:root {
  --primary-color: #2563eb;
  --secondary-color: #1e40af;
  --accent-color: #0ea5e9;
  --success-color: #059669;
  --warning-color: #f59e0b;
  --danger-color: #dc2626;
  --background-light: #ffffff;
  --background-gray: #f8fafc;
  --background-dark: #0f172a;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --text-light: #ffffff;
  --border-color: #e2e8f0;
  --border-light: #f1f5f9;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 20px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  background: var(--background-light);
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 全局動畫 */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.8;
  }
}

/* 通用樣式 */
a {
  text-decoration: none;
  color: inherit;
  transition: all 0.2s ease;
}

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 按鈕樣式 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-size: 14px;
  font-weight: 500;
  line-height: 1.2;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition: all 0.2s ease;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  box-shadow: var(--shadow-sm);
}

.btn-primary {
  background: var(--primary-color);
  color: var(--text-light);
  border-color: var(--primary-color);
  box-shadow: 0 2px 4px rgb(37 99 235 / 0.2), var(--shadow-sm);
}

.btn-primary:hover {
  background: var(--secondary-color);
  border-color: var(--secondary-color);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgb(37 99 235 / 0.3), var(--shadow-md);
}

.btn-outline {
  background: transparent;
  color: var(--primary-color);
  border-color: var(--primary-color);
  box-shadow: 0 2px 4px rgb(37 99 235 / 0.1), var(--shadow-sm);
}

.btn-outline:hover {
  background: var(--primary-color);
  color: var(--text-light);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgb(37 99 235 / 0.3), var(--shadow-md);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: none;
  padding: 8px 16px;
  box-shadow: 0 1px 2px rgb(0 0 0 / 0.05);
}

.btn-ghost:hover {
  background: var(--background-gray);
  color: var(--primary-color);
  transform: translateY(-1px);
  box-shadow: 0 2px 6px rgb(0 0 0 / 0.1);
}

.btn-link {
  background: transparent;
  color: var(--primary-color);
  border: none;
  padding: 4px 8px;
  font-weight: 500;
  text-decoration: underline;
  text-underline-offset: 2px;
  box-shadow: none;
}

.btn-link:hover {
  color: var(--secondary-color);
  text-decoration: none;
  box-shadow: none;
}

/* 按鈕尺寸 */
.btn-xs {
  padding: 4px 8px;
  font-size: 12px;
  border-radius: var(--radius-sm);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
  border-radius: var(--radius-sm);
}

.btn-md {
  padding: 8px 16px;
  font-size: 13px;
  border-radius: var(--radius-md);
}

.btn-lg {
  padding: 16px 32px;
  font-size: 16px;
}

.btn-xl {
  padding: 20px 40px;
  font-size: 18px;
  border-radius: var(--radius-lg);
}

/* 圓形按鈕 */
.btn-circle {
  border-radius: 50%;
  padding: 8px;
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-circle.btn-sm {
  width: 28px;
  height: 28px;
  padding: 6px;
}

.btn-circle.btn-lg {
  width: 48px;
  height: 48px;
  padding: 12px;
}

/* 圖示按鈕 */
.btn-icon {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-icon-only {
  padding: 8px;
  width: 36px;
  height: 36px;
  justify-content: center;
}

/* 按鈕組 */
.btn-group {
  display: inline-flex;
  gap: 8px;
  align-items: center;
}

.btn-group-attached {
  display: inline-flex;
  gap: 0;
}

.btn-group-attached .btn {
  border-radius: 0;
  border-right-width: 0;
}

.btn-group-attached .btn:first-child {
  border-top-left-radius: var(--radius-md);
  border-bottom-left-radius: var(--radius-md);
}

.btn-group-attached .btn:last-child {
  border-top-right-radius: var(--radius-md);
  border-bottom-right-radius: var(--radius-md);
  border-right-width: 1px;
}

/* 特殊狀態按鈕 */
.btn-loading {
  position: relative;
  color: transparent;
  pointer-events: none;
}

