/* ============================================
   CloudNova - 企业云服务网站设计系统
   主题：深灰色 + 科技蓝
   框架：Bootstrap 5
   ============================================ */

/* ----- Design Tokens ----- */
:root {
  /* 主色调 */
  --cn-dark-1: #0d0d12;
  --cn-dark-2: #141419;
  --cn-dark-3: #1a1a22;
  --cn-dark-4: #22222d;
  --cn-dark-5: #2a2a36;
  --cn-dark-6: #33333f;
  --cn-dark-7: #3d3d4a;

  /* 强调色 */
  --cn-accent: #3b82f6;
  --cn-accent-light: #60a5fa;
  --cn-accent-dark: #2563eb;
  --cn-accent-glow: rgba(59, 130, 246, 0.25);
  --cn-accent-subtle: rgba(59, 130, 246, 0.08);

  /* 辅助色 */
  --cn-green: #10b981;
  --cn-purple: #8b5cf6;
  --cn-orange: #f59e0b;
  --cn-red: #ef4444;
  --cn-cyan: #06b6d4;

  /* 文字 */
  --cn-text-primary: #f0f0f5;
  --cn-text-secondary: #9ca3af;
  --cn-text-muted: #6b7280;

  /* 边框 */
  --cn-border: rgba(255, 255, 255, 0.06);
  --cn-border-hover: rgba(255, 255, 255, 0.12);

  /* 渐变 */
  --cn-gradient-hero: linear-gradient(135deg, #0d0d12 0%, #141428 50%, #0d1a2e 100%);
  --cn-gradient-card: linear-gradient(180deg, var(--cn-dark-4) 0%, var(--cn-dark-3) 100%);
  --cn-gradient-accent: linear-gradient(135deg, var(--cn-accent) 0%, var(--cn-accent-light) 100%);
  --cn-gradient-section: linear-gradient(180deg, var(--cn-dark-2) 0%, var(--cn-dark-1) 100%);

  /* 阴影 */
  --cn-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --cn-shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --cn-shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
  --cn-shadow-glow: 0 0 30px var(--cn-accent-glow);
  --cn-shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3);

  /* 动画 */
  --cn-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --cn-transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);

  /* 圆角 */
  --cn-radius-sm: 6px;
  --cn-radius-md: 10px;
  --cn-radius-lg: 16px;
  --cn-radius-xl: 24px;
}

/* ----- Reset & Base ----- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial,
    sans-serif;
  background-color: var(--cn-dark-1);
  color: var(--cn-text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: var(--cn-accent-light);
  transition: var(--cn-transition);
}

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

::selection {
  background-color: var(--cn-accent);
  color: white;
}

/* ----- Typography ----- */
.section-title {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--cn-text-primary);
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--cn-text-secondary);
  max-width: 600px;
  margin: 0 auto 3rem;
}

.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--cn-accent-light);
  background: var(--cn-accent-subtle);
  padding: 0.35rem 1rem;
  border-radius: 50px;
  margin-bottom: 1.25rem;
  border: 1px solid rgba(59, 130, 246, 0.15);
}

/* ----- Navbar ----- */
.cn-navbar {
  background: rgba(13, 13, 18, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--cn-border);
  padding: 0.75rem 0;
  transition: var(--cn-transition);
  z-index: 1050;
}

.cn-navbar.scrolled {
  background: rgba(13, 13, 18, 0.95);
  box-shadow: var(--cn-shadow-sm);
}

.cn-navbar .navbar-brand {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--cn-text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.cn-navbar .navbar-brand .brand-icon {
  width: 36px;
  height: 36px;
  background: var(--cn-gradient-accent);
  border-radius: var(--cn-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1rem;
}

.cn-navbar .nav-link {
  color: var(--cn-text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.5rem 1rem !important;
  border-radius: var(--cn-radius-sm);
  transition: var(--cn-transition);
}

.cn-navbar .nav-link:hover,
.cn-navbar .nav-link.active {
  color: var(--cn-text-primary);
  background: var(--cn-accent-subtle);
}

.cn-navbar .btn-nav-cta {
  background: var(--cn-gradient-accent);
  color: white;
  border: none;
  padding: 0.5rem 1.25rem;
  border-radius: var(--cn-radius-sm);
  font-weight: 600;
  font-size: 0.85rem;
  transition: var(--cn-transition);
}

.cn-navbar .btn-nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: var(--cn-shadow-glow);
  color: white;
}

/* Mobile toggler */
.cn-navbar .navbar-toggler {
  border: 1px solid var(--cn-border);
  padding: 0.4rem 0.6rem;
}

.cn-navbar .navbar-toggler-icon {
  filter: invert(1);
}

/* ----- Hero Section ----- */
.cn-hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--cn-gradient-hero);
  overflow: hidden;
  padding-top: 80px;
}

.cn-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse 800px 600px at 70% 30%, rgba(59, 130, 246, 0.08) 0%, transparent 70%),
    radial-gradient(ellipse 600px 400px at 30% 60%, rgba(139, 92, 246, 0.05) 0%, transparent 70%);
  pointer-events: none;
}

/* 动态网格背景 */
.cn-hero::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    linear-gradient(rgba(59, 130, 246, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--cn-accent-subtle);
  border: 1px solid rgba(59, 130, 246, 0.2);
  padding: 0.4rem 1rem;
  border-radius: 50px;
  font-size: 0.85rem;
  color: var(--cn-accent-light);
  margin-bottom: 1.5rem;
  animation: fadeInUp 0.6s ease-out;
}

.hero-badge i {
  font-size: 0.7rem;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  animation: fadeInUp 0.6s ease-out 0.1s both;
}

.hero-title .text-gradient {
  background: var(--cn-gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 1.15rem;
  color: var(--cn-text-secondary);
  max-width: 540px;
  margin-bottom: 2.5rem;
  line-height: 1.7;
  animation: fadeInUp 0.6s ease-out 0.2s both;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  animation: fadeInUp 0.6s ease-out 0.3s both;
}

.btn-hero-primary {
  background: var(--cn-gradient-accent);
  color: white;
  border: none;
  padding: 0.85rem 2rem;
  border-radius: var(--cn-radius-md);
  font-weight: 600;
  font-size: 1rem;
  transition: var(--cn-transition);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-hero-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--cn-shadow-glow);
  color: white;
}

.btn-hero-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--cn-text-primary);
  border: 1px solid var(--cn-border-hover);
  padding: 0.85rem 2rem;
  border-radius: var(--cn-radius-md);
  font-weight: 600;
  font-size: 1rem;
  transition: var(--cn-transition);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-hero-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  color: var(--cn-text-primary);
}

