/* ==========================================================================
   天堂漫画 · 全站样式表
   文件：assets/css/style.css
   说明：本文件为 cgtkzck.cn 全站唯一样式表，覆盖首页、全部内页与 404 页。
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* ==========================================================================
   base — 基础变量、重置、字体与全局元素
   ========================================================================== */

:root {
  /* 自然科普风配色 */
  --color-primary: #3e7a5e;        /* 森林绿 */
  --color-primary-dark: #2f5f48;
  --color-primary-light: #e8f0eb;
  --color-sky: #5a8fbf;            /* 天空蓝 */
  --color-earth: #8b6f4d;          /* 泥土棕 */
  --color-coral: #c96f5a;          /* 珊瑚红 */
  --color-mustard: #b8a14e;        /* 芥末黄 */
  --color-white: #ffffff;
  --color-bg: #ffffff;
  --color-bg-light: #f4f4f0;       /* 浅灰 */
  --color-text: #2b2b2b;           /* 墨黑 */
  --color-text-light: #5c5c5c;
  --color-border: #e4e4de;
  --color-border-dark: #d0d0c8;

  /* 题材分类色 */
  --genre-warm: #d97b5f;           /* 热血 */
  --genre-rose: #c96f8a;           /* 恋爱 */
  --genre-slate: #5a7a8f;          /* 悬疑 */
  --genre-violet: #7a6f9e;         /* 奇幻 */
  --genre-sand: #b8a14e;           /* 日常 */
  --genre-cyan: #4f9e9e;           /* 科幻 */

  /* 字体与排版 */
  --font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-size-base: 16px;
  --line-height-base: 1.7;
  --font-size-h1: 28px;
  --font-size-h2: 22px;
  --font-size-h3: 18px;
  --font-weight-title: 700;
  --font-weight-normal: 400;
  --font-size-small: 12px;

  /* 布局 */
  --container-width: 1200px;
  --container-padding: 24px;
  --border-radius: 8px;
  --border-radius-sm: 6px;
  --shadow-card: 0 1px 4px rgba(43, 43, 43, 0.06);
  --shadow-card-hover: 0 4px 12px rgba(43, 43, 43, 0.1);
  --transition-base: 0.2s ease;
}

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

html {
  font-size: var(--font-size-base);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text);
  background-color: var(--color-bg);
}

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

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

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

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4 {
  font-weight: var(--font-weight-title);
  line-height: 1.4;
  color: var(--color-text);
}

h1 {
  font-size: var(--font-size-h1);
}

h2 {
  font-size: var(--font-size-h2);
}

h3 {
  font-size: var(--font-size-h3);
}

p {
  margin-bottom: 0.8em;
}

/* 通用容器 */
.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--color-bg);
}

/* ==========================================================================
   layout — 页头、导航、页脚、面包屑、主容器
   ========================================================================== */

/* ---------- 页头 ---------- */

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

.header-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  gap: 20px;
}

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

.brand-name {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
}

.brand-slogan {
  font-size: var(--font-size-small);
  color: var(--color-text-light);
  line-height: 1.4;
}

/* ---------- 主导航 ---------- */

.site-nav {
  position: static;
}

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

.nav-item {
  position: relative;
}

.nav-link {
  display: block;
  padding: 10px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--border-radius-sm);
  transition: background-color var(--transition-base), color var(--transition-base);
}

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

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

/* 子菜单 */
.has-submenu .submenu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-card-hover);
  padding: 8px 0;
  z-index: 200;
}

.has-submenu:hover .submenu {
  display: block;
}

.submenu li a {
  display: block;
  padding: 8px 16px;
  font-size: 14px;
  color: var(--color-text);
}

.submenu li a:hover {
  color: var(--color-primary);
  background-color: var(--color-bg-light);
}

/* 汉堡按钮（桌面隐藏） */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  cursor: pointer;
}

.nav-toggle-line {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 1px;
}

/* ---------- 面包屑 ---------- */

.breadcrumb {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 16px var(--container-padding) 0;
  font-size: 14px;
  color: var(--color-text-light);
}

