/* ==========================================================================
   BASE — 全站基础样式
   ========================================================================== */
:root {
  --color-text: #1a1a1a;
  --color-text-secondary: #4a4a4a;
  --color-bg: #f7f5f2;
  --color-card: #ffffff;
  --color-accent: #8c5a6b;
  --color-border: #e3dfd8;
  --color-highlight: #d9a441;
  --color-text-light: #8a8a8a;
  --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  --container-width: 1200px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --transition-base: 0.25s ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover {
  color: var(--color-text);
}

ul,
ol {
  list-style: none;
}

/* ==========================================================================
   LAYOUT — 全站布局骨架
   ========================================================================== */

/* 站点容器 */
.site-home,
.site-inner,
.site-error {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-main {
  flex: 1 0 auto;
}

/* 统一内容宽度 */
.header-inner,
.footer-inner,
.home-main > section,
.inner-main {
  width: 100%;
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ==========================================================================
   COMPONENTS — 页头导航
   ========================================================================== */

.site-header {
  background-color: var(--color-card);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-shrink: 0;
}

.brand-name {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.02em;
}

.brand-tagline {
  font-size: 13px;
  color: var(--color-text-light);
  white-space: nowrap;
}

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

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

.nav-item {
  position: relative;
}

.nav-link {
  display: block;
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  position: relative;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--color-text);
  background-color: rgba(140, 90, 107, 0.06);
}

.nav-item.is-current > .nav-link {
  color: var(--color-text);
  font-weight: 600;
}

.nav-item.is-current > .nav-link::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  background-color: var(--color-accent);
  border-radius: 2px;
}

/* 下拉面板 */
.has-dropdown .dropdown-panel {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 320px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 24px rgba(26, 26, 26, 0.08);
  padding: 16px;
  display: none;
  z-index: 200;
}

.has-dropdown:hover .dropdown-panel,
.has-dropdown:focus-within .dropdown-panel {
  display: block;
}

.dropdown-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.dropdown-panel-single {
  grid-template-columns: 1fr;
}

.dropdown-col {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.dropdown-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-light);
  margin-bottom: 4px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--color-border);
}

.dropdown-links {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.dropdown-links a {
  font-size: 14px;
  color: var(--color-text-secondary);
  padding: 4px 6px;
  border-radius: var(--radius-sm);
}

.dropdown-links a:hover {
  color: var(--color-text);
  background-color: rgba(140, 90, 107, 0.06);
}

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
}

.nav-toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

/* ==========================================================================
   COMPONENTS — 面包屑 / 页面标题区
   ========================================================================== */

.breadcrumb {
  padding-top: 18px;
  font-size: 14px;
  color: var(--color-text-light);
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--color-text-light);
}

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

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

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

.page-header {
  padding: 20px 0 28px;
}

.page-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
}

.page-description {
  font-size: 16px;
  color: var(--color-text-secondary);
  margin-top: 8px;
  max-width: 760px;
}

/* ==========================================================================
   COMPONENTS — 通用区块与标题
   ========================================================================== */

.section-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: 8px;
}

.section-desc {
  font-size: 15px;
  color: var(--color-text-secondary);
  margin-bottom: 20px;
  max-width: 720px;
}

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}

.section-head .section-title {
  margin-bottom: 0;
}

.section-more {
  font-size: 14px;
  color: var(--color-accent);
  white-space: nowrap;
  padding: 4px 0;
}

.section-more:hover {
  color: var(--color-text);
}

.section-note {
  font-size: 13px;
  color: var(--color-text-light);
}

/* ==========================================================================
   COMPONENTS — 标签与状态
   ========================================================================== */

.tag,
.tag-label,
.status-label {
  display: inline-block;
  font-size: 12px;
  line-height: 1.4;
  padding: 2px 8px;
  border-radius: 20px;
  background-color: rgba(140, 90, 107, 0.08);
  color: var(--color-accent);
  white-space: nowrap;
}

.status,
.status-lianzai,
.status-wanjie,
.status-danxingben {
  display: inline-block;
  font-size: 12px;
  line-height: 1.4;
  padding: 2px 8px;
  border-radius: 20px;
  white-space: nowrap;
}

