/* 基础样式 */
body {
    margin: 0;
    font-family: 'PingFang SC', 'Microsoft YaHei', Arial, sans-serif;
    background: #f8f9fa;
    color: #222;
    overflow-x: hidden;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
    box-sizing: border-box;
}
.section-title {
    text-align: center;
    font-size: 2.2rem;
    margin: 20px 0 25px 0;
    color: #1a237e;
    font-weight: 700;
}

/* 导航栏 */
.navbar {
    background: #1a237e;
    color: #fff;
    padding: 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    width: 100%;
    box-sizing: border-box;
}
.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    height: 60px;
    width: 100%;
    box-sizing: border-box;
}
.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-logo .logo-img {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.nav-logo h2 {
    margin: 0;
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: 2px;
}
.nav-menu {
    list-style: none;
    display: flex;
    gap: 30px;
    margin: 0;
    padding: 0;
}
.nav-menu li a {
    color: #fff;
    text-decoration: none;
    font-size: 1.1rem;
    transition: color 0.2s;
}
.nav-menu li a:hover {
    color: #ffb300;
}
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}
.hamburger span {
    width: 25px;
    height: 3px;
    background: #fff;
    border-radius: 2px;
}

/* 首页横幅 */
.hero {
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(90deg, #1a237e 60%, #3949ab 100%);
    color: #fff;
    padding: 120px 0 40px 0;
    text-align: center;
    margin-top: 60px;
}
.hero-content {
    max-width: 800px;
    padding: 0 30px;
    margin: 0 auto;
    width: 100%;
    box-sizing: border-box;
}
.hero-content h1 {
    font-size: 2.8rem;
    margin-bottom: 20px;
    font-weight: 800;
}
.hero-content p {
    font-size: 1.3rem;
    margin-bottom: 30px;
}
.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}
.btn {
    padding: 12px 32px;
    border: none;
    border-radius: 25px;
    font-size: 1.1rem;
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
    text-decoration: none;
    display: inline-block;
}
.btn-primary {
    background: #ffb300;
    color: #1a237e;
    font-weight: 700;
}
.btn-primary:hover {
    background: #ffa000;
}
.btn-secondary {
    background: #fff;
    color: #1a237e;
    font-weight: 700;
    border: 1px solid #ffb300;
}
.btn-secondary:hover {
    background: #ffb300;
    color: #fff;
}
.about-image {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.about-logo {
    width: 120px;
    height: 120px;
    object-fit: contain;
    filter: drop-shadow(0 4px 12px rgba(26,35,126,0.1));
}



/* 关于我们 */
.about {
    background: #fff;
    padding: 60px 0;
}
.about-content {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    align-items: center;
    width: 100%;
}
.about-text {
    flex: 2 1 350px;
    box-sizing: border-box;
}
.about-image {
    flex: 1 1 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
}

.features {
    display: flex;
    gap: 30px;
    margin-top: 30px;
    width: 100%;
    flex-wrap: wrap;
}
.feature {
    background: #f1f8e9;
    border-radius: 12px;
    padding: 18px 20px;
    flex: 1 1 120px;
    text-align: center;
    color: #33691e;
    box-shadow: 0 2px 8px rgba(51,105,30,0.06);
    box-sizing: border-box;
}
.feature i {
    font-size: 1.6rem;
    margin-bottom: 8px;
}

