/* Base Styles */
:root {
  --purple-50: #f5f3ff;
  --purple-100: #ede9fe;
  --purple-200: #ddd6fe;
  --purple-300: #c4b5fd;
  --purple-400: #a78bfa;
  --purple-500: #8b5cf6;
  --purple-600: #7c3aed;
  --purple-700: #6d28d9;
  --purple-800: #5b21b6;
  --purple-900: #4c1d95;

  --pink-50: #fdf2f8;
  --pink-100: #fce7f3;
  --pink-200: #fbcfe8;
  --pink-300: #f9a8d4;
  --pink-400: #f472b6;
  --pink-500: #ec4899;
  --pink-600: #db2777;
  --pink-700: #be185d;

  --blue-50: #eff6ff;
  --blue-100: #dbeafe;
  --blue-200: #bfdbfe;
  --blue-300: #93c5fd;
  --blue-400: #60a5fa;
  --blue-500: #3b82f6;
  --blue-600: #2563eb;

  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;

  --green-500: #10b981;
  --yellow-500: #f59e0b;
  --red-500: #ef4444;
  --indigo-500: #6366f1;
  --orange-500: #f97316;
  --teal-500: #14b8a6;
  --cyan-500: #06b6d4;
}

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

body {
  font-family: "Noto Sans SC", Arial, sans-serif;
  color: var(--gray-900);
  line-height: 1.5;
}

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

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

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  font-weight: 500;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-primary {
  background-color: var(--purple-600);
  color: white;
}

.btn-primary:hover {
  background-color: var(--purple-700);
}

.btn-purple {
  background-color: var(--purple-600);
  color: white;
}

.btn-purple:hover {
  background-color: var(--purple-700);
}

.btn-blue {
  background-color: var(--blue-500);
  color: white;
}

.btn-blue:hover {
  background-color: var(--blue-600);
}

.btn-pink {
  background-color: var(--pink-500);
  color: white;
}

.btn-pink:hover {
  background-color: var(--pink-600);
}

.btn-sm {
  padding: 0.25rem 1rem;
  font-size: 0.875rem;
}

.btn-block {
  display: block;
  width: 100%;
}

/* Header */
.header {
  background-color: white;
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  padding: 1rem 0;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.logo-circle {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background: linear-gradient(to right, var(--purple-600), var(--purple-500));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: bold;
  font-size: 1.25rem;
  margin-right: 0.5rem;
}

.logo-text {
  font-weight: bold;
  font-size: 1.25rem;
  color: var(--purple-700);
}

.main-nav {
  display: none;
}

.nav-link {
  color: var(--gray-700);
  margin: 0 1rem;
  transition: color 0.3s ease;
}

.nav-link:hover {
  color: var(--purple-700);
}

.header-actions {
  display: flex;
  align-items: center;
}

.login-link {
  color: var(--gray-700);
  margin-right: 1rem;
  display: none;
}

.login-link:hover {
  color: var(--purple-700);
}

.menu-toggle {
  background: none;
  border: none;
  cursor: pointer;
}

/* Hero Section */
.hero {
  position: relative;
  padding: 4rem 0;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom right, var(--purple-400), var(--pink-300), var(--blue-200));
  opacity: 0.8;
  z-index: -1;
}

.hero-content {
  text-align: center;
  margin-bottom: 3rem;
}

.hero h1 {
  font-size: 2rem;
  font-weight: bold;
  color: white;
  margin-bottom: 1.5rem;
}

.hero h2 {
  font-size: 1.25rem;
  color: white;
  margin-bottom: 2rem;
}

.hero-buttons {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 300px;
  margin: 0 auto;
}

.hero-buttons .btn {
  padding: 0.75rem 2rem;
  font-size: 1.125rem;
}

.hero-showcase {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.showcase-item {
  width: 100%;
}

.showcase-item h3 {
  font-size: 1.25rem;
  font-weight: bold;
  margin-bottom: 1rem;
  color: var(--gray-800);
}

