/* ========================================
   嘉联支付手刷MPOS官网 - CSS样式表
   深钴蓝多户免费风
   ======================================== */

/* CSS Variables */
:root {
  /* 主色调 */
  --jialian-cobalt: #1E3A8A;
  --jialian-cobalt-dark: #1E40AF;
  --jialian-cobalt-light: #3B82F6;
  
  /* 多户紫色 */
  --multi-purple: #A855F7;
  --multi-purple-dark: #9333EA;
  --multi-purple-light: #C084FC;
  
  /* 免费绿色 */
  --free-green: #22C55E;
  --free-green-dark: #16A34A;
  --free-green-light: #4ADE80;
  
  /* 背景与文字 */
  --bg-page: #EFF6FF;
  --bg-white: #FFFFFF;
  --text-dark: #1E3A8A;
  --text-body: #334155;
  --text-muted: #64748B;
  
  /* 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: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  
  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(30, 58, 138, 0.1), 0 4px 6px -2px rgba(30, 58, 138, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(30, 58, 138, 0.1), 0 10px 10px -5px rgba(30, 58, 138, 0.04);
  
  /* 过渡 */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* 导航高度 */
  --nav-height: 70px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Noto Sans SC', 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background-color: var(--bg-page);
  color: var(--text-body);
  line-height: 1.6;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-fast);
}

ul, ol {
  list-style: none;
}

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

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-dark);
  font-weight: 600;
  line-height: 1.3;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.25rem; }
}

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

/* ========================================
   Navigation
   ======================================== */
.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-normal);
}

.navbar.scrolled {
  box-shadow: 0 4px 20px rgba(30, 58, 138, 0.15);
}

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

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--jialian-cobalt);
}

.nav-logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--jialian-cobalt), var(--jialian-cobalt-dark));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.nav-link {
  color: var(--text-body);
  font-weight: 500;
  padding: var(--spacing-sm) 0;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--jialian-cobalt), var(--multi-purple));
  transition: width var(--transition-normal);
}

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

.nav-link:hover {
  color: var(--jialian-cobalt);
}

.nav-cta {
  background: linear-gradient(135deg, var(--jialian-cobalt), var(--jialian-cobalt-dark));
  color: white;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-weight: 600;
  transition: all var(--transition-normal);
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* Mobile Menu Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--spacing-sm);
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--jialian-cobalt);
  transition: all var(--transition-fast);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }
  
  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--bg-white);
    flex-direction: column;
    padding: var(--spacing-lg);
    gap: var(--spacing-md);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
  }
  
  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav-cta {
    width: 100%;
    text-align: center;
  }
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, var(--jialian-cobalt) 0%, var(--jialian-cobalt-dark) 100%);
  padding-top: calc(var(--nav-height) + var(--spacing-3xl));
  padding-bottom: var(--spacing-3xl);
  position: relative;
  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='0.03'%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;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: 50px;
  font-size: 0.9rem;
  margin-bottom: var(--spacing-xl);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero-title {
  font-size: 3rem;
  font-weight: 700;
  color: white;
  margin-bottom: var(--spacing-md);
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

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

@media (max-width: 768px) {
  .hero-title {
    font-size: 2rem;
  }
  .hero-subtitle {
    font-size: 1.25rem;
  }
}

/* Animation Container */
.animation-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xl);
  margin: var(--spacing-2xl) 0;
  flex-wrap: wrap;
}

.animation-box {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  min-width: 200px;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.animation-box.multi {
  border-color: var(--multi-purple);
  box-shadow: 0 0 30px rgba(168, 85, 247, 0.3);
}

.animation-box.free {
  border-color: var(--free-green);
  box-shadow: 0 0 30px rgba(34, 197, 94, 0.3);
}

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

.animation-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: white;
}

.animation-desc {
  font-size: 0.9rem;
  opacity: 0.8;
  margin-top: var(--spacing-xs);
}

.animation-plus {
  font-size: 2rem;
  font-weight: 700;
  color: white;
}

.animation-equals {
  font-size: 2rem;
  font-weight: 700;
  color: var(--free-green-light);
  text-shadow: 0 0 20px rgba(34, 197, 94, 0.5);
}

@media (max-width: 768px) {
  .animation-plus,
  .animation-equals {
    font-size: 1.5rem;
  }
  
  .animation-box {
    min-width: 150px;
    padding: var(--spacing-lg);
  }
}

/* Hero Buttons */
.hero-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1rem;
  transition: all var(--transition-normal);
}

