/* ==========================================================================
   悠兔机场 智能节点策略台 - 全站样式表
   配色标准：
   主背景: #FFFFFF | 浅背景: #F6F8FA | 浅青: #EDF8F6 | 浅蓝: #EEF4FB
   主文字: #17212B | 正文: #4F5A64 | 次级: #818A92
   主青: #2E9E91 | 主蓝: #3574D6 | 橙色: #D9834C | 边框: #DEE5E7
   底部背景: #EEF3F1
   ========================================================================== */

:root {
  --color-bg-main: #FFFFFF;
  --color-bg-light: #F6F8FA;
  --color-bg-cyan-light: #EDF8F6;
  --color-bg-blue-light: #EEF4FB;
  --color-bg-footer: #EEF3F1;
  --color-text-main: #17212B;
  --color-text-body: #4F5A64;
  --color-text-muted: #818A92;
  --color-primary-cyan: #2E9E91;
  --color-primary-blue: #3574D6;
  --color-accent-orange: #D9834C;
  --color-border: #DEE5E7;
  --color-border-hover: #BFCDD3;
  --color-card-shadow: 0 4px 16px rgba(23, 33, 43, 0.05);
  --color-card-shadow-hover: 0 10px 28px rgba(46, 158, 145, 0.12);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
  --font-mono: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-pill: 9999px;
  
  --max-width: 1200px;
  --transition: all 0.22s ease-in-out;
}

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

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

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg-main);
  color: var(--color-text-body);
  line-height: 1.7;
  overflow-x: hidden;
  position: relative;
}

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

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

img, svg {
  vertical-align: middle;
}

/* 顶部通知栏 */
.top-notice-bar {
  background-color: var(--color-bg-cyan-light);
  border-bottom: 1px solid var(--color-border);
  font-size: 0.875rem;
  color: var(--color-text-main);
  padding: 8px 16px;
  text-align: center;
}

.top-notice-bar a {
  color: var(--color-primary-cyan);
  font-weight: 600;
  margin-left: 6px;
}

/* 导航栏 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.header-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-logo-icon {
  width: 36px;
  height: 36px;
  background-color: #EDF8F6;
  border: 1px solid #CFE8E4;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: var(--transition);
}

.brand-logo:hover .brand-logo-icon {
  border-color: #26A69A;
  background-color: #E6F5F2;
}

.brand-text-wrap {
  display: flex;
  flex-direction: column;
  justify-content: center;
  line-height: 1.15;
}

.brand-title-row {
  display: flex;
  align-items: center;
  gap: 6px;
}

.brand-title {
  font-size: 21px;
  font-weight: 700;
  color: #17212B;
  letter-spacing: -0.01em;
  transition: var(--transition);
}

.brand-logo:hover .brand-title {
  color: #26A69A;
}

.brand-badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 1px 7px;
  border-radius: var(--radius-pill);
  background-color: var(--color-bg-cyan-light);
  color: var(--color-primary-cyan);
  border: 1px solid var(--color-primary-cyan);
  white-space: nowrap;
}

.brand-subtitle {
  font-size: 11px;
  font-weight: 500;
  color: #26A69A;
  margin-top: 2px;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-body);
  position: relative;
  padding: 4px 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--color-primary-cyan);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 9px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

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

.btn-primary:hover {
  background-color: #248277;
  color: #FFFFFF;
}

.btn-outline {
  background-color: #FFFFFF;
  border-color: var(--color-border);
  color: var(--color-text-main);
}

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

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--color-text-main);
}

/* 主容器 */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* Hero 区域：场景选择 Hero */
.hero-section {
  padding: 56px 0 36px;
  background: linear-gradient(180deg, #FFFFFF 0%, var(--color-bg-light) 100%);
  border-bottom: 1px solid var(--color-border);
  text-align: center;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-primary-cyan);
  background-color: var(--color-bg-cyan-light);
  border: 1px solid rgba(46, 158, 145, 0.25);
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 18px;
}

.hero-main-title {
  font-size: 2.75rem;
  font-weight: 800;
  color: var(--color-text-main);
  line-height: 1.25;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.hero-main-title .line-break {
  display: block;
}

