/* ========== 视差滚动内容外壳 ========== */
.page-body-shell{
    position:relative;
    z-index:3;
    background:#fff;
    box-shadow:0 10px 30px rgba(0,0,0,0.08);
}

.plan-detail-wrap {
    max-width: 1800px;
    margin: 0 auto;
    padding: 80px 40px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    color: #333;
    box-sizing: border-box;
}

/* ===== 标题 ===== */
.plan-detail-title {
    font-size: 30px;
    font-weight: 700;
    color: #333;
    line-height: 1.5;
    margin-bottom: 30px;
    word-break: break-all;
}

/* ===== 大图 ===== */
.plan-detail-hero {
    width: 100%;
    margin-bottom: 12px;
    overflow: hidden;
}
.plan-detail-hero img {
    width: 100%;
    height: auto;
    max-height: 800px;
    object-fit: cover;
    display: block;
}

/* ===== 缩略图栏 ===== */
.plan-detail-thumbs {
    display: flex;
    gap: 10px;
    margin-bottom: 80px;
    overflow-x: auto;
}
.plan-detail-thumbs .thumb-item {
    flex: 0 0 calc((100% - 50px) / 6);
    min-width: 120px;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    cursor: pointer;
    border: 2px solid transparent;
    transition: border-color 0.3s;
}
.plan-detail-thumbs .thumb-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.plan-detail-thumbs .thumb-item:hover,
.plan-detail-thumbs .thumb-item.active {
    border-color: #00a79d;
}

/* ===== 分隔线 + 小标题 ===== */
.plan-detail-divider {
    border: none;
    border-top: 1px solid #e8e8e8;
    margin: 0;
}
.plan-detail-section-title {
    font-size: 30px;
    font-weight: 600;
    color: #555;
    margin: 24px 0 20px;
}

/* ===== 正文 ===== */
.plan-detail-body {
    font-size: 15px;
    line-height: 2;
    color: #333;
    padding-bottom: 40px;
    border-bottom: 1px solid #e8e8e8;
    margin-bottom: 40px;
}
.plan-detail-body p {
    margin-bottom: 16px;
}
.plan-detail-body img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 20px 0;
}
.plan-detail-body h2,
.plan-detail-body h3,
.plan-detail-body h4 {
    font-weight: 700;
    color: #333;
    margin: 24px 0 12px;
}
.plan-detail-body h2 { font-size: 20px; }
.plan-detail-body h3 { font-size: 18px; }
.plan-detail-body h4 { font-size: 16px; }
.plan-detail-body a { color: #00a79d; }
.plan-detail-body blockquote {
    border-left: 3px solid #00a79d;
    padding: 10px 16px;
    margin: 16px 0;
    background: #f8fafc;
    color: #555;
}
.plan-detail-body ul,
.plan-detail-body ol {
    margin: 12px 0 12px 20px;
}

/* ===== 底部导航 ===== */
.plan-detail-footer {
    display: flex;
    justify-content: center;
    gap: 16px;
}
.plan-detail-footer a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 28px;
    border: 1px solid #d0d0d0;
    border-radius: 2px;
    font-size: 14px;
    color: #666;
    text-decoration: none;
    background: #fff;
    transition: all 0.3s;
}
.plan-detail-footer a:hover {
    border-color: #00a79d;
    color: #00a79d;
}
.plan-detail-footer a.disabled {
    opacity: 0.4;
    pointer-events: none;
    cursor: default;
}

/* ===== 空状态 ===== */
.plan-empty {
    text-align: center;
    padding: 100px 20px;
    color: #999;
}
.plan-empty p {
    font-size: 16px;
    margin-bottom: 12px;
}

/* ===== 响应式 ===== */
@media (max-width: 1366px) {
    .plan-detail-wrap {
        padding: 60px 40px;
    }
}

@media (max-width: 1024px) {
    .plan-detail-wrap {
        padding: 50px 30px;
    }
}

@media (max-width: 768px) {
    .plan-detail-wrap {
        padding: 24px 16px 60px;
    }
    .plan-detail-title {
        font-size: 18px;
    }
    .plan-detail-thumbs .thumb-item {
        flex: 0 0 calc((100% - 30px) / 4);
        min-width: 80px;
    }
    .plan-detail-body {
        font-size: 14px;
    }
}