.showcase-item h3 span {
  color: var(--purple-600);
}

.showcase-item p {
  color: var(--gray-700);
  margin-bottom: 1rem;
}

/* Desktop Mockup */
.desktop-mockup {
  background-color: white;
  border-radius: 0.5rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  padding: 1rem;
  margin-bottom: 1rem;
}

.mockup-header {
  background-color: var(--gray-100);
  padding: 0.75rem;
  border-top-left-radius: 0.5rem;
  border-top-right-radius: 0.5rem;
}

.window-controls {
  display: flex;
  gap: 0.5rem;
}

.control {
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
}

.red {
  background-color: var(--red-500);
}

.yellow {
  background-color: var(--yellow-500);
}

.green {
  background-color: var(--green-500);
}

.mockup-content {
  background-color: white;
  padding: 1rem;
  border: 1px solid var(--gray-200);
  border-bottom-left-radius: 0.5rem;
  border-bottom-right-radius: 0.5rem;
}

.mockup-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.mockup-logo {
  display: flex;
  align-items: center;
}

.mini-logo-circle {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background-color: var(--purple-100);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 0.5rem;
}

.mini-logo-circle span {
  color: var(--purple-600);
  font-size: 0.75rem;
  font-weight: bold;
}

.mockup-logo-text {
  width: 5rem;
  height: 1.25rem;
  background-color: var(--gray-100);
  border-radius: 0.25rem;
}

.mockup-menu {
  display: flex;
  gap: 0.75rem;
}

.menu-item {
  width: 3rem;
  height: 1rem;
  background-color: var(--gray-100);
  border-radius: 0.25rem;
}

.mockup-actions {
  display: flex;
  gap: 0.5rem;
}

.action-circle {
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 50%;
  background-color: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
}

.action-dot {
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  background-color: var(--gray-300);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.product-item {
  display: flex;
  flex-direction: column;
}

.product-image {
  width: 100%;
  aspect-ratio: 1;
  background-color: var(--gray-50);
  border-radius: 0.5rem;
  border: 1px solid var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.5rem;
}

.product-icon {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background-color: var(--purple-100);
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-icon img {
  width: 0.75rem;
  height: 0.75rem;
  color: var(--purple-600);
}

.product-title {
  width: 100%;
  height: 0.75rem;
  background-color: var(--gray-100);
  border-radius: 0.25rem;
  margin-bottom: 0.25rem;
}

.product-price {
  width: 66.666667%;
  height: 0.5rem;
  background-color: var(--gray-50);
  border-radius: 0.25rem;
}

.mockup-banner {
  width: 100%;
  height: 8rem;
  background: linear-gradient(to right, var(--purple-50), var(--pink-50));
  border-radius: 0.5rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.banner-content {
  width: 33.333333%;
  height: 4rem;
  background-color: white;
  border-radius: 0.5rem;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
}

.banner-icon {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background-color: var(--purple-100);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 0.5rem;
}

.banner-icon img {
  width: 0.75rem;
  height: 0.75rem;
  color: var(--purple-600);
}

.banner-text {
  width: 4rem;
  height: 0.75rem;
  background-color: var(--gray-100);
  border-radius: 0.25rem;
}

.feature-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

.feature-card {
  width: 100%;
  height: 4rem;
  background-color: var(--gray-50);
  border-radius: 0.5rem;
  border: 1px solid var(--gray-100);
  padding: 0.5rem;
}

.feature-icon {
  display: flex;
  align-items: center;
  margin-bottom: 0.25rem;
}

.feature-icon .feature-dot {
  width: 1.25rem;
  height: 1.25rem;
  border-radius: 50%;
  background-color: var(--purple-100);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 0.25rem;
}

.feature-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background-color: var(--purple-500);
}

.feature-title {
  width: 3rem;
  height: 0.5rem;
  background-color: var(--gray-200);
  border-radius: 0.25rem;
}

