/* ============================================================
   天堂漫画 · 全站样式表
   视觉方向：产品手册风 · 米白纸感 · 墨绿主色 · 暖橙点缀
   ============================================================ */

/* ============================================================
   1. Base — 变量、重置、全局基础
   ============================================================ */

:root {
  /* 色彩系统 */
  --color-bg: #f7f4ee;
  --color-primary: #24332e;
  --color-accent: #d98e4a;
  --color-card: #f0ebe0;
  --color-muted: #6b7470;
  --color-white: #ffffff;
  --color-border: #e3dccd;
  --color-border-dark: #cfc6b2;
  --color-text: #2a2f2c;
  --color-text-light: #5a625e;
  --color-code-bg: #ece7dc;

  /* 字体 */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "SF Mono", SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;

  /* 尺寸 */
  --container-width: 1200px;
  --container-padding: 24px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --header-h: 64px;

  /* 间距 */
  --space-xs: 6px;
  --space-sm: 12px;
  --space-md: 20px;
  --space-lg: 32px;
  --space-xl: 48px;
  --space-2xl: 64px;

  /* 阴影 */
  --shadow-sm: 0 1px 3px rgba(36, 51, 46, 0.08);
  --shadow-md: 0 2px 8px rgba(36, 51, 46, 0.1);
  --shadow-lg: 0 4px 16px rgba(36, 51, 46, 0.12);

  /* 过渡 */
  --transition: 0.2s ease;
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 15px;
  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;
}

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

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.35;
  color: var(--color-primary);
}

h1 {
  font-size: 28px;
}

h2 {
  font-size: 22px;
}

h3 {
  font-size: 17px;
}

p {
  margin-bottom: 12px;
}

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

/* ============================================================
   2. Layout — 全站布局骨架
   ============================================================ */

/* --- 站点主体 --- */
.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* --- 页头 --- */
.site-header {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  position: relative;
  z-index: 100;
}

.site-header.is-sticky {
  position: sticky;
  top: 0;
  box-shadow: var(--shadow-sm);
}

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

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

.brand-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.02em;
}

.brand-name::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  background-color: var(--color-accent);
  border-radius: 2px;
  margin-right: 10px;
  vertical-align: 2px;
}

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

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

.nav-list li {
  margin: 0;
}

.nav-link {
  display: block;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-light);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background-color var(--transition);
}

.nav-link:hover {
  color: var(--color-primary);
  background-color: var(--color-bg);
}

.nav-link.is-current {
  color: var(--color-primary);
  font-weight: 700;
  background-color: var(--color-card);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
}

.nav-toggle-line {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-primary);
  border-radius: 1px;
  transition: transform var(--transition), opacity var(--transition);
}

/* --- 主内容区 --- */
.site-main {
  flex: 1 0 auto;
}

.home-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

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

/* --- 面包屑 --- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 18px 0 4px;
  font-size: 13px;
  color: var(--color-muted);
}

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

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

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

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

/* --- 页面标题区 --- */
.page-header {
  padding: 18px 0 28px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-xl);
}

.page-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.page-description {
  font-size: 15px;
  color: var(--color-text-light);
  max-width: 720px;
  line-height: 1.7;
  margin-bottom: 0;
}

/* --- 页脚 --- */
.site-footer {
  background-color: var(--color-primary);
  color: rgba(255, 255, 255, 0.82);
  margin-top: var(--space-2xl);
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px var(--container-padding) 24px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-lg);
}

.footer-brand {
  padding-right: var(--space-lg);
}

.footer-logo {
  font-size: 18px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 10px;
}

.footer-logo::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  background-color: var(--color-accent);
  border-radius: 2px;
  margin-right: 10px;
  vertical-align: 2px;
}

.footer-desc {
  font-size: 13px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 0;
}

.footer-group h3 {
  font-size: 14px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 14px;
  letter-spacing: 0.02em;
}