/* Hero右侧动画图形 */
.hero-visual {
  position: relative;
  z-index: 2;
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-graphic {
  position: relative;
  width: 100%;
  max-width: 520px;
  margin: 0 auto;
}

.hero-graphic-inner {
  width: 100%;
  aspect-ratio: 1;
  position: relative;
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  animation: float 6s ease-in-out infinite;
}

.hero-orb-1 {
  width: 300px;
  height: 300px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, transparent 70%);
  animation-delay: 0s;
}

.hero-orb-2 {
  width: 200px;
  height: 200px;
  top: 20%;
  right: 10%;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.12) 0%, transparent 70%);
  animation-delay: -2s;
}

.hero-orb-3 {
  width: 150px;
  height: 150px;
  bottom: 20%;
  left: 15%;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.1) 0%, transparent 70%);
  animation-delay: -4s;
}

/* Hero中间Server图标 */
.hero-server-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 120px;
  height: 120px;
  background: var(--cn-gradient-card);
  border: 1px solid var(--cn-border-hover);
  border-radius: var(--cn-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--cn-shadow-lg), var(--cn-shadow-glow);
}

.hero-server-icon i {
  font-size: 3rem;
  background: var(--cn-gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 浮动小卡片 */
.hero-float-card {
  position: absolute;
  background: var(--cn-gradient-card);
  border: 1px solid var(--cn-border);
  border-radius: var(--cn-radius-md);
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  box-shadow: var(--cn-shadow-md);
  animation: floatCard 4s ease-in-out infinite;
  white-space: nowrap;
}

.hero-float-card .icon-wrap {
  width: 36px;
  height: 36px;
  border-radius: var(--cn-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
}

.hero-float-card .card-text {
  font-size: 0.8rem;
}

.hero-float-card .card-text .label {
  color: var(--cn-text-muted);
  display: block;
  font-size: 0.7rem;
}

.hero-float-card .card-text .value {
  color: var(--cn-text-primary);
  font-weight: 600;
}

.float-card-1 {
  top: 15%;
  right: 0;
  animation-delay: -1s;
}

.float-card-2 {
  bottom: 25%;
  left: 0;
  animation-delay: -3s;
}

.float-card-3 {
  bottom: 10%;
  right: 15%;
  animation-delay: -5s;
}

/* Hero 统计数据 */
.hero-stats {
  display: flex;
  gap: 2.5rem;
  margin-top: 3rem;
  animation: fadeInUp 0.6s ease-out 0.5s both;
}

.hero-stat .stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--cn-text-primary);
}

.hero-stat .stat-value span {
  color: var(--cn-accent-light);
}

.hero-stat .stat-label {
  font-size: 0.85rem;
  color: var(--cn-text-muted);
}

/* ----- Section Common ----- */
.cn-section {
  padding: 6rem 0;
  position: relative;
}

.cn-section-alt {
  background: var(--cn-dark-2);
}

.cn-section-dark {
  background: var(--cn-gradient-section);
}

/* ----- Service Cards ----- */
.service-card {
  background: var(--cn-gradient-card);
  border: 1px solid var(--cn-border);
  border-radius: var(--cn-radius-lg);
  padding: 2rem;
  transition: var(--cn-transition);
  height: 100%;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 93%;
  height: 3px;
  background: var(--cn-gradient-accent);
  border-radius: 0 0 var(--cn-radius-sm) var(--cn-radius-sm);
  opacity: 0;
  transition: var(--cn-transition);
}

.service-card:hover {
  transform: translateY(-4px);
  border-color: var(--cn-border-hover);
  box-shadow: var(--cn-shadow-card);
}

.service-card:hover::before {
  opacity: 1;
}

.service-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--cn-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 1.25rem;
}

.service-icon.blue {
  background: rgba(59, 130, 246, 0.1);
  color: var(--cn-accent-light);
  border: 1px solid rgba(59, 130, 246, 0.15);
}

.service-icon.purple {
  background: rgba(139, 92, 246, 0.1);
  color: var(--cn-purple);
  border: 1px solid rgba(139, 92, 246, 0.15);
}

.service-icon.cyan {
  background: rgba(6, 182, 212, 0.1);
  color: var(--cn-cyan);
  border: 1px solid rgba(6, 182, 212, 0.15);
}

.service-card h4 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--cn-text-primary);
}

.service-card p {
  color: var(--cn-text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

.service-card .service-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--cn-accent-light);
  transition: var(--cn-transition);
}

.service-card .service-link:hover {
  gap: 0.7rem;
}

/* ----- Cloud Advantages Section ----- */
.cloud-adv-item {
  display: flex;
  gap: 1.25rem;
  padding: 1.25rem;
  border-radius: var(--cn-radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--cn-transition);
  margin-bottom: 0.5rem;
}

.cloud-adv-item:hover,
.cloud-adv-item.active {
  background: var(--cn-dark-4);
  border-color: var(--cn-border);
}

.cloud-adv-item.active {
  border-left: 3px solid var(--cn-accent);
}

.cloud-adv-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: var(--cn-radius-sm);
  background: var(--cn-accent-subtle);
  color: var(--cn-accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  transition: var(--cn-transition);
  border: 1px solid rgba(59, 130, 246, 0.15);
}

.cloud-adv-item.active .cloud-adv-icon,
.cloud-adv-item:hover .cloud-adv-icon {
  background: var(--cn-gradient-accent);
  color: white;
  border-color: transparent;
}

.cloud-adv-text h5 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--cn-text-primary);
  margin-bottom: 0.35rem;
}

.cloud-adv-text p {
  font-size: 0.88rem;
  color: var(--cn-text-muted);
  line-height: 1.65;
  margin: 0;
  transition: var(--cn-transition);
}

.cloud-adv-item.active .cloud-adv-text p,
.cloud-adv-item:hover .cloud-adv-text p {
  color: var(--cn-text-secondary);
}

/* 右侧仪表盘面板 */
.cloud-adv-panel {
  background: var(--cn-dark-2);
  border: 1px solid var(--cn-border);
  border-radius: var(--cn-radius-lg);
  overflow: hidden;
  box-shadow: var(--cn-shadow-lg);
}

.panel-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem;
  background: var(--cn-dark-3);
  border-bottom: 1px solid var(--cn-border);
}

