/* ========================================
   智能表格 · 精致版 v4.0
   Premium Design Edition - Refined
   ======================================== */

/* ===== Google Fonts Import ===== */
/* 使用国内镜像加载 Google Fonts */
@import url('https://fonts.loli.net/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

/* ===== Design Tokens ===== */
:root {
  /* 品牌色系 - 更深邃的靛蓝色 */
  --brand-primary: #4338CA;
  --brand-primary-dark: #3730A3;
  --brand-primary-light: #E0E7FF;
  --brand-secondary: #059669;
  --brand-gradient: linear-gradient(135deg, #4338CA 0%, #6366F1 50%, #8B5CF6 100%);
  --brand-gradient-hover: linear-gradient(135deg, #3730A3 0%, #4F46E5 50%, #7C3AED 100%);
  --brand-gradient-soft: linear-gradient(135deg, rgba(67,56,202,0.08) 0%, rgba(99,102,241,0.04) 100%);
  --brand-gradient-radial: radial-gradient(ellipse at 50% 0%, rgba(99,102,241,0.15) 0%, transparent 50%);
  
  /* 中性色 - 更温暖的灰度 */
  --gray-950: #0F172A;
  --gray-900: #1E293B;
  --gray-800: #334155;
  --gray-700: #475569;
  --gray-600: #64748B;
  --gray-500: #94A3B8;
  --gray-400: #CBD5E1;
  --gray-300: #E2E8F0;
  --gray-200: #F1F5F9;
  --gray-100: #F8FAFC;
  --gray-50: #FAFBFD;
  --white: #FFFFFF;
  
  /* 语义色 - 更精致的色调 */
  --success: #059669;
  --success-light: #D1FAE5;
  --success-glow: rgba(5, 150, 105, 0.2);
  --warning: #D97706;
  --warning-light: #FEF3C7;
  --error: #DC2626;
  --info: #2563EB;
  
  /* 精致阴影系统 - 多层次 */
  --shadow-xs: 0 1px 2px rgba(15,23,42,0.04);
  --shadow-sm: 0 1px 3px rgba(15,23,42,0.06), 0 1px 2px rgba(15,23,42,0.04);
  --shadow-md: 0 4px 6px -1px rgba(15,23,42,0.08), 0 2px 4px -1px rgba(15,23,42,0.04);
  --shadow-lg: 0 10px 15px -3px rgba(15,23,42,0.08), 0 4px 6px -2px rgba(15,23,42,0.04);
  --shadow-xl: 0 20px 25px -5px rgba(15,23,42,0.10), 0 10px 10px -5px rgba(15,23,42,0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(15,23,42,0.18);
  --shadow-glow: 0 0 60px -12px rgba(67, 56, 202, 0.35);
  --shadow-glow-strong: 0 0 80px -8px rgba(67, 56, 202, 0.45);
  --shadow-card: 0 1px 3px rgba(15,23,42,0.06), 0 6px 16px rgba(15,23,42,0.06);
  --shadow-card-hover: 0 12px 40px rgba(15,23,42,0.12);
  --shadow-inner: inset 0 2px 4px rgba(15,23,42,0.04);
  
  /* 玻璃态效果 */
  --glass-bg: rgba(255, 255, 255, 0.75);
  --glass-border: rgba(255, 255, 255, 0.2);
  --glass-blur: blur(24px) saturate(180%);
  
  /* 布局 */
  --container-lg: 1280px;
  --container: 1140px;
  --container-sm: 960px;
  --header-height: 64px;
  
  /* 圆角 - 更圆润 */
  --radius-xs: 6px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-full: 9999px;
  
  /* 动画 - 更流畅 */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring: cubic-bezier(0.175, 0.885, 0.32, 1.275);
  
  /* 字体 - 精品级别 */
  --font-display: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "SF Pro Display", system-ui, sans-serif;
  --font-sans: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "SF Pro Text", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", "Fira Code", monospace;
}

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

html {
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
  font-size: 16px;
  text-rendering: optimizeLegibility;
}

body {
  background: #fff;
  color: var(--gray-600);
  line-height: 1.7;
  overflow-x: hidden;
  font-feature-settings: "kern" 1, "liga" 1, "calt" 1;
  position: relative;
}

/* 全局背景纹理 */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 25% 10%, rgba(67, 56, 202, 0.03) 0%, transparent 40%),
    radial-gradient(circle at 75% 80%, rgba(139, 92, 246, 0.03) 0%, transparent 40%);
  pointer-events: none;
  z-index: -1;
}

body.modal-open {
  overflow: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: var(--gray-900);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.03em;
}

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.25s var(--ease-smooth);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

img { max-width: 100%; display: block; }
ul { list-style: none; }

/* 选中文字样式 */
::selection {
  background: var(--brand-primary);
  color: white;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.container-lg {
  max-width: var(--container-lg);
  margin: 0 auto;
  padding: 0 32px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ===== 导航栏 - 精致设计 ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  transition: all 0.4s var(--ease-out);
}

/* 纯白背景，无分割线 */
.header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: #fff;
}

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

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--gray-900);
  letter-spacing: -0.02em;
  z-index: 10;
}

.logo:hover {
  opacity: 0.9;
}

.logo:hover .logo-icon {
  transform: scale(1.05);
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: var(--brand-gradient);
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 16px;
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(67, 56, 202, 0.25);
  transition: transform 0.2s ease;
}

/* 主导航 - 扁平化设计 */
.nav-main {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-item {
  position: relative;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-600);
  transition: color 0.15s ease;
  white-space: nowrap;
}

.nav-item:hover {
  color: var(--gray-900);
}

.nav-item.active {
  color: var(--gray-900);
}

/* 下拉菜单 - 精简设计 */
.nav-dropdown {
  position: relative;
}

.nav-dropdown-trigger {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-dropdown-trigger .dropdown-arrow {
  font-size: 8px;
  opacity: 0.5;
  transition: transform 0.2s;
}

.nav-dropdown:hover .dropdown-arrow {
  transform: rotate(180deg);
}

.nav-dropdown-content {
  position: absolute;
  top: calc(100% + 16px);
  left: 50%;
  transform: translateX(-50%);
  min-width: 280px;
  padding: 6px;
  background: white;
  border-radius: 12px;
  box-shadow: 
    0 0 0 1px rgba(0,0,0,0.04),
    0 8px 30px rgba(0,0,0,0.12);
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(8px);
  transition: all 0.2s var(--ease-out);
}

.nav-dropdown:hover .nav-dropdown-content {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.dropdown-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 8px;
  transition: background 0.15s ease;
}

.dropdown-item:hover {
  background: var(--gray-50);
}

.dropdown-icon {
  width: 36px;
  height: 36px;
  background: var(--gray-100);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-600);
  font-size: 18px;
  flex-shrink: 0;
  transition: all 0.15s ease;
}

.dropdown-item:hover .dropdown-icon {
  background: var(--brand-primary);
  color: white;
}

.dropdown-text {
  padding-top: 1px;
}

.dropdown-text h4 {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 2px;
  color: var(--gray-900);
}

.dropdown-text p {
  font-size: 11px;
  color: var(--gray-500);
  line-height: 1.4;
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  z-index: 10;
}

/* Header 中的按钮 - 渐变样式 */
.header-actions .btn {
  padding: 8px 18px;
  font-size: 13px;
  border-radius: 8px;
}

.header-actions .btn-primary {
  background: var(--brand-gradient);
  color: white;
  box-shadow: 0 2px 8px rgba(67, 56, 202, 0.25);
}

.header-actions .btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(67, 56, 202, 0.35);
}

.mobile-menu-btn {
  display: none;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: var(--gray-700);
  border-radius: var(--radius-md);
  transition: all 0.2s;
}

.mobile-menu-btn:hover {
  background: var(--gray-100);
}

/* ===== 按钮系统 - 精致版 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 24px;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all 0.3s var(--ease-out);
  position: relative;
  overflow: hidden;
  cursor: pointer;
  white-space: nowrap;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
  transition: left 0.5s var(--ease-out);
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: var(--gray-900);
  color: white;
  box-shadow: 
    var(--shadow-sm),
    inset 0 1px 0 rgba(255,255,255,0.1),
    inset 0 -1px 0 rgba(0,0,0,0.1);
}

.btn-primary:hover {
  background: var(--gray-800);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.btn-secondary {
  background: white;
  color: var(--gray-700);
  border: 1px solid var(--gray-300);
  box-shadow: var(--shadow-xs);
}

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

.btn-gradient {
  background: var(--brand-gradient);
  color: white;
  border: none;
  box-shadow: 0 2px 12px rgba(67, 56, 202, 0.3);
}

.btn-gradient:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(67, 56, 202, 0.4);
}

.btn-ghost {
  background: transparent;
  color: var(--gray-600);
  padding: 8px 14px;
}

.btn-ghost:hover {
  color: var(--gray-900);
}

.btn-lg {
  padding: 14px 28px;
  font-size: 15px;
  border-radius: 10px;
  gap: 10px;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
  border-radius: var(--radius-sm);
}

/* ===== Hero 区域 - 精致版 ===== */
.hero {
  padding-top: 120px;
  padding-bottom: 56px;
  text-align: center;
  position: relative;
  overflow: hidden;
  background: #fff;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

/* 主光晕 - 中央紫色 */
.hero-bg::before {
  content: '';
  position: absolute;
  top: -400px;
  left: 50%;
  transform: translateX(-50%);
  width: 1600px;
  height: 1200px;
  background: 
    radial-gradient(ellipse 60% 50% at 50% 0%, rgba(67, 56, 202, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse 40% 30% at 50% 10%, rgba(99, 102, 241, 0.12) 0%, transparent 45%);
  animation: heroGlow 8s ease-in-out infinite alternate;
}