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

.footer-group ul a {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 16px var(--container-padding);
  text-align: center;
}

.footer-bottom p {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 0;
}

/* --- 通用区块 --- */
.section-block {
  padding: var(--space-2xl) 0;
  border-bottom: 1px solid var(--color-border);
}

.section-block:last-child {
  border-bottom: none;
}

.section-head {
  margin-bottom: var(--space-lg);
}

.section-head h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.section-head h2::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 18px;
  background-color: var(--color-accent);
  border-radius: 2px;
  margin-right: 10px;
  vertical-align: -2px;
}

.section-desc {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: 0;
  max-width: 680px;
}

.section-more {
  margin-top: var(--space-lg);
  text-align: center;
}

.more-link {
  display: inline-block;
  padding: 9px 24px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-md);
  transition: all var(--transition);
}

.more-link:hover {
  border-color: var(--color-primary);
  background-color: var(--color-primary);
  color: #ffffff;
}

/* --- 页内章节标题 --- */
.section-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.section-title::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 18px;
  background-color: var(--color-accent);
  border-radius: 2px;
  margin-right: 10px;
  vertical-align: -2px;
}

/* --- 标签 --- */
.tag {
  display: inline-block;
  padding: 2px 10px;
  font-size: 12px;
  font-weight: 500;
  color: var(--color-primary);
  background-color: var(--color-card);
  border-radius: var(--radius-sm);
  line-height: 1.6;
}

/* --- 下一步入口卡片 --- */
.next-step {
  padding: var(--space-xl) 0 var(--space-2xl);
}

.next-step-card {
  background-color: var(--color-card);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-align: center;
}

.next-step-card p {
  font-size: 15px;
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

.next-step-links {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.link-arrow {
  display: inline-block;
  padding: 8px 20px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-md);
  background-color: var(--color-white);
  transition: all var(--transition);
}

.link-arrow::after {
  content: " →";
  color: var(--color-accent);
}

.link-arrow:hover {
  border-color: var(--color-primary);
  background-color: var(--color-primary);
  color: #ffffff;
}

.link-arrow:hover::after {
  color: var(--color-accent);
}

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

/* --- 页内目录 --- */
.page-toc {
  background-color: var(--color-card);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: var(--space-xl);
}

.page-toc ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
}

.page-toc li {
  font-size: 13px;
}

.page-toc li a {
  color: var(--color-text-light);
  transition: color var(--transition);
}

.page-toc li a:hover {
  color: var(--color-accent);
}

/* --- 编辑专题卡（首页） --- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

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

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

.feature-index {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--color-accent);
  background-color: var(--color-card);
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
}

.feature-card h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

.feature-desc {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 14px;
}

.feature-list {
  margin-bottom: 16px;
}

.feature-list li {
  font-size: 13px;
  color: var(--color-text-light);
  padding-left: 16px;
  position: relative;
  margin-bottom: 6px;
}

.feature-list li::before {
  content: "·";
  position: absolute;
  left: 4px;
  color: var(--color-accent);
  font-weight: 700;
}

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

.text-link::after {
  content: " →";
}

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

/* --- 首页步骤 --- */
.steps-wrapper {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.step-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  position: relative;
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: #ffffff;
  background-color: var(--color-primary);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
}

.step-content h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.step-content p {
  font-size: 13px;
  color: var(--color-text-light);
  margin-bottom: 0;
}

/* --- 相关链接（首页底部） --- */
.related-links {
  padding: var(--space-lg) 0 var(--space-xl);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.related-links-label {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-primary);
}

.related-links-item {
  font-size: 13px;
  color: var(--color-text-light);
  padding: 4px 12px;
  background-color: var(--color-card);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.related-links-item:hover {
  background-color: var(--color-primary);
  color: #ffffff;
}

/* ============================================================
   4. Pages — 首页
   ============================================================ */

