/* ==========================================================================
   八戒云 - “云栈通行系统” 原生样式表
   主题：暖白东方商务 / 现代中文编辑 / 细分割线 / 高级留白
   ========================================================================== */

:root {
  /* 品牌核心配色体系 (70% 暖白/白, 20% 深文字/墨青, 10% 朱砂/暖金) */
  --bg-main: #FAF7F1;
  --bg-card: #FFFFFF;
  --bg-secondary: #F4EFE7;
  --bg-footer: #F0EBE3;
  --bg-light-cyan: #EDF2EF;
  --bg-light-red: #F7EEEB;

  --text-main: #242321;
  --text-body: #55514C;
  --text-muted: #827A70;
  --text-footer: #49433D;

  --color-cinnabar: #A34A3F;   /* 朱砂红 */
  --color-moqing: #355F5A;     /* 墨青 */
  --color-warm-gold: #B68A52;  /* 暖金 */
  --border-color: #E4DDD2;     /* 浅米灰分割线 */
  --border-focus: #355F5A;

  /* 基础尺寸与排版 */
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "WenQuanYi Micro Hei", sans-serif;
  --header-height: 70px;
  --container-max: 1160px;
  --article-max: 780px;

  /* 动效缓动 */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

/* 基础重置 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-body);
  font-size: 16px;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-main);
  color: var(--text-body);
  overflow-x: hidden;
}

/* 链接通用规范 */
a {
  color: var(--color-moqing);
  text-decoration: none;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

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

img, svg {
  display: inline-block;
  vertical-align: middle;
}

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

/* 按钮规范 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: 4px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-cinnabar);
  color: #FFFFFF;
  border-color: var(--color-cinnabar);
}

.btn-primary:hover {
  background-color: #8c3e34;
  color: #FFFFFF;
}

.btn-primary:hover .btn-arrow {
  transform: translateX(3px);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-moqing);
  border-color: var(--color-moqing);
}

.btn-outline:hover {
  background-color: var(--bg-light-cyan);
  color: var(--color-moqing);
}

.btn-text {
  background: none;
  color: var(--text-main);
  border-color: var(--border-color);
}

.btn-text:hover {
  background-color: var(--bg-secondary);
  color: var(--color-cinnabar);
}

.btn-arrow {
  display: inline-block;
  transition: transform var(--transition-fast);
  font-family: inherit;
}

/* ==========================================================================
   Header 导航栏 (66px–74px 高度)
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background-color: rgba(250, 247, 241, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-color);
  transition: background-color var(--transition-fast);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

/* 品牌 Logo */
.site-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-main);
  text-decoration: none;
}

.brand-logo-svg {
  width: 38px !important;
  height: 38px !important;
  min-width: 38px !important;
  max-width: 38px !important;
  flex-shrink: 0;
  display: inline-block;
  vertical-align: middle;
}

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

.brand-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.2;
  letter-spacing: 0.05em;
}

.brand-subtitle {
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  margin-top: 2px;
}

/* 中间导航链接 */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 20px;
  list-style: none;
}

.nav-link {
  position: relative;
  font-size: 0.92rem;
  color: var(--text-main);
  font-weight: 500;
  padding: 6px 0;
  transition: color var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-cinnabar);
}

/* 当前导航细线 */
.nav-link.active {
  color: var(--color-cinnabar);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: -18px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-cinnabar);
}

/* 移动端菜单开关 */
.mobile-menu-btn {
  display: none;
  background: none;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 8px 12px;
  font-size: 0.88rem;
  color: var(--text-main);
  cursor: pointer;
  align-items: center;
  gap: 6px;
}

.mobile-menu-btn:hover {
  background-color: var(--bg-secondary);
}

/* 移动端抽屉导航 */
.mobile-nav-drawer {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  width: 100%;
  background-color: var(--bg-main);
  border-bottom: 2px solid var(--border-color);
  padding: 20px 24px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
  z-index: 99;
}

