:root {
    --primary: #4a9ff5;
    --primary-light: rgba(74, 159, 245, 0.1);
    --dark-1: #0f172a;
    --dark-2: #1e293b;
    --dark-3: #334155;
    --text: #e2e8f0;
    --text-light: #94a3b8;
    --white: #ffffff;
    --radius: 8px;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    background-color: var(--dark-1);
    color: var(--text);
    font-family: 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
}

.navbar {
    background-color: var(--dark-2);
    height: 70px;
    border-bottom: 1px solid var(--dark-3);
}

.navbar-brand {
    color: var(--primary);
    font-weight: bold;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
}

.navbar-brand i {
    margin-right: 10px;
    font-size: 1.8rem;
}

.nav-link {
    color: var(--text-light);
    font-size: 1rem;
    margin: 0 0.5rem;
    padding: 0.5rem 0;
    position: relative;
}

.nav-link:hover, .nav-link.active {
    color: var(--primary);
}

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

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

.hero {
    padding: 5rem 0;
    position: relative;
    overflow: hidden;
}


.hero .container p {
    color: #aeaeae;
    line-height: 30px;
}


.section {
    background-color: var(--dark-2);
    border-radius: var(--radius);
    padding: 2.5rem;
    margin-bottom: 2rem;
    border: 1px solid var(--dark-3);
    box-shadow: var(--shadow);
}

.section-title {
    color: var(--primary);
    font-size: 1.4rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--dark-3);
    display: flex;
    align-items: center;
    font-weight: normal;
    color: #fff;
}

.section-title i {
    margin-right: 0.75rem;
    font-size: 1.5rem;
}

.main-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 20px;
    position: relative;
    -ms-transform: translateY(450px);
    -moz-transition: 1s ease;
    transition: 1s ease;
    text-shadow: 2px 2px 2px rgb(97 172 252);
    color: #ffffff;
    letter-spacing: 8px;
}

.product-card {
    background-color: var(--dark-3);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid var(--dark-3);
    height: 100%;
    cursor: pointer;
}

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

.product-img {
    height: 180px;
    background-color: var(--dark-1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: var(--primary);
    position: relative;
}

.product-img:after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-light) 0%, rgba(74, 159, 245, 0) 100%);
}

.product-info {
    padding: 1.5rem;
}

.product-name {
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 0.6rem;
    color: var(--text);
}

.product-desc {
    font-size: 0.9rem;
    color: var(--text-light);
}

.advantage-card {
    background-color: var(--dark-3);
    border-radius: var(--radius);
    padding: 1.5rem;
    border: 1px solid var(--dark-3);
    height: 100%;
}

.advantage-icon {
    font-size: 1.5rem;
    color: var(--primary);
    margin-right: 1rem;
}

.advantage-title {
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text);
}

.advantage-desc {
    font-size: 0.9rem;
    color: var(--text-light);
}

.process-step {
    text-align: center;
    position: relative;
}

.step-icon {
    width: 60px;
    height: 60px;
    background: var(--bs-purple);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    margin: 0 auto 1rem;
}

.step-title {
    font-weight: 500;
    margin-bottom: 0.3rem;
    color: var(--text);
    font-size: 1rem;
}

.step-desc {
    font-size: 0.9rem;
    color: var(--text-light);
}

.footer {
    background-color: var(--dark-2);
    color: var(--text-light);
    padding: 2.5rem 0;
    text-align: center;
    border-top: 1px solid var(--dark-3);
}


@media (max-width: 992px) {
    .process-step:not(:last-child):after {
        content: '';
        position: absolute;
        top: 30px;
        right: -40%;
        width: 80%;
        height: 2px;
        background-color: var(--dark-3);
    }
}

@media (max-width: 768px) {
    .process-step {
        margin-bottom: 2rem;
    }

    .process-step:not(:last-child):after {
        top: auto;
        bottom: -1rem;
        left: 50%;
        right: auto;
        width: 2px;
        height: 2rem;
        transform: translateX(-50%);
    }
}


/* 新增售前客服模块样式 */
.pre-sales-contact {
    background: linear-gradient(135deg, var(--dark-2) 0%, var(--dark-3) 100%);
    border-radius: var(--radius);
    padding: 2.5rem;
    margin-bottom: 2rem;
    border: 1px solid var(--primary);
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

.pre-sales-contact:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='100' height='100' viewBox='0 0 100 100'%3E%3Cpath fill='%234a9ff5' fill-opacity='0.05' d='M30,10L50,30L70,10L90,30L70,50L90,70L70,90L50,70L30,90L10,70L30,50L10,30L30,10Z'/%3E%3C/svg%3E");
}

.contact-container {
    display: flex;
    align-items: center;
    position: relative;
    z-index: 1;
}

.contact-icon {
    font-size: 3.5rem;
    color: var(--primary);
    margin-right: 2rem;
    flex-shrink: 0;
}

.contact-content {
    flex: 1;
}

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

.contact-desc {
    font-size: 1rem;
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.contact-methods {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.contact-btn {
    background-color: var(--primary);
    color: white;
    border: none;
    border-radius: 50px;
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    transition: var(--transition);
}

.contact-btn:hover {
    background-color: #3a8fe5;
    transform: translateY(-2px);
}

.contact-btn i {
    margin-right: 0.5rem;
}

@media (max-width: 768px) {
    .contact-container {
        flex-direction: column;
        text-align: center;
    }

    .contact-icon {
        margin-right: 0;
        margin-bottom: 1.5rem;
    }

    .contact-methods {
        justify-content: center;
    }
}


.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.benefit-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    padding: 1.5rem;
    transition: transform 0.3s, box-shadow 0.3s;
    border-left: 4px solid var(--primary-color);
}

.benefit-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
    background: rgba(255, 255, 255, 0.08);
}

.benefit-icon {
    font-size: 2rem;
    color: var(--highlight-color);
    margin-bottom: 1rem;
}

.benefit-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--secondary-color);
}

.benefit-desc {
    font-size: 0.95rem;
    opacity: 0.9;
}