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

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

.breadcrumb-sep {
  margin: 0 8px;
  color: var(--color-border-dark);
}

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

/* ---------- 主容器 ---------- */

.site-main {
  flex: 1;
  width: 100%;
}

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

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

/* ---------- 页面标题区（内页统一） ---------- */

.page-header {
  background-color: var(--color-bg-light);
  border-radius: var(--border-radius);
  padding: 28px 32px;
  margin: 24px 0 32px;
}

.page-title {
  font-size: var(--font-size-h1);
  color: var(--color-text);
  margin-bottom: 8px;
}

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

/* ---------- 页脚 ---------- */

.site-footer {
  background-color: var(--color-bg-light);
  border-top: 1px solid var(--color-border);
  margin-top: auto;
}

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

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

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

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

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

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

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

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

/* ==========================================================================
   components — 通用组件：封面卡、条目卡、折叠、摘要框、关联词、流程步骤
   ========================================================================== */

/* ---------- 通用卡片 ---------- */

.genre-card,
.method-card,
.review-item,
.scope-card,
.frequency-card,
.copyright-card,
.next-link-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.genre-card:hover,
.method-card:hover,
.review-item:hover,
.scope-card:hover,
.frequency-card:hover,
.copyright-card:hover,
.next-link-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
}

/* ---------- 折叠问答 ---------- */

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  background-color: var(--color-white);
  margin-bottom: 12px;
}

.faq-item summary {
  padding: 16px 20px;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

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

.faq-item summary::after {
  content: '+';
  font-size: 20px;
  color: var(--color-primary);
  flex-shrink: 0;
  transition: transform var(--transition-base);
}

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

.faq-item[open] summary {
  border-bottom: 1px solid var(--color-border);
}

.faq-item .faq-answer,
.faq-item p {
  padding: 16px 20px;
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.7;
}

.faq-item .faq-answer p {
  padding: 0;
}

.faq-item .faq-answer a {
  font-weight: 500;
}

/* ---------- 摘要框 ---------- */

.summary-box {
  background-color: var(--color-bg-light);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--border-radius);
  padding: 24px 28px;
  margin-bottom: 40px;
}

.site-positioning {
  font-size: 16px;
  color: var(--color-text);
  line-height: 1.8;
  margin-bottom: 16px;
}

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

.action-btn {
  display: inline-block;
  padding: 10px 22px;
  background-color: var(--color-primary);
  color: var(--color-white);
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--border-radius-sm);
  transition: background-color var(--transition-base);
}

.action-btn:hover {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
}

/* ---------- 关联词列表 ---------- */

.related-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag-link {
  display: inline-block;
  padding: 6px 16px;
  font-size: 14px;
  color: var(--color-text);
  background-color: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  transition: all var(--transition-base);
}

.tag-link:hover {
  color: var(--color-white);
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

/* ---------- 相关链接卡片 ---------- */

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

.next-link-card {
  display: block;
  padding: 20px;
  border-radius: var(--border-radius);
}

.next-link-name {
  display: block;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.next-link-desc {
  display: block;
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ---------- 流程步骤条 ---------- */

.path-step-list,
.process-steps {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.path-step,
.process-step {
  display: flex;
  gap: 20px;
  padding: 24px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
}

.step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  background-color: var(--color-primary);
  color: var(--color-white);
  font-size: 16px;
  font-weight: 700;
  border-radius: 50%;
}

.step-content {
  flex: 1;
}

.step-content h3 {
  font-size: 18px;
  margin-bottom: 6px;
}

.step-content p {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 8px;
}

.step-link {
  font-size: 14px;
  font-weight: 500;
}

/* ---------- 关联词导航（内页底部） ---------- */

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

.related-links h2 {
  font-size: 18px;
  margin-bottom: 16px;
}

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

.related-list li a {
  display: inline-block;
  padding: 8px 20px;
  font-size: 14px;
  color: var(--color-text);
  background-color: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  transition: all var(--transition-base);
}

.related-list li a:hover {
  color: var(--color-white);
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

/* ---------- 目录 ---------- */

.toc {
  margin-bottom: 48px;
}

.toc-title {
  font-size: 20px;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-primary);
}

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

.toc-item {
  background-color: var(--color-bg-light);
  border-radius: var(--border-radius);
  padding: 20px;
  transition: background-color var(--transition-base);
}

