/* ===================================================================
   锐祺教育 REACH EDUCATION 官方网站核心样式表
   DESIGN SYSTEM & MODERN TECH/EDUCATION PALETTE
=================================================================== */

:root {
  /* 主色调定义 */
  --primary-navy: #0B192C;
  --secondary-navy: #1E3E62;
  --accent-blue: #0066FF;
  --accent-cyan: #00D2FF;
  --accent-purple: #7928CA;
  --accent-gold: #FFB800;
  --accent-green: #10B981;
  --accent-network: #3B82F6;
  
  /* 中性色 */
  --bg-dark: #070F1B;
  --bg-card: rgba(19, 34, 56, 0.7);
  --bg-card-hover: rgba(27, 48, 80, 0.85);
  --bg-light: #F8FAFC;
  --bg-white: #FFFFFF;
  --border-glass: rgba(255, 255, 255, 0.12);
  --border-light: #E2E8F0;
  
  /* 文本颜色 */
  --text-main: #0F172A;
  --text-secondary: #475569;
  --text-muted: #94A3B8;
  --text-white: #FFFFFF;
  --text-white-dim: #CBD5E1;

  /* 阴影与转场 */
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 40px -15px rgba(0, 102, 255, 0.25);
  --shadow-glow: 0 0 25px rgba(0, 102, 255, 0.35);
  --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
}

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

html {
  scroll-behavior: smooth;
  font-family: 'Plus Jakarta Sans', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
  color: var(--text-main);
  background-color: var(--bg-light);
  line-height: 1.6;
}

body {
  overflow-x: hidden;
}

/* 容器与版心 */
.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 顶部公告栏 */
.top-announcement {
  background: linear-gradient(90deg, #091322, #102646);
  color: var(--text-white-dim);
  font-size: 0.82rem;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.announcement-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.announcement-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.badge-pill {
  background: rgba(0, 102, 255, 0.3);
  border: 1px solid rgba(0, 210, 255, 0.5);
  color: #60a5fa;
  font-size: 0.72rem;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-weight: 600;
}

.announcement-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.lang-switch {
  color: #93c5fd;
  cursor: pointer;
  font-weight: 500;
}

/* 导航栏设计 */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(11, 25, 44, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(7, 15, 27, 0.96);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  padding: 4px 0;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.nav-brand {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.brand-logo {
  height: 48px;
  width: auto;
  object-fit: contain;
  transition: var(--transition);
}

.logo-for-light {
  display: none;
}

/* 导航菜单列表 */
.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 28px;
}

.nav-link {
  color: #CBD5E1;
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition);
  padding: 6px 0;
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.nav-link:hover, .nav-link.active {
  color: #FFFFFF;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-blue));
  transition: var(--transition);
}

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

/* 下拉菜单 */
.has-dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 250px;
  background: #0D1C33;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  padding: 10px 0;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  list-style: none;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: var(--transition);
}

.has-dropdown:hover .dropdown-menu {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.dropdown-menu li a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  color: #E2E8F0;
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--transition);
}

.dropdown-menu li a:hover {
  background: rgba(0, 102, 255, 0.15);
  color: #38bdf8;
  padding-left: 24px;
}

.dropdown-menu li a i {
  color: var(--accent-cyan);
  width: 18px;
}

/* 导航操作区 */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: var(--radius-full);
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: var(--transition);
}

.btn-primary {
  background: linear-gradient(135deg, #0066FF 0%, #0052CC 100%);
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(0, 102, 255, 0.4);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #1A75FF 0%, #005EE6 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 102, 255, 0.55);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: #E2E8F0;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
  border-color: #FFFFFF;
  background: rgba(255, 255, 255, 0.1);
  color: #FFFFFF;
}

.btn-gradient {
  background: linear-gradient(135deg, #0066FF 0%, #00C6FF 100%);
  color: #FFFFFF;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.45);
}

.btn-gradient:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(0, 102, 255, 0.6);
  filter: brightness(1.08);
}

