/* ==========================================================================
   天堂漫画 · 全站样式表
   站点：nqohb.com
   说明：本文件为整站唯一 CSS，覆盖首页、7 个内页与 404 页。
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* ==========================================================================
   Base
   ========================================================================== */

:root {
  --page-bg: #F6F8F7;
  --card-bg: #FFFFFF;
  --text-main: #1F2933;
  --text-secondary: #52606D;
  --accent: #0D9488;
  --accent-light: #14B8A6;
  --divider: #E4E8E7;
  --radius: 8px;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
  --shadow-hover: 0 8px 20px rgba(13, 148, 136, 0.12);
  --container: 1120px;
  --font-stack: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

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

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

body {
  font-family: var(--font-stack);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-main);
  background-color: var(--page-bg);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4 {
  line-height: 1.35;
  font-weight: 600;
}

h1 {
  font-size: 32px;
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 18px;
}

p {
  color: var(--text-secondary);
}

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

/* ==========================================================================
   Layout
   ========================================================================== */

.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

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

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  height: 68px;
  display: flex;
  align-items: center;
  gap: 32px;
}

.logo {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.logo-mark {
  display: inline-block;
  width: 32px;
  height: 32px;
  border-radius: var(--radius);
  background: var(--accent);
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  text-align: center;
  line-height: 32px;
}

.site-nav {
  flex: 1 1 auto;
}

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

.nav-list li a {
  display: block;
  padding: 8px 14px;
  border-radius: var(--radius);
  font-size: 15px;
  color: var(--text-secondary);
  font-weight: 500;
}

.nav-list li a:hover {
  color: var(--accent);
  background: rgba(13, 148, 136, 0.06);
}

.nav-list li a.is-current {
  color: var(--accent);
  background: rgba(13, 148, 136, 0.1);
  font-weight: 600;
}

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

.tool-link {
  font-size: 14px;
  padding: 6px 14px;
  border: 1px solid var(--divider);
  border-radius: 999px;
  color: var(--text-secondary);
  background: var(--card-bg);
}

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

.nav-toggle {
  display: none;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle-line {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
}

/* 内页容器 */
.site-inner {
  flex: 1 0 auto;
}

.inner-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px 64px;
  width: 100%;
}

/* 面包屑 */
.breadcrumb {
  padding: 16px 0 8px;
  font-size: 14px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

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

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

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

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

/* 页面标题区 */
.page-header {
  padding: 32px 0 24px;
  border-bottom: 1px solid var(--divider);
  margin-bottom: 32px;
}

.page-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}

.page-description {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 720px;
}

/* 页脚 */
.site-footer {
  background: var(--card-bg);
  border-top: 1px solid var(--divider);
  margin-top: auto;
}

.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 48px 24px 32px;
  display: grid;
  grid-template-columns: 1.2fr 1fr 1.4fr;
  gap: 40px;
}

.footer-brand .footer-logo {
  display: inline-block;
  font-size: 20px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 12px;
}

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

.footer-nav h3,
.footer-about h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-main);
}

.footer-nav ul li {
  margin-bottom: 10px;
}

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

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

.footer-about p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

/* ==========================================================================
   Components
   ========================================================================== */

/* 封面卡（通用） */
.cover-card {
  display: block;
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--divider);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.cover-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

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

.cover-name {
  display: block;
  padding: 10px 12px 2px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
}

.cover-tag {
  display: inline-block;
  padding: 0 12px 10px;
  font-size: 13px;
  color: var(--accent);
}

/* 封面卡（genre-wall 扩展） */
.cover-figure {
  margin: 0;
  overflow: hidden;
  background: var(--page-bg);
}

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

.cover-title {
  display: block;
  padding: 10px 12px 2px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
}

.cover-desc {
  display: block;
  padding: 0 12px 10px;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.genre-tag {
  display: inline-block;
  font-size: 13px;
  color: var(--accent);
}

/* 区块标题 */
.section-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 24px;
}

