/* ==========================================================================
   悠兔 Youtu (youtu6.lol) - 全站核心样式表
   主题：Quiet Route｜悠兔轻行指南
   设计风格：温和、理性、干净的编辑式排版
   ========================================================================== */

:root {
  --bg-page: #FCFBF7;
  --bg-surface: #FFFFFF;
  --bg-subtle: #F6F8F5;
  --color-primary: #184B40;        /* 深墨绿 */
  --color-primary-hover: #123B32;
  --color-primary-soft: #E7F0EA;   /* 柔和绿 */
  --color-accent: #D98A50;         /* 暖橙强调 */
  --color-accent-soft: #FBF2EB;
  --color-text-title: #1F2926;     /* 标题深黑绿 */
  --color-text-body: #66716C;      /* 正文文字 */
  --color-text-muted: #8E9C96;     /* 辅助弱文字 */
  --color-border: #E3E8E1;         /* 浅灰绿边框 */
  --color-border-subtle: #EDF1EB;
  
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 2px rgba(24, 75, 64, 0.04);
  --shadow-md: 0 4px 12px rgba(24, 75, 64, 0.06);
  --transition: all 0.2s ease-in-out;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bg-page);
  color: var(--color-text-body);
}

body {
  font-family: var(--font-sans);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: var(--bg-page);
  color: var(--color-text-body);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

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

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

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

/* 容器定义 */
.container {
  width: 100%;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* 顶部公告条 */
.top-announcement {
  background-color: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 0.85rem;
  padding: 8px 16px;
  text-align: center;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
}
.top-announcement .badge {
  background-color: var(--color-primary);
  color: #FFFFFF;
  font-size: 0.72rem;
  padding: 1px 6px;
  border-radius: var(--radius-sm);
  font-weight: 600;
}

/* 顶部导航栏 */
.site-header {
  background-color: rgba(252, 251, 247, 0.94);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand-logo-link {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-logo-img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  object-fit: contain;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text-title);
  line-height: 1.2;
}

.brand-sub {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-title);
  position: relative;
  padding: 6px 0;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-primary);
}

.nav-links a.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-primary);
  border-radius: 1px;
}

.nav-action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 18px;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 600;
  background-color: var(--color-primary);
  color: #FFFFFF;
  border: 1px solid var(--color-primary);
  transition: var(--transition);
  cursor: pointer;
}

.nav-action-btn:hover {
  background-color: var(--color-primary-hover);
  color: #FFFFFF;
}

/* 移动端菜单按钮 */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-text-title);
  cursor: pointer;
  padding: 6px;
}

/* 桌面端首页双栏布局 (左侧窄品牌区，右侧宽信息区) */
.layout-editorial {
  display: flex;
  gap: 48px;
  padding-top: 40px;
  padding-bottom: 72px;
  position: relative;
}

.editorial-aside {
  width: 280px;
  flex-shrink: 0;
}

.editorial-aside-sticky {
  position: sticky;
  top: 96px;
  background-color: var(--bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.aside-brand-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.aside-brand-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border-subtle);
}

.aside-brand-logo {
  width: 44px;
  height: 44px;
  border-radius: 10px;
}

.aside-brand-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text-title);
}

.aside-brand-kicker {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.aside-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background-color: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 0.78rem;
  border-radius: 100px;
  font-weight: 600;
  width: fit-content;
}

.aside-status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--color-primary);
  display: inline-block;
}

.aside-desc {
  font-size: 0.88rem;
  color: var(--color-text-body);
  line-height: 1.6;
}

.aside-toc-title {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 12px;
  margin-bottom: 8px;
}

.aside-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.aside-nav-list a {
  font-size: 0.85rem;
  color: var(--color-text-body);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 0;
  transition: var(--transition);
}

.aside-nav-list a:hover {
  color: var(--color-primary);
  transform: translateX(3px);
}

.aside-nav-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* 右侧主内容区 */
.editorial-main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 64px;
}

/* 章节通用样式 */
.section-block {
  scroll-margin-top: 90px;
}

.section-header {
  margin-bottom: 24px;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.section-kicker {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.section-title {
  font-size: 1.65rem;
  font-weight: 700;
  color: var(--color-text-title);
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.section-subtitle {
  font-size: 0.95rem;
  color: var(--color-text-body);
}