.toc-item:hover {
  background-color: var(--color-primary-light);
}

.toc-item a {
  display: block;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.toc-desc {
  display: block;
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ---------- 章节标题 ---------- */

.section-title {
  font-size: var(--font-size-h2);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-primary);
}

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

/* ---------- 导语区（内页通用） ---------- */

.intro-block,
.intro-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
  margin-bottom: 48px;
}

.intro-text,
.intro-copy {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.8;
}

.intro-text h2,
.intro-copy h2 {
  font-size: 20px;
  color: var(--color-text);
  margin-bottom: 12px;
}

.intro-media,
.intro-figure {
  border-radius: var(--border-radius);
  overflow: hidden;
  background-color: var(--color-bg-light);
}

.intro-media img,
.intro-figure img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

.intro-media figcaption,
.intro-figure figcaption {
  padding: 10px 16px;
  font-size: 13px;
  color: var(--color-text-light);
  background-color: var(--color-bg-light);
  text-align: center;
}

/* ==========================================================================
   pages — 首页
   ========================================================================== */

/* ---------- 首屏：重点卡 + 最近更新 ---------- */

.hero-list {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
  margin-bottom: 40px;
  padding-top: 24px;
}

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

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

.feature-card-link {
  display: block;
  height: 100%;
}

.feature-media {
  overflow: hidden;
}

.feature-image {
  width: 100%;
  height: 320px;
  object-fit: cover;
}

.feature-content {
  padding: 24px 28px;
}

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

.feature-desc {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 12px;
}

.feature-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
}

.recent-list {
  background-color: var(--color-bg-light);
  border-radius: var(--border-radius);
  padding: 24px;
}

.recent-heading {
  font-size: 16px;
  color: var(--color-text);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-border);
}

.recent-items {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.recent-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px;
  border-radius: var(--border-radius-sm);
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.recent-link:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-card);
}

.recent-thumb {
  width: 56px;
  height: 56px;
  flex-shrink: 0;
  border-radius: var(--border-radius-sm);
  background-color: var(--color-primary-light);
}

.recent-text {
  font-size: 14px;
  color: var(--color-text);
  line-height: 1.5;
  font-weight: 500;
}

/* ---------- 题材谱系条目区 ---------- */

.genre-grid {
  margin-bottom: 48px;
}

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

.genre-card {
  overflow: hidden;
}

.genre-link {
  display: block;
  height: 100%;
}

.genre-thumb {
  overflow: hidden;
}

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

.genre-color-block {
  height: 80px;
}

.color-suspense {
  background-color: var(--genre-slate);
}

.color-fantasy {
  background-color: var(--genre-violet);
}

.color-daily {
  background-color: var(--genre-sand);
}

.color-scifi {
  background-color: var(--genre-cyan);
}

.genre-name {
  font-size: 18px;
  color: var(--color-text);
  padding: 16px 20px 4px;
}

.genre-desc {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.6;
  padding: 0 20px 20px;
}

/* ---------- 阅读方法与追更日程双栏 ---------- */

.method-schedule {
  margin-bottom: 48px;
}

.two-col-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.col {
  background-color: var(--color-bg-light);
  border-radius: var(--border-radius);
  padding: 28px;
}

.col-title {
  font-size: 18px;
  color: var(--color-text);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-border);
}

.method-list,
.schedule-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.method-list li,
.schedule-list li {
  padding: 12px 16px;
  background-color: var(--color-white);
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--color-border);
}

.method-list a,
.schedule-list a {
  display: block;
  font-size: 15px;
  color: var(--color-text);
  font-weight: 500;
  line-height: 1.6;
}

.method-list a:hover,
.schedule-list a:hover {
  color: var(--color-primary);
}

/* ---------- 问题一答折叠摘要 ---------- */

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

.faq-preview .faq-item p {
  padding: 0 20px 16px;
  font-size: 15px;
  color: var(--color-text-light);
}

.faq-preview .faq-item p a {
  font-weight: 500;
}

/* ---------- 投稿提示带 ---------- */

.contribute-tip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  background-color: var(--color-primary-light);
  border: 1px solid var(--color-primary);
  border-radius: var(--border-radius);
  padding: 20px 28px;
  margin-bottom: 48px;
}

