/* 宇宙星空风格全局样式 */
:root {
    --primary-color: #6366F1;
    --secondary-color: #8B5CF6;
    --accent-color: #F59E0B;
    --dark-color: #0F0F23;
    --light-color: #1A1A2E;
    --text-color: #FFFFFF;
    --text-light: #E2E8F0;
    --white: #FFFFFF;
    --gradient-primary: linear-gradient(135deg, #6366F1 0%, #8B5CF6 100%);
    --gradient-secondary: linear-gradient(135deg, #F59E0B 0%, #EF4444 100%);
    --gradient-tech: linear-gradient(135deg, #0F0F23 0%, #1A1A2E 25%, #16213E 50%, #0F3460 75%, #533483 100%);
    --gradient-cyber: linear-gradient(45deg, #0F0F23 0%, #1A1A2E 20%, #16213E 40%, #0F3460 60%, #533483 80%, #0F0F23 100%);
    --gradient-neon: linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #F59E0B 100%);
    --gradient-cosmic: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 15px 40px rgba(0, 0, 0, 0.4);
    --glow-primary: 0 0 20px rgba(99, 102, 241, 0.3);
    --glow-secondary: 0 0 20px rgba(139, 92, 246, 0.3);
    --glow-accent: 0 0 20px rgba(245, 158, 11, 0.3);
}

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

body {
    font-family: 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    overflow-x: hidden;
    background: var(--gradient-tech);
    background-attachment: fixed;
    position: relative;
}

/* 宇宙星空背景动画 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(245, 158, 11, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 60% 60%, rgba(239, 68, 68, 0.05) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
    animation: backgroundShift 25s ease-in-out infinite;
}

@keyframes backgroundShift {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(-10px, -10px) scale(1.05); }
    50% { transform: translate(10px, -5px) scale(1.02); }
    75% { transform: translate(-5px, 10px) scale(1.03); }
}

/* 导航栏样式 */
.navbar {
    background: rgba(15, 15, 35, 0.95);
    backdrop-filter: blur(25px);
    border-bottom: 1px solid rgba(99, 102, 241, 0.2);
    transition: all 0.3s ease;
    padding: 1.75rem 0; /* 适当缩小上下内边距 */
    transform: translateY(0);
    box-shadow: 0 4px 25px rgba(0, 0, 0, 0.3);
    min-height: 90px; /* 适当缩小最小高度 */
}

.navbar-brand {
    font-size: 2.2rem; /* 适当缩小品牌字体大小 */
    font-weight: 700;
    color: var(--white) !important;
    padding: 0.5rem 0; /* 适当缩小品牌内边距 */
}

.navbar-nav .nav-link {
    color: var(--white) !important;
    font-weight: 700; /* 增大字重 */
    margin: 0 1.2rem; /* 适当缩小导航链接间距 */
    transition: all 0.3s ease;
    position: relative;
    font-size: 1.4rem; /* 适当缩小导航链接字体大小 */
    padding: 0.75rem 1.2rem; /* 适当缩小导航链接内边距 */
}

.navbar-nav .nav-link:hover {
    color: var(--primary-color) !important;
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
}

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-neon);
    transition: all 0.3s ease;
    transform: translateX(-50%);
    box-shadow: var(--glow-primary);
}

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

/* 英雄区域样式 */
.hero-section {
    background: var(--gradient-cyber);
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: flex-start; /* 改为顶部对齐 */
    justify-content: center; /* 水平居中 */
    color: var(--white);
    overflow: hidden;
    padding-top: 180px; /* 增加顶部内边距，让标题向下移动 */
}

/* 科技感网格背景 */
.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 212, 255, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
    z-index: 1;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 2;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    margin-top: 2rem; /* 增加顶部间距 */
    animation: fadeInUp 1s ease;
    text-shadow: 0 0 30px rgba(0, 212, 255, 0.5);
    position: relative;
    z-index: 3;
}

.hero-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--gradient-neon);
    box-shadow: var(--glow-primary);
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    animation: fadeInUp 1s ease 0.2s both;
    position: relative;
    z-index: 3;
    text-shadow: 0 0 15px rgba(0, 212, 255, 0.3);
}