.status-lianzai {
  background-color: rgba(217, 164, 65, 0.12);
  color: #9a7418;
}

.status-wanjie {
  background-color: rgba(74, 74, 74, 0.08);
  color: var(--color-text-secondary);
}

.status-danxingben {
  background-color: rgba(140, 90, 107, 0.08);
  color: var(--color-accent);
}

.tag-link {
  display: inline-block;
  font-size: 14px;
  padding: 6px 14px;
  border-radius: 20px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: border-color var(--transition-base), color var(--transition-base), background-color var(--transition-base);
}

.tag-link:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background-color: rgba(140, 90, 107, 0.04);
}

/* ==========================================================================
   COMPONENTS — 卡片通用
   ========================================================================== */

/* 封面卡（目录页） */
.cover-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 20px;
}

.cover-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.cover-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(26, 26, 26, 0.08);
}

.cover-card a {
  display: block;
}

.cover-image {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
}

.cover-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  padding: 12px 12px 4px;
  line-height: 1.4;
}

.cover-meta {
  display: flex;
  gap: 6px;
  padding: 0 12px 12px;
  flex-wrap: wrap;
}

/* ==========================================================================
   COMPONENTS — 页脚
   ========================================================================== */

.site-footer {
  background-color: var(--color-card);
  border-top: 1px solid var(--color-border);
  margin-top: 60px;
}

.footer-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  padding-top: 40px;
  padding-bottom: 32px;
}

.footer-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 10px;
}

.footer-text {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

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

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

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

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.footer-bottom .copyright {
  font-size: 13px;
  color: var(--color-text-light);
}

.back-to-top {
  font-size: 13px;
  color: var(--color-text-light);
  padding: 4px 0;
}

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

/* ==========================================================================
   COMPONENTS — FAQ
   ========================================================================== */

.faq-item {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 10px;
  overflow: hidden;
}

.faq-item summary {
  padding: 14px 18px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: background-color var(--transition-base);
}

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

.faq-item summary::before {
  content: "";
  width: 6px;
  height: 6px;
  border-right: 2px solid var(--color-accent);
  border-bottom: 2px solid var(--color-accent);
  transform: rotate(-45deg);
  transition: transform var(--transition-base);
  flex-shrink: 0;
  margin-right: 4px;
}

.faq-item[open] summary::before {
  transform: rotate(45deg);
}

.faq-item summary:hover {
  background-color: rgba(140, 90, 107, 0.04);
}

.faq-item .faq-answer,
.faq-item p {
  padding: 0 18px 14px;
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.faq-item .faq-answer a,
.faq-item p a {
  color: var(--color-accent);
  text-decoration: underline;
}

/* ==========================================================================
   COMPONENTS — 步骤条
   ========================================================================== */

.steps-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 24px;
}

.step-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  position: relative;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--color-accent);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 12px;
}

.step-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}

.step-text {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ==========================================================================
   COMPONENTS — 表格
   ========================================================================== */

.table-wrap {
  overflow-x: auto;
  margin-bottom: 16px;
}

.help-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  background-color: var(--color-card);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.help-table th,
.help-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.help-table th {
  background-color: rgba(140, 90, 107, 0.06);
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
}

.help-table td {
  color: var(--color-text-secondary);
}

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

/* ==========================================================================
   COMPONENTS — 相关入口 / 相关链接
   ========================================================================== */

.related-entry,
.related-links {
  margin-top: 48px;
}

.entry-cards,
.related-link-grid,
.related-card-grid,
.related-grid,
.faq-more-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.entry-card,
.related-link-card,
.related-card,
.more-card {
  display: block;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.entry-card:hover,
.related-link-card:hover,
.related-card:hover,
.more-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(26, 26, 26, 0.06);
  border-color: var(--color-accent);
}

.entry-card-title,
.related-card-title,
.more-card-title,
.related-name {
  display: block;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}

.entry-card-text,
.related-card-desc,
.more-card-text,
.related-desc {
  display: block;
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   PAGES — 首页
   ========================================================================== */