/* 产品展示 */
.products {
    background: #f8f9fa;
    padding: 40px 0;
}
.product-showcase {
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 25px;
    width: 100%;
    box-sizing: border-box;
}
.product-carousel {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    margin-bottom: 0;
    width: 100%;
    box-shadow: 0 4px 20px rgba(26,35,126,0.06);
    background: #fff;
}
.carousel-wrapper {
    position: relative;
    width: 100%;
    height: 400px;
    background: none;
    border: none;
    border-radius: 16px;
    box-shadow: none;
    overflow: hidden;
}
.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.6s ease-in-out;
    display: block;
    visibility: hidden;
    z-index: 1;
    border-radius: 16px;
}
.carousel-slide.active {
    opacity: 1 !important;
    display: block !important;
    visibility: visible !important;
    z-index: 2 !important;
}
.carousel-image {
    width: 100% !important;
    height: 100% !important;
    object-fit: contain !important;
    display: block !important;
    max-width: 100% !important;
    max-height: 100% !important;
    border-radius: 16px;
    background: #f8f9fa;
}
.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.85);
    border: none;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: #1a237e;
    transition: box-shadow 0.2s, background 0.2s, color 0.2s;
    z-index: 10;
    box-shadow: 0 2px 8px rgba(26,35,126,0.08);
}
.carousel-btn:hover {
    background: #e3eafc;
    color: #3949ab;
    box-shadow: 0 4px 16px rgba(26,35,126,0.18);
    transform: translateY(-50%) scale(1.08);
}
.carousel-btn.prev {
    left: 18px;
}
.carousel-btn.next {
    right: 18px;
}
.carousel-dots {
    position: absolute;
    bottom: 18px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}
.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(26,35,126,0.15);
    cursor: pointer;
    transition: background 0.3s, transform 0.3s;
    border: 2px solid #fff;
}
.dot.active {
    background: #3949ab;
    transform: scale(1.2);
    border-color: #3949ab;
}
.product-info {
    background: transparent;
    border-radius: 0;
    padding: 20px 0;
    box-shadow: none;
    position: relative;
    min-height: 180px;
    width: 100%;
    max-width: 1000px;
    overflow: hidden;
    border: none;
}
.info-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    padding: 20px 0;
    opacity: 0;
    transition: opacity 0.6s ease-in-out;
    display: flex;
    flex-direction: column;
    justify-content: center;
    overflow-y: auto;
}
.info-slide.active {
    opacity: 1;
}
.info-slide h3 {
    color: #1a237e;
    font-size: 1.6rem;
    margin-top: 0;
    margin-bottom: 15px;
    font-weight: 700;
    text-align: center;
    word-wrap: break-word;
}
.info-slide p {
    color: #666;
    line-height: 1.6;
    margin-top: 0;
    margin-bottom: 20px;
    text-align: center;
    word-wrap: break-word;
    font-size: 1rem;
    font-weight: 400;
    max-width: 85%;
    margin-left: auto;
    margin-right: auto;
}
.product-features {
    list-style: none;
    padding: 0;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 15px;
    max-width: 900px;
    justify-content: center;
    align-items: center;
}
.product-features li {
    color: #388e3c;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    background: #f1f8e9;
    border-radius: 8px;
    word-wrap: break-word;
    white-space: nowrap;
    line-height: 1.3;
    font-weight: 500;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.product-features li:hover {
    background: #e8f5e8;
    transform: translateY(-1px);
}

.product-features li i {
    color: #388e3c;
    font-size: 1rem;
}

/* 技术优势 */
.advantages {
    background: #fff;
    padding: 60px 0;
}
.advantages-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    justify-content: center;
    align-items: stretch;
    width: 100%;
}
.advantage-item {
    background: #e3eafc;
    border-radius: 14px;
    padding: 28px 20px;
    flex: 1 1 220px;
    max-width: 260px;
    min-width: 180px;
    text-align: center;
    color: #1a237e;
    box-shadow: 0 2px 10px rgba(26,35,126,0.06);
    box-sizing: border-box;
}
.advantage-icon {
    font-size: 2.2rem;
    margin-bottom: 10px;
}

/* 服务流程 */
.process {
    background: #f8f9fa;
    padding: 60px 0;
}
.process-steps {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    justify-content: center;
    align-items: stretch;
    width: 100%;
}
.step {
    background: #fff;
    border-radius: 14px;
    padding: 24px 18px;
    flex: 1 1 160px;
    max-width: 180px;
    min-width: 120px;
    text-align: center;
    color: #1a237e;
    box-shadow: 0 2px 10px rgba(26,35,126,0.06);
    box-sizing: border-box;
}
.step-number {
    width: 36px;
    height: 36px;
    background: #ffb300;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    margin: 0 auto 10px auto;
    font-weight: 700;
}