.mobile-nav-drawer.open {
  display: block;
}

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.mobile-nav-item a {
  display: block;
  font-size: 1.05rem;
  color: var(--text-main);
  padding: 8px 0;
  border-bottom: 1px dashed var(--border-color);
}

.mobile-nav-item a:hover {
  color: var(--color-cinnabar);
}

.mobile-nav-cta {
  margin-top: 16px;
  display: block;
  text-align: center;
}

/* ==========================================================================
   Hero: “云栈通行系统” (600px–690px 高度)
   ========================================================================== */
.hero-section {
  position: relative;
  background: linear-gradient(180deg, var(--bg-main) 0%, #FFFFFF 100%);
  border-bottom: 1px solid var(--border-color);
  padding: 56px 0 40px;
  min-height: 600px;
  max-height: 690px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.hero-content {
  max-width: 860px;
  margin: 0 auto;
  text-align: center;
}

.hero-tag {
  display: inline-block;
  padding: 4px 14px;
  font-size: 0.82rem;
  color: var(--color-moqing);
  background-color: var(--bg-light-cyan);
  border: 1px solid rgba(53, 95, 90, 0.2);
  border-radius: 20px;
  margin-bottom: 16px;
  letter-spacing: 0.05em;
  font-weight: 500;
}

.hero-h1 {
  font-size: 2.15rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.3;
  margin-bottom: 14px;
  letter-spacing: -0.01em;
}

.hero-slogan {
  font-size: 1.5rem;
  color: var(--color-moqing);
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 12px;
}

.hero-subtitle {
  font-size: 0.95rem;
  color: var(--color-warm-gold);
  font-weight: 600;
  letter-spacing: 0.06em;
  margin-bottom: 18px;
}

.hero-description {
  font-size: 1rem;
  color: var(--text-body);
  line-height: 1.75;
  max-width: 740px;
  margin: 0 auto 28px;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 36px;
}

/* 云路通行条 (贯穿式细线路径 + 4 个节点) */
.cloud-path-wrapper {
  margin-top: auto;
  padding-top: 20px;
}

.cloud-path-label {
  text-align: center;
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}

.cloud-path {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 0 20px;
}

/* 贯穿细线 */
.cloud-path::before {
  content: "";
  position: absolute;
  top: 14px;
  left: 60px;
  right: 60px;
  height: 2px;
  background: linear-gradient(90deg, var(--border-color) 0%, var(--color-moqing) 50%, var(--color-warm-gold) 100%);
  z-index: 1;
}

.cloud-path-node {
  position: relative;
  z-index: 2;
  text-align: center;
  flex: 1;
  max-width: 200px;
}

.path-node-dot {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-color: var(--bg-main);
  border: 2px solid var(--color-moqing);
  color: var(--color-moqing);
  font-size: 0.78rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 10px;
  transition: transform var(--transition-fast), background-color var(--transition-fast);
}

.cloud-path-node:hover .path-node-dot {
  background-color: var(--color-moqing);
  color: #FFFFFF;
  transform: scale(1.1);
}

.path-node-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 4px;
}

.path-node-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* ==========================================================================
   模块通用排版与样式规范
   ========================================================================== */
.section {
  padding: 72px 0;
  border-bottom: 1px solid var(--border-color);
}

.section-alt {
  background-color: var(--bg-secondary);
}

.section-header {
  margin-bottom: 36px;
}

.section-num {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-cinnabar);
  letter-spacing: 0.1em;
  margin-bottom: 6px;
  display: block;
}

.section-title {
  font-size: 1.65rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.section-intro {
  margin-top: 10px;
  font-size: 0.96rem;
  color: var(--text-body);
  max-width: 820px;
}

/* ==========================================================================
   01 / 云路入口：通行步骤 (细虚线连接)
   ========================================================================== */
.steps-container {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: 16px;
  position: relative;
}

.step-card {
  flex: 1;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 24px 20px;
  position: relative;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