.feature-desc {
  width: 100%;
  height: 0.5rem;
  background-color: var(--gray-100);
  border-radius: 0.25rem;
  margin-bottom: 0.25rem;
  margin-top: 0.25rem;
}

.feature-desc-short {
  width: 66.666667%;
  height: 0.5rem;
  background-color: var(--gray-100);
  border-radius: 0.25rem;
}

/* Mobile Mockup */
.mobile-mockup {
  position: relative;
  width: 280px;
  height: 560px;
  background-color: black;
  border-radius: 36px;
  padding: 0.5rem;
  box-shadow: 0 10px 15px rgba(0, 0, 0, 0.2);
  margin: 0 auto;
}

.mobile-notch {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 33.333333%;
  height: 1.5rem;
  background-color: black;
  border-bottom-left-radius: 0.75rem;
  border-bottom-right-radius: 0.75rem;
}

.mobile-screen {
  width: 100%;
  height: 100%;
  background-color: white;
  border-radius: 32px;
  overflow: hidden;
}

.mobile-header {
  background: linear-gradient(to right, var(--purple-600), var(--purple-500));
  height: 4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1rem;
}

.mobile-menu-btn,
.mobile-cart {
  width: 2rem;
  height: 2rem;
  background-color: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mobile-menu-btn img,
.mobile-cart img {
  width: 1rem;
  height: 1rem;
  filter: brightness(0) invert(1);
}

.mobile-logo {
  display: flex;
  align-items: center;
}

.mobile-logo-circle {
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 0.25rem;
}

.mobile-logo-circle span {
  color: white;
  font-size: 0.75rem;
  font-weight: bold;
}

.mobile-logo-text {
  color: white;
  font-size: 0.875rem;
  font-weight: bold;
}

.mobile-content {
  padding: 0.75rem;
}

.mobile-banner {
  width: 100%;
  height: 8rem;
  background: linear-gradient(to right, var(--purple-100), var(--pink-100));
  border-radius: 0.5rem;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mobile-banner .banner-title {
  color: var(--purple-600);
  font-size: 0.75rem;
  font-weight: bold;
  margin-bottom: 0.25rem;
}

.mobile-banner .banner-subtitle {
  color: var(--purple-800);
  font-size: 0.875rem;
  font-weight: bold;
  margin-bottom: 0.25rem;
}

.mobile-banner .banner-button {
  background-color: white;
  color: var(--purple-600);
  font-size: 0.75rem;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  display: inline-block;
}

.mobile-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.mobile-feature {
  width: 100%;
  height: 6rem;
  background-color: var(--purple-50);
  border-radius: 0.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.mobile-feature:nth-child(2) {
  background-color: var(--pink-50);
}

.mobile-feature .feature-icon {
  width: 2.5rem;
  height: 2.5rem;
  background-color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.5rem;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.mobile-feature .feature-icon img {
  width: 1rem;
  height: 1rem;
}

.mobile-feature:first-child .feature-icon img {
  color: var(--purple-600);
}

.mobile-feature:nth-child(2) .feature-icon img {
  color: var(--pink-600);
}

.mobile-feature .feature-name {
  font-size: 0.75rem;
  color: var(--purple-800);
}

.mobile-feature:nth-child(2) .feature-name {
  color: var(--pink-800);
}

.mobile-text-line {
  width: 100%;
  height: 1rem;
  background-color: var(--gray-100);
  border-radius: 0.25rem;
  margin-bottom: 0.5rem;
}

.mobile-text-line.short {
  width: 75%;
  margin-bottom: 0.75rem;
}

.mobile-products {
  width: 100%;
  background-color: var(--gray-50);
  border-radius: 0.5rem;
  margin-bottom: 0.75rem;
  padding: 0.5rem;
}

.products-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.products-title {
  font-size: 0.75rem;
  font-weight: bold;
  color: var(--gray-800);
}

