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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, #1a73e8, #0d47a1);
    color: #fff;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #0d47a1, #1a73e8);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(26, 115, 232, 0.4);
}

.btn-secondary {
    background: transparent;
    color: #1a73e8;
    border: 2px solid #1a73e8;
}

.btn-secondary:hover {
    background: #1a73e8;
    color: #fff;
}

/* 头部导航 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.15);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 24px;
    font-weight: 700;
    color: #1a73e8;
}

.logo i {
    margin-right: 10px;
    font-size: 28px;
}

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

.nav li {
    margin-left: 30px;
}

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

.nav a:hover,
.nav a.active {
    color: #1a73e8;
}

.nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #1a73e8;
    transition: width 0.3s ease;
}

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

.phone a {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: #1a73e8;
    font-weight: 600;
    font-size: 18px;
}

.phone i {
    margin-right: 8px;
}

.menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: #333;
}

/* 英雄区 */
.hero {
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

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

.hero-text h1 {
    font-size: 48px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 20px;
    animation: fadeInUp 0.8s ease;
}

.tagline {
    font-size: 24px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 15px;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.description {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 30px;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-buttons {
    margin-bottom: 40px;
    animation: fadeInUp 0.8s ease 0.6s both;
}

.hero-buttons .btn {
    margin-right: 15px;
    margin-bottom: 15px;
}

.features {
    display: flex;
    gap: 40px;
    animation: fadeInUp 0.8s ease 0.8s both;
}

.feature-item {
    display: flex;
    align-items: center;
    color: rgba(255, 255, 255, 0.9);
}

.feature-item i {
    margin-right: 10px;
    font-size: 20px;
}

.hero-image {
    animation: fadeInRight 1s ease;
}

.hero-image img {
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
}

.hero-wave svg {
    width: 100%;
    height: 100px;
}

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

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* 服务项目 */
.services {
    padding: 100px 0;
    background: #f8f9fa;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 36px;
    font-weight: 700;
    color: #333;
    margin-bottom: 20px;
}

.section-header p {
    font-size: 18px;
    color: #666;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.service-card {
    background: #fff;
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(26, 115, 232, 0.15);
}

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, #1a73e8, #0d47a1);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 32px;
}

.service-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 15px;
    color: #333;
}

.service-card p {
    color: #666;
    font-size: 14px;
    line-height: 1.8;
}

/* 产品展示 */
.products {
    padding: 100px 0;
    background: #fff;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.product-card {
    background: #fff;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.product-image {
    height: 250px;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.product-card:hover .product-image img {
    transform: scale(1.1);
}

.product-info {
    padding: 30px;
}

.product-info h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 15px;
    color: #333;
}

.product-info p {
    color: #666;
    margin-bottom: 20px;
    font-size: 14px;
}

.product-features {
    list-style: none;
}

.product-features li {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
    color: #333;
    font-size: 14px;
}

.product-features i {
    color: #1a73e8;
    margin-right: 10px;
}

/* 应用场景 */
.scenarios {
    padding: 100px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.scenarios .section-header h2,
.scenarios .section-header p {
    color: #fff;
}

.scenarios-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
}

.scenario-item {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: 30px 20px;
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.scenario-item:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-5px);
}

.scenario-item i {
    font-size: 36px;
    color: #fff;
    margin-bottom: 15px;
}

.scenario-item h3 {
    font-size: 16px;
    font-weight: 500;
    color: #fff;
}

/* 成功案例 */
.cases {
    padding: 100px 0;
    background: #f8f9fa;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.case-card {
    background: #fff;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.case-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

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

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.case-info {
    padding: 25px;
}

.case-info h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
    color: #333;
}

.case-info p {
    color: #666;
    font-size: 14px;
}

/* 联系我们 */
.contact {
    padding: 100px 0;
    background: #fff;
}

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

.contact-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.info-item {
    display: flex;
    align-items: flex-start;
    padding: 25px;
    background: #f8f9fa;
    border-radius: 15px;
    transition: all 0.3s ease;
}

.info-item:hover {
    background: #fff;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.info-item i {
    font-size: 28px;
    color: #1a73e8;
    margin-right: 15px;
    flex-shrink: 0;
}

.info-item h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 5px;
    color: #333;
}

.info-item p {
    color: #666;
    font-size: 14px;
}

.info-item a {
    color: #1a73e8;
    text-decoration: none;
}

.contact-form {
    background: linear-gradient(135deg, #1a73e8, #0d47a1);
    padding: 40px;
    border-radius: 20px;
    color: #fff;
}

.contact-form h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 30px;
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px 20px;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
    transition: all 0.3s ease;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.3);
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.2);
}

.form-group textarea {
    resize: none;
    min-height: 120px;
}

.contact-form .btn-primary {
    width: 100%;
    background: #fff;
    color: #1a73e8;
    font-weight: 600;
}

.contact-form .btn-primary:hover {
    background: #f0f0f0;
}

/* 页脚 */
.footer {
    background: #1a1a2e;
    color: #fff;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand .logo {
    margin-bottom: 20px;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    line-height: 1.8;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
}

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

.footer-links li {
    margin-bottom: 12px;
}

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

.footer-links a:hover {
    color: #fff;
}

.footer-contact p {
    display: flex;
    align-items: center;
    margin-bottom: 12px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
}

.footer-contact i {
    margin-right: 10px;
    color: #1a73e8;
}

.footer-contact a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
}

.footer-contact a:hover {
    color: #fff;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .products-grid,
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .scenarios-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        background: #fff;
        padding: 30px;
        transition: left 0.3s ease;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    }
    
    .nav.active {
        left: 0;
    }
    
    .nav ul {
        flex-direction: column;
    }
    
    .nav li {
        margin: 0;
        margin-bottom: 20px;
    }
    
    .nav a {
        font-size: 18px;
    }
    
    .phone {
        display: none;
    }
    
    .menu-btn {
        display: block;
    }
    
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    
    .hero-text h1 {
        font-size: 36px;
    }
    
    .features {
        flex-direction: column;
        gap: 20px;
        align-items: center;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .products-grid,
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .scenarios-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-info {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-text h1 {
        font-size: 28px;
    }
    
    .tagline {
        font-size: 18px;
    }
    
    .description {
        font-size: 16px;
    }
    
    .section-header h2 {
        font-size: 28px;
    }
    
    .scenarios-grid {
        grid-template-columns: 1fr;
    }
}