.tip-text {
  font-size: 15px;
  color: var(--color-text);
  margin: 0;
  line-height: 1.6;
}

.tip-link {
  flex-shrink: 0;
  padding: 10px 24px;
  background-color: var(--color-primary);
  color: var(--color-white);
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--border-radius-sm);
  transition: background-color var(--transition-base);
}

.tip-link:hover {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
}

/* ==========================================================================
   pages — 入门必修（rumenbixiu）
   ========================================================================== */

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

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

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

.concept-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 20px;
}

.concept-term {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 6px;
}

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

.next-links {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

.next-title {
  font-size: 18px;
  margin-bottom: 20px;
}

/* ==========================================================================
   pages — 题材谱系（ticaipu）
   ========================================================================== */

.genre-list-section {
  margin-bottom: 48px;
}

.genre-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.genre-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.genre-color-bar {
  height: 6px;
  flex-shrink: 0;
}

.genre-warm .genre-color-bar {
  background-color: var(--genre-warm);
}

.genre-rose .genre-color-bar {
  background-color: var(--genre-rose);
}

.genre-slate .genre-color-bar {
  background-color: var(--genre-slate);
}

.genre-violet .genre-color-bar {
  background-color: var(--genre-violet);
}

.genre-sand .genre-color-bar {
  background-color: var(--genre-sand);
}

.genre-cyan .genre-color-bar {
  background-color: var(--genre-cyan);
}

.genre-body {
  padding: 20px 24px 24px;
  flex: 1;
}

.genre-body h3 {
  font-size: 20px;
  color: var(--color-text);
  margin-bottom: 12px;
}

.genre-body p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 8px;
}

.genre-body .genre-feature {
  color: var(--color-text);
}

/* ---------- 对比工具 ---------- */

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

.compare-panel {
  background-color: var(--color-bg-light);
  border-radius: var(--border-radius);
  padding: 24px;
}

.compare-selector {
  margin-bottom: 24px;
}

.compare-hint {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 12px;
}

.compare-options {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.compare-option {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  cursor: pointer;
  font-size: 14px;
  color: var(--color-text);
  transition: all var(--transition-base);
}

.compare-option:hover {
  border-color: var(--color-primary);
}

.compare-option input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--color-primary);
}

.compare-result {
  min-height: 120px;
}

.compare-empty {
  font-size: 15px;
  color: var(--color-text-light);
  text-align: center;
  padding: 40px 0;
}

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

.compare-column {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 20px;
}

.compare-column h3 {
  font-size: 18px;
  color: var(--color-primary);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.compare-column p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 8px;
}

.compare-limit-msg {
  margin-top: 16px;
  padding: 12px 16px;
  background-color: #fdf3f0;
  border: 1px solid var(--color-coral);
  border-radius: var(--border-radius-sm);
  font-size: 14px;
  color: var(--color-coral);
}

.compare-limit-msg[hidden] {
  display: none;
}

/* ---------- 关联词导航 ---------- */

.related-section {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

.related-desc {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 16px;
}

.next-links p {
  font-size: 14px;
  color: var(--color-text-light);
  margin: 16px 0 8px;
}

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

.next-links ul li a {
  display: inline-block;
  padding: 8px 20px;
  font-size: 14px;
  color: var(--color-text);
  background-color: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  transition: all var(--transition-base);
}

.next-links ul li a:hover {
  color: var(--color-white);
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

/* ==========================================================================
   pages — 阅读手记（yuedushouji）
   ========================================================================== */

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

.method-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.method-card {
  padding: 24px;
}

.method-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 700;
  border-radius: 50%;
  margin-bottom: 12px;
}

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

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

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

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

.review-item {
  padding: 24px;
}

.review-tag {
  display: inline-block;
  padding: 4px 12px;
  background-color: var(--color-sky);
  color: var(--color-white);
  font-size: 12px;
  border-radius: 12px;
  margin-bottom: 12px;
}

.review-item h3 {
  font-size: 16px;
  margin-bottom: 8px;
}

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

/* ==========================================================================
   pages — 追更日程（zhuigengricheng）
   ========================================================================== */

