/* 全局样式 */
:root {
    --primary-color: #00c3ff; /* 霓虹蓝 */
    --secondary-color: #ff00e6; /* 霓虹粉 */
    --dark-bg: #0a0a14; /* 深色背景 */
    --dark-bg-light: #12121f; /* 稍亮的深色背景 */
    --text-color: #ffffff; /* 文本颜色 */
    --text-color-muted: #a0a0b0; /* 次要文本颜色 */
    --card-bg: rgba(20, 20, 35, 0.7); /* 卡片背景 */
    --transition: all 0.3s ease; /* 过渡效果 */
}

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

html {
    scroll-behavior: smooth; /* 平滑滚动 */
}

body {
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* 通用样式 */
a {
    text-decoration: none;
    color: var(--text-color);
    transition: var(--transition);
}

ul {
    list-style: none;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 3px;
}

.section-header p {
    color: var(--text-color-muted);
    font-size: 1.1rem;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    border-radius: 30px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    color: var(--text-color);
    box-shadow: 0 5px 15px rgba(0, 195, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 195, 255, 0.5);
}

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

.btn-outline:hover {
    background: var(--primary-color);
    color: var(--dark-bg);
    transform: translateY(-3px);
}

/* 导航栏 */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(10, 10, 20, 0.9);
    backdrop-filter: blur(10px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    max-width: 1400px;
    margin: 0 auto;
}

.logo span {
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: 1px;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    position: relative;
    font-weight: 500;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: var(--transition);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    width: 30px;
    height: 3px;
    background-color: var(--primary-color);
    border-radius: 3px;
    transition: var(--transition);
}

/* 首页区域 */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 5%;
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 50%, rgba(0, 195, 255, 0.1), transparent 40%),
                radial-gradient(circle at 80% 30%, rgba(255, 0, 230, 0.1), transparent 40%);
    z-index: -1;
}

.hero-content {
    flex: 1;
    max-width: 600px;
    z-index: 1;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: var(--text-color-muted);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.hero-img {
    width: 400px;
    height: 400px;
    object-fit: contain;
    animation: pulse 3s infinite alternate;
    filter: drop-shadow(0 0 20px rgba(0, 195, 255, 0.5));
}

.tech-circle::before,
.tech-circle::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    border: 2px solid rgba(0, 195, 255, 0.3);
}

.tech-circle::before {
    width: 450px;
    height: 450px;
    animation: rotate 20s linear infinite;
}

.tech-circle::after {
    width: 350px;
    height: 350px;
    border-color: rgba(255, 0, 230, 0.3);
    animation: rotate 15s linear infinite reverse;
}

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

@keyframes pulse {
    0% {
        box-shadow: 0 0 30px rgba(0, 195, 255, 0.3);
    }
    100% {
        box-shadow: 0 0 50px rgba(255, 0, 230, 0.5);
    }
}

/* 服务区域 */
.services {
    padding: 6rem 5%;
    max-width: 1400px;
    margin: 0 auto;
}

.services-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    background-color: var(--card-bg);
    border-radius: 15px;
    padding: 2rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-10px);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.service-card p {
    color: var(--text-color-muted);
    margin-bottom: 1.5rem;
}

.service-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
}

.service-features li {
    position: relative;
    padding-left: 1.5rem;
    font-size: 0.9rem;
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

/* 案例展示 */
.cases {
    padding: 6rem 5%;
    background-color: var(--dark-bg-light);
}

.cases-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.case-item {
    background-color: var(--card-bg);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.case-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

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

.case-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 10px 10px 0 0;
    transition: transform 0.3s ease;
}

.case-item:hover .case-img {
    transform: scale(1.05);
}

.case-placeholder::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.1), transparent);
    transform: rotate(30deg);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% {
        transform: translateX(-100%) rotate(30deg);
    }
    100% {
        transform: translateX(100%) rotate(30deg);
    }
}

.case-info {
    padding: 1.5rem;
}

.case-info h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.case-info p {
    color: var(--text-color-muted);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.case-tag {
    display: inline-block;
    padding: 0.3rem 1rem;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

/* 关于我们 */
.about {
    padding: 6rem 5%;
    max-width: 1400px;
    margin: 0 auto;
}