.section-heading h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-main);
}

.section-link {
  font-size: 14px;
  color: var(--accent);
  font-weight: 500;
}

.section-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
}

.section-note {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

/* 排名列表 */
.rank-list {
  display: flex;
  flex-direction: column;
}

.rank-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--divider);
}

.rank-item:last-child {
  border-bottom: 0;
}

.rank-num {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-secondary);
  width: 32px;
  flex-shrink: 0;
  text-align: center;
}

.rank-item:nth-child(1) .rank-num,
.rank-item:nth-child(2) .rank-num,
.rank-item:nth-child(3) .rank-num {
  color: var(--accent);
}

.rank-item img {
  width: 48px;
  height: 64px;
  object-fit: cover;
  border-radius: 4px;
  flex-shrink: 0;
}

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

.rank-name {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
}

.rank-genre {
  display: block;
  font-size: 13px;
  color: var(--text-secondary);
}

/* 通用文本链接 */
.text-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--accent);
}

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

/* ==========================================================================
   Pages · 首页
   ========================================================================== */

.home-main {
  width: 100%;
}

/* 首屏横向封面带 */
.hero-cover-strip {
  background: var(--card-bg);
  border-bottom: 1px solid var(--divider);
}

.strip-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 32px 24px;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 24px;
}

.hero-feature {
  display: block;
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  background: var(--page-bg);
}

.hero-figure {
  margin: 0;
  position: relative;
}

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

.hero-figure figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 32px 20px 16px;
  background: linear-gradient(to top, rgba(15, 23, 42, 0.85), transparent);
}

.hero-tag {
  display: inline-block;
  font-size: 13px;
  color: #fff;
  background: var(--accent);
  padding: 2px 10px;
  border-radius: 999px;
  margin-bottom: 8px;
}

.hero-title {
  display: block;
  font-size: 22px;
  font-weight: 700;
  color: #fff;
}

.strip-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.strip-card {
  display: block;
  background: var(--card-bg);
  border: 1px solid var(--divider);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.strip-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

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

.strip-name {
  display: block;
  padding: 10px 12px 2px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
}

.strip-genre {
  display: block;
  padding: 0 12px 10px;
  font-size: 13px;
  color: var(--accent);
}

/* 题材入口区 */
.genre-entry {
  max-width: var(--container);
  margin: 0 auto;
  padding: 56px 24px 24px;
}

.genre-entry .section-heading h1 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-main);
}

.genre-entry .section-heading p {
  font-size: 14px;
  color: var(--text-secondary);
}

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

.genre-card {
  display: block;
  background: var(--card-bg);
  border: 1px solid var(--divider);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.genre-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

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

.genre-card h3 {
  padding: 12px 16px 0;
  font-size: 18px;
  font-weight: 600;
  color: var(--text-main);
}

.genre-card p {
  padding: 4px 16px 14px;
  font-size: 13px;
  color: var(--text-secondary);
}

/* 追更日历摘要 */
.follow-summary {
  max-width: var(--container);
  margin: 0 auto;
  padding: 40px 24px 24px;
}

.follow-list {
  background: var(--card-bg);
  border: 1px solid var(--divider);
  border-radius: var(--radius);
  padding: 8px 20px;
}

.follow-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--divider);
}

.follow-item:last-child {
  border-bottom: 0;
}

.follow-date {
  font-size: 14px;
  color: var(--text-secondary);
  flex-shrink: 0;
  min-width: 80px;
}

.follow-name {
  flex: 1 1 auto;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-main);
}

.follow-status {
  font-size: 13px;
  color: var(--accent);
  flex-shrink: 0;
}

/* 热力榜摘要 + 主题书单入口 */
.rank-read-wrap {
  max-width: var(--container);
  margin: 0 auto;
  padding: 40px 24px 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.heat-summary {
  background: var(--card-bg);
  border: 1px solid var(--divider);
  border-radius: var(--radius);
  padding: 24px;
}

