/* ============================================================
   虫虫漫画 · 整站样式表
   版本：1.0
   说明：本文件为 bjcjfc.com 全站唯一样式来源，
   覆盖首页、内页、导航、侧栏、列表、卡片、表格、页脚等全部 DOM。
   ============================================================ */

/* ============================================================
   1. Base —— 基础变量、重置、字体、通用元素
   ============================================================ */
:root {
  --color-text: #2b2f36;
  --color-bg: #f5f7fa;
  --color-primary: #0e7c7b;
  --color-secondary: #14a085;
  --color-card: #ffffff;
  --color-border: #e2e8f0;
  --color-text-light: #5a6472;
  --color-text-lighter: #8a94a3;
  --font-sans: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --container-width: 1200px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --shadow-sm: 0 1px 3px rgba(43, 47, 54, 0.06);
  --shadow-md: 0 4px 12px rgba(43, 47, 54, 0.08);
  --shadow-lg: 0 8px 24px rgba(43, 47, 54, 0.1);
  --header-height: 72px;
  --transition-base: 0.2s ease;
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

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

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

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

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

ul,
ol {
  list-style: none;
}

button {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  border: none;
  background: none;
  cursor: pointer;
  color: inherit;
}

/* 通用容器 */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* 通用标题层级 */
h1,
h2,
h3,
h4 {
  line-height: 1.4;
  color: var(--color-text);
  font-weight: 600;
}

h1 {
  font-size: 32px;
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 18px;
}

p {
  line-height: 1.7;
}

/* 通用按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.5;
  transition: all var(--transition-base);
  border: 1px solid transparent;
  min-height: 44px;
}

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

.btn-primary:hover {
  background-color: #0a6b6a;
  color: #ffffff;
}

.btn-secondary {
  background-color: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-secondary:hover {
  background-color: rgba(14, 124, 123, 0.08);
  color: var(--color-primary);
}

.btn-text {
  padding: 6px 0;
  color: var(--color-primary);
  font-weight: 500;
  min-height: auto;
  border-bottom: 1px solid transparent;
}

.btn-text:hover {
  border-bottom-color: var(--color-primary);
}

/* 通用徽章 */
.badge {
  display: inline-block;
  padding: 2px 10px;
  font-size: 12px;
  line-height: 1.6;
  border-radius: 999px;
  background-color: rgba(14, 124, 123, 0.1);
  color: var(--color-primary);
  font-weight: 500;
}

/* 更新状态 */
.update-status {
  display: inline-block;
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.5;
}

/* 滚动出现动画（渐进增强，不影响初始可见性） */
.reveal {
  opacity: 1;
  transform: none;
  transition: opacity 0.4s ease, transform 0.4s ease;
}

/* ============================================================
   2. Layout —— 全站统一布局骨架
   ============================================================ */
.site-header {
  background-color: var(--color-card);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.logo-area {
  flex-shrink: 0;
}

.logo-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.logo-text {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
}

.logo-slogan {
  font-size: 12px;
  color: var(--color-text-lighter);
  line-height: 1.4;
}

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

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

.nav-list li {
  position: relative;
}

.nav-list a {
  display: block;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  line-height: 1.5;
  transition: color var(--transition-base), background-color var(--transition-base);
}

.nav-list a:hover {
  color: var(--color-primary);
  background-color: rgba(14, 124, 123, 0.06);
}

.nav-list a.is-current {
  color: var(--color-primary);
  background-color: rgba(14, 124, 123, 0.08);
  font-weight: 600;
}

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

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 1px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.site-main {
  min-height: calc(100vh - var(--header-height) - 320px);
}

/* 内页公共骨架 */
.inner-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 24px 64px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--color-text-lighter);
  margin-bottom: 24px;
}

.breadcrumb a {
  color: var(--color-text-lighter);
  transition: color var(--transition-base);
}

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

.breadcrumb-sep {
  color: var(--color-border);
  font-size: 13px;
}

.breadcrumb-current {
  color: var(--color-text);
  font-weight: 500;
}

.page-header {
  margin-bottom: 32px;
}

.page-title {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 8px;
}

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

/* 区块标题 */
.section-title {
  font-size: 24px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 8px;
}

.section-desc,
.section-intro {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 24px;
  max-width: 720px;
}

/* 页脚 */
.site-footer {
  background-color: var(--color-card);
  border-top: 1px solid var(--color-border);
  margin-top: 0;
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px 32px;
}

.footer-brand {
  margin-bottom: 32px;
}

.footer-logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
  line-height: 1.4;
}

.footer-desc {
  font-size: 14px;
  color: var(--color-text-light);
  max-width: 480px;
  line-height: 1.7;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-bottom: 40px;
}