.btn-loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 16px;
  height: 16px;
  margin: -8px 0 0 -8px;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.btn:disabled,
.btn-disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* 頁首設計 */
header.site-header {
  background: var(--background-light);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
  animation: fadeIn 0.6s ease-out;
}

/* Logo 區域 */
.logo-area a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  transition: opacity 0.2s ease;
}

.logo-area a:hover {
  opacity: 0.8;
}

.logo-area img {
  height: 40px;
  width: 40px;
  border-radius: 0%;
  object-fit: cover;
}

.company-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

/* 導覽選單 */
nav.main-nav ul {
  list-style: none;
  display: flex;
  gap: 8px;
  align-items: center;
}

nav.main-nav li {
  position: relative;
}

nav.main-nav a {
  display: block;
  padding: 8px 16px;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 14px;
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
}

nav.main-nav a:hover,
nav.main-nav a:focus {
  color: var(--primary-color);
  background: var(--background-gray);
}

/* 子選單 */
.submenu {
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: 8px;
  background: var(--background-light);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all 0.2s ease;
  z-index: 100;
  min-width: 200px;
}

nav.main-nav li:hover > .submenu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.submenu.multi-column {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  min-width: 600px;
  padding: 24px;
}

.submenu-group {
  display: flex;
  flex-direction: column;
  padding: 0 16px;
}

.group-title {
  font-weight: 600;
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.submenu-group ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.submenu-group ul li a {
  padding: 8px 12px;
  color: var(--text-primary);
  font-size: 14px;
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
}

.submenu-group ul li a:hover {
  color: var(--primary-color);
  background: var(--background-gray);
}

/* 漢堡選單 */
.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-md);
  transition: background 0.2s ease;
}

.hamburger:hover {
  background: var(--background-gray);
}

.hamburger span {
  height: 2px;
  width: 24px;
  background: var(--text-primary);
  margin-bottom: 4px;
  border-radius: 1px;
  transition: all 0.2s ease;
}

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

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

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* Hero 區塊 */
.hero {
  background: var(--background-light);
  padding: 80px 0 120px;
  text-align: center;
  position: relative;
}

.hero .container {
  animation: slideUp 0.8s ease-out;
}

.hero h1 {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.1;
  color: var(--text-primary);
  margin-bottom: 24px;
  letter-spacing: -0.02em;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.hero p {
  font-size: 20px;
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

.hero .btn {
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 500;
  background: var(--primary-color);
  color: var(--text-light);
  border: 1px solid var(--primary-color);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all 0.2s ease;
  display: inline-block;
  box-shadow: 0 2px 4px rgb(37 99 235 / 0.2), var(--shadow-sm);
}

.hero .btn:hover {
  background: var(--secondary-color);
  border-color: var(--secondary-color);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgb(37 99 235 / 0.3), var(--shadow-md);
}

/* 通用區塊 */
section {
  padding: 80px 0;
}

h2 {
  font-size: 36px;
  font-weight: 700;
  color: var(--text-primary);
  text-align: center;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.section-content {
  max-width: 1000px;
  margin: 0 auto;
  text-align: center;
  animation: fadeIn 0.8s ease-out;
}

.section-content > p {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 64px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* 功能特色區塊 */
.features {
  background: var(--background-gray);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-top: 64px;
}

.feature-item {
  background: var(--background-light);
  padding: 40px 32px;
  border-radius: var(--radius-xl);
  text-align: center;
  transition: all 0.3s ease;
  border: 1px solid var(--border-light);
  animation: fadeIn 0.8s ease-out;
}

.feature-item:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--border-color);
}

.feature-item img {
  width: 80px;
  height: 80px;
  margin-bottom: 24px;
  border-radius: var(--radius-lg);
  object-fit: contain;
  background: var(--background-gray);
  padding: 16px;
}

.feature-item h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
  line-height: 1.3;
}

.feature-item p {
  color: var(--text-secondary);
  line-height: 1.6;
  font-size: 14px;
}

/* 聯絡表單 */
.contact-form {
  background: var(--background-light);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-2xl);
  padding: 48px;
  max-width: 800px;
  margin: 0 auto;
  box-shadow: var(--shadow-lg);
  animation: fadeIn 0.8s ease-out;
}

