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

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    width: 40px;
    height: 40px;
    border-radius: 8px;
}

.company-name {
    font-size: 20px;
    font-weight: 600;
    color: #2c3e50;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-menu a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-menu a:hover {
    color: #667eea;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transition: width 0.3s ease;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #333;
    transition: all 0.3s ease;
}

/* 轮播图样式 */
.hero-section {
    position: relative;
    height: 100vh;
    overflow: hidden;
}

.carousel-container {
    position: relative;
    width: 100%;
    height: 100%;
}

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-slide.active {
    opacity: 1;
}

.slide-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

/* 为每个轮播图设置不同的背景 */
.carousel-slide:nth-child(1) .slide-bg {
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 50%, #1e40af 100%);
}

.carousel-slide:nth-child(2) .slide-bg {
    background: linear-gradient(135deg, #7c3aed 0%, #a855f7 50%, #6d28d9 100%);
}

.carousel-slide:nth-child(3) .slide-bg {
    background: linear-gradient(135deg, #059669 0%, #10b981 50%, #047857 100%);
}

.slide-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
    z-index: 1;
}

/* 添加动态粒子效果 */
.slide-bg::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.1) 1px, transparent 1px),
        radial-gradient(circle at 80% 70%, rgba(255, 255, 255, 0.1) 1px, transparent 1px),
        radial-gradient(circle at 60% 20%, rgba(255, 255, 255, 0.08) 1px, transparent 1px),
        radial-gradient(circle at 30% 80%, rgba(255, 255, 255, 0.08) 1px, transparent 1px);
    background-size: 200px 200px, 300px 300px, 150px 150px, 250px 250px;
    animation: particleFloat 20s ease-in-out infinite;
    z-index: 1;
}

@keyframes particleFloat {
    0%, 100% { 
        transform: translateX(0) translateY(0) rotate(0deg);
        opacity: 0.6;
    }
    25% { 
        transform: translateX(10px) translateY(-10px) rotate(90deg);
        opacity: 0.8;
    }
    50% { 
        transform: translateX(-5px) translateY(-20px) rotate(180deg);
        opacity: 1;
    }
    75% { 
        transform: translateX(-10px) translateY(-5px) rotate(270deg);
        opacity: 0.8;
    }
}

.slide-content {
    position: relative;
    z-index: 5;
    text-align: center;
    color: white;
    max-width: 900px;
    padding: 0 30px;
}

.carousel-slide.active .slide-content {
    animation: slideInUp 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideInUp {
    0% {
        opacity: 0;
        transform: translateY(80px) scale(0.9);
    }
    60% {
        opacity: 0.8;
        transform: translateY(-10px) scale(1.02);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.slide-content h1 {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 25px;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    background: linear-gradient(135deg, #ffffff 0%, #f0f9ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.carousel-slide.active .slide-content h1 {
    animation: titleSlide 1.5s cubic-bezier(0.4, 0, 0.2, 1) 0.3s both;
}

@keyframes titleSlide {
    0% {
        opacity: 0;
        transform: translateY(50px);
        filter: blur(5px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
        filter: blur(0);
    }
}

.slide-content p {
    font-size: 1.4rem;
    margin-bottom: 40px;
    opacity: 0.95;
    line-height: 1.8;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    font-weight: 300;
}

.carousel-slide.active .slide-content p {
    animation: textFade 1.5s cubic-bezier(0.4, 0, 0.2, 1) 0.6s both;
}

@keyframes textFade {
    0% {
        opacity: 0;
        transform: translateY(30px);
    }
    100% {
        opacity: 0.95;
        transform: translateY(0);
    }
}

.cta-button {
    display: inline-block;
    padding: 18px 45px;
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    color: white;
    text-decoration: none;
    border-radius: 60px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.4);
    border: 2px solid rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.cta-button::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: left 0.5s ease;
}

.cta-button:hover::before {
    left: 100%;
}

.cta-button:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 15px 40px rgba(59, 130, 246, 0.6);
    border-color: rgba(255, 255, 255, 0.4);
}

.carousel-slide.active .cta-button {
    animation: buttonPop 1.5s cubic-bezier(0.4, 0, 0.2, 1) 0.9s both;
}

@keyframes buttonPop {
    0% {
        opacity: 0;
        transform: translateY(30px) scale(0.8);
    }
    80% {
        transform: translateY(-5px) scale(1.1);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* 轮播图导航 */
.carousel-nav button {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.15);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(15px);
    z-index: 10;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.carousel-nav button:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.carousel-nav button:active {
    transform: translateY(-50%) scale(0.95);
}

.prev-btn {
    left: 40px;
}

.next-btn {
    right: 40px;
}

.carousel-nav button i {
    transition: transform 0.3s ease;
}

.carousel-nav button:hover i {
    transform: scale(1.2);
}

.carousel-dots {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 15px;
    z-index: 10;
    padding: 10px 20px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 25px;
    backdrop-filter: blur(10px);
}

.dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    border: 2px solid transparent;
}

.dot:hover {
    background: rgba(255, 255, 255, 0.6);
    transform: scale(1.1);
}

.dot.active {
    background: white;
    transform: scale(1.3);
    border-color: rgba(255, 255, 255, 0.5);
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.5);
}

.dot.active::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 6px;
    height: 6px;
    background: #3b82f6;
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        opacity: 0.7;
        transform: translate(-50%, -50%) scale(1.2);
    }
}