/* 首屏 hero */
.hero-section {
  background-color: var(--color-card);
  border-bottom: 1px solid var(--color-border);
  padding: 48px 0;
}

.hero-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: start;
}

.hero-left {
  padding-right: 16px;
}

.hero-title {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
  margin-bottom: 12px;
}

.hero-desc {
  font-size: 16px;
  color: var(--color-text-secondary);
  margin-bottom: 28px;
  max-width: 520px;
}

.hero-steps .hero-sub-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 14px;
}

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

.step-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 16px;
  background-color: var(--color-bg);
  border-radius: var(--radius-md);
}

.step-num {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-color: var(--color-accent);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
}

.step-content {
  flex: 1;
}

.step-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 2px;
}

.step-item .step-text {
  font-size: 13px;
  color: var(--color-text-secondary);
}

.hero-right {
  padding: 24px;
  background-color: var(--color-bg);
  border-radius: var(--radius-md);
}

.hero-figure {
  margin-bottom: 16px;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.hero-figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.hero-right .hero-sub-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 14px;
}

.quick-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.quick-link-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: transform var(--transition-base), border-color var(--transition-base);
}

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

.quick-link-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
}

.quick-link-desc {
  font-size: 12px;
  color: var(--color-text-light);
  line-height: 1.5;
}

/* 执行摘要 */
.summary-section {
  padding: 48px 0 0;
}

.summary-inner {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px;
  text-align: left;
}

.summary-inner .section-title {
  margin-bottom: 12px;
}

.summary-text {
  font-size: 16px;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* 题材分类 */
.category-section {
  padding: 48px 0 0;
}

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

.category-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.category-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(26, 26, 26, 0.06);
}

.category-card-link {
  display: block;
}

.category-cover {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.category-name {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  padding: 14px 16px 4px;
}

.category-desc {
  font-size: 13px;
  color: var(--color-text-secondary);
  padding: 0 16px 16px;
  line-height: 1.6;
}

/* 最近更新 */
.update-section {
  padding: 48px 0 0;
}

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

.update-item {
  display: flex;
  align-items: center;
  gap: 16px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  transition: border-color var(--transition-base);
}

.update-item:hover {
  border-color: var(--color-accent);
}

.update-thumb {
  width: 56px;
  height: 72px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.update-info {
  flex: 1;
  min-width: 0;
}

.update-title-text {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 2px;
}

.update-title-text a {
  color: var(--color-text);
}

.update-title-text a:hover {
  color: var(--color-accent);
}

.update-meta {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-bottom: 2px;
  flex-wrap: wrap;
}

.update-desc {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.5;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 480px;
}

.update-time {
  font-size: 13px;
  color: var(--color-text-light);
  flex-shrink: 0;
}

/* 人气榜单 */
.ranking-section {
  padding: 48px 0 0;
}

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

.ranking-item {
  display: flex;
  align-items: center;
  gap: 16px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 12px 18px;
  transition: border-color var(--transition-base);
}

.ranking-item:hover {
  border-color: var(--color-accent);
}

.rank-num {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background-color: var(--color-bg);
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text-secondary);
}

.ranking-item:nth-child(1) .rank-num {
  background-color: var(--color-highlight);
  color: #fff;
}

.ranking-item:nth-child(2) .rank-num {
  background-color: rgba(74, 74, 74, 0.2);
  color: var(--color-text);
}

.ranking-item:nth-child(3) .rank-num {
  background-color: rgba(140, 90, 107, 0.15);
  color: var(--color-accent);
}

.rank-cover {
  width: 40px;
  height: 52px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.rank-info {
  flex: 1;
  min-width: 0;
}

.rank-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 2px;
}

.rank-title a {
  color: var(--color-text);
}

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

.rank-meta {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.rank-heat {
  font-size: 13px;
  color: var(--color-highlight);
  font-weight: 600;
  flex-shrink: 0;
}

/* 阅读路径（首页） */
.path-section {
  padding: 48px 0 0;
}

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

.path-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.path-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(26, 26, 26, 0.06);
}

.path-card-title {
  font-size: 19px;
  font-weight: 700;
  color: var(--color-text);
}