.products-more {
  font-size: 0.75rem;
  color: var(--gray-400);
}

.products-list {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.25rem;
}

.product {
  flex-shrink: 0;
  width: 4rem;
}

.product-img {
  width: 4rem;
  height: 4rem;
  background-color: white;
  border-radius: 0.5rem;
  border: 1px solid var(--gray-100);
  margin-bottom: 0.25rem;
}

.product-title {
  width: 100%;
  height: 0.5rem;
  background-color: var(--gray-200);
  border-radius: 0.25rem;
  margin-bottom: 0.25rem;
}

.product-price {
  width: 66.666667%;
  height: 0.5rem;
  background-color: var(--gray-200);
  border-radius: 0.25rem;
}

.mobile-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 0.5rem;
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.nav-icon {
  width: 1.5rem;
  height: 1.5rem;
  background-color: var(--gray-100);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-icon img {
  width: 0.75rem;
  height: 0.75rem;
  color: var(--gray-400);
}

.nav-text {
  font-size: 0.75rem;
  color: var(--gray-400);
}

.nav-item.active .nav-icon {
  background-color: var(--purple-100);
}

.nav-item.active .nav-icon img {
  color: var(--purple-600);
}

.nav-item.active .nav-text {
  color: var(--purple-600);
}

/* Features Section */
.features {
  padding: 4rem 0;
  background-color: white;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header h2 {
  font-size: 1.5rem;
  font-weight: bold;
  margin-bottom: 1rem;
}

.section-header h2 span {
  color: var(--purple-600);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-bottom: 4rem;
}

.feature-box {
  background-color: white;
  border-radius: 0.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: box-shadow 0.3s ease;
}

.feature-box:hover {
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.feature-icon {
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.5rem;
}

.feature-icon img {
  width: 1.5rem;
  height: 1.5rem;
}

.feature-icon.purple {
  background-color: var(--purple-50);
}

.feature-icon.blue {
  background-color: var(--blue-50);
}

.feature-icon.green {
  background-color: var(--green-50);
}

.feature-icon.yellow {
  background-color: var(--yellow-50);
}

.feature-icon.red {
  background-color: var(--red-50);
}

.feature-icon.indigo {
  background-color: var(--indigo-50);
}

.feature-icon.pink {
  background-color: var(--pink-50);
}

.feature-icon.orange {
  background-color: var(--orange-50);
}

.feature-icon.teal {
  background-color: var(--teal-50);
}

.feature-icon.cyan {
  background-color: var(--cyan-50);
}

.feature-box p {
  font-size: 0.875rem;
  text-align: center;
  font-weight: 500;
}

/* Dark Features Section */
.dark-features {
  padding: 4rem 0;
  background-color: var(--gray-900);
  color: white;
}

.dark-features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.dark-features-header h3 {
  font-size: 1.25rem;
  font-weight: bold;
  margin-bottom: 0.5rem;
}

.dark-features-header p {
  color: var(--gray-400);
}

.dark-features-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.dark-feature {
  font-size: 0.875rem;
  text-align: center;
  transition: color 0.3s ease;
  cursor: pointer;
}

.dark-feature:hover {
  color: var(--purple-300);
}

.dark-features-cta {
  text-align: center;
}

/* Comparison Section */
.comparison {
  padding: 4rem 0;
  background-color: var(--gray-100);
}

.comparison h2 {
  font-size: 1.5rem;
  font-weight: bold;
  text-align: center;
  margin-bottom: 3rem;
}

.comparison-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 4rem;
}

.comparison-card {
  background-color: white;
  border-radius: 0.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  padding: 1.5rem;
  transition: box-shadow 0.3s ease;
}

.comparison-card:hover {
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.card-header {
  display: flex;
  align-items: center;
  margin-bottom: 1rem;
}

.card-icon {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background-color: var(--purple-100);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 0.75rem;
}

.card-icon img {
  width: 1.5rem;
  height: 1.5rem;
  color: var(--purple-600);
}