.btn-primary {
  background: linear-gradient(135deg, var(--free-green), var(--free-green-dark));
  color: white;
  box-shadow: 0 4px 15px rgba(34, 197, 94, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(34, 197, 94, 0.5);
}

.btn-secondary {
  background: transparent;
  color: white;
  border: 2px solid rgba(255, 255, 255, 0.5);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: white;
}

/* ========================================
   Section Styles
   ======================================== */
.section {
  padding: var(--spacing-3xl) 0;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section-title h2 {
  font-size: 2rem;
  margin-bottom: var(--spacing-sm);
}

.section-title p {
  color: var(--text-muted);
  font-size: 1.1rem;
}

/* ========================================
   Cards
   ======================================== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

@media (max-width: 992px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 576px) {
  .card-grid {
    grid-template-columns: 1fr;
  }
}

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

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--jialian-cobalt);
}

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

.card.multi::before {
  background: var(--multi-purple);
}

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

.card-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: var(--spacing-lg);
  background: linear-gradient(135deg, var(--jialian-cobalt), var(--jialian-cobalt-light));
  color: white;
}

.card.multi .card-icon {
  background: linear-gradient(135deg, var(--multi-purple), var(--multi-purple-light));
}

.card.free .card-icon {
  background: linear-gradient(135deg, var(--free-green), var(--free-green-light));
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
}

.card-text {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ========================================
   Product Display
   ======================================== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-xl);
  max-width: 800px;
  margin: 0 auto;
}

@media (max-width: 576px) {
  .product-grid {
    grid-template-columns: 1fr;
  }
}

.product-card {
  background: var(--bg-white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-normal);
}

.product-card:hover {
  transform: scale(1.02);
}

.product-image {
  height: 200px;
  background: linear-gradient(135deg, var(--jialian-cobalt), var(--jialian-cobalt-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  color: white;
}

.product-content {
  padding: var(--spacing-xl);
  text-align: center;
}

.product-badge {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.product-badge.standard {
  background: rgba(30, 58, 138, 0.1);
  color: var(--jialian-cobalt);
}

.product-badge.flag {
  background: linear-gradient(135deg, var(--jialian-cobalt), var(--multi-purple));
  color: white;
}

.product-name {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-xs);
}

.product-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ========================================
   Features List
   ======================================== */
.features-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  max-width: 900px;
  margin: 0 auto;
}

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

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

.feature-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--jialian-cobalt), var(--jialian-cobalt-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: white;
  flex-shrink: 0;
}

.feature-content h4 {
  font-size: 1.1rem;
  margin-bottom: var(--spacing-xs);
}

.feature-content p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ========================================
   Comparison Table
   ======================================== */
.comparison-section {
  background: var(--bg-white);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.comparison-table th,
.comparison-table td {
  padding: var(--spacing-lg);
  text-align: center;
  border-bottom: 1px solid #E5E7EB;
}

.comparison-table th {
  background: linear-gradient(135deg, var(--jialian-cobalt), var(--jialian-cobalt-dark));
  color: white;
  font-weight: 600;
  font-size: 1rem;
}

.comparison-table th:first-child {
  background: var(--text-dark);
}

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

.comparison-table tr:hover td {
  background: rgba(30, 58, 138, 0.03);
}

.comparison-table .brand-name {
  font-weight: 600;
  text-align: left;
}

.comparison-table .highlight {
  background: rgba(34, 197, 94, 0.1);
  color: var(--free-green-dark);
  font-weight: 600;
}

.comparison-table .check {
  color: var(--free-green);
  font-size: 1.25rem;
}

.comparison-table .cross {
  color: #DC2626;
  font-size: 1.25rem;
}

@media (max-width: 768px) {
  .comparison-table {
    font-size: 0.85rem;
  }
  
  .comparison-table th,
  .comparison-table td {
    padding: var(--spacing-sm);
  }
}

/* ========================================
   CTA Section
   ======================================== */
.cta-section {
  background: linear-gradient(135deg, var(--jialian-cobalt) 0%, var(--jialian-cobalt-dark) 100%);
  padding: var(--spacing-3xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM12 60c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z' fill='%23ffffff' fill-opacity='0.03' fill-rule='evenodd'/%3E%3C/svg%3E");
}

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

.cta-content h2 {
  color: white;
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
}