.footer-col-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 12px;
}

.footer-col li {
  margin-bottom: 8px;
}

.footer-col a {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.6;
}

.footer-col a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 20px;
  font-size: 13px;
  color: var(--color-text-lighter);
  line-height: 1.6;
}

/* ============================================================
   3. Components —— 通用组件
   ============================================================ */

/* --- 封面卡片（题材页网格） --- */
.cover-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

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

.cover-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.cover-figure {
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background-color: var(--color-bg);
}

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

.card-info {
  padding: 14px 16px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
}

.card-title {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--color-text);
}

.card-info .badge {
  align-self: flex-start;
}

.card-info .update-status {
  font-size: 12px;
}

.card-desc {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-top: 4px;
}

/* --- 相关链接 --- */
.related-links {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

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

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

.related-list li {
  margin: 0;
}

.related-list a {
  display: inline-block;
  padding: 6px 16px;
  font-size: 14px;
  color: var(--color-primary);
  background-color: rgba(14, 124, 123, 0.06);
  border-radius: 999px;
  border: 1px solid rgba(14, 124, 123, 0.15);
  line-height: 1.6;
  transition: background-color var(--transition-base), color var(--transition-base);
}

.related-list a:hover {
  background-color: rgba(14, 124, 123, 0.12);
  color: var(--color-primary);
}

/* --- 侧栏（版权页、人气榜） --- */
.sidebar-area {
  min-width: 0;
}

.sidebar-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 24px;
}

.sidebar-card-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 12px;
  line-height: 1.5;
}

.sidebar-card p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 12px;
}

.sidebar-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sidebar-links li {
  margin: 0;
}

.sidebar-links a {
  font-size: 14px;
  color: var(--color-primary);
  line-height: 1.6;
}

/* ============================================================
   4. Pages —— 各页面专属样式
   ============================================================ */

/* ========== 首页 ========== */
.home-main {
  overflow: visible;
}

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

.hero-content {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 64px 24px 48px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 48px;
}

.hero-title {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
  color: var(--color-text);
}

.hero-desc {
  font-size: 16px;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 24px;
  max-width: 520px;
}

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

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

.hero-figure {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  background-color: var(--color-bg);
}

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

/* 题材分类导航 */
.topic-nav-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 64px 24px 24px;
}

.section-head {
  margin-bottom: 28px;
}

.section-head .section-title {
  margin-bottom: 6px;
}

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

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

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

.topic-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: rgba(14, 124, 123, 0.3);
}

.topic-card-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
  line-height: 1.5;
}

.topic-card-desc {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* 人气榜单 */
.popular-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px 24px;
}

.popular-list {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}

.popular-item {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.popular-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.rank-number {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.2;
}

.rank-cover {
  aspect-ratio: 3 / 4;
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-bg);
}

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

.rank-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.rank-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.5;
}

.section-more {
  margin-top: 24px;
  text-align: center;
}

/* 新作速递 */
.new-arrivals-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px 24px;
}

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

.new-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  transition: box-shadow var(--transition-base);
}

.new-item:hover {
  box-shadow: var(--shadow-sm);
}

.new-date {
  flex-shrink: 0;
  font-size: 13px;
  color: var(--color-text-lighter);
  line-height: 1.5;
  padding-top: 2px;
  min-width: 72px;
}

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

.new-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
  line-height: 1.5;
}

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

/* 阅读指南（首页三步） */
.guide-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px 24px;
}

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

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

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: rgba(14, 124, 123, 0.1);
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 12px;
  line-height: 1;
}

.step-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
  line-height: 1.5;
}

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

/* 延伸阅读 */
.extended-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px 64px;
}

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

.extended-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.extended-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.extended-card-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
  line-height: 1.5;
}

.extended-card-desc {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ========== 题材精选页 ========== */
.page-special-topic .topic-filter {
  margin-bottom: 40px;
}

.filter-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.filter-btn {
  display: inline-flex;
  align-items: center;
  padding: 8px 20px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  line-height: 1.6;
  min-height: 40px;
  transition: all var(--transition-base);
}

.filter-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

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

.topic-intro {
  margin-bottom: 40px;
}

.intro-paragraph {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 12px;
  max-width: 780px;
}

.intro-paragraph:last-child {
  margin-bottom: 0;
}

.grid-section {
  margin-bottom: 0;
}

.grid-hint {
  font-size: 14px;
  color: var(--color-text-lighter);
  margin-bottom: 20px;
}

/* ========== 人气榜单页 ========== */
.page-popular .page-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 32px;
  align-items: start;
}

