/* ===========================================
   国贸通 × LinkedIn Sales Navigator
   styles_v2.css — 完整设计系统
   =========================================== */

/* ===== CSS变量 - 升级版 ===== */
:root {
  /* LinkedIn蓝系 - 主品牌色 */
  --primary-50: #EBF5FF;
  --primary-100: #D0E7FF;
  --primary-200: #A0C8FF;
  --primary-300: #71A6FF;
  --primary-400: #4D9FE9;
  --primary-500: #0A66C2;
  --primary-600: #004182;
  --primary-700: #003366;
  --primary-800: #002244;
  --primary-900: #001122;

  /* 兼容旧变量名 */
  --li-blue: #0A66C2;
  --li-blue-dark: #004182;
  --li-blue-light: #4D9FE9;

  /* 国贸通红 - 辅助色 */
  --accent-red: #E74C3C;
  --accent-red-dark: #C0392B;
  --accent-red-light: #FADBD8;

  /* 兼容旧变量名 */
  --gmt-red: #E74C3C;
  --gmt-red-dark: #C0392B;

  /* 中性色 */
  --black: #0F1B2D;
  --gray-900: #111827;
  --gray-800: #1F2937;
  --gray-700: #374151;
  --gray-600: #4B5563;
  --gray-500: #6B7280;
  --gray-400: #9CA3AF;
  --gray-300: #D1D5DB;
  --gray-200: #E5E7EB;
  --gray-100: #F3F4F6;
  --gray-50: #F9FAFB;
  --white: #FFFFFF;

  /* 语义色 */
  --success: #059669;
  --warning: #D97706;
  --danger: #DC2626;
  --info: #0284C7;

  /* 阴影系统 - 增强版 */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 10px 30px rgba(0,0,0,0.12);
  --shadow-xl: 0 20px 50px rgba(0,0,0,0.15);
  --shadow-blue: 0 4px 16px rgba(10, 102, 194, 0.25);

  /* 圆角 */
  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-2xl: 24px;

  /* 导航栏 */
  --navbar-h: 70px;
  --topbar-h: 44px;

  /* 动画 */
  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--gray-800);
  background: var(--white);
  line-height: 1.6;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; }
input, select, textarea { font-family: inherit; font-size: 1rem; }

/* ===== Layout - 升级版 ===== */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}
.container-narrow {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}
.container-wide {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 24px;
}
.section {
  padding: 100px 0;
}
.section-lg {
  padding: 120px 0;
}
.section-sm {
  padding: 60px 0;
}

/* ===== 顶部公告条 ===== */
.topbar {
  background: linear-gradient(90deg, #004182 0%, #0A66C2 100%);
  color: var(--white);
  font-size: 13.5px;
  position: relative;
  z-index: 1100;
}
.topbar-inner {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 24px;
  flex-wrap: wrap;
  justify-content: center;
}
.topbar-icon { font-size: 14px; }
.topbar-cta {
  background: rgba(255,255,255,0.2);
  border: 1px solid rgba(255,255,255,0.4);
  color: white;
  padding: 3px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
  transition: background var(--transition);
}
.topbar-cta:hover { background: rgba(255,255,255,0.35); }
.topbar-close {
  color: rgba(255,255,255,.7);
  font-size: 18px;
  line-height: 1;
  padding: 0 4px;
  margin-left: auto;
}
.topbar-close:hover { color: white; }

