/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

:root {
    --primary-color: #0066cc;
    --secondary-color: #00a3ff;
    --accent-color: #00f7ff;
    --dark-bg: #000;
    --light-bg: #f5f5f7;
}

body {
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
    background-color: var(--dark-bg);
    margin: 0;
    padding: 0;
}

/* 导航栏样式 */
.nav-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    padding: 1rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    transition: all 0.3s ease;
    background: var(--dark-bg);
}

.nav-bar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
}

.logo {
    font-size: 1.5rem;
    font-weight: 600;
    color: white;
    position: relative;
    transition: color 0.3s ease;
    cursor: pointer;
}

.nav-bar.scrolled .logo {
    color: #000;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: white;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-bar.scrolled .nav-links a {
    color: #333;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: width 0.3s ease;
}

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

/* 英雄区域样式 */
.hero {
    min-height: 100vh;
    width: 100vw;
    background: var(--dark-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
    margin: 0;
    padding: 72px 1rem 0;
}

.tech-circles {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.circle {
    position: absolute;
    border-radius: 50%;
    border: 2px solid rgba(0, 102, 204, 0.1);
    animation: pulse 4s infinite;
}

.circle:nth-child(1) {
    width: 300px;
    height: 300px;
    top: 20%;
    left: 10%;
    border-color: rgba(0, 102, 204, 0.1);
    animation-delay: 0s;
}

.circle:nth-child(2) {
    width: 500px;
    height: 500px;
    top: 40%;
    right: 5%;
    border-color: rgba(0, 163, 255, 0.1);
    animation-delay: 1s;
}

.circle:nth-child(3) {
    width: 700px;
    height: 700px;
    bottom: -20%;
    left: 30%;
    border-color: rgba(0, 247, 255, 0.1);
    animation-delay: 2s;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 0.3;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.5;
    }
    100% {
        transform: scale(1);
        opacity: 0.3;
    }
}

.hero-content {
    max-width: 800px;
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 1rem;
    font-weight: 700;
    background: linear-gradient(to right, #fff, var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: fadeInUp 1s ease;
}

.hero p {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    animation: fadeInUp 1s ease 0.2s;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin: 3rem 0;
    animation: fadeInUp 1s ease 0.4s;
}

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

.stat-item i {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.stat-item span {
    font-size: 2rem;
    font-weight: 700;
    display: block;
    margin: 0.5rem 0;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 30px;
    font-weight: 500;
    transition: all 0.3s ease;
    animation: fadeInUp 1s ease 0.6s;
}

.cta-button:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 102, 204, 0.3);
}

/* 关于我们部分 */
.about {
    padding: 8rem 5%;
    background: var(--light-bg);
    text-align: center;
}

.about h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    position: relative;
    display: inline-block;
}

.about h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background: var(--primary-color);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.about-item {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.about-item:hover {
    transform: translateY(-10px);
}

.about-item i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.about-description {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.2rem;
    line-height: 1.8;
}

/* 技术创新部分 */
.technology {
    padding: 8rem 5%;
    background: white;
    text-align: center;
}

.technology h2 {
    font-size: 2.5rem;
    margin-bottom: 4rem;
    position: relative;
    display: inline-block;
}

.technology h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--primary-color);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

.tech-card {
    background: var(--light-bg);
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.3s ease;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 3rem 2rem;
    text-align: left;
}

.tech-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.tech-icon {
    width: 80px;
    height: 80px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 2rem;
    box-shadow: 0 5px 15px rgba(0, 102, 204, 0.15);
}

.tech-icon i {
    font-size: 2.5rem;
    color: var(--primary-color);
    transition: transform 0.3s ease;
}

.tech-card:hover .tech-icon i {
    transform: scale(1.1);
}

.tech-content {
    width: 100%;
}

.tech-content h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: #333;
}

.tech-subtitle {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 2rem;
}

.tech-features {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.5rem 0;
    transition: transform 0.3s ease;
}

.feature-item:hover {
    transform: translateX(10px);
}

.feature-icon {
    color: var(--primary-color);
    font-weight: bold;
}

.feature-text {
    color: #444;
    font-size: 1.1rem;
}

/* 合作伙伴部分 */
.partners {
    padding: 8rem 5%;
    background: var(--light-bg);
    text-align: center;
}

.partners h2 {
    font-size: 2.5rem;
    margin-bottom: 4rem;
    position: relative;
    display: inline-block;
}

.partners h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--primary-color);
}

.partners-content {
    max-width: 1200px;
    margin: 0 auto;
}

.partner-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin: 0 auto;
}

.partner-item {
    background: white;
    padding: 3rem 2rem;
    border-radius: 20px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.partner-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.partner-item img {
    max-width: 200px;
    height: auto;
    margin-bottom: 2rem;
}

.partner-item h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: #333;
}

.partner-item p {
    color: #666;
    font-size: 1.1rem;
}

.partner-stats {
    display: flex;
    justify-content: space-around;
    padding: 2rem;
}

.stat span {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    display: block;
}

/* 联系我们部分 */
.contact {
    padding: 8rem 5%;
    text-align: center;
    background: white;
}

.contact h2 {
    font-size: 2.5rem;
    margin-bottom: 4rem;
    position: relative;
    display: inline-block;
}

.contact h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--primary-color);
}

.contact-content {
    max-width: 1200px;
    margin: 0 auto;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin: 0 auto;
}

.contact-item {
    background: var(--light-bg);
    padding: 3rem 2rem;
    border-radius: 20px;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.contact-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.contact-item i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.contact-item p {
    color: #444;
    font-size: 1.1rem;
}

/* 页脚样式 */
.footer-content {
    background: var(--dark-bg);
    color: white;
    height: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
}


.footer-info{
    display: flex;
    gap: 10px;
    color: white;
}

/* 动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 2rem;
    }
    
    .nav-links {
        display: none;
    }
}