/* ==========================================
   Cretak Bot X 主样式表
   现代化、专业、响应式设计
   ========================================== */

/* 全局变量 */
:root {
    /* 主色调 */
    --primary-color: #0066FF;
    --primary-dark: #0052CC;
    --primary-light: #3385FF;
    
    /* 辅助色 */
    --secondary-color: #FF6B35;
    --accent-color: #00D9FF;
    
    /* 中性色 */
    --dark: #1A1A1A;
    --dark-gray: #2D2D2D;
    --gray: #666666;
    --light-gray: #CCCCCC;
    --bg-light: #F5F5F5;
    --white: #FFFFFF;
    
    /* 渐变 */
    --gradient-primary: linear-gradient(135deg, #0066FF 0%, #00D9FF 100%);
    --gradient-dark: linear-gradient(135deg, #1A1A1A 0%, #2D2D2D 100%);
    
    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.25);
    
    /* 字体 */
    --font-primary: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    --font-mono: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", Consolas, monospace;
    
    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-primary);
    color: var(--dark);
    line-height: 1.6;
    overflow-x: hidden;
    background-color: var(--white);
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-fast);
}

ul, ol {
    list-style: none;
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
    transition: var(--transition-fast);
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition-normal);
}

.navbar.scrolled {
    background: var(--white);
    box-shadow: var(--shadow-md);
}

.navbar.scrolled .nav-menu a {
    color: var(--text);
}

.navbar.scrolled .brand-name {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo {
    width: 40px;
    height: 40px;
}

.brand-name {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-md);
}

.nav-menu a {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-weight: 500;
    position: relative;
    color: var(--dark);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition-fast);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 80%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: var(--spacing-xs);
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--dark);
    transition: var(--transition-fast);
}

/* Hero 区域 */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 80px;
    overflow: hidden;
    background: linear-gradient(135deg, #0a0a1a 0%, #1a1a3a 50%, #0a0a2a 100%);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    filter: brightness(0.6) contrast(1.2) saturate(1.1);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        135deg, 
        rgba(10, 10, 30, 0.85) 0%, 
        rgba(0, 102, 255, 0.3) 50%, 
        rgba(0, 217, 255, 0.2) 100%
    );
    z-index: 1;
}

/* 粒子动画 */
.particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    overflow: hidden;
    pointer-events: none;
}

.particles span {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(0, 217, 255, 0.6);
    border-radius: 50%;
    box-shadow: 0 0 10px rgba(0, 217, 255, 0.8), 0 0 20px rgba(0, 217, 255, 0.4);
    animation: particleFloat 8s linear infinite;
}

.particles span:nth-child(1) { left: 10%; animation-delay: 0s; animation-duration: 10s; }
.particles span:nth-child(2) { left: 20%; animation-delay: 1s; animation-duration: 12s; }
.particles span:nth-child(3) { left: 30%; animation-delay: 2s; animation-duration: 8s; }
.particles span:nth-child(4) { left: 40%; animation-delay: 3s; animation-duration: 14s; }
.particles span:nth-child(5) { left: 50%; animation-delay: 4s; animation-duration: 9s; }
.particles span:nth-child(6) { left: 60%; animation-delay: 0.5s; animation-duration: 11s; }
.particles span:nth-child(7) { left: 70%; animation-delay: 1.5s; animation-duration: 13s; }
.particles span:nth-child(8) { left: 80%; animation-delay: 2.5s; animation-duration: 7s; }
.particles span:nth-child(9) { left: 85%; animation-delay: 3.5s; animation-duration: 10s; }
.particles span:nth-child(10) { left: 95%; animation-delay: 4.5s; animation-duration: 12s; }

@keyframes particleFloat {
    0% {
        transform: translateY(100vh) scale(0);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100vh) scale(1);
        opacity: 0;
    }
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    color: #FFFFFF;
    max-width: 900px;
    padding: 0 var(--spacing-md);
}

.hero-title {
    font-size: 4.5rem;
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
    color: #FFFFFF;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.8);
    animation: fadeInUp 1s ease-out;
}