/* ===== 导航栏 - 升级版 ===== */
.navbar {
  position: fixed;
  top: var(--topbar-h);
  left: 0; right: 0;
  height: var(--navbar-h);
  background: rgba(255,255,255,0.95);
  border-bottom: 1px solid rgba(10, 102, 194, 0.08);
  z-index: 1000;
  transition: all var(--transition);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}
.navbar.scrolled {
  top: 0;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  border-bottom-color: rgba(10, 102, 194, 0.12);
  background: rgba(255,255,255,0.98);
}
.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-600);
  padding: 10px 16px;
  border-radius: 8px;
  transition: all var(--transition);
  position: relative;
}
.nav-link:hover {
  color: var(--primary-600);
  background: var(--primary-50);
}
.nav-link.nav-cta {
  background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
  color: var(--white) !important;
  font-weight: 600;
  padding: 10px 20px;
  box-shadow: var(--shadow-blue);
  position: relative;
  overflow: hidden;
}
.nav-link.nav-cta::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, transparent 100%);
  opacity: 0;
  transition: opacity var(--transition);
}
.nav-link.nav-cta:hover::before {
  opacity: 1;
}
.nav-link.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(10, 102, 194, 0.35);
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--gray-700);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ===== Logo 组合 ===== */
.logo-combo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.logo-gmt-img {
  height: 32px;
  width: auto;
  object-fit: contain;
}
.logo-combo-divider {
  font-size: 16px;
  font-weight: 300;
  color: var(--gray-400);
  line-height: 1;
}
.logo-linkedin-badge {
  display: flex;
  align-items: center;
  gap: 7px;
}
.logo-sn-text {
  font-size: 13px;
  font-weight: 700;
  color: var(--li-blue);
  letter-spacing: -0.01em;
  white-space: nowrap;
}
/* 页脚 */
.logo-combo--footer { margin-bottom: 16px; }
.logo-gmt-img--footer { height: 28px; filter: brightness(0) invert(1); }
.logo-sn-text--footer { color: var(--li-blue-light); }
.logo-combo--footer .logo-combo-divider { color: rgba(255,255,255,0.3); }

/* ===== 按钮 - 升级版 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 12px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn:active { transform: none !important; box-shadow: var(--shadow-sm); }
.btn:focus { outline: none; box-shadow: 0 0 0 3px rgba(10,102,194,0.25); }

/* 主按钮 - 渐变、阴影 */
.btn-primary {
  background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
  color: var(--white);
  border-color: var(--primary-600);
  box-shadow: var(--shadow-blue);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 100%);
  border-color: var(--primary-700);
  box-shadow: 0 8px 20px rgba(10, 102, 194, 0.4);
}
.btn-primary::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, transparent 100%);
  opacity: 0;
  transition: opacity var(--transition);
}
.btn-primary:hover::before {
  opacity: 1;
}

/* 次要按钮 - 简洁 */
.btn-secondary {
  background: var(--white);
  color: var(--primary-600);
  border-color: var(--primary-200);
}
.btn-secondary:hover {
  border-color: var(--primary-400);
  background: var(--primary-50);
  color: var(--primary-700);
}

/* 幽灵按钮 - Hero专用 */
.btn-ghost {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(4px);
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.6);
}
.btn-ghost-light {
  background: transparent;
  color: var(--gray-700);
  border-color: var(--gray-300);
}
.btn-ghost-light:hover {
  border-color: var(--primary-500);
  color: var(--primary-600);
  background: var(--primary-50);
}

/* 大按钮 */
.btn-lg {
  padding: 16px 36px;
  font-size: 16px;
  border-radius: 14px;
  box-sizing: border-box;
  width: auto;
  max-width: 100%;
}

.btn-lg:active {
  transform: none !important;
}

/* 小按钮 */
.btn-sm {
  padding: 10px 20px;
  font-size: 14px;
  border-radius: 10px;
}

/* 白色按钮 */
.btn-white {
  background: var(--white);
  color: var(--primary-600);
  font-weight: 700;
}

.btn-white:hover {
  background: var(--gray-50);
  color: var(--primary-700);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

/* 白色轮廓按钮 */
.btn-outline-white {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.6);
}

.btn-outline-white:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.8);
  color: var(--white);
  transform: translateY(-2px);
}

/* 全宽按钮 */
.btn-full {
  width: 100%;
  display: block;
  box-sizing: border-box;
}

/* 确保按钮在active状态不会变大 */
.btn-full:active {
  width: 100% !important;
  transform: none !important;
}

/* 脉冲动画按钮 - 用于重要CTA */
@keyframes pulse-glow {
  0%, 100% {
    box-shadow: 0 4px 16px rgba(10, 102, 194, 0.3);
  }
  50% {
    box-shadow: 0 4px 24px rgba(10, 102, 194, 0.5);
  }
}
.btn-pulse {
  animation: pulse-glow 2s ease-in-out infinite;
}

/* ===== 动画关键帧 ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== Section Header - 升级版 ===== */
.section-header {
  text-align: center;
  margin-bottom: 64px;
}
.section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--primary-600);
  background: var(--primary-50);
  border: 1px solid var(--primary-100);
  padding: 6px 16px;
  border-radius: 24px;
  margin-bottom: 16px;
}
.section-title {
  font-size: clamp(32px, 4.5vw, 44px);
  font-weight: 800;
  color: var(--gray-900);
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}
.section-desc {
  font-size: 17px;
  color: var(--gray-600);
  max-width: 580px;
  margin: 0 auto;
}