/* --- 首屏操作面 --- */
.hero-split {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: var(--space-xl);
  padding: var(--space-xl) 0;
  align-items: stretch;
}

.hero-media {
  display: flex;
  flex-direction: column;
}

.hero-figure {
  flex: 1;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
}

.hero-figure img {
  width: 100%;
  height: 100%;
  min-height: 320px;
  object-fit: cover;
}

.hero-figure figcaption {
  padding: 12px 16px;
  font-size: 13px;
  color: var(--color-text-light);
  background-color: var(--color-white);
  border-top: 1px solid var(--color-border);
}

.hero-panel {
  display: flex;
  flex-direction: column;
  justify-content: center;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}

.hero-panel h1 {
  font-size: 28px;
  margin-bottom: 10px;
}

.hero-intro {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: var(--space-lg);
  line-height: 1.7;
}

.panel-actions {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm);
}

.action-card {
  display: flex;
  flex-direction: column;
  padding: 14px 16px;
  background-color: var(--color-card);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition: all var(--transition);
}

.action-card:hover {
  border-color: var(--color-primary);
  background-color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.action-index {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 6px;
}

.action-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.action-desc {
  font-size: 12px;
  color: var(--color-muted);
  line-height: 1.5;
}

/* --- 题材分类墙 --- */
.category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.category-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.category-card img {
  width: 100%;
  height: 140px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: 12px;
}

.category-card h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.category-card p {
  font-size: 13px;
  color: var(--color-text-light);
  margin-bottom: 0;
  line-height: 1.6;
}

/* --- 最近更新动态 --- */
.update-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.update-item {
  display: flex;
  gap: var(--space-md);
  padding: 16px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.update-item:hover {
  border-color: var(--color-border-dark);
  box-shadow: var(--shadow-sm);
}

.update-date {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-accent);
  padding-top: 2px;
  min-width: 64px;
}

.update-info h3 {
  font-size: 15px;
  margin-bottom: 4px;
}

.tag-list {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}

.tag-list .tag {
  font-size: 11px;
  padding: 1px 8px;
}

.update-desc {
  font-size: 13px;
  color: var(--color-text-light);
  margin-bottom: 0;
  line-height: 1.6;
}

/* --- 人气榜单预览 --- */
.ranking-duo {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

.ranking-group {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}

.ranking-group h3 {
  font-size: 16px;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-border);
}

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

.ranking-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition);
}

.ranking-list li:hover {
  background-color: var(--color-bg);
}

.rank-no {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-border-dark);
  min-width: 28px;
  text-align: center;
}

.ranking-list li:nth-child(1) .rank-no {
  color: var(--color-accent);
  font-size: 20px;
}

.ranking-list li:nth-child(2) .rank-no {
  color: var(--color-primary);
}

.ranking-list li:nth-child(3) .rank-no {
  color: var(--color-muted);
}

.ranking-list li a {
  flex: 1;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  transition: color var(--transition);
}

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

.rank-tag {
  font-size: 11px;
  color: var(--color-muted);
  background-color: var(--color-card);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

/* ============================================================
   5. Pages — 题材分类页
   ============================================================ */

/* --- 题材标签墙 --- */
.tag-wall {
  margin-bottom: var(--space-xl);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.tag-item {
  transition: transform var(--transition);
}

.tag-item:hover {
  transform: translateY(-2px);
}

.tag-item a {
  display: flex;
  align-items: center;
  gap: 10px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 6px 14px 6px 6px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.tag-item a:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.tag-item img {
  width: 36px;
  height: 36px;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.tag-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text);
}

/* --- 题材板块 --- */
.category-sections {
  margin-bottom: var(--space-xl);
}

.category-block {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-lg);
  overflow: hidden;
}

.category-block-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 18px 24px;
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-card);
}

.category-block-header h3 {
  font-size: 18px;
  margin-bottom: 0;
}

.category-code {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-muted);
  margin-bottom: 0;
}