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

.step-num {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-warm-gold);
  margin-bottom: 8px;
}

.step-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 8px;
}

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

.step-arrow-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--border-color);
  font-size: 1.2rem;
  flex-shrink: 0;
  padding: 0 4px;
}

/* ==========================================================================
   02 / 线路怎么选：真实 HTML Table
   ========================================================================== */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background-color: var(--bg-card);
}

.custom-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.92rem;
}

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

.custom-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-body);
  line-height: 1.6;
}

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

.custom-table tbody tr:hover {
  background-color: #FAF8F5;
}

.type-tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 3px;
  font-size: 0.8rem;
  font-weight: 600;
}

.type-tag-direct { background: #EFEFEF; color: #555; }
.type-tag-transit { background: var(--bg-light-cyan); color: var(--color-moqing); }
.type-tag-iepl { background: #F7EEEB; color: var(--color-cinnabar); }
.type-tag-iplc { background: #FFF4E5; color: var(--color-warm-gold); }

/* ==========================================================================
   03 / 节点目的地：云栈目的地索引 (每行信息结构)
   ========================================================================== */
.dest-index-list {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background-color: var(--bg-card);
}

.dest-index-row {
  display: grid;
  grid-template-columns: 80px 140px 1fr 1.2fr;
  align-items: center;
  padding: 18px 24px;
  border-bottom: 1px solid var(--border-color);
  gap: 16px;
  transition: background-color var(--transition-fast);
}

.dest-index-row:last-child {
  border-bottom: none;
}

.dest-index-row:hover {
  background-color: #FDFCFA;
}

.dest-num {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-warm-gold);
}

.dest-region {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 8px;
}

.dest-scene {
  font-size: 0.88rem;
  color: var(--color-moqing);
  font-weight: 500;
}

.dest-hint {
  font-size: 0.88rem;
  color: var(--text-body);
  line-height: 1.5;
}

/* ==========================================================================
   04 / AI工具：工具通行索引
   ========================================================================== */
.ai-tool-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.ai-tool-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 20px;
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.ai-tool-card:hover {
  border-color: var(--color-moqing);
  transform: translateY(-2px);
}

.ai-tool-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 10px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 8px;
}

.ai-tool-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
}

.ai-tool-tag {
  font-size: 0.75rem;
  color: var(--color-warm-gold);
  font-weight: 600;
}

.ai-tool-focus {
  font-size: 0.85rem;
  color: var(--color-moqing);
  margin-bottom: 6px;
  font-weight: 500;
}

.ai-tool-desc {
  font-size: 0.86rem;
  color: var(--text-body);
  line-height: 1.6;
}

/* ==========================================================================
   05 / 流媒体：三列信息行
   ========================================================================== */
.media-table-wrapper {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  overflow: hidden;
}

.media-row {
  display: grid;
  grid-template-columns: 180px 220px 1fr;
  align-items: center;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border-color);
  gap: 16px;
  font-size: 0.92rem;
}

.media-row:last-child {
  border-bottom: none;
}

.media-row:hover {
  background-color: #FAF8F5;
}

.media-platform {
  font-weight: 700;
  color: var(--text-main);
  font-size: 1rem;
}

.media-target {
  color: var(--color-moqing);
  font-weight: 500;
}

.media-focus {
  color: var(--text-body);
  line-height: 1.5;
}

/* ==========================================================================
   06 / 客户端：设备通行清单
   ========================================================================== */
.device-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.device-item {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 22px 18px;
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.device-item:hover {
  border-color: var(--color-moqing);
  transform: translateY(-2px);
}

.device-badge {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--color-warm-gold);
  margin-bottom: 6px;
}

.device-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}

.device-mode {
  font-size: 0.85rem;
  color: var(--color-moqing);
  font-weight: 500;
  margin-bottom: 10px;
}

.device-desc {
  font-size: 0.85rem;
  color: var(--text-body);
  line-height: 1.55;
  margin-bottom: 14px;
}