.card-header h3 {
  font-size: 1.125rem;
  font-weight: bold;
}

.card-features {
  margin-top: 0.5rem;
}

.card-feature {
  display: flex;
  align-items: center;
  margin-bottom: 0.5rem;
}

.card-feature img {
  width: 1rem;
  height: 1rem;
  color: var(--purple-600);
  margin-right: 0.5rem;
}

.card-feature p {
  font-size: 0.875rem;
  color: var(--gray-700);
}

/* Feature Cards Section */
.feature-cards-section {
  padding: 4rem 0;
  background-color: white;
}

.feature-cards-section h2 {
  font-size: 1.5rem;
  font-weight: bold;
  text-align: center;
  margin-bottom: 3rem;
}

.feature-cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.feature-cards-grid .feature-card {
  border-radius: 0.5rem;
  padding: 1.5rem;
  color: white;
  height: auto;
  transition: box-shadow 0.3s ease;
}

.feature-cards-grid .feature-card:hover {
  box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
}

.feature-cards-grid .feature-card.purple {
  background: linear-gradient(to bottom right, var(--purple-600), var(--purple-700));
}

.feature-cards-grid .feature-card.pink {
  background: linear-gradient(to bottom right, var(--pink-500), var(--pink-600));
}

.feature-cards-grid .feature-card.light-purple {
  background: linear-gradient(to bottom right, var(--purple-400), var(--purple-500));
}

.feature-cards-grid .card-icon {
  width: 3rem;
  height: 3rem;
  background-color: rgba(255, 255, 255, 0.2);
  margin-bottom: 1rem;
  margin-right: 0;
}

.feature-cards-grid .card-icon img {
  width: 1.5rem;
  height: 1.5rem;
  filter: brightness(0) invert(1);
}

.feature-cards-grid h3 {
  font-size: 1.25rem;
  font-weight: bold;
  margin-bottom: 1rem;
}

.feature-cards-grid p {
  margin-bottom: 1rem;
}

.feature-cards-grid .card-btn {
  display: inline-block;
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  border: 1px solid white;
  color: white;
  transition: background-color 0.3s ease;
}

.feature-cards-grid .card-btn:hover {
  background-color: rgba(255, 255, 255, 0.2);
}

/* App Features Section */
.app-features {
  padding: 4rem 0;
  background-color: var(--gray-100);
}

.app-features h2 {
  font-size: 1.5rem;
  font-weight: bold;
  text-align: center;
  margin-bottom: 3rem;
}

.app-features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 4rem;
}

.app-feature {
  background-color: var(--purple-50);
  border-radius: 0.5rem;
  padding: 1.5rem;
  text-align: center;
  transition: box-shadow 0.3s ease;
}

.app-feature:hover {
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.app-feature:nth-child(2) {
  background-color: var(--blue-50);
}

.app-feature:nth-child(3) {
  background-color: var(--pink-50);
}

.app-icon {
  background-color: white;
  width: 4rem;
  height: 4rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.app-icon span {
  font-size: 1.25rem;
  font-weight: bold;
}

.app-icon .wechat {
  color: var(--green-500);
}

.app-icon .alipay {
  color: var(--blue-500);
}

.app-icon .douyin {
  color: var(--pink-500);
}

.app-feature h3 {
  font-size: 1.125rem;
  font-weight: bold;
  margin-bottom: 0.5rem;
}

.app-feature p {
  font-size: 0.875rem;
  color: var(--gray-700);
  margin-bottom: 1rem;
}

/* App Icons Section */
.app-icons {
  padding: 4rem 0;
  background-color: white;
}

.app-icons h2 {
  font-size: 1.5rem;
  font-weight: bold;
  text-align: center;
  margin-bottom: 1rem;
}

.section-desc {
  text-align: center;
  color: var(--gray-700);
  margin-bottom: 2rem;
}

.icons-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 3rem;
}

.icon-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.icon-circle {
  width: 3rem;
  height: 3rem;
  background-color: var(--gray-100);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.5rem;
  transition: background-color 0.3s ease;
}