/* 服务项目样式 */
.services-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: #2c3e50;
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: #7f8c8d;
    margin-bottom: 60px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.service-card {
    background: white;
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    transition: left 0.5s ease;
}

.service-card:hover::before {
    left: 0;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
}

.service-card.featured {
    border: 2px solid #667eea;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.service-card.featured .service-icon {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
    position: relative;
    z-index: 1;
}

.service-icon i {
    font-size: 2rem;
    color: white;
}

.service-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 15px;
    position: relative;
    z-index: 1;
}

.service-card p {
    color: #666;
    margin-bottom: 20px;
    line-height: 1.8;
    position: relative;
    z-index: 1;
}

.service-card.featured p {
    color: rgba(255, 255, 255, 0.9);
}

.service-features {
    list-style: none;
    position: relative;
    z-index: 1;
}

.service-features li {
    padding: 8px 0;
    color: #7f8c8d;
    position: relative;
    padding-left: 20px;
}

.service-card.featured .service-features li {
    color: rgba(255, 255, 255, 0.8);
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #667eea;
    font-weight: bold;
}

.service-card.featured .service-features li::before {
    color: white;
}

/* 关于我们样式 */
.about-section {
    padding: 100px 0;
    background: white;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 30px;
    color: #2c3e50;
}

.about-text p {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-stats {
    display: flex;
    gap: 40px;
    margin-top: 40px;
}

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

.stat-item h3 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #667eea;
    margin-bottom: 10px;
}

.stat-item p {
    color: #7f8c8d;
    font-weight: 500;
}

.about-image img {
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1);
}

.about-placeholder {
    width: 100%;
    height: 400px;
    border-radius: 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
}

.about-placeholder::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="20" cy="20" r="2" fill="rgba(255,255,255,0.3)"/><circle cx="80" cy="30" r="1.5" fill="rgba(255,255,255,0.2)"/><circle cx="60" cy="70" r="2.5" fill="rgba(255,255,255,0.25)"/><circle cx="30" cy="80" r="1" fill="rgba(255,255,255,0.3)"/><circle cx="70" cy="50" r="1.8" fill="rgba(255,255,255,0.2)"/></svg>') repeat;
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-10px) rotate(180deg); }
}

/* 联系我们样式 */
.contact-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: white;
}

.contact-section .section-title,
.contact-section .section-subtitle {
    color: white;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    margin-top: 50px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 30px;
}

.contact-item i {
    font-size: 1.5rem;
    color: #667eea;
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-item h4 {
    font-size: 1.2rem;
    margin-bottom: 5px;
}

.contact-item p {
    color: rgba(255, 255, 255, 0.8);
}

.contact-form {
    background: rgba(255, 255, 255, 0.1);
    padding: 40px;
    border-radius: 20px;
    backdrop-filter: blur(10px);
}

.form-group {
    margin-bottom: 20px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: none;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.9);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    background: white;
    box-shadow: 0 0 20px rgba(102, 126, 234, 0.3);
}

.submit-btn {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
}

/* 页脚样式 */
.footer {
    background: #1a252f;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.footer-logo img {
    width: 40px;
    height: 40px;
    border-radius: 8px;
}

.footer-logo span {
    font-size: 1.2rem;
    font-weight: 600;
}

.footer-section h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: #667eea;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #667eea;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: #667eea;
    transform: translateY(-3px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 20px;
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: white;
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding-top: 50px;
        transition: left 0.3s ease;
        box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .slide-content h1 {
        font-size: 2.5rem;
    }
    
    .slide-content p {
        font-size: 1.1rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-stats {
        justify-content: center;
        gap: 30px;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .carousel-nav button {
        width: 50px;
        height: 50px;
        font-size: 1rem;
    }
    
    .prev-btn {
        left: 20px;
    }
    
    .next-btn {
        right: 20px;
    }
    
    .slide-content h1 {
        font-size: 2.8rem;
    }
    
    .slide-content p {
        font-size: 1.2rem;
    }
    
    .carousel-dots {
        bottom: 20px;
        padding: 8px 15px;
        gap: 12px;
    }
    
    .dot {
        width: 12px;
        height: 12px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .slide-content h1 {
        font-size: 2.2rem;
        line-height: 1.3;
    }
    
    .slide-content p {
        font-size: 1.1rem;
        margin-bottom: 30px;
    }
    
    .cta-button {
        padding: 15px 35px;
        font-size: 1rem;
    }
    
    .carousel-nav button {
        width: 45px;
        height: 45px;
        font-size: 0.9rem;
    }
    
    .prev-btn {
        left: 15px;
    }
    
    .next-btn {
        right: 15px;
    }
    
    .carousel-dots {
        bottom: 15px;
        padding: 6px 12px;
        gap: 10px;
    }
    
    .dot {
        width: 10px;
        height: 10px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .service-card {
        padding: 30px 20px;
    }
    
    .about-stats {
        flex-direction: column;
        gap: 20px;
    }
}

/* 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-out;
}

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

/* 加载动画 - 修复闪烁问题 */
.loading {
    opacity: 1;
    transform: translateY(0);
    transition: all 0.6s ease;
}

.loading.animate-in {
    animation: fadeInUp 0.8s ease-out;
}

/* 确保about和contact内容始终可见 */
.about-section, .contact-section {
    opacity: 1;
    visibility: visible;
}

.about-content, .contact-content {
    opacity: 1;
    visibility: visible;
}