.device-link {
  font-size: 0.85rem;
  color: var(--color-cinnabar);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.device-link:hover {
  text-decoration: underline;
}

/* ==========================================================================
   07 / 套餐价格：“云栈通行方案” (核心商业区)
   ========================================================================== */
/* 套餐上方快速选择条 */
.pricing-quick-chooser {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 14px 20px;
  margin-bottom: 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.88rem;
}

.chooser-label {
  font-weight: 600;
  color: var(--text-main);
}

.chooser-items {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.chooser-item {
  color: var(--text-body);
  cursor: pointer;
  transition: color var(--transition-fast);
}

.chooser-item span {
  color: var(--color-moqing);
  font-weight: 600;
}

.chooser-item:hover {
  color: var(--color-cinnabar);
}

/* Desktop 通行方案表格 / 行式布局 */
.pricing-table-container {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  overflow: hidden;
}

.pricing-row {
  display: grid;
  grid-template-columns: 60px 150px 120px 140px 1fr 110px 140px;
  align-items: center;
  padding: 18px 24px;
  border-bottom: 1px solid var(--border-color);
  gap: 16px;
  transition: background-color var(--transition-fast);
}

.pricing-row:last-child {
  border-bottom: none;
}

.pricing-row:hover {
  background-color: #FAF8F5;
}

/* 主推方案高亮 (畅行方案) */
.pricing-row.pricing-featured {
  background-color: var(--bg-light-cyan);
  border-left: 4px solid var(--color-moqing);
}

.pricing-num {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-muted);
}

.pricing-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 6px;
}

.pricing-traffic {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-moqing);
}

.pricing-price {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-cinnabar);
}

.pricing-price small {
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--text-muted);
}

.pricing-scene {
  font-size: 0.88rem;
  color: var(--text-body);
  line-height: 1.5;
}

.pricing-badge {
  display: inline-block;
  padding: 3px 10px;
  font-size: 0.78rem;
  font-weight: 600;
  border-radius: 3px;
  text-align: center;
}

.badge-normal {
  background-color: var(--bg-secondary);
  color: var(--text-muted);
}

.badge-featured {
  background-color: var(--color-warm-gold);
  color: #FFFFFF;
}

.badge-reserve {
  background-color: #E8E4DC;
  color: var(--text-main);
}

.pricing-action .btn {
  width: 100%;
  padding: 8px 14px;
  font-size: 0.88rem;
}

/* 移动端套餐卡片容器 (默认隐藏在桌面端) */
.pricing-mobile-cards {
  display: none;
}

/* ==========================================================================
   08 / 八戒云深度评测导读区
   ========================================================================== */
.review-lead-box {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--color-cinnabar);
  border-radius: 4px;
  padding: 32px 28px;
}

.review-lead-meta {
  display: flex;
  gap: 16px;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.review-lead-title {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 14px;
  line-height: 1.35;
}

.review-lead-desc {
  font-size: 0.95rem;
  color: var(--text-body);
  line-height: 1.7;
  margin-bottom: 20px;
}

.review-lead-highlights {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
  padding: 16px;
  background-color: var(--bg-secondary);
  border-radius: 4px;
}

.lead-hl-item {
  font-size: 0.88rem;
  color: var(--text-main);
}

.lead-hl-item strong {
  display: block;
  color: var(--color-moqing);
  margin-bottom: 4px;
  font-size: 0.92rem;
}

/* ==========================================================================
   09 / 使用教程：云栈手册目录 (每篇一行)
   ========================================================================== */
.handbook-list {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 4px;
}

.handbook-row {
  display: grid;
  grid-template-columns: 60px 1fr 140px;
  align-items: center;
  padding: 18px 24px;
  border-bottom: 1px solid var(--border-color);
  gap: 20px;
  transition: background-color var(--transition-fast);
}

