/* ==========================================================================
   龙猫云官网 (totorocloud.link) - 现代 Solarpunk 视觉与高保真交互样式表
   设计语言：自然有机绿 + 科技明阳黄 + 极简圆角卡片 + 呼吸微动效
   ========================================================================== */

:root {
  /* 品牌色彩系统 (Solarpunk) */
  --primary: #10B981;
  --primary-hover: #059669;
  --primary-dark: #047857;
  --primary-light: #D1FAE5;
  --primary-subtle: #ECFDF5;
  
  --sun-gold: #F59E0B;
  --sun-light: #FEF3C7;
  --sun-glow: rgba(245, 158, 11, 0.25);
  
  --accent-orange: #F97316;
  --accent-coral: #EF4444;
  --accent-cyan: #06B6D4;
  
  /* 界面中性色 */
  --bg-main: #F7FAF8;
  --bg-card: #FFFFFF;
  --bg-card-subtle: #F0FDF4;
  --bg-nav: rgba(255, 255, 255, 0.92);
  
  --text-title: #0F291E;
  --text-body: #2D3748;
  --text-muted: #64748B;
  --text-light: #94A3B8;
  
  --border-light: rgba(16, 185, 129, 0.12);
  --border-card: #E2E8F0;
  --border-hover: rgba(16, 185, 129, 0.35);
  
  /* 阴影层级 */
  --shadow-sm: 0 2px 8px rgba(15, 41, 30, 0.04);
  --shadow-md: 0 8px 24px rgba(16, 185, 129, 0.08);
  --shadow-lg: 0 16px 40px rgba(16, 185, 129, 0.12);
  --shadow-solarpunk: 0 20px 45px -10px rgba(16, 185, 129, 0.15), 0 0 1px rgba(0, 0, 0, 0.05);
  --shadow-sun: 0 0 25px rgba(245, 158, 11, 0.4);

  /* 几何半径 */
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 28px;
  --radius-full: 9999px;

  /* 动画缓动 */
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-bounce: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background-color: var(--bg-main);
  color: var(--text-body);
  line-height: 1.65;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* 动态背景光晕装饰 */
.bg-ambient-light {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

.ambient-blob-1 {
  position: absolute;
  top: -10%;
  right: -5%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.14) 0%, rgba(16, 185, 129, 0) 70%);
  filter: blur(60px);
  animation: floatSlow 18s ease-in-out infinite alternate;
}

.ambient-blob-2 {
  position: absolute;
  top: 20%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.1) 0%, rgba(245, 158, 11, 0) 70%);
  filter: blur(50px);
  animation: floatSlow 22s ease-in-out infinite alternate-reverse;
}

.ambient-blob-3 {
  position: absolute;
  bottom: 10%;
  right: 15%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.08) 0%, rgba(6, 182, 212, 0) 70%);
  filter: blur(70px);
}

@keyframes floatSlow {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(30px, 40px) scale(1.08); }
  100% { transform: translate(-20px, -30px) scale(0.95); }
}

/* 通用容器 */
.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

.container-narrow {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 排版工具 */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-title);
  font-weight: 700;
  line-height: 1.3;
}

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

/* 顶部导航栏 (Navbar) */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg-nav);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-light);
  transition: all var(--transition-normal);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--text-title);
}

.brand-icon-wrap {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, #10B981, #059669);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
  position: relative;
  overflow: hidden;
}

.brand-icon-wrap::after {
  content: '';
  position: absolute;
  top: -40%;
  right: -40%;
  width: 32px;
  height: 32px;
  background: rgba(254, 243, 199, 0.5);
  border-radius: 50%;
}

.brand-icon-wrap svg {
  width: 26px;
  height: 26px;
  fill: #FFFFFF;
}

.brand-badge {
  font-size: 0.72rem;
  font-weight: 600;
  background: var(--sun-light);
  color: #B45309;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  margin-left: 6px;
  letter-spacing: 0.5px;
}

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

.nav-link {
  font-size: 0.96rem;
  font-weight: 500;
  color: #334155;
  padding: 6px 0;
  position: relative;
  transition: color var(--transition-fast);
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: width var(--transition-normal);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.nav-cta-group {
  display: flex;
  align-items: center;
  gap: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 10px 22px;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  outline: none;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #10B981, #059669);
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #059669, #047857);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.45);
  transform: translateY(-2px);
  color: #FFFFFF;
}

