/* 课程体系页面样式 */
.course-filter {
    background: #fff;
    padding: 20px 0;
    border-bottom: 1px solid #eee;
    position: sticky;
    top: 76px;
    z-index: 100;
}

.filter-row {
    display: flex;
    align-items: flex-start;
    margin-bottom: 15px;
}

.filter-row:last-child {
    margin-bottom: 0;
}

.filter-label {
    width: 100px;
    font-weight: 600;
    color: #333;
    padding-top: 8px;
    flex-shrink: 0;
}

.filter-options {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.filter-btn {
    padding: 6px 16px;
    border: 1px solid #ddd;
    border-radius: 20px;
    background: #fff;
    color: #666;
    cursor: pointer;
    transition: all 0.3s;
}

.filter-btn:hover,
.filter-btn.active {
    background: #FF6B35;
    border-color: #FF6B35;
    color: #fff;
}

/* 课程区块 */
.course-section {
    padding: 60px 0;
}

.platform-block,
.job-block {
    margin-bottom: 50px;
}

.platform-header,
.job-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 2px solid #f5f5f5;
}

.platform-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: #fff;
}

.platform-icon.taobao {
    background: linear-gradient(135deg, #FF6A00, #FF8C00);
}

.platform-icon.pdd {
    background: linear-gradient(135deg, #E02E24, #FF4D4F);
}

.platform-icon.douyin {
    background: linear-gradient(135deg, #161823, #252C42);
}

.platform-icon.cross {
    background: linear-gradient(135deg, #1890FF, #40A9FF);
}

.platform-info h3 {
    font-size: 24px;
    color: #333;
    margin-bottom: 5px;
}

.platform-info p {
    color: #888;
    font-size: 14px;
}

.job-header h3 {
    font-size: 20px;
    color: #333;
    display: flex;
    align-items: center;
    gap: 10px;
}

.job-header h3 i {
    color: #FF6B35;
}

.job-desc {
    color: #888;
    font-size: 14px;
    margin-left: auto;
}

/* 课程详情卡片 */
.course-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.course-detail-card {
    background: #fff;
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
    position: relative;
    transition: all 0.3s;
}

.course-detail-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.12);
}

.course-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    padding: 3px 10px;
    border-radius: 10px;
    font-size: 12px;
    font-weight: 600;
}

.course-badge.hot {
    background: #FF4D4F;
    color: #fff;
}

.course-badge.recommend {
    background: #1890FF;
    color: #fff;
}

.course-badge.new {
    background: #52C41A;
    color: #fff;
}

.course-detail-card h4 {
    font-size: 18px;
    color: #333;
    margin-bottom: 12px;
    padding-right: 60px;
}

.course-features {
    display: flex;
    gap: 15px;
    margin-bottom: 12px;
    font-size: 13px;
    color: #888;
}

.course-features span {
    display: flex;
    align-items: center;
    gap: 5px;
}

.course-features i {
    color: #FF6B35;
}

.course-desc {
    color: #666;
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 15px;
}

.course-modules {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.module-tag {
    background: #FFF5F0;
    color: #FF6B35;
    padding: 3px 10px;
    border-radius: 4px;
    font-size: 12px;
}

.course-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 15px;
    border-top: 1px solid #f5f5f5;
}

.course-price {
    font-size: 24px;
    color: #FF6B35;
    font-weight: 700;
}

.price-note {
    font-size: 12px;
    color: #999;
    font-weight: 400;
}

.btn-detail {
    padding: 8px 20px;
    background: #FF6B35;
    color: #fff;
    border-radius: 20px;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s;
}

.btn-detail:hover {
    background: #E55A2B;
}

/* 课程大纲 */
.syllabus-section {
    background: #f9f9f9;
    padding: 60px 0;
}

.syllabus-content {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}

.syllabus-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 30px;
    background: linear-gradient(135deg, #FF6B35, #FF8C5A);
    color: #fff;
}

.syllabus-info h3 {
    font-size: 24px;
    margin-bottom: 15px;
}

.syllabus-meta {
    display: flex;
    gap: 25px;
    margin-bottom: 10px;
}

.syllabus-meta span {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 14px;
    opacity: 0.9;
}

.syllabus-desc {
    font-size: 14px;
    opacity: 0.85;
    line-height: 1.8;
}

.syllabus-price {
    text-align: center;
}

.price-label {
    font-size: 14px;
    opacity: 0.85;
}

.price-value {
    font-size: 36px;
    font-weight: 700;
}

.btn-enroll {
    display: inline-block;
    margin-top: 15px;
    padding: 10px 30px;
    background: #fff;
    color: #FF6B35;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-enroll:hover {
    background: #FFF5F0;
}

.syllabus-modules {
    padding: 30px;
}

.module-item {
    padding: 20px 0;
    border-bottom: 1px solid #f5f5f5;
}

.module-item:last-child {
    border-bottom: none;
}

.module-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 10px;
}

.module-num {
    background: #FF6B35;
    color: #fff;
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 13px;
    font-weight: 600;
}

.module-title {
    font-size: 16px;
    color: #333;
    font-weight: 600;
}

.module-content {
    color: #666;
    font-size: 14px;
    line-height: 1.8;
    padding-left: 85px;
}

/* 响应式 */
@media (max-width: 1100px) {
    .course-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 860px) {
    .course-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .filter-row {
        flex-direction: column;
    }

    .filter-label {
        width: 100%;
        padding-bottom: 10px;
    }

    .course-grid {
        grid-template-columns: 1fr;
    }

    .syllabus-header {
        flex-direction: column;
        gap: 20px;
    }

    .syllabus-price {
        text-align: left;
    }

    .module-content {
        padding-left: 0;
    }

    .job-desc {
        display: none;
    }
}