/* 右侧绿色光晕 */
.hero-bg::after {
  content: '';
  position: absolute;
  top: 100px;
  right: -10%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(5, 150, 105, 0.06) 0%, transparent 50%);
  animation: floatRight 10s ease-in-out infinite;
}

@keyframes heroGlow {
  0% { opacity: 0.8; transform: translateX(-50%) scale(1); }
  100% { opacity: 1; transform: translateX(-50%) scale(1.05); }
}

@keyframes floatRight {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(-30px, 20px); }
}

/* 额外装饰光点 */
.hero::after {
  content: '';
  position: absolute;
  top: 20%;
  left: 5%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.04) 0%, transparent 50%);
  animation: floatLeft 12s ease-in-out infinite;
  pointer-events: none;
}

@keyframes floatLeft {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(20px, -30px); }
}

/* 网格背景 */
.hero .container {
  position: relative;
  z-index: 1;
}

/* Hero Badge - 简洁版 */
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: linear-gradient(135deg, #ECFDF5 0%, #D1FAE5 100%);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
  color: #065F46;
  margin-bottom: 28px;
  animation: fadeInDown 0.6s var(--ease-out) backwards;
}

.hero-badge i {
  font-size: 14px;
  color: #10B981;
}

.hero-badge strong {
  font-weight: 700;
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Hero Title - 一行排布 */
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 20px;
  letter-spacing: -0.03em;
  animation: fadeInUp 0.6s var(--ease-out) 0.1s backwards;
}

.hero-title-highlight {
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-left: 0.15em;
}

/* Hero Desc */
.hero-desc {
  font-size: 1.125rem;
  color: var(--gray-500);
  max-width: 540px;
  margin: 0 auto 24px;
  line-height: 1.7;
  animation: fadeInUp 0.6s var(--ease-out) 0.2s backwards;
}

/* 数据主权标语 */
.hero-tagline {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 13px;
  color: var(--gray-400);
  margin-bottom: 32px;
  animation: fadeInUp 0.6s var(--ease-out) 0.25s backwards;
}

.hero-tagline i {
  font-size: 16px;
  color: #10B981;
}

.hero-tagline span {
  letter-spacing: 0.02em;
}

/* Hero CTA */
.hero-cta {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.6s var(--ease-out) 0.3s backwards;
}

/* 隐藏旧的 offer 样式 */
.hero-offer {
  display: none;
}

.hero-offer-hidden::before {
  content: '🎁';
  font-size: 16px;
}

.hero-offer strong {
  color: var(--brand-primary);
  font-weight: 700;
  background: var(--brand-primary-light);
  padding: 2px 10px;
  border-radius: var(--radius-sm);
}

/* ===== 指标条 ===== */
.metrics-bar {
  display: flex;
  justify-content: center;
  gap: 0;
  padding: 40px 0;
  margin-top: 48px;
  animation: fadeInUp 0.6s var(--ease-out) 0.4s backwards;
}

.metric-item {
  text-align: center;
  padding: 0 32px;
}

.metric-item:not(:last-child) {
  border-right: 1px solid var(--gray-200);
}

.metric-value {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--gray-900);
  line-height: 1;
  margin-bottom: 4px;
  letter-spacing: -0.02em;
}

.metric-label {
  font-size: 12px;
  color: var(--gray-500);
  font-weight: 500;
}

/* ===== 产品演示 - 精致版 ===== */
.product-demo {
  margin-top: 80px;
  position: relative;
  max-width: 1100px;
  margin-left: auto;
  margin-right: auto;
  animation: fadeInUp 1s var(--ease-out) 0.65s backwards;
  perspective: 1000px;
}

/* 阴影装饰 */
.product-demo::before {
  content: '';
  position: absolute;
  bottom: -40px;
  left: 10%;
  right: 10%;
  height: 80px;
  background: radial-gradient(ellipse at center, rgba(67, 56, 202, 0.15) 0%, transparent 70%);
  filter: blur(30px);
  z-index: -1;
}

.demo-window {
  background: white;
  border-radius: 16px;
  box-shadow: 
    0 0 0 1px rgba(0,0,0,0.04),
    0 25px 50px -12px rgba(0, 0, 0, 0.15);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.demo-window:hover {
  transform: translateY(-4px);
  box-shadow: 
    0 0 0 1px rgba(0,0,0,0.04),
    0 30px 60px -15px rgba(0, 0, 0, 0.2);
}

/* 图片轮播版本的 demo */
.demo-window-image {
  background: #fff;
}

.demo-carousel {
  position: relative;
  overflow: hidden;
}

.carousel-slides {
  position: relative;
  width: 100%;
}

.carousel-slide {
  width: 100%;
  height: auto;
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  opacity: 0;
  transition: opacity 0.6s ease;
}

.carousel-slide:first-child {
  position: relative;
}

.carousel-slide.active {
  opacity: 1;
  z-index: 1;
}

.carousel-indicators {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 10;
}

.carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: all 0.3s ease;
  padding: 0;
}

.carousel-dot:hover {
  background: rgba(255, 255, 255, 0.8);
}

.carousel-dot.active {
  background: #fff;
  width: 24px;
  border-radius: 4px;
}

.demo-header {
  height: 48px;
  background: #F8FAFC;
  border-bottom: 1px solid #E2E8F0;
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 10px;
}

.demo-dots {
  display: flex;
  gap: 8px;
}

.demo-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  box-shadow: 
    inset 0 2px 4px rgba(0,0,0,0.15),
    0 1px 2px rgba(255,255,255,0.8);
  transition: transform 0.2s var(--ease-out);
}

.demo-dot:hover {
  transform: scale(1.1);
}

.demo-dot:nth-child(1) { background: linear-gradient(135deg, #FF6B6B, #FF5F57); }
.demo-dot:nth-child(2) { background: linear-gradient(135deg, #FFD93D, #FEBC2E); }
.demo-dot:nth-child(3) { background: linear-gradient(135deg, #6BCB77, #28C840); }

.demo-url {
  margin-left: 24px;
  padding: 8px 16px;
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 12px;
  color: var(--gray-500);
  font-family: var(--font-mono);
  box-shadow: var(--shadow-inner);
  display: flex;
  align-items: center;
  gap: 8px;
}

.demo-url::before {
  content: '🔒';
  font-size: 11px;
}

.demo-content {
  display: flex;
  height: 480px;
}

.demo-sidebar {
  width: 240px;
  background: linear-gradient(180deg, #F8FAFC 0%, #F1F5F9 100%);
  border-right: 1px solid var(--gray-200);
  padding: 24px;
  flex-shrink: 0;
}

.demo-nav-title {
  font-size: 10px;
  font-weight: 700;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
  padding-left: 14px;
}

.demo-nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-600);
  margin-bottom: 4px;
  cursor: pointer;
  transition: all 0.25s var(--ease-out);
}

.demo-nav-item:hover {
  background: white;
  color: var(--gray-800);
  transform: translateX(4px);
}

.demo-nav-item.active {
  background: white;
  color: var(--brand-primary);
  font-weight: 600;
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
}

.demo-nav-item i {
  font-size: 16px;
  opacity: 0.7;
}

.demo-nav-item.active i {
  opacity: 1;
}

.demo-main {
  flex: 1;
  padding: 28px;
  background: linear-gradient(180deg, #FFFFFF 0%, #FAFBFD 100%);
  position: relative;
  overflow: hidden;
}

/* Video Play Button */
.video-play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80px;
  height: 80px;
  background: var(--brand-gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 30px;
  padding-left: 4px;
  cursor: pointer;
  box-shadow: 
    0 8px 32px rgba(67, 56, 202, 0.4),
    inset 0 1px 0 rgba(255,255,255,0.2);
  transition: all 0.4s var(--ease-out);
  z-index: 10;
}

.video-play-btn:hover {
  transform: translate(-50%, -50%) scale(1.1);
  box-shadow: 
    0 12px 40px rgba(67, 56, 202, 0.5),
    inset 0 1px 0 rgba(255,255,255,0.2);
}

.video-play-btn::before {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: var(--brand-gradient);
  animation: ripple 2.5s cubic-bezier(0.4, 0, 0.2, 1) infinite;
  z-index: -1;
}

.video-play-btn::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: var(--brand-gradient);
  animation: ripple 2.5s cubic-bezier(0.4, 0, 0.2, 1) infinite 0.8s;
  z-index: -1;
}

@keyframes ripple {
  0% { transform: scale(1); opacity: 0.5; }
  100% { transform: scale(2); opacity: 0; }
}

/* AI Assistant */
.ai-assistant {
  position: absolute;
  bottom: 28px;
  left: 28px;
  right: 28px;
  background: linear-gradient(135deg, var(--gray-900) 0%, #1a1f35 100%);
  border-radius: var(--radius-lg);
  padding: 18px 22px;
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: 
    0 20px 40px rgba(0,0,0,0.25),
    inset 0 1px 0 rgba(255,255,255,0.05);
  animation: slideUp 0.6s var(--ease-out) 1.2s backwards;
  border: 1px solid rgba(255,255,255,0.05);
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.ai-icon {
  width: 38px;
  height: 38px;
  background: var(--brand-gradient);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 18px;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(67, 56, 202, 0.4);
  animation: aiPulse 3s ease-in-out infinite;
}

@keyframes aiPulse {
  0%, 100% { box-shadow: 0 4px 12px rgba(67, 56, 202, 0.4); }
  50% { box-shadow: 0 4px 20px rgba(67, 56, 202, 0.6); }
}