/* 首页唯一 H1 样式融合 */
.hero-h1 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-primary-blue);
  margin-bottom: 14px;
  letter-spacing: 0.02em;
}

.hero-subtitle {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-main);
  background: var(--color-bg-blue-light);
  display: inline-block;
  padding: 6px 18px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(53, 116, 214, 0.2);
  margin-bottom: 20px;
}

.hero-desc {
  max-width: 780px;
  margin: 0 auto 30px;
  font-size: 1.0625rem;
  color: var(--color-text-body);
  line-height: 1.8;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

/* 横向策略轨道 */
.scenario-rail-wrapper {
  margin-top: 30px;
  padding: 18px 20px;
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--color-card-shadow);
}

.scenario-rail-header {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 14px;
  text-align: left;
}

.scenario-rail {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}

.scenario-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 14px 10px;
  background-color: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
}

.scenario-item:hover {
  border-color: var(--color-primary-cyan);
  background-color: var(--color-bg-cyan-light);
  transform: translateY(-2px);
}

.scenario-item.active {
  border-color: var(--color-primary-cyan);
  background-color: var(--color-bg-cyan-light);
  box-shadow: 0 4px 12px rgba(46, 158, 145, 0.15);
}

.scenario-node-indicator {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--color-text-muted);
  margin-bottom: 8px;
  transition: var(--transition);
}

.scenario-item:hover .scenario-node-indicator,
.scenario-item.active .scenario-node-indicator {
  background-color: var(--color-primary-cyan);
  box-shadow: 0 0 0 3px rgba(46, 158, 145, 0.25);
}

.scenario-label {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 4px;
}

.scenario-sub {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* 通用模块样式 */
.section-block {
  padding: 56px 0;
  border-bottom: 1px solid var(--color-border);
}

.section-block:nth-child(even) {
  background-color: var(--color-bg-light);
}

.section-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-primary-cyan);
  background-color: var(--color-bg-cyan-light);
  border: 1px solid rgba(46, 158, 145, 0.2);
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
}

.section-title {
  font-size: 1.875rem;
  font-weight: 800;
  color: var(--color-text-main);
  margin-bottom: 14px;
  line-height: 1.35;
}

.section-direct-answer {
  font-size: 1.0625rem;
  color: var(--color-text-body);
  background-color: #FFFFFF;
  border-left: 4px solid var(--color-primary-cyan);
  padding: 16px 20px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: 24px;
  border-top: 1px solid var(--color-border);
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

/* 策略卡片与流程图 */
.strategy-visual-box {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-top: 20px;
  box-shadow: var(--color-card-shadow);
  transition: var(--transition);
}

.strategy-visual-box.highlight-focus {
  border-color: var(--color-primary-cyan);
  box-shadow: 0 0 0 3px rgba(46, 158, 145, 0.25);
}

/* 流程图 UI 节点链 */
.node-flow-chain {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.flow-step-item {
  flex: 1;
  min-width: 140px;
  background-color: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: center;
}

.flow-step-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background-color: var(--color-bg-cyan-light);
  color: var(--color-primary-cyan);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 8px;
}

.flow-step-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 4px;
}

.flow-step-desc {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.flow-arrow-indicator {
  color: var(--color-primary-cyan);
  font-weight: 800;
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.flow-result-item {
  flex: 1.4;
  min-width: 200px;
  background-color: var(--color-bg-cyan-light);
  border: 1px solid rgba(46, 158, 145, 0.3);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: center;
}

.flow-result-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  color: #FFFFFF;
  background-color: var(--color-primary-cyan);
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  margin-bottom: 6px;
}

.flow-result-title {
  font-size: 1.0625rem;
  font-weight: 800;
  color: var(--color-text-main);
  margin-bottom: 4px;
}

.flow-result-desc {
  font-size: 0.8125rem;
  color: var(--color-text-body);
}

/* 运营商专线匹配流 */
.carrier-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}

.carrier-card {
  background-color: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.carrier-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--color-primary-blue);
}

.carrier-info h4 {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-text-main);
}

.carrier-info p {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.down-arrow-bar {
  text-align: center;
  margin: 10px 0 16px;
  color: var(--color-primary-blue);
  font-size: 1.5rem;
}

