/*全局样式重置 */
* {
    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: #e6e6e6;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 50%, #0f0f0f 100%);
    background-attachment: fixed;
    scroll-behavior: smooth;
}

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

/*导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
    z-index: 1000;
    padding: 15px 0;
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.navbar.scrolled {
    padding: 10px 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.6);
}

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

.nav-logo h1 {
    font-size: 1.7rem;
    font-weight: 300;
    color: #ffffff;
    display: flex;
    align-items: center;
    letter-spacing: 1px;
}

.nav-logo span {
    font-size: 0.85rem;
    color: #a0a0a0;
    margin-left: 15px;
    font-weight: 300;
    opacity: 0.7;
    letter-spacing: 0.5px;
}

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

.nav-menu li {
    margin-left: 35px;
}

.nav-menu a {
    text-decoration: none;
    color: #c0c0c0;
    font-weight: 300;
    transition: all 0.3s ease;
    position: relative;
    padding: 10px 0;
    display: inline-block;
    font-size: 1.05rem;
    letter-spacing: 0.5px;
}

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

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: linear-gradient(90deg, #00ffff, #00ccff);
    transition: width 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

/* Banner区样式 */
.hero-banner {
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 50%, #0f0f0f 100%);
    color: white;
    padding: 180px 0 140px;
    text-align: center;
    margin-top: 70px;
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.hero-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 15% 25%, rgba(0, 255, 255, 0.03) 0%, transparent 30%),
        radial-gradient(circle at 85% 75%, rgba(0, 204, 255, 0.03) 0%, transparent 30%);
}

.banner-content h1 {
    font-size: 3.8rem;
    margin-bottom: 25px;
    line-height: 1.1;
    font-weight: 300;
    letter-spacing: 2px;
    background: linear-gradient(90deg, #ffffff, #e6e6e6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.8s ease-out;
    text-shadow: 0 2px 10px rgba(255, 255, 255, 0.1);
}

.banner-content p {
    font-size: 1.3rem;
    margin-bottom: 50px;
    opacity: 0.85;
    max-width: 850px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 0.8s ease-out 0.2s forwards;
    opacity: 0;
    color: #b0b0b0;
    line-height: 1.8;
    font-weight: 300;
    letter-spacing: 0.5px;
}

.btn-primary {
    display: inline-block;
    background: linear-gradient(135deg, #00ffff 0%, #00ccff 100%);
    color: #000000;
    padding: 22px 50px;
    text-decoration: none;
    border-radius: 35px;
    font-weight: 500;
    transition: all 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
    border: none;
    box-shadow: 0 10px 30px rgba(0, 255, 255, 0.3);
    animation: fadeInUp 0.8s ease-out 0.4s forwards;
    opacity: 0;
    position: relative;
    overflow: hidden;
    letter-spacing: 1px;
    font-size: 1.1rem;
    text-transform: uppercase;
}

.btn-primary:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 255, 255, 0.4);
    background: linear-gradient(135deg, #00ccff 0%, #00ffff 100%);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: 0.5s;
}

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

/*核心服务区样式 */
.core-services {
    padding: 140px 0;
    background: rgba(15, 15, 15, 0.9);
    position: relative;
}

.core-services::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(transparent 95%, rgba(0, 255, 255, 0.02) 100%);
    pointer-events: none;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(520px, 1fr));
    gap: 70px;
    margin-top: 60px;
    position: relative;
    z-index: 1;
}

.service-card {
    background: rgba(25, 25, 25, 0.8);
    padding: 60px 50px;
    border-radius: 25px;
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.4);
    transition: all 0.5s cubic-bezier(0.22, 0.61, 0.36, 1);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(15px);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, #00ffff, #00ccff);
}

.service-card:hover {
    transform: translateY(-15px) scale(1.02);
    box-shadow: 0 40px 100px rgba(0, 0, 0, 0.5);
    border-color: rgba(0, 255, 255, 0.2);
}