.ranking-aside {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.aside-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 16px;
  line-height: 1.5;
}

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

.ranking-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
  cursor: pointer;
  transition: background-color var(--transition-base);
}

.ranking-item:last-child {
  border-bottom: none;
}

.ranking-item:hover {
  background-color: rgba(14, 124, 123, 0.04);
}

.ranking-item.is-active {
  background-color: rgba(14, 124, 123, 0.06);
}

.ranking-num {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text-lighter);
  min-width: 28px;
  text-align: center;
  line-height: 1.2;
}

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

.ranking-thumb {
  width: 48px;
  height: 64px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  background-color: var(--color-bg);
}

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

.ranking-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  line-height: 1.5;
  margin-bottom: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ranking-status {
  font-size: 12px;
  color: var(--color-text-lighter);
  line-height: 1.4;
}

.ranking-detail {
  min-width: 0;
}

.detail-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 28px;
}

.detail-cover-wrap {
  aspect-ratio: 3 / 4;
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-bg);
}

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

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

.detail-title {
  font-size: 22px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
  line-height: 1.4;
}

.detail-meta {
  font-size: 13px;
  color: var(--color-text-lighter);
  margin-bottom: 16px;
  line-height: 1.6;
}

.detail-desc {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 20px;
}

.detail-reason {
  background-color: var(--color-bg);
  border-left: 3px solid var(--color-primary);
  padding: 16px 20px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin-bottom: 20px;
}

.reason-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
  line-height: 1.5;
}

.detail-reason p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
}

.detail-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.ranking-note {
  margin-top: 32px;
  padding: 24px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.ranking-note .section-title {
  font-size: 18px;
  margin-bottom: 8px;
}

.ranking-note .section-desc {
  font-size: 14px;
  margin-bottom: 8px;
  color: var(--color-text-light);
  line-height: 1.7;
}

.ranking-note .section-desc:last-child {
  margin-bottom: 0;
}

.related-links-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  margin-right: 8px;
}

.related-links-item {
  display: inline-block;
  font-size: 14px;
  color: var(--color-primary);
  margin-right: 12px;
  line-height: 1.6;
}

/* ========== 新作速递页 ========== */
.timeline-section {
  margin-bottom: 0;
}

.timeline-list {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.timeline-list::before {
  content: '';
  position: absolute;
  left: 84px;
  top: 0;
  bottom: 0;
  width: 1px;
  background-color: var(--color-border);
}

.timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 84px 120px 1fr;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid var(--color-border);
}

.timeline-item:last-child {
  border-bottom: none;
}

.timeline-date {
  text-align: right;
  padding-top: 4px;
}

.date-day {
  display: block;
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.2;
}

.date-month {
  display: block;
  font-size: 13px;
  color: var(--color-text-lighter);
  line-height: 1.4;
}

.timeline-media {
  min-width: 0;
}

.timeline-figure {
  aspect-ratio: 3 / 4;
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-bg);
}

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

.timeline-content {
  min-width: 0;
  padding-top: 4px;
}

.timeline-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
  line-height: 1.5;
}

.timeline-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.status-tag {
  display: inline-block;
  padding: 2px 10px;
  font-size: 12px;
  border-radius: 999px;
  background-color: rgba(14, 124, 123, 0.1);
  color: var(--color-primary);
  font-weight: 500;
  line-height: 1.6;
}

.tag-type {
  display: inline-block;
  padding: 2px 10px;
  font-size: 12px;
  border-radius: 999px;
  background-color: var(--color-bg);
  color: var(--color-text-light);
  border: 1px solid var(--color-border);
  line-height: 1.6;
}

.timeline-desc {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 12px;
}

.editor-note {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.7;
  background-color: var(--color-bg);
  border-left: 3px solid var(--color-secondary);
  padding: 12px 16px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

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

.related-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.related-card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.5;
}

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

.text-link {
  font-size: 14px;
  color: var(--color-primary);
  font-weight: 500;
  align-self: flex-start;
  line-height: 1.6;
}

.feedback-note {
  margin-top: 48px;
  padding: 32px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-align: center;
}

.feedback-note .section-title {
  margin-bottom: 8px;
}

.feedback-note .section-intro {
  margin-bottom: 20px;
  margin-left: auto;
  margin-right: auto;
}

/* ========== 阅读指南页 ========== */
.page-guide .guide-steps {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-bottom: 48px;
}

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

.step-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: rgba(14, 124, 123, 0.1);
  color: var(--color-primary);
  font-size: 16px;
  font-weight: 700;
  line-height: 1;
  flex-shrink: 0;
}