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

.panel-dots .dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dot-red { background: #ef4444; }
.dot-yellow { background: #f59e0b; }
.dot-green { background: #10b981; }

.panel-title {
  font-size: 0.8rem;
  color: var(--cn-text-muted);
  font-weight: 500;
}

.panel-body {
  padding: 1.5rem;
}

.panel-status-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--cn-border);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.3rem 0.75rem;
  border-radius: 50px;
}

.status-online {
  background: rgba(16, 185, 129, 0.1);
  color: var(--cn-green);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.status-online i {
  font-size: 0.5rem;
}

.status-info {
  font-size: 0.8rem;
  color: var(--cn-text-muted);
}

.panel-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.panel-metric {
  background: var(--cn-dark-3);
  border-radius: var(--cn-radius-sm);
  padding: 1rem;
  border: 1px solid var(--cn-border);
}

.metric-label {
  font-size: 0.75rem;
  color: var(--cn-text-muted);
  margin-bottom: 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.metric-value {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--cn-text-primary);
  margin-bottom: 0.6rem;
}

.metric-bar {
  height: 4px;
  background: var(--cn-dark-5);
  border-radius: 4px;
  overflow: hidden;
}

.metric-fill {
  height: 100%;
  background: var(--cn-gradient-accent);
  border-radius: 4px;
  transition: width 1s ease-out;
}

.metric-fill.high {
  background: linear-gradient(90deg, var(--cn-accent), var(--cn-green));
}

/* 终端日志 */
.panel-terminal {
  background: var(--cn-dark-1);
  border-radius: var(--cn-radius-sm);
  padding: 1rem 1.25rem;
  font-family: "SF Mono", "Cascadia Code", "Fira Code", Consolas, monospace;
  font-size: 0.8rem;
  border: 1px solid var(--cn-border);
}

.term-line {
  padding: 0.2rem 0;
  color: var(--cn-text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.term-prompt {
  color: var(--cn-green);
  margin-right: 0.5rem;
  font-weight: 700;
}

.term-success {
  color: var(--cn-green);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.term-success .term-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cn-green);
  flex-shrink: 0;
}

.term-output {
  color: var(--cn-text-muted);
}

.term-cursor {
  color: var(--cn-accent-light);
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

@media (max-width: 991.98px) {
  .panel-grid {
    grid-template-columns: 1fr;
  }

  .panel-status-row {
    gap: 0.75rem;
  }
}

@media (max-width: 767.98px) {
  .cloud-adv-item {
    padding: 1rem;
  }
}

/* ----- Domain Section ----- */
.domain-search-box {
  background: var(--cn-dark-4);
  border: 1px solid var(--cn-border);
  border-radius: var(--cn-radius-lg);
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
}

.domain-search-box::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse at center, var(--cn-accent-subtle) 0%, transparent 60%);
  pointer-events: none;
}

.domain-input-group {
  position: relative;
  z-index: 1;
  display: flex;
  gap: 0;
  max-width: 700px;
  margin: 0 auto;
}

.domain-input-group input {
  flex: 1;
  background: var(--cn-dark-2);
  border: 1px solid var(--cn-border-hover);
  border-right: none;
  border-radius: var(--cn-radius-md) 0 0 var(--cn-radius-md);
  padding: 1rem 1.25rem;
  font-size: 1.05rem;
  color: var(--cn-text-primary);
  outline: none;
  transition: var(--cn-transition);
}

.domain-input-group input::placeholder {
  color: var(--cn-text-muted);
}

.domain-input-group input:focus {
  border-color: var(--cn-accent);
  box-shadow: inset 0 0 0 1px var(--cn-accent);
}

.domain-input-group .btn-search {
  background: var(--cn-gradient-accent);
  color: white;
  border: none;
  padding: 1rem 2rem;
  border-radius: 0 var(--cn-radius-md) var(--cn-radius-md) 0;
  font-weight: 600;
  font-size: 1rem;
  white-space: nowrap;
  transition: var(--cn-transition);
}

.domain-input-group .btn-search:hover {
  box-shadow: var(--cn-shadow-glow);
}

/* 域名后缀价格 */
.domain-ext-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.domain-ext-card {
  background: var(--cn-dark-3);
  border: 1px solid var(--cn-border);
  border-radius: var(--cn-radius-md);
  padding: 1.25rem;
  text-align: center;
  transition: var(--cn-transition);
  cursor: pointer;
}

.domain-ext-card:hover {
  border-color: var(--cn-accent);
  background: var(--cn-dark-4);
  transform: translateY(-2px);
}

.domain-ext-card .ext-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--cn-accent-light);
  margin-bottom: 0.25rem;
}

.domain-ext-card .ext-price {
  font-size: 1rem;
  font-weight: 600;
  color: var(--cn-text-primary);
}

.domain-ext-card .ext-price .unit {
  font-size: 0.8rem;
  color: var(--cn-text-muted);
  font-weight: 400;
}

.domain-ext-card .ext-original {
  font-size: 0.8rem;
  color: var(--cn-text-muted);
  text-decoration: line-through;
}

/* ----- Pricing Cards ----- */
.pricing-card {
  background: var(--cn-gradient-card);
  border: 1px solid var(--cn-border);
  border-radius: var(--cn-radius-lg);
  padding: 2rem;
  transition: var(--cn-transition);
  height: 100%;
  position: relative;
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--cn-shadow-card);
}

.pricing-card.featured {
  border-color: var(--cn-accent);
  box-shadow: var(--cn-shadow-glow);
}

.pricing-card.featured::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 93%;
  height: 3px;
  background: var(--cn-gradient-accent);
  border-radius: 0 0 var(--cn-radius-sm) var(--cn-radius-sm);
}

.pricing-badge {
  position: absolute;
  top: -1px;
  right: 24px;
  background: var(--cn-gradient-accent);
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.3rem 0.8rem;
  border-radius: 0 0 var(--cn-radius-sm) var(--cn-radius-sm);
}

.pricing-card .plan-name {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--cn-text-secondary);
  margin-bottom: 0.5rem;
}

.pricing-card .plan-price {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--cn-text-primary);
  margin-bottom: 0.25rem;
  line-height: 1;
}

.pricing-card .plan-price .currency {
  font-size: 1.25rem;
  font-weight: 600;
  vertical-align: top;
  margin-right: 2px;
}

.pricing-card .plan-price .period {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--cn-text-muted);
}

.pricing-card .plan-desc {
  font-size: 0.9rem;
  color: var(--cn-text-muted);
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--cn-border);
}