.ai-text {
  flex: 1;
  color: rgba(255,255,255,0.9);
  font-size: 13px;
  font-family: var(--font-mono);
  line-height: 1.5;
}

.ai-cursor {
  display: inline-block;
  width: 2px;
  height: 16px;
  background: var(--brand-primary);
  margin-left: 3px;
  border-radius: 1px;
  animation: blink 0.8s step-end infinite;
  vertical-align: middle;
}

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

/* Demo Stats */
.demo-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 28px;
}

.stat-card {
  padding: 24px;
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  transition: all 0.35s var(--ease-out);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gray-200);
  transition: background 0.3s;
}

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

.stat-card:hover::before {
  background: var(--brand-gradient);
}

.stat-card.highlight {
  background: linear-gradient(135deg, #ECFDF5 0%, #D1FAE5 100%);
  border-color: rgba(5, 150, 105, 0.25);
}

.stat-card.highlight::before {
  background: linear-gradient(90deg, #059669, #10B981);
}

.stat-label {
  font-size: 11px;
  color: var(--gray-500);
  margin-bottom: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.stat-value {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 800;
  color: var(--gray-900);
  letter-spacing: -0.03em;
}

.stat-change {
  font-size: 12px;
  color: var(--success);
  margin-top: 8px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ===== Logo 墙 ===== */
/* 客户展示区 - 扁平醒目版 */
.logos-section {
  padding: 56px 0;
  background: #F8FAFC;
}

.logos-glass {
  padding: 0;
}

/* 数字统计 */
.logos-stats {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 56px;
  margin-bottom: 32px;
}

.logos-stat {
  text-align: center;
}

.stat-num {
  display: block;
  font-size: 42px;
  font-weight: 800;
  color: #0F172A;
  font-family: var(--font-display);
  line-height: 1;
  letter-spacing: -0.02em;
}

.stat-text {
  display: block;
  font-size: 14px;
  color: #64748B;
  margin-top: 8px;
  font-weight: 500;
}

.logos-divider {
  width: 1px;
  height: 48px;
  background: #E2E8F0;
}

/* 企业名称滚动 */
.logos-marquee {
  position: relative;
  overflow: hidden;
  margin-bottom: 28px;
  padding: 16px 0;
  background: #fff;
  border-top: 1px solid #E2E8F0;
  border-bottom: 1px solid #E2E8F0;
  mask-image: linear-gradient(to right, transparent, black 5%, black 95%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 5%, black 95%, transparent);
}

.logos-track {
  display: flex;
  gap: 64px;
  animation: marquee 20s linear infinite;
  width: max-content;
}

.logos-track:hover {
  animation-play-state: paused;
}

@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.logo-name {
  font-size: 15px;
  font-weight: 700;
  color: #1E293B;
  white-space: nowrap;
  transition: color 0.2s;
  letter-spacing: 0.01em;
}

.logo-name:hover {
  color: var(--brand-primary);
}

/* 行业标签 */
.logos-industries {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.industry-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  background: #fff;
  border: 1px solid #E2E8F0;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  color: #334155;
  transition: all 0.2s ease;
}

.industry-tag i {
  font-size: 16px;
  color: var(--brand-primary);
}

.industry-tag:hover {
  border-color: var(--brand-primary);
  background: var(--brand-primary);
  color: #fff;
}

.industry-tag:hover i {
  color: #fff;
}

/* ===== 多视图展示区域 ===== */
.views-section {
  background: linear-gradient(180deg, #fff 0%, #F8FAFC 100%);
  position: relative;
  overflow: hidden;
}

.views-section::before {
  content: '';
  position: absolute;
  top: 20%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.views-section::after {
  content: '';
  position: absolute;
  bottom: 10%;
  right: -5%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.views-tabs {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-bottom: 56px;
  flex-wrap: wrap;
  background: #F1F5F9;
  padding: 6px;
  border-radius: 14px;
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
}

.view-tab {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px;
  background: transparent;
  border: none;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 600;
  color: #64748B;
  cursor: pointer;
  transition: all 0.25s ease;
  position: relative;
}

.view-tab i {
  font-size: 18px;
  transition: transform 0.25s ease;
}

.view-tab:hover {
  color: #334155;
}

.view-tab:hover i {
  transform: scale(1.1);
}

.view-tab.active {
  background: #fff;
  color: var(--brand-primary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.view-tab.active i {
  color: var(--brand-primary);
}

.views-content {
  position: relative;
  z-index: 1;
}

.view-panel {
  display: none;
  gap: 64px;
  align-items: center;
}

.view-panel.active {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  animation: viewSlideIn 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes viewSlideIn {
  from { 
    opacity: 0; 
    transform: translateY(20px) scale(0.98);
  }
  to { 
    opacity: 1; 
    transform: translateY(0) scale(1);
  }
}

.view-info {
  padding-right: 20px;
}

.view-info h3 {
  font-size: 1.75rem;
  font-weight: 800;
  color: #0F172A;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.view-info > p {
  font-size: 16px;
  color: #64748B;
  line-height: 1.75;
  margin-bottom: 28px;
}

.view-features {
  list-style: none;
  padding: 0;
  margin: 0;
  background: #F8FAFC;
  border-radius: 12px;
  padding: 20px 24px;
}

.view-features li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  font-size: 14px;
  color: #334155;
  border-bottom: 1px solid #E2E8F0;
}

.view-features li:last-child {
  border-bottom: none;
}

.view-features li i {
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #10B981 0%, #059669 100%);
  color: #fff;
  font-size: 12px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* 视图预览 Mockup */
.view-preview {
  display: flex;
  justify-content: center;
  perspective: 1000px;
}

.view-mockup {
  background: #fff;
  border-radius: 16px;
  box-shadow: 
    0 0 0 1px rgba(0,0,0,0.03),
    0 4px 6px rgba(0,0,0,0.04),
    0 10px 20px rgba(0,0,0,0.06),
    0 25px 50px rgba(0,0,0,0.1);
  overflow: hidden;
  width: 100%;
  max-width: 520px;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
  transform: rotateY(-2deg) rotateX(2deg);
}

.view-mockup:hover {
  transform: rotateY(0deg) rotateX(0deg) translateY(-8px);
  box-shadow: 
    0 0 0 1px rgba(0,0,0,0.03),
    0 8px 16px rgba(0,0,0,0.06),
    0 20px 40px rgba(0,0,0,0.1),
    0 40px 80px rgba(0,0,0,0.12);
}

.mockup-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  background: linear-gradient(180deg, #FAFBFC 0%, #F1F5F9 100%);
  border-bottom: 1px solid #E2E8F0;
}

.mockup-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #E2E8F0;
}

.mockup-dot:first-child { background: #FF5F57; }
.mockup-dot:nth-child(2) { background: #FEBC2E; }
.mockup-dot:nth-child(3) { background: #28C840; }

/* 表格视图 Mockup */
.mockup-table {
  padding: 0;
}

.mockup-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 12px;
  padding: 12px 16px;
  font-size: 13px;
  color: #334155;
  border-bottom: 1px solid #F1F5F9;
  transition: background 0.15s ease;
}

.mockup-row:hover:not(.mockup-row-header) {
  background: #F8FAFC;
}

.mockup-row-header {
  font-weight: 600;
  color: #64748B;
  background: linear-gradient(180deg, #F8FAFC 0%, #F1F5F9 100%);
  border-bottom: 1px solid #E2E8F0;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.status-done { 
  color: #10B981; 
  font-weight: 600;
  background: #ECFDF5;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 11px;
}
.status-progress { 
  color: #F59E0B; 
  font-weight: 600;
  background: #FFFBEB;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 11px;
}
.status-todo { 
  color: #64748B; 
  font-weight: 600;
  background: #F1F5F9;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 11px;
}

/* 看板视图 Mockup */
.mockup-kanban {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  padding: 16px;
  background: #F8FAFC;
}

.kanban-column {
  background: #fff;
  border-radius: 10px;
  padding: 12px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

.kanban-title {
  font-size: 11px;
  font-weight: 700;
  color: #64748B;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.kanban-title span {
  background: var(--brand-primary);
  color: #fff;
  padding: 2px 7px;
  border-radius: 10px;
  font-size: 10px;
  font-weight: 600;
}

.kanban-card {
  background: #F8FAFC;
  padding: 12px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 500;
  color: #334155;
  margin-bottom: 8px;
  border: 1px solid #E2E8F0;
  transition: all 0.2s ease;
  cursor: grab;
}

.kanban-card:hover {
  background: #fff;
  border-color: var(--brand-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.15);
}

.kanban-card.highlight {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.08) 0%, rgba(139, 92, 246, 0.08) 100%);
  border-color: var(--brand-primary);
}

/* 表单视图 Mockup */
.mockup-form {
  padding: 28px;
  background: linear-gradient(180deg, #fff 0%, #FAFBFC 100%);
}

.form-title {
  font-size: 18px;
  font-weight: 700;
  color: #0F172A;
  margin-bottom: 24px;
  text-align: center;
}

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

.form-field label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: #334155;
  margin-bottom: 8px;
}

.form-field input {
  width: 100%;
  padding: 12px 14px;
  border: 2px solid #E2E8F0;
  border-radius: 10px;
  font-size: 14px;
  color: #334155;
  background: #fff;
  transition: all 0.2s ease;
}

.form-field input:focus {
  outline: none;
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.form-submit {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, #4F46E5 0%, #7C3AED 100%);
  color: #fff;
  border: none;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  margin-top: 12px;
  transition: all 0.2s ease;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.3);
}