.icon-circle:hover {
  background-color: var(--gray-200);
}

.icon-circle img {
  width: 1.25rem;
  height: 1.25rem;
  color: var(--gray-600);
}

.icon-item p {
  font-size: 0.75rem;
  text-align: center;
}

/* Pricing Cards Section */
.pricing {
  padding: 4rem 0;
  background-color: white;
}

.pricing h2 {
  font-size: 1.5rem;
  font-weight: bold;
  text-align: center;
  margin-bottom: 3rem;
}

.pricing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 4rem;
}

.pricing-card {
  background-color: white;
  border-radius: 0.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  transition: box-shadow 0.3s ease;
}

.pricing-card:hover {
  box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
}

.card-header {
  padding: 1rem;
  color: white;
  text-align: center;
}

.card-header.purple {
  background: linear-gradient(to bottom right, var(--purple-600), var(--purple-700));
}

.card-header.pink {
  background: linear-gradient(to bottom right, var(--pink-500), var(--pink-600));
}

.card-header.blue {
  background: linear-gradient(to bottom right, var(--blue-500), var(--blue-600));
}

.card-header.light-purple {
  background: linear-gradient(to bottom right, var(--purple-400), var(--purple-500));
}

.card-header h3 {
  font-size: 1.25rem;
  font-weight: bold;
}

.card-body {
  padding: 1.5rem;
}

.price {
  font-size: 1.875rem;
  font-weight: bold;
  text-align: center;
  margin-bottom: 1rem;
}

.features-list {
  margin-bottom: 1.5rem;
}

.features-list li {
  font-size: 0.875rem;
  color: var(--gray-700);
  margin-bottom: 0.5rem;
}

/* Business Section */
.business {
  padding: 4rem 0;
  background-color: var(--gray-100);
}

.business h2 {
  font-size: 1.5rem;
  font-weight: bold;
  text-align: center;
  margin-bottom: 3rem;
}

.business-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-bottom: 4rem;
}

.business-card {
  background-color: white;
  border-radius: 0.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  padding: 1.5rem;
  transition: box-shadow 0.3s ease;
}

.business-card:hover {
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.business-card h3 {
  font-size: 1.125rem;
  font-weight: bold;
  margin-bottom: 1rem;
}

.business-card p {
  color: var(--gray-700);
  margin-bottom: 1rem;
}

.more-link {
  display: flex;
  align-items: center;
  color: var(--purple-600);
}

.more-link span {
  margin-right: 0.5rem;
}

.more-link img {
  width: 1rem;
  height: 1rem;
}

/* Case Studies Section */
.case-studies {
  padding: 4rem 0;
  background-color: white;
}

.case-studies h2 {
  font-size: 1.5rem;
  font-weight: bold;
  text-align: center;
  margin-bottom: 3rem;
}

.case-studies-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.case-study {
  background-color: white;
  border-radius: 0.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  transition: box-shadow 0.3s ease;
}

.case-study:hover {
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.case-image {
  width: 100%;
  height: 12rem;
  background: linear-gradient(to right, var(--purple-100), var(--pink-100));
  display: flex;
  align-items: center;
  justify-content: center;
}

.case-icon {
  width: 6rem;
  height: 6rem;
  background-color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.case-icon img {
  width: 2rem;
  height: 2rem;
  color: var(--purple-600);
}

.case-content {
  padding: 1rem;
}

.case-content h3 {
  font-size: 1.125rem;
  font-weight: bold;
  margin-bottom: 0.5rem;
}

.case-content p {
  font-size: 0.875rem;
  color: var(--gray-700);
}

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

/* Team Section */
.team {
  padding: 4rem 0;
  background-color: var(--gray-900);
  color: white;
}

.team h2 {
  font-size: 1.5rem;
  font-weight: bold;
  text-align: center;
  margin-bottom: 3rem;
}