.pricing-card .plan-features {
  list-style: none;
  padding: 0;
  margin: 0 0 2rem;
}

.pricing-card .plan-features li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.4rem 0;
  font-size: 0.9rem;
  color: var(--cn-text-secondary);
}

.pricing-card .plan-features li i {
  color: var(--cn-green);
  font-size: 0.75rem;
  flex-shrink: 0;
}

.btn-pricing {
  width: 100%;
  padding: 0.75rem;
  border-radius: var(--cn-radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--cn-transition);
  text-align: center;
  display: block;
}

.btn-pricing-primary {
  background: var(--cn-gradient-accent);
  color: white;
  border: none;
}

.btn-pricing-primary:hover {
  box-shadow: var(--cn-shadow-glow);
  transform: translateY(-1px);
  color: white;
}

.btn-pricing-outline {
  background: transparent;
  color: var(--cn-text-primary);
  border: 1px solid var(--cn-border-hover);
}

.btn-pricing-outline:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--cn-accent);
  color: var(--cn-text-primary);
}

/* ----- Cloud pricing (refined) ----- */

.cloud-plan-card {
  background: linear-gradient(180deg, rgba(34, 34, 45, 0.95) 0%, rgba(26, 26, 34, 0.95) 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--cn-radius-lg);
  padding: 1.75rem;
  height: 100%;
  position: relative;
  overflow: hidden;
  transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}

.cloud-plan-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 420px 300px at 15% 10%, rgba(59, 130, 246, 0.14) 0%, transparent 65%),
    radial-gradient(ellipse 380px 280px at 85% 80%, rgba(139, 92, 246, 0.10) 0%, transparent 70%);
  opacity: 0.85;
  pointer-events: none;
}

.cloud-plan-card:hover {
  transform: translateY(-6px);
  border-color: rgba(59, 130, 246, 0.22);
  box-shadow: var(--cn-shadow-card);
}

.cloud-plan-card.is-featured {
  border-color: rgba(59, 130, 246, 0.45);
  box-shadow: var(--cn-shadow-glow);
}

.cloud-plan-badge {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 2;
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  color: #fff;
  background: var(--cn-gradient-accent);
  box-shadow: 0 10px 30px rgba(59, 130, 246, 0.18);
}

.cloud-plan-top,
.cloud-plan-price,
.cloud-plan-specs,
.cloud-plan-features,
.cloud-plan-subprice {
  position: relative;
  z-index: 1;
}

.cloud-plan-top {
  display: flex;
  gap: 0.9rem;
  align-items: center;
  margin-bottom: 1.15rem;
}

.cloud-plan-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--cn-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(59, 130, 246, 0.12);
  border: 1px solid rgba(59, 130, 246, 0.18);
  color: var(--cn-accent-light);
  flex-shrink: 0;
}

.cloud-plan-icon i {
  font-size: 1.25rem;
}

.cloud-plan-card .plan-name {
  font-size: 1.05rem;
  font-weight: 900;
  color: var(--cn-text-primary);
  margin: 0;
}

.cloud-plan-card .plan-desc {
  font-size: 0.86rem;
  color: var(--cn-text-muted);
  margin-top: 0.15rem;
}

.cloud-plan-price {
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
  margin-bottom: 0.35rem;
}

.cloud-plan-price .currency {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--cn-text-secondary);
}

.cloud-plan-price .amount {
  font-size: 2.35rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--cn-text-primary);
}

.cloud-plan-price .period {
  font-size: 0.9rem;
  color: var(--cn-text-muted);
  font-weight: 700;
}

.cloud-plan-price .yearly {
  font-size: 0.9rem;
  color: var(--cn-text-secondary);
  font-weight: 800;
  margin-left: 0.25rem;
  white-space: nowrap;
}

.cloud-plan-price .yearly .sep {
  margin: 0 0.35rem;
  color: var(--cn-text-muted);
  font-weight: 700;
}

.cloud-plan-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
  padding: 1rem 0;
  margin: 0.75rem 0 0.9rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.cloud-plan-specs .spec {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--cn-radius-md);
  padding: 0.65rem 0.75rem;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
}

.cloud-plan-specs .k {
  font-size: 0.72rem;
  color: var(--cn-text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 900;
}

.cloud-plan-specs .v {
  font-size: 0.9rem;
  color: var(--cn-text-primary);
  font-weight: 900;
}

.cloud-plan-features {
  list-style: none;
  padding: 0;
  margin: 0 0 1.2rem;
}

.cloud-plan-features li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.35rem 0;
  font-size: 0.9rem;
  color: var(--cn-text-secondary);
}

.cloud-plan-features li i {
  color: var(--cn-green);
  font-size: 0.75rem;
  flex-shrink: 0;
}

.cloud-trust-row {
  margin-top: 2.25rem;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.9rem;
  padding: 1rem;
  border-radius: var(--cn-radius-lg);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.cloud-trust-row .trust-item {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  color: var(--cn-text-secondary);
  font-size: 0.88rem;
  font-weight: 700;
}

.cloud-trust-row .trust-item i {
  color: var(--cn-accent-light);
}

@media (max-width: 991.98px) {
  .cloud-trust-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ----- Virtual hosting (refined) ----- */
.vhost-plan-card {
  background: linear-gradient(180deg, rgba(34, 34, 45, 0.95) 0%, rgba(26, 26, 34, 0.95) 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--cn-radius-lg);
  padding: 1.75rem;
  height: 100%;
  position: relative;
  overflow: hidden;
  transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}

.vhost-plan-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 420px 300px at 18% 10%, rgba(6, 182, 212, 0.14) 0%, transparent 65%),
    radial-gradient(ellipse 380px 280px at 85% 78%, rgba(59, 130, 246, 0.10) 0%, transparent 70%);
  opacity: 0.85;
  pointer-events: none;
}

.vhost-plan-card:hover {
  transform: translateY(-6px);
  border-color: rgba(6, 182, 212, 0.25);
  box-shadow: var(--cn-shadow-card);
}

.vhost-plan-card.is-featured {
  border-color: rgba(6, 182, 212, 0.45);
  box-shadow: 0 0 30px rgba(6, 182, 212, 0.18);
}

.vhost-plan-badge {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 2;
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  color: #fff;
  background: linear-gradient(135deg, rgba(6, 182, 212, 1) 0%, rgba(59, 130, 246, 1) 100%);
  box-shadow: 0 10px 30px rgba(6, 182, 212, 0.16);
}

.vhost-plan-badge.subtle {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.10);
  color: var(--cn-text-primary);
  box-shadow: none;
}