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

.booklist-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.booklist-card {
  display: block;
  background: var(--card-bg);
  border: 1px solid var(--divider);
  border-radius: var(--radius);
  padding: 16px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.booklist-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.booklist-cover-stack {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.booklist-cover-stack img {
  width: 56px;
  height: 74px;
  object-fit: cover;
  border-radius: 4px;
}

.booklist-meta h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 4px;
}

.booklist-meta p {
  font-size: 14px;
  color: var(--text-secondary);
}

/* 站点说明简介 */
.site-note {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 24px 56px;
  text-align: left;
}

.site-note h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
}

.site-note p {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.site-note p a {
  font-weight: 500;
}

/* ==========================================================================
   Pages · 题材索引（genre-wall）
   ========================================================================== */

.page-layout.sidebar-left {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 32px;
  align-items: start;
}

.genre-nav {
  background: var(--card-bg);
  border: 1px solid var(--divider);
  border-radius: var(--radius);
  padding: 16px 8px;
  position: sticky;
  top: 88px;
}

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

.genre-nav-item {
  display: block;
  padding: 10px 14px;
  border-radius: 6px;
  border-left: 3px solid transparent;
  transition: background 0.2s ease;
}

.genre-nav-item:hover {
  background: rgba(13, 148, 136, 0.06);
}

.genre-nav-item.is-active {
  border-left-color: var(--accent);
  background: rgba(13, 148, 136, 0.08);
}

.genre-name {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
}

.genre-hint {
  display: block;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-top: 2px;
}

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

.genre-block {
  margin-bottom: 40px;
  scroll-margin-top: 88px;
}

.genre-block-header {
  margin-bottom: 16px;
}

.genre-block-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}

.genre-intro {
  font-size: 14px;
  color: var(--text-secondary);
}

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

.genre-block:nth-child(3) .cover-grid,
.genre-block:nth-child(4) .cover-grid,
.genre-block:nth-child(5) .cover-grid,
.genre-block:nth-child(6) .cover-grid {
  grid-template-columns: repeat(3, 1fr);
}

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

.genre-related-links {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--divider);
}

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

.related-link-list a {
  display: inline-block;
  padding: 8px 18px;
  border: 1px solid var(--divider);
  border-radius: 999px;
  font-size: 14px;
  color: var(--text-secondary);
  background: var(--card-bg);
}

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

/* ==========================================================================
   Pages · 追更日历（follow-calendar）
   ========================================================================== */

.calendar-filter {
  display: flex;
  gap: 8px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.filter-chip {
  display: inline-block;
  padding: 8px 20px;
  border: 1px solid var(--divider);
  border-radius: 999px;
  font-size: 14px;
  color: var(--text-secondary);
  background: var(--card-bg);
}

.filter-chip:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.calendar-list {
  margin-bottom: 48px;
  scroll-margin-top: 88px;
}

.date-group {
  margin-bottom: 24px;
}

.date-label {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.badge-new {
  display: inline-block;
  font-size: 12px;
  color: #fff;
  background: var(--accent);
  padding: 2px 8px;
  border-radius: 999px;
  font-weight: 500;
}

.update-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.update-note {
  background: var(--card-bg);
  border: 1px solid var(--divider);
  border-radius: var(--radius);
  padding: 24px;
  margin-top: 32px;
}

.update-note .section-title {
  font-size: 20px;
  margin-bottom: 12px;
}

.update-note p {
  font-size: 14px;
  margin-bottom: 8px;
}

.update-note p a {
  font-weight: 500;
}

/* ==========================================================================
   Pages · 热力榜（heat-rank）
   ========================================================================== */

.rank-section {
  margin-bottom: 40px;
}

.rank-section .section-head {
  margin-bottom: 16px;
}

.rank-section .section-head h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-main);
}

.rank-section .section-head .section-note {
  font-size: 14px;
  color: var(--text-secondary);
}