.hero-subtitle {
    font-size: 1.4rem;
    margin-bottom: var(--spacing-lg);
    color: #FFFFFF;
    opacity: 1;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
}

.hero-title .highlight {
    display: block;
    background: linear-gradient(90deg, #00D9FF, #0066FF, #00D9FF);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shimmer 3s linear infinite;
}

@keyframes shimmer {
    0% { background-position: 0% center; }
    100% { background-position: 200% center; }
}

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

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.hero-features {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    animation: fadeInUp 1s ease-out 0.3s both;
}

.feature-badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(15px);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(0, 217, 255, 0.3);
    transition: all 0.3s ease;
    cursor: default;
}

.feature-badge:hover {
    background: rgba(0, 217, 255, 0.2);
    border-color: rgba(0, 217, 255, 0.6);
    box-shadow: 0 0 20px rgba(0, 217, 255, 0.3);
    transform: translateY(-3px);
}

.feature-badge .icon {
    font-size: 1.5rem;
}

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

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    font-family: var(--font-mono);
}

.stat-label {
    display: block;
    font-size: 0.9rem;
    opacity: 0.8;
    margin-top: var(--spacing-xs);
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: var(--white);
    opacity: 0.8;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-left: 2px solid var(--white);
    border-bottom: 2px solid var(--white);
    transform: rotate(-45deg);
    margin: var(--spacing-sm) auto 0;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0) rotate(-45deg);
    }
    40% {
        transform: translateY(-10px) rotate(-45deg);
    }
    60% {
        transform: translateY(-5px) rotate(-45deg);
    }
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-weight: 600;
    text-align: center;
    transition: var(--transition-fast);
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, #0066FF 0%, #00D9FF 100%);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(0, 102, 255, 0.4);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.5s ease;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 102, 255, 0.5);
}

.btn-outline {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255, 255, 255, 0.8);
    position: relative;
    overflow: hidden;
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #00D9FF;
    color: #00D9FF;
    box-shadow: 0 0 20px rgba(0, 217, 255, 0.3);
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1.125rem;
}

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

/* 区块样式 */
section {
    padding: var(--spacing-xl) 0;
}

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

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--gray);
}

/* 功能特点 */
.features {
    background: var(--bg-light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.feature-card {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.feature-card p {
    color: var(--gray);
    line-height: 1.8;
}

/* 产品图片展示 */
.gallery {
    background: var(--white);
    padding: var(--spacing-xl) 0;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
    max-width: 1400px;
    margin: 0 auto;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    cursor: pointer;
    aspect-ratio: 9/16;
}

.gallery-item:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0, 102, 255, 0.25);
}

.gallery-item::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.1) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.gallery-item:hover::after {
    opacity: 1;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: all 0.5s ease;
    filter: brightness(0.95) contrast(1.05) saturate(1.1);
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
}

.gallery-item:hover img {
    transform: scale(1.1);
    filter: brightness(1.05) contrast(1.1) saturate(1.2);
}

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, transparent 100%);
    padding: var(--spacing-md);
    color: var(--white);
    transform: translateY(100%);
    transition: var(--transition-normal);
}

.gallery-item:hover .gallery-overlay {
    transform: translateY(0);
}

.gallery-overlay h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
    color: #FFFFFF;
    font-weight: 700;
}

.gallery-overlay p {
    font-size: 0.9rem;
    color: #FFFFFF;
    opacity: 1;
}

/* 应用场景 */
.application-scenes {
    background: var(--bg-light);
    padding: var(--spacing-xl) 0;
}

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

.scene-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.scene-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.scene-image {
    width: 100%;
    height: 120px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.scene-icon {
    font-size: 3.5rem;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.2));
}

.scene-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--text);
}

.scene-list {
    list-style: none;
    padding: 0;
    margin: var(--spacing-md) 0;
}

.scene-list li {
    padding: var(--spacing-xs) 0;
    padding-left: 24px;
    position: relative;
    color: var(--text);
    font-size: 0.95rem;
}

.scene-list li::before {
    content: "▸";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.scene-example {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--bg-light);
    color: var(--gray);
    font-size: 0.9rem;
    font-style: italic;
}