.btn-secondary {
  background: #FFFFFF;
  color: var(--text-title);
  border: 1px solid var(--border-card);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-sun {
  background: linear-gradient(135deg, #F59E0B, #D97706);
  color: #FFFFFF;
  box-shadow: 0 4px 16px rgba(245, 158, 11, 0.35);
}

.btn-sun:hover {
  background: linear-gradient(135deg, #D97706, #B45309);
  transform: translateY(-2px);
  box-shadow: 0 6px 22px rgba(245, 158, 11, 0.5);
  color: #FFFFFF;
}

.btn-lg {
  padding: 14px 34px;
  font-size: 1.05rem;
  border-radius: var(--radius-full);
}

.btn-sm {
  padding: 6px 16px;
  font-size: 0.85rem;
}

/* 移动端菜单按钮 */
.menu-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--text-title);
}

/* Hero 首屏区 (如图1 Solarpunk 概念) */
.hero-section {
  padding: 60px 0 80px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 48px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-card);
  border: 1px solid rgba(16, 185, 129, 0.2);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  color: var(--primary-dark);
  font-weight: 600;
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
}

.pulse-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: pulseGreen 2s infinite;
}

@keyframes pulseGreen {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.hero-title {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.18;
  margin-bottom: 20px;
  letter-spacing: -0.8px;
}

.hero-title-highlight {
  background: linear-gradient(135deg, #10B981 0%, #059669 40%, #0D9488 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-body);
  line-height: 1.75;
  margin-bottom: 32px;
  max-width: 580px;
}

.hero-features-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 36px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  color: #1F2937;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.02);
}

.chip svg {
  color: var(--primary);
  width: 15px;
  height: 15px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 32px;
}

.hero-trust-bar {
  display: flex;
  align-items: center;
  gap: 24px;
  padding-top: 20px;
  border-top: 1px solid rgba(226, 232, 240, 0.8);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.trust-item strong {
  color: var(--text-title);
  font-weight: 700;
}

/* 图1 Solarpunk 核心特色卡片还原与视觉展示 */
.solarpunk-showcase {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.solarpunk-card-main {
  width: 100%;
  max-width: 420px;
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  box-shadow: var(--shadow-solarpunk);
  border: 1px solid rgba(16, 185, 129, 0.15);
  position: relative;
  transition: transform var(--transition-bounce), box-shadow var(--transition-normal);
}

.solarpunk-card-main:hover {
  transform: translateY(-6px);
  box-shadow: 0 28px 55px -12px rgba(16, 185, 129, 0.22);
}

.solarpunk-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 22px;
}

.solarpunk-card-title {
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: #2F5943;
}

.solarpunk-sun {
  width: 58px;
  height: 58px;
  background: radial-gradient(circle, #FBBF24 45%, #F59E0B 100%);
  border-radius: 50%;
  box-shadow: 0 0 0 10px rgba(254, 243, 199, 0.7), var(--shadow-sun);
  position: relative;
  animation: sunGlow 3s ease-in-out infinite alternate;
}

@keyframes sunGlow {
  0% { transform: scale(1); box-shadow: 0 0 0 8px rgba(254, 243, 199, 0.6), 0 0 20px rgba(245, 158, 11, 0.3); }
  100% { transform: scale(1.05); box-shadow: 0 0 0 14px rgba(254, 243, 199, 0.85), 0 0 35px rgba(245, 158, 11, 0.5); }
}

.solarpunk-tagline {
  font-size: 1.05rem;
  color: #557867;
  margin-bottom: 28px;
  font-weight: 500;
}

.solarpunk-stats-box {
  background: var(--bg-card-subtle);
  border: 1px solid rgba(16, 185, 129, 0.18);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.solarpunk-stats-item {
  display: flex;
  flex-direction: column;
}

.solarpunk-stats-label {
  font-size: 0.75rem;
  color: #64748B;
  margin-bottom: 2px;
}

.solarpunk-stats-val {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-title);
}

.btn-solarpunk-start {
  width: 100%;
  background: linear-gradient(90deg, #02B38A 0%, #0093D6 100%);
  color: #FFFFFF;
  font-size: 1.15rem;
  font-weight: 700;
  padding: 15px 0;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  box-shadow: 0 6px 20px rgba(0, 168, 150, 0.35);
  transition: all var(--transition-fast);
}