.contact-form h2 {
  margin-bottom: 32px;
  text-align: center;
}

.contact-form form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.contact-form .full-width {
  grid-column: span 2;
}

.contact-form label {
  display: block;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 8px;
  font-size: 14px;
}

.contact-form input,
.contact-form textarea,
.contact-form select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 14px;
  background: var(--background-light);
  color: var(--text-primary);
  transition: all 0.2s ease;
  font-family: inherit;
}

.contact-form input:focus,
.contact-form textarea:focus,
.contact-form select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgb(37 99 235 / 0.1);
}

.contact-form fieldset {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  background: var(--background-gray);
}

.contact-form fieldset legend {
  font-weight: 500;
  color: var(--text-primary);
  padding: 0 12px;
  font-size: 14px;
}

.contact-form .checkbox-group {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  margin-top: 12px;
}

.contact-form .checkbox-group label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  padding: 8px 12px;
  border-radius: var(--radius-md);
  transition: background 0.2s ease;
  font-weight: normal;
}

.contact-form .checkbox-group label:hover {
  background: var(--background-light);
}

.contact-form .checkbox-group input[type="checkbox"] {
  width: 16px;
  height: 16px;
  margin: 0;
  accent-color: var(--primary-color);
}

.contact-form .checkbox-single {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  background: rgb(239 68 68 / 0.05);
  border: 1px solid rgb(239 68 68 / 0.2);
  border-radius: var(--radius-lg);
  margin-top: 24px;
}

.contact-form .checkbox-single input[type="checkbox"] {
  width: 16px;
  height: 16px;
  margin: 0;
}

.contact-form .submit-btn-container {
  display: flex;
  justify-content: center;
  margin-top: 32px;
}

.contact-form .submit-btn {
  padding: 16px 48px;
  font-size: 16px;
  font-weight: 600;
  background: var(--primary-color);
  color: var(--text-light);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 2px 4px rgb(37 99 235 / 0.2), var(--shadow-sm);
}

.contact-form .submit-btn:hover {
  background: var(--secondary-color);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgb(37 99 235 / 0.3), var(--shadow-lg);
}

.required {
  color: var(--danger-color);
  margin-right: 4px;
}

/* 產業搜索下拉選單 */
.industry-search-container {
  position: relative;
  width: 100%;
}

.industry-search {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 14px;
  background: var(--background-light);
  color: var(--text-primary);
  transition: all 0.2s ease;
}

.industry-search:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgb(37 99 235 / 0.1);
}

.industry-select {
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  max-height: 200px;
  overflow-y: auto;
  background: var(--background-light);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 10;
  display: none;
  margin-top: 4px;
}

.industry-select option {
  padding: 12px 16px;
  color: var(--text-primary);
  background: var(--background-light);
  border-bottom: 1px solid var(--border-light);
  cursor: pointer;
  transition: background 0.2s ease;
}

.industry-select option:hover {
  background: var(--background-gray);
}

.industry-select option:last-child {
  border-bottom: none;
}

/* 關於我們頁面 */
.about-section .about-grid {
  display: flex;
  flex-direction: column;
  gap: 48px;
  text-align: left;
  max-width: 800px;
  margin: 0 auto;
}

.about-section .about-block {
  background: var(--background-light);
  padding: 40px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
  animation: fadeIn 0.8s ease-out;
}

.about-section .about-block:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.about-section .about-block h3 {
  font-size: 24px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
  line-height: 1.3;
}

.about-section .about-block p {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.about-section .about-block p:last-child {
  margin-bottom: 0;
}

.about-section .back-home {
  text-align: center;
  margin-top: 48px;
}

.about-section .back-home .btn {
  padding: 12px 24px;
  font-size: 14px;
  font-weight: 500;
  background: var(--primary-color);
  color: var(--text-light);
  border: 1px solid var(--primary-color);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all 0.2s ease;
  display: inline-block;
  box-shadow: 0 2px 4px rgb(37 99 235 / 0.2), var(--shadow-sm);
}