.hero-buttons {
    animation: fadeInUp 1s ease 0.4s both;
    position: relative;
    z-index: 3;
}

.btn {
    border-radius: 50px;
    padding: 0.75rem 2rem;
    font-weight: 500;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: var(--gradient-cosmic);
    border: 2px solid var(--primary-color);
    color: var(--white);
    box-shadow: var(--glow-primary);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-primary:hover {
    background: transparent;
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--glow-primary), 0 10px 30px rgba(99, 102, 241, 0.3);
    border-color: var(--primary-color);
}

.btn-outline-light {
    border: 2px solid var(--white);
    color: var(--white);
}

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

/* 英雄区域动画 */
.hero-animation {
    position: relative;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ai-robot {
    font-size: 8rem;
    color: var(--white);
    animation: float 3s ease-in-out infinite;
    text-shadow: 0 0 50px rgba(99, 102, 241, 0.8);
    position: relative;
    z-index: 3;
}

.ai-robot::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.2) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.5; }
    50% { transform: translate(-50%, -50%) scale(1.2); opacity: 0.8; }
}

.floating-elements {
    position: absolute;
    width: 100%;
    height: 100%;
}

.element {
    position: absolute;
    font-size: 2rem;
    color: var(--white);
    opacity: 0.7;
}

.element-1 {
    top: 20%;
    left: 20%;
    animation: float 4s ease-in-out infinite;
}

.element-2 {
    top: 60%;
    right: 20%;
    animation: float 4s ease-in-out infinite 1s;
}

.element-3 {
    bottom: 20%;
    left: 50%;
    animation: float 4s ease-in-out infinite 2s;
}

/* 章节样式 */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #000000;
    text-shadow: none;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--gradient-neon);
    box-shadow: var(--glow-primary);
}

.section-subtitle {
    font-size: 1.1rem;
    color: #FF6B35;
    margin-bottom: 3rem;
    text-shadow: none;
}

/* 关于我们样式 */
.about-content h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-weight: 600;
}

.about-content p {
    margin-bottom: 1.5rem;
    color: #CCCCCC;
}

.value-list {
    list-style: none;
    padding: 0;
}

.value-list li {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    color: #CCCCCC;
}

.value-list i {
    color: var(--primary-color);
    margin-right: 1rem;
    font-size: 1.2rem;
}

/* 统计卡片样式 */
.stat-card {
    background: rgba(26, 26, 26, 0.8);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    margin-bottom: 1rem;
    border: 1px solid rgba(0, 212, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.stat-card:hover::before {
    left: 100%;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover), var(--glow-primary);
    border-color: var(--primary-color);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    text-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
}

.stat-label {
    color: #CCCCCC;
    font-weight: 500;
}

/* 产品卡片样式 */
.product-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    height: 100%;
    border: 1px solid rgba(99, 102, 241, 0.2);
    position: relative;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.1), transparent);
    transition: left 0.5s ease;
    z-index: 1;
}

.product-card:hover::before {
    left: 100%;
}

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

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

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.product-content {
    padding: 1.5rem;
}

.product-content h4 {
    color: #000000;
    margin-bottom: 1rem;
    font-weight: 600;
    text-shadow: none;
    font-size: 1.3rem;
}

.product-content p {
    color: #333333;
    margin-bottom: 1rem;
    font-size: 1rem;
    line-height: 1.6;
}

.product-features .badge {
    margin-right: 0.5rem;
    margin-bottom: 0.5rem;
}

/* 技术卡片样式 */
.tech-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(15px);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    height: 100%;
    border: 1px solid rgba(0, 212, 255, 0.3);
    position: relative;
    overflow: hidden;
}

.tech-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.tech-card:hover::before {
    left: 100%;
}

.tech-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover), var(--glow-primary);
    border-color: var(--primary-color);
}

.tech-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    text-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
    animation: techGlow 2s ease-in-out infinite alternate;
}

@keyframes techGlow {
    0% { text-shadow: 0 0 20px rgba(0, 212, 255, 0.5); }
    100% { text-shadow: 0 0 30px rgba(0, 212, 255, 0.8); }
}

.tech-card h4 {
    color: #000000;
    margin-bottom: 1rem;
    font-weight: 600;
    text-shadow: none;
}