.rank-section .rank-list {
  background: var(--card-bg);
  border: 1px solid var(--divider);
  border-radius: var(--radius);
  padding: 8px 20px;
}

.rank-cover {
  flex-shrink: 0;
}

.rank-cover img {
  width: 48px;
  height: 64px;
  object-fit: cover;
  border-radius: 4px;
}

.rank-info h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
}

.rank-info .genre-tag {
  font-size: 13px;
}

.rank-note {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 16px;
}

.layout-shell.sidebar-right {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 32px;
  align-items: start;
}

.rank-aside {
  background: var(--card-bg);
  border: 1px solid var(--divider);
  border-radius: var(--radius);
  padding: 20px;
  position: sticky;
  top: 88px;
}

.genre-rank-block {
  margin-bottom: 24px;
}

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

.genre-rank-block h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--divider);
}

.genre-rank-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
}

.mini-rank {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-secondary);
  width: 20px;
  flex-shrink: 0;
  text-align: center;
}

.genre-rank-list li a {
  font-size: 14px;
  color: var(--text-main);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.genre-rank-list li a:hover {
  color: var(--accent);
}

.aside-link {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--divider);
  font-size: 14px;
}

/* ==========================================================================
   Pages · 主题书单（reading-list）
   ========================================================================== */

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

.section-intro {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.booklist-item {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 24px;
  background: var(--card-bg);
  border: 1px solid var(--divider);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
  align-items: start;
}

.booklist-cover-group {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.book-cover {
  margin: 0;
}

.book-cover img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: 4px;
}

.book-cover figcaption {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 4px;
  text-align: center;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.booklist-info h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}

.booklist-scene {
  font-size: 14px;
  color: var(--accent);
  margin-bottom: 12px;
}

.booklist-reasons {
  margin-bottom: 16px;
}

.booklist-reasons li {
  font-size: 14px;
  color: var(--text-secondary);
  padding: 6px 0;
  border-bottom: 1px dashed var(--divider);
  line-height: 1.6;
}

.booklist-reasons li:last-child {
  border-bottom: 0;
}

.booklist-reasons li strong {
  color: var(--text-main);
  font-weight: 600;
}

/* 推荐理由摘要 */
.recommendation-summary {
  margin-bottom: 48px;
}

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

.summary-card {
  background: var(--card-bg);
  border: 1px solid var(--divider);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.summary-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

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

.summary-card h3 {
  padding: 12px 16px 4px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
}

.summary-card p {
  padding: 0 16px 16px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* 书单使用提示 */
.booklist-tip {
  background: var(--card-bg);
  border: 1px solid var(--divider);
  border-radius: var(--radius);
  padding: 24px;
}

.booklist-tip .section-title {
  font-size: 20px;
  margin-bottom: 12px;
}

.tip-content p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.tip-content p a {
  font-weight: 500;
}

/* ==========================================================================
   Pages · 阅读指南（reading-guide）
   ========================================================================== */

.guide-section {
  margin-bottom: 40px;
}

.guide-section h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
}

.guide-section > p {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

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

.structure-list li {
  background: var(--card-bg);
  border: 1px solid var(--divider);
  border-radius: var(--radius);
  padding: 16px 20px;
}

.structure-list li h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 4px;
}

.structure-list li p {
  font-size: 14px;
  color: var(--text-secondary);
}

.path-figure {
  margin: 24px 0 40px;
  background: var(--card-bg);
  border: 1px solid var(--divider);
  border-radius: var(--radius);
  padding: 16px;
}

.path-figure img {
  width: 100%;
  aspect-ratio: 16 / 6;
  object-fit: cover;
  border-radius: 4px;
}

.path-figure figcaption {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 8px;
  text-align: center;
}

/* FAQ 折叠 */
.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--divider);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-item summary {
  padding: 16px 20px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 40px;
}

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

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

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

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

.faq-item p {
  padding: 0 20px 16px;
  font-size: 14px;
  color: var(--text-secondary);
}