.handbook-row:last-child {
  border-bottom: none;
}

.handbook-row:hover {
  background-color: #FAF8F5;
}

.handbook-num {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-warm-gold);
}

.handbook-content {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.handbook-meta {
  display: flex;
  gap: 10px;
  font-size: 0.8rem;
}

.handbook-category {
  color: var(--color-moqing);
  font-weight: 600;
}

.handbook-title {
  font-size: 1.08rem;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.4;
}

.handbook-title:hover {
  color: var(--color-cinnabar);
}

.handbook-excerpt {
  font-size: 0.86rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.handbook-action {
  text-align: right;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
}

.handbook-time {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.handbook-read {
  font-size: 0.88rem;
  color: var(--color-cinnabar);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.handbook-read:hover .btn-arrow {
  transform: translateX(3px);
}

/* ==========================================================================
   10 / 网络排障：逐项检查清单
   ========================================================================== */
.troubleshoot-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.troubleshoot-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 18px 16px;
  transition: border-color var(--transition-fast);
}

.troubleshoot-card:hover {
  border-color: var(--color-moqing);
}

.troubleshoot-num {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-cinnabar);
  margin-bottom: 6px;
}

.troubleshoot-title {
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 6px;
}

.troubleshoot-desc {
  font-size: 0.84rem;
  color: var(--text-body);
  line-height: 1.55;
}

/* ==========================================================================
   11 / 常见问题：通行问答 (纯中文折叠面板)
   ========================================================================== */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-item.active {
  border-color: var(--color-moqing);
}

.faq-header {
  padding: 16px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  user-select: none;
  background-color: var(--bg-card);
}

.faq-header:hover {
  background-color: #FAF8F5;
}

.faq-question {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 10px;
}

.faq-icon {
  font-size: 1.2rem;
  color: var(--color-moqing);
  transition: transform var(--transition-fast);
}

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

.faq-content {
  display: none;
  padding: 0 20px 18px 20px;
  font-size: 0.92rem;
  color: var(--text-body);
  line-height: 1.7;
  border-top: 1px dashed var(--border-color);
}

.faq-item.active .faq-content {
  display: block;
  padding-top: 14px;
}

/* ==========================================================================
   文章页与分类页排版系统 (720px–820px 正文，暖白背景外围)
   ========================================================================== */
.article-page-container {
  width: 100%;
  max-width: var(--article-max);
  margin: 40px auto 60px;
  padding: 0 20px;
}

.article-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 44px 40px;
}

.article-header {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 24px;
  margin-bottom: 28px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

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

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

.article-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.35;
  margin-bottom: 14px;
}

.article-lead {
  font-size: 1.05rem;
  color: var(--text-body);
  line-height: 1.75;
  margin-bottom: 18px;
}

.article-meta-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.meta-tag {
  color: var(--color-moqing);
  background: var(--bg-light-cyan);
  padding: 2px 8px;
  border-radius: 3px;
  font-weight: 500;
}

/* GEO 快速结论框 (每篇顶部) */
.geo-conclusion {
  background-color: #F8FBF9;
  border: 1px solid rgba(53, 95, 90, 0.25);
  border-left: 4px solid var(--color-moqing);
  border-radius: 4px;
  padding: 18px 22px;
  margin-bottom: 32px;
}

.geo-conclusion-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-moqing);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.geo-conclusion-content {
  font-size: 0.92rem;
  color: var(--text-body);
  line-height: 1.7;
}

/* 本文目录 (TOC) */
.article-toc {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 20px 24px;
  margin-bottom: 36px;
}

.toc-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
}

.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.9rem;
}

.toc-list li a {
  color: var(--text-body);
  display: block;
}

.toc-list li a:hover {
  color: var(--color-cinnabar);
}

/* 正文 Typography 规范 */
.article-body {
  font-size: 1rem;
  color: var(--text-body);
  line-height: 1.85;
}

.article-body h2 {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--text-main);
  margin-top: 40px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
  line-height: 1.35;
}