.cover-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
}

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

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

.cover-card img {
  width: 100%;
  height: 160px;
  object-fit: cover;
}

.cover-card figcaption {
  padding: 8px 12px;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text);
  background-color: var(--color-white);
}

.category-info {
  padding: 0 var(--space-lg) var(--space-lg);
}

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

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

.work-list li a {
  display: block;
  padding: 6px 12px;
  font-size: 13px;
  color: var(--color-text);
  background-color: var(--color-bg);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.work-list li a:hover {
  background-color: var(--color-primary);
  color: #ffffff;
}

/* --- 题材归类说明 --- */
.comparison-note {
  background-color: var(--color-card);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  margin-bottom: var(--space-xl);
}

.comparison-note p {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 0;
  line-height: 1.8;
}

/* --- 分类页下一步 --- */
.next-step {
  padding-top: var(--space-md);
}

.next-step-label {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: var(--space-sm);
}

.next-step-links {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.next-link {
  display: inline-block;
  padding: 8px 20px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-md);
  transition: all var(--transition);
}

.next-link:hover {
  border-color: var(--color-primary);
  background-color: var(--color-primary);
  color: #ffffff;
}

/* ============================================================
   6. Pages — 最近更新页
   ============================================================ */

.timeline-section {
  margin-bottom: var(--space-xl);
}

/* 时间线布局：左侧日期轴，右侧条目 */
.timeline {
  position: relative;
  padding-left: 24px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 0;
  bottom: 0;
  width: 2px;
  background-color: var(--color-border);
}

.timeline-group {
  position: relative;
  margin-bottom: var(--space-lg);
}

.timeline-group::before {
  content: "";
  position: absolute;
  left: -22px;
  top: 8px;
  width: 10px;
  height: 10px;
  background-color: var(--color-accent);
  border-radius: 50%;
  border: 2px solid var(--color-bg);
}

.timeline-date {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  background-color: var(--color-primary);
  color: #ffffff;
  padding: 4px 14px;
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
}

.date-day {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.2;
}

.date-month {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.75);
}

.timeline-items {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.update-card {
  display: flex;
  gap: var(--space-md);
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 14px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.update-card:hover {
  border-color: var(--color-border-dark);
  box-shadow: var(--shadow-sm);
}

.update-card-media {
  flex-shrink: 0;
  width: 96px;
  height: 128px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background-color: var(--color-card);
}

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

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

.update-card-body h3 {
  font-size: 15px;
  margin-bottom: 6px;
}

.update-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.update-tags .tag {
  font-size: 11px;
  padding: 1px 8px;
}

.update-desc {
  font-size: 13px;
  color: var(--color-text-light);
  margin-bottom: 0;
  line-height: 1.6;
}

.update-note-section {
  margin-bottom: var(--space-xl);
}

.note-content {
  background-color: var(--color-card);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
}

.note-content p {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 10px;
  line-height: 1.7;
}

.note-content p:last-child {
  margin-bottom: 0;
}

/* ============================================================
   7. Pages — 人气榜单页
   ============================================================ */

/* --- 榜首作品展示区 --- */
.top-spot {
  margin-bottom: var(--space-xl);
}

.top-spot-inner {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-lg);
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.top-spot-media {
  background-color: var(--color-card);
}

.top-spot-figure {
  height: 100%;
}

.top-spot-figure img {
  width: 100%;
  height: 100%;
  min-height: 300px;
  object-fit: cover;
}

.top-spot-info {
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.top-spot-rank {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.top-spot-title {
  font-size: 24px;
  margin-bottom: 10px;
}

.top-spot-tags {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
}

.top-spot-tags .tag {
  font-size: 12px;
}

.top-spot-desc {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 0;
}

/* --- 页签切换 --- */
.rank-tabs {
  margin-bottom: var(--space-xl);
}

.tab-switcher {
  display: flex;
  gap: 0;
  margin-bottom: var(--space-lg);
  border-bottom: 2px solid var(--color-border);
}

