/* ========================================
   联动优势 UMP 手刷MPOS 官网样式
   深紫铁墨码套风
======================================== */

/* CSS Variables */
:root {
  --ump-plum: #221E28;
  --ump-plum-light: #322E38;
  --code-green: #10B981;
  --code-green-light: #34D399;
  --trick-cyan: #06B6D4;
  --trick-cyan-light: #22D3EE;
  --bg-page: #E8E5EB;
  --bg-card: #FFFFFF;
  --text-dark: #0A080D;
  --text-body: #334155;
  --text-muted: #64748B;
  --text-light: #94A3B8;
  --border-light: #E2E8F0;
  
  /* 字体 */
  --font-cn: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-en: 'DM Sans', 'Inter', sans-serif;
  
  /* 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;
  
  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(34, 30, 40, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(34, 30, 40, 0.1), 0 2px 4px -1px rgba(34, 30, 40, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(34, 30, 40, 0.1), 0 4px 6px -2px rgba(34, 30, 40, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(34, 30, 40, 0.1), 0 10px 10px -5px rgba(34, 30, 40, 0.04);
  
  /* 过渡 */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 350ms ease;
}

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

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

body {
  font-family: var(--font-cn);
  background-color: var(--bg-page);
  color: var(--text-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  text-decoration: none;
  color: inherit;
}

ul, ol {
  list-style: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-dark);
}

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

.text-highlight {
  color: var(--code-green);
}

.text-highlight-cyan {
  color: var(--trick-cyan);
}

/* 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;
  z-index: 1000;
  background: var(--bg-card);
  transition: box-shadow var(--transition-normal);
}

.navbar.scrolled {
  box-shadow: 0 4px 20px rgba(34, 30, 40, 0.15);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

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

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

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

.navbar-link {
  color: var(--text-body);
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
}

.navbar-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--code-green);
  transition: width var(--transition-normal);
}

.navbar-link:hover {
  color: var(--ump-plum);
}

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

.navbar-cta {
  background: var(--code-green);
  color: white;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-weight: 600;
  transition: all var(--transition-fast);
}

.navbar-cta:hover {
  background: var(--code-green-light);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* Mobile Menu */
.navbar-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
}

.navbar-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--ump-plum);
  margin: 5px 0;
  transition: all var(--transition-fast);
}

@media (max-width: 768px) {
  .navbar-toggle {
    display: block;
  }
  
  .navbar-menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--bg-card);
    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);
  }
  
  .navbar-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
}

/* ========================================
   Hero Section
======================================== */
.hero {
  position: relative;
  min-height: 600px;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  background: linear-gradient(135deg, var(--ump-plum) 0%, var(--ump-plum-light) 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at 30% 20%, rgba(16, 185, 129, 0.15) 0%, transparent 50%),
              radial-gradient(ellipse at 70% 80%, rgba(6, 182, 212, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
}

.hero-badge {
  display: inline-block;
  background: rgba(16, 185, 129, 0.2);
  color: var(--code-green);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.hero-title {
  font-size: 3rem;
  color: white;
  margin-bottom: var(--spacing-md);
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--spacing-xl);
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--code-green) 0%, var(--code-green-light) 100%);
  color: white;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.5);
}

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

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

.btn-dark {
  background: var(--ump-plum);
  color: white;
}

.btn-dark:hover {
  background: var(--ump-plum-light);
}

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

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

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

.section-title p {
  color: var(--text-muted);
  font-size: 1.125rem;
}

.section-bg {
  background: var(--bg-card);
}

/* ========================================
   Cards
======================================== */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

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

.card-highlight {
  background: linear-gradient(135deg, var(--ump-plum) 0%, var(--ump-plum-light) 100%);
  color: white;
}

.card-highlight h3,
.card-highlight h4 {
  color: white;
}

.card-highlight p {
  color: rgba(255, 255, 255, 0.85);
}

.card-green {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, rgba(52, 211, 153, 0.05) 100%);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.card-cyan {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.1) 0%, rgba(34, 211, 238, 0.05) 100%);
  border: 1px solid rgba(6, 182, 212, 0.2);
}

/* ========================================
   Features Grid
======================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.features-grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

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

@media (max-width: 768px) {
  .features-grid,
  .features-grid-2 {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   Image + Text Layout
======================================== */
.image-text {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
}

.image-text.reverse {
  direction: rtl;
}

.image-text.reverse > * {
  direction: ltr;
}

@media (max-width: 768px) {
  .image-text,
  .image-text.reverse {
    grid-template-columns: 1fr;
    direction: ltr;
  }
}

.image-text-image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.image-text-content h3 {
  margin-bottom: var(--spacing-md);
}

.image-text-content p {
  margin-bottom: var(--spacing-lg);
  color: var(--text-body);
}

/* ========================================
   Comparison Table
======================================== */
.comparison-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

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

.comparison-table th {
  background: var(--ump-plum);
  color: white;
  font-weight: 600;
  font-size: 1rem;
}

.comparison-table th:first-child {
  border-radius: var(--radius-xl) 0 0 0;
}

.comparison-table th:last-child {
  border-radius: 0 var(--radius-xl) 0 0;
}

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

.comparison-table tr:hover td {
  background: rgba(16, 185, 129, 0.03);
}

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

.comparison-table .cross {
  color: var(--text-light);
  font-size: 1.25rem;
}

@media (max-width: 768px) {
  .comparison-table {
    font-size: 0.875rem;
  }
  
  .comparison-table th,
  .comparison-table td {
    padding: var(--spacing-sm) var(--spacing-md);
  }
}

