/* ========== SPA 页面切换 ========== */
.page-content {
    display: none;
}

.page-content.active {
    display: block;
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========== 页面错误 ========== */
.page-error {
    text-align: center;
    padding: 100px 20px;
    color: #999;
}

/* ========== 子页面通用样式 ========== */
.page-content .page-image-full {
    display: flex;
    width: 100%;
    padding: 0;
    margin: 0;
    justify-content: center;
}

.page-content .page-image-full img {
    width: 99%;
    height: auto;
    display: block;
}

.page-banner {
    background: linear-gradient(135deg, #1a3e50, #2d5a4c);
    padding: 120px 0 60px;
    text-align: center;
    color: #fff;
    margin-top: 60px;
}

.page-banner h1 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 10px;
}

.page-banner p {
    font-size: 18px;
    opacity: 0.8;
    letter-spacing: 4px;
}

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

.section-title {
    text-align: center;
    font-size: 32px;
    font-weight: 700;
    color: #1a3e50;
    margin-bottom: 40px;
}

.section-title:after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: #2c82ba;
    margin: 15px auto 0;
}