.form-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

/* 日历视图 Mockup */
.mockup-calendar {
  padding: 24px;
}

.calendar-header {
  font-size: 15px;
  font-weight: 700;
  color: #0F172A;
  text-align: center;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.calendar-header::before,
.calendar-header::after {
  content: '‹';
  font-size: 20px;
  color: #94A3B8;
  cursor: pointer;
}

.calendar-header::after {
  content: '›';
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  text-align: center;
  font-size: 12px;
}

.calendar-grid span {
  padding: 10px 4px;
  color: #94A3B8;
  font-weight: 500;
  border-radius: 8px;
  transition: all 0.15s ease;
}

.calendar-grid span:nth-child(n+8) {
  color: #334155;
  cursor: pointer;
}

.calendar-grid span:nth-child(n+8):hover {
  background: #F1F5F9;
}

.calendar-grid .today {
  background: linear-gradient(135deg, #4F46E5 0%, #7C3AED 100%);
  color: #fff;
  border-radius: 8px;
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

.calendar-grid .has-event {
  position: relative;
  background: rgba(99, 102, 241, 0.1);
  color: var(--brand-primary);
  font-weight: 600;
}

.calendar-grid .has-event::after {
  content: '';
  position: absolute;
  bottom: 3px;
  left: 50%;
  transform: translateX(-50%);
  width: 5px;
  height: 5px;
  background: #F59E0B;
  border-radius: 50%;
}

/* 画廊视图 Mockup */
.mockup-gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  padding: 18px;
  background: #F8FAFC;
}

.gallery-card {
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
  transition: all 0.25s ease;
  cursor: pointer;
}

.gallery-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.1);
}

.gallery-img {
  height: 70px;
  background: linear-gradient(135deg, #E0E7FF 0%, #C7D2FE 50%, #DDD6FE 100%);
  position: relative;
  overflow: hidden;
}

.gallery-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(45deg, transparent 40%, rgba(255,255,255,0.3) 50%, transparent 60%);
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.gallery-name {
  padding: 12px;
  font-size: 13px;
  font-weight: 600;
  color: #334155;
  text-align: center;
}

/* 仪表盘视图 Mockup */
.mockup-dashboard {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding: 18px;
  background: linear-gradient(180deg, #0F172A 0%, #1E293B 100%);
  border-radius: 0 0 16px 16px;
}

.dash-card {
  background: rgba(255,255,255,0.08);
  backdrop-filter: blur(10px);
  padding: 18px;
  border-radius: 12px;
  text-align: center;
  border: 1px solid rgba(255,255,255,0.1);
}

.dash-num {
  font-size: 28px;
  font-weight: 800;
  background: linear-gradient(135deg, #A5B4FC 0%, #818CF8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.dash-label {
  font-size: 11px;
  color: #94A3B8;
  margin-top: 6px;
  font-weight: 500;
}

.dash-chart {
  grid-column: span 2;
  height: 90px;
  background: rgba(255,255,255,0.05);
  border-radius: 12px;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.08);
}

.dash-chart::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 70%;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 40'%3E%3Cdefs%3E%3ClinearGradient id='g' x1='0%25' y1='0%25' x2='0%25' y2='100%25'%3E%3Cstop offset='0%25' stop-color='%23818CF8' stop-opacity='0.5'/%3E%3Cstop offset='100%25' stop-color='%23818CF8' stop-opacity='0'/%3E%3C/linearGradient%3E%3C/defs%3E%3Cpath d='M0,35 Q25,15 50,25 T100,10 L100,40 L0,40 Z' fill='url(%23g)'/%3E%3Cpath d='M0,35 Q25,15 50,25 T100,10' stroke='%23818CF8' stroke-width='2' fill='none'/%3E%3C/svg%3E") no-repeat center bottom;
  background-size: 100%;
}

@media (max-width: 768px) {
  .view-panel.active {
    grid-template-columns: 1fr;
  }
  
  .view-info {
    order: 2;
  }
  
  .view-preview {
    order: 1;
  }
  
  .views-tabs {
    gap: 6px;
  }
  
  .view-tab {
    padding: 10px 14px;
    font-size: 13px;
  }
  
  .view-tab span {
    display: none;
  }
}

/* ===== 通用区块样式 ===== */
.section {
  padding: 64px 0;
  position: relative;
}

.section-alt {
  background: linear-gradient(180deg, #FAFBFC 0%, #F8FAFC 100%);
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 36px;
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  color: var(--brand-primary);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 20px;
  padding: 8px 16px;
  background: var(--brand-primary-light);
  border-radius: var(--radius-full);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.25rem);
  margin-bottom: 12px;
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.section-desc {
  font-size: 1rem;
  color: var(--gray-500);
  line-height: 1.7;
}

/* ===== 核心能力 - 浅色扁平高级版 ===== */
#features {
  background: #F8FAFC;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.feature-card {
  padding: 24px;
  background: #fff;
  border: 1px solid #E2E8F0;
  border-radius: 14px;
  transition: all 0.25s ease;
  position: relative;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 24px;
  right: 24px;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-primary), #8B5CF6);
  border-radius: 0 0 3px 3px;
  opacity: 0;
  transform: scaleX(0);
  transition: all 0.25s ease;
}

.feature-card:hover {
  border-color: var(--brand-primary);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(99, 102, 241, 0.12);
}

.feature-card:hover::before {
  opacity: 1;
  transform: scaleX(1);
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 20px;
  transition: all 0.25s ease;
}

/* 不同颜色的图标 */
.feature-card:nth-child(1) .feature-icon { background: linear-gradient(135deg, #DBEAFE 0%, #BFDBFE 100%); color: #2563EB; }
.feature-card:nth-child(2) .feature-icon { background: linear-gradient(135deg, #EDE9FE 0%, #DDD6FE 100%); color: #7C3AED; }
.feature-card:nth-child(3) .feature-icon { background: linear-gradient(135deg, #D1FAE5 0%, #A7F3D0 100%); color: #059669; }
.feature-card:nth-child(4) .feature-icon { background: linear-gradient(135deg, #FEE2E2 0%, #FECACA 100%); color: #DC2626; }
.feature-card:nth-child(5) .feature-icon { background: linear-gradient(135deg, #FEF3C7 0%, #FDE68A 100%); color: #D97706; }
.feature-card:nth-child(6) .feature-icon { background: linear-gradient(135deg, #CCFBF1 0%, #99F6E4 100%); color: #0D9488; }
.feature-card:nth-child(7) .feature-icon { background: linear-gradient(135deg, #FCE7F3 0%, #FBCFE8 100%); color: #DB2777; }
.feature-card:nth-child(8) .feature-icon { background: linear-gradient(135deg, #E0E7FF 0%, #C7D2FE 100%); color: #4F46E5; }

.feature-card:hover .feature-icon {
  transform: scale(1.1) rotate(-5deg);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.feature-card:nth-child(1):hover .feature-icon { background: linear-gradient(135deg, #2563EB 0%, #3B82F6 100%); color: #fff; box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3); }
.feature-card:nth-child(2):hover .feature-icon { background: linear-gradient(135deg, #7C3AED 0%, #8B5CF6 100%); color: #fff; box-shadow: 0 8px 20px rgba(124, 58, 237, 0.3); }
.feature-card:nth-child(3):hover .feature-icon { background: linear-gradient(135deg, #059669 0%, #10B981 100%); color: #fff; box-shadow: 0 8px 20px rgba(5, 150, 105, 0.3); }
.feature-card:nth-child(4):hover .feature-icon { background: linear-gradient(135deg, #DC2626 0%, #EF4444 100%); color: #fff; box-shadow: 0 8px 20px rgba(220, 38, 38, 0.3); }
.feature-card:nth-child(5):hover .feature-icon { background: linear-gradient(135deg, #D97706 0%, #F59E0B 100%); color: #fff; box-shadow: 0 8px 20px rgba(217, 119, 6, 0.3); }
.feature-card:nth-child(6):hover .feature-icon { background: linear-gradient(135deg, #0D9488 0%, #14B8A6 100%); color: #fff; box-shadow: 0 8px 20px rgba(13, 148, 136, 0.3); }
.feature-card:nth-child(7):hover .feature-icon { background: linear-gradient(135deg, #DB2777 0%, #EC4899 100%); color: #fff; box-shadow: 0 8px 20px rgba(219, 39, 119, 0.3); }
.feature-card:nth-child(8):hover .feature-icon { background: linear-gradient(135deg, #4F46E5 0%, #6366F1 100%); color: #fff; box-shadow: 0 8px 20px rgba(79, 70, 229, 0.3); }

.feature-title {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: #0F172A;
  transition: color 0.2s ease;
}

.feature-desc {
  font-size: 13px;
  color: #64748B;
  line-height: 1.6;
}

/* 标题悬停颜色与图标呼应 */
.feature-card:nth-child(1):hover .feature-title { color: #2563EB; }
.feature-card:nth-child(2):hover .feature-title { color: #7C3AED; }
.feature-card:nth-child(3):hover .feature-title { color: #059669; }
.feature-card:nth-child(4):hover .feature-title { color: #DC2626; }
.feature-card:nth-child(5):hover .feature-title { color: #D97706; }
.feature-card:nth-child(6):hover .feature-title { color: #0D9488; }
.feature-card:nth-child(7):hover .feature-title { color: #DB2777; }
.feature-card:nth-child(8):hover .feature-title { color: #4F46E5; }

/* 边框悬停颜色 */
.feature-card:nth-child(1):hover { border-color: #2563EB; }
.feature-card:nth-child(2):hover { border-color: #7C3AED; }
.feature-card:nth-child(3):hover { border-color: #059669; }
.feature-card:nth-child(4):hover { border-color: #DC2626; }
.feature-card:nth-child(5):hover { border-color: #D97706; }
.feature-card:nth-child(6):hover { border-color: #0D9488; }
.feature-card:nth-child(7):hover { border-color: #DB2777; }
.feature-card:nth-child(8):hover { border-color: #4F46E5; }