.tech-card p {
    color: #333333;
    font-size: 1rem;
    line-height: 1.6;
}

/* 团队卡片样式 */
.team-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(15px);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    height: 100%;
    border: 1px solid rgba(0, 212, 255, 0.3);
    position: relative;
    overflow: hidden;
}

.team-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.team-card:hover::before {
    left: 100%;
}

.team-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover), var(--glow-primary);
    border-color: var(--primary-color);
}

.team-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 auto 1.5rem;
    border: 4px solid var(--primary-color);
    box-shadow: var(--glow-primary);
    position: relative;
}

.team-avatar::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: var(--gradient-neon);
    border-radius: 50%;
    z-index: -1;
    animation: borderRotate 3s linear infinite;
}

@keyframes borderRotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.team-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.team-card h4 {
    color: #000000;
    margin-bottom: 0.5rem;
    font-weight: 600;
    text-shadow: none;
    font-size: 1.3rem;
}

.team-position {
    color: #0066CC;
    font-weight: 500;
    margin-bottom: 1rem;
    text-shadow: none;
    font-size: 1.1rem;
}

.team-description {
    color: #333333;
    font-size: 1rem;
    line-height: 1.6;
}

/* 联系表单样式 */
.contact-info h4 {
    color: #FFFFFF;
    margin-bottom: 2rem;
    font-weight: 600;
    text-shadow: 0 0 15px rgba(0, 212, 255, 0.5);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 1.5rem;
}

.contact-item i {
    color: var(--primary-color);
    font-size: 1.2rem;
    margin-right: 1rem;
    margin-top: 0.2rem;
}

.contact-item strong {
    color: #FFFFFF;
    display: block;
    margin-bottom: 0.2rem;
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.3);
}

.contact-item p {
    color: #CCCCCC;
    margin: 0;
}

.contact-form {
    background: var(--white);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.form-control {
    border: 2px solid #E8E8E8;
    border-radius: 10px;
    padding: 0.75rem 1rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(74, 144, 226, 0.25);
}

/* 页脚样式 */
.footer {
    background: var(--dark-color) !important;
}

.footer h5, .footer h6 {
    color: var(--white);
    margin-bottom: 1.5rem;
    font-weight: 700;
    text-shadow: 
        0 1px 3px rgba(0, 0, 0, 1),
        0 2px 6px rgba(0, 0, 0, 0.9),
        0 0 12px rgba(0, 0, 0, 0.7);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    letter-spacing: 0.3px;
}

.footer p {
    color: #ffffff;
    margin-bottom: 1rem;
    font-weight: 600;
    text-shadow: 
        0 1px 3px rgba(0, 0, 0, 1),
        0 0 8px rgba(0, 0, 0, 0.8);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-size: 1rem;
}

.footer-links {
    list-style: none;
    padding: 0;
}

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

.footer-links a {
    color: #ffffff;
    text-decoration: none;
    transition: all 0.3s ease;
    font-weight: 600;
    text-shadow: 
        0 1px 3px rgba(0, 0, 0, 1),
        0 0 6px rgba(0, 0, 0, 0.8);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-size: 1rem;
}

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

.social-links {
    margin-top: 1rem;
}

.social-link {
    display: inline-block;
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    color: var(--white);
    text-align: center;
    line-height: 40px;
    border-radius: 50%;
    margin-right: 0.5rem;
    transition: all 0.3s ease;
}

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

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

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* 滚动动画 */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

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

/* 响应式设计 */

/* 大屏幕设备 (1200px及以上) */
@media (min-width: 1200px) {
    .container {
        max-width: 1140px;
    }
    
    .hero-title {
        font-size: 4rem;
    }
    
    .hero-subtitle {
        font-size: 1.3rem;
    }
    
    .section-title {
        font-size: 3rem;
    }
    
    .ai-robot {
        font-size: 10rem;
    }
    
    .product-card {
        margin-bottom: 2rem;
    }
    
    .tech-card {
        padding: 3rem 2rem;
    }
    
    .team-card {
        padding: 3rem 2rem;
    }
}

/* 中等屏幕设备 (992px - 1199px) */
@media (max-width: 1199px) and (min-width: 992px) {
    .hero-title {
        font-size: 3.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .section-title {
        font-size: 2.8rem;
    }
    
