:root {
  --blue-dark: #1e3a8a;
  --blue-medium: #3b82f6;
  --blue-light: #60a5fa;
  --blue-very-light: #dbeafe;
  --white: #ffffff;
  --black: #111827;
  --gray-light: #f3f4f6;
  --gray-medium: #9ca3af;
  --gray-dark: #6b7280;
  --live-on: #10b981;
  --live-off: #ef4444;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: var(--black);
  background-color: var(--white);
  overflow-x: hidden;
}

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

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
}

h1 {
  font-size: 2.5rem;
  color: var(--blue-dark);
}

h2 {
  font-size: 2rem;
  color: var(--blue-dark);
}

h3 {
  font-size: 1.5rem;
  color: var(--blue-medium);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--black);
}

a {
  color: var(--blue-medium);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--blue-dark);
}

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

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  border: none;
  transition: all 0.3s ease;
}

.btn-primary {
  background-color: var(--blue-dark);
  color: var(--white);
}

.btn-primary:hover {
  background-color: var(--blue-medium);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: var(--white);
  color: var(--blue-dark);
  border: 2px solid var(--blue-dark);
}

.btn-secondary:hover {
  background-color: var(--blue-very-light);
}

.navbar {
  background-color: var(--white);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
}

.logo {
  height: 40px;
  display: flex;
  align-items: center;
}

.logo img {
  height: 100%;
  width: auto;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
}

.nav-links a {
  color: var(--black);
  font-weight: 500;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--blue-dark);
  border-bottom: 2px solid var(--blue-dark);
}

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 4px;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background-color: var(--blue-dark);
  border-radius: var(--radius-sm);
}

.hero {
  background: linear-gradient(135deg, var(--blue-dark) 0%, var(--blue-light) 100%);
  color: var(--white);
  padding: var(--spacing-xl) 0;
  text-align: center;
  min-height: 60vh;
  display: flex;
  align-items: center;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

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

.hero p {
  color: var(--blue-very-light);
  font-size: 1.25rem;
  margin-bottom: var(--spacing-lg);
}

.hero-cta {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

.services {
  padding: var(--spacing-xl) 0;
  background-color: var(--white);
}

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

.service-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.service-card {
  background-color: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
  text-align: center;
  transition: transform 0.3s ease;
}

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

.service-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.icon-bag {
  width: 40px;
  height: 48px;
  border: 3px solid var(--blue-dark);
  border-radius: 0 0 10px 10px;
  position: relative;
}

.icon-bag::before {
  content: '';
  position: absolute;
  width: 24px;
  height: 6px;
  border: 3px solid var(--blue-dark);
  border-radius: 6px;
  top: -12px;
  left: 4px;
}

.icon-truck {
  width: 48px;
  height: 24px;
  border: 3px solid var(--blue-dark);
  border-radius: var(--radius-md);
  position: relative;
}

.icon-truck::before,
.icon-truck::after {
  content: '';
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--blue-dark);
  bottom: -6px;
}

.icon-truck::before {
  left: 8px;
}

.icon-truck::after {
  right: 8px;
}

.icon-gear-code {
  position: relative;
  width: 48px;
  height: 48px;
}

.icon-gear-code::before {
  content: '</>';
  position: absolute;
  font-size: 24px;
  font-weight: bold;
  color: var(--blue-dark);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 1;
}

.icon-gear-code::after {
  content: '';
  position: absolute;
  width: 40px;
  height: 40px;
  border: 3px solid var(--blue-dark);
  border-radius: 50%;
  top: 4px;
  left: 4px;
}

.live-section {
  padding: var(--spacing-xl) 0;
  background-color: var(--blue-very-light);
}

.live-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.live-card {
  background-color: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
}

.live-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.live-indicator {
  display: inline-block;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--live-off);
  animation: pulse 2s infinite;
}

.live-indicator.online {
  background-color: var(--live-on);
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.live-link {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  background-color: var(--blue-light);
  color: var(--white);
  border-radius: var(--radius-sm);
  font-weight: 500;
}

.live-link:hover {
  background-color: var(--blue-medium);
}

.app-section {
  padding: var(--spacing-xl) 0;
  background-color: var(--white);
}