/* 联系我们 */
.contact {
    background: #fff;
    padding: 60px 0;
}
.contact-info-section {
    margin-bottom: 30px;
}
.contact-info-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 20px;
}
.contact-card {
    background: #f8f9fa;
    border-radius: 12px;
    padding: 25px;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: 0 2px 10px rgba(26,35,126,0.06);
    transition: transform 0.2s, box-shadow 0.2s;
    border: 1px solid #e3eafc;
}
.contact-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(26,35,126,0.1);
}
.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #ffb300, #ffa000);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    color: #fff;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(255,179,0,0.2);
}
.contact-details h3 {
    color: #1a237e;
    font-size: 1.1rem;
    margin: 0 0 6px 0;
    font-weight: 600;
}
.contact-details p {
    color: #666;
    font-size: 0.95rem;
    margin: 0;
    line-height: 1.4;
}
.address-card {
    grid-column: 1 / -1;
}
.address-card .contact-details p {
    font-size: 1rem;
    color: #555;
}

/* 其他渠道区域 */
.channels-section {
    background: #f8f9fa;
    border-radius: 12px;
    padding: 25px 20px;
    box-shadow: 0 2px 10px rgba(26,35,126,0.06);
    border: 1px solid #e3eafc;
}
.channels-title {
    text-align: center;
    color: #1a237e;
    font-size: 1.4rem;
    margin: 0 0 20px 0;
    font-weight: 600;
    position: relative;
}
.channels-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 2px;
    background: linear-gradient(90deg, #ffb300, #ffa000);
    border-radius: 1px;
}
.channels-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
}
.channel-card {
    background: #fff;
    border-radius: 10px;
    padding: 18px 15px;
    text-align: center;
    transition: all 0.2s ease;
    border: 1px solid #e3eafc;
    position: relative;
    cursor: pointer;
}
.channel-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(26,35,126,0.1);
}
.channel-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #1a237e, #3949ab);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: #fff;
    margin: 0 auto 10px auto;
    transition: all 0.2s ease;
    box-shadow: 0 2px 8px rgba(26,35,126,0.15);
}
.channel-card:hover .channel-icon {
    transform: scale(1.05);
    box-shadow: 0 3px 12px rgba(26,35,126,0.25);
}
.channel-card h4 {
    color: #1a237e;
    font-size: 1rem;
    margin: 0 0 6px 0;
    font-weight: 600;
}
.channel-card p {
    color: #666;
    font-size: 0.85rem;
    margin: 0;
    line-height: 1.4;
}

/* 二维码弹窗 */
.qr-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}
.qr-modal.active {
    display: flex;
}
.qr-content {
    background: #fff;
    border-radius: 12px;
    padding: 25px;
    text-align: center;
    max-width: 300px;
    width: 90%;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
    position: relative;
}
.qr-close {
    position: absolute;
    top: 10px;
    right: 15px;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: #666;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.qr-close:hover {
    color: #1a237e;
}
.qr-image {
    width: 200px;
    height: 200px;
    background: #f8f9fa;
    border-radius: 8px;
    margin: 15px auto;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid #e3eafc;
}
.qr-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 6px;
}
.qr-title {
    color: #1a237e;
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 10px;
}
.qr-desc {
    color: #666;
    font-size: 0.9rem;
    margin: 0;
}

/* 页脚 */
.footer {
    background: #1a237e;
    color: #fff;
    text-align: center;
    padding: 18px 0;
    font-size: 1rem;
    letter-spacing: 1px;
    width: 100%;
    box-sizing: border-box;
}

.contact-subtitle {
    text-align: center;
    color: #222;
    font-size: 1.15rem;
    font-weight: 500;
    margin: 10px 0 32px 0;
    letter-spacing: 1px;
}