/* ===== HERO - 升级版 ===== */
.hero {
  position: relative;
  padding-top: calc(var(--navbar-h) + var(--topbar-h) + 60px);
  padding-bottom: 100px;
  overflow: hidden;
  min-height: 700px;
  display: flex;
  align-items: center;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-gradient {
  position: absolute;
  inset: 0;
  /* 深色渐变背景 - 更大气专业 */
  background:
    linear-gradient(135deg,
      rgba(0, 21, 41, 0.95) 0%,
      rgba(0, 38, 77, 0.92) 30%,
      rgba(0, 65, 130, 0.88) 70%,
      rgba(10, 102, 194, 0.85) 100%
    ),
    radial-gradient(ellipse at top right, rgba(77, 159, 233, 0.15) 0%, transparent 60%),
    radial-gradient(ellipse at bottom left, rgba(10, 102, 194, 0.2) 0%, transparent 50%);
}
.hero-dots {
  position: absolute;
  inset: 0;
  /* 更细致的网格背景 */
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.6;
}
.hero-layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  align-items: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 100px;
  padding: 10px 18px;
  font-size: 13px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.95);
  margin-bottom: 28px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  animation: fadeInUp 0.6s ease-out;
}
.hero-badge svg {
  width: 18px;
  height: 18px;
}
.hero-title {
  font-size: clamp(38px, 5vw, 58px);
  font-weight: 800;
  line-height: 1.1;
  color: var(--white);
  margin-bottom: 24px;
  letter-spacing: -0.02em;
  animation: fadeInUp 0.6s ease-out 0.1s both;
}
.hero-highlight {
  /* 渐变高亮文字 */
  background: linear-gradient(135deg, #71A6FF 0%, #FFFFFF 50%, #A0C8FF 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  display: inline-block;
}
.hero-desc {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.75;
  margin-bottom: 36px;
  max-width: 540px;
  animation: fadeInUp 0.6s ease-out 0.2s both;
}
.hero-desc strong {
  color: var(--white);
  font-weight: 600;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
  animation: fadeInUp 0.6s ease-out 0.3s both;
}
.hero-stats {
  display: flex;
  align-items: center;
  gap: 48px;
  padding-top: 36px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  flex-wrap: wrap;
  animation: fadeInUp 0.6s ease-out 0.4s both;
}
.stat { text-align: center; }
.stat strong {
  display: block;
  font-family: var(--font-mono, 'SF Mono', 'Roboto Mono', monospace);
  font-size: 32px;
  font-weight: 800;
  color: var(--white);
  line-height: 1.1;
  letter-spacing: -0.02em;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}
.stat span {
  display: block;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 6px;
  font-weight: 500;
}
.stat-sep {
  width: 1px;
  height: 48px;
  background: rgba(255, 255, 255, 0.2);
  flex-shrink: 0;
}

/* UI Mockup */
.hero-visual {
  position: relative;
}
.ui-mockup {
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  border: 1px solid var(--gray-200);
}
.mockup-header {
  background: var(--gray-100);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--gray-200);
}
.mockup-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
}
.mockup-dot.r { background: #FF5F57; }
.mockup-dot.y { background: #FFBD2E; }
.mockup-dot.g { background: #28C840; }
.mockup-title {
  font-size: 11px;
  color: var(--gray-500);
  margin-left: 4px;
}
.mockup-body { padding: 16px; }
.search-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  padding: 9px 14px;
  font-size: 12px;
  color: var(--gray-500);
  margin-bottom: 12px;
}
.result-count {
  font-size: 12px;
  color: var(--gray-500);
  margin-bottom: 12px;
}
.result-count strong { color: var(--li-blue); }
.lead-list { display: flex; flex-direction: column; gap: 8px; }
.lead-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid var(--gray-100);
  transition: background var(--transition);
}
.lead-item:hover { background: var(--gray-50); }
.lead-avatar {
  width: 36px; height: 36px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 700;
  color: white; flex-shrink: 0;
}
.lead-info { flex: 1; min-width: 0; }
.lead-name { font-size: 12px; font-weight: 600; color: var(--gray-800); display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.lead-title { font-size: 11px; color: var(--gray-500); margin: 2px 0; }
.lead-meta { font-size: 10px; color: var(--gray-400); }
.intent-badge {
  font-size: 9px; font-weight: 700;
  background: #FEF3C7; color: #92400E;
  padding: 1px 6px; border-radius: 10px;
}
.conn-badge {
  font-size: 9px; font-weight: 700;
  background: #D1FAE5; color: #065F46;
  padding: 1px 6px; border-radius: 10px;
}
.lead-btn {
  font-size: 11px; font-weight: 600;
  background: var(--li-blue); color: white;
  padding: 4px 10px; border-radius: 6px;
  flex-shrink: 0;
}
/* AI浮窗 */
.ai-bubble {
  position: absolute;
  bottom: -16px; right: -16px;
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 14px 16px;
  display: flex;
  gap: 10px;
  box-shadow: var(--shadow-lg);
  max-width: 220px;
}
.ai-icon { font-size: 24px; flex-shrink: 0; }
.ai-text { font-size: 11px; color: var(--gray-600); line-height: 1.5; }
.ai-text strong { display: block; color: var(--gray-900); margin-bottom: 2px; }

