/* 全局样式重置和基础设置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --accent-color: #3b82f6;
    --text-color: #333;
    --light-text: #666;
    --background-color: #f8fafc;
    --white: #fff;
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏样式 */
.navbar {
    background-color: var(--white);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

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

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

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

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

.hamburger {
    display: none;
    font-size: 1.5rem;
    color: var(--text-color);
    cursor: pointer;
}

/* 英雄区域样式 */
.hero {
    background: linear-gradient(135deg, #1a365d 0%, #2563eb 50%, #1e40af 100%);
    color: var(--white);
    padding: 160px 0 120px;
    text-align: center;
    position: relative;
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background-attachment: fixed;
    background-size: cover;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(255, 255, 255, 0.03) 0%, transparent 50%),
        url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><pattern id="tech-pattern" width="50" height="50" patternUnits="userSpaceOnUse"><path d="M 0 25 L 25 0 L 50 25 L 25 50 Z" fill="none" stroke="rgba(255,255,255,0.08)" stroke-width="0.5"/><circle cx="25" cy="25" r="1" fill="rgba(255,255,255,0.15)"/></pattern></defs><rect width="100%" height="100%" fill="url(%23tech-pattern)"/></svg>');
    opacity: 0.8;
}

.hero::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.3) 0%, rgba(30, 64, 175, 0.1) 50%, transparent 100%);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    z-index: 0;
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.6; }
    50% { transform: translate(-50%, -50%) scale(1.1); opacity: 0.8; }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

.hero h2 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.1;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    animation: fadeInUp 0.8s ease-out;
}

.hero p {
    font-size: 1.5rem;
    margin-bottom: 3rem;
    opacity: 0.95;
    text-shadow: 0 1px 5px rgba(0, 0, 0, 0.1);
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

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

.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    border-radius: var(--border-radius);
    font-weight: 700;
    text-decoration: none;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    margin: 0 0.75rem;
    border: none;
    cursor: pointer;
    font-size: 1.125rem;
    animation: fadeInUp 0.8s ease-out 0.4s both;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: all 0.6s ease;
}

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

.btn-primary {
    background-color: var(--white);
    color: var(--primary-color);
    transform: translateY(0);
}

.btn-primary:hover {
    transform: translateY(-3px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--white);
    border: 2px solid var(--white);
    transform: translateY(0);
}

.btn-secondary:hover {
    background-color: var(--white);
    color: var(--primary-color);
    transform: translateY(-3px);
}

/* 通用section样式 */
section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.section-title p {
    font-size: 1.125rem;
    color: var(--light-text);
    max-width: 600px;
    margin: 0 auto;
}

/* 关于我们样式 */
.about {
    background-color: var(--white);
}

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

.about-text h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.about-text p {
    margin-bottom: 1.5rem;
    color: var(--light-text);
    line-height: 1.8;
}

.stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

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

.stat-item h4 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-item p {
    color: var(--light-text);
    font-size: 0.875rem;
    margin: 0;
}

.about-image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.about-image img:hover {
    transform: scale(1.02);
}

/* 服务项目样式 */
.services {
    background-color: var(--background-color);
}

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

.service-item {
    background-color: var(--white);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
    border: 1px solid #e2e8f0;
}

.service-item:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 2rem;
}

.service-item h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.service-item p {
    color: var(--light-text);
    line-height: 1.6;
}

/* 成功案例样式 */
.cases {
    background-color: var(--white);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.case-item {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid #e2e8f0;
}

.case-item:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.case-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: var(--transition);
}

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

.case-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: var(--white);
    padding: 2rem 1.5rem 1.5rem;
    transition: var(--transition);
}

.case-item:hover .case-info {
    background: linear-gradient(transparent, rgba(37, 99, 235, 0.9));
}

.case-info h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.case-info p {
    font-size: 0.875rem;
    opacity: 0.9;
    margin: 0;
}

/* 联系我们样式 */
.contact {
    background-color: var(--background-color);
}

.contact-wrapper {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

/* 联系信息卡片 */
.contact-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.contact-card {
    background-color: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
    border: 1px solid #e2e8f0;
}

.contact-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.contact-card .contact-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin: 0 auto 1.5rem;
    transition: var(--transition);
}

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

.contact-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-color);
}

.contact-card p {
    color: var(--light-text);
    margin: 0;
    line-height: 1.6;
}



/* 联系行动号召 */
.contact-cta {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    padding: 4rem 2rem;
    border-radius: var(--border-radius);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.contact-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><pattern id="dots" width="50" height="50" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="2" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100%" height="100%" fill="url(%23dots)"/></svg>');
    opacity: 0.3;
}

.contact-cta h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.contact-cta p {
    font-size: 1.125rem;
    margin-bottom: 2.5rem;
    opacity: 0.95;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
    z-index: 1;
}

.cta-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

.cta-buttons .btn {
    margin: 0;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .contact-cards {
        grid-template-columns: 1fr;
    }
    
    .contact-map {
        padding: 2rem;
    }
    
    .map-placeholder {
        padding: 1.5rem;
    }
    
    .contact-cta {
        padding: 3rem 1.5rem;
    }
    
    .contact-cta h3 {
        font-size: 1.5rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-buttons .btn {
        width: 100%;
        max-width: 250px;
    }
}

@media (max-width: 480px) {
    .contact-card {
        padding: 1.5rem;
    }
    
    .contact-map {
        padding: 1.5rem;
    }
    
    .contact-cta {
        padding: 2rem 1rem;
    }
    
    .contact-cta h3 {
        font-size: 1.25rem;
    }
    
    .contact-cta p {
        font-size: 1rem;
    }
}

/* 页脚样式 */
.footer {
    background-color: var(--text-color);
    color: var(--white);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-info h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.footer-info p {
    margin-bottom: 1.5rem;
    opacity: 0.8;
    line-height: 1.6;
}

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

.social-links a {
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    text-decoration: none;
}

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

.footer-links h4,
.footer-services h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--white);
}

.footer-links ul,
.footer-services ul {
    list-style: none;
}

.footer-links li,
.footer-services li {
    margin-bottom: 0.75rem;
}

.footer-links a,
.footer-services a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover,
.footer-services a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.6;
    font-size: 0.875rem;
}

.footer-bottom a {
    color: var(--white);
    text-decoration: none;
    transition: var(--transition);
}

.footer-bottom a:hover {
    color: var(--primary-color);
    text-decoration: none;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .hero h2 {
        font-size: 2.5rem;
    }

    .section-title h2 {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: var(--white);
        transition: var(--transition);
        z-index: 999;
    }

    .nav-links.active {
        left: 0;
    }

    .nav-links ul {
        flex-direction: column;
        align-items: center;
        justify-content: center;
        height: 100%;
        gap: 2rem;
    }

    .hamburger {
        display: block;
    }

    .hero {
        padding: 100px 0 60px;
    }

    .hero h2 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .btn {
        padding: 0.625rem 1.5rem;
        margin: 0.5rem;
        font-size: 0.875rem;
    }

    section {
        padding: 60px 0;
    }

    .section-title h2 {
        font-size: 1.75rem;
    }

    .stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }

    .services-grid,
    .cases-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .social-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero h2 {
        font-size: 1.75rem;
    }

    .section-title h2 {
        font-size: 1.5rem;
    }

    .about-text h3 {
        font-size: 1.25rem;
    }

    .stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .contact-info,
    .contact-form {
        padding: 1.5rem;
    }

    .footer {
        padding: 3rem 0 1.5rem;
    }
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

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

/* 滚动时导航栏样式变化 */
.navbar.scrolled {
    padding: 0.5rem 0;
}