/* 控制方式 */
.control-methods {
    background: var(--bg-light);
    padding: var(--spacing-xl) 0;
}

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

.control-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    position: relative;
    border: 2px solid transparent;
}

.control-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.control-card.featured {
    border-color: var(--secondary-color);
    box-shadow: 0 8px 24px rgba(255, 107, 53, 0.2);
}

.control-badge {
    position: absolute;
    top: -12px;
    right: 20px;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--white);
}

.control-badge.basic {
    background: linear-gradient(135deg, #4299e1 0%, #3182ce 100%);
}

.control-badge.advanced {
    background: linear-gradient(135deg, #f6ad55 0%, #ed8936 100%);
}

.control-badge.pro {
    background: linear-gradient(135deg, #fc8181 0%, #e53e3e 100%);
}

.control-badge.future {
    background: linear-gradient(135deg, #9f7aea 0%, #805ad5 100%);
}

.control-icon {
    font-size: 3rem;
    text-align: center;
    margin: var(--spacing-md) 0;
}

.control-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

.control-desc {
    text-align: center;
    color: var(--gray);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--bg-light);
}

.control-features {
    list-style: none;
    padding: 0;
    margin: var(--spacing-md) 0;
}

.control-features li {
    padding: var(--spacing-xs) 0;
    padding-left: 24px;
    position: relative;
    color: var(--text);
}

.control-features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: bold;
}

.control-scene {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--bg-light);
}

.control-scene strong {
    color: var(--primary-color);
    display: block;
    margin-bottom: var(--spacing-xs);
}

.control-scene p {
    color: var(--gray);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* 运镜模式 */
.modes {
    background: var(--white);
}

.modes-tabs {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.tab-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-weight: 600;
    background: var(--bg-light);
    color: var(--gray);
}

.tab-btn.active {
    background: var(--gradient-primary);
    color: var(--white);
}

.mode-panel {
    display: none;
}

.mode-panel.active {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    gap: var(--spacing-lg);
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
}

.mode-visual {
    background: transparent;
    border: 1px solid rgba(0, 217, 255, 0.3);
    border-radius: var(--radius-sm);
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
}

.mode-visual canvas {
    display: block;
}

.mode-info h3 {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
}

.mode-desc {
    font-size: 1.125rem;
    color: var(--gray);
    margin-bottom: var(--spacing-md);
}

.mode-features {
    margin-bottom: var(--spacing-md);
}

.mode-features li {
    padding: var(--spacing-xs) 0;
    font-size: 1.125rem;
}

.mode-controls {
    padding: var(--spacing-md);
    background: var(--bg-light);
    border-radius: var(--radius-md);
}

.control-label {
    font-weight: 600;
    display: block;
    margin-bottom: var(--spacing-xs);
}

.mode-submodes {
    display: flex;
    flex-wrap: nowrap;
    gap: var(--spacing-md);
    justify-content: center;
    align-items: stretch;
    padding: var(--spacing-md) 0;
    width: 100%;
    max-width: 1000px;
    margin: 0 auto;
}

.mode-submodes .submode-card {
    flex: 1 1 0;
    min-width: 140px;
    max-width: 180px;
}

.submode-card {
    background: transparent;
    padding: var(--spacing-sm);
    border-radius: var(--radius-lg);
    box-shadow: none;
    transition: all 0.3s ease;
    text-align: center;
    border: none;
}

.submode-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.submode-card.featured {
    border-color: var(--accent-color);
}

.submode-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-color);
}

.submode-card h4 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--dark);
}

.submode-card p {
    color: var(--gray);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.submode-demo {
    margin-top: var(--spacing-md);
    border-radius: var(--radius-md);
    overflow: visible;
    display: flex;
    justify-content: center;
    align-items: center;
}

.demo-canvas {
    display: block;
    width: 140px;
    height: 90px;
    background: #1A1A1A;
    border-radius: var(--radius-sm);
    transition: all 0.3s ease;
}

.submode-card:hover .demo-canvas {
    box-shadow: 0 0 20px rgba(0, 217, 255, 0.5), 0 0 40px rgba(0, 102, 255, 0.3);
    transform: scale(1.05);
}