.team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-bottom: 3rem;
}

.team-member {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.member-icon {
  width: 4rem;
  height: 4rem;
  background-color: rgba(124, 58, 237, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}

.member-icon img {
  width: 2rem;
  height: 2rem;
  filter: brightness(0) invert(1);
}

.team-member h3 {
  font-size: 1.125rem;
  font-weight: bold;
  margin-bottom: 0.5rem;
}

.team-member p {
  font-size: 0.875rem;
  color: var(--gray-400);
  text-align: center;
}

/* QR Code Section */
.qr-code {
  padding: 4rem 0;
  background: linear-gradient(to bottom right, var(--purple-400), var(--pink-300), var(--blue-200));
}

.qr-title {
  font-size: 1.125rem;
  text-align: center;
  margin-bottom: 1rem;
}

.qr-container {
  background-color: white;
  display: inline-block;
  padding: 1rem;
  border-radius: 0.5rem;
  margin: 0 auto 1rem;
  display: flex;
  justify-content: center;
}

.qr-code-box {
  width: 8rem;
  height: 8rem;
  background-color: white;
  border: 1px solid var(--gray-200);
  position: relative;
}

.qr-pattern {
  position: absolute;
  inset: 0.5rem;
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  grid-template-rows: repeat(7, 1fr);
}

.qr-corner {
  width: 100%;
  height: 100%;
  background-color: black;
  border-radius: 0.5rem;
}

.top-left {
  grid-column: 1 / span 3;
  grid-row: 1 / span 3;
}

.top-right {
  grid-column: 5 / span 3;
  grid-row: 1 / span 3;
}

.bottom-left {
  grid-column: 1 / span 3;
  grid-row: 5 / span 3;
}

.qr-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 1.25rem;
  height: 1.25rem;
  background-color: black;
}

.qr-desc {
  font-size: 0.875rem;
  text-align: center;
}

/* Footer */
.footer {
  padding: 3rem 0;
  background-color: var(--gray-900);
  color: white;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-about {
  grid-column: span 2;
}

.footer-logo {
  display: flex;
  align-items: center;
  margin-bottom: 1rem;
}

.footer-about p {
  color: var(--gray-400);
  margin-bottom: 1rem;
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-icon {
  width: 2rem;
  height: 2rem;
  background-color: var(--gray-800);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-400);
  transition: color 0.3s ease;
}

.social-icon:hover {
  color: white;
}

.footer-links h3,
.footer-contact h3 {
  font-weight: bold;
  margin-bottom: 1rem;
}

.footer-links ul,
.footer-contact ul {
  color: var(--gray-400);
}

.footer-links li,
.footer-contact li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  transition: color 0.3s ease;
}

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

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--gray-800);
  text-align: center;
}

.footer-bottom p {
  font-size: 0.875rem;
  color: var(--gray-400);
}

/* Media Queries */
@media (min-width: 640px) {
  .hero-buttons {
    flex-direction: row;
    max-width: none;
  }

  .icons-grid {
    grid-template-columns: repeat(6, 1fr);
  }
}

@media (min-width: 768px) {
  .main-nav {
    display: flex;
  }

  .login-link {
    display: block;
  }

  .menu-toggle {
    display: none;
  }

  .hero h1 {
    font-size: 3rem;
  }

  .hero h2 {
    font-size: 1.5rem;
  }

  .hero-showcase {
    flex-direction: row;
  }

  .showcase-item {
    width: 50%;
  }

  .features-grid {
    grid-template-columns: repeat(5, 1fr);
  }

  .dark-features-grid {
    grid-template-columns: 1fr 4fr;
  }

  .dark-features-list {
    grid-template-columns: repeat(4, 1fr);
  }

  .comparison-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .feature-cards-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .app-features-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .icons-grid {
    grid-template-columns: repeat(9, 1fr);
  }

  .pricing-grid {
    grid-template-columns: repeat(4, 1fr);
  }

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

  .case-studies-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .team-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  }

  .footer-about {
    grid-column: span 1;
  }
}