.step-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.5;
}

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

.step-card p a {
  color: var(--color-primary);
  font-weight: 500;
}

.step-figure {
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-bg);
  margin-top: 8px;
}

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

.column-explanation {
  margin-bottom: 0;
}

.column-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background-color: var(--color-card);
}

.column-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.column-table th {
  background-color: var(--color-bg);
  font-weight: 600;
  color: var(--color-text);
  text-align: left;
  padding: 14px 20px;
  border-bottom: 1px solid var(--color-border);
  line-height: 1.5;
  white-space: nowrap;
}

.column-table td {
  padding: 14px 20px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-light);
  line-height: 1.7;
  vertical-align: top;
}

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

.column-table td:first-child {
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
}

/* ========== 版权说明页 ========== */
.layout-shell {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 24px 64px;
}

/* 默认（sidebar-right）：主内容在前，aside 在后 */
.layout-shell.sidebar-right .page-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 32px;
  align-items: start;
}

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

.main-content .breadcrumb {
  margin-bottom: 24px;
}

.main-content .page-header {
  margin-bottom: 32px;
}

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

.content-section .section-title {
  font-size: 22px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.section-body p {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 16px;
}

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

.content-media {
  margin: 16px 0 24px;
}

.content-media-inline {
  float: right;
  width: 280px;
  margin-left: 24px;
  margin-bottom: 16px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-bg);
}

.content-media-inline img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.content-media-inline figcaption {
  font-size: 12px;
  color: var(--color-text-lighter);
  text-align: center;
  padding: 8px;
  line-height: 1.5;
}

.source-list {
  list-style: disc;
  padding-left: 20px;
  margin: 12px 0 16px;
}

.source-list li {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 6px;
}

/* 侧栏卡片（版权页） */
.sidebar-card.feedback-entry .btn {
  width: 100%;
  margin-top: 4px;
}

/* ========== 意见反馈页 ========== */
.feedback-types {
  margin-bottom: 48px;
}

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

.type-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.type-name {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.5;
}

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

.type-example {
  font-size: 13px;
  color: var(--color-text-lighter);
  line-height: 1.6;
  background-color: var(--color-bg);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  margin-top: 4px;
}

.feedback-process {
  margin-bottom: 48px;
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}

.process-step {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* 限定作用域：首页 .guide-step 与反馈页 .process-step 的 .step-number 互不干扰 */
.process-step .step-number {
  background-color: rgba(20, 160, 133, 0.1);
  color: var(--color-secondary);
}

.process-step .step-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.5;
}

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

.process-illustration {
  max-width: 640px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
}

.process-illustration img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.process-illustration figcaption {
  font-size: 13px;
  color: var(--color-text-lighter);
  text-align: center;
  padding: 12px;
  line-height: 1.6;
}

.feedback-sidebar {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-top: 16px;
}

.sidebar-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 12px;
  line-height: 1.5;
}

.feedback-sidebar p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 12px;
}

.feedback-sidebar .sidebar-links {
  margin-bottom: 12px;
}

.sidebar-note {
  font-size: 13px;
  color: var(--color-text-lighter);
  margin-bottom: 0 !important;
  line-height: 1.6;
}

/* ========== 404 页 ========== */
.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - var(--header-height) - 320px);
  padding: 48px 24px;
}

.error-panel {
  max-width: 560px;
  text-align: center;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
}

.error-code {
  font-size: 72px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.1;
  margin-bottom: 16px;
}

.error-title {
  font-size: 24px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 12px;
  line-height: 1.4;
}

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

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-bottom: 20px;
}

.error-help {
  font-size: 14px;
  color: var(--color-text-lighter);
  line-height: 1.7;
}

.error-help a {
  color: var(--color-primary);
  font-weight: 500;
}

/* ============================================================
   5. Responsive —— 响应式断点
   ============================================================ */

/* 平板及以下 */
@media (max-width: 1024px) {
  .header-inner {
    padding: 0 20px;
  }

  .inner-main,
  .layout-shell {
    padding-left: 20px;
    padding-right: 20px;
  }

  .hero-content {
    gap: 32px;
    padding-left: 20px;
    padding-right: 20px;
  }

  .topic-nav-section,
  .popular-section,
  .new-arrivals-section,
  .guide-section,
  .extended-section {
    padding-left: 20px;
    padding-right: 20px;
  }

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

  .popular-list {
    grid-template-columns: repeat(3, 1fr);
  }

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

  .page-popular .page-layout {
    grid-template-columns: 280px 1fr;
    gap: 24px;
  }

