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

:root {
  --primary-color: #333333;
  --secondary-color: #666666;
  --accent-color: #999999;
  --text-color: #2c2c2c;
  --light-text: #888888;
  --background-color: #fafafa;
  --card-bg: #ffffff;
  --border-radius: 8px;
  --transition: all 0.3s ease;
}

* {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background-color: var(--background-color);
  color: var(--text-color);
  line-height: 1.6;
}

.font-serif {
  font-family: 'Noto Serif SC', serif;
}

.hero-section {
  background-color: var(--primary-color);
  color: white;
}

.container {
  width: 100%;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
}

.fixed {
  position: fixed;
}

.top-0 {
  top: 0;
}

.left-0 {
  left: 0;
}

.right-0 {
  right: 0;
}

.z-50 {
  z-index: 50;
}

.bg-white\/95 {
  background-color: rgba(255, 255, 255, 0.95);
}

.backdrop-blur-sm {
  backdrop-filter: blur(4px);
}

.shadow-sm {
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

.shadow-md {
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.transition-all {
  transition-property: all;
  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
  transition-duration: 300ms;
}

.duration-300 {
  transition-duration: 300ms;
}

.h-16 {
  height: 4rem;
}

.flex {
  display: flex;
}

.justify-between {
  justify-content: space-between;
}

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

.space-x-2 > * + * {
  margin-left: 0.5rem;
}

.space-x-4 > * + * {
  margin-left: 1rem;
}

.space-x-8 > * + * {
  margin-left: 2rem;
}

.space-y-3 > * + * {
  margin-top: 0.75rem;
}

.space-y-4 > * + * {
  margin-top: 1rem;
}

.w-8 {
  width: 2rem;
}

.h-8 {
  height: 2rem;
}

.w-6 {
  width: 1.5rem;
}

.h-6 {
  height: 1.5rem;
}

.w-10 {
  width: 2.5rem;
}

.h-10 {
  height: 2.5rem;
}

.w-full {
  width: 100%;
}

.max-w-sm {
  max-width: 24rem;
}

.max-w-lg {
  max-width: 32rem;
}

.max-w-2xl {
  max-width: 42rem;
}

.rounded-full {
  border-radius: 9999px;
}

.rounded-lg {
  border-radius: 0.5rem;
}

.rounded-md {
  border-radius: 0.375rem;
}

.bg-black {
  background-color: #000;
}

.bg-gray-800 {
  background-color: #1f2937;
}

.bg-gray-900 {
  background-color: #111827;
}

.bg-gray-50 {
  background-color: #f9fafb;
}

.bg-gray-100 {
  background-color: #f3f4f6;
}

.bg-gray-200 {
  background-color: #e5e7eb;
}

.bg-white {
  background-color: #fff;
}

.text-white {
  color: #fff;
}

.text-gray-900 {
  color: #111827;
}

.text-gray-800 {
  color: #1f2937;
}

.text-gray-700 {
  color: #374151;
}

.text-gray-600 {
  color: #4b5563;
}

.text-gray-400 {
  color: #9ca3af;
}

.text-gray-300 {
  color: #d1d5db;
}

.text-gray-200 {
  color: #e5e7eb;
}

.text-gray-100 {
  color: #f3f4f6;
}

.text-lg {
  font-size: 1.125rem;
  line-height: 1.75rem;
}

.text-xl {
  font-size: 1.25rem;
  line-height: 1.75rem;
}

.text-2xl {
  font-size: 1.5rem;
  line-height: 2rem;
}

.text-3xl {
  font-size: 1.875rem;
  line-height: 2.25rem;
}

.text-base {
  font-size: 1rem;
  line-height: 1.5rem;
}

.text-sm {
  font-size: 0.875rem;
  line-height: 1.25rem;
}

.text-xs {
  font-size: 0.75rem;
  line-height: 1rem;
}

.font-semibold {
  font-weight: 600;
}

.font-bold {
  font-weight: 700;
}

.font-medium {
  font-weight: 500;
}

.leading-tight {
  line-height: 1.25;
}

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

.px-4 {
  padding-left: 1rem;
  padding-right: 1rem;
}

.px-6 {
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.py-2 {
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
}