.cta-content p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xl);
}

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

.footer-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

@media (max-width: 576px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.footer-section h4 {
  color: white;
  font-size: 1.1rem;
  margin-bottom: var(--spacing-md);
}

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

.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  transition: color var(--transition-fast);
}

.footer-section a:hover {
  color: white;
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
}

/* ========================================
   FAQ Section
   ======================================== */
.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 {
  width: 100%;
  padding: var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--text-dark);
  text-align: left;
  transition: all var(--transition-fast);
}

.faq-question:hover {
  color: var(--jialian-cobalt);
}

.faq-icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-fast);
  font-size: 1.5rem;
  line-height: 1;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

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

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

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

/* ========================================
   Page Hero (Purple/Green)
   ======================================== */
.page-hero {
  min-height: 400px;
  padding-top: calc(var(--nav-height) + var(--spacing-3xl));
  padding-bottom: var(--spacing-3xl);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-hero.purple {
  background: linear-gradient(135deg, var(--multi-purple) 0%, var(--multi-purple-dark) 100%);
}

.page-hero.green {
  background: linear-gradient(135deg, var(--free-green) 0%, var(--free-green-dark) 100%);
}

.page-hero.blue {
  background: linear-gradient(135deg, var(--jialian-cobalt) 0%, var(--jialian-cobalt-dark) 100%);
}

.page-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");
}

.page-hero-content {
  position: relative;
  z-index: 1;
  color: white;
}

.page-hero h1 {
  font-size: 3.5rem;
  font-weight: 700;
  color: white;
  margin-bottom: var(--spacing-md);
}

.page-hero p {
  font-size: 1.25rem;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto;
}

@media (max-width: 768px) {
  .page-hero h1 {
    font-size: 2.5rem;
  }
}

/* ========================================
   Three Way Comparison
   ======================================== */
.three-comparison {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

@media (max-width: 992px) {
  .three-comparison {
    grid-template-columns: 1fr;
  }
}

.three-card {
  background: var(--bg-white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-normal);
}

.three-card:hover {
  transform: translateY(-5px);
}

.three-card-header {
  padding: var(--spacing-xl);
  text-align: center;
}

.three-card-header h3 {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-xs);
}

.three-card.recommended .three-card-header {
  background: linear-gradient(135deg, var(--free-green), var(--free-green-dark));
  color: white;
}

.three-card.recommended .three-card-header h3 {
  color: white;
}

.three-card-body {
  padding: var(--spacing-xl);
}

.three-card-body ul {
  margin-bottom: var(--spacing-lg);
}

.three-card-body li {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
  color: var(--text-body);
}

.three-card-body li .icon {
  color: var(--free-green);
}

.three-card-body li .icon.cross {
  color: #DC2626;
}

.three-card-footer {
  padding: var(--spacing-lg);
  text-align: center;
}

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

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

/* ========================================
   Compare Page Specific
   ======================================== */
.dimension-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-xl);
}

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

.dimension-card {
  background: var(--bg-white);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  box-shadow: var(--shadow-md);
}

.dimension-card h3 {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
  font-size: 1.25rem;
}

.dimension-card ul {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.dimension-card li {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.dimension-card .brand-tag {
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
}

/* ========================================
   Form Styles
   ======================================== */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 500;
  color: var(--text-dark);
}

.form-input {
  width: 100%;
  padding: var(--spacing-md);
  border: 1px solid #E5E7EB;
  border-radius: var(--radius-md);
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.form-input:focus {
  outline: none;
  border-color: var(--jialian-cobalt);
  box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

.form-submit {
  width: 100%;
  padding: var(--spacing-md);
  background: linear-gradient(135deg, var(--free-green), var(--free-green-dark));
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.form-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(34, 197, 94, 0.4);
}

/* ========================================
   Utility Classes
   ======================================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-cobalt { color: var(--jialian-cobalt); }
.text-purple { color: var(--multi-purple); }
.text-green { color: var(--free-green); }
.text-white { color: white; }

.bg-white { background: var(--bg-white); }
.bg-cobalt { background: var(--jialian-cobalt); }
.bg-purple { background: var(--multi-purple); }
.bg-green { background: var(--free-green); }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }
.mt-2xl { margin-top: var(--spacing-2xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }
.mb-2xl { margin-bottom: var(--spacing-2xl); }

/* Animation Keyframes */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}

.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}

.animate-bounce {
  animation: bounce 1s ease-in-out infinite;
}

/* Loading Animation */
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.skeleton {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}