/* 顶部装饰条颜色 */
.feature-card:nth-child(1)::before { background: linear-gradient(90deg, #2563EB, #3B82F6); }
.feature-card:nth-child(2)::before { background: linear-gradient(90deg, #7C3AED, #8B5CF6); }
.feature-card:nth-child(3)::before { background: linear-gradient(90deg, #059669, #10B981); }
.feature-card:nth-child(4)::before { background: linear-gradient(90deg, #DC2626, #EF4444); }
.feature-card:nth-child(5)::before { background: linear-gradient(90deg, #D97706, #F59E0B); }
.feature-card:nth-child(6)::before { background: linear-gradient(90deg, #0D9488, #14B8A6); }
.feature-card:nth-child(7)::before { background: linear-gradient(90deg, #DB2777, #EC4899); }
.feature-card:nth-child(8)::before { background: linear-gradient(90deg, #4F46E5, #6366F1); }

/* ===== 解决方案 Tabs ===== */
/* 行业解决方案 - 精致专业版 */
#solutions {
  background: #F8FAFC;
}

.solutions-tabs {
  display: flex;
  justify-content: center;
  gap: 4px;
  margin-bottom: 24px;
  flex-wrap: wrap;
  padding: 4px;
  background: #F1F5F9;
  border-radius: 10px;
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
}

.solution-tab {
  padding: 10px 18px;
  border: none;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  color: #64748B;
  background: transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 6px;
}

.solution-tab i {
  font-size: 15px;
  transition: all 0.2s ease;
}

.solution-tab:hover {
  color: #334155;
}

.solution-tab.active {
  background: #fff;
  color: #0F172A;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

.solution-content {
  display: none;
  background: #fff;
  border: 1px solid #E2E8F0;
  border-radius: 12px;
  overflow: hidden;
}

.solution-content.active {
  display: grid;
  grid-template-columns: 1fr 1fr;
  animation: solutionFadeIn 0.35s ease;
}

@keyframes solutionFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.solution-text {
  padding: 32px;
}

.solution-text h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: #0F172A;
}

.solution-text p {
  font-size: 13px;
  color: #64748B;
  margin-bottom: 20px;
  line-height: 1.65;
}

.solution-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.solution-feature {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 500;
  color: #334155;
  padding: 10px 12px;
  background: #F8FAFC;
  border-radius: 8px;
  transition: background 0.15s ease;
}

.solution-feature:hover {
  background: #F1F5F9;
}

.solution-feature i {
  width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #10B981;
  color: #fff;
  font-size: 9px;
  border-radius: 50%;
  flex-shrink: 0;
}

.solution-image {
  background: #F8FAFC;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.solution-mockup {
  width: 100%;
  background: white;
  border-radius: 10px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  overflow: hidden;
}

/* 解决方案徽章 */
.solution-badge {
  display: inline-block;
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 600;
  border-radius: 5px;
  margin-bottom: 10px;
}

/* 解决方案数据统计 */
.solution-stats {
  display: flex;
  gap: 20px;
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid #F1F5F9;
}

.solution-stat {
  text-align: left;
}

.solution-stat .stat-value {
  display: block;
  font-size: 20px;
  font-weight: 800;
  color: #0F172A;
  line-height: 1.2;
}

.solution-stat .stat-label {
  display: block;
  font-size: 11px;
  color: #94A3B8;
  margin-top: 2px;
}

/* 解决方案 Mockup 样式 */
.solution-mockup .mockup-header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  background: #F8FAFC;
  border-bottom: 1px solid #E2E8F0;
}

.solution-mockup .mockup-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.solution-mockup .mockup-dot:first-child { background: #FF5F57; }
.solution-mockup .mockup-dot:nth-child(2) { background: #FEBC2E; }
.solution-mockup .mockup-dot:nth-child(3) { background: #28C840; }

.solution-mockup .mockup-title {
  margin-left: auto;
  font-size: 11px;
  font-weight: 600;
  color: #94A3B8;
}

.solution-mockup .mockup-body {
  padding: 16px;
}

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

.mockup-stat-card {
  background: #F8FAFC;
  padding: 12px;
  border-radius: 8px;
  text-align: center;
}

.mockup-stat-value {
  font-size: 18px;
  font-weight: 700;
}

.mockup-stat-label {
  font-size: 10px;
  color: #94A3B8;
  margin-top: 2px;
}

/* ===== 对比表 ===== */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  background: white;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.comparison-table th,
.comparison-table td {
  padding: 22px 26px;
  text-align: left;
  border-bottom: 1px solid var(--gray-100);
}

.comparison-table th {
  background: var(--gray-50);
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-500);
}

.comparison-table th:first-child {
  width: 28%;
}

.comparison-table td {
  font-size: 14px;
}

.comparison-table td:first-child {
  font-weight: 600;
  color: var(--gray-900);
}

.comparison-highlight {
  background: linear-gradient(135deg, #EEF2FF 0%, #E8EDFF 100%);
}

.comparison-highlight th,
.comparison-highlight td {
  color: var(--brand-primary);
}

.check-yes {
  color: var(--success);
  font-size: 22px;
}

.check-no {
  color: var(--gray-300);
  font-size: 22px;
}

/* ===== 客户证言 - 精致版 ===== */
.testimonials-section {
  background: #F8FAFC;
}

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

.testimonial-card {
  background: white;
  padding: 24px;
  border-radius: 12px;
  border: 1px solid #E2E8F0;
  transition: all 0.2s ease;
}

.testimonial-card:hover {
  border-color: var(--brand-primary);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.1);
}

.testimonial-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.testimonial-avatar {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: linear-gradient(135deg, #4F46E5 0%, #7C3AED 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.testimonial-avatar span {
  color: white;
  font-weight: 700;
  font-size: 14px;
}

.testimonial-info {
  flex: 1;
  min-width: 0;
}

.testimonial-info h4 {
  font-size: 13px;
  font-weight: 700;
  color: #0F172A;
  margin-bottom: 2px;
}

.testimonial-info p {
  font-size: 11px;
  color: #94A3B8;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.testimonial-badge {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px 8px;
  background: #FEF3C7;
  color: #92400E;
  border-radius: 5px;
  font-size: 10px;
  font-weight: 600;
  flex-shrink: 0;
}

.testimonial-badge i {
  font-size: 12px;
}

.testimonial-badge-green {
  background: #D1FAE5;
  color: #065F46;
}

.testimonial-badge-blue {
  background: #DBEAFE;
  color: #1E40AF;
}

.testimonial-quote {
  font-size: 13px;
  line-height: 1.7;
  color: #334155;
  margin-bottom: 14px;
}

.testimonial-stars {
  display: flex;
  gap: 2px;
}

.testimonial-stars i {
  font-size: 12px;
  color: #FBBF24;
}

/* ===== 定价 ===== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 1080px;
  margin: 0 auto;
}

.pricing-grid-4 {
  grid-template-columns: repeat(4, 1fr);
  max-width: 1200px;
}

.popular-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 14px;
  background: var(--brand-gradient);
  color: white;
  font-size: 12px;
  font-weight: 700;
  border-radius: 50px;
  white-space: nowrap;
  box-shadow: 0 4px 12px rgba(67, 56, 202, 0.35);
}

/* ===== 首页精致定价卡片 ===== */
.pricing-cards-home {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.price-card-home {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 20px;
  padding: 28px 24px;
  text-align: center;
  position: relative;
  transition: all 0.3s ease;
}

.price-card-home:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
}

.price-card-home.featured {
  border: 2px solid var(--brand-primary);
  background: linear-gradient(180deg, #FAFBFF 0%, #FFFFFF 100%);
  box-shadow: 0 8px 32px rgba(67, 56, 202, 0.12);
}

.price-card-home.featured:hover {
  box-shadow: 0 16px 48px rgba(67, 56, 202, 0.18);
}

.price-card-home.dark {
  background: linear-gradient(180deg, #1E293B 0%, #0F172A 100%);
  border-color: #334155;
}

.price-card-home.dark:hover {
  box-shadow: 0 12px 40px rgba(15, 23, 42, 0.3);
}

.price-card-home.dark .price-card-name,
.price-card-home.dark .price-amount {
  color: white;
}

.price-card-home.dark .price-card-desc,
.price-card-home.dark .price-period {
  color: #94A3B8;
}

.price-card-home.dark .price-card-features li {
  color: #CBD5E1;
}

.price-card-home.dark .price-card-features i {
  color: #10B981;
}

.featured-tag {
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 12px;
  background: var(--brand-gradient);
  color: white;
  font-size: 11px;
  font-weight: 700;
  border-radius: 50px;
  letter-spacing: 0.02em;
  box-shadow: 0 4px 12px rgba(67, 56, 202, 0.35);
}

.price-card-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.price-card-icon i {
  font-size: 22px;
}

.price-card-name {
  font-size: 17px;
  font-weight: 800;
  color: var(--gray-900);
  margin: 0 0 4px;
}

.price-card-desc {
  font-size: 12px;
  color: var(--gray-500);
  margin: 0 0 16px;
}

.price-card-price {
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--gray-100);
}

.price-card-home.dark .price-card-price {
  border-color: #334155;
}

.price-amount {
  display: block;
  font-size: 32px;
  font-weight: 800;
  color: var(--gray-900);
  line-height: 1.1;
}

.price-period {
  display: block;
  font-size: 12px;
  color: var(--gray-500);
  margin-top: 4px;
}