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

.guide-note p a {
  font-weight: 500;
}

/* ==========================================================================
   Pages · 本站说明（site-about）
   ========================================================================== */

.about-section {
  background: var(--card-bg);
  border: 1px solid var(--divider);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
}

.about-section h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
}

.about-section > p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.about-section > p:last-child {
  margin-bottom: 0;
}

.scope-list {
  margin: 12px 0;
}

.scope-list li {
  font-size: 14px;
  color: var(--text-secondary);
  padding: 8px 0 8px 20px;
  position: relative;
  border-bottom: 1px dashed var(--divider);
}

.scope-list li:last-child {
  border-bottom: 0;
}

.scope-list li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 16px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.about-figure {
  margin: 24px 0 0;
  background: var(--card-bg);
  border: 1px solid var(--divider);
  border-radius: var(--radius);
  padding: 16px;
}

.about-figure img {
  width: 100%;
  aspect-ratio: 16 / 6;
  object-fit: cover;
  border-radius: 4px;
}

.about-figure figcaption {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 8px;
  text-align: center;
}

/* ==========================================================================
   Pages · 404
   ========================================================================== */

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

.error-panel {
  text-align: center;
  max-width: 480px;
  background: var(--card-bg);
  border: 1px solid var(--divider);
  border-radius: var(--radius);
  padding: 48px 40px;
}

.error-code {
  font-size: 64px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 16px;
}

.error-panel h1 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
}

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

.error-home {
  display: inline-block;
  padding: 10px 28px;
  background: var(--accent);
  color: #fff;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
}

.error-home:hover {
  background: var(--accent-light);
  color: #fff;
}

/* ==========================================================================
   Responsive
   ========================================================================== */

/* 平板竖屏 */
@media (max-width: 1024px) {
  .header-inner {
    gap: 16px;
    padding: 0 16px;
  }

  .nav-list li a {
    padding: 8px 10px;
    font-size: 14px;
  }

  .strip-inner {
    grid-template-columns: 1fr;
  }

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

  .rank-read-wrap {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .page-layout.sidebar-left {
    grid-template-columns: 200px 1fr;
    gap: 24px;
  }

  .cover-grid,
  .genre-block:nth-child(3) .cover-grid,
  .genre-block:nth-child(4) .cover-grid,
  .genre-block:nth-child(5) .cover-grid,
  .genre-block:nth-child(6) .cover-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .layout-shell.sidebar-right {
    grid-template-columns: 1fr 240px;
    gap: 24px;
  }

  .booklist-item {
    grid-template-columns: 260px 1fr;
    gap: 16px;
  }

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

  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

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

/* 手机横屏与平板小 */
@media (max-width: 768px) {
  .header-inner {
    height: 60px;
    gap: 12px;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-list {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--card-bg);
    border-bottom: 1px solid var(--divider);
    flex-direction: column;
    align-items: stretch;
    padding: 8px 16px;
    box-shadow: var(--shadow-md);
  }

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

  .nav-list li a {
    padding: 12px 16px;
    font-size: 15px;
    border-radius: 6px;
  }

  .header-tools .tool-link:first-child {
    display: none;
  }

  .site-nav {
    order: 3;
    margin-left: auto;
  }

  .header-tools {
    order: 2;
  }

  .logo {
    order: 1;
  }

  .inner-main {
    padding: 0 16px 48px;
  }

  .page-header {
    padding: 24px 0 16px;
    margin-bottom: 24px;
  }

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

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

  .breadcrumb {
    padding: 12px 0 4px;
  }

  .strip-inner {
    padding: 20px 16px;
  }

  .strip-list {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .genre-entry,
  .follow-summary,
  .rank-read-wrap,
  .site-note {
    padding-left: 16px;
    padding-right: 16px;
  }

  .genre-entry {
    padding-top: 40px;
  }

  .genre-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .follow-item {
    flex-wrap: wrap;
    gap: 4px 12px;
  }