/* 响应式设计 */
@media (max-width: 900px) {
    .about-content, .contact-content {
        flex-direction: column;
        gap: 30px;
    }
    .carousel-wrapper {
        height: 300px;
    }
    .product-info {
        min-height: 140px;
        padding: 15px 0;
    }
    .info-slide {
        padding: 15px 0;
    }
    .info-slide h3 {
        font-size: 1.4rem;
        margin-bottom: 10px;
    }
    .info-slide p {
        font-size: 0.95rem;
        margin-bottom: 15px;
        max-width: 100%;
    }
    .product-features {
        gap: 10px;
        margin-top: 12px;
        max-width: 100%;
        justify-content: center;
    }
    .product-features li {
        font-size: 0.9rem;
        padding: 8px 12px;
        gap: 6px;
    }
    .contact-row {
        flex-direction: column;
        gap: 12px;
    }
    .advantages-grid, .process-steps {
        flex-direction: column;
        gap: 20px;
    }
}

@media (max-width: 700px) {
    .nav-container {
        padding: 0 15px;
    }
    .nav-menu {
        display: none;
    }
    .hamburger {
        display: flex;
    }
    
    /* 移动端菜单样式 */
    .nav-menu.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 60px;
        left: 0;
        right: 0;
        background: #1a237e;
        padding: 20px;
        gap: 15px;
        box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    }
    
    .nav-menu.active li {
        text-align: center;
    }
    
    .nav-menu.active li a {
        display: block;
        padding: 12px;
        font-size: 1.1rem;
    }
}

@media (max-width: 500px) {
    .container {
        padding: 0 15px;
    }
    .section-title {
        font-size: 1.8rem;
        margin: 15px 0 20px 0;
    }
    .hero {
        padding: 100px 0 30px 0;
    }
    .hero-content {
        padding: 0 15px;
    }
    .hero-content h1 {
        font-size: 1.8rem;
        margin-bottom: 15px;
    }
    .hero-content p {
        font-size: 1.1rem;
        margin-bottom: 25px;
    }
    .hero-buttons {
        flex-direction: column;
        gap: 12px;
        align-items: center;
    }
    .btn {
        padding: 10px 20px;
        font-size: 1rem;
        width: 200px;
        text-align: center;
    }
    .nav-logo .logo-img {
        width: 24px;
        height: 24px;
    }
    
    .about-logo {
        width: 80px;
        height: 80px;
    }
    .about {
        padding: 40px 0;
    }
    .about-content {
        gap: 25px;
    }
    .features {
        flex-direction: column;
        gap: 15px;
    }
    .feature {
        padding: 15px;
    }
    .advantages-grid, .process-steps {
        flex-direction: column;
        gap: 20px;
        align-items: center;
    }
    .advantage-item, .step {
        padding: 20px 15px;
        min-width: 0;
        max-width: 100%;
        flex: 1 1 auto;
        width: 100%;
    }
    .advantages {
        padding: 40px 0;
    }
    .process {
        padding: 40px 0;
    }
    .carousel-wrapper {
        height: 250px;
    }
    .product-info {
        min-height: 160px;
        padding: 15px 0;
    }
    .info-slide {
        padding: 15px 0;
    }
    .info-slide h3 {
        font-size: 1.4rem;
        margin-bottom: 10px;
    }
    .info-slide p {
        font-size: 0.95rem;
        margin-bottom: 15px;
        line-height: 1.5;
    }
    .product-features {
        gap: 8px;
        margin-top: 12px;
        justify-content: center;
        flex-wrap: wrap;
    }
    .product-features li {
        font-size: 0.9rem;
        padding: 8px 12px;
        gap: 6px;
        border-radius: 6px;
    }
    .product-features li i {
        font-size: 0.9rem;
    }
    .contact {
        padding: 40px 0;
    }
    .contact-info-section {
        margin-bottom: 25px;
    }
    .contact-info-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    .contact-card {
        padding: 15px;
        gap: 12px;
    }
    .contact-icon {
        width: 40px;
        height: 40px;
        font-size: 1.3rem;
    }
    .contact-details h3 {
        font-size: 1rem;
    }
    .contact-details p {
        font-size: 0.9rem;
    }
    .channels-section {
        padding: 20px 15px;
    }
    .channels-title {
        font-size: 1.3rem;
        margin-bottom: 20px;
    }
    .channels-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    .channel-card {
        padding: 15px 12px;
    }
    .channel-icon {
        width: 45px;
        height: 45px;
        font-size: 1.4rem;
    }
    .channel-card h4 {
        font-size: 0.95rem;
    }
    .channel-card p {
        font-size: 0.8rem;
    }
    .service-commitment {
        padding: 12px 0 20px 0;
        margin: 0 0 25px 0;
    }
    .service-commitment h3 {
        font-size: 1.1rem;
    }
    .service-commitment p {
        font-size: 0.85rem;
    }
    .carousel-btn {
        width: 36px;
        height: 36px;
        font-size: 1.2rem;
    }
    .carousel-btn.prev {
        left: 10px;
    }
    .carousel-btn.next {
        right: 10px;
    }
    .carousel-dots {
        bottom: 12px;
    }
    .dot {
        width: 8px;
        height: 8px;
    }
}

