/* 银联商务智能POS官网 - 全局样式 */
/* 深钴蓝实时立减风 */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Noto+Sans+SC:wght@300;400;500;600;700&display=swap');

:root {
  /* 主色调 - 深钴蓝系列 */
  --ums-cobalt: #0F4C75;
  --ums-cobalt-dark: #1B6B93;
  --ums-cobalt-light: #2980B9;
  
  /* 辅助色 */
  --realtime-cyan: #06B6D4;
  --realtime-cyan-dark: #0891B2;
  --discount-green: #A3E635;
  --discount-green-dark: #84CC16;
  
  /* 功能色 */
  --bg-page: #F0F9FF;
  --bg-white: #FFFFFF;
  --text-dark: #0F4C75;
  --text-body: #334155;
  --text-light: #64748B;
  --text-muted: #94A3B8;
  
  /* 边框和阴影 */
  --border-light: #E2E8F0;
  --shadow-sm: 0 1px 2px rgba(15, 76, 117, 0.05);
  --shadow-md: 0 4px 6px rgba(15, 76, 117, 0.1);
  --shadow-lg: 0 10px 15px rgba(15, 76, 117, 0.15);
  --shadow-xl: 0 20px 25px rgba(15, 76, 117, 0.2);
  
  /* 间距 */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  /* 圆角 */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  
  /* 过渡 */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* 导航高度 */
  --nav-height: 70px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Noto Sans SC', 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-body);
  background-color: var(--bg-page);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 数字和英文使用 DM Sans */
.number, .english {
  font-family: 'DM Sans', sans-serif;
}

/* 容器 */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* 导航栏 */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: var(--bg-white);
  z-index: 1000;
  transition: box-shadow var(--transition-base);
}

.navbar.scrolled {
  box-shadow: var(--shadow-lg);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
  color: var(--ums-cobalt);
  font-weight: 700;
  font-size: 1.25rem;
}

.navbar-brand svg {
  width: 36px;
  height: 36px;
}

.navbar-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
  list-style: none;
}

.navbar-menu a {
  text-decoration: none;
  color: var(--text-body);
  font-weight: 500;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.navbar-menu a:hover,
.navbar-menu a.active {
  color: var(--ums-cobalt);
  background: rgba(15, 76, 117, 0.08);
}

.navbar-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  background: linear-gradient(135deg, var(--ums-cobalt), var(--ums-cobalt-dark));
  color: white !important;
  border-radius: var(--radius-lg);
  font-weight: 600;
  transition: all var(--transition-fast);
}

.navbar-cta:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  background: linear-gradient(135deg, var(--ums-cobalt-dark), var(--ums-cobalt));
}

/* 汉堡菜单按钮 */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--ums-cobalt);
  transition: all var(--transition-fast);
}

/* Hero 区域 */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-height);
  background: linear-gradient(135deg, var(--ums-cobalt) 0%, var(--ums-cobalt-dark) 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.5;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: white;
  max-width: 900px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-2xl);
  font-size: 0.9rem;
  margin-bottom: var(--spacing-xl);
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-lg);
}

.hero-subtitle {
  font-size: 1.5rem;
  opacity: 0.9;
  margin-bottom: var(--spacing-2xl);
}

/* 实时立减动画区域 - 首创 */
.realtime-animation {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2xl);
  margin: var(--spacing-2xl) 0;
  flex-wrap: wrap;
}

.animation-box {
  position: relative;
  padding: var(--spacing-xl);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-xl);
  min-width: 200px;
  text-align: center;
}

.animation-box.realtime {
  border: 2px solid var(--realtime-cyan);
}

.animation-box.discount {
  border: 2px solid var(--discount-green);
}

.animation-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  display: block;
}

/* 实时动画 */
@keyframes realtime-flow {
  0% { transform: translateX(-100px); opacity: 0; }
  20% { opacity: 1; }
  80% { opacity: 1; }
  100% { transform: translateX(100px); opacity: 0; }
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 5px var(--realtime-cyan); }
  50% { box-shadow: 0 0 20px var(--realtime-cyan), 0 0 40px var(--realtime-cyan); }
}

.animation-box.realtime .animation-icon {
  animation: pulse-glow 1.5s ease-in-out infinite;
}