.path-card-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  flex: 1;
}

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

.path-card-link::after {
  content: "";
  width: 6px;
  height: 6px;
  border-right: 2px solid var(--color-accent);
  border-bottom: 2px solid var(--color-accent);
  transform: rotate(-45deg);
  transition: transform var(--transition-base);
}

.path-card-link:hover::after {
  transform: rotate(-45deg) translate(2px, 2px);
}

/* FAQ 与帮助入口 */
.faq-help-section {
  padding: 48px 0 0;
}

.faq-help-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
  align-items: start;
}

.faq-side {
  min-width: 0;
}

.faq-side .section-title {
  margin-bottom: 14px;
}

.more-faq-link {
  display: inline-block;
  font-size: 14px;
  color: var(--color-accent);
  margin-top: 6px;
}

.help-side {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
}

.help-side .section-title {
  margin-bottom: 14px;
}

.help-cards {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.help-card {
  display: block;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px;
  transition: border-color var(--transition-base);
}

.help-card:hover {
  border-color: var(--color-accent);
}

.help-card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

.help-card-desc {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   PAGES — 目录页
   ========================================================================== */

/* 筛选面板 */
.filter-panel {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 40px;
}

.filter-panel .section-title {
  margin-bottom: 14px;
}

.tag-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.status-filter {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  padding-top: 14px;
  border-top: 1px solid var(--color-border);
}

.filter-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  margin-right: 4px;
}

/* 作品分组 */
.work-group {
  margin-bottom: 40px;
}

.work-group .section-title {
  margin-bottom: 4px;
}

.group-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 18px;
}

/* ==========================================================================
   PAGES — 阅读路径页
   ========================================================================== */

.level-section {
  margin-bottom: 48px;
}

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

.level-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
}

.level-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.level-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 10px;
}

.level-tip {
  font-size: 13px;
  color: var(--color-accent);
  line-height: 1.6;
  padding-top: 10px;
  border-top: 1px solid var(--color-border);
}

/* 路径列表 */
.path-section {
  margin-bottom: 48px;
}

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

.path-item {
  display: flex;
  align-items: center;
  gap: 16px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px 18px;
}

.path-order {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--color-accent);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
}

.path-cover {
  flex-shrink: 0;
  width: 56px;
  height: 72px;
  overflow: hidden;
  border-radius: var(--radius-sm);
}

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

.path-info {
  flex: 1;
  min-width: 0;
}

.path-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 2px;
}

.path-meta {
  font-size: 13px;
  color: var(--color-text-light);
  margin-bottom: 2px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.path-desc {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* 题材偏好 */
.preference-section {
  margin-bottom: 48px;
}

.preference-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.preference-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: transform var(--transition-base), border-color var(--transition-base);
}

.preference-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-accent);
}

.preference-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
}

.preference-desc {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  flex: 1;
}

.preference-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-accent);
}

/* 结论 */
.conclusion-section {
  margin-bottom: 16px;
}

.conclusion-content {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px;
}

.conclusion-text {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 12px;
}

.conclusion-text:last-child {
  margin-bottom: 0;
}

.conclusion-text a {
  color: var(--color-accent);
  text-decoration: underline;
}

/* ==========================================================================
   PAGES — 作者索引页
   ========================================================================== */

.author-group-nav {
  margin-bottom: 32px;
}

.group-tabs {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.group-tab {
  display: inline-block;
  padding: 8px 20px;
  font-size: 14px;
  border-radius: 20px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  transition: background-color var(--transition-base), color var(--transition-base), border-color var(--transition-base);
}

.group-tab:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.author-grid-section {
  margin-bottom: 48px;
}

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

.author-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.author-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(26, 26, 26, 0.06);
}

.author-card-media {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  overflow: hidden;
  background-color: var(--color-bg);
}

.author-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.author-card-name {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
}

.author-card-tags {
  font-size: 13px;
  color: var(--color-accent);
  line-height: 1.6;
}

.author-card-works {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.6;
}

.author-card > a {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-accent);
  margin-top: 4px;
}

/* 作者详情 */
.author-detail-section {
  margin-bottom: 48px;
}

.author-profile {
  display: flex;
  gap: 24px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px;
  margin-bottom: 24px;
}