.target-line-box {
  background-color: var(--color-bg-blue-light);
  border: 1px solid rgba(53, 116, 214, 0.25);
  border-radius: var(--radius-md);
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.target-line-title {
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--color-text-main);
}

.target-line-tags {
  display: flex;
  gap: 8px;
}

.tag-pill {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  color: var(--color-text-main);
}

/* 策略标尺 (03 动态倍率) */
.scale-wrapper {
  margin: 24px 0 16px;
  padding: 24px;
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.scale-track {
  height: 8px;
  background: linear-gradient(90deg, var(--color-primary-cyan) 0%, var(--color-primary-blue) 50%, var(--color-accent-orange) 100%);
  border-radius: var(--radius-pill);
  position: relative;
  margin: 20px 0 30px;
}

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

.scale-point-card {
  background-color: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px;
}

.scale-point-card.cyan-card {
  border-top: 3px solid var(--color-primary-cyan);
}

.scale-point-card.blue-card {
  border-top: 3px solid var(--color-primary-blue);
}

.scale-point-card.orange-card {
  border-top: 3px solid var(--color-accent-orange);
}

.scale-point-header {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.scale-point-desc {
  font-size: 0.8125rem;
  color: var(--color-text-body);
}

/* 多入口与负载均衡 UI */
.ingress-balance-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 24px;
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.ingress-row {
  display: flex;
  gap: 16px;
  width: 100%;
  justify-content: center;
}

.ingress-badge-item {
  flex: 1;
  max-width: 220px;
  background-color: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 12px;
  text-align: center;
  font-weight: 700;
  color: var(--color-text-main);
}

.dispatch-node-box {
  width: 100%;
  max-width: 520px;
  background-color: var(--color-bg-cyan-light);
  border: 1px solid rgba(46, 158, 145, 0.3);
  border-radius: var(--radius-md);
  padding: 14px 20px;
  text-align: center;
}

.dispatch-node-title {
  font-size: 0.9375rem;
  font-weight: 800;
  color: var(--color-primary-cyan);
  margin-bottom: 4px;
}

.dispatch-node-desc {
  font-size: 0.8125rem;
  color: var(--color-text-body);
}

.routes-target-row {
  display: flex;
  gap: 16px;
  width: 100%;
  justify-content: center;
}

.route-target-pill {
  flex: 1;
  max-width: 220px;
  background-color: var(--color-bg-blue-light);
  border: 1px solid rgba(53, 116, 214, 0.25);
  border-radius: var(--radius-md);
  padding: 12px;
  text-align: center;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-primary-blue);
}

/* AI 与流媒体网格 */
.feature-tools-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 20px;
}

.tool-card {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: var(--transition);
}

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

.tool-icon-box {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background-color: var(--color-bg-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: var(--color-primary-cyan);
}

.tool-info h4 {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 2px;
}

.tool-info p {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* 客户端对比架构 */
.client-compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 20px;
}

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

.client-card.official-card {
  border-top: 4px solid var(--color-primary-cyan);
  background: linear-gradient(180deg, var(--color-bg-cyan-light) 0%, #FFFFFF 30%);
}

.client-card.third-card {
  border-top: 4px solid var(--color-primary-blue);
}

.client-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.client-card-title {
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--color-text-main);
}

.client-steps-list {
  list-style: none;
}

.client-step-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 12px;
  font-size: 0.9375rem;
  color: var(--color-text-body);
}

.client-step-bullet {
  color: var(--color-primary-cyan);
  font-weight: bold;
}

/* 套餐模块：场景 × 套餐矩阵 */
.pricing-matrix-section {
  padding: 60px 0;
  background-color: var(--color-bg-light);
  border-bottom: 1px solid var(--color-border);
}

.matrix-container {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin: 28px 0;
}

.matrix-card {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 22px 18px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition);
}

.matrix-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--color-card-shadow-hover);
  border-color: var(--color-primary-cyan);
}

.matrix-card.featured-plan {
  border-color: var(--color-primary-cyan);
  box-shadow: 0 6px 20px rgba(46, 158, 145, 0.16);
  border-width: 2px;
}