.btn-glass {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #FFFFFF;
}

.btn-glass:hover {
  background: rgba(255, 255, 255, 0.2);
  color: #FFFFFF;
}

.btn-edtech {
  background: linear-gradient(135deg, #7928CA 0%, #4F46E5 100%);
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(121, 40, 202, 0.4);
}

.btn-edtech:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(121, 40, 202, 0.55);
}

.btn-network {
  background: linear-gradient(135deg, #0284C7 0%, #0369A1 100%);
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.4);
}

.btn-network:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(2, 132, 199, 0.55);
}

.btn-lg {
  padding: 14px 30px;
  font-size: 1rem;
}

.mobile-toggle {
  display: none;
  background: transparent;
  border: none;
  color: #FFFFFF;
  font-size: 1.5rem;
  cursor: pointer;
}

/* ===================================================================
   HERO 区域
=================================================================== */
.hero-section {
  position: relative;
  background-color: var(--bg-dark);
  color: #FFFFFF;
  padding: 80px 0 100px;
  overflow: hidden;
}

.hero-bg-shapes {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  overflow: hidden;
}

.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.5;
}

.glow-orb-1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, #0052cc 0%, rgba(0, 82, 204, 0) 70%);
  top: -100px;
  right: 10%;
}

.glow-orb-2 {
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, #7928CA 0%, rgba(121, 40, 202, 0) 70%);
  bottom: 50px;
  left: 5%;
}

.glow-orb-3 {
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, #00D2FF 0%, rgba(0, 210, 255, 0) 70%);
  top: 40%;
  left: 40%;
  opacity: 0.25;
}

.grid-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
}

.hero-container {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 50px;
  position: relative;
  z-index: 10;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-full);
  padding: 6px 16px;
  font-size: 0.85rem;
  color: #93c5fd;
  margin-bottom: 24px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background-color: #00D2FF;
  border-radius: 50%;
  box-shadow: 0 0 10px #00D2FF;
  animation: pulseAnim 2s infinite;
}

@keyframes pulseAnim {
  0% { transform: scale(0.95); opacity: 0.7; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.7; }
}

.hero-title {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.gradient-text {
  background: linear-gradient(135deg, #00D2FF 0%, #0066FF 50%, #9D4EDD 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.08rem;
  line-height: 1.75;
  color: #CBD5E1;
  margin-bottom: 32px;
  max-width: 600px;
}

.hero-desc strong {
  color: #FFFFFF;
}

.hero-btns {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

/* 核心业务快速导航卡 */
.hero-quick-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.quick-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 16px 14px;
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  transition: var(--transition);
}

.quick-card:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(0, 210, 255, 0.4);
  transform: translateY(-3px);
}

.quick-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: rgba(0, 102, 255, 0.2);
  color: #38BDF8;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.quick-icon.edtech-icon {
  background: rgba(121, 40, 202, 0.2);
  color: #C084FC;
}

.quick-icon.tech-icon {
  background: rgba(14, 165, 233, 0.2);
  color: #38BDF8;
}

.quick-info h4 {
  font-size: 0.88rem;
  font-weight: 700;
  color: #F8FAFC;
  margin-bottom: 2px;
}

.quick-info p {
  font-size: 0.72rem;
  color: #94A3B8;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 140px;
}

/* 仪表盘卡片 */
.glass-dashboard-card {
  background: rgba(15, 28, 48, 0.75);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5), inset 0 1px 1px rgba(255, 255, 255, 0.2);
  overflow: hidden;
}

.dash-header {
  padding: 16px 20px;
  background: rgba(0, 0, 0, 0.2);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.dash-dots {
  display: flex;
  gap: 6px;
}

.dash-dots .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.dot.red { background-color: #EF4444; }
.dot.yellow { background-color: #F59E0B; }
.dot.green { background-color: #10B981; }

.dash-title {
  font-size: 0.84rem;
  color: #94A3B8;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.dash-badge {
  font-size: 0.72rem;
  background: rgba(16, 185, 129, 0.15);
  color: #34D399;
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.dash-body {
  padding: 24px;
}