.layout-split {
  align-items: start;
}

.week-schedule {
  margin-bottom: 48px;
}

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

.day-group {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 20px 24px;
  border-left: 4px solid var(--color-primary);
}

.day-title {
  font-size: 17px;
  color: var(--color-primary);
  margin-bottom: 8px;
}

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

.update-frequency {
  margin-bottom: 48px;
}

.frequency-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.frequency-card {
  padding: 24px;
}

.frequency-name {
  font-size: 17px;
  color: var(--color-text);
  margin-bottom: 8px;
}

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

/* ==========================================================================
   pages — 问题一答（wentiyida）
   ========================================================================== */

.faq-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
  margin-bottom: 48px;
}

.faq-intro-text {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.8;
}

.faq-intro-text h2 {
  font-size: 20px;
  color: var(--color-text);
  margin-bottom: 12px;
}

.faq-intro-media {
  border-radius: var(--border-radius);
  overflow: hidden;
}

.faq-intro-media img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

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

.faq-list {
  max-width: 860px;
}

.faq-list .faq-item summary {
  font-size: 16px;
}

.faq-list .faq-item .faq-answer p {
  font-size: 15px;
  color: var(--color-text-light);
}

/* ==========================================================================
   pages — 投稿交流（tougaojiaoliu）
   ========================================================================== */

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

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

.scope-card {
  padding: 24px;
}

.scope-name {
  font-size: 17px;
  color: var(--color-text);
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-primary);
}

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

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

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

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

.check-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 20px;
}

.check-item h3 {
  font-size: 15px;
  color: var(--color-primary);
  margin-bottom: 6px;
}

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

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

.copyright-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 20px;
}

.copyright-card {
  padding: 24px;
}

.copyright-card h3 {
  font-size: 16px;
  color: var(--color-text);
  margin-bottom: 8px;
}

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

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

.feedback-note a {
  font-weight: 500;
}

/* ==========================================================================
   pages — 404 错误页
   ========================================================================== */

.error-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 80px var(--container-padding) 100px;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.error-panel {
  text-align: center;
  max-width: 560px;
  width: 100%;
}

.error-code {
  font-size: 72px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 16px;
}

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

.error-desc {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 28px;
}

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

.btn-primary {
  display: inline-block;
  padding: 12px 28px;
  background-color: var(--color-primary);
  color: var(--color-white);
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--border-radius-sm);
  transition: background-color var(--transition-base);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
}

.btn-secondary {
  display: inline-block;
  padding: 12px 28px;
  background-color: var(--color-bg-light);
  color: var(--color-text);
  font-size: 15px;
  font-weight: 500;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-base);
}

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

/* ==========================================================================
   responsive — 响应式断点
   ========================================================================== */

/* ---------- 平板：768–1023 两栏 ---------- */

@media (max-width: 1023px) {
  .header-inner {
    min-height: 60px;
  }

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

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

  .hero-feature {
    margin-bottom: 0;
  }

  .recent-list {
    padding: 20px;
  }

  .recent-items {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
  }

  .recent-link {
    flex-direction: column;
    align-items: flex-start;
    padding: 14px;
  }

  .recent-thumb {
    width: 100%;
    height: 80px;
  }

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

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

  .two-col-layout {
    grid-template-columns: 1fr;
  }

  .intro-block,
  .intro-section,
  .faq-intro {
    grid-template-columns: 1fr;
  }

  .intro-media img,
  .intro-figure img,
  .faq-intro-media img {
    height: 220px;
  }

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

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

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

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

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

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

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

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

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

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

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

/* ---------- 手机：<768 单栏 ---------- */

@media (max-width: 767px) {
  .header-inner {
    flex-wrap: wrap;
    padding: 12px var(--container-padding);
    gap: 12px;
  }

  .brand-link {
    flex: 1;
  }

  .brand-slogan {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    width: 100%;
    order: 3;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 8px;
    margin-top: 4px;
  }

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

  .nav-item {
    width: 100%;
  }

  .nav-link {
    padding: 14px 16px;
    border-radius: var(--border-radius-sm);
  }

  .has-submenu .submenu {
    position: static;
    display: none;
    box-shadow: none;
    border: none;
    padding: 0 0 0 16px;
    min-width: 0;
  }