.author-profile-media {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  background-color: var(--color-bg);
}

.author-profile-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.author-profile-info {
  flex: 1;
  min-width: 0;
}

.author-profile-desc {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 12px;
}

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

.author-profile-tags li {
  font-size: 13px;
  padding: 4px 12px;
  border-radius: 20px;
  background-color: rgba(140, 90, 107, 0.08);
  color: var(--color-accent);
}

.author-timeline {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.timeline-item {
  display: flex;
  gap: 20px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
}

.timeline-marker {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 56px;
}

.timeline-year {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-accent);
  white-space: nowrap;
}

.timeline-content {
  flex: 1;
  min-width: 0;
  padding-left: 20px;
  border-left: 2px solid var(--color-border);
}

.timeline-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

.timeline-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.author-detail-note {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-top: 20px;
  line-height: 1.7;
}

.author-detail-note a {
  color: var(--color-accent);
  text-decoration: underline;
}

/* ==========================================================================
   PAGES — 阅读帮助页
   ========================================================================== */

.help-section {
  margin-bottom: 48px;
}

/* 封面卡信息图 */
.cover-card-figure {
  margin-bottom: 20px;
}

.cover-card-sample {
  position: relative;
  display: inline-block;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.cover-card-sample img {
  width: 240px;
  aspect-ratio: 3 / 4;
  object-fit: cover;
}

.sample-tag,
.sample-status,
.sample-update {
  position: absolute;
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 20px;
  background-color: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--color-border);
}

.sample-tag {
  top: 10px;
  left: 10px;
  color: var(--color-accent);
}

.sample-status {
  top: 10px;
  right: 10px;
  color: var(--color-text-secondary);
}

.sample-update {
  bottom: 10px;
  left: 10px;
  color: var(--color-text-light);
}

.figure-caption {
  font-size: 13px;
  color: var(--color-text-light);
  margin-top: 10px;
  line-height: 1.6;
}

/* 字段说明 */
.field-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
  margin-top: 20px;
}

.field-item {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 14px 16px;
}

.field-name {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

.field-desc {
  display: block;
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* 基本操作 */
.ops-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.op-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
}

.op-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}

.op-text {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.op-link {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-accent);
  margin-top: 8px;
}

/* ==========================================================================
   PAGES — 常见问题页
   ========================================================================== */

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

.content-media {
  margin: 16px 0;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.content-media img {
  width: 100%;
  max-height: 240px;
  object-fit: cover;
}

.content-media figcaption {
  font-size: 13px;
  color: var(--color-text-light);
  padding: 8px 0;
}

.content-media-inline {
  max-width: 360px;
  margin-bottom: 20px;
}

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

.faq-more {
  margin-top: 8px;
}

/* ==========================================================================
   PAGES — 版权与反馈页
   ========================================================================== */

.content-source-section,
.copyright-statement,
.content-principles,
.feedback-guide {
  margin-bottom: 48px;
}

.section-heading {
  margin-bottom: 16px;
}

.section-heading .section-title {
  margin-bottom: 0;
}

.source-flow-figure {
  margin-bottom: 20px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
}

.source-flow-image {
  width: 100%;
  max-height: 200px;
  object-fit: cover;
}

.source-flow-figure .figure-caption {
  padding: 10px 16px;
}

.section-text {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.statement-block,
.feedback-block {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 16px;
}

.block-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

.block-text {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 10px;
}

.block-text:last-child {
  margin-bottom: 0;
}

.principle-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.principle-item {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
}

/* ==========================================================================
   PAGES — 404 页
   ========================================================================== */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
}

.error-section {
  text-align: center;
  max-width: 520px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 48px 40px;
}

.error-code {
  font-size: 64px;
  font-weight: 700;
  color: var(--color-border);
  line-height: 1;
  margin-bottom: 12px;
}

.error-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 10px;
}

.error-desc {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}

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

.btn {
  display: inline-block;
  padding: 10px 24px;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-base), color var(--transition-base), border-color var(--transition-base);
}

.btn-primary {
  background-color: var(--color-accent);
  color: #fff;
  border: 1px solid var(--color-accent);
}