.metric-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.metric-item {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
}

.metric-num {
  font-size: 1.8rem;
  font-weight: 800;
  color: #FFFFFF;
  line-height: 1.2;
  background: linear-gradient(90deg, #FFFFFF, #93C5FD);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.metric-label {
  font-size: 0.78rem;
  color: #94A3B8;
  margin-top: 4px;
}

.dash-status-box {
  background: rgba(0, 102, 255, 0.08);
  border: 1px solid rgba(0, 102, 255, 0.2);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.status-indicator {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
}

.status-indicator.online {
  background: #10B981;
  box-shadow: 0 0 10px #10B981;
}

.status-detail .status-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: #FFFFFF;
}

.status-detail .status-sub {
  font-size: 0.72rem;
  color: #94A3B8;
  margin-top: 2px;
}

.dash-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.dash-tags span {
  font-size: 0.72rem;
  background: rgba(255, 255, 255, 0.06);
  color: #CBD5E1;
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

/* ===================================================================
   通用章节排版
=================================================================== */
.section {
  padding: 90px 0;
  position: relative;
}

.section-badge {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-blue);
  background: rgba(0, 102, 255, 0.08);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 14px;
}

.section-badge.badge-white {
  background: rgba(255, 255, 255, 0.15);
  color: #93C5FD;
}

.section-title {
  font-size: 2.35rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.01em;
  line-height: 1.3;
  margin-bottom: 14px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 680px;
  line-height: 1.7;
  margin-bottom: 48px;
}

/* 关于锐祺 */
.about-section {
  background: #FFFFFF;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.about-card {
  background: var(--bg-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  transition: var(--transition);
}

.about-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: #BFDBFE;
}

.about-card-icon {
  width: 58px;
  height: 58px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #0066FF, #00C6FF);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 22px;
}

.about-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--primary-navy);
}

.about-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ===================================================================
   业务板块详细拆解
=================================================================== */
.services-section {
  background: #F8FAFC;
  padding-bottom: 40px;
}

.service-block {
  padding: 70px 0;
  border-top: 1px solid #E2E8F0;
}

.service-block:first-of-type {
  border-top: none;
}

.service-flex {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 60px;
}

.service-flex.reverse {
  grid-template-columns: 0.9fr 1.1fr;
}

.service-flex.reverse .service-text {
  order: 2;
}

.service-flex.reverse .service-visual {
  order: 1;
}

.service-label-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 700;
  color: #0066FF;
  background: rgba(0, 102, 255, 0.08);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 14px;
}

.service-label-tag.edtech-tag {
  color: #7928CA;
  background: rgba(121, 40, 202, 0.08);
}

.service-label-tag.tech-tag {
  color: #0284C7;
  background: rgba(2, 132, 199, 0.08);
}

.service-heading {
  font-size: 2.1rem;
  font-weight: 800;
  color: #0F172A;
  line-height: 1.3;
  margin-bottom: 16px;
}

.service-lead {
  font-size: 1.05rem;
  color: #475569;
  line-height: 1.75;
  margin-bottom: 24px;
}

.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-bottom: 28px;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.feat-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  color: #0066FF;
  font-size: 1.1rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.feat-icon.edtech-icon {
  color: #7928CA;
}

.feat-icon.tech-icon {
  color: #0284C7;
}

.feature-list strong {
  display: block;
  font-size: 1rem;
  color: #1E293B;
  margin-bottom: 4px;
}

.feature-list p {
  font-size: 0.88rem;
  color: #64748B;
  line-height: 1.6;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
}

.service-tags span {
  font-size: 0.78rem;
  background: #E2E8F0;
  color: #334155;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-weight: 500;
}

/* 视觉容器：留学板块 */
.visual-card-glass {
  background: #0D1C33;
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: 0 25px 50px -12px rgba(11, 25, 44, 0.4);
  color: #FFFFFF;
}

.card-glass-top {
  display: flex;
  justify-content: space-between;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 10px;
}

.glass-pill {
  font-size: 0.78rem;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.1);
  color: #93C5FD;
}

