/* 全局重置與基礎樣式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 主題色 */
    --primary-color: #0066ff;
    --primary-dark: #0052cc;
    --primary-light: #3385ff;
    
    /* 輔助色 */
    --secondary-color: #00d4ff;
    --accent-color: #ff6b35;
    
    /* 文本顏色 */
    --text-primary: #2c3e50;
    --text-secondary: #5a6c7d;
    --text-light: #95a5a6;
    
    /* 背景色 */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-dark: #0a0a0a;
    
    /* 邊框與陰影 */
    --border-color: #e0e0e0;
    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 5px 20px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 15px 40px rgba(0, 0, 0, 0.2);
    --shadow-glow: 0 0 30px rgba(0, 102, 255, 0.3);
    
    /* 間距 */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
    
    /* 字體大小 */
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-md: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 24px;
    --font-size-xxl: 36px;
    --font-size-xxxl: 48px;
    
    /* 過渡效果 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

body {
    font-family: 'Noto Sans TC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: var(--font-size-md);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
}

/* 容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* 通用樣式 */
.img-responsive {
    max-width: 100%;
    height: auto;
    display: block;
}

/* 按鈕樣式 */
.btn {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-md);
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width var(--transition-slow), height var(--transition-slow);
    z-index: -1;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.btn-secondary {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

.btn-large {
    padding: var(--spacing-lg) var(--spacing-xxl);
    font-size: var(--font-size-lg);
}

/* 區塊標題 */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
}

.section-title {
    font-size: var(--font-size-xxl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

/* 頁頭導航 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 30px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
}

.logo a {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo-text {
    font-size: var(--font-size-xl);
    font-weight: 900;
    color: var(--primary-color);
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 桌面端導航 */
.nav-desktop {
    display: flex;
    align-items: center;
}

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

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
    padding: var(--spacing-sm) 0;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: width var(--transition-fast);
}

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

/* 移動端菜單按鈕 */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-md);
    z-index: 1001;
}

.menu-icon {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    position: relative;
    transition: background-color var(--transition-fast);
}

.menu-icon::before,
.menu-icon::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    transition: all var(--transition-normal);
}

.menu-icon::before {
    top: -8px;
}

.menu-icon::after {
    top: 8px;
}

.mobile-menu-btn.active .menu-icon {
    background-color: transparent;
}

.mobile-menu-btn.active .menu-icon::before {
    transform: rotate(45deg);
    top: 0;
}

.mobile-menu-btn.active .menu-icon::after {
    transform: rotate(-45deg);
    top: 0;
}

/* 移動端導航 */
.nav-mobile {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    box-shadow: -5px 0 30px rgba(0, 0, 0, 0.15);
    padding-top: 80px;
    transition: right var(--transition-normal);
    z-index: 999;
}

.nav-mobile.active {
    right: 0;
}

.nav-mobile-list {
    list-style: none;
}

.nav-mobile-item {
    border-bottom: 1px solid var(--border-color);
}

.nav-mobile-link {
    display: block;
    padding: var(--spacing-lg);
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.nav-mobile-link:hover {
    background-color: var(--bg-secondary);
    color: var(--primary-color);
    padding-left: calc(var(--spacing-lg) + var(--spacing-sm));
}

/* 移動端導航遮罩 */
.nav-mobile-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 998;
}

.nav-mobile-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* 英雄區域 */
.hero {
    position: relative;
    overflow: hidden;
    padding: calc(var(--spacing-xxl) * 2.5) 0;
    margin-top: 70px;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #16213e 100%);
    color: white;
}

.hero-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: var(--font-size-xxxl);
    font-weight: 900;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-xl);
    font-weight: 300;
}

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

/* 英雄區域背景動畫 */
.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(0, 102, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(255, 107, 53, 0.1) 0%, transparent 50%);
    animation: background-animation 20s ease-in-out infinite;
    z-index: 1;
}

@keyframes background-animation {
    0%, 100% {
        transform: scale(1) translate(0, 0);
    }
    33% {
        transform: scale(1.1) translate(20px, -20px);
    }
    66% {
        transform: scale(0.95) translate(-20px, 20px);
    }
}

/* 關於我們 */
.overview {
    padding: var(--spacing-xxl) 0;
    background-color: var(--bg-primary);
}

.overview-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: center;
}

.overview-text {
    font-size: var(--font-size-lg);
    line-height: 1.8;
    color: var(--text-secondary);
}

.overview-text p {
    margin-bottom: var(--spacing-lg);
}

.overview-image {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transform: translateY(0);
    transition: transform var(--transition-slow);
}

.overview-image:hover {
    transform: translateY(-10px);
}

/* 解決方案 */
.solutions {
    padding: var(--spacing-xxl) 0;
    background-color: var(--bg-secondary);
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.solution-card {
    background-color: var(--bg-primary);
    padding: var(--spacing-xl);
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border: 1px solid transparent;
}

.solution-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.solution-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: transform var(--transition-normal);
}

.solution-card:hover .solution-icon {
    transform: scale(1.1) rotate(5deg);
}

.solution-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.solution-desc {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

/* 產品系列 */
.products {
    padding: var(--spacing-xxl) 0;
    background-color: var(--bg-primary);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.product-card {
    background-color: var(--bg-primary);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    min-height: 100%;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.product-icon {
    width: 100%;
    height: 180px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.product-card:nth-child(2) .product-icon {
    background: linear-gradient(135deg, var(--secondary-color), #00b8d4);
}

