body {
    background-color: #f8f9fc;
    font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    display: flex;
    flex-direction: column;
    height: 100vh;
}
.navbar-brand {
    font-weight: 700;
    letter-spacing: -0.5px;
}
.card {
    border: none;
    border-radius: 1.25rem;
    box-shadow: 0 8px 20px rgba(0,0,0,0.03), 0 2px 6px rgba(0,0,0,0.02);
    transition: transform 0.15s ease, box-shadow 0.2s;
    background: white;
}
.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 30px rgba(0,0,0,0.05);
}
.card-img-top {
    border-top-left-radius: 1.25rem;
    border-top-right-radius: 1.25rem;
    object-fit: cover;
    height: 180px;
    background-color: #e9edf4;
}
.price-tag {
    font-size: 1.3rem;
    font-weight: 700;
    color: #0d6efd;
}
.category-badge {
    background-color: #eef3fc;
    color: #0d6efd;
    font-weight: 500;
    padding: 0.3rem 0.9rem;
    border-radius: 30px;
    font-size: 0.75rem;
}
.carousel-item img {
    height: 200px;
    object-fit: cover;
    border-radius: 1.25rem;
}
.btn-primary {
    border-radius: 50px;
    padding: 0.5rem 1.8rem;
    font-weight: 600;
}
.btn-outline-secondary {
    border-radius: 50px;
}
.section-title {
    font-weight: 700;
    margin-bottom: 1.2rem;
    letter-spacing: -0.3px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.detail-img {
    border-radius: 1.5rem;
    object-fit: cover;
    width: 100%;
    max-height: 300px;
    background: #e9edf4;
}
.pay-method {
    border: 2px solid #e9edf4;
    border-radius: 1rem;
    padding: 0.8rem 1.2rem;
    transition: all 0.1s;
    cursor: default;
    background: white;
}
.pay-method i {
    font-size: 1.6rem;
    width: 2.2rem;
    color: #0d6efd;
}
.pay-method.selected {
    border-color: #0d6efd;
    background-color: #f0f6ff;
}
.content-page {
    background: white;
    border-radius: 2rem;
    padding: 2.5rem 2rem;
    box-shadow: 0 8px 30px rgba(0,0,0,0.02);
}
.content-page h2 {
    border-left: 5px solid #0d6efd;
    padding-left: 1rem;
}
@media (max-width: 576px) {
    .carousel-item img { height: 150px; }
    .card-img-top { height: 150px; }
    .content-page { padding: 1.5rem 1rem; }
}
.nav-link.active {
    font-weight: 600;
}
.card-title a {
    text-decoration: none;
    color: #1e293b;
}
.card-title a:hover {
    color: #0d6efd;
}
/* 通用容器间距 */
.section-padding {
    padding-top: 1rem;
    padding-bottom: 1rem;
}