/* ===== 信任元素 - 升级版 ===== */
.trust-section {
  background: var(--white);
  padding: 80px 0;
  border-bottom: 1px solid var(--gray-200);
}
.trust-header {
  text-align: center;
  margin-bottom: 48px;
}
.trust-label {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gray-500);
  margin-bottom: 12px;
}
.trust-text {
  font-size: 18px;
  color: var(--gray-900);
  font-weight: 600;
}
.trust-logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
  padding: 48px 0;
  margin-bottom: 48px;
}
.trust-logo {
  height: 40px;
  opacity: 0.5;
  filter: grayscale(100%);
  transition: all 0.3s ease;
  cursor: default;
}
.trust-logo:hover {
  opacity: 1;
  filter: grayscale(0%);
  transform: scale(1.05);
}
.trust-logo-svg {
  height: 100%;
  width: auto;
}
.trust-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 64px;
  padding-top: 48px;
  border-top: 1px solid var(--gray-200);
  flex-wrap: wrap;
}
.trust-stat-item {
  text-align: center;
}
.trust-stat-number {
  font-size: 48px;
  font-weight: 800;
  color: var(--primary-600);
  line-height: 1;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}
.trust-stat-label {
  font-size: 14px;
  color: var(--gray-600);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.trust-stat-separator {
  width: 1px;
  height: 60px;
  background: var(--gray-300);
  flex-shrink: 0;
}

/* ===== 合规提醒 - 升级版 ===== */
.compliance-banner {
  background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
  border-top: 1px solid var(--gray-200);
  border-bottom: 1px solid var(--gray-200);
  padding: 48px 0;
}
.compliance-grid {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}
.compliance-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  max-width: 380px;
}
.ci-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  margin-top: 2px;
  font-size: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}
.ci-icon.danger {
  background: linear-gradient(135deg, #FEF2F2 0%, #FEE2E2 100%);
  color: var(--danger);
}
.ci-icon.safe {
  background: linear-gradient(135deg, #ECFDF5 0%, #D1FAE5 100%);
  color: var(--success);
}
.compliance-item strong {
  display: block;
  font-size: 17px;
  margin-bottom: 6px;
  color: var(--gray-900);
}
.compliance-item p {
  font-size: 14px;
  color: var(--gray-600);
  line-height: 1.6;
}
.compliance-item p strong {
  display: inline;
  color: var(--gray-800);
  font-weight: 600;
}
.compliance-arrow {
  font-size: 32px;
  color: var(--gray-400);
  font-weight: 300;
}