.vhost-plan-badge.dark {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--cn-text-primary);
  box-shadow: none;
}

.vhost-plan-top,
.vhost-plan-price,
.vhost-plan-specs,
.vhost-plan-features {
  position: relative;
  z-index: 1;
}

.vhost-plan-top {
  display: flex;
  gap: 0.9rem;
  align-items: center;
  margin-bottom: 1.15rem;
}

.vhost-plan-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--cn-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(6, 182, 212, 0.12);
  border: 1px solid rgba(6, 182, 212, 0.18);
  color: rgba(103, 232, 249, 0.95);
  flex-shrink: 0;
}

.vhost-plan-icon i {
  font-size: 1.25rem;
}

.vhost-plan-card .plan-name {
  font-size: 1.05rem;
  font-weight: 900;
  color: var(--cn-text-primary);
  margin: 0;
}

.vhost-plan-card .plan-desc {
  font-size: 0.86rem;
  color: var(--cn-text-muted);
  margin-top: 0.15rem;
}

.vhost-plan-price {
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
  margin-bottom: 0.9rem;
}

.vhost-plan-price .currency {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--cn-text-secondary);
}

.vhost-plan-price .amount {
  font-size: 2.25rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--cn-text-primary);
}

.vhost-plan-price .period {
  font-size: 0.9rem;
  color: var(--cn-text-muted);
  font-weight: 700;
}

.vhost-plan-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
  padding: 1rem 0;
  margin: 0.25rem 0 0.9rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.vhost-plan-specs .spec {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--cn-radius-md);
  padding: 0.65rem 0.75rem;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
}

.vhost-plan-specs .k {
  font-size: 0.75rem;
  color: var(--cn-text-muted);
  font-weight: 900;
}

.vhost-plan-specs .v {
  font-size: 0.9rem;
  color: var(--cn-text-primary);
  font-weight: 900;
  text-align: right;
}

.vhost-plan-features {
  list-style: none;
  padding: 0;
  margin: 0 0 1.2rem;
}

.vhost-plan-features li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.35rem 0;
  font-size: 0.9rem;
  color: var(--cn-text-secondary);
}

.vhost-plan-features li i {
  color: var(--cn-green);
  font-size: 0.75rem;
  flex-shrink: 0;
}

.vhost-trust-row {
  margin-top: 2.25rem;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.9rem;
  padding: 1rem;
  border-radius: var(--cn-radius-lg);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.vhost-trust-row .trust-item {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  color: var(--cn-text-secondary);
  font-size: 0.88rem;
  font-weight: 700;
}

.vhost-trust-row .trust-item i {
  color: rgba(103, 232, 249, 0.95);
}

@media (max-width: 991.98px) {
  .vhost-trust-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ----- Advantages Section ----- */
.advantage-card {
  text-align: center;
  padding: 2rem 1.5rem;
  border-radius: var(--cn-radius-lg);
  transition: var(--cn-transition);
  border: 1px solid transparent;
}

.advantage-card:hover {
  background: var(--cn-dark-4);
  border-color: var(--cn-border);
}

.advantage-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 1.25rem;
  border-radius: var(--cn-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  background: var(--cn-accent-subtle);
  color: var(--cn-accent-light);
  border: 1px solid rgba(59, 130, 246, 0.15);
  transition: var(--cn-transition);
}

.advantage-card:hover .advantage-icon {
  background: var(--cn-gradient-accent);
  color: white;
  transform: scale(1.1);
}

.advantage-card h5 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--cn-text-primary);
}

.advantage-card p {
  font-size: 0.9rem;
  color: var(--cn-text-secondary);
  line-height: 1.6;
}

/* ----- Testimonials ----- */
.testimonial-card {
  background: var(--cn-gradient-card);
  border: 1px solid var(--cn-border);
  border-radius: var(--cn-radius-lg);
  padding: 2rem;
  transition: var(--cn-transition);
  height: 100%;
}

.testimonial-card:hover {
  border-color: var(--cn-border-hover);
  box-shadow: var(--cn-shadow-card);
}

.testimonial-stars {
  color: var(--cn-orange);
  font-size: 0.85rem;
  margin-bottom: 1rem;
  display: flex;
  gap: 0.2rem;
}

.testimonial-card blockquote {
  font-size: 0.95rem;
  color: var(--cn-text-secondary);
  line-height: 1.7;
  margin-bottom: 1.5rem;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.testimonial-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--cn-gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 700;
  color: white;
  flex-shrink: 0;
}

.testimonial-author .author-name {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--cn-text-primary);
}

.testimonial-author .author-title {
  font-size: 0.8rem;
  color: var(--cn-text-muted);
}

/* ----- CTA Section ----- */
.cn-cta {
  background: var(--cn-dark-3);
  border-radius: var(--cn-radius-xl);
  padding: 4rem 3rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--cn-border);
}

.cn-cta::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse at center, var(--cn-accent-subtle) 0%, transparent 50%);
  pointer-events: none;
}

.cn-cta h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1rem;
  position: relative;
}

.cn-cta p {
  color: var(--cn-text-secondary);
  max-width: 500px;
  margin: 0 auto 2rem;
  position: relative;
}

/* ----- Footer ----- */
.cn-footer {
  background: var(--cn-dark-1);
  border-top: 1px solid var(--cn-border);
  padding: 4rem 0 0;
}

.cn-footer h6 {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--cn-text-primary);
  margin-bottom: 1.25rem;
}

.cn-footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.cn-footer ul li {
  margin-bottom: 0.6rem;
}

.cn-footer ul li a {
  color: var(--cn-text-muted);
  font-size: 0.9rem;
  transition: var(--cn-transition);
}

.cn-footer ul li a:hover {
  color: var(--cn-text-primary);
  padding-left: 4px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--cn-text-primary);
  margin-bottom: 1rem;
}

.footer-brand .brand-icon {
  width: 32px;
  height: 32px;
  background: var(--cn-gradient-accent);
  border-radius: var(--cn-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 0.85rem;
}

.footer-desc {
  font-size: 0.9rem;
  color: var(--cn-text-muted);
  line-height: 1.7;
  margin-bottom: 1.25rem;
  max-width: 320px;
}

.footer-social {
  display: flex;
  gap: 0.75rem;
}

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: var(--cn-radius-sm);
  background: var(--cn-dark-4);
  border: 1px solid var(--cn-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cn-text-secondary);
  transition: var(--cn-transition);
  font-size: 0.9rem;
}