.btn-primary:hover {
  background-color: #7a4a5b;
  color: #fff;
}

.btn-secondary {
  background-color: var(--color-card);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

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

/* ==========================================================================
   RESPONSIVE — 响应式
   ========================================================================== */

@media (max-width: 992px) {
  .hero-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .hero-left {
    padding-right: 0;
  }

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

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

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

  .faq-help-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

@media (max-width: 768px) {
  .header-inner {
    height: 60px;
  }

  .brand-tagline {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    order: 3;
  }

  .nav-list {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background-color: var(--color-card);
    flex-direction: column;
    align-items: stretch;
    padding: 12px 24px 20px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 8px 24px rgba(26, 26, 26, 0.08);
    display: none;
    max-height: calc(100vh - 60px);
    overflow-y: auto;
    z-index: 300;
  }

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

  .nav-item {
    width: 100%;
  }

  .nav-link {
    padding: 12px 8px;
    font-size: 16px;
  }

  .nav-item.is-current > .nav-link::after {
    left: 8px;
    right: auto;
    width: 20px;
  }

  .has-dropdown .dropdown-panel {
    position: static;
    min-width: 0;
    box-shadow: none;
    border: none;
    border-left: 2px solid var(--color-border);
    border-radius: 0;
    padding: 4px 0 4px 16px;
    margin-left: 8px;
    display: grid;
  }

  .dropdown-panel {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .dropdown-title {
    margin-top: 6px;
  }

  .page-title {
    font-size: 28px;
  }

  .footer-inner {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

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

  .steps-row {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .level-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .path-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .preference-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .ops-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .author-profile {
    flex-direction: column;
    gap: 16px;
  }

  .timeline-item {
    flex-direction: column;
    gap: 8px;
  }

  .timeline-content {
    padding-left: 12px;
  }

  .update-item {
    flex-wrap: wrap;
  }

  .update-time {
    width: 100%;
    padding-left: 72px;
  }

  .update-desc {
    white-space: normal;
  }

  .hero-title {
    font-size: 28px;
  }

  .hero-layout {
    gap: 24px;
  }

  .quick-links {
    grid-template-columns: 1fr;
  }

  .category-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .author-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .faq-help-layout {
    grid-template-columns: 1fr;
  }

  .ranking-item {
    flex-wrap: wrap;
  }

  .rank-heat {
    width: 100%;
    padding-left: 48px;
  }

  .cover-wall {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 14px;
  }

  .cover-card-sample img {
    width: 180px;
  }
}

@media (max-width: 480px) {
  .header-inner,
  .footer-inner,
  .home-main > section,
  .inner-main {
    padding-left: 16px;
    padding-right: 16px;
  }

  .page-title {
    font-size: 24px;
  }

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

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .preference-grid {
    grid-template-columns: 1fr;
  }

  .category-grid {
    grid-template-columns: 1fr;
  }

  .cover-wall {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 10px;
  }

  .cover-title {
    font-size: 14px;
    padding: 8px 8px 2px;
  }

  .cover-meta {
    padding: 0 8px 8px;
  }

  .update-thumb {
    width: 48px;
    height: 64px;
  }

  .update-time {
    padding-left: 64px;
  }

  .hero-title {
    font-size: 24px;
  }

  .hero-desc {
    font-size: 15px;
  }

  .summary-inner {
    padding: 24px 20px;
  }

  .error-section {
    padding: 32px 24px;
  }

  .error-code {
    font-size: 48px;
  }

  .path-item {
    flex-wrap: wrap;
  }

  .path-cover {
    width: 48px;
    height: 64px;
  }

  .author-profile-media {
    width: 72px;
    height: 72px;
  }

  .group-tabs {
    gap: 6px;
  }

  .group-tab {
    padding: 6px 14px;
    font-size: 13px;
  }

  .field-list {
    grid-template-columns: 1fr;
  }

  .faq-item summary {
    padding: 12px 14px;
    font-size: 14px;
  }

  .faq-item .faq-answer,
  .faq-item p {
    padding: 0 14px 12px;
    font-size: 13px;
  }
}