/* ===== 产品功能 - 升级版 ===== */
.features-section { background: white; }
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 56px;
}
.feature-card {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: 32px 28px;
  transition: all var(--transition-slow);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-500), var(--primary-600));
  opacity: 0;
  transition: opacity var(--transition);
}
.feature-card:hover {
  border-color: var(--primary-300);
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
  background: white;
}
.feature-card:hover::before {
  opacity: 1;
}
.feature-card--primary {
  background: linear-gradient(135deg, var(--primary-50) 0%, var(--primary-100) 100%);
  border-color: rgba(10, 102, 194, 0.2);
}
.feature-card--primary::before {
  opacity: 1;
}
.fc-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: white;
  border-radius: 14px;
  color: var(--primary-600);
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}
.feature-card:hover .fc-icon {
  background: var(--primary-500);
  color: white;
  transform: scale(1.05);
}
.fc-tag {
  position: absolute;
  top: 24px; right: 24px;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--primary-600);
  background: rgba(10, 102, 194, 0.1);
  padding: 4px 10px;
  border-radius: 12px;
}
.feature-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.feature-card p {
  font-size: 14px;
  color: var(--gray-600);
  line-height: 1.65;
  margin-bottom: 14px;
}
.fc-list {
  list-style: none;
}
.fc-list li {
  font-size: 13px;
  color: var(--gray-600);
  padding: 3px 0 3px 18px;
  position: relative;
}
.fc-list li::before {
  content: '✓';
  position: absolute; left: 0;
  color: var(--success);
  font-weight: 700;
}
.tag-new {
  font-size: 10px; font-weight: 700;
  background: linear-gradient(90deg, #6366F1, #8B5CF6);
  color: white;
  padding: 2px 8px; border-radius: 10px;
  vertical-align: middle;
}
/* VS对比 */
.vs-banner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 32px;
  align-items: center;
  background: var(--gray-900);
  border-radius: var(--radius-xl);
  padding: 36px 40px;
  color: white;
}
.vs-col h4 { font-size: 16px; font-weight: 700; margin-bottom: 14px; }
.vs-col ul li {
  font-size: 14px;
  color: rgba(255,255,255,0.7);
  padding: 5px 0 5px 20px;
  position: relative;
}
.vs-col ul li::before { content: '✗'; position: absolute; left: 0; color: #EF4444; }
.vs-col--right ul li::before { content: '✓'; color: #10B981; }
.vs-col--right h4 { color: var(--li-blue-light); }
.vs-col--right ul li { color: rgba(255,255,255,0.85); }
.vs-middle {
  font-size: 28px;
  font-weight: 900;
  color: rgba(255,255,255,0.3);
  text-align: center;
}

/* ===== AI功能 ===== */
.ai-section { background: linear-gradient(135deg, #EBF3FF 0%, #F0F4FF 100%); }
.ai-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 48px;
}
.ai-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 28px;
  border: 1px solid var(--gray-200);
  transition: all var(--transition);
}
.ai-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.ai-card--featured {
  border-color: var(--li-blue-light);
  background: linear-gradient(145deg, #EBF3FF, white);
}
.ai-card-icon { font-size: 32px; margin-bottom: 14px; }
.ai-card h3 {
  font-size: 18px; font-weight: 700;
  margin-bottom: 10px;
  display: flex; align-items: center; gap: 10px;
}
.ai-card p { font-size: 14px; color: var(--gray-600); line-height: 1.65; margin-bottom: 16px; }
.ai-badge {
  font-size: 11px; font-weight: 600;
  color: var(--li-blue);
  background: rgba(10,102,194,0.08);
  padding: 3px 10px; border-radius: 10px;
  display: inline-block;
}
.tag-beta {
  font-size: 10px; font-weight: 700;
  background: #FEF3C7; color: #92400E;
  padding: 2px 8px; border-radius: 10px;
}
.ai-stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.ai-stat {
  background: white;
  padding: 24px;
  text-align: center;
}
.ai-stat strong {
  display: block;
  font-size: 28px; font-weight: 800;
  color: var(--li-blue);
  margin-bottom: 6px;
}
.ai-stat span { font-size: 13px; color: var(--gray-500); }

/* ===== 版本对比 ===== */
.versions-section { background: var(--gray-50); }
.ownership-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 48px;
}
.own-card {
  border-radius: var(--radius-lg);
  padding: 28px;
  border: 2px solid;
}
.own-card--warn { background: #FFF5F5; border-color: #FECACA; }
.own-card--good { background: #F0FDF4; border-color: #86EFAC; }
.own-header { margin-bottom: 20px; }
.own-emoji { font-size: 28px; display: block; margin-bottom: 8px; }
.own-header h3 { font-size: 18px; font-weight: 700; margin-bottom: 6px; }
.own-status {
  display: inline-block;
  font-size: 12px; font-weight: 600;
  background: #FEE2E2; color: #991B1B;
  padding: 3px 10px; border-radius: 10px;
}
.own-status--good { background: #D1FAE5; color: #065F46; }
.own-list li {
  font-size: 14px;
  color: var(--gray-700);
  padding: 6px 0 6px 22px;
  border-bottom: 1px solid rgba(0,0,0,0.04);
  position: relative;
}
.own-list li::before { position: absolute; left: 0; font-weight: 700; }
.own-list li.bad::before { content: '✗'; color: var(--danger); }
.own-list li.good::before { content: '✓'; color: var(--success); }