.footer-social a:hover {
  background: var(--cn-accent);
  border-color: var(--cn-accent);
  color: white;
}

.footer-bottom {
  border-top: 1px solid var(--cn-border);
  padding: 1.5rem 0;
  margin-top: 3rem;
  text-align: center;
  font-size: 0.85rem;
  color: var(--cn-text-muted);
}

.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.6rem;
  font-size: 0.9rem;
  color: var(--cn-text-muted);
}

.footer-contact-item i {
  color: var(--cn-accent-light);
  width: 16px;
  text-align: center;
}

/* ----- Nav Login Button ----- */
.btn-nav-login {
  color: var(--cn-text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: var(--cn-radius-sm);
  transition: var(--cn-transition);
  margin-left: 0.5rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
}

.btn-nav-login:hover {
  color: var(--cn-text-primary);
  background: var(--cn-accent-subtle);
}

/* 移动端导航栏登录图标按钮 */
.btn-nav-login-mobile {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--cn-radius-sm);
  color: var(--cn-text-secondary);
  font-size: 1.2rem;
  cursor: pointer;
  transition: var(--cn-transition);
  order: 2;
  margin-left: 0.5rem;
}

.btn-nav-login-mobile:hover {
  color: var(--cn-text-primary);
  background: var(--cn-accent-subtle);
}

/* ----- Auth Modal ----- */
.auth-overlay {
  position: fixed;
  inset: 0;
  z-index: 9000;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  padding: 1rem;
}

.auth-overlay.open {
  opacity: 1;
  visibility: visible;
}

.auth-modal {
  position: relative;
  width: 100%;
  max-width: 420px;
  background: var(--cn-dark-3);
  border: 1px solid var(--cn-border-hover);
  border-radius: var(--cn-radius-lg);
  padding: 2.5rem 2rem 2rem;
  box-shadow: var(--cn-shadow-lg);
  transform: translateY(20px) scale(0.97);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  max-height: 90vh;
  overflow-y: auto;
}

.auth-overlay.open .auth-modal {
  transform: translateY(0) scale(1);
}

/* 滚动条美化 */
.auth-modal::-webkit-scrollbar {
  width: 4px;
}

.auth-modal::-webkit-scrollbar-track {
  background: transparent;
}

.auth-modal::-webkit-scrollbar-thumb {
  background: var(--cn-dark-6);
  border-radius: 4px;
}

.auth-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 32px;
  height: 32px;
  border-radius: var(--cn-radius-sm);
  border: none;
  background: var(--cn-dark-5);
  color: var(--cn-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--cn-transition);
  font-size: 0.85rem;
}

.auth-close:hover {
  background: var(--cn-dark-6);
  color: var(--cn-text-primary);
}

/* Auth Header */
.auth-header {
  text-align: center;
  margin-bottom: 1.75rem;
}

.auth-header .auth-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--cn-text-primary);
  margin-bottom: 1rem;
}

.auth-header .auth-brand .brand-icon {
  width: 28px;
  height: 28px;
  background: var(--cn-gradient-accent);
  border-radius: var(--cn-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 0.75rem;
}

.auth-header h3 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--cn-text-primary);
  margin-bottom: 0.3rem;
}

.auth-header p {
  font-size: 0.9rem;
  color: var(--cn-text-muted);
  margin: 0;
}

/* Auth Tabs */
.auth-tabs {
  display: flex;
  gap: 0;
  background: var(--cn-dark-4);
  border-radius: var(--cn-radius-sm);
  padding: 3px;
  margin-bottom: 1.5rem;
}

.auth-tab {
  flex: 1;
  padding: 0.55rem 0;
  border: none;
  border-radius: calc(var(--cn-radius-sm) - 2px);
  background: transparent;
  color: var(--cn-text-muted);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--cn-transition);
}

.auth-tab.active {
  background: var(--cn-dark-6);
  color: var(--cn-text-primary);
  box-shadow: var(--cn-shadow-sm);
}

.auth-tab:hover:not(.active) {
  color: var(--cn-text-secondary);
}

/* Auth Form */
.auth-form {
  margin-bottom: 1.25rem;
}

.auth-field {
  margin-bottom: 1rem;
}

.auth-field label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--cn-text-secondary);
  margin-bottom: 0.4rem;
}

.auth-input-wrap {
  display: flex;
  align-items: center;
  background: var(--cn-dark-2);
  border: 1px solid var(--cn-border);
  border-radius: var(--cn-radius-sm);
  padding: 0 0.85rem;
  transition: var(--cn-transition);
}

.auth-input-wrap:focus-within {
  border-color: var(--cn-accent);
  box-shadow: 0 0 0 2px var(--cn-accent-glow);
}

.auth-input-wrap > i {
  color: var(--cn-text-muted);
  font-size: 0.95rem;
  flex-shrink: 0;
  margin-right: 0.6rem;
}

.auth-input-wrap input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--cn-text-primary);
  font-size: 0.92rem;
  padding: 0.7rem 0;
  min-width: 0;
}

.auth-input-wrap input::placeholder {
  color: var(--cn-text-muted);
}

.auth-eye {
  background: none;
  border: none;
  color: var(--cn-text-muted);
  cursor: pointer;
  padding: 0.3rem;
  margin-left: 0.25rem;
  font-size: 0.95rem;
  transition: var(--cn-transition);
  flex-shrink: 0;
}

.auth-eye:hover {
  color: var(--cn-text-secondary);
}

/* 发送验证码按钮 */
.auth-send-code {
  flex-shrink: 0;
  background: none;
  border: none;
  border-left: 1px solid var(--cn-border);
  color: var(--cn-accent-light);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.3rem 0.75rem;
  margin-left: 0.5rem;
  cursor: pointer;
  white-space: nowrap;
  transition: var(--cn-transition);
}

.auth-send-code:hover:not(:disabled) {
  color: var(--cn-accent);
}

.auth-send-code:disabled {
  color: var(--cn-text-muted);
  cursor: not-allowed;
}

/* Auth Options Row */
.auth-options {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  font-size: 0.82rem;
}

.auth-checkbox {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--cn-text-muted);
  cursor: pointer;
  font-size: 0.82rem;
}

.auth-checkbox input[type="checkbox"] {
  accent-color: var(--cn-accent);
  width: 14px;
  height: 14px;
  cursor: pointer;
}