.tab-button {
  background: none;
  border: none;
  padding: 12px 24px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: all var(--transition);
  min-height: 44px;
}

.tab-button:hover {
  color: var(--color-primary);
}

.tab-button.is-active {
  color: var(--color-primary);
  font-weight: 700;
  border-bottom-color: var(--color-accent);
}

.tab-panel[hidden] {
  display: none;
}

/* --- 榜单条目 --- */
.ranking-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: 12px 16px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 10px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.ranking-item:hover {
  border-color: var(--color-border-dark);
  box-shadow: var(--shadow-sm);
}

.rank-num {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-border-dark);
  min-width: 36px;
  text-align: center;
  flex-shrink: 0;
}

.ranking-item:nth-child(1) .rank-num {
  color: var(--color-accent);
  font-size: 24px;
}

.ranking-item:nth-child(2) .rank-num {
  color: var(--color-primary);
  font-size: 22px;
}

.ranking-item:nth-child(3) .rank-num {
  color: var(--color-muted);
  font-size: 20px;
}

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

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

.rank-title {
  font-size: 15px;
  margin-bottom: 4px;
}

.rank-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 4px;
}

.rank-tags .tag {
  font-size: 11px;
  padding: 1px 8px;
}

.rank-note {
  font-size: 13px;
  color: var(--color-text-light);
  margin-bottom: 0;
  line-height: 1.6;
}

/* --- 榜单说明与下一步 --- */
.ranking-note {
  background-color: var(--color-card);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  margin-bottom: var(--space-xl);
}

.ranking-note p {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 10px;
  line-height: 1.7;
}

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

/* ============================================================
   8. Pages — 编辑专题页
   ============================================================ */

.editorial-list {
  margin-bottom: var(--space-xl);
}

.editorial-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-lg);
  overflow: hidden;
}

.editorial-card-head {
  padding: var(--space-md) var(--space-lg);
  background-color: var(--color-card);
  border-bottom: 1px solid var(--color-border);
}

.editorial-number {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--color-accent);
  background-color: var(--color-white);
  padding: 2px 10px;
  border-radius: var(--radius-sm);
  display: inline-block;
  margin-bottom: 8px;
}

.editorial-name {
  font-size: 18px;
  margin-bottom: 8px;
}

.editorial-desc {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 0;
}

.editorial-works {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  padding: var(--space-lg);
}

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

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

.work-cover {
  background-color: var(--color-card);
}

.work-cover img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.work-info {
  padding: 12px 14px;
  background-color: var(--color-white);
}

.work-title {
  font-size: 14px;
  margin-bottom: 4px;
}

.work-tag {
  display: inline-block;
  font-size: 11px;
  color: var(--color-muted);
  background-color: var(--color-card);
  padding: 1px 8px;
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
}

.work-desc {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: 0;
}

/* ============================================================
   9. Pages — 阅读指南页
   ============================================================ */

.step-section {
  margin-bottom: var(--space-xl);
}

.guide-step {
  display: flex;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}

.step-number {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  color: #ffffff;
  background-color: var(--color-primary);
  border-radius: var(--radius-sm);
}

.step-content {
  flex: 1;
  min-width: 0;
}

.step-content h3 {
  font-size: 17px;
  margin-bottom: 12px;
}

.step-detail {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.step-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 2px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.step-detail p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 0;
}

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

.step-detail p a:hover {
  color: var(--color-primary);
}

/* --- 指南配图 --- */
.guide-media {
  margin: var(--space-xl) 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.guide-media img {
  width: 100%;
  max-height: 280px;
  object-fit: cover;
}

.guide-media figcaption {
  padding: 10px 16px;
  font-size: 13px;
  color: var(--color-muted);
  background-color: var(--color-white);
}