.article-body h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-main);
  margin-top: 28px;
  margin-bottom: 12px;
  line-height: 1.4;
}

.article-body p {
  margin-bottom: 18px;
}

.article-body ul, .article-body ol {
  margin-bottom: 20px;
  padding-left: 24px;
}

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

.article-body strong {
  color: var(--text-main);
  font-weight: 600;
}

.article-callout {
  background-color: var(--bg-secondary);
  border-left: 3px solid var(--color-warm-gold);
  padding: 14px 18px;
  margin: 24px 0;
  font-size: 0.92rem;
  border-radius: 0 4px 4px 0;
}

.article-callout-alert {
  background-color: var(--bg-light-red);
  border-left: 3px solid var(--color-cinnabar);
}

/* 文章底部导航与商业转化条 */
.article-cta-box {
  margin-top: 44px;
  padding: 24px;
  background-color: var(--bg-light-cyan);
  border: 1px solid rgba(53, 95, 90, 0.25);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.article-cta-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 4px;
}

.article-cta-desc {
  font-size: 0.88rem;
  color: var(--text-body);
}

.article-nav-links {
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  font-size: 0.92rem;
}

.article-nav-item {
  max-width: 48%;
}

.article-nav-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

/* 分类页专用样式 */
.category-page-header {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 32px 36px;
  margin-bottom: 30px;
}

/* ==========================================================================
   Footer 页脚 (暖灰白背景 #F0EBE3, 文字 #49433D, 250px–320px 高度)
   ========================================================================== */
.site-footer {
  margin-top: auto;
  background-color: var(--bg-footer);
  color: var(--text-footer);
  border-top: 1px solid var(--border-color);
  padding: 40px 0 24px;
  font-size: 0.9rem;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr 1.2fr;
  gap: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border-color);
}

.footer-col-brand .brand-title {
  font-size: 1.2rem;
  color: var(--text-main);
}

.footer-col-brand .brand-desc {
  font-size: 0.85rem;
  color: var(--text-footer);
  margin-top: 8px;
  line-height: 1.6;
}

.footer-col-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 14px;
}

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

.footer-links a {
  color: var(--text-footer);
  font-size: 0.86rem;
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 20px;
  font-size: 0.82rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 16px;
}

.footer-friendly-links {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.friendly-label {
  font-weight: 600;
  color: var(--text-main);
}

.footer-friendly-links a {
  color: var(--text-footer);
  text-decoration: none;
}

.footer-friendly-links a:hover {
  color: var(--color-cinnabar);
  text-decoration: underline;
}

/* ==========================================================================
   404 页面
   ========================================================================== */
.error-page-container {
  max-width: 600px;
  margin: 80px auto;
  text-align: center;
  padding: 40px 20px;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 6px;
}

.error-code {
  font-size: 4rem;
  font-weight: 700;
  color: var(--color-cinnabar);
  line-height: 1;
  margin-bottom: 12px;
}

.error-title {
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 16px;
}

.error-desc {
  font-size: 0.95rem;
  color: var(--text-body);
  margin-bottom: 28px;
}

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

/* ==========================================================================
   响应式断点系统 (严格针对 375, 390, 430, 768, 1024, 1440)
   ========================================================================== */

/* 平板与小型桌面 (≤ 1024px) */
@media (max-width: 1024px) {
  .nav-menu {
    gap: 12px;
  }
  .nav-link {
    font-size: 0.88rem;
  }
  .pricing-row {
    grid-template-columns: 50px 130px 100px 120px 1fr 90px 120px;
    gap: 10px;
    padding: 16px 18px;
  }
  .device-list {
    grid-template-columns: repeat(2, 1fr);
  }
  .troubleshoot-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-top {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 24px;
  }
}

/* 平板竖屏 (≤ 768px) */
@media (max-width: 768px) {
  .nav-menu, .header-cta {
    display: none;
  }
  .mobile-menu-btn {
    display: inline-flex;
  }
  
