  font-size: 14px;
}

.rules-item::before {
  content: "";
  position: absolute;
  top: 11px;
  left: 2px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent-soft);
}

.rules-term {
  color: var(--ink-strong);
  font-weight: 600;
}

.rules-figure {
  margin-top: 20px;
}

.rules-figure img {
  width: 100%;
  aspect-ratio: 21 / 9;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  object-fit: cover;
}

.rules-figure figcaption {
  margin-top: 8px;
  color: var(--ink-muted);
  font-size: 12px;
}

.maintenance-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  gap: var(--gap);
  margin-top: 16px;
}

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

.maintenance-item {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-panel);
}

.maintenance-item-title {
  margin-bottom: 6px;
  font-size: 16px;
}

.maintenance-item p {
  font-size: 14px;
}

.maintenance-aside {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-panel);
}

.aside-title {
  margin-bottom: 8px;
  font-size: 16px;
}

.maintenance-aside p {
  font-size: 14px;
}

.maintenance-aside p + p {
  margin-top: 10px;
}

.feedback-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  gap: var(--gap);
  margin-top: 16px;
}

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

.feedback-item {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-panel);
}

.feedback-item-title {
  margin-bottom: 6px;
  font-size: 16px;
}

.feedback-item p {
  font-size: 14px;
}

.feedback-note {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-panel);
}

.feedback-note-title {
  margin-bottom: 8px;
  font-size: 16px;
}

.feedback-note p {
  font-size: 14px;
}

.feedback-note p + p {
  margin-top: 10px;
}

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

.error-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 48px 24px 64px;
}

.error-panel {
  padding: 32px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-panel);
  text-align: center;
}

.error-code {
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
}

.error-title {
  margin-top: 8px;
  font-size: clamp(24px, 4vw, 34px);
}

.error-desc {
  max-width: 620px;
  margin: 12px auto 0;
  font-size: 15px;
}

.error-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  margin-top: 20px;
  padding: 10px 22px;
  border-radius: var(--radius);
  background-color: var(--accent);
  color: #ffffff;
  font-size: 15px;
}

.error-action:hover {
  background-color: var(--accent-soft);
  color: #ffffff;
}

.error-paths {
  margin-top: 30px;
}

.error-paths-title {
  font-size: 18px;
}

.error-path-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--gap);
  margin-top: 14px;
}

.error-path-list a {
  display: block;
  min-height: 44px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-panel);
  color: var(--ink-strong);
  font-size: 14px;
}

.error-path-list a:hover {
  border-color: var(--accent-soft);
  color: var(--accent);
}

/* --------------------------------------------------------------------------
   responsive：1024 / 768 / 480
   -------------------------------------------------------------------------- */

@media (max-width: 1024px) {
  .nav-link {
    padding: 7px 8px;
    font-size: 13px;
  }

  .hero-inner {
    gap: 28px;
  }

  .topic-group-card {
    grid-template-columns: 130px minmax(0, 1fr);
  }
}

@media (max-width: 900px) {
  .header-action:not(.header-action-primary) {
    display: none;
  }

  .cover-grid,
  .collection-grid,
  .note-list,
  .overview-grid,
  .field-grid,
  .intro-tips,
  .related-link-list,
  .next-link-list,
  .related-list,
  .path-steps-grid,
  .browse-order .order-steps,
  .error-path-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 768px) {
  body {
    font-size: 15px;
  }

  .header-inner {
    flex-wrap: nowrap;
    gap: 10px;
    padding: 10px 16px;
  }

  .site-nav {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .mobile-menu:not([hidden]) {
    display: block;
  }

  .header-actions {
    margin-left: auto;
  }

  .header-action {
    padding: 6px 10px;
    font-size: 12px;
  }

  .inner-main,
  .section-inner,
  .page-container,
  .error-main,
  .footer-inner {
    padding-left: 16px;
    padding-right: 16px;
  }

  .hero {
    padding: 24px 0 28px;
  }

  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 22px;
    padding: 0 16px;
  }

  .hero-figure img {
    aspect-ratio: 16 / 9;
  }

  .cover-grid,
  .collection-grid,
  .collection-cards .collection-grid,
  .note-list,
  .overview-grid,
  .field-grid,
  .intro-tips,
  .related-link-list,
  .next-link-list,
  .related-list,
  .path-steps-grid,
  .browse-order .order-steps,
  .error-path-list,
  .mobile-tip-list,
  .footer-columns {
    grid-template-columns: minmax(0, 1fr);
  }

  .topic-group-grid,
  .rules-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .archive-layout,
  .page-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .archive-index,
  .archive-side {
    position: static;
  }

  .archive-index-list,
  .year-index {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 8px;
  }

  .archive-index-link,
  .year-link {
    min-height: 38px;
    padding: 8px 12px;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
  }

  .scope-layout,
  .maintenance-layout,
  .feedback-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .topic-group-card {
    grid-template-columns: 110px minmax(0, 1fr);
    gap: 12px;
  }

  .faq-groups {
    padding-left: 16px;
    padding-right: 16px;
  }

  .path-figure {
    padding: 0 16px;
  }

  .related-links {
    padding-left: 16px;
    padding-right: 16px;
  }

  .archive-body .record-item {
    grid-template-columns: 44px minmax(0, 1fr);
    grid-template-rows: auto auto;
  }

  .archive-body .record-status {
    grid-column: 2;
    margin-left: 0;
    justify-self: start;
  }
}

@media (max-width: 480px) {
  .page-title {
    font-size: 26px;
  }

  .section-title,
  .section-heading {
    font-size: 20px;
  }

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

  .hero-actions .btn {
    flex: 1 1 160px;
  }

  .topic-group-card {
    grid-template-columns: minmax(0, 1fr);
  }

  .topic-group-media img {
    aspect-ratio: 16 / 9;
  }

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

  .order-step {
    grid-template-columns: 32px minmax(0, 1fr);
  }

  .usage-item {
    grid-template-columns: 32px minmax(0, 1fr);
  }

  .back-to-top {
    right: 12px;
    bottom: 16px;
  }
}