.auth-checkbox a {
  color: var(--cn-accent-light);
}

.auth-options > a {
  color: var(--cn-accent-light);
  font-size: 0.82rem;
}

/* Primary Submit */
.auth-btn-primary {
  width: 100%;
  padding: 0.75rem;
  background: var(--cn-gradient-accent);
  color: white;
  border: none;
  border-radius: var(--cn-radius-sm);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--cn-transition);
  letter-spacing: 0.1em;
}

.auth-btn-primary:hover {
  box-shadow: var(--cn-shadow-glow);
  transform: translateY(-1px);
}

/* Divider */
.auth-divider {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 1.25rem 0;
}

.auth-divider::before,
.auth-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--cn-border);
}

.auth-divider span {
  font-size: 0.8rem;
  color: var(--cn-text-muted);
  white-space: nowrap;
}

/* Social Login */
.auth-social {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.auth-social-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.6rem;
  border-radius: var(--cn-radius-sm);
  border: 1px solid var(--cn-border);
  background: var(--cn-dark-4);
  color: var(--cn-text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--cn-transition);
}

.auth-social-btn i {
  font-size: 1.1rem;
}

.auth-social-btn.wechat:hover {
  border-color: #07c160;
  color: #07c160;
  background: rgba(7, 193, 96, 0.08);
}

.auth-social-btn.qq:hover {
  border-color: #12b7f5;
  color: #12b7f5;
  background: rgba(18, 183, 245, 0.08);
}

/* Auth Footer */
.auth-footer {
  text-align: center;
  font-size: 0.85rem;
  color: var(--cn-text-muted);
}

.auth-footer a {
  color: var(--cn-accent-light);
  font-weight: 600;
}

/* ----- Captcha Slider ----- */
.captcha-row {
  width: 100%;
}

.captcha-slider {
  position: relative;
  width: 100%;
  user-select: none;
}

.captcha-track {
  position: relative;
  height: 42px;
  background: var(--cn-dark-2);
  border: 1px solid var(--cn-border);
  border-radius: var(--cn-radius-sm);
  overflow: hidden;
}

.captcha-track-text {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.82rem;
  color: var(--cn-text-muted);
  pointer-events: none;
  transition: opacity 0.3s;
}

.captcha-fill {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 0;
  background: rgba(59, 130, 246, 0.1);
  border-radius: var(--cn-radius-sm) 0 0 var(--cn-radius-sm);
  transition: none;
}

.captcha-thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 38px;
  height: 38px;
  background: var(--cn-dark-6);
  border: 1px solid var(--cn-border-hover);
  border-radius: calc(var(--cn-radius-sm) - 2px);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cn-text-secondary);
  font-size: 0.9rem;
  cursor: grab;
  transition: background 0.2s;
  z-index: 2;
}

.captcha-thumb:active {
  cursor: grabbing;
}

.captcha-thumb:hover {
  background: var(--cn-dark-7);
}

.captcha-slider.verified .captcha-track {
  border-color: var(--cn-green);
}

.captcha-slider.verified .captcha-fill {
  width: 100% !important;
  background: rgba(16, 185, 129, 0.1);
}

.captcha-slider.verified .captcha-thumb {
  left: calc(100% - 40px) !important;
  background: var(--cn-green);
  border-color: var(--cn-green);
  color: white;
  cursor: default;
}

.captcha-slider.verified .captcha-track-text {
  color: var(--cn-green);
}

/* Responsive */
@media (max-width: 480px) {
  .auth-modal {
    padding: 2rem 1.25rem 1.5rem;
  }

  .auth-social {
    flex-direction: column;
  }
}

/* ----- Toast notification ----- */
.cn-toast {
  position: fixed;
  top: 100px;
  right: 24px;
  background: var(--cn-dark-5);
  border: 1px solid var(--cn-border-hover);
  border-radius: var(--cn-radius-md);
  padding: 1rem 1.5rem;
  color: var(--cn-text-primary);
  font-size: 0.9rem;
  z-index: 9999;
  box-shadow: var(--cn-shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  transform: translateX(120%);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.cn-toast.show {
  transform: translateX(0);
}

.cn-toast i {
  color: var(--cn-green);
  font-size: 1.1rem;
}

/* ----- Animations ----- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float {
  0%, 100% {
    transform: translate(-50%, -50%) translateY(0);
  }
  50% {
    transform: translate(-50%, -50%) translateY(-20px);
  }
}

.hero-orb-2 {
  animation-name: float2;
}

@keyframes float2 {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-15px);
  }
}

.hero-orb-3 {
  animation-name: float3;
}

@keyframes float3 {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-12px);
  }
}

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

/* Scroll animations */
.fade-in-section {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-section.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ----- SSL Section (Visual + Accordion) ----- */
/* Certificate-style visual (subtle) */
.ssl-cert-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--cn-radius-lg);
  padding: 1.75rem;
  background: linear-gradient(180deg, rgba(34, 34, 45, 0.95) 0%, rgba(26, 26, 34, 0.95) 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--cn-shadow-card);
  transform: translateY(0);
  transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
}

.ssl-cert-card::before {
  content: "";
  position: absolute;
  inset: -2px;
  background: conic-gradient(
    from 180deg,
    rgba(59, 130, 246, 0.0),
    rgba(59, 130, 246, 0.55),
    rgba(139, 92, 246, 0.45),
    rgba(6, 182, 212, 0.35),
    rgba(59, 130, 246, 0.0)
  );
  opacity: 0.55;
  animation: sslBorderSpin 10s linear infinite;
  pointer-events: none;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude;
  -webkit-mask-composite: xor;
  padding: 2px;
  border-radius: inherit;
}

.ssl-cert-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 380px 260px at 15% 10%, rgba(59, 130, 246, 0.16) 0%, transparent 65%),
    radial-gradient(ellipse 340px 240px at 85% 75%, rgba(139, 92, 246, 0.12) 0%, transparent 70%);
  opacity: 0.85;
  pointer-events: none;
}

.ssl-cert-card:hover {
  transform: translateY(-4px);
  border-color: rgba(59, 130, 246, 0.22);
  box-shadow: var(--cn-shadow-md);
}

.ssl-cert-head,
.ssl-cert-body,
.ssl-cert-foot {
  position: relative;
  z-index: 1;
}

.ssl-cert-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.ssl-cert-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.18);
  color: var(--cn-accent-light);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.ssl-cert-https {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.18);
  color: rgba(167, 243, 208, 0.95);
  font-size: 0.78rem;
  font-weight: 800;
}

.ssl-cert-https .dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--cn-green);
  box-shadow: 0 0 0 6px rgba(16, 185, 129, 0.12);
  animation: sslDotPulse 2.4s ease-in-out infinite;
}