.product-card:nth-child(3) .product-icon {
    background: linear-gradient(135deg, var(--accent-color), #ff5722);
}

.product-content {
    padding: var(--spacing-xl);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.product-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.product-desc {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    flex-grow: 1;
}

.product-card .btn {
    margin-top: auto;
    width: 100%;
}

/* 核心功能 */
.features {
    padding: var(--spacing-xxl) 0;
    background-color: var(--bg-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    background-color: var(--bg-primary);
    padding: var(--spacing-xl);
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border: 1px solid transparent;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: transform var(--transition-normal);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
}

.feature-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.feature-desc {
    color: var(--text-secondary);
}

/* 成功案例 */
.case-studies {
    padding: var(--spacing-xxl) 0;
    background-color: var(--bg-primary);
}

.case-studies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.case-card {
    background-color: var(--bg-primary);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
}

.case-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.case-image {
    height: 200px;
    overflow: hidden;
}

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.case-card:hover .case-image img {
    transform: scale(1.1);
}

.case-content {
    padding: var(--spacing-xl);
}

.case-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.case-desc {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

/* 下載區域 */
.download {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #16213e 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.download::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 30% 40%, rgba(0, 102, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 70% 60%, rgba(0, 212, 255, 0.1) 0%, transparent 50%);
}

.download .section-title,
.download .section-subtitle {
    color: white;
    position: relative;
    z-index: 2;
}

.download .section-subtitle {
    color: rgba(255, 255, 255, 0.8);
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    position: relative;
    z-index: 2;
}

.download-card {
    background-color: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    padding: var(--spacing-xl);
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.download-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    background-color: rgba(255, 255, 255, 0.08);
    border-color: var(--primary-color);
}

.download-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: transform var(--transition-normal);
}

.download-card:hover .download-icon {
    transform: scale(1.1) rotate(5deg);
}

.download-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: white;
}

.download-desc {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-xl);
}

.download-card .btn {
    width: 100%;
}

/* 聯絡我們 */
.contact {
    padding: var(--spacing-xxl) 0;
    background-color: var(--bg-primary);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
}

.contact-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.contact-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
}

.contact-desc {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    font-size: var(--font-size-lg);
    line-height: 1.8;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

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

.contact-item .contact-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.contact-text h4 {
    font-size: var(--font-size-md);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.contact-text p {
    color: var(--text-secondary);
    margin: 0;
}

/* 聯絡表單 */
.contact-form .contact-title {
    margin-bottom: var(--spacing-xl);
}

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

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: var(--font-size-md);
    transition: all var(--transition-normal);
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* 頁腳 */
.footer {
    background-color: var(--bg-dark);
    color: white;
    padding: var(--spacing-xxl) 0 var(--spacing-xl);
}

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

.footer-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: white;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-desc {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--spacing-xl);
}

.footer-subtitle {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: white;
}

.footer-link-list {
    list-style: none;
}

.footer-link-list li {
    margin-bottom: var(--spacing-md);
}

.footer-link {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

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

/* 響應式設計 */
@media (max-width: 1024px) {
    :root {
        --font-size-xxxl: 36px;
        --font-size-xxl: 28px;
        --font-size-xl: 20px;
        --spacing-xxl: 32px;
    }
    
    .overview-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .overview-image {
        order: -1;
    }
    
    .case-studies-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
    
    .footer-content {
        grid-template-columns: 2fr 1fr 1fr;
        gap: var(--spacing-xl);
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-xxxl: 28px;
        --font-size-xxl: 24px;
        --font-size-xl: 18px;
        --spacing-xxl: 24px;
    }
    
    .nav-desktop,
    .header-cta {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero {
        padding: calc(var(--spacing-xxl) * 2) 0;
        margin-top: 60px;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .section-title::after {
        width: 40px;
        height: 2px;
    }
    
    .solutions-grid,
    .products-grid,
    .features-grid,
    .download-grid {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
        gap: var(--spacing-lg);
    }
    
    .case-studies-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
}

@media (max-width: 480px) {
    :root {
        --font-size-xxxl: 24px;
        --font-size-xxl: 20px;
        --spacing-xxl: 20px;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .hero {
        padding: calc(var(--spacing-xxl) * 1.5) 0;
    }
    
    .hero-title {
        font-size: var(--font-size-xxl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-md);
    }
    
    .btn {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: var(--font-size-sm);
    }
    
    .btn-large {
        padding: var(--spacing-md) var(--spacing-xl);
        font-size: var(--font-size-md);
    }
    
    .nav-mobile {
        width: 250px;
    }
}

/* 動畫效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* 頁面加載動畫 */
body {
    opacity: 0;
    transition: opacity var(--transition-slow);
}

body.page-loaded {
    opacity: 1;
}

/* 滾動條樣式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
}

/* 列印樣式 */
@media print {
    .header,
    .footer,
    .nav-mobile,
    .mobile-menu-btn,
    .btn {
        display: none;
    }
    
    .container {
        max-width: 100%;
        padding: 0;
    }
    
    .hero,
    .overview,
    .solutions,
    .products,
    .features,
    .case-studies,
    .download,
    .contact {
        padding: var(--spacing-xl) 0;
    }
}