body {
    font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
    background-color: #f8f9fa;
}
.card-shadow {
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}
.btn-primary {
    background-color: #1e88e5;
    color: white;
    transition: background-color 0.3s;
}
.btn-primary:hover {
    background-color: #1976d2;
}
.btn-secondary {
    background-color: #ff9800;
    color: white;
    transition: background-color 0.3s;
}
.btn-secondary:hover {
    background-color: #f57c00;
}
.module-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #1e88e5;
}
.footer-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: white;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}
.footer-btn {
    flex: 1;
    text-align: center;
    padding: 0.75rem 0;
    color: white;
    font-weight: 600;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.footer-btn i {
    margin-bottom: 0.25rem;
}
.highlight {
    color: #ff5722;
    font-weight: 600;
}
.feature-icon {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: #1e88e5;
}
.process-step {
    position: relative;
    padding-left: 2rem;
    margin-bottom: 1rem;
}
.process-step::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    width: 1.5rem;
    height: 1.5rem;
    background-color: #1e88e5;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}
.step-1::before { content: "1"; }
.step-2::before { content: "2"; }
.step-3::before { content: "3"; }
.step-4::before { content: "4"; }
.faq-item {
    margin-bottom: 1rem;
    border-bottom: 1px solid #eee;
    padding-bottom: 1rem;
}
.faq-question {
    font-weight: 600;
    margin-bottom: 0.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.faq-answer {
    display: none;
    color: #666;
}
.faq-answer.active {
    display: block;
}
.traffic-card {
    border-radius: 10px;
    overflow: hidden;
    transition: transform 0.3s;
}
.traffic-card:hover {
    transform: translateY(-5px);
}
.banner {
    background: linear-gradient(135deg, #1e88e5 0%, #1976d2 100%);
    color: white;
    padding: 2rem 0;
    text-align: center;
}
.banner h1 {
    font-size: 2rem;
    margin-bottom: 1rem;
}
.banner p {
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
}
.price-tag {
    font-size: 3rem;
    font-weight: bold;
    color: #ff5722;
}
.price-unit {
    font-size: 1rem;
    color: #666;
}
.spec-item {
    display: flex;
    align-items: center;
    margin-bottom: 0.5rem;
}
.spec-icon {
    margin-right: 0.5rem;
    color: #1e88e5;
}
@media (max-width: 768px) {
    .banner h1 {
        font-size: 1.5rem;
    }
    .banner p {
        font-size: 1rem;
    }
    .price-tag {
        font-size: 2rem;
    }
}