.glass-pill.success {
  background: rgba(16, 185, 129, 0.2);
  color: #34D399;
}

.uni-logos-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 25px;
}

.uni-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 14px 10px;
  text-align: center;
  transition: var(--transition);
}

.uni-card:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #0066FF;
}

.uni-code {
  display: block;
  font-size: 1.1rem;
  font-weight: 800;
  color: #60A5FA;
}

.uni-name {
  display: block;
  font-size: 0.78rem;
  color: #E2E8F0;
  margin: 4px 0 2px;
}

.uni-status {
  font-size: 0.65rem;
  color: #94A3B8;
}

.flow-steps {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(0, 0, 0, 0.25);
  border-radius: var(--radius-md);
  padding: 14px 18px;
}

.step-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  font-size: 0.75rem;
  color: #CBD5E1;
}

.step-num {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #0066FF;
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
}

.step-arrow {
  color: #475569;
  font-size: 0.75rem;
}

/* 视觉容器：国际教育科技板块平台展示 */
.platform-mockup {
  background: #141A28;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 25px 50px -12px rgba(121, 40, 202, 0.25);
  overflow: hidden;
}

.mockup-header {
  background: #0E131E;
  padding: 14px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.mockup-tabs {
  display: flex;
  gap: 12px;
}

.mockup-tabs .tab {
  font-size: 0.78rem;
  color: #94A3B8;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
}

.mockup-tabs .tab.active {
  background: rgba(121, 40, 202, 0.25);
  color: #C084FC;
  font-weight: 600;
}

.system-tag {
  font-size: 0.7rem;
  color: #10B981;
  background: rgba(16, 185, 129, 0.1);
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.mockup-content {
  padding: 24px;
  color: #FFFFFF;
}

.course-selector-bar {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.tag-badge {
  font-size: 0.78rem;
  background: rgba(255, 255, 255, 0.08);
  padding: 6px 12px;
  border-radius: var(--radius-md);
  color: #E2E8F0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.tag-badge.highlight {
  background: rgba(121, 40, 202, 0.3);
  border: 1px solid rgba(121, 40, 202, 0.5);
  color: #E9D5FF;
}

.chart-preview-box {
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  padding: 18px;
  margin-bottom: 20px;
}

.chart-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.text-green { color: #34D399; }
.text-blue { color: #38BDF8; }
.text-purple { color: #A855F7; }

.progress-bars {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.bar-group .bar-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  color: #CBD5E1;
  margin-bottom: 4px;
}

.bar-track {
  width: 100%;
  height: 8px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #7928CA, #00D2FF);
  border-radius: var(--radius-full);
}

.quick-feature-grid {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.feature-chip {
  background: rgba(255, 255, 255, 0.04);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  color: #94A3B8;
  display: flex;
  align-items: center;
  gap: 10px;
}

.feature-chip i {
  color: #A855F7;
}

/* 视觉容器：网络工程拓扑图 */
.network-topology-card {
  background: #0B192C;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  padding: 26px;
  box-shadow: 0 25px 50px -12px rgba(2, 132, 199, 0.25);
  color: #FFFFFF;
}

.net-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  font-size: 0.8rem;
}

.net-status-badge {
  color: #38BDF8;
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
}

.net-status-badge i {
  font-size: 0.5rem;
  color: #10B981;
}

.latency-tag {
  background: rgba(2, 132, 199, 0.15);
  color: #7DD3FC;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-family: monospace;
}

.topology-diagram {
  text-align: center;
  margin-bottom: 24px;
}

.top-node.cloud {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, #0284C7, #0369A1);
  padding: 10px 24px;
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 600;
  box-shadow: 0 8px 20px rgba(2, 132, 199, 0.35);
}

.topo-line {
  width: 2px;
  height: 24px;
  background: rgba(255, 255, 255, 0.2);
  margin: 0 auto;
}

.middle-nodes {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 16px;
}

.sub-node {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-size: 0.8rem;
  color: #CBD5E1;
  display: flex;
  align-items: center;
  gap: 8px;
}