.price-card-features {
  list-style: none;
  padding: 0;
  margin: 0 0 20px;
  text-align: left;
}

.price-card-features li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--gray-600);
  padding: 6px 0;
}

.price-card-features li strong {
  color: var(--gray-900);
  font-weight: 700;
}

.price-card-home.dark .price-card-features li strong {
  color: white;
}

.price-card-features i {
  font-size: 16px;
  color: var(--brand-primary);
  flex-shrink: 0;
}

.price-card-btn {
  display: block;
  width: 100%;
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  text-align: center;
  transition: all 0.2s ease;
}

.price-card-btn.secondary {
  background: var(--gray-100);
  color: var(--gray-700);
}

.price-card-btn.secondary:hover {
  background: var(--gray-200);
}

.price-card-home.dark .price-card-btn.secondary {
  background: #334155;
  color: white;
}

.price-card-home.dark .price-card-btn.secondary:hover {
  background: #475569;
}

.price-card-btn.primary {
  background: var(--brand-primary);
  color: white;
}

.price-card-btn.primary:hover {
  background: var(--brand-primary-dark);
}

.price-card-btn.gradient {
  background: var(--brand-gradient);
  color: white;
  box-shadow: 0 4px 12px rgba(67, 56, 202, 0.25);
}

.price-card-btn.gradient:hover {
  box-shadow: 0 6px 20px rgba(67, 56, 202, 0.35);
  transform: translateY(-1px);
}

/* 响应式 */
@media (max-width: 1100px) {
  .pricing-cards-home {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
}

@media (max-width: 640px) {
  .pricing-cards-home {
    grid-template-columns: 1fr;
    max-width: 340px;
  }
}

.pricing-card {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-2xl);
  padding: 48px 40px;
  text-align: center;
  transition: all 0.4s var(--ease-out);
  position: relative;
  overflow: hidden;
}

.pricing-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gray-200);
  transition: background 0.3s;
}

.pricing-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: transparent;
}

.pricing-card:hover::before {
  background: var(--brand-gradient);
}

.pricing-card.popular {
  border: 2px solid var(--brand-primary);
  box-shadow: var(--shadow-2xl), var(--shadow-glow-strong);
  transform: scale(1.05);
  z-index: 1;
}

.pricing-card.popular::before {
  height: 6px;
  background: var(--brand-gradient);
}

.pricing-card.popular:hover {
  transform: scale(1.05) translateY(-8px);
}

.pricing-card.popular::after {
  content: '🔥 最受欢迎';
  position: absolute;
  top: 20px;
  right: -32px;
  padding: 8px 40px;
  background: var(--brand-gradient);
  color: white;
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  transform: rotate(45deg);
  box-shadow: 0 2px 10px rgba(67, 56, 202, 0.35);
}

.pricing-name {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.pricing-desc {
  font-size: 14px;
  color: var(--gray-500);
  margin-bottom: 32px;
}

.pricing-price {
  margin-bottom: 32px;
  padding: 20px 0;
  border-radius: var(--radius-lg);
  background: var(--gray-50);
}

.pricing-card.popular .pricing-price {
  background: var(--brand-primary-light);
}

.pricing-amount {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--gray-900);
  letter-spacing: -0.04em;
  line-height: 1;
}

.pricing-card.popular .pricing-amount {
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.pricing-period {
  font-size: 14px;
  color: var(--gray-500);
  margin-top: 8px;
  display: block;
}

.pricing-features {
  text-align: left;
  margin-bottom: 36px;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 0;
  font-size: 14px;
  color: var(--gray-600);
  border-bottom: 1px solid var(--gray-100);
}

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

.pricing-features i {
  color: var(--success);
  font-size: 20px;
  background: var(--success-light);
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

/* ===== Why Choose Us ===== */
/* Why Us 区域 - 扁平版 */
.why-us-section {
  background: #fff;
}

/* 顶部特性条 */
.why-us-features {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0;
  margin-bottom: 28px;
}

.why-feature {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 24px;
  font-size: 13px;
  font-weight: 500;
  color: #334155;
}

.why-feature i {
  font-size: 16px;
  color: var(--brand-primary);
}

.why-feature-divider {
  width: 1px;
  height: 16px;
  background: #E2E8F0;
}

/* 卡片网格 */
.why-us-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.why-us-card {
  background: white;
  border: 1px solid #E2E8F0;
  border-radius: 12px;
  padding: 24px;
  transition: all 0.2s ease;
}

.why-us-card:hover {
  border-color: var(--brand-primary);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.1);
}

.why-us-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #F1F5F9;
  border-radius: 8px;
  font-size: 16px;
  color: #64748B;
  margin-bottom: 14px;
  transition: all 0.2s ease;
}

.why-us-card:hover .why-us-icon {
  background: var(--brand-primary);
  color: #fff;
}

.why-us-card h3 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: #0F172A;
}

.why-us-card > p {
  font-size: 12px;
  color: #64748B;
  line-height: 1.6;
  margin-bottom: 14px;
}

.why-us-quote {
  padding: 12px;
  background: #F8FAFC;
  border-radius: 8px;
  border-left: 2px solid var(--brand-primary);
}

.why-us-quote span {
  display: block;
  font-size: 12px;
  color: #334155;
  font-style: italic;
  line-height: 1.5;
}

.why-us-quote small {
  display: block;
  font-size: 10px;
  color: #94A3B8;
  margin-top: 6px;
  font-style: normal;
}

@media (max-width: 1024px) {
  .why-us-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .why-us-features {
    flex-wrap: wrap;
    gap: 12px;
  }
  
  .why-feature-divider {
    display: none;
  }
  
  .why-feature {
    padding: 8px 16px;
    background: #F8FAFC;
    border-radius: 6px;
  }
}

@media (max-width: 768px) {
  .why-us-grid {
    grid-template-columns: 1fr;
  }
  
  .why-us-card {
    padding: 20px;
  }
}

/* ===== FAQ ===== */
.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  max-width: 960px;
  margin: 0 auto;
}

.faq-item {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: 32px;
  transition: all 0.35s var(--ease-out);
  position: relative;
  overflow: hidden;
}

.faq-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 0;
  background: var(--brand-gradient);
  transition: height 0.35s var(--ease-out);
}

.faq-item:hover {
  border-color: transparent;
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.faq-item:hover::before {
  height: 100%;
}

.faq-question {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 16px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.faq-question::before {
  content: 'Q';
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--brand-gradient);
  color: white;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 800;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(67, 56, 202, 0.25);
}

.faq-answer {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.8;
  padding-left: 42px;
}

/* ===== CTA ===== */
.cta-section {
  padding: 64px 0;
  background: white;
}

.cta-box {
  background: linear-gradient(135deg, var(--gray-900) 0%, #1a1f35 50%, #0f172a 100%);
  border-radius: var(--radius-2xl);
  padding: 100px 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-box::before {
  content: '';
  position: absolute;
  top: -100%;
  left: -100%;
  width: 400%;
  height: 400%;
  background: 
    radial-gradient(ellipse 30% 40% at 70% 30%, rgba(67, 56, 202, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse 40% 30% at 30% 70%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
  animation: ctaFloat 20s linear infinite;
}

.cta-box::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 80%, rgba(99, 102, 241, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.08) 0%, transparent 40%);
  pointer-events: none;
}

@keyframes ctaFloat {
  from { transform: translate(0, 0) rotate(0deg); }
  to { transform: translate(-25%, -25%) rotate(360deg); }
}

.cta-content {
  position: relative;
  z-index: 1;
}

.cta-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  color: white;
  margin-bottom: 20px;
  letter-spacing: -0.035em;
  line-height: 1.15;
}

.cta-desc {
  font-size: 1.2rem;
  color: var(--gray-400);
  max-width: 520px;
  margin: 0 auto 48px;
  line-height: 1.75;
}

.cta-buttons {
  display: flex;
  gap: 18px;
  justify-content: center;
  flex-wrap: wrap;
}

.cta-buttons .btn-secondary {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  color: white;
  backdrop-filter: blur(10px);
}

.cta-buttons .btn-secondary:hover {
  background: rgba(255,255,255,0.15);
  border-color: rgba(255,255,255,0.25);
  transform: translateY(-2px);
}

/* ===== Footer - 简洁大气版 ===== */
.footer {
  background: #FAFBFC;
  position: relative;
}

/* 顶部分隔线 */
.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 1200px;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--gray-200) 20%, var(--gray-200) 80%, transparent 100%);
}

.footer-inner {
  position: relative;
  z-index: 1;
  padding: 64px 0 48px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(4, 1fr);
  gap: 48px;
}

/* ===== 品牌区域 ===== */
.footer-brand {
  padding-right: 24px;
}

.footer-brand .logo {
  display: inline-flex;
  margin-bottom: 16px;
}

.footer-brand > p {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.8;
  margin-bottom: 0;
  max-width: 280px;
}

/* 认证徽章 - 简洁版 */
.footer-badges {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 24px;
}

.footer-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--gray-500);
  transition: color 0.2s ease;
}

.footer-badge i {
  font-size: 14px;
  color: var(--brand-primary);
  opacity: 0.7;
}

.footer-badge:hover {
  color: var(--brand-primary);
}

.footer-badge:hover i {
  opacity: 1;
}

/* ===== 导航列 ===== */
.footer-col h4 {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

.footer-col a {
  display: block;
  font-size: 14px;
  color: var(--gray-500);
  padding: 6px 0;
  transition: color 0.2s ease;
}

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

/* ===== 联系区域 - 简洁版 ===== */
.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0;
  transition: opacity 0.2s ease;
}