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

.faq-item {
  background: var(--bg-card);
  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);
  background: none;
  border: none;
  text-align: left;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-dark);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-cn);
}

.faq-question:hover {
  color: var(--ump-plum);
}

.faq-icon {
  width: 24px;
  height: 24px;
  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-normal);
}

.faq-item.active .faq-answer {
  max-height: 300px;
}

.faq-answer-content {
  padding: 0 var(--spacing-lg) var(--spacing-lg);
  color: var(--text-body);
}

/* ========================================
   CTA Section
======================================== */
.cta-section {
  background: linear-gradient(135deg, var(--ump-plum) 0%, var(--ump-plum-light) 100%);
  padding: var(--spacing-3xl) 0;
  text-align: center;
}

.cta-section h2 {
  color: white;
  margin-bottom: var(--spacing-md);
}

.cta-section p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.125rem;
  margin-bottom: var(--spacing-xl);
}

.cta-section .btn-primary {
  font-size: 1.125rem;
  padding: var(--spacing-md) var(--spacing-2xl);
}

/* ========================================
   Footer
======================================== */
.footer {
  background: linear-gradient(180deg, var(--ump-plum) 0%, var(--ump-plum-light) 100%);
  color: white;
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

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

.footer h4 {
  color: white;
  margin-bottom: var(--spacing-md);
  font-size: 1.125rem;
}

.footer p,
.footer a {
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.8;
}

.footer a:hover {
  color: var(--code-green);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-lg);
  text-align: center;
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.875rem;
}

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

/* ========================================
   Page Hero (Inner Pages)
======================================== */
.page-hero {
  padding: 140px 0 80px;
  text-align: center;
}

.page-hero.green-bg {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.15) 0%, rgba(52, 211, 153, 0.05) 100%);
  border-bottom: 3px solid var(--code-green);
}

.page-hero.cyan-bg {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.15) 0%, rgba(34, 211, 238, 0.05) 100%);
  border-bottom: 3px solid var(--trick-cyan);
}

.page-hero.plum-bg {
  background: linear-gradient(135deg, var(--ump-plum) 0%, var(--ump-plum-light) 100%);
}

.page-hero h1 {
  margin-bottom: var(--spacing-md);
}

.page-hero.dark h1,
.page-hero.dark p {
  color: white;
}

.page-hero p {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
}

/* ========================================
   Stats / Numbers
======================================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
}

.stat-item {
  text-align: center;
  padding: var(--spacing-xl);
}

.stat-number {
  font-family: var(--font-en);
  font-size: 3rem;
  font-weight: 700;
  color: var(--code-green);
  line-height: 1;
  margin-bottom: var(--spacing-sm);
}

.stat-label {
  color: var(--text-muted);
  font-size: 0.875rem;
}

@media (max-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .stat-number {
    font-size: 2.25rem;
  }
}

/* ========================================
   Feature Cards Staggered
======================================== */
.stagger-grid {
  display: grid;
  gap: var(--spacing-lg);
}

.stagger-grid-2 {
  grid-template-columns: 55fr 43fr;
}

.stagger-grid-3 {
  grid-template-columns: 1fr 1fr 1fr;
}

.stagger-item {
  padding: var(--spacing-xl);
  border-radius: var(--radius-xl);
}

.stagger-item h4 {
  margin-bottom: var(--spacing-sm);
  font-size: 1.25rem;
}

.stagger-item p {
  color: var(--text-muted);
}

.stagger-item .number {
  font-family: var(--font-en);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--code-green);
  margin-bottom: var(--spacing-sm);
}

@media (max-width: 992px) {
  .stagger-grid-2,
  .stagger-grid-3 {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   Info Box
======================================== */
.info-box {
  background: rgba(6, 182, 212, 0.05);
  border: 2px dashed var(--trick-cyan);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  text-align: center;
}

.info-box h3 {
  color: var(--trick-cyan);
  margin-bottom: var(--spacing-md);
}

.info-box p {
  color: var(--text-body);
}

/* ========================================
   Feature List
======================================== */
.feature-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.feature-item {
  display: flex;
  gap: var(--spacing-lg);
  align-items: flex-start;
}

.feature-icon {
  width: 48px;
  height: 48px;
  min-width: 48px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.feature-icon.green {
  background: rgba(16, 185, 129, 0.15);
  color: var(--code-green);
}

.feature-icon.cyan {
  background: rgba(6, 182, 212, 0.15);
  color: var(--trick-cyan);
}

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

.feature-content p {
  color: var(--text-muted);
  font-size: 0.9375rem;
}

/* ========================================
   Responsive Adjustments
======================================== */
@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.25rem; }
  
  .hero {
    min-height: auto;
    padding: 100px 0 60px;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .section {
    padding: var(--spacing-2xl) 0;
  }
  
  .btn {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 0.9375rem;
  }
}

/* ========================================
   Animation
======================================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

.animate-fade-in {
  animation: fadeInUp 0.6s ease forwards;
}

.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }

/* ========================================
   Utility Classes
======================================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.mb-0 { margin-bottom: 0; }
.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); }
.mt-lg { margin-top: var(--spacing-lg); }