/* --- 常见疑问 --- */
.faq-list {
  margin-bottom: var(--space-xl);
}

.faq-item {
  background-color: var(--color-white);
  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: 600;
  color: var(--color-primary);
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 40px;
  transition: background-color var(--transition);
  min-height: 44px;
  display: flex;
  align-items: center;
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  font-weight: 400;
  color: var(--color-accent);
  transition: transform var(--transition);
}

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

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

.faq-item p {
  padding: 0 18px 16px;
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 0;
  border-top: 1px solid var(--color-border);
  padding-top: 14px;
}

/* --- 指南页下一步 --- */
.step-link {
  display: inline-block;
  padding: 10px 24px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-md);
  margin-right: 10px;
  margin-bottom: 8px;
  transition: all var(--transition);
}

.step-link:hover {
  border-color: var(--color-primary);
  background-color: var(--color-primary);
  color: #ffffff;
}

/* ============================================================
   10. Pages — 站点说明页
   ============================================================ */

.qa-section {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-lg);
  overflow: hidden;
}

.section-heading {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 16px 20px;
  background-color: var(--color-card);
  border-bottom: 1px solid var(--color-border);
}

.section-no {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-accent);
}

.section-heading h2 {
  font-size: 17px;
  margin-bottom: 0;
}

.qa-content {
  padding: var(--space-md) var(--space-lg);
}

.qa-content p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 10px;
}

.qa-content p:last-child {
  margin-bottom: 0;
}

/* --- 内容组织示例图 --- */
.content-example {
  margin: var(--space-lg) 0 var(--space-xl);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  background-color: var(--color-white);
}

.content-example img {
  width: 100%;
  max-height: 300px;
  object-fit: cover;
}

.content-example figcaption {
  padding: 10px 16px;
  font-size: 13px;
  color: var(--color-muted);
  border-top: 1px solid var(--color-border);
}

/* ============================================================
   11. Pages — 404 错误页
   ============================================================ */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  padding: var(--space-xl) var(--container-padding);
}

.error-panel {
  max-width: 560px;
  width: 100%;
  text-align: center;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-lg);
}

.error-panel h1 {
  font-size: 64px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-md);
}

.error-lead {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.error-desc {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: var(--space-lg);
}

.error-home-link {
  display: inline-block;
  padding: 10px 28px;
  font-size: 14px;
  font-weight: 600;
  color: #ffffff;
  background-color: var(--color-primary);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-lg);
  transition: background-color var(--transition);
}

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

.error-suggest {
  text-align: left;
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-md);
}

.error-suggest h2 {
  font-size: 15px;
  margin-bottom: 10px;
}

.error-suggest ul li {
  margin-bottom: 6px;
}

.error-suggest ul a {
  font-size: 14px;
  color: var(--color-accent);
}

.error-suggest ul a:hover {
  color: var(--color-primary);
}

/* ============================================================
   12. Responsive — 响应式
   ============================================================ */

/* --- 平板 1024px --- */
@media (max-width: 1024px) {
  :root {
    --container-padding: 20px;
  }

  .footer-inner {
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: var(--space-md);
  }

  .footer-brand {
    grid-column: 1 / -1;
    padding-right: 0;
    margin-bottom: var(--space-sm);
  }

  .hero-split {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .hero-figure img {
    min-height: 240px;
    max-height: 360px;
  }

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

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

  .top-spot-figure img {
    min-height: 220px;
    max-height: 320px;
  }
}

/* --- 移动端 768px --- */
@media (max-width: 768px) {
  :root {
    --container-padding: 16px;
    --header-h: 56px;
  }

  /* 页头与导航 */
  .header-inner {
    height: var(--header-h);
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: static;
  }

  .nav-list {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 0;
    z-index: 99;
  }

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

  .nav-list li {
    border-bottom: 1px solid var(--color-border);
  }

  .nav-list li:last-child {
    border-bottom: none;
  }

  .nav-link {
    padding: 12px 20px;
    border-radius: 0;
    font-size: 15px;
  }