.service-card h3 {
    font-size: 2.4rem;
    color: #ffffff;
    margin-bottom: 30px;
    padding-bottom: 25px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    font-weight: 300;
    letter-spacing: 1px;
}

.service-card h3::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100px;
    height: 1px;
    background: linear-gradient(90deg, #00ffff, #00ccff);
}

.service-card p {
    color: #c0c0c0;
    margin-bottom: 35px;
    line-height: 1.9;
    font-size: 1.1rem;
    text-align: justify;
    font-weight: 300;
    letter-spacing: 0.3px;
}

.advantages h4 {
    color: #00ffff;
    margin-bottom: 25px;
    font-size: 1.4rem;
    font-weight: 300;
    letter-spacing: 0.5px;
}

.advantages ul {
    list-style: none;
}

.advantages li {
    padding: 15px 0;
    padding-left: 35px;
    position: relative;
    color: #d0d0d0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
    font-size: 1.05rem;
    font-weight: 300;
}

.advantages li:last-child {
    border-bottom: none;
}

.advantages li:hover {
    color: #ffffff;
    padding-left: 40px;
    background: rgba(0, 255, 255, 0.03);
    border-radius: 5px;
}

.advantages li::before {
    content: '▶';
    position: absolute;
    left: 0;
    color: #00ccff;
    font-weight: bold;
}

/* 页面头部样式 */
.page-header {
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 50%, #0f0f0f 100%);
    color: white;
    padding: 180px 0 140px;
    text-align: center;
    margin-top: 70px;
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        url("data:image/svg+xml,%3Csvg width='80' height='80' viewBox='0 0 80 80' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%2300ffff' fill-opacity='0.02'%3E%3Ccircle cx='40' cy='40' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.page-header h1 {
    font-size: 4rem;
    margin-bottom: 25px;
    font-weight: 300;
    letter-spacing: 2px;
    background: linear-gradient(90deg, #ffffff, #e6e6e6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 产品介绍页面样式 */
.products-section {
    padding: 140px 0;
    background: rgba(15, 15, 15, 0.95);
    position: relative;
}

.products-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 25% 75%, rgba(0, 255, 255, 0.02) 0%, transparent 40%),
        radial-gradient(circle at 75% 25%, rgba(0, 204, 255, 0.02) 0%, transparent 40%);
    pointer-events: none;
}

.products-section h2 {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 90px;
    color: #ffffff;
    position: relative;
    font-weight: 300;
    letter-spacing: 1px;
}

.products-section h2::after {
    content: '';
    position: absolute;
    bottom: -30px;
    left: 50%;
    transform: translateX(-50%);
    width: 150px;
    height: 2px;
    background: linear-gradient(90deg, #00ffff, #00ccff);
    border-radius: 1px;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(520px, 1fr));
    gap: 70px;
    margin-bottom: 100px;
    position: relative;
    z-index: 1;
}

.product-item {
    background: rgba(25, 25, 25, 0.8);
    padding: 50px;
    border-radius: 25px;
    box-shadow: 0 20px 70px rgba(0, 0, 0, 0.3);
    transition: all 0.5s cubic-bezier(0.22, 0.61, 0.36, 1);
    border-top: 2px solid #00ffff;
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.product-item:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: 0 35px 90px rgba(0, 0, 0, 0.4);
    border-color: rgba(0, 255, 255, 0.3);
}

.product-item h3 {
    font-size: 2rem;
    color: #00ffff;
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    font-weight: 300;
    letter-spacing: 0.5px;
}

.product-item h4 {
    color: #00ccff;
    margin: 30px 0 20px;
    font-size: 1.3rem;
    font-weight: 300;
    letter-spacing: 0.3px;
}

.product-item ul {
    list-style: none;
}

.product-item li {
    padding: 15px 0;
    padding-left: 30px;
    position: relative;
    color: #d0d0d0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    transition: all 0.3s ease;
    font-size: 1.05rem;
    font-weight: 300;
}