.topo-branches {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.branch-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 14px 10px;
  text-align: center;
}

.branch-card i {
  font-size: 1.3rem;
  color: #38BDF8;
  margin-bottom: 8px;
}

.branch-card h5 {
  font-size: 0.82rem;
  font-weight: 700;
  margin-bottom: 4px;
  color: #F1F5F9;
}

.branch-card p {
  font-size: 0.68rem;
  color: #94A3B8;
  line-height: 1.4;
}

.net-specs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 18px;
  text-align: center;
}

.spec-col .spec-label {
  display: block;
  font-size: 0.72rem;
  color: #94A3B8;
  margin-bottom: 2px;
}

.spec-col .spec-val {
  font-size: 0.82rem;
  color: #E2E8F0;
  font-weight: 600;
}

/* ===================================================================
   核心优势
=================================================================== */
.advantages-section {
  background: #FFFFFF;
}

.adv-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.adv-box {
  background: #F8FAFC;
  border: 1px solid #E2E8F0;
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  position: relative;
  transition: var(--transition);
  overflow: hidden;
}

.adv-box:hover {
  transform: translateY(-6px);
  border-color: #93C5FD;
  box-shadow: var(--shadow-xl);
}

.adv-num {
  position: absolute;
  top: 16px;
  right: 20px;
  font-size: 2.2rem;
  font-weight: 900;
  color: rgba(148, 163, 184, 0.18);
  font-family: monospace;
}

.adv-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-md);
  background: #EFF6FF;
  color: #0066FF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 20px;
}

.adv-box h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: #0F172A;
  margin-bottom: 10px;
}

.adv-box p {
  font-size: 0.88rem;
  color: #64748B;
  line-height: 1.65;
}

/* ===================================================================
   案例展示
=================================================================== */
.cases-section {
  background: #F1F5F9;
}

.cases-tabs {
  display: flex;
  gap: 12px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.case-tab-btn {
  background: #FFFFFF;
  border: 1px solid #CBD5E1;
  padding: 8px 20px;
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 600;
  color: #475569;
  cursor: pointer;
  transition: var(--transition);
}

.case-tab-btn:hover {
  border-color: #0066FF;
  color: #0066FF;
}

.case-tab-btn.active {
  background: #0066FF;
  border-color: #0066FF;
  color: #FFFFFF;
  box-shadow: 0 4px 12px rgba(0, 102, 255, 0.3);
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.case-card {
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  padding: 28px;
  border: 1px solid #E2E8F0;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
}

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

.case-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  width: fit-content;
}

.case-badge.study {
  background: #EFF6FF;
  color: #1D4ED8;
}

.case-badge.edtech {
  background: #FAF5FF;
  color: #7E22CE;
}

.case-badge.network {
  background: #F0F9FF;
  color: #0369A1;
}

.case-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #0F172A;
  line-height: 1.45;
  margin-bottom: 12px;
}

.case-desc {
  font-size: 0.88rem;
  color: #64748B;
  line-height: 1.65;
  margin-bottom: 20px;
}

.case-meta {
  border-top: 1px dashed #E2E8F0;
  padding-top: 14px;
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  color: #64748B;
  font-weight: 500;
}

/* ===================================================================
   联系与表单区
=================================================================== */
.contact-section {
  background: linear-gradient(135deg, #091322 0%, #0F233F 100%);
  color: #FFFFFF;
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 60px;
  align-items: center;
}

.contact-title {
  font-size: 2.3rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 16px;
}

.contact-desc {
  font-size: 1rem;
  color: #CBD5E1;
  line-height: 1.7;
  margin-bottom: 36px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.c-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.c-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #38BDF8;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.c-text h6 {
  font-size: 0.95rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 4px;
}

.c-text p {
  font-size: 0.85rem;
  color: #94A3B8;
  line-height: 1.5;
}

.contact-form-box {
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  padding: 40px;
  color: var(--text-main);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.35);
  position: relative;
}