/* 对比表 */
.table-title { font-size: 18px; font-weight: 700; margin-bottom: 16px; color: var(--gray-800); }
.table-responsive { overflow-x: auto; }
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.comparison-table th, .comparison-table td {
  padding: 12px 16px;
  text-align: center;
  border-bottom: 1px solid var(--gray-100);
}
.comparison-table th:first-child,
.comparison-table td:first-child {
  text-align: left;
  font-weight: 500;
  color: var(--gray-700);
}
.comparison-table thead th {
  background: var(--gray-800);
  color: white;
  font-weight: 700;
  font-size: 13px;
}
.th-highlight { background: var(--li-blue) !important; }
.comparison-table .table-group {
  background: var(--gray-100);
  font-size: 12px;
  font-weight: 700;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.td-yes { color: var(--success); font-weight: 600; }
.td-no { color: var(--gray-400); }
.td-mid { color: var(--warning); }
.td-hl { background: rgba(10,102,194,0.04); }
.price-highlight {
  font-size: 15px;
  font-weight: 800;
  color: var(--li-blue);
}

/* ===== 解决方案 ===== */
.solutions-section { background: white; }
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.sol-card {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition);
  position: relative;
}
.sol-card:hover {
  border-color: var(--li-blue-light);
  box-shadow: var(--shadow-md);
}
.sol-number {
  font-size: 48px;
  font-weight: 900;
  color: rgba(10,102,194,0.08);
  line-height: 1;
  margin-bottom: 12px;
  font-variant-numeric: tabular-nums;
}
.sol-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 12px; }
.sol-card p { font-size: 14.5px; color: var(--gray-600); line-height: 1.7; margin-bottom: 16px; }
.sol-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.sol-tags span {
  font-size: 12px; font-weight: 500;
  background: rgba(10,102,194,0.07);
  color: var(--li-blue);
  padding: 3px 10px;
  border-radius: 10px;
}

/* ===== 全球覆盖 ===== */
.coverage-section { background: var(--gray-900); color: white; }
.coverage-section .section-tag { background: rgba(255,255,255,.1); color: rgba(255,255,255,.7); }
.coverage-section .section-title { color: white; }
.coverage-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(255,255,255,0.06);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 24px;
}
.cov-item {
  background: rgba(255,255,255,0.03);
  padding: 24px 20px;
  text-align: center;
  transition: background var(--transition);
}
.cov-item:hover { background: rgba(10,102,194,0.2); }
.cov-flag { font-size: 28px; margin-bottom: 8px; }
.cov-item h4 { font-size: 14px; font-weight: 600; margin-bottom: 6px; color: rgba(255,255,255,.7); }
.cov-num { font-size: 22px; font-weight: 800; color: var(--li-blue-light); margin-bottom: 4px; }
.cov-item span { font-size: 12px; color: rgba(255,255,255,.4); }
.coverage-note {
  text-align: center;
  font-size: 14px;
  color: rgba(255,255,255,.5);
}

/* ===== 客户案例 ===== */
.cases-section { background: var(--gray-50); }
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}
.case-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 28px;
  border: 1px solid var(--gray-200);
  transition: all var(--transition);
}
.case-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.case-industry {
  font-size: 12px;
  font-weight: 700;
  color: var(--li-blue);
  background: rgba(10,102,194,0.08);
  padding: 4px 12px;
  border-radius: 10px;
  display: inline-block;
  margin-bottom: 16px;
}
.case-card blockquote {
  font-size: 14.5px;
  color: var(--gray-700);
  line-height: 1.7;
  font-style: italic;
  margin-bottom: 20px;
  border-left: 3px solid var(--li-blue-light);
  padding-left: 14px;
}
.case-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--gray-100);
}
.case-stats div { text-align: center; }
.case-stats strong {
  display: block;
  font-size: 18px; font-weight: 800;
  color: var(--li-blue);
}
.case-stats span { font-size: 11px; color: var(--gray-500); }