    .ai-robot {
        font-size: 8rem;
    }
}

/* 平板设备 (768px - 991px) */
@media (max-width: 991px) and (min-width: 768px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .section-title {
        font-size: 2.5rem;
    }
    
    .ai-robot {
        font-size: 6rem;
    }
    
    .hero-buttons .btn {
        margin-bottom: 1rem;
        width: auto;
        min-width: 200px;
    }
    
    .product-card {
        margin-bottom: 1.5rem;
    }
    
    .tech-card {
        margin-bottom: 1.5rem;
    }
    
    .team-card {
        margin-bottom: 1.5rem;
    }
    
    .contact-form {
        margin-top: 2rem;
    }
}

/* 手机设备 (576px - 767px) */
@media (max-width: 767px) and (min-width: 576px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .ai-robot {
        font-size: 5rem;
    }
    
    .hero-buttons .btn {
        display: block;
        margin-bottom: 1rem;
        width: 100%;
        max-width: 300px;
        margin-left: auto;
        margin-right: auto;
    }
    
    .navbar-nav {
        text-align: center;
        margin-top: 1rem;
    }
    
    .navbar-nav .nav-link {
        padding: 0.8rem 1.2rem; /* 适当缩小导航链接内边距 */
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        font-size: 1.1rem; /* 适当缩小导航链接字体大小 */
    }
    
    .navbar-nav .nav-link:last-child {
        border-bottom: none;
    }
    
    .contact-item {
        flex-direction: column;
        text-align: center;
    }
    
    .contact-item i {
        margin-right: 0;
        margin-bottom: 0.5rem;
    }
    
    .product-card {
        margin-bottom: 1.5rem;
    }
    
    .tech-card {
        margin-bottom: 1.5rem;
    }
    
    .team-card {
        margin-bottom: 1.5rem;
    }
    
    .stat-card {
        margin-bottom: 1rem;
    }
    
    .footer {
        text-align: center;
    }
    
    .footer .col-lg-2,
    .footer .col-lg-4 {
        margin-bottom: 2rem;
    }
}

/* 小屏手机设备 (575px及以下) */
@media (max-width: 575px) {
    .hero-title {
        font-size: 2rem;
        line-height: 1.2;
    }
    
    .hero-subtitle {
        font-size: 0.95rem;
        line-height: 1.4;
    }
    
    .section-title {
        font-size: 1.8rem;
        line-height: 1.3;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    .ai-robot {
        font-size: 4rem;
    }
    
    .hero-animation {
        height: 300px;
    }
    
    .floating-elements .element {
        font-size: 1.5rem;
    }
    
    .hero-buttons .btn {
        display: block;
        margin-bottom: 1rem;
        width: 100%;
        padding: 0.75rem 1.5rem;
        font-size: 0.95rem;
    }
    
    .navbar-brand {
        font-size: 1.6rem; /* 适当缩小品牌字体大小 */
    }
    
    .navbar-nav {
        text-align: center;
        margin-top: 1rem;
    }
    
    .navbar-nav .nav-link {
        padding: 0.8rem 1.2rem; /* 适当缩小导航链接内边距 */
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        font-size: 1.1rem; /* 适当缩小导航链接字体大小 */
    }
    
    .navbar-nav .nav-link:last-child {
        border-bottom: none;
    }
    
    .stat-number {
        font-size: 1.8rem;
    }
    
    .stat-label {
        font-size: 0.9rem;
    }
    
    .tech-icon {
        font-size: 2.5rem;
    }
    
    .tech-card h4 {
        font-size: 1.1rem;
    }
    
    .tech-card p {
        font-size: 0.9rem;
    }
    
    .team-avatar {
        width: 100px;
        height: 100px;
    }
    
    .team-card h4 {
        font-size: 1.1rem;
    }
    
    .team-position {
        font-size: 0.9rem;
    }
    
    .team-description {
        font-size: 0.85rem;
    }
    
    .product-content h4 {
        font-size: 1.1rem;
    }
    
    .product-content p {
        font-size: 0.9rem;
    }
    
    .product-features .badge {
        font-size: 0.75rem;
        padding: 0.3rem 0.6rem;
    }
    