  .follow-date {
    min-width: auto;
  }

  .follow-name {
    flex-basis: calc(100% - 100px);
  }

  .page-layout.sidebar-left {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .genre-nav {
    position: static;
    overflow-x: auto;
    padding: 12px;
    -webkit-overflow-scrolling: touch;
  }

  .genre-nav-list {
    flex-direction: row;
    gap: 8px;
    min-width: max-content;
  }

  .genre-nav-item {
    padding: 8px 14px;
    border-left: 0;
    border-bottom: 2px solid transparent;
    white-space: nowrap;
  }

  .genre-nav-item.is-active {
    border-left: 0;
    border-bottom-color: var(--accent);
  }

  .genre-hint {
    display: none;
  }

  .cover-grid,
  .genre-block:nth-child(3) .cover-grid,
  .genre-block:nth-child(4) .cover-grid,
  .genre-block:nth-child(5) .cover-grid,
  .genre-block:nth-child(6) .cover-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .calendar-filter {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
  }

  .filter-chip {
    flex-shrink: 0;
  }

  .update-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .layout-shell.sidebar-right {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .rank-aside {
    position: static;
  }

  .booklist-item {
    grid-template-columns: 1fr;
  }

  .booklist-cover-group {
    grid-template-columns: repeat(3, 1fr);
    max-width: 320px;
  }

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

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 32px 16px 24px;
  }

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

  .error-main {
    padding: 48px 16px;
  }

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

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

/* 小屏手机 */
@media (max-width: 480px) {
  .strip-list {
    grid-template-columns: 1fr;
  }

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

  .cover-grid,
  .genre-block:nth-child(3) .cover-grid,
  .genre-block:nth-child(4) .cover-grid,
  .genre-block:nth-child(5) .cover-grid,
  .genre-block:nth-child(6) .cover-grid {
    grid-template-columns: 1fr;
  }

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

  .rank-item {
    gap: 12px;
  }

  .rank-item img {
    width: 40px;
    height: 54px;
  }

  .rank-num {
    width: 24px;
    font-size: 18px;
  }

  .booklist-cover-group {
    grid-template-columns: repeat(3, 1fr);
    max-width: none;
  }

  .booklist-cover-group .book-cover:last-child {
    display: none;
  }

  .genre-nav {
    margin: 0 -16px;
    border-radius: 0;
    border-left: 0;
    border-right: 0;
  }

  .calendar-filter {
    margin: 0 -16px;
    padding: 0 16px 4px;
  }

  .hero-feature {
    border-radius: 6px;
  }

  .hero-title {
    font-size: 18px;
  }
}

/* 打印样式 */
@media print {
  .site-header,
  .breadcrumb,
  .site-note,
  .genre-related-links,
  .calendar-filter,
  .update-note,
  .rank-aside,
  .booklist-tip,
  .guide-note,
  .error-home {
    display: none;
  }

  .site-footer {
    border-top: 1px solid #999;
  }

  .footer-inner {
    display: block;
    padding: 16px 0;
  }

  .footer-nav,
  .footer-about {
    display: none;
  }

  .footer-brand .footer-tagline {
    display: none;
  }

  body {
    background: #fff;
    font-size: 12px;
  }

  .inner-main {
    max-width: 100%;
    padding: 0;
  }

  .page-header {
    padding: 16px 0 8px;
    border-bottom: 1px solid #999;
    margin-bottom: 16px;
  }

  .page-title {
    font-size: 22px;
  }

  .cover-card,
  .genre-card,
  .rank-item,
  .booklist-item,
  .summary-card,
  .about-section,
  .faq-item {
    box-shadow: none;
    border: 1px solid #ccc;
  }

  .genre-nav {
    display: none;
  }

  .page-layout.sidebar-left,
  .layout-shell.sidebar-right {
    display: block;
  }

  .cover-grid,
  .update-grid,
  .summary-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .rank-read-wrap {
    display: block;
  }
}

/* 程序验收反馈：修复网格孤项 */
@media (min-width: 769px) {
  .cover-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}