.form-title {
  font-size: 1.45rem;
  font-weight: 800;
  color: #0F172A;
  margin-bottom: 6px;
}

.form-sub {
  font-size: 0.88rem;
  color: #64748B;
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 0.86rem;
  font-weight: 600;
  color: #334155;
  margin-bottom: 8px;
}

.form-group label .required {
  color: #EF4444;
}

.biz-options {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.biz-radio {
  cursor: pointer;
}

.biz-radio input {
  display: none;
}

.biz-radio span {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 10px 8px;
  background: #F8FAFC;
  border: 1px solid #CBD5E1;
  border-radius: var(--radius-md);
  font-size: 0.78rem;
  font-weight: 600;
  color: #475569;
  text-align: center;
  transition: var(--transition);
}

.biz-radio input:checked + span {
  background: #EFF6FF;
  border-color: #0066FF;
  color: #0066FF;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid #CBD5E1;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.9rem;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #0066FF;
  box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.15);
}

.btn-submit {
  width: 100%;
  background: linear-gradient(135deg, #0066FF 0%, #0052CC 100%);
  color: #FFFFFF;
  padding: 14px;
  font-size: 1rem;
  border-radius: var(--radius-md);
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 6px 18px rgba(0, 102, 255, 0.35);
  margin-top: 8px;
}

.btn-submit:hover {
  background: linear-gradient(135deg, #1A75FF 0%, #0060E6 100%);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.5);
}

.form-success-msg {
  display: none;
  text-align: center;
  padding: 40px 20px;
}

.form-success-msg .success-icon {
  font-size: 3.5rem;
  color: #10B981;
  margin-bottom: 16px;
}

.form-success-msg h4 {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 10px;
  color: #0F172A;
}

.form-success-msg p {
  color: #64748B;
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ===================================================================
   页脚
=================================================================== */
.footer {
  background: #060B12;
  color: #94A3B8;
  padding: 70px 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-container {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 50px;
  margin-bottom: 60px;
}

.footer-logo {
  height: 44px;
  width: auto;
  margin-bottom: 18px;
}

.brand-slogan {
  font-size: 0.88rem;
  line-height: 1.7;
  color: #94A3B8;
  margin-bottom: 22px;
  max-width: 320px;
}

.social-links {
  display: flex;
  gap: 12px;
}

.social-links a {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  color: #CBD5E1;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-size: 1.1rem;
  transition: var(--transition);
}

.social-links a:hover {
  background: #0066FF;
  color: #FFFFFF;
  transform: translateY(-3px);
}

.col-title {
  color: #FFFFFF;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 20px;
}

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

.col-links li a {
  color: #94A3B8;
  text-decoration: none;
  font-size: 0.88rem;
  transition: var(--transition);
}

.col-links li a:hover {
  color: #38BDF8;
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 24px 0;
  font-size: 0.78rem;
  color: #64748B;
}

.bottom-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

/* ===================================================================
   浮动在线咨询小挂件
=================================================================== */
.float-widget {
  position: fixed;
  right: 26px;
  bottom: 26px;
  z-index: 999;
}

.widget-trigger {
  background: linear-gradient(135deg, #0066FF, #00D2FF);
  color: #FFFFFF;
  border: none;
  border-radius: var(--radius-full);
  padding: 12px 20px;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 10px 25px rgba(0, 102, 255, 0.4);
  transition: var(--transition);
}

.widget-trigger:hover {
  transform: scale(1.05);
}

.widget-popup {
  position: absolute;
  bottom: 60px;
  right: 0;
  width: 320px;
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
  border: 1px solid #E2E8F0;
  overflow: hidden;
  display: none;
  animation: fadeInPop 0.3s ease forwards;
}

.widget-popup.show {
  display: block;
}

@keyframes fadeInPop {
  from { opacity: 0; transform: translateY(15px); }
  to { opacity: 1; transform: translateY(0); }
}

.widget-header {
  background: #0B192C;
  color: #FFFFFF;
  padding: 12px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.88rem;
  font-weight: 700;
}