  .hero-section {
    max-height: none;
    min-height: auto;
    padding: 40px 0 32px;
  }

  .hero-h1 {
    font-size: 1.7rem;
  }

  .hero-slogan {
    font-size: 1.25rem;
  }

  .hero-actions {
    flex-direction: column;
    gap: 10px;
    width: 100%;
  }

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

  /* 移动端云路：纵向显示 */
  .cloud-path {
    flex-direction: column;
    gap: 16px;
    padding-left: 36px;
  }

  .cloud-path::before {
    top: 10px;
    bottom: 10px;
    left: 48px;
    right: auto;
    width: 2px;
    height: auto;
  }

  .cloud-path-node {
    text-align: left;
    max-width: 100%;
    display: flex;
    align-items: flex-start;
    gap: 14px;
  }

  .path-node-dot {
    margin: 0;
    flex-shrink: 0;
  }

  /* 01 通行步骤纵向 */
  .steps-container {
    flex-direction: column;
    gap: 12px;
  }

  .step-arrow-divider {
    transform: rotate(90deg);
    padding: 2px 0;
  }

  /* 03 节点目的地堆叠 */
  .dest-index-row {
    grid-template-columns: 1fr;
    gap: 6px;
    padding: 14px 16px;
  }

  /* 04 AI工具卡片 */
  .ai-tool-grid {
    grid-template-columns: 1fr;
  }

  /* 05 流媒体列表 */
  .media-row {
    grid-template-columns: 1fr;
    gap: 6px;
    padding: 14px 16px;
  }

  /* 06 设备清单 */
  .device-list {
    grid-template-columns: 1fr;
  }

  /* 07 套餐：桌面表格隐藏，显示移动端指定顺序卡片 */
  .pricing-table-container {
    display: none;
  }

  .pricing-mobile-cards {
    display: flex;
    flex-direction: column;
    gap: 14px;
  }

  .pricing-mobile-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 18px;
  }

  .pricing-mobile-card.featured {
    background-color: var(--bg-light-cyan);
    border: 1px solid var(--color-moqing);
    border-left: 4px solid var(--color-moqing);
  }

  .mobile-card-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
  }

  .mobile-card-name {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-main);
  }

  .mobile-card-price {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-cinnabar);
  }

  .mobile-card-detail {
    font-size: 0.88rem;
    color: var(--text-body);
    margin-bottom: 14px;
    line-height: 1.5;
  }

  .mobile-card-btn {
    width: 100%;
  }

  /* 08 评测导读块 */
  .review-lead-highlights {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  /* 09 手册目录 */
  .handbook-row {
    grid-template-columns: 40px 1fr;
    padding: 14px 16px;
    gap: 12px;
  }

  .handbook-action {
    grid-column: 2 / -1;
    align-items: flex-start;
    flex-direction: row;
    justify-content: space-between;
    margin-top: 6px;
  }

  /* 10 排障清单 */
  .troubleshoot-grid {
    grid-template-columns: 1fr;
  }

  /* 文章页排版 */
  .article-card {
    padding: 24px 18px;
  }

  .article-title {
    font-size: 1.55rem;
  }

  .article-cta-box {
    flex-direction: column;
    text-align: center;
  }

  .article-nav-links {
    flex-direction: column;
  }

  .article-nav-item {
    max-width: 100%;
  }

  /* 页脚移动端堆叠 */
  .footer-top {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
}

/* 手机精细适配 (375px, 390px, 430px) */
@media (max-width: 430px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .brand-title {
    font-size: 1.15rem;
  }
  .brand-subtitle {
    display: none;
  }
  .hero-h1 {
    font-size: 1.45rem;
  }
  .hero-slogan {
    font-size: 1.15rem;
  }
  .section {
    padding: 48px 0;
  }
  .section-title {
    font-size: 1.35rem;
  }
}

/* 减弱动画需求适配 */
@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;
  }
}