.ssl-cert-body {
  padding: 1.25rem 1.25rem 1.15rem;
  border-radius: var(--cn-radius-lg);
  background: rgba(13, 13, 18, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.ssl-cert-mark {
  width: 86px;
  height: 86px;
  position: relative;
  margin-bottom: 1rem;
}

.ssl-cert-mark .mark-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.22) 0%, transparent 68%);
  opacity: 0.95;
}

.ssl-cert-mark .mark-center {
  position: absolute;
  inset: 12px;
  border-radius: 50%;
  background: rgba(20, 20, 25, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--cn-shadow-sm);
  animation: sslFloatSoft 6s ease-in-out infinite;
}

.ssl-cert-mark .mark-center i {
  font-size: 1.7rem;
  background: var(--cn-gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.ssl-cert-title {
  margin: 0 0 0.35rem;
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--cn-text-primary);
  letter-spacing: -0.01em;
}

.ssl-cert-desc {
  margin: 0 0 1rem;
  color: var(--cn-text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

.ssl-cert-metrics {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.6rem;
}

.ssl-cert-metrics .metric {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.6rem 0.75rem;
  border-radius: var(--cn-radius-md);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.ssl-cert-metrics .label {
  font-size: 0.78rem;
  color: var(--cn-text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.ssl-cert-metrics .value {
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--cn-text-primary);
}

.ssl-cert-foot {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 1.15rem;
}

.ssl-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.42rem 0.7rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--cn-text-secondary);
  font-size: 0.82rem;
  transition: var(--cn-transition);
}

.ssl-chip i {
  color: var(--cn-accent-light);
}

.ssl-cert-card:hover .ssl-chip {
  border-color: rgba(59, 130, 246, 0.22);
}

.ssl-accordion.accordion {
  --bs-accordion-color: var(--cn-text-primary);
  --bs-accordion-bg: transparent;
  --bs-accordion-border-color: transparent;
  --bs-accordion-border-radius: var(--cn-radius-lg);
  --bs-accordion-btn-focus-box-shadow: none;
  --bs-accordion-active-color: var(--cn-text-primary);
  --bs-accordion-active-bg: rgba(255, 255, 255, 0.03);
}

.ssl-accordion .accordion-item {
  background: rgba(20, 20, 25, 0.65);
  border: 1px solid var(--cn-border);
  border-radius: var(--cn-radius-lg);
  overflow: hidden;
  box-shadow: var(--cn-shadow-sm);
}

.ssl-accordion .accordion-item + .accordion-item {
  margin-top: 0.9rem;
}

.ssl-accordion .accordion-button {
  background: transparent;
  color: var(--cn-text-primary);
  font-weight: 700;
  padding: 1.15rem 1.25rem;
  border: none;
  position: relative;
  transition: background 0.25s ease, color 0.25s ease;
}

.ssl-accordion .accordion-button::after {
  filter: invert(1);
  opacity: 0.7;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.ssl-accordion .accordion-button:hover {
  background: rgba(255, 255, 255, 0.03);
}

.ssl-accordion .accordion-button:not(.collapsed) {
  background: rgba(59, 130, 246, 0.08);
}

.ssl-accordion .accordion-button:not(.collapsed)::after {
  opacity: 0.95;
}

/* Expanded highlight: subtle accent bar + gradient title */
.ssl-accordion .accordion-button:not(.collapsed)::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 3px;
  border-radius: 999px;
  background: var(--cn-gradient-accent);
  box-shadow: 0 0 0 6px rgba(59, 130, 246, 0.06);
}

.ssl-accordion .accordion-button:not(.collapsed) > span:last-child {
  background: var(--cn-gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.ssl-accordion .accordion-button:not(.collapsed) + .accordion-collapse .accordion-body {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 1rem;
}

.ssl-accordion .accordion-body {
  color: var(--cn-text-secondary);
  line-height: 1.75;
  padding: 0 1.25rem 1.25rem;
  animation: sslBodyIn 0.35s ease-out;
}

.ssl-accordion .acc-icon {
  width: 34px;
  height: 34px;
  border-radius: var(--cn-radius-sm);
  margin-right: 0.75rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(59, 130, 246, 0.12);
  border: 1px solid rgba(59, 130, 246, 0.18);
  color: var(--cn-accent-light);
  flex-shrink: 0;
}

.ssl-accordion .accordion-button:not(.collapsed) .acc-icon {
  background: var(--cn-gradient-accent);
  border-color: transparent;
  color: #fff;
}

@keyframes sslBorderSpin {
  to { transform: rotate(360deg); }
}

@keyframes sslDotPulse {
  0%, 100% { transform: scale(0.92); box-shadow: 0 0 0 6px rgba(16, 185, 129, 0.10); opacity: 0.9; }
  50% { transform: scale(1.06); box-shadow: 0 0 0 10px rgba(16, 185, 129, 0.14); opacity: 1; }
}

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

@keyframes sslBodyIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .ssl-cert-card::before,
  .ssl-cert-https .dot,
  .ssl-cert-mark .mark-center,
  .ssl-accordion .accordion-body {
    animation: none !important;
  }
}

/* ----- Back to top ----- */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 44px;
  height: 44px;
  background: var(--cn-gradient-accent);
  border: none;
  border-radius: var(--cn-radius-md);
  color: white;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--cn-transition);
  z-index: 999;
  box-shadow: var(--cn-shadow-md);
}

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

.back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: var(--cn-shadow-glow);
}

/* ----- Responsive ----- */
@media (max-width: 991.98px) {
  .hero-visual {
    display: none;
  }

  .hero-content {
    text-align: center;
  }

  .hero-description {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero-stats {
    justify-content: center;
  }

  .section-title {
    font-size: 1.85rem;
  }
}

@media (max-width: 767.98px) {
  .cn-section {
    padding: 4rem 0;
  }

  .hero-stats {
    gap: 1.5rem;
  }

  .hero-stat .stat-value {
    font-size: 1.35rem;
  }

  .domain-search-box {
    padding: 1.5rem;
  }

  .domain-input-group {
    flex-direction: column;
    gap: 0.75rem;
  }

  .domain-input-group input {
    border-right: 1px solid var(--cn-border-hover);
    border-radius: var(--cn-radius-md);
  }

  .domain-input-group .btn-search {
    border-radius: var(--cn-radius-md);
  }

  .cn-cta {
    padding: 3rem 1.5rem;
  }
}