.submode-card:hover {
    border-color: rgba(0, 217, 255, 0.8);
    box-shadow: 0 8px 30px rgba(0, 217, 255, 0.3), inset 0 0 20px rgba(0, 217, 255, 0.1);
    transform: translateY(-5px);
}

/* 技术参数 */
.specs {
    background: var(--bg-light);
}

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

.spec-category {
    background: var(--white);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.spec-category h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--primary-color);
}

.spec-table {
    width: 100%;
}

.spec-table tr {
    border-bottom: 1px solid var(--light-gray);
}

.spec-table td {
    padding: var(--spacing-sm) 0;
}

.spec-table td:first-child {
    color: var(--gray);
    width: 40%;
}

.spec-table td:last-child {
    font-weight: 500;
}

.spec-table .highlight {
    color: var(--primary-color);
    font-weight: 700;
}

/* 版本对比 */
.versions {
    background: var(--white);
}

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

.version-card {
    background: var(--white);
    border: 2px solid var(--light-gray);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    position: relative;
    transition: var(--transition-normal);
}

.version-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.version-card.featured {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.version-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--gray);
    color: var(--white);
    border-radius: var(--radius-xl);
    font-size: 0.875rem;
    font-weight: 600;
}

.version-badge.popular {
    background: var(--gradient-primary);
}

.version-name {
    font-size: 2rem;
    text-align: center;
    margin: var(--spacing-md) 0;
}

.version-price {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.price-label {
    display: block;
    color: var(--gray);
    margin-bottom: var(--spacing-xs);
}

.price-value {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.version-features {
    margin-bottom: var(--spacing-lg);
}

.version-features li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--bg-light);
}

.version-features .included {
    color: var(--dark);
}

.version-features .excluded {
    color: var(--gray);
    opacity: 0.6;
}

.version-recommend {
    background: var(--bg-light);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
}

.version-recommend strong {
    display: block;
    margin-bottom: var(--spacing-xs);
}

/* 联系表单 */
.contact {
    background: var(--bg-light);
}

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

.contact-info h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

.contact-methods {
    margin: var(--spacing-md) 0;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) 0;
}

.method-icon {
    font-size: 1.5rem;
}

.method-label {
    font-weight: 600;
    min-width: 80px;
}

.custom-services {
    margin-top: var(--spacing-md);
}

.custom-services li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--light-gray);
}

.contact-form {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

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

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--light-gray);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition-fast);
}

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

/* 页脚 */
.footer {
    background: var(--dark);
    color: var(--white);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

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

.footer-brand p {
    margin: var(--spacing-sm) 0;
    opacity: 0.8;
}

.copyright {
    font-size: 0.875rem;
}

/* ICP备案信息 - 页脚底部 */
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    text-align: center;
}

.footer-bottom p {
    margin: 0;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-bottom a:hover {
    color: rgba(255, 255, 255, 0.9);
}

.footer-links h4 {
    margin-bottom: var(--spacing-md);
    font-size: 1.125rem;
}

.footer-links ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    opacity: 0.8;
    transition: var(--transition-fast);
}

.footer-links a:hover {
    opacity: 1;
    color: var(--primary-light);
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
}

.social-links a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: var(--transition-fast);
}

.social-links a:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
}

.social-links svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

/* 联系方式美化 */
.contact-method.clickable {
    cursor: pointer;
    transition: all 0.3s ease;
    padding: var(--spacing-sm);
    margin: 2px 0;
    border-radius: var(--radius-sm);
}

.contact-method.clickable:hover {
    background: rgba(0, 102, 255, 0.1);
    transform: translateX(5px);
}

.method-link {
    color: var(--primary-color);
    text-decoration: none;
    transition: all 0.3s ease;
}

.method-link:hover {
    color: var(--primary-light);
    text-decoration: underline;
}

.method-link small {
    font-size: 0.75rem;
    opacity: 0.7;
}

/* 表单行布局 */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.form-group .required {
    color: #ff4757;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--gray);
    opacity: 0.6;
}

/* 手机端表单行单列 */
@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
}