.about-section .back-home .btn:hover {
  background: var(--secondary-color);
  border-color: var(--secondary-color);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgb(37 99 235 / 0.3), var(--shadow-md);
}

/* 產品頁面 */
.product-section,
.integration-section,
.marketing-section,
.shop-section {
  background: var(--background-light);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-2xl);
  padding: 64px;
  max-width: 900px;
  margin: 48px auto;
  box-shadow: var(--shadow-lg);
  animation: fadeIn 0.8s ease-out;
}

.product-section h2,
.integration-section h2,
.marketing-section h2,
.shop-section h2 {
  text-align: left;
  margin-bottom: 24px;
}

.product-section p,
.integration-section p,
.marketing-section p,
.shop-section p {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
  text-align: left;
}

.product-section div,
.integration-section div,
.marketing-section div,
.shop-section div {
  margin-top: 32px;
}

/* 頁尾 */
footer.site-footer {
  background: var(--background-gray);
  border-top: 1px solid var(--border-color);
  color: var(--text-secondary);
  text-align: center;
  padding: 48px 0;
  margin-top: 80px;
}

footer.site-footer div {
  margin-bottom: 24px;
}

footer img {
  transition: all 0.2s ease;
  border-radius: var(--radius-md);
}

footer img:hover {
  transform: scale(1.05);
  opacity: 0.8;
}

.privacy-link {
  color: var(--text-secondary);
  transition: color 0.2s ease;
  font-size: 14px;
}

.privacy-link:hover {
  color: var(--primary-color);
}

/* 錯誤與成功訊息 */
.error-message {
  background: rgb(239 68 68 / 0.1);
  border: 1px solid rgb(239 68 68 / 0.3);
  color: var(--danger-color);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 14px;
  margin-top: 8px;
  animation: fadeIn 0.3s ease-out;
}

.success-message {
  background: rgb(5 150 105 / 0.1);
  border: 1px solid rgb(5 150 105 / 0.3);
  color: var(--success-color);
  padding: 16px 24px;
  border-radius: var(--radius-lg);
  text-align: center;
  margin: 24px 0;
  animation: fadeIn 0.5s ease-out;
}

/* 重新設計：AI 比較圖片區塊 - 更美觀版本 */
.ai-comparison {
  background: linear-gradient(135deg, #f5f3f0 0%, #ede8e3 100%);
  padding: 100px 0;
  position: relative;
  overflow: hidden;
}

.ai-comparison::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><circle cx="200" cy="200" r="2" fill="rgba(139,127,115,0.15)"/><circle cx="600" cy="400" r="2" fill="rgba(139,127,115,0.15)"/><circle cx="800" cy="600" r="2" fill="rgba(139,127,115,0.15)"/></svg>') repeat;
  opacity: 0.6;
  pointer-events: none;
}

.ai-comparison .section-content {
  max-width: 1400px;
  position: relative;
  z-index: 2;
}

.comparison-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  margin-top: 64px;
  align-items: center;
}

.showcase-image {
  position: relative;
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: 0 25px 50px -12px rgb(139 127 115 / 0.3);
  transition: all 0.4s ease;
  background: #ffffff;
  border: 1px solid rgba(139, 127, 115, 0.1);
}

.showcase-image:hover {
  transform: translateY(-12px) scale(1.02);
  box-shadow: 0 35px 70px -12px rgb(139 127 115 / 0.4);
}

.showcase-image img {
  width: 100%;
  height: auto;
  display: block;
  transition: all 0.4s ease;
}

.showcase-content {
  padding: 0 24px;
}

.showcase-content h3 {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 24px;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.showcase-content p {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 32px;
}

.feature-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 32px;
}

.feature-tag {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--text-light);
  padding: 8px 16px;
  border-radius: var(--radius-xl);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  box-shadow: var(--shadow-sm);
}

.showcase-item:nth-child(even) .comparison-showcase {
  grid-template-columns: 1fr 1fr;
}

.showcase-item:nth-child(even) .showcase-image {
  order: 2;
}

.showcase-item:nth-child(even) .showcase-content {
  order: 1;
}

.showcase-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(139, 127, 115, 0.2), transparent);
  margin: 80px 0;
}