.about-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-content h3 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.about-content p {
    margin-bottom: 1.5rem;
    color: var(--text-color-muted);
}

.about-stats {
    display: flex;
    justify-content: space-between;
    margin-top: 2.5rem;
}

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

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-text {
    color: var(--text-color-muted);
    font-size: 0.9rem;
}

.about-image {
    position: relative;
    height: 400px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.about-img {
    width: 100%;
    height: 300px;
    object-fit: contain;
    border-radius: 10px;
    filter: drop-shadow(0 0 15px rgba(0, 195, 255, 0.3));
    transition: transform 0.5s ease;
}

.about-image:hover .about-img {
    transform: scale(1.03);
}

.tech-grid::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(to right, transparent 9px, rgba(0, 195, 255, 0.1) 10px),
        linear-gradient(to bottom, transparent 9px, rgba(255, 0, 230, 0.1) 10px);
    background-size: 10px 10px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% {
        background-position: 0 0;
    }
    100% {
        background-position: 50px 50px;
    }
}

/* 联系我们 */
.contact {
    padding: 6rem 5%;
    background-color: var(--dark-bg-light);
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    max-width: 1400px;
    margin: 0 auto;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

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

.contact-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.contact-item h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.contact-item p {
    color: var(--text-color-muted);
}

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

.social-link {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--card-bg);
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.social-link i {
    font-size: 1.2rem;
    color: var(--primary-color);
    transition: var(--transition);
}

.social-link:hover {
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: translateY(-5px);
}

.social-link:hover i {
    color: var(--text-color);
    -webkit-text-fill-color: var(--text-color);
}

.contact-form {
    background-color: var(--card-bg);
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 5px;
    color: var(--text-color);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 10px rgba(0, 195, 255, 0.3);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

/* 页脚 */
footer {
    background-color: var(--dark-bg);
    padding: 4rem 5% 2rem;
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary-color), var(--secondary-color), transparent);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 3rem;
    max-width: 1400px;
    margin: 0 auto;
    margin-bottom: 3rem;
}

.footer-logo span {
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: 1px;
}

.footer-logo p {
    color: var(--text-color-muted);
    margin-top: 1rem;
}

.footer-links {
    display: flex;
    gap: 3rem;
    flex-wrap: wrap;
}

.footer-link-group h3 {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    position: relative;
}

.footer-link-group h3::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 30px;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.footer-link-group ul {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.footer-link-group a {
    color: var(--text-color-muted);
    transition: var(--transition);
}

.footer-link-group a:hover {
    color: var(--primary-color);
    transform: translateX(5px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-color-muted);
    font-size: 0.9rem;
    max-width: 1400px;
    margin: 0 auto;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    z-index: 99;
    box-shadow: 0 5px 15px rgba(0, 195, 255, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.back-to-top.active {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 195, 255, 0.7);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-content h1 {
        font-size: 3rem;
    }
    
    .tech-circle {
        width: 350px;
        height: 350px;
    }
    
    .tech-circle::before {
        width: 400px;
        height: 400px;
    }
    
    .tech-circle::after {
        width: 300px;
        height: 300px;
    }
    
    .about-container,
    .contact-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .about-image {
        order: -1;
    }
}

@media (max-width: 768px) {
    .navbar {
        padding: 1rem 5%;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        flex-direction: column;
        gap: 0;
        background-color: var(--dark-bg);
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
        padding: 1rem 0;
        clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
        transition: var(--transition);
    }
    
    .nav-links.active {
        clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
    }
    
    .nav-links li {
        width: 100%;
    }
    
    .nav-links a {
        display: block;
        padding: 1rem 5%;
    }
    
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 6rem;
        height: auto;
        min-height: 100vh;
    }
    
    .hero-content {
        margin-bottom: 3rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .services-container,
    .cases-container {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        flex-direction: column;
        gap: 2rem;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 2rem;
    }
    
    .footer-links {
        width: 100%;
        justify-content: space-between;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .tech-circle {
        width: 280px;
        height: 280px;
    }
    
    .tech-circle::before {
        width: 320px;
        height: 320px;
    }
    
    .tech-circle::after {
        width: 240px;
        height: 240px;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 2rem;
    }
    
    .contact-form {
        padding: 1.5rem;
    }
}