/* Forrester */
.forrester-banner {
  background: linear-gradient(135deg, #004182 0%, #0A66C2 100%);
  border-radius: var(--radius-xl);
  padding: 36px 40px;
  color: white;
  text-align: center;
}
.forrester-logo {
  font-size: 12px; font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,.6);
  margin-bottom: 24px;
}
.forrester-stats {
  display: flex;
  justify-content: center;
  gap: 60px;
  margin-bottom: 16px;
}
.forrester-stats div { text-align: center; }
.forrester-stats strong {
  display: block;
  font-size: 40px; font-weight: 900;
  line-height: 1;
  margin-bottom: 6px;
}
.forrester-stats span { font-size: 14px; color: rgba(255,255,255,.7); }
.forrester-banner p { font-size: 12px; color: rgba(255,255,255,.5); }

/* ===== FAQ ===== */
.faq-section { background: white; }
.faq-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.faq-item {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 8px;
  transition: border-color var(--transition);
}
.faq-item[open] { border-color: var(--li-blue-light); }
.faq-item summary {
  font-size: 15px; font-weight: 600;
  color: var(--gray-800);
  padding: 16px 20px;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  user-select: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  font-size: 20px; font-weight: 300;
  color: var(--gray-400);
  flex-shrink: 0;
  transition: transform var(--transition);
}
.faq-item[open] summary::after { transform: rotate(45deg); color: var(--li-blue); }
.faq-item[open] summary { color: var(--li-blue); }
.faq-body {
  padding: 0 20px 16px;
  font-size: 14.5px;
  color: var(--gray-600);
  line-height: 1.7;
}
.faq-body p + p { margin-top: 10px; }
.faq-body ul, .faq-body ol { padding-left: 18px; margin-top: 8px; }
.faq-body li { margin-bottom: 4px; }
.faq-body strong { color: var(--gray-800); }

/* ===== 为什么选我们 ===== */
.why-section { background: var(--gray-50); }
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.why-item {
  background: white;
  border-radius: var(--radius-lg);
  padding: 28px;
  border: 1px solid var(--gray-200);
  transition: all var(--transition);
}
.why-item:hover { box-shadow: var(--shadow-md); border-color: var(--li-blue-light); transform: translateY(-3px); }
.why-icon { font-size: 32px; margin-bottom: 14px; }
.why-item h3 { font-size: 17px; font-weight: 700; margin-bottom: 10px; }
.why-item p { font-size: 14px; color: var(--gray-600); line-height: 1.65; }

/* ===== 联系 ===== */
.contact-section {
  background: linear-gradient(135deg, #EBF3FF 0%, #F5F9FF 100%);
}
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}
.contact-text h2 {
  font-size: clamp(28px, 3vw, 38px);
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 14px;
  line-height: 1.25;
}
.contact-text p {
  font-size: 16px;
  color: var(--gray-600);
  line-height: 1.7;
  margin-bottom: 24px;
}
.contact-features { margin-bottom: 28px; }
.cf-item {
  font-size: 14.5px;
  color: var(--gray-700);
  padding: 6px 0;
}
.contact-info {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.contact-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  background: linear-gradient(135deg, var(--li-blue-light) 0%, var(--li-blue) 100%);
  border-radius: var(--radius-lg);
  color: white;
  transition: transform var(--transition), box-shadow var(--transition);
}

.contact-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.contact-item i {
  font-size: 20px;
  flex-shrink: 0;
}

.contact-item strong {
  display: block;
  font-size: 13px;
  font-weight: 600;
  opacity: 0.95;
  margin-bottom: 4px;
}

.contact-item p {
  font-size: 15px;
  font-weight: 500;
  margin: 0;
}

.contact-hotline {
  background: linear-gradient(135deg, #FF6B6B 0%, #FF8E53 100%);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  color: white;
}

.hotline-icon {
  width: 48px;
  height: 48px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
}

.hotline-label {
  font-size: 12px;
  font-weight: 600;
  opacity: 0.9;
  margin: 0 0 4px 0;
}

.hotline-number {
  font-size: 22px;
  font-weight: 800;
  margin: 0 0 2px 0;
}

.hotline-time {
  font-size: 13px;
  font-weight: 500;
  opacity: 0.85;
  margin: 0;
}