/* 首页 Hero 区域 */
.hero-block {
  background-color: var(--bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-primary);
  background-color: var(--color-primary-soft);
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
}

.hero-heading {
  font-size: 2.3rem;
  font-weight: 800;
  color: var(--color-text-title);
  line-height: 1.25;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.hero-subheading {
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--color-accent);
  margin-bottom: 18px;
}

.hero-description {
  font-size: 1rem;
  color: var(--color-text-body);
  line-height: 1.75;
  max-width: 720px;
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 24px;
  background-color: var(--color-primary);
  color: #FFFFFF;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid var(--color-primary);
  transition: var(--transition);
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  color: #FFFFFF;
  box-shadow: 0 4px 12px rgba(24, 75, 64, 0.15);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 24px;
  background-color: var(--bg-surface);
  color: var(--color-text-title);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.btn-secondary:hover {
  background-color: var(--bg-subtle);
  border-color: var(--color-text-body);
  color: var(--color-text-title);
}

.btn-accent {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 24px;
  background-color: var(--color-accent);
  color: #FFFFFF;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid var(--color-accent);
  transition: var(--transition);
  text-decoration: none;
}

.btn-accent:hover {
  background-color: #C5773F;
  border-color: #C5773F;
  color: #FFFFFF;
  box-shadow: 0 4px 12px rgba(217, 138, 80, 0.25);
  transform: translateY(-1px);
}

.btn-icon {
  flex-shrink: 0;
  display: inline-block;
}

/* 三项核心信息 */
.core-features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-box {
  background-color: var(--bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: var(--transition);
}

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

.feature-icon-wrapper {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background-color: var(--color-primary-soft);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
}

.feature-number {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.feature-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text-title);
}

.feature-desc {
  font-size: 0.88rem;
  color: var(--color-text-body);
  line-height: 1.65;
}

.feature-link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* 套餐对照区域 */
.plans-wrapper {
  background-color: var(--bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.plans-notice-bar {
  background-color: #FFF9F3;
  border-bottom: 1px solid #F5E5D5;
  padding: 12px 20px;
  font-size: 0.85rem;
  color: #8C5528;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.plans-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.88rem;
  min-width: 680px;
}

.plans-table th {
  background-color: var(--bg-subtle);
  color: var(--color-text-title);
  padding: 14px 18px;
  font-weight: 600;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

.plans-table td {
  padding: 16px 18px;
  border-bottom: 1px solid var(--color-border-subtle);
  vertical-align: middle;
}

.plans-table tr:hover td {
  background-color: rgba(231, 240, 234, 0.3);
}

.plan-name-cell {
  font-weight: 700;
  color: var(--color-text-title);
  font-size: 0.95rem;
}

.plan-price-text {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--color-primary);
  font-family: var(--font-mono);
}

.plan-price-unit {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-weight: normal;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-size: 0.72rem;
  font-weight: 600;
  white-space: nowrap;
}

.status-reference {
  background-color: #E8F2EC;
  color: #17634F;
}

.status-conflict {
  background-color: #FDF0E9;
  color: #B54A24;
}

.status-unverified {
  background-color: #F1F3F2;
  color: #5C6A65;
}

.plan-notes-cell {
  font-size: 0.8rem;
  color: var(--color-text-body);
  max-width: 220px;
  line-height: 1.45;
}

.btn-plan-action {
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  background-color: var(--color-primary-soft);
  color: var(--color-primary);
  border: 1px solid var(--color-border);
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition);
}

.btn-plan-action:hover {
  background-color: var(--color-primary);
  color: #FFFFFF;
}

.btn-plan-disabled {
  background-color: #F5F5F5;
  color: #999999;
  border: 1px solid #E0E0E0;
  cursor: not-allowed;
}

/* 使用指南入口网格 */
.guides-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.guide-step-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.guide-step-num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--color-primary-soft);
  color: var(--color-primary);
  font-weight: 700;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-family: var(--font-mono);
}

.guide-step-content {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.guide-step-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text-title);
}

.guide-step-desc {
  font-size: 0.88rem;
  color: var(--color-text-body);
  line-height: 1.6;
}

/* 六篇精选文章卡片 */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.article-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: var(--transition);
}