  .nav-link.is-current {
    background-color: var(--color-card);
  }

  /* 首页布局 */
  .hero-split {
    padding: var(--space-lg) 0;
  }

  /* 移动端：操作面板先展示，热点封面在后 */
  .hero-panel {
    order: 1;
  }

  .hero-media {
    order: 2;
  }

  .hero-panel h1 {
    font-size: 24px;
  }

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

  /* 区块间距 */
  .section-block {
    padding: var(--space-xl) 0;
  }

  /* 分类墙 */
  .category-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
  }

  .category-card img {
    height: 120px;
  }

  /* 榜单 */
  .ranking-duo {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  /* 专题 */
  .feature-grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  /* 步骤 */
  .steps-wrapper {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  /* 编辑专题作品卡 */
  .editorial-works {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
    padding: var(--space-md);
  }

  .work-cover img {
    height: 150px;
  }

  /* 分类页 */
  .cover-row {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-sm);
    padding: var(--space-sm);
    overflow-x: auto;
  }

  .cover-card img {
    height: 130px;
  }

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

  .category-block-header {
    padding: 14px 16px;
  }

  .category-info {
    padding: 0 var(--space-md) var(--space-md);
  }

  /* 更新页 */
  .timeline {
    padding-left: 18px;
  }

  .timeline-group::before {
    left: -18px;
  }

  .update-card {
    flex-direction: column;
  }

  .update-card-media {
    width: 100%;
    height: 160px;
  }

  /* 榜单页 */
  .tab-button {
    padding: 10px 16px;
    font-size: 14px;
  }

  .ranking-item {
    padding: 10px 12px;
    gap: var(--space-sm);
  }

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

  .rank-num {
    font-size: 16px;
    min-width: 28px;
  }

  /* 指南页 */
  .guide-step {
    flex-direction: column;
    gap: var(--space-sm);
    padding: var(--space-md);
  }

  .step-number {
    width: 36px;
    height: 36px;
    font-size: 14px;
  }

  .step-detail {
    grid-template-columns: 1fr;
  }

  /* 页脚 */
  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
    padding: 32px var(--container-padding) 16px;
  }

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

  .footer-bottom {
    padding: 12px var(--container-padding);
  }

  /* 面包屑 */
  .breadcrumb {
    padding-top: 14px;
  }

  .page-header {
    padding: 14px 0 20px;
    margin-bottom: var(--space-lg);
  }

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

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

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

  .category-card {
    display: flex;
    gap: var(--space-sm);
    align-items: center;
  }

  .category-card img {
    width: 80px;
    height: 80px;
    margin-bottom: 0;
    flex-shrink: 0;
  }

  .category-card h3 {
    margin-bottom: 4px;
  }

  .editorial-works {
    grid-template-columns: 1fr;
  }

  .work-cover img {
    height: 180px;
  }

  .cover-row {
    grid-template-columns: repeat(3, 1fr);
    overflow-x: auto;
  }

  .cover-card {
    min-width: 120px;
  }

  .cover-card img {
    height: 140px;
  }

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

  .timeline-items {
    gap: 8px;
  }

  .update-card-media {
    height: 140px;
  }

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

  .rank-info {
    flex: 1 1 calc(100% - 90px);
  }

  .top-spot-info {
    padding: var(--space-md);
  }

  .top-spot-title {
    font-size: 20px;
  }

  .tab-button {
    flex: 1;
    text-align: center;
    padding: 10px 8px;
  }

  .tab-switcher {
    gap: 0;
  }

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

  .footer-brand {
    padding-right: 0;
  }

  .next-step-links {
    flex-direction: column;
    align-items: stretch;
  }

  .link-arrow,
  .next-link,
  .step-link {
    text-align: center;
  }

  .error-panel {
    padding: var(--space-lg) var(--space-md);
  }

  .error-panel h1 {
    font-size: 48px;
  }
}