.featured-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-primary-cyan);
  color: #FFFFFF;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: var(--radius-pill);
  white-space: nowrap;
}

.backup-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-accent-orange);
  color: #FFFFFF;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: var(--radius-pill);
  white-space: nowrap;
}

.plan-target-scenario {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-primary-cyan);
  background-color: var(--color-bg-cyan-light);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  display: inline-block;
  margin-bottom: 12px;
  text-align: center;
}

.matrix-card.featured-plan .plan-target-scenario {
  background-color: rgba(46, 158, 145, 0.15);
}

.plan-name {
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--color-text-main);
  margin-bottom: 8px;
}

.plan-price-wrap {
  margin-bottom: 14px;
}

.plan-currency {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text-main);
}

.plan-price-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-text-main);
  line-height: 1;
}

.plan-price-period {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.plan-traffic-highlight {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-text-main);
  padding: 8px 12px;
  background-color: var(--color-bg-light);
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  text-align: center;
}

.plan-features-list {
  list-style: none;
  font-size: 0.8125rem;
  color: var(--color-text-body);
  margin-bottom: 20px;
  flex-grow: 1;
}

.plan-features-list li {
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.plan-features-list li::before {
  content: "✓";
  color: var(--color-primary-cyan);
  font-weight: 800;
}

/* 套餐数据表格 */
.pricing-table-wrap {
  margin-top: 36px;
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  box-shadow: var(--color-card-shadow);
}

.pricing-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9375rem;
}

.pricing-table th,
.pricing-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border);
}

.pricing-table th {
  background-color: var(--color-bg-light);
  font-weight: 700;
  color: var(--color-text-main);
  white-space: nowrap;
}

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

.pricing-table tr:hover td {
  background-color: var(--color-bg-cyan-light);
}

.table-tag-featured {
  display: inline-block;
  background-color: var(--color-primary-cyan);
  color: #FFFFFF;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
}

.table-tag-backup {
  display: inline-block;
  background-color: var(--color-accent-orange);
  color: #FFFFFF;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
}

.table-tag-standard {
  display: inline-block;
  background-color: var(--color-bg-light);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
}

/* 09 评测摘要卡片 */
.review-summary-card {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--color-card-shadow);
}

.review-summary-text {
  font-size: 1rem;
  color: var(--color-text-body);
  line-height: 1.8;
  margin-bottom: 24px;
}

.review-original-quote {
  background-color: var(--color-bg-cyan-light);
  border-left: 4px solid var(--color-primary-cyan);
  padding: 16px 20px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.9375rem;
  color: var(--color-text-main);
  margin-bottom: 24px;
  font-style: normal;
}

.review-quote-label {
  font-weight: 700;
  color: var(--color-primary-cyan);
  display: block;
  margin-bottom: 6px;
}

/* 使用指南：问题目录 */
.question-directory-wrap {
  margin-top: 24px;
}

.question-dir-list {
  list-style: none;
}

.question-dir-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  transition: var(--transition);
}

.question-dir-item:hover {
  border-color: var(--color-primary-cyan);
  background-color: var(--color-bg-cyan-light);
  transform: translateX(4px);
}

.question-dir-left {
  display: flex;
  align-items: center;
  gap: 18px;
}

.question-num {
  font-family: var(--font-mono);
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--color-primary-cyan);
  background-color: var(--color-bg-light);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.question-content h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 4px;
}

.question-content p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.question-link-btn {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-primary-blue);
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.question-dir-item:hover .question-link-btn {
  color: var(--color-primary-cyan);
}

/* 常见问题 FAQ 手风琴 */
.faq-accordion-wrap {
  margin-top: 24px;
}

.faq-item {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}

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

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 18px 24px;
  text-align: left;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-text-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.faq-icon {
  font-size: 1.25rem;
  color: var(--color-primary-cyan);
  transition: transform 0.2s ease;
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  display: none;
  padding: 0 24px 20px;
  font-size: 0.9375rem;
  color: var(--color-text-body);
  line-height: 1.8;
  border-top: 1px solid transparent;
}

.faq-item.open .faq-answer {
  display: block;
  border-top-color: var(--color-bg-light);
}