.footer-contact-item:hover {
  opacity: 0.8;
}

.footer-contact-icon {
  width: 32px;
  height: 32px;
  background: var(--brand-primary-light);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-primary);
  font-size: 15px;
  flex-shrink: 0;
  transition: all 0.2s ease;
}

.footer-contact-icon.wechat {
  background: rgba(7, 193, 96, 0.1);
  color: #07C160;
}

.footer-contact-text span {
  display: block;
  font-size: 11px;
  color: var(--gray-400);
  margin-bottom: 2px;
}

.footer-contact-text a,
.footer-contact-text p {
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-700);
  margin: 0;
  transition: color 0.2s ease;
}

.footer-contact-text a:hover {
  color: var(--brand-primary);
}


/* ===== 底部版权区 - 简洁版 ===== */
.footer-bottom {
  background: transparent;
  border-top: 1px solid var(--gray-200);
  padding: 24px 0;
}

.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--gray-400);
  margin: 0;
}

.footer-bottom-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-bottom-links a {
  font-size: 13px;
  color: var(--gray-400);
  transition: color 0.2s ease;
}

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

.footer-bottom-links .separator {
  color: var(--gray-300);
  font-size: 10px;
}

/* ===== 回到顶部 - 简洁版 ===== */
.back-to-top {
  position: fixed;
  bottom: 80px;
  right: 24px;
  width: 44px;
  height: 44px;
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-500);
  font-size: 20px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: all 0.3s ease;
  z-index: 998;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  color: var(--brand-primary);
  border-color: var(--brand-primary);
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(67, 56, 202, 0.15);
}

/* 旧版兼容 */
.footer-links {
  display: flex;
  gap: 32px;
}

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

/* ===== 子页面公共样式 ===== */

/* 页面 Hero 区域 */
.page-hero-simple {
  padding: 140px 0 48px;
  background: #FAFBFC;
  text-align: center;
}

.page-hero-simple h1 {
  font-size: 36px;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 8px;
}

.page-hero-simple .subtitle {
  font-size: 14px;
  color: var(--gray-400);
}

.page-hero-simple .desc {
  font-size: 18px;
  color: var(--gray-500);
  margin-top: 12px;
}

/* 法律页面通用样式 */
.legal-content {
  padding: 48px 0 100px;
  max-width: 720px;
  margin: 0 auto;
}

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

.legal-section:last-child {
  margin-bottom: 0;
}

.legal-section h2 {
  font-size: 18px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.legal-section h2 .num {
  width: 28px;
  height: 28px;
  background: var(--brand-primary-light);
  color: var(--brand-primary);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  flex-shrink: 0;
}

.legal-section p {
  font-size: 15px;
  color: var(--gray-600);
  line-height: 1.8;
}

.legal-section ul {
  padding-left: 20px;
  margin-top: 12px;
}

.legal-section li {
  font-size: 15px;
  color: var(--gray-600);
  line-height: 1.8;
  margin-bottom: 6px;
}

.legal-section li strong {
  color: var(--gray-700);
}

.legal-notice {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  background: linear-gradient(135deg, #EEF2FF 0%, #E0E7FF 100%);
  border-radius: 12px;
  margin-bottom: 40px;
}

.legal-notice i {
  font-size: 20px;
  color: var(--brand-primary);
}

.legal-notice p {
  margin: 0;
  font-size: 14px;
  color: var(--brand-primary);
  font-weight: 500;
}

.legal-contact {
  margin-top: 48px;
  padding: 24px;
  background: var(--gray-50);
  border-radius: 12px;
}

.legal-contact p {
  margin: 0;
  font-size: 14px;
  color: var(--gray-600);
}

.legal-contact a {
  color: var(--brand-primary);
  font-weight: 600;
}

/* 更新日志样式 */
.changelog-content {
  padding: 60px 0 100px;
  max-width: 720px;
  margin: 0 auto;
}

.version-item {
  position: relative;
  padding-left: 32px;
  padding-bottom: 48px;
  border-left: 2px solid var(--gray-200);
}

.version-item:last-child {
  border-left-color: transparent;
  padding-bottom: 0;
}

.version-item::before {
  content: '';
  position: absolute;
  left: -6px;
  top: 0;
  width: 10px;
  height: 10px;
  background: var(--brand-primary);
  border-radius: 50%;
  border: 2px solid white;
  box-shadow: 0 0 0 2px var(--brand-primary);
}

.version-item.latest::before {
  width: 12px;
  height: 12px;
  left: -7px;
  background: #16A34A;
  box-shadow: 0 0 0 2px #16A34A;
}

.version-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.version-tag {
  padding: 6px 14px;
  background: var(--gray-100);
  color: var(--gray-700);
  border-radius: 6px;
  font-size: 14px;
  font-weight: 700;
  font-family: var(--font-mono);
}

.version-tag.latest {
  background: var(--brand-gradient);
  color: white;
}

.version-date {
  font-size: 14px;
  color: var(--gray-400);
}

.version-badge {
  padding: 4px 10px;
  background: #DCFCE7;
  color: #16A34A;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
}

.version-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 20px;
}

.change-group {
  margin-bottom: 20px;
}

.change-group:last-child {
  margin-bottom: 0;
}

.change-type {
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.change-type.new { color: #16A34A; }
.change-type.improved { color: #2563EB; }
.change-type.fixed { color: #DC2626; }

.change-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.change-list li {
  padding: 6px 0;
  padding-left: 16px;
  position: relative;
  font-size: 14px;
  color: var(--gray-600);
  line-height: 1.6;
}

.change-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 13px;
  width: 4px;
  height: 4px;
  background: var(--gray-300);
  border-radius: 50%;
}

/* 安全页面样式 */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 800px;
  margin: 48px auto 0;
}

.cert-item {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 16px;
  padding: 28px 20px;
  text-align: center;
  transition: all 0.2s ease;
}

.cert-item:hover {
  border-color: var(--brand-primary);
  box-shadow: 0 8px 24px rgba(67, 56, 202, 0.08);
}

.cert-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px;
}

.cert-icon i {
  font-size: 24px;
}

.cert-item h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 4px;
}

.cert-item p {
  font-size: 13px;
  color: var(--gray-500);
  margin: 0;
}

.security-features {
  padding: 80px 0;
  background: #FAFBFC;
}

.section-title {
  font-size: 28px;
  font-weight: 800;
  color: var(--gray-900);
  text-align: center;
  margin-bottom: 48px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}

.feature-card {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 16px;
  padding: 28px;
}

.feature-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-icon i {
  font-size: 20px;
  color: white;
}

.feature-header h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--gray-900);
  margin: 0;
}

.feature-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 0;
  font-size: 14px;
  color: var(--gray-600);
  border-bottom: 1px solid var(--gray-100);
}

.feature-list li:last-child {
  border-bottom: none;
}

.feature-list li i {
  color: #16A34A;
  font-size: 16px;
}

.compliance-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 800px;
  margin: 0 auto;
}

.compliance-item {
  padding: 24px;
  background: var(--gray-50);
  border-radius: 12px;
  text-align: center;
}

.compliance-item h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 6px;
}

.compliance-item p {
  font-size: 13px;
  color: var(--gray-500);
  margin: 0;
}

.page-cta {
  padding: 60px 0;
  background: linear-gradient(135deg, #F8FAFC 0%, #EEF2FF 100%);
  text-align: center;
}

.page-cta h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 12px;
}

.page-cta p {
  color: var(--gray-600);
  margin-bottom: 24px;
}

/* 响应式 - 子页面 */
@media (max-width: 768px) {
  .cert-grid,
  .compliance-grid {
    grid-template-columns: 1fr;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .page-hero-simple h1 {
    font-size: 28px;
  }
}

/* ===== Chat Widget ===== */
.chat-widget {
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 999;
}

.chat-btn {
  width: 64px;
  height: 64px;
  background: var(--brand-gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 26px;
  box-shadow: 
    0 6px 20px rgba(67, 56, 202, 0.4),
    0 2px 8px rgba(67, 56, 202, 0.2);
  cursor: pointer;
  transition: all 0.4s var(--ease-out);
  position: relative;
}

.chat-btn::before {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: var(--brand-gradient);
  animation: chatPulse 2s ease-out infinite;
  z-index: -1;
}

@keyframes chatPulse {
  0% { transform: scale(1); opacity: 0.6; }
  100% { transform: scale(1.5); opacity: 0; }
}

.chat-btn:hover {
  transform: scale(1.1) rotate(-5deg);
  box-shadow: 
    0 10px 30px rgba(67, 56, 202, 0.5),
    0 4px 12px rgba(67, 56, 202, 0.3);
}

.chat-tooltip {
  position: absolute;
  right: 80px;
  top: 50%;
  transform: translateY(-50%) translateX(10px);
  padding: 12px 20px;
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-700);
  white-space: nowrap;
  box-shadow: var(--shadow-xl);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s var(--ease-out);
}

.chat-tooltip::after {
  content: '';
  position: absolute;
  right: -8px;
  top: 50%;
  transform: translateY(-50%);
  border: 8px solid transparent;
  border-left-color: white;
}

.chat-widget:hover .chat-tooltip {
  opacity: 1;
  visibility: visible;
  transform: translateY(-50%) translateX(0);
}

/* ===== Modal ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s var(--ease-smooth);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: white;
  border-radius: var(--radius-2xl);
  padding: 48px;
  max-width: 480px;
  width: 92%;
  max-height: 92vh;
  overflow-y: auto;
  transform: scale(0.9) translateY(20px);
  transition: all 0.4s var(--ease-out);
  box-shadow: var(--shadow-2xl);
  border: 1px solid rgba(255,255,255,0.1);
}