.btn-solarpunk-start:hover {
  background: linear-gradient(90deg, #009E78 0%, #0081BD 100%);
  box-shadow: 0 8px 25px rgba(0, 168, 150, 0.45);
  transform: translateY(-2px);
  color: #FFFFFF;
}

/* 浮动微装饰徽章 */
.floating-badge-1 {
  position: absolute;
  top: -16px;
  left: -20px;
  background: #FFFFFF;
  border-radius: var(--radius-md);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-light);
  animation: floatMini 4s ease-in-out infinite;
}

.floating-badge-2 {
  position: absolute;
  bottom: -18px;
  right: -15px;
  background: #FFFFFF;
  border-radius: var(--radius-md);
  padding: 10px 18px;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-light);
  animation: floatMini 4.5s ease-in-out infinite alternate;
}

@keyframes floatMini {
  0% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
  100% { transform: translateY(0); }
}

/* 核心卖点网格 (稳定、安全、高速、便宜、高性价比、IPLC专线、全平台支持) */
.section {
  padding: 70px 0;
}

.section-alt {
  background: #FFFFFF;
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 50px;
}

.section-tag {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--primary);
  background: var(--primary-subtle);
  padding: 4px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.25rem;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.65;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 26px;
}

.feature-card {
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  border: 1px solid var(--border-card);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(16, 185, 129, 0.35);
}

.feature-icon {
  width: 54px;
  height: 54px;
  border-radius: 18px;
  background: var(--primary-subtle);
  color: var(--primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  transition: transform var(--transition-bounce);
}

.feature-card:hover .feature-icon {
  transform: scale(1.1) rotate(4deg);
  background: var(--primary);
  color: #FFFFFF;
}

.feature-icon svg {
  width: 28px;
  height: 28px;
}

.feature-title {
  font-size: 1.25rem;
  margin-bottom: 12px;
}

.feature-desc {
  font-size: 0.95rem;
  color: var(--text-body);
  line-height: 1.65;
}

/* ==========================================================================
   套餐价格 (图2 高保真精确还原)
   龙猫·启航版 (¥15/月) | 龙猫·飞跃版 (¥25/月 - 店长推荐) | 龙猫·极致版 (¥45/月)
   ========================================================================== */
.pricing-section {
  padding: 80px 0;
  position: relative;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
  max-width: 1140px;
  margin: 0 auto;
}

.pricing-card {
  background: #FFFFFF;
  border-radius: 28px;
  border: 1px solid #D6E4DC;
  padding: 44px 32px 36px;
  display: flex;
  flex-direction: column;
  position: relative;
  box-shadow: 0 10px 30px rgba(16, 185, 129, 0.05);
  transition: all var(--transition-normal);
}

.pricing-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 45px rgba(16, 185, 129, 0.14);
}

/* 推荐款 (图2 中间卡片 飞跃版 带店长推荐斜切角标) */
.pricing-card.featured {
  border: 2px solid #70AD47;
  box-shadow: 0 15px 40px rgba(112, 173, 71, 0.16);
  overflow: hidden;
}

.featured-ribbon {
  position: absolute;
  top: 24px;
  right: -38px;
  width: 150px;
  background: linear-gradient(135deg, #F97316, #EA580C);
  color: #FFFFFF;
  font-size: 0.85rem;
  font-weight: 700;
  text-align: center;
  padding: 6px 0;
  transform: rotate(45deg);
  box-shadow: 0 2px 10px rgba(234, 88, 12, 0.35);
  letter-spacing: 1px;
}

.pricing-header {
  text-align: center;
  margin-bottom: 24px;
}

.pricing-name {
  font-size: 1.35rem;
  font-weight: 800;
  color: #1F2937;
  margin-bottom: 16px;
}

.pricing-cost {
  display: flex;
  align-items: baseline;
  justify-content: center;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #70AD47; /* 图2 原色绿 */
  font-weight: 800;
  line-height: 1;
}

.pricing-currency {
  font-size: 1.85rem;
  margin-right: 2px;
}

.pricing-amount {
  font-size: 3.5rem;
  letter-spacing: -1px;
}

.pricing-period {
  font-size: 1.15rem;
  font-weight: 500;
  color: #4B5563;
  margin-left: 4px;
}

.pricing-features-list {
  list-style: none;
  margin: 20px 0 36px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  flex-grow: 1;
}