  .detail-card {
    grid-template-columns: 200px 1fr;
    gap: 24px;
  }

  .timeline-item {
    grid-template-columns: 72px 100px 1fr;
    gap: 20px;
  }

  .timeline-list::before {
    left: 72px;
  }

  .layout-shell.sidebar-right .page-layout {
    grid-template-columns: 1fr 280px;
    gap: 24px;
  }

  .content-media-inline {
    width: 220px;
  }
}

/* 手机端 */
@media (max-width: 768px) {
  .header-inner {
    height: auto;
    min-height: var(--header-height);
    padding: 12px 16px;
    flex-wrap: wrap;
    gap: 8px;
  }

  .logo-area {
    flex: 1;
  }

  .logo-text {
    font-size: 20px;
  }

  .logo-slogan {
    display: none;
  }

  .nav-toggle {
    display: flex;
    flex-shrink: 0;
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .site-nav {
    width: 100%;
    flex-basis: 100%;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    padding: 8px 0 12px;
    gap: 2px;
  }

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

  .nav-list a {
    padding: 12px 8px;
    font-size: 15px;
    border-radius: var(--radius-sm);
  }

  /* 首页 */
  .hero-content {
    grid-template-columns: 1fr;
    padding: 40px 16px 32px;
    gap: 24px;
  }

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

  .hero-media {
    order: -1;
  }

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

  .topic-nav-section,
  .popular-section,
  .new-arrivals-section,
  .guide-section,
  .extended-section {
    padding: 40px 16px 16px;
  }

  .topic-nav-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .popular-list {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .popular-item {
    flex-direction: row;
    align-items: center;
  }

  .rank-cover {
    width: 64px;
    height: 84px;
    aspect-ratio: auto;
    flex-shrink: 0;
  }

  .rank-info {
    flex: 1;
  }

  .new-item {
    flex-direction: column;
    gap: 8px;
    padding: 16px;
  }

  .new-date {
    min-width: 0;
  }

  .guide-steps {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .extended-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .extended-section {
    padding-bottom: 40px;
  }

  /* 内页通用 */
  .inner-main,
  .layout-shell {
    padding: 24px 16px 48px;
  }

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

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

  .breadcrumb {
    margin-bottom: 16px;
    font-size: 13px;
  }

  /* 题材精选 */
  .filter-buttons {
    gap: 8px;
  }

  .filter-btn {
    padding: 8px 16px;
    font-size: 13px;
    min-height: 40px;
  }

  .cover-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .cover-card {
    flex-direction: row;
  }

  .cover-figure {
    width: 120px;
    height: 160px;
    aspect-ratio: auto;
    flex-shrink: 0;
  }

  .card-info {
    padding: 12px 16px;
  }

  /* 人气榜单 */
  .page-popular .page-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .ranking-aside {
    padding: 16px;
  }

  .ranking-item {
    padding: 8px 0;
  }

  .ranking-detail {
    order: -1;
  }

  .detail-card {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 20px;
  }

  .detail-cover-wrap {
    max-width: 200px;
  }

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

  .ranking-note {
    padding: 20px;
  }

  /* 新作速递 */
  .timeline-list::before {
    display: none;
  }

  .timeline-item {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 20px 0;
  }

  .timeline-date {
    text-align: left;
    display: flex;
    align-items: baseline;
    gap: 8px;
  }

  .date-day {
    font-size: 20px;
  }

  .timeline-media {
    max-width: 160px;
  }

  .related-card-list {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .feedback-note {
    padding: 24px 16px;
  }

  /* 阅读指南 */
  .steps-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .step-card {
    padding: 20px;
  }

  .column-table-wrap {
    border-radius: var(--radius-sm);
  }

  .column-table th,
  .column-table td {
    padding: 12px 14px;
    font-size: 13px;
  }

  /* 版权说明 */
  .layout-shell.sidebar-right .page-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .content-media-inline {
    float: none;
    width: 100%;
    margin: 16px 0;
  }

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

  /* 意见反馈 */
  .type-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .process-steps {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  /* 404 */
  .error-panel {
    padding: 32px 24px;
  }

  .error-code {
    font-size: 56px;
  }

  /* 页脚 */
  .footer-inner {
    padding: 32px 16px 24px;
  }

  .footer-links {
    grid-template-columns: 1fr;
    gap: 24px;
    margin-bottom: 24px;
  }

  .footer-brand {
    margin-bottom: 24px;
  }
}

/* 超小屏 */
@media (max-width: 390px) {
  .hero-title {
    font-size: 24px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .btn {
    padding: 10px 16px;
    font-size: 14px;
  }

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

  .detail-cover-wrap {
    max-width: 160px;
  }

  .timeline-media {
    max-width: 140px;
  }

  .error-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .error-actions .btn {
    width: 100%;
  }
}