@media (max-width: 400px) {
    .container {
        padding: 0 12px;
    }
    .section-title {
        font-size: 1.6rem;
        margin: 12px 0 15px 0;
    }
    .hero-content h1 {
        font-size: 1.6rem;
    }
    .btn {
        padding: 8px 16px;
        font-size: 0.9rem;
        width: 180px;
    }
    .advantages-grid, .process-steps {
        flex-direction: column;
        gap: 15px;
        align-items: center;
    }
    .advantage-item, .step {
        padding: 15px 12px;
        min-width: 0;
        max-width: 100%;
        flex: 1 1 auto;
        width: 100%;
    }
    .carousel-wrapper {
        height: 200px;
    }
    .product-info {
        min-height: 140px;
        padding: 12px 0;
    }
    .info-slide {
        padding: 12px 0;
    }
    .info-slide h3 {
        font-size: 1.3rem;
        margin-bottom: 8px;
    }
    .info-slide p {
        font-size: 0.9rem;
        margin-bottom: 12px;
        line-height: 1.4;
    }
    .product-features {
        gap: 6px;
        margin-top: 10px;
    }
    .product-features li {
        font-size: 0.85rem;
        padding: 6px 10px;
        gap: 5px;
        border-radius: 5px;
    }
    .product-features li i {
        font-size: 0.85rem;
    }
    .carousel-btn {
        width: 32px;
        height: 32px;
        font-size: 1rem;
    }
    .carousel-btn.prev {
        left: 8px;
    }
    .carousel-btn.next {
        right: 8px;
    }
    .carousel-dots {
        bottom: 10px;
    }
    .dot {
        width: 6px;
        height: 6px;
    }
    .contact-info-grid {
        gap: 12px;
    }
    .contact-card {
        padding: 12px;
        gap: 10px;
    }
    .contact-icon {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
    .contact-details h3 {
        font-size: 0.95rem;
    }
    .contact-details p {
        font-size: 0.85rem;
    }
    .channels-section {
        padding: 20px 12px;
    }
    .channels-title {
        font-size: 1.2rem;
        margin-bottom: 15px;
    }
    .channels-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    .channel-card {
        padding: 15px 10px;
    }
    .channel-icon {
        width: 40px;
        height: 40px;
        font-size: 1.3rem;
    }
    .channel-card h4 {
        font-size: 0.9rem;
    }
    .channel-card p {
        font-size: 0.8rem;
    }
    .service-commitment {
        padding: 10px 0 15px 0;
        margin: 0 0 20px 0;
    }
    .service-commitment h3 {
        font-size: 1rem;
    }
    .service-commitment p {
        font-size: 0.8rem;
    }
}