.pricing-feature-item {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.98rem;
  color: #374151;
  font-weight: 500;
}

/* 图2 特征麦穗/绿叶图标 */
.pricing-leaf-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: #70AD47;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pricing-leaf-icon svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.btn-pricing {
  width: 100%;
  background: #70AD47; /* 图2 绿按钮 */
  color: #FFFFFF;
  font-size: 1.15rem;
  font-weight: 700;
  padding: 13px 0;
  border-radius: var(--radius-full);
  text-align: center;
  display: block;
  box-shadow: 0 4px 14px rgba(112, 173, 71, 0.35);
  transition: all var(--transition-fast);
}

.btn-pricing:hover {
  background: #5D9538;
  box-shadow: 0 6px 20px rgba(112, 173, 71, 0.45);
  transform: translateY(-2px);
  color: #FFFFFF;
}

/* 客户端下载区域 (Clients) */
.clients-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 22px;
}

.client-card {
  background: #FFFFFF;
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.client-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.client-icon {
  width: 60px;
  height: 60px;
  border-radius: 18px;
  background: var(--primary-subtle);
  color: var(--primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.client-icon svg {
  width: 32px;
  height: 32px;
}

.client-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.client-sub {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.client-tools-badge {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 22px;
}

.tool-pill {
  font-size: 0.76rem;
  background: #F1F5F9;
  color: #475569;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-weight: 500;
}

/* AI 工具解锁展示区 */
.ai-tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 20px;
}

.ai-card {
  background: #FFFFFF;
  border-radius: var(--radius-md);
  padding: 24px 20px;
  border: 1px solid var(--border-card);
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.ai-card:hover {
  border-color: rgba(16, 185, 129, 0.4);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.ai-icon-box {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #FFFFFF;
  flex-shrink: 0;
}

.ai-meta h4 {
  font-size: 1.05rem;
  margin-bottom: 4px;
}

.ai-status {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.78rem;
  color: var(--primary-dark);
  font-weight: 600;
}

.ai-status::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
}

/* 测速与网络监控小部件 */
.speed-test-widget {
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  padding: 36px;
  border: 1px solid var(--border-card);
  box-shadow: var(--shadow-md);
  margin-top: 40px;
}

.speed-nodes-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
}

.speed-nodes-table th, .speed-nodes-table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid #EDF2F7;
  font-size: 0.92rem;
}

.speed-nodes-table th {
  font-weight: 700;
  color: var(--text-title);
  background: #F8FAFC;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
}

.status-badge.online {
  background: #DCFCE7;
  color: #15803D;
}

/* 知识库与9篇文章精选展示 */
.articles-preview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.article-card {
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  border: 1px solid var(--border-card);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
  position: relative;
}

.article-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
}

.article-category {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-subtle);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  margin-bottom: 14px;
  width: fit-content;
}

.article-title {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 12px;
  color: var(--text-title);
}

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

.article-excerpt {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
}

.article-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid #F1F5F9;
  font-size: 0.82rem;
  color: var(--text-light);
}

.article-link-cta {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-weight: 600;
  color: var(--primary);
}

/* 手风琴常见问题 FAQ */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: #FFFFFF;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-card);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition-fast);
}

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

.faq-question {
  width: 100%;
  padding: 22px 26px;
  text-align: left;
  background: transparent;
  border: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-title);
  gap: 16px;
}

.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--bg-main);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform var(--transition-bounce), background-color var(--transition-fast);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
  background: var(--primary);
  color: #FFFFFF;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease-out;
  padding: 0 26px;
  color: var(--text-body);
  font-size: 0.95rem;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  padding-bottom: 22px;
}

/* 全站文章页 (Article Detail Page) 专项样式 */
.article-header-section {
  padding: 60px 0 40px;
  background: linear-gradient(180deg, rgba(209, 250, 229, 0.4) 0%, rgba(247, 250, 248, 0) 100%);
  border-bottom: 1px solid var(--border-light);
}

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

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

.article-page-title {
  font-size: 2.5rem;
  line-height: 1.25;
  margin-bottom: 20px;
}

.article-meta-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.article-meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.article-body-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 48px;
  padding: 50px 0 80px;
  align-items: start;
}

.article-toc {
  position: sticky;
  top: 96px;
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  padding: 24px;
  border: 1px solid var(--border-card);
  box-shadow: var(--shadow-sm);
}