  .has-submenu.is-open .submenu {
    display: block;
  }

  .submenu li a {
    padding: 12px 16px;
  }

  .breadcrumb {
    padding: 12px 16px 0;
    font-size: 13px;
    overflow-x: auto;
    white-space: nowrap;
  }

  .home-main,
  .inner-main {
    padding: 0 16px 40px;
  }

  .page-header {
    padding: 20px;
    margin: 16px 0 24px;
  }

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

  .page-description {
    font-size: 14px;
  }

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

  .footer-bottom {
    padding: 12px 16px;
  }

  /* 首页 */
  .hero-list {
    grid-template-columns: 1fr;
    gap: 16px;
    padding-top: 16px;
    margin-bottom: 32px;
  }

  .feature-image {
    height: 200px;
  }

  .feature-content {
    padding: 16px 20px;
  }

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

  .recent-items {
    display: flex;
    flex-direction: column;
  }

  .recent-link {
    flex-direction: row;
    align-items: center;
    padding: 10px;
  }

  .recent-thumb {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
  }

  .summary-box {
    padding: 20px;
    margin-bottom: 32px;
  }

  .summary-actions {
    flex-direction: column;
  }

  .action-btn {
    text-align: center;
  }

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

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

  .genre-thumb img {
    height: 140px;
  }

  .genre-color-block {
    height: 60px;
  }

  .two-col-layout {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .col {
    padding: 20px;
  }

  .contribute-tip {
    flex-direction: column;
    align-items: flex-start;
    padding: 20px;
  }

  .tip-link {
    width: 100%;
    text-align: center;
  }

  /* 入门必修 */
  .intro-block,
  .intro-section,
  .faq-intro {
    grid-template-columns: 1fr;
    gap: 20px;
    margin-bottom: 36px;
  }

  .intro-media img,
  .intro-figure img,
  .faq-intro-media img {
    height: 180px;
  }

  .path-step,
  .process-step {
    flex-direction: column;
    gap: 12px;
    padding: 20px;
  }

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

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

  .concept-item {
    padding: 16px;
  }

  /* 题材谱系 */
  .genre-list {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .genre-body {
    padding: 16px 20px 20px;
  }

  .compare-panel {
    padding: 16px;
  }

  .compare-options {
    gap: 8px;
  }

  .compare-option {
    padding: 8px 12px;
    font-size: 13px;
  }

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

  .compare-column {
    padding: 16px;
  }

  /* 阅读手记 */
  .method-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .method-card,
  .review-item {
    padding: 20px;
  }

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

  /* 追更日程 */
  .week-list {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .day-group {
    padding: 16px 20px;
  }

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

  .frequency-card {
    padding: 20px;
  }

  /* 问题一答 */
  .faq-list .faq-item summary {
    font-size: 15px;
    padding: 14px 16px;
  }

  .faq-item .faq-answer {
    padding: 12px 16px;
  }

  /* 投稿交流 */
  .scope-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .scope-card {
    padding: 20px;
  }

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

  .check-item {
    padding: 16px;
  }

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

  .copyright-card {
    padding: 20px;
  }

  /* 相关链接 */
  .next-link-list {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .related-links {
    margin-top: 36px;
    padding-top: 24px;
  }

  /* 404 */
  .error-main {
    padding: 60px 16px 80px;
  }

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

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

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

  .btn-primary,
  .btn-secondary {
    text-align: center;
  }
}

/* ---------- 小手机：<420 额外收紧 ---------- */

@media (max-width: 419px) {
  .header-inner {
    padding: 10px 16px;
  }

  .brand-name {
    font-size: 20px;
  }

  .recent-items {
    gap: 8px;
  }

  .recent-link {
    gap: 10px;
    padding: 8px;
  }

  .recent-thumb {
    width: 44px;
    height: 44px;
  }

  .recent-text {
    font-size: 13px;
  }

  .feature-content {
    padding: 14px 16px;
  }

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

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

  .summary-actions {
    gap: 8px;
  }

  .action-btn {
    padding: 10px 16px;
    font-size: 13px;
  }

  .toc-item {
    padding: 16px;
  }

  .col {
    padding: 16px;
  }

  .method-list li,
  .schedule-list li {
    padding: 10px 14px;
  }
}