/* 立减动画 */
@keyframes discount-flash {
  0%, 100% { transform: scale(1); opacity: 0.8; }
  50% { transform: scale(1.2); opacity: 1; }
}

.animation-box.discount .animation-icon {
  animation: discount-flash 1s ease-in-out infinite;
}

.formula {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-size: 1.25rem;
  font-weight: 600;
}

.formula-item {
  padding: var(--spacing-sm) var(--spacing-md);
  background: rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-md);
}

/* Hero 按钮 */
.hero-buttons {
  display: flex;
  gap: var(--spacing-lg);
  justify-content: center;
  flex-wrap: wrap;
  margin-top: var(--spacing-xl);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: all var(--transition-fast);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--discount-green), var(--discount-green-dark));
  color: var(--ums-cobalt);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(163, 230, 53, 0.4);
}

.btn-secondary {
  background: transparent;
  color: white;
  border: 2px solid white;
}

.btn-secondary:hover {
  background: white;
  color: var(--ums-cobalt);
}

/* Hero 装饰动画 */
.hero-decoration {
  position: absolute;
  pointer-events: none;
}

.decoration-circle {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(180deg); }
}

/* 通用标题样式 */
.section {
  padding: var(--spacing-3xl) 0;
}

.section-title {
  text-align: center;
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--ums-cobalt);
  margin-bottom: var(--spacing-2xl);
}

.section-title .icon {
  margin-right: var(--spacing-sm);
}

/* 信息卡片网格 */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
}

.info-card {
  background: var(--bg-white);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.info-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
}

.info-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.info-card.realtime::before {
  background: var(--realtime-cyan);
}

.info-card.discount::before {
  background: var(--discount-green);
}

.info-card.default::before {
  background: var(--ums-cobalt);
}

.info-card-icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
}

.info-card-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--ums-cobalt);
  margin-bottom: var(--spacing-sm);
}

.info-card-text {
  color: var(--text-light);
  line-height: 1.7;
}

/* 产品展示区 */
.product-showcase {
  background: var(--bg-white);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-xl);
}

.product-card {
  background: linear-gradient(135deg, var(--bg-page), var(--bg-white));
  border: 2px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  text-align: center;
  transition: all var(--transition-base);
}

.product-card:hover {
  border-color: var(--ums-cobalt);
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.product-image {
  width: 100%;
  max-width: 200px;
  height: 200px;
  margin: 0 auto var(--spacing-lg);
  background: linear-gradient(135deg, var(--ums-cobalt), var(--ums-cobalt-dark));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
}

.product-name {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--ums-cobalt);
  margin-bottom: var(--spacing-sm);
}

.product-model {
  color: var(--text-light);
  margin-bottom: var(--spacing-md);
}

/* 理由列表 */
.reasons-list {
  max-width: 800px;
  margin: 0 auto;
}

.reason-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-md);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.reason-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateX(5px);
}

.reason-number {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--ums-cobalt), var(--ums-cobalt-dark));
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  flex-shrink: 0;
}

.reason-content h4 {
  color: var(--ums-cobalt);
  margin-bottom: var(--spacing-xs);
}

.reason-content p {
  color: var(--text-light);
}

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

.compare-table table {
  width: 100%;
  border-collapse: collapse;
}

.compare-table th,
.compare-table td {
  padding: var(--spacing-md) var(--spacing-lg);
  text-align: left;
  border-bottom: 1px solid var(--border-light);
}

.compare-table th {
  background: var(--ums-cobalt);
  color: white;
  font-weight: 600;
}

.compare-table tr:last-child td {
  border-bottom: none;
}

.compare-table tr:hover td {
  background: rgba(15, 76, 117, 0.03);
}

.compare-table .highlight {
  background: rgba(163, 230, 53, 0.1);
  font-weight: 600;
  color: var(--ums-cobalt);
}

/* 品牌标签 */
.brand-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
}

.brand-tag.ums {
  background: var(--ums-cobalt);
  color: white;
}

.brand-tag.jl {
  background: #991B1B;
  color: white;
}

.brand-tag.hkr {
  background: #76232A;
  color: white;
}

.brand-tag.ld {
  background: #1E40AF;
  color: white;
}

/* CTA 区域 */
.cta-section {
  background: linear-gradient(135deg, var(--ums-cobalt) 0%, var(--ums-cobalt-dark) 100%);
  padding: var(--spacing-3xl) 0;
  text-align: center;
  color: white;
}