    .contact-info h4 {
        font-size: 1.2rem;
    }
    
    .contact-item {
        flex-direction: column;
        text-align: center;
        margin-bottom: 1rem;
    }
    
    .contact-item i {
        margin-right: 0;
        margin-bottom: 0.5rem;
        font-size: 1.1rem;
    }
    
    .contact-item strong {
        font-size: 0.9rem;
    }
    
    .contact-item p {
        font-size: 0.9rem;
    }
    
    .contact-form {
        padding: 1.5rem;
    }
    
    .form-control {
        padding: 0.6rem 0.8rem;
        font-size: 0.9rem;
    }
    
    .btn {
        padding: 0.6rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .footer h5,
    .footer h6 {
        font-size: 1.1rem;
    }
    
    .footer p {
        font-size: 0.9rem;
    }
    
    .footer-links a {
        font-size: 0.9rem;
    }
    
    .social-link {
        width: 35px;
        height: 35px;
        line-height: 35px;
        font-size: 0.9rem;
    }
    
    .product-card {
        margin-bottom: 1.5rem;
    }
    
    .tech-card {
        margin-bottom: 1.5rem;
        padding: 1.5rem;
    }
    
    .team-card {
        margin-bottom: 1.5rem;
        padding: 1.5rem;
    }
    
    .stat-card {
        margin-bottom: 1rem;
        padding: 1.5rem;
    }
    
    .footer {
        text-align: center;
    }
    
    .footer .col-lg-2,
    .footer .col-lg-4 {
        margin-bottom: 2rem;
    }
    
    .about-content h3 {
        font-size: 1.2rem;
    }
    
    .about-content p {
        font-size: 0.9rem;
    }
    
    .value-list li {
        font-size: 0.9rem;
    }
    
    .value-list i {
        font-size: 1rem;
    }
}

/* 超小屏设备 (375px及以下) */
@media (max-width: 375px) {
    .hero-title {
        font-size: 1.8rem;
    }
    
    .hero-subtitle {
        font-size: 0.9rem;
    }
    
    .section-title {
        font-size: 1.6rem;
    }
    
    .ai-robot {
        font-size: 3.5rem;
    }
    
    .hero-animation {
        height: 250px;
    }
    
    .container {
        padding-left: 15px;
        padding-right: 15px;
    }
    
    .product-card,
    .tech-card,
    .team-card,
    .stat-card {
        padding: 1rem;
    }
    
    .contact-form {
        padding: 1rem;
    }
    
    .btn {
        padding: 0.5rem 1.2rem;
        font-size: 0.85rem;
    }
}

/* 横屏手机优化 */
@media (max-height: 500px) and (orientation: landscape) {
    .hero-section {
        min-height: 100vh;
        padding: 2rem 0;
    }
    
    .hero-title {
        font-size: 2rem;
        margin-bottom: 1rem;
    }
    
    .hero-subtitle {
        font-size: 0.9rem;
        margin-bottom: 1rem;
    }
    
    .hero-animation {
        height: 200px;
    }
    
    .ai-robot {
        font-size: 3rem;
    }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    .btn:hover {
        transform: none;
    }
    
    .product-card:hover {
        transform: none;
    }
    
    .tech-card:hover {
        transform: none;
    }
    
    .team-card:hover {
        transform: none;
    }
    
    .stat-card:hover {
        transform: none;
    }
    
    .social-link:hover {
        transform: none;
    }
    
    /* 增加触摸目标大小 */
    .btn {
        min-height: 44px;
        min-width: 44px;
    }
    
    .navbar-nav .nav-link {
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .social-link {
        min-width: 44px;
        min-height: 44px;
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #357ABD;
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--white);
    animation: spin 1s ease-in-out infinite;
}

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

/* 工具提示样式 */
.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip .tooltiptext {
    visibility: hidden;
    width: 120px;
    background-color: var(--dark-color);
    color: var(--white);
    text-align: center;
    border-radius: 6px;
    padding: 5px;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    margin-left: -60px;
    opacity: 0;
    transition: opacity 0.3s;
}

.tooltip:hover .tooltiptext {
    visibility: visible;
    opacity: 1;
}