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

.article-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

.article-category {
  font-weight: 600;
  color: var(--color-primary);
  background-color: var(--color-primary-soft);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

.article-title-link {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text-title);
  line-height: 1.4;
  transition: var(--transition);
}

.article-title-link:hover {
  color: var(--color-accent);
}

.article-summary {
  font-size: 0.88rem;
  color: var(--color-text-body);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-readmore {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--color-border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
}

.article-readmore:hover {
  color: var(--color-accent);
}

/* FAQ 常见问题折叠列表 */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background-color: var(--bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: var(--color-primary);
}

.faq-question {
  width: 100%;
  text-align: left;
  padding: 16px 20px;
  background: none;
  border: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-title);
  cursor: pointer;
}

.faq-question:hover {
  color: var(--color-primary);
}

.faq-icon {
  font-size: 1.1rem;
  transition: transform 0.2s ease;
  color: var(--color-text-muted);
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  color: var(--color-primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease, padding 0.25s ease;
  padding: 0 20px;
  font-size: 0.9rem;
  color: var(--color-text-body);
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding-bottom: 18px;
}

/* 页脚 Footer */
.site-footer {
  background-color: #F4F3EE;
  border-top: 1px solid var(--color-border);
  padding: 56px 0 32px;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand-col {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-brand-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text-title);
}

.footer-brand-logo {
  width: 32px;
  height: 32px;
  border-radius: 6px;
}

.footer-desc {
  font-size: 0.85rem;
  color: var(--color-text-body);
  line-height: 1.6;
}

.footer-col-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-text-title);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 14px;
}

.footer-nav {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-nav a {
  font-size: 0.85rem;
  color: var(--color-text-body);
  transition: var(--transition);
}

.footer-nav a:hover {
  color: var(--color-primary);
  padding-left: 2px;
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* ==========================================================================
   文章阅读页面专有排版样式
   正文宽度 720-780px，舒适行距，清晰段落间距
   ========================================================================== */
.article-reading-page {
  padding-top: 36px;
  padding-bottom: 80px;
}

.article-container {
  max-width: 820px;
  margin: 0 auto;
}

.article-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 24px;
}

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

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

.article-header {
  margin-bottom: 32px;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 24px;
}

.article-category-badge {
  display: inline-block;
  background-color: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
}

.article-main-title {
  font-size: 2.15rem;
  font-weight: 800;
  color: var(--color-text-title);
  line-height: 1.35;
  margin-bottom: 16px;
  letter-spacing: -0.015em;
}

.article-lead {
  font-size: 1.05rem;
  color: var(--color-text-body);
  line-height: 1.75;
  background-color: var(--bg-surface);
  border-left: 4px solid var(--color-primary);
  padding: 16px 20px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin-bottom: 20px;
}

.article-dates-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px;
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

.article-dates-bar span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* 文章目录 TOC */
.article-toc-box {
  background-color: var(--bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin-bottom: 40px;
}

.article-toc-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-text-title);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.article-toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.article-toc-list a {
  font-size: 0.88rem;
  color: var(--color-text-body);
  text-decoration: none;
  display: inline-block;
  transition: var(--transition);
}

.article-toc-list a:hover {
  color: var(--color-primary);
  transform: translateX(4px);
}

/* 文章正文 */
.article-content {
  font-size: 1.02rem;
  line-height: 1.85;
  color: #33413C;
}

.article-content p {
  margin-bottom: 22px;
}

.article-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-title);
  margin-top: 48px;
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-border-subtle);
  position: relative;
}

.article-content h2::before {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 32px;
  height: 2px;
  background-color: var(--color-primary);
}

.article-content h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-text-title);
  margin-top: 28px;
  margin-bottom: 12px;
}

.article-content ul, 
.article-content ol {
  margin-bottom: 22px;
  padding-left: 24px;
}

.article-content li {
  margin-bottom: 8px;
}

.article-content blockquote {
  background-color: var(--bg-surface);
  border-left: 4px solid var(--color-accent);
  padding: 16px 20px;
  margin: 24px 0;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-size: 0.95rem;
  color: #55625D;
}

.article-content code {
  font-family: var(--font-mono);
  background-color: var(--color-primary-soft);
  color: var(--color-primary);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-size: 0.88em;
}