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

.modal-header {
  text-align: center;
  margin-bottom: 40px;
}

.modal-header h2 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.modal-header p {
  color: var(--gray-500);
  font-size: 14px;
}

.form-group {
  margin-bottom: 24px;
}

.form-label {
  display: block;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  color: var(--gray-700);
  margin-bottom: 10px;
}

.form-input {
  width: 100%;
  padding: 14px 18px;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-md);
  font-size: 15px;
  transition: all 0.3s var(--ease-out);
  background: var(--gray-50);
}

.form-input:focus {
  outline: none;
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 4px rgba(67, 56, 202, 0.1);
  background: white;
}

.form-input::placeholder {
  color: var(--gray-400);
}

/* ===== Demo Form Enhanced Styles ===== */
/* 模态框关闭按钮 */
.modal-close-btn {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gray-100);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  color: var(--gray-500);
  transition: all 0.2s ease;
  z-index: 10;
}

.modal-close-btn:hover {
  background: var(--gray-200);
  color: var(--gray-700);
  transform: rotate(90deg);
}

/* 模态框图标 */
.modal-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-secondary) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: white;
  box-shadow: 0 8px 24px rgba(67, 56, 202, 0.25);
}

/* 表单标签图标 */
.form-label i {
  margin-right: 6px;
  color: var(--brand-primary);
}

/* 必填标识 */
.form-label .required {
  color: #EF4444;
  font-weight: 400;
}

/* 表单提示文字 */
.form-hint {
  display: block;
  font-size: 12px;
  color: var(--gray-500);
  margin-top: 6px;
}

.form-hint.error {
  color: #EF4444;
}

/* 表单状态提示 */
.form-status {
  margin-top: 16px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.form-status.success {
  background: #ECFDF5;
  color: #059669;
  border: 1px solid #A7F3D0;
}

.form-status.error {
  background: #FEF2F2;
  color: #DC2626;
  border: 1px solid #FECACA;
}

.form-status i {
  font-size: 18px;
}

/* 加载动画 */
.btn-loading {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-loading i {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* 表单输入框增强 */
.form-input:invalid:not(:placeholder-shown) {
  border-color: #EF4444;
}

.form-input:valid:not(:placeholder-shown) {
  border-color: #10B981;
}

/* Select 下拉框样式优化 */
select.form-input {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748B' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
}

/* Modal 响应式优化 */
@media (max-width: 480px) {
  .modal {
    margin: 16px;
    padding: 24px;
    max-height: calc(100vh - 32px);
    overflow-y: auto;
  }
  
  .modal-icon {
    width: 56px;
    height: 56px;
    font-size: 24px;
  }
  
  .modal-header h2 {
    font-size: 1.3rem;
  }
  
  .form-group {
    margin-bottom: 18px;
  }
  
  .form-input {
    padding: 12px 14px;
    font-size: 16px; /* 防止iOS缩放 */
  }
}

/* ===== iframe Modal 样式 ===== */
/* iframe 弹窗容器 */
.modal.modal-iframe {
  width: 90%;
  max-width: 520px;
  height: 85vh;
  max-height: 700px;
  padding: 0;
  overflow: hidden;
  position: relative;
}

/* iframe 加载状态 */
.iframe-loading {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: white;
  border-radius: 16px;
  gap: 16px;
  color: var(--gray-500);
}

.iframe-loading .loading-spinner {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  color: var(--brand-primary);
}

.iframe-loading .loading-spinner i {
  animation: spin 1s linear infinite;
}

.iframe-loading p {
  font-size: 14px;
  margin: 0;
}

/* iframe 弹窗关闭按钮 */
.modal.modal-iframe .modal-close-btn {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.modal.modal-iframe .modal-close-btn:hover {
  background: white;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* iframe 响应式 */
@media (max-width: 600px) {
  .modal.modal-iframe {
    width: 95%;
    height: 90vh;
    max-height: none;
    margin: 16px;
  }
}

/* ===== Mobile Menu ===== */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: white;
  z-index: 2000;
  transform: translateX(100%);
  transition: transform 0.35s var(--ease-out);
}

.mobile-menu.active {
  transform: translateX(0);
}

.mobile-menu-inner {
  padding: 28px;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.mobile-menu-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 40px;
}

.mobile-menu-close {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  color: var(--gray-700);
  background: none;
  border: none;
  cursor: pointer;
  border-radius: var(--radius-md);
}

.mobile-menu-close:hover {
  background: var(--gray-100);
}

.mobile-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
}

.mobile-nav a {
  padding: 18px;
  font-size: 17px;
  font-weight: 600;
  color: var(--gray-700);
  border-radius: var(--radius-lg);
  transition: all 0.2s var(--ease-smooth);
}

.mobile-nav a:hover {
  background: var(--gray-50);
  color: var(--brand-primary);
}

.mobile-menu-actions {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding-top: 28px;
  border-top: 1px solid var(--gray-200);
}

/* ===== Scroll Animations ===== */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(40px);
  transition: 
    opacity 0.8s var(--ease-out),
    transform 0.8s var(--ease-out);
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 交错动画 - 为卡片添加依次出现效果 */
.features-grid .animate-on-scroll:nth-child(1) { transition-delay: 0s; }
.features-grid .animate-on-scroll:nth-child(2) { transition-delay: 0.05s; }
.features-grid .animate-on-scroll:nth-child(3) { transition-delay: 0.1s; }
.features-grid .animate-on-scroll:nth-child(4) { transition-delay: 0.15s; }
.features-grid .animate-on-scroll:nth-child(5) { transition-delay: 0.2s; }
.features-grid .animate-on-scroll:nth-child(6) { transition-delay: 0.25s; }
.features-grid .animate-on-scroll:nth-child(7) { transition-delay: 0.3s; }
.features-grid .animate-on-scroll:nth-child(8) { transition-delay: 0.35s; }

.testimonials-grid .animate-on-scroll:nth-child(1) { transition-delay: 0s; }
.testimonials-grid .animate-on-scroll:nth-child(2) { transition-delay: 0.15s; }
.testimonials-grid .animate-on-scroll:nth-child(3) { transition-delay: 0.3s; }

.why-us-grid .animate-on-scroll:nth-child(1) { transition-delay: 0s; }
.why-us-grid .animate-on-scroll:nth-child(2) { transition-delay: 0.1s; }
.why-us-grid .animate-on-scroll:nth-child(3) { transition-delay: 0.2s; }
.why-us-grid .animate-on-scroll:nth-child(4) { transition-delay: 0.3s; }

.faq-grid .animate-on-scroll:nth-child(1) { transition-delay: 0s; }
.faq-grid .animate-on-scroll:nth-child(2) { transition-delay: 0.08s; }
.faq-grid .animate-on-scroll:nth-child(3) { transition-delay: 0.16s; }
.faq-grid .animate-on-scroll:nth-child(4) { transition-delay: 0.24s; }
.faq-grid .animate-on-scroll:nth-child(5) { transition-delay: 0.32s; }
.faq-grid .animate-on-scroll:nth-child(6) { transition-delay: 0.4s; }

/* ===== Page Header ===== */
.page-header {
  padding: 150px 0 70px;
  background: var(--gray-50);
  border-bottom: 1px solid var(--gray-100);
  text-align: center;
}

.page-header h1 {
  font-size: 2.75rem;
  margin-bottom: 18px;
  letter-spacing: -0.03em;
}

.page-header p {
  font-size: 1.15rem;
  color: var(--gray-500);
  max-width: 560px;
  margin: 0 auto;
}

/* Breadcrumb */
.breadcrumb {
  padding: 18px 0;
  font-size: 13px;
  color: var(--gray-500);
}

.breadcrumb a {
  color: var(--gray-500);
}

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

.breadcrumb span {
  margin: 0 10px;
}

/* ===== Responsive ===== */
@media (max-width: 1200px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 1024px) {
  .nav-main { display: none; }
  .mobile-menu-btn { display: flex; }
  .testimonials-grid, .pricing-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid-4 { grid-template-columns: repeat(2, 1fr); }
  .pricing-card.popular { transform: none; }
  .pricing-card.popular:hover { transform: translateY(-4px); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px 24px; }
  .footer-brand { grid-column: span 2; padding-right: 0; }
  .footer-inner { padding: 48px 0 32px; }
  .solution-content { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 768px) {
  .hero-title { font-size: 2.25rem; }
  .hero-desc { font-size: 1.05rem; }
  .metrics-bar { flex-wrap: wrap; gap: 32px; }
  .metric-item { width: 45%; }
  .demo-content { flex-direction: column; height: auto; }
  .demo-sidebar { width: 100%; border-right: none; border-bottom: 1px solid var(--gray-200); }
  .demo-stats { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .testimonials-grid, .pricing-grid, .pricing-grid-4, .faq-grid { grid-template-columns: 1fr; }
  .solutions-tabs { flex-direction: column; align-items: center; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  .footer-brand { grid-column: span 2; }
  .footer-bottom-inner { flex-direction: column; text-align: center; gap: 12px; }
  .footer-badges { justify-content: flex-start; }
  .back-to-top { bottom: 70px; right: 16px; width: 40px; height: 40px; font-size: 18px; }
  .hero-cta, .cta-buttons { flex-direction: column; align-items: center; }
  .section-title { font-size: 1.5rem; }
  .cta-title { font-size: 1.75rem; }
  .section { padding: 48px 0; }
  .section-header { margin-bottom: 28px; }
  .comparison-table { display: block; overflow-x: auto; }
  
  .logos-stats { flex-direction: column; gap: 16px; }
  .logos-divider { width: 60px; height: 1px; }
}