/* 响应式调整 */
@media (max-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .contact-hotline {
    flex-direction: column;
    text-align: center;
  }
}
.ci-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14.5px;
  color: var(--gray-700);
  transition: color var(--transition);
}
.ci-item:hover { color: var(--li-blue); }
/* ===== 页脚 ===== */
.footer {
  background: var(--gray-900);
  color: rgba(255,255,255,.6);
  padding: 56px 0 28px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 56px;
  margin-bottom: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,.07);
}
.footer-brand p {
  font-size: 13.5px;
  line-height: 1.7;
  margin-bottom: 6px;
}
.footer-contact {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.footer-contact a {
  font-size: 13.5px;
  color: var(--li-blue-light);
  transition: color var(--transition);
}
.footer-contact a:hover { color: white; }
.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.fn-col h4 {
  font-size: 13px; font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,.9);
  margin-bottom: 16px;
}
.fn-col ul li + li { margin-top: 8px; }
.fn-col a {
  font-size: 13.5px;
  color: rgba(255,255,255,.5);
  transition: color var(--transition);
}
.fn-col a:hover { color: white; }
.footer-bottom {
  text-align: center;
  font-size: 12px;
  color: rgba(255,255,255,.25);
  line-height: 1.8;
}

/* Footer Grid */
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}

.footer-links-col h4 {
  font-size: 14px;
  font-weight: 700;
  color: rgba(255,255,255,.9);
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links-col a {
  display: block;
  color: rgba(255,255,255,.55);
  font-size: 14px;
  padding: 8px 0;
  transition: color var(--transition);
}

.footer-links-col a:hover {
  color: white;
}

.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  color: rgba(255,255,255,.55);
  font-size: 14px;
}

.footer-contact-item i {
  color: var(--li-blue-light);
  font-size: 16px;
  flex-shrink: 0;
}

.footer-contact-item:hover {
  color: white;
}

.footer-social {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}

.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 18px;
  transition: all var(--transition);
}

.footer-social a:hover {
  background: var(--li-blue);
  transform: translateY(-2px);
}

/* Footer responsive */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .footer-brand {
    grid-column: span 2;
  }
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer-brand {
    grid-column: span 1;
  }
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .ai-grid { grid-template-columns: repeat(2, 1fr); }
  .ai-stats-row { grid-template-columns: repeat(2, 1fr); }
  .coverage-grid { grid-template-columns: repeat(4, 1fr); }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .hero { padding-top: calc(var(--navbar-h) + var(--topbar-h) + 32px); }
  .hero-layout { grid-template-columns: 1fr; gap: 32px; }
  .hero-visual { display: none; }
  .hero-title { font-size: 32px; }
  .hero-stats { gap: 12px; }
  .stat-sep { display: none; }
  .nav-menu {
    display: none;
    position: fixed;
    top: calc(var(--navbar-h) + var(--topbar-h));
    left: 0; right: 0;
    background: white;
    padding: 20px;
    box-shadow: var(--shadow-lg);
    flex-direction: column;
    gap: 4px;
  }
  .nav-menu.active { display: flex; }
  .nav-toggle { display: flex; }
  .nav-link { width: 100%; text-align: center; padding: 12px; }
  .features-grid { grid-template-columns: 1fr; }
  .ai-grid { grid-template-columns: 1fr; }
  .ai-stats-row { grid-template-columns: repeat(2, 1fr); }
  .ownership-cards { grid-template-columns: 1fr; }
  .solutions-grid { grid-template-columns: 1fr; }
  .coverage-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid { grid-template-columns: 1fr; }
  .faq-columns { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .contact-layout { grid-template-columns: 1fr; gap: 32px; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .footer-nav { grid-template-columns: repeat(2, 1fr); }
  .vs-banner { grid-template-columns: 1fr; gap: 16px; }
  .vs-middle { display: none; }
  .compliance-grid { flex-direction: column; align-items: flex-start; }
  .compliance-arrow { align-self: center; transform: rotate(90deg); }
  .forrester-stats { gap: 24px; }
  .forrester-stats strong { font-size: 28px; }
}
@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .ai-stats-row { grid-template-columns: 1fr; }
  .coverage-grid { grid-template-columns: repeat(2, 1fr); }
}