.widget-header button {
  background: none;
  border: none;
  color: #94A3B8;
  cursor: pointer;
  font-size: 1.1rem;
}

.widget-body {
  padding: 16px;
  font-size: 0.85rem;
  color: #334155;
}

.quick-chips {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.quick-chips button {
  background: #F1F5F9;
  border: 1px solid #CBD5E1;
  padding: 8px 12px;
  border-radius: var(--radius-md);
  text-align: left;
  font-size: 0.8rem;
  color: #1E293B;
  cursor: pointer;
  transition: var(--transition);
}

.quick-chips button:hover {
  background: #EFF6FF;
  border-color: #0066FF;
  color: #0066FF;
}

/* ===================================================================
   响应式适配 (MOBILE RESPONSIVE)
=================================================================== */
@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
  }
  .about-grid, .cases-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .adv-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-container {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .announcement-right {
    display: none;
  }
  .mobile-toggle {
    display: block;
  }
  .nav-menu {
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    background: #0B192C;
    padding: 20px;
    display: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }
  .nav-menu.mobile-open {
    display: block;
  }
  .nav-links {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  .nav-btn-sub {
    display: none;
  }
  .hero-title {
    font-size: 2.2rem;
  }
  .hero-quick-cards {
    grid-template-columns: 1fr;
  }
  .service-flex, .service-flex.reverse {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .service-flex.reverse .service-text {
    order: 1;
  }
  .service-flex.reverse .service-visual {
    order: 2;
  }
  .contact-wrapper {
    grid-template-columns: 1fr;
  }
  .about-grid, .cases-grid, .adv-grid {
    grid-template-columns: 1fr;
  }
  .footer-container {
    grid-template-columns: 1fr;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .biz-options {
    grid-template-columns: 1fr;
  }
}

/* 底部与真实备案信息样式 */
.company-contact-mini {
  margin-top: 14px;
  font-size: 0.84rem;
  line-height: 1.8;
  color: #94A3B8;
}
.company-contact-mini p i {
  color: #38BDF8;
  width: 18px;
  margin-right: 4px;
}
.company-contact-mini strong {
  color: #E2E8F0;
}
.bottom-copyright {
  color: #94A3B8;
  font-size: 0.82rem;
}
.bottom-regulation {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.beian-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #94A3B8;
  text-decoration: none;
  font-size: 0.82rem;
  transition: var(--transition);
}
.beian-link:hover {
  color: #38BDF8;
}
.gongan-icon {
  width: 18px;
  height: 18px;
  vertical-align: middle;
}
.beian-divider {
  color: #475569;
  font-size: 0.8rem;
}
.quick-phone-bar {
  margin-top: 14px;
  padding-top: 10px;
  border-top: 1px dashed #E2E8F0;
}
.quick-phone-bar a {
  display: block;
  text-align: center;
  background: #EFF6FF;
  color: #0066FF;
  padding: 8px 12px;
  border-radius: var(--radius-md);
  font-weight: 700;
  text-decoration: none;
  font-size: 0.84rem;
  transition: var(--transition);
}
.quick-phone-bar a:hover {
  background: #0066FF;
  color: #FFFFFF;
}


/* 底部员工登录按钮入口样式 */
.staff-login-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--text-white-dim);
  text-decoration: none;
  font-size: 0.8rem;
  padding: 3px 8px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all 0.25s ease;
}

.staff-login-btn:hover {
  color: #38bdf8;
  background: rgba(56, 189, 248, 0.12);
  border-color: rgba(56, 189, 248, 0.35);
  text-decoration: none;
}


/* 锐联数智 双CTA按钮组样式 */
.service-cta-dual {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
}

.btn-network-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  color: #0284c7;
  background: rgba(2, 132, 199, 0.08);
  border: 1.5px solid rgba(2, 132, 199, 0.4);
  text-decoration: none;
  transition: all 0.25s ease;
}

.btn-network-outline:hover {
  background: rgba(2, 132, 199, 0.16);
  border-color: #0284c7;
  color: #0369a1;
  transform: translateY(-2px);
}