.toc-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid #F1F5F9;
  display: flex;
  align-items: center;
  gap: 8px;
}

.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.88rem;
}

.toc-link {
  color: var(--text-body);
  display: block;
  line-height: 1.4;
  transition: color var(--transition-fast);
}

.toc-link:hover, .toc-link.active {
  color: var(--primary);
  font-weight: 600;
  padding-left: 4px;
}

.article-content {
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  padding: 48px 44px;
  border: 1px solid var(--border-card);
  box-shadow: var(--shadow-sm);
  font-size: 1.05rem;
  line-height: 1.85;
}

.article-content h2 {
  font-size: 1.75rem;
  margin: 40px 0 18px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--primary-subtle);
  position: relative;
}

.article-content h2::before {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 50px;
  height: 2px;
  background: var(--primary);
}

.article-content h3 {
  font-size: 1.35rem;
  margin: 28px 0 14px;
  color: #1E3A2B;
}

.article-content p {
  margin-bottom: 20px;
  color: #334155;
}

.article-content ul, .article-content ol {
  margin: 0 0 24px 24px;
  color: #334155;
}

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

.article-content blockquote {
  background: var(--primary-subtle);
  border-left: 4px solid var(--primary);
  padding: 16px 20px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 24px 0;
  font-style: normal;
  color: #065F46;
}

.article-content .highlight-box {
  background: #FEF9C3;
  border-left: 4px solid #CA8A04;
  padding: 16px 20px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 24px 0;
  color: #854D0E;
}

.article-content .cta-box {
  background: linear-gradient(135deg, #ECFDF5, #F0FDF4);
  border: 2px dashed rgba(16, 185, 129, 0.4);
  border-radius: var(--radius-lg);
  padding: 30px;
  text-align: center;
  margin: 36px 0;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
}

.article-content th, .article-content td {
  border: 1px solid #E2E8F0;
  padding: 12px 16px;
  text-align: left;
  font-size: 0.95rem;
}

.article-content th {
  background: #F8FAFC;
  font-weight: 700;
  color: var(--text-title);
}

.article-tags-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid #F1F5F9;
}

.tag-badge {
  font-size: 0.8rem;
  background: #F1F5F9;
  color: #475569;
  padding: 4px 12px;
  border-radius: var(--radius-full);
}

/* 底部悬浮快捷进站条 (Sticky CTA Bar) */
.floating-cta-bar {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(15, 41, 30, 0.94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-radius: var(--radius-full);
  padding: 10px 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.25);
  z-index: 999;
  border: 1px solid rgba(255, 255, 255, 0.15);
  animation: slideUp 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideUp {
  from { transform: translate(-50%, 60px); opacity: 0; }
  to { transform: translate(-50%, 0); opacity: 1; }
}

.floating-cta-text {
  color: #FFFFFF;
  font-size: 0.92rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* 页脚 (Footer) */
.footer {
  background: #0D1F17;
  color: #94A3B8;
  padding: 70px 0 30px;
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-brand h3 {
  color: #FFFFFF;
  font-size: 1.35rem;
  margin-bottom: 14px;
}

.footer-brand p {
  line-height: 1.7;
  max-width: 320px;
  margin-bottom: 20px;
}

.footer-col h4 {
  color: #FFFFFF;
  font-size: 1.05rem;
  margin-bottom: 18px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

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

.footer-bottom {
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.85rem;
}

/* 响应式适配 */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }
  .hero-title {
    font-size: 2.6rem;
  }
  .hero-desc {
    margin: 0 auto 30px;
  }
  .hero-features-chips, .hero-actions {
    justify-content: center;
  }
  .hero-trust-bar {
    justify-content: center;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
  }
  .articles-preview-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .article-body-layout {
    grid-template-columns: 1fr;
  }
  .article-toc {
    display: none; /* 移动端隐藏侧边栏目录 */
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links, .nav-cta-group {
    display: none;
  }
  .menu-toggle {
    display: block;
  }
  .hero-title {
    font-size: 2.1rem;
  }
  .articles-preview-grid {
    grid-template-columns: 1fr;
  }
  .article-content {
    padding: 28px 20px;
  }
  .floating-cta-bar {
    width: 90%;
    justify-content: space-between;
    padding: 8px 16px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}