/* 統計數字區塊 */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
  margin-top: 64px;
  padding: 48px 0;
}

.stat-item {
  text-align: center;
  padding: 32px 24px;
  background: rgba(255, 255, 255, 0.7);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(139, 127, 115, 0.15);
  transition: all 0.3s ease;
  animation: fadeIn 0.8s ease-out;
  backdrop-filter: blur(10px);
}

.stat-item:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px -12px rgb(139 127 115 / 0.3);
  border-color: var(--primary-color);
  background: rgba(255, 255, 255, 0.9);
}

.stat-number {
  font-size: 36px;
  font-weight: 800;
  color: var(--primary-color);
  margin-bottom: 8px;
  line-height: 1;
}

.stat-label {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
}

/* 響應式設計 */
@media (max-width: 1024px) {
  .comparison-showcase {
    gap: 60px;
  }
  
  .showcase-content h3 {
    font-size: 28px;
  }
  
  .showcase-content p {
    font-size: 16px;
  }
}

@media (max-width: 768px) {
  .ai-comparison {
    padding: 80px 0;
  }
  
  .comparison-showcase {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }
  
  .showcase-item:nth-child(even) .comparison-showcase {
    grid-template-columns: 1fr;
  }
  
  .showcase-item:nth-child(even) .showcase-image,
  .showcase-item:nth-child(even) .showcase-content {
    order: unset;
  }
  
  .showcase-content {
    padding: 0;
  }
  
  .showcase-content h3 {
    font-size: 24px;
    margin-bottom: 16px;
  }
  
  .showcase-content p {
    font-size: 16px;
    margin-bottom: 24px;
  }
  
  .feature-highlights {
    justify-content: center;
    margin-bottom: 24px;
  }
  
  .stats-grid {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 24px;
    margin-top: 48px;
  }
  
  .stat-item {
    padding: 24px 16px;
  }
  
  .stat-number {
    font-size: 28px;
  }
}
@media (max-width: 1024px) {
  .hero h1 {
    font-size: 40px;
  }
  
  .features-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
  }
  
  .contact-form {
    padding: 32px;
  }
  
  .submenu.multi-column {
    grid-template-columns: repeat(2, 1fr);
    min-width: 400px;
    padding: 20px;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }
  
  .hero {
    padding: 60px 0 80px;
  }
  
  .hero h1 {
    font-size: 32px;
    margin-bottom: 16px;
  }
  
  .hero p {
    font-size: 18px;
    margin-bottom: 32px;
  }
  
  h2 {
    font-size: 28px;
  }
  
  section {
    padding: 60px 0;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  
  .feature-item {
    padding: 32px 24px;
  }
  
  .contact-form {
    padding: 24px;
    margin: 16px;
  }
  
  .contact-form form {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .contact-form .full-width {
    grid-column: span 1;
  }
  
  .contact-form .checkbox-group {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  
  /* 行動版導覽 */
  nav.main-nav ul {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--background-light);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    padding: 16px;
    min-width: 200px;
    flex-direction: column;
    gap: 4px;
    animation: fadeIn 0.2s ease-out;
  }
  
  nav.main-nav ul.active {
    display: flex;
  }
  
  .hamburger {
    display: flex;
  }
  
  .submenu.multi-column {
    display: none;
  }
  
  .about-section .about-block {
    padding: 24px;
  }
  
  .product-section,
  .integration-section,
  .marketing-section,
  .shop-section {
    padding: 32px 24px;
    margin: 24px 16px;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 28px;
    line-height: 1.2;
  }
  
  .hero p {
    font-size: 16px;
  }
  
  .btn-lg {
    padding: 14px 24px;
    font-size: 14px;
  }
  
  .feature-item img {
    width: 64px;
    height: 64px;
    padding: 12px;
  }
  
  .contact-form {
    padding: 20px;
  }
  
  h2 {
    font-size: 24px;
  }
  
  .logo-area img {
    height: 32px;
    width: 32px;
  }
  
  .company-name {
    font-size: 18px;
  }
}