.product-item li:hover {
    background: rgba(0, 255, 255, 0.03);
    padding-left: 35px;
    border-radius: 5px;
}

.product-item li:last-child {
    border-bottom: none;
}

.product-item li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: #00ccff;
    font-size: 1.8rem;
    line-height: 1;
    top: 50%;
    transform: translateY(-50%);
}

/*内容页面通用样式 */
.content-section {
    padding: 140px 0;
    background: rgba(15, 15, 15, 0.95);
}

.agreement-content, .privacy-content, .about-content {
    max-width: 1100px;
    margin: 0 auto;
    padding: 50px;
    background: rgba(25, 25, 25, 0.8);
    border-radius: 25px;
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.agreement-content h2, .privacy-content h2, .about-content h2 {
    font-size: 2.5rem;
    color: #ffffff;
    margin: 45px 0 30px;
    padding-bottom: 25px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    font-weight: 300;
    letter-spacing: 1px;
}

.agreement-content h2::after, .privacy-content h2::after, .about-content h2::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 120px;
    height: 1px;
    background: linear-gradient(90deg, #00ffff, #00ccff);
}

.agreement-content h3, .privacy-content h3 {
    font-size: 1.8rem;
    color: #00ccff;
    margin: 35px 0 20px;
    font-weight: 300;
    letter-spacing: 0.5px;
}

.agreement-content ol, .privacy-content ol, .about-content ol {
    margin: 25px 0;
    padding-left: 35px;
}

.agreement-content ul, .privacy-content ul, .about-content ul {
    margin: 25px 0;
    padding-left: 35px;
}

.agreement-content li, .privacy-content li, .about-content li {
    margin: 15px 0;
    color: #d0d0d0;
    line-height: 2;
    position: relative;
    padding-left: 12px;
    font-size: 1.05rem;
    font-weight: 300;
}

.agreement-content p, .privacy-content p, .about-content p {
    color: #c0c0c0;
    line-height: 2;
    margin: 20px 0;
    text-align: justify;
    font-size: 1.05rem;
    font-weight: 300;
    letter-spacing: 0.3px;
}

.company-signature {
    text-align: right;
    font-style: italic;
    margin-top: 60px;
    color: #a0a0a0;
    padding-top: 35px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 1.1rem;
    font-weight: 300;
}

/* 关于我们页面样式 */
.about-section {
    padding: 140px 0;
    background: rgba(15, 15, 15, 0.9);
    position: relative;
}

.about-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(transparent 90%, rgba(0, 255, 255, 0.01) 100%);
    pointer-events: none;
}

/*联系方式页面样式 */
.contact-section {
    padding: 140px 0;
    background: rgba(15, 15, 15, 0.95);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(480px, 1fr));
    gap: 80px;
    margin-top: 60px;
}

.contact-info h2, .contact-form h2 {
    font-size: 2.5rem;
    color: #ffffff;
    margin-bottom: 40px;
    padding-bottom: 25px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    font-weight: 300;
    letter-spacing: 1px;
}

.contact-info h2::after, .contact-form h2::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 120px;
    height: 1px;
    background: linear-gradient(90deg, #00ffff, #00ccff);
}

.contact-details {
    list-style: none;
}

.contact-item {
    padding: 25px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    font-size: 1.1rem;
    transition: all 0.3s ease;
    color: #d0d0d0;
    font-weight: 300;
}

.contact-item:hover {
    background: rgba(0, 255, 255, 0.03);
    border-radius: 8px;
    transform: translateX(8px);
    border-color: rgba(0, 255, 255, 0.2);
}

.contact-item strong {
    color: #00ccff;
    display: inline-block;
    width: 140px;
    font-weight: 300;
    letter-spacing: 0.5px;
}