/* 底部区域：浅色背景 #EEF3F1 */
.site-footer {
  background-color: var(--color-bg-footer);
  border-top: 1px solid var(--color-border);
  padding: 50px 0 30px;
  color: var(--color-text-body);
  font-size: 0.875rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 32px;
  margin-bottom: 36px;
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 16px;
}

.footer-col p {
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}

.footer-links-list {
  list-style: none;
}

.footer-links-list li {
  margin-bottom: 10px;
}

.footer-links-list a {
  color: var(--color-text-body);
  transition: var(--transition);
}

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

.footer-bottom {
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  color: var(--color-text-muted);
  font-size: 0.8125rem;
}

.footer-friendly-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  color: var(--color-text-muted);
}

.footer-friendly-links a {
  color: var(--color-text-body);
  transition: var(--transition);
}

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

/* 文章详情页样式 */
.article-header {
  padding: 48px 0 24px;
  background-color: var(--color-bg-light);
  border-bottom: 1px solid var(--color-border);
}

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.breadcrumbs a {
  color: var(--color-text-muted);
}

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

.article-title {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--color-text-main);
  line-height: 1.3;
  margin-bottom: 16px;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.article-container {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 40px;
  padding: 48px 0;
}

.article-content {
  color: var(--color-text-body);
  line-height: 1.85;
  font-size: 1rem;
}

.article-content h2 {
  font-size: 1.625rem;
  font-weight: 800;
  color: var(--color-text-main);
  margin: 36px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.article-content h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin: 24px 0 12px;
}

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

.article-content ul, .article-content ol {
  margin: 0 0 20px 24px;
}

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

.article-content blockquote {
  background-color: var(--color-bg-cyan-light);
  border-left: 4px solid var(--color-primary-cyan);
  padding: 16px 20px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 24px 0;
  font-style: normal;
}

.article-sidebar {
  position: sticky;
  top: 90px;
  align-self: start;
}

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

.sidebar-title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.toc-list {
  list-style: none;
  font-size: 0.875rem;
}

.toc-list li {
  margin-bottom: 8px;
}

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

.toc-list a:hover {
  color: var(--color-primary-cyan);
}

/* 响应式适配 (375, 390, 430, 768, 1024, 1440) */
@media (max-width: 1024px) {
  .scenario-rail {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .matrix-container {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .carrier-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .article-container {
    grid-template-columns: 1fr;
  }
  
  .article-sidebar {
    display: none;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: #FFFFFF;
    flex-direction: column;
    padding: 20px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 10px 20px rgba(0,0,0,0.05);
    gap: 16px;
  }
  
  .nav-menu.open {
    display: flex;
  }
  
  .mobile-toggle {
    display: block;
  }
  
  .brand-logo {
    gap: 8px;
  }

  .brand-logo-icon {
    width: 32px;
    height: 32px;
  }

  .brand-logo-icon svg {
    width: 20px;
    height: 20px;
  }

  .brand-title {
    font-size: 19px;
  }

  .brand-subtitle {
    display: none;
  }
  
  .hero-main-title {
    font-size: 2rem;
  }
  
  .hero-h1 {
    font-size: 1rem;
  }
  
  /* 手机端横向滚动策略轨道 */
  .scenario-rail-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding: 14px;
  }
  
  .scenario-rail {
    display: flex;
    gap: 10px;
    min-width: 620px;
  }
  
  .scenario-item {
    flex: 1;
    min-width: 110px;
    padding: 12px 8px;
  }
  
  .matrix-container {
    grid-template-columns: 1fr;
  }
  
  .scale-points {
    grid-template-columns: 1fr;
  }
  
  .feature-tools-grid {
    grid-template-columns: 1fr;
  }
  
  .client-compare-grid {
    grid-template-columns: 1fr;
  }
  
  .ingress-row, .routes-target-row {
    flex-direction: column;
  }
  
  .ingress-badge-item, .route-target-pill {
    max-width: 100%;
  }
  
  .node-flow-chain {
    flex-direction: column;
  }
  
  .flow-arrow-indicator {
    transform: rotate(90deg);
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  
  .site-footer {
    height: auto;
    min-height: 250px;
  }
  
  .question-dir-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
}