.cta-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.cta-text {
  font-size: 1.125rem;
  opacity: 0.9;
  margin-bottom: var(--spacing-xl);
}

/* 页脚 */
.footer {
  background: linear-gradient(135deg, var(--ums-cobalt) 0%, var(--ums-cobalt-dark) 100%);
  color: white;
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-section h4 {
  font-size: 1.125rem;
  margin-bottom: var(--spacing-md);
  opacity: 0.9;
}

.footer-section ul {
  list-style: none;
}

.footer-section li {
  margin-bottom: var(--spacing-sm);
}

.footer-section a {
  color: white;
  opacity: 0.8;
  text-decoration: none;
  transition: opacity var(--transition-fast);
}

.footer-section a:hover {
  opacity: 1;
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  opacity: 0.8;
  font-size: 0.875rem;
}

/* FAQ 手风琴 */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg);
  cursor: pointer;
  font-weight: 600;
  color: var(--ums-cobalt);
  transition: all var(--transition-fast);
}

.faq-question:hover {
  background: rgba(15, 76, 117, 0.03);
}

.faq-icon {
  transition: transform var(--transition-fast);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

.faq-answer-content {
  padding: 0 var(--spacing-lg) var(--spacing-lg);
  color: var(--text-light);
  line-height: 1.7;
}

/* 滚动渐入动画 */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

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

/* 特殊 Hero 样式 - 实时青 */
.hero-realtime {
  background: linear-gradient(135deg, var(--realtime-cyan) 0%, var(--realtime-cyan-dark) 100%);
}

.hero-realtime .hero-title {
  font-size: 4rem;
}

/* 特殊 Hero 样式 - 立减绿 */
.hero-discount {
  background: linear-gradient(135deg, var(--discount-green) 0%, var(--discount-green-dark) 100%);
  color: var(--ums-cobalt);
}

.hero-discount .hero-title {
  font-size: 4rem;
  color: white;
}

.hero-discount .hero-subtitle {
  color: rgba(255, 255, 255, 0.9);
}

/* 三方对比表格 */
.tri-compare {
  background: var(--bg-white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.tri-compare table {
  width: 100%;
  border-collapse: collapse;
}

.tri-compare th,
.tri-compare td {
  padding: var(--spacing-md);
  text-align: center;
  border: 1px solid var(--border-light);
}

.tri-compare th {
  font-weight: 600;
  color: white;
}

.tri-compare th.col-1 {
  background: var(--ums-cobalt);
}

.tri-compare th.col-2 {
  background: var(--text-light);
}

.tri-compare th.col-3 {
  background: var(--text-muted);
}

.tri-compare .best {
  background: rgba(163, 230, 53, 0.15);
  font-weight: 600;
  color: var(--ums-cobalt);
}

.tri-compare .good {
  background: rgba(6, 182, 212, 0.1);
}

.tri-compare .normal {
  background: rgba(148, 163, 184, 0.1);
}

/* 响应式设计 */
@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }
  
  .navbar-menu {
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg-white);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    display: none;
  }
  
  .navbar-menu.active {
    display: flex;
  }
  
  .hero-title {
    font-size: 2.25rem;
  }
  
  .hero-subtitle {
    font-size: 1.125rem;
  }
  
  .section-title {
    font-size: 1.75rem;
  }
  
  .realtime-animation {
    flex-direction: column;
  }
  
  .formula {
    flex-direction: column;
  }
  
  .hero-realtime .hero-title,
  .hero-discount .hero-title {
    font-size: 2.5rem;
  }
  
  .compare-table {
    font-size: 0.875rem;
  }
  
  .compare-table th,
  .compare-table td {
    padding: var(--spacing-sm);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .hero-title {
    font-size: 1.75rem;
  }
  
  .card-grid {
    grid-template-columns: 1fr;
  }
  
  .product-grid {
    grid-template-columns: 1fr;
  }
}

/* 滚动条美化 */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-page);
}

::-webkit-scrollbar-thumb {
  background: var(--ums-cobalt);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--ums-cobalt-dark);
}