.form-group {
    margin-bottom: 30px;
}

.form-group label {
    display: block;
    margin-bottom: 15px;
    color: #00ffff;
    font-weight: 300;
    font-size: 1.1rem;
    letter-spacing: 0.3px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 18px 25px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    font-size: 1.05rem;
    transition: all 0.3s ease;
    background: rgba(30, 30, 30, 0.6);
    color: #e0e0e0;
    backdrop-filter: blur(15px);
    font-weight: 300;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #00ffff;
    box-shadow: 0 0 0 3px rgba(0, 255, 255, 0.1);
    background: rgba(30, 30, 30, 0.8);
}

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

/* 页脚样式 */
.footer {
    background: linear-gradient(135deg, #080808 0%, #151515 100%);
    color: white;
    padding: 80px 0 50px;
    margin-top: 140px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-top {
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 45px;
    margin-bottom: 35px;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
}

.footer-column p {
    color: #909090;
    margin-bottom: 15px;
    font-size: 1.05rem;
    transition: color 0.3s ease;
    font-weight: 300;
    letter-spacing: 0.3px;
}

.footer-column p:hover {
    color: #00ffff;
}

.footer-bottom {
    text-align: center;
    padding-top: 35px;
}

.footer-bottom p {
    color: #707070;
    font-size: 0.95rem;
    line-height: 1.7;
    font-weight: 300;
    letter-spacing: 0.3px;
}

/*动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/*卡浮动动画 */
.service-card, .product-item {
    animation: float 8s ease-in-out infinite;
}

.service-card:nth-child(2), .product-item:nth-child(2) {
    animation-delay: 1.5s;
}

@keyframes float {
    0% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-15px);
    }
    100% {
        transform: translateY(0px);
    }
}

/*响应式设计 */
@media (max-width: 1024px) {
    .service-grid,
    .product-grid {
        grid-template-columns: 1fr;
        gap: 60px;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 70px;
    }
    
    .banner-content h1 {
        font-size: 3rem;
    }
    
    .products-section h2 {
        font-size: 2.6rem;
    }
}

@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 25px;
        align-items: center;
    }

    .nav-logo h1 {
        font-size: 1.5rem;
        text-align: center;
    }

    .nav-logo span {
        display: block;
        margin-left: 0;
        margin-top: 8px;
        font-size: 0.8rem;
        text-align: center;
    }

    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
        width: 100%;
    }

    .nav-menu li {
        margin: 10px 15px;
    }

    .hero-banner {
        padding: 160px 0 120px;
        margin-top: 180px;
    }

    .banner-content h1 {
        font-size: 2.4rem;
    }

    .banner-content p {
        font-size: 1.1rem;
    }

    .service-card,
    .product-item {
        padding: 40px 30px;
    }

    .service-card h3,
    .product-item h3 {
        font-size: 1.8rem;
    }

    .page-header {
        padding: 160px 0 120px;
        margin-top: 180px;
    }

    .page-header h1 {
        font-size: 2.8rem;
    }

    .products-section h2 {
        font-size: 2.4rem;
    }

    .agreement-content, .privacy-content, .about-content {
        padding: 35px 25px;
        margin: 0 20px;
    }

    .footer-container {
        flex-direction: column;
        gap: 30px;
        align-items: center;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container,
    .nav-container {
        padding: 0 15px;
    }

    .hero-banner {
        padding: 140px 0 100px;
        margin-top: 200px;
    }

    .banner-content h1 {
        font-size: 2rem;
    }

    .btn-primary {
        padding: 18px 35px;
        font-size: 1rem;
    }

    .service-card,
    .product-item {
        padding: 30px 25px;
    }

    .contact-item strong {
        display: block;
        width: auto;
        margin-bottom: 10px;
    }

    .nav-menu li {
        margin: 8px 12px;
    }
    
    .products-section h2 {
        font-size: 2.2rem;
    }
}

/*滚动条样式 */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: rgba(15, 15, 15, 0.5);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(#00ffff, #00ccff);
    border-radius: 6px;
    border: 2px solid rgba(15, 15, 15, 0.5);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(#00ccff, #00ffff);
}