.article-table-wrap {
  width: 100%;
  overflow-x: auto;
  margin: 28px 0;
}

.article-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.article-table th {
  background-color: var(--bg-subtle);
  color: var(--color-text-title);
  padding: 12px 16px;
  font-weight: 600;
  border-bottom: 1px solid var(--color-border);
}

.article-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border-subtle);
  color: var(--color-text-body);
}

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

/* 文章底部快捷购买 CTA 模块 */
.article-cta-box {
  margin-top: 48px;
  margin-bottom: 24px;
  background-color: var(--bg-surface);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: 22px 28px;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.article-cta-text h4 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text-title);
  margin-bottom: 6px;
}

.article-cta-text p {
  font-size: 0.9rem;
  color: var(--color-text-body);
  line-height: 1.5;
  margin: 0;
}

.btn-cta-buy {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 26px;
  background-color: var(--color-accent);
  color: #FFFFFF;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1rem;
  border: 1px solid var(--color-accent);
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
  box-shadow: 0 2px 6px rgba(217, 138, 80, 0.2);
}

.btn-cta-buy:hover {
  background-color: #C5773F;
  border-color: #C5773F;
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(217, 138, 80, 0.32);
  transform: translateY(-1px);
}

/* 文章页相关阅读 */
.article-related-box {
  margin-top: 56px;
  padding-top: 36px;
  border-top: 1px solid var(--color-border);
}

.article-related-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-title);
  margin-bottom: 20px;
}

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

.related-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: var(--transition);
}

.related-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.related-card-title {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--color-text-title);
  line-height: 1.4;
}

.related-card-date {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* 弹窗 Modal（入口待配置提醒） */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(31, 41, 38, 0.45);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-overlay.active {
  display: flex;
}

.modal-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  max-width: 440px;
  width: 100%;
  padding: 28px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: relative;
  animation: modalFadeIn 0.2s ease-out;
}

@keyframes modalFadeIn {
  from { opacity: 0; transform: scale(0.96); }
  to { opacity: 1; transform: scale(1); }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text-title);
  display: flex;
  align-items: center;
  gap: 8px;
}

.modal-close-btn {
  background: none;
  border: none;
  font-size: 1.25rem;
  color: var(--color-text-muted);
  cursor: pointer;
}

.modal-body {
  font-size: 0.92rem;
  color: var(--color-text-body);
  line-height: 1.65;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
}

/* 返回顶部按钮 */
.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background-color: var(--bg-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-title);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 90;
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background-color: var(--color-primary);
  color: #FFFFFF;
  border-color: var(--color-primary);
}

/* ==========================================================================
   响应式断点适配 (1440px / 1024px / 768px / 390px / 375px)
   ========================================================================== */
@media (max-width: 1024px) {
  .layout-editorial {
    gap: 32px;
  }
  .editorial-aside {
    width: 240px;
  }
  .core-features-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 860px) {
  .layout-editorial {
    flex-direction: column;
    padding-top: 24px;
    gap: 40px;
  }
  .editorial-aside {
    width: 100%;
  }
  .editorial-aside-sticky {
    position: static;
  }
  .articles-grid {
    grid-template-columns: 1fr;
  }
  .guides-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: block;
  }
  .nav-links {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: 20px;
    gap: 16px;
    box-shadow: var(--shadow-md);
  }
  .nav-links.active {
    display: flex;
  }
  .hero-block {
    padding: 28px 20px;
  }
  .hero-heading {
    font-size: 1.8rem;
  }
  .hero-subheading {
    font-size: 1.05rem;
  }
  .article-main-title {
    font-size: 1.65rem;
  }
  .article-related-grid {
    grid-template-columns: 1fr;
  }
  .article-cta-box {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
    padding: 20px 16px;
  }
  .btn-cta-buy {
    width: 100%;
    justify-content: center;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

@media (max-width: 480px) {
  .hero-heading {
    font-size: 1.55rem;
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  .hero-actions .btn-primary,
  .hero-actions .btn-secondary,
  .hero-actions .btn-accent {
    width: 100%;
    justify-content: center;
  }
  .plans-table th, 
  .plans-table td {
    padding: 10px 12px;
  }
}

/* 尊重减少动态设置 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}