.py-4 {
  padding-top: 1rem;
  padding-bottom: 1rem;
}

.p-3 {
  padding: 0.75rem;
}

.p-5 {
  padding: 1.25rem;
}

.p-6 {
  padding: 1.5rem;
}

.mb-1 {
  margin-bottom: 0.25rem;
}

.mb-2 {
  margin-bottom: 0.5rem;
}

.mb-3 {
  margin-bottom: 0.75rem;
}

.mb-4 {
  margin-bottom: 1rem;
}

.mb-6 {
  margin-bottom: 1.5rem;
}

.mb-8 {
  margin-bottom: 2rem;
}

.mt-3 {
  margin-top: 0.75rem;
}

.mt-8 {
  margin-top: 2rem;
}

.gap-1 {
  gap: 0.25rem;
}

.gap-4 {
  gap: 1rem;
}

.gap-8 {
  gap: 2rem;
}

.border-t {
  border-top-width: 1px;
}

.border-gray-800 {
  border-color: #1f2937;
}

.border-white {
  border-color: #fff;
}

.border {
  border-width: 1px;
}

.hidden {
  display: none;
}

.block {
  display: block;
}

.inline-flex {
  display: inline-flex;
}

.flex-col {
  flex-direction: column;
}

.flex-1 {
  flex: 1 1 0%;
}

.overflow-hidden {
  overflow: hidden;
}

.overflow-y-auto {
  overflow-y: auto;
}

.relative {
  position: relative;
}

.absolute {
  position: absolute;
}

.card {
  background-color: var(--card-bg);
  border-radius: var(--border-radius);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  transition: var(--transition);
  overflow: hidden;
  border: 1px solid #f0f0f0;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.btn-primary {
  background-color: var(--primary-color);
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: 500;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
}

.btn-primary:hover {
  background-color: #222222;
  transform: translateY(-2px);
}

.btn-outline {
  border: 1px solid var(--primary-color);
  color: var(--primary-color);
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: 500;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
}

.btn-outline:hover {
  background-color: var(--primary-color);
  color: white;
  transform: translateY(-2px);
}

.nav-link {
  position: relative;
  transition: var(--transition);
  text-decoration: none;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: var(--transition);
}

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

.section-padding {
  padding: 2rem 0;
}

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease;
}

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

.product-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  margin-bottom: 1.5rem;
  background-color: #f0f0f0;
  transition: var(--transition);
}

.product-card:hover .product-icon {
  transform: scale(1.05);
}

.pt-16 {
  padding-top: 4rem;
}

.pt-4 {
  padding-top: 1rem;
}

.pb-4 {
  padding-bottom: 1rem;
}

.h-\[80vh\] {
  height: 80vh;
}

.h-\[calc\(100vh-200px\)\] {
  height: calc(100vh - 200px);
}

.h-screen {
  height: 100vh;
}

.grid {
  display: grid;
}

.grid-cols-1 {
  grid-template-columns: repeat(1, minmax(0, 1fr));
}

.grid-cols-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.gap-4 {
  gap: 1rem;
}

.lg\:w-1\/2 {
  width: 50%;
}

.lg\:w-2\/5 {
  width: 40%;
}

.lg\:w-3\/5 {
  width: 60%;
}

.lg\:w-2\/3 {
  width: 66.666667%;
}

.lg\:mb-0 {
  margin-bottom: 0;
}

.hover\:text-gray-900:hover {
  color: #111827;
}

.hover\:text-black:hover {
  color: #000;
}

.hover\:text-white:hover {
  color: #fff;
}

.hover\:bg-gray-100:hover {
  background-color: #f3f4f6;
}

.hover\:bg-white:hover {
  background-color: #fff;
}

.transition-colors {
  transition-property: color, background-color, border-color;
  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
  transition-duration: 150ms;
}

.focus\:outline-none:focus {
  outline: 2px solid transparent;
  outline-offset: 2px;
}

@media (min-width: 640px) {
  .sm\:px-6 {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }
  
  .sm\:text-4xl {
    font-size: 2.25rem;
    line-height: 2.5rem;
  }
  
  .sm\:flex-row {
    flex-direction: row;
  }
  
  .sm\:space-y-0 > * + * {
    margin-top: 0;
  }
  
  .sm\:space-x-3 > * + * {
    margin-left: 0.75rem;
  }
}

@media (min-width: 768px) {
  .md\:flex {
    display: flex;
  }
  
  .md\:hidden {
    display: none;
  }
  
  .md\:flex-row {
    flex-direction: row;
  }
  
  .md\:mb-0 {
    margin-bottom: 0;
  }
  
  .md\:grid-cols-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  
  .section-padding {
    padding: 3rem 0;
  }
}

@media (min-width: 1024px) {
  .lg\:px-8 {
    padding-left: 2rem;
    padding-right: 2rem;
  }
  
  .lg\:flex {
    display: flex;
  }
  
  .lg\:flex-row {
    flex-direction: row;
  }
  
  .lg\:grid-cols-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  
  .lg\:text-5xl {
    font-size: 3rem;
    line-height: 1;
  }
  
  .lg\:w-1\/2 {
    width: 50%;
  }
  
  .lg\:w-2\/5 {
    width: 40%;
  }
  
  .lg\:w-3\/5 {
    width: 60%;
  }
  
  .lg\:mb-0 {
    margin-bottom: 0;
  }
}