.app-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-lg);
}

.app-status {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  background-color: var(--blue-very-light);
  color: var(--blue-dark);
  border: 2px solid var(--blue-light);
  border-radius: var(--radius-md);
  font-weight: 600;
}

.qr-placeholder {
  width: 160px;
  height: 160px;
  border: 3px solid var(--blue-dark);
  background-image: 
    linear-gradient(90deg, var(--blue-light) 1px, transparent 1px),
    linear-gradient(0deg, var(--blue-light) 1px, transparent 1px);
  background-size: 10px 10px;
  position: relative;
  border-radius: var(--radius-md);
}

.qr-placeholder::before {
  content: '扫一扫';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: var(--white);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  font-weight: bold;
  color: var(--blue-dark);
}

.footer {
  background-color: var(--blue-dark);
  color: var(--white);
  padding: var(--spacing-xl) 0 var(--spacing-lg);
}

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

.footer-section h3 {
  color: var(--white);
  margin-bottom: var(--spacing-md);
}

.footer-section p,
.footer-section a {
  color: var(--blue-very-light);
}

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

.phone-protected {
  color: var(--blue-very-light);
  background-color: var(--blue-very-light);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  letter-spacing: 1px;
  user-select: all;
}

.phone-protected::selection {
  color: var(--blue-dark);
  background-color: var(--blue-very-light);
}

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

.contact-form {
  max-width: 600px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: var(--spacing-md);
}

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

.form-control {
  width: 100%;
  padding: 0.75rem;
  border: 2px solid var(--gray-light);
  border-radius: var(--radius-md);
  font-size: 1rem;
  transition: border-color 0.3s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--blue-light);
}

textarea.form-control {
  min-height: 150px;
  resize: vertical;
}

.service-steps {
  display: flex;
  justify-content: space-between;
  margin: var(--spacing-lg) 0;
  position: relative;
}

.service-steps::before {
  content: '';
  position: absolute;
  top: 20px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--blue-light);
  z-index: 1;
}

.step {
  text-align: center;
  position: relative;
  z-index: 2;
  flex: 1;
}

.step-number {
  width: 40px;
  height: 40px;
  background-color: var(--blue-dark);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  margin: 0 auto var(--spacing-sm);
}

.step-content {
  background-color: var(--white);
  padding: var(--spacing-md);
}

@media (max-width: 768px) {
  html {
    font-size: 14px;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
  
  .hamburger {
    display: flex;
  }
  
  .nav-links {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background-color: var(--white);
    flex-direction: column;
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
    display: none;
  }
  
  .nav-links.active {
    display: flex;
  }
  
  .hero-cta {
    flex-direction: column;
  }
  
  .service-cards,
  .live-cards {
    grid-template-columns: 1fr;
  }
  
  .service-steps {
    flex-direction: column;
    gap: var(--spacing-lg);
  }
  
  .service-steps::before {
    display: none;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .hero {
    min-height: 50vh;
    padding: var(--spacing-lg) 0;
  }
}
/* 管理员链接样式 */
.admin-link {
    color: #ef4444 !important;
    font-weight: 600;
    position: relative;
}

.admin-link:hover {
    color: #dc2626 !important;
}

.admin-link::after {
    content: '🔐';
    margin-left: 4px;
    font-size: 0.9em;
}

/* 管理后台提示样式 */
.admin-notice {
    background-color: #fef3c7;
    border: 1px solid #f59e0b;
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    margin: var(--spacing-md) 0;
    font-size: 0.9rem;
    color: #92400e;
}

.admin-notice a {
    color: #dc2626;
    font-weight: 600;
}
/* 电话保护样式增强 */
.phone-container {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-bottom: 4px;
}

.phone-protected {
    color: var(--blue-very-light);
    background-color: var(--blue-very-light);
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    letter-spacing: 0.5px;
    font-family: monospace;
}

.show-phone-btn,
.copy-phone-btn {
    padding: 4px 8px;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.8rem;
    transition: all 0.3s ease;
}

.show-phone-btn {
    background-color: var(--blue-light);
    color: white;
}

.show-phone-btn:hover {
    background-color: var(--blue-medium);
}

.copy-phone-btn {
    background-color: var(--gray-medium);
    color: white;
}

.copy-phone-btn:hover {
    background-color: var(--gray-dark);
}

/* 页脚电话样式调整 */
.footer-section p {
    line-height: 1.8;
}