.container {
            max-width: 1200px;
            margin: 0 auto;
            background-color: #ffffff;
            border-radius: 32px;
            box-shadow: 0 12px 30px rgba(0, 20, 30, 0.06);
            padding: 28px 8px;
        }

        /* 标题与头部 */
        .hero {
            margin-bottom: 32px;
            border-bottom: 3px solid #d9e9f5;
            padding-bottom: 18px;
        }

        .hero h1 {
            font-size: 2rem;
            font-weight: 700;
            color: #0a3a5e;
            letter-spacing: -0.02em;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
        }

        .hero h1 span {
            background: #e1eff9;
            font-size: 1rem;
            font-weight: 500;
            padding: 4px 14px;
            border-radius: 40px;
            color: #0a3a5e;
            white-space: nowrap;
        }

        .hero p {
            margin-top: 12px;
            color: #3c5a73;
            font-size: 1.05rem;
            max-width: 85%;
        }
 
        /* 表格样式 */
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 18px 0 12px;
            font-size: 0.92rem;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 2px 10px rgba(0,0,0,0.02);
        }

        .data-table th {
            background: #e2eff9;
            color: #0a3a5e;
            font-weight: 600;
            padding: 12px 12px;
            text-align: left;
            border-bottom: 1px solid #c6dcee;
        }

        .data-table td {
            padding: 12px 12px;
            border-bottom: 1px solid #e5eef7;
            background: #ffffff;
            vertical-align: top;
        }

        .data-table tr:last-child td {
            border-bottom: none;
        }

        /* 分层学习表特殊配色 */
        .level-weak { background: #fff5f0; }
        .level-mid { background: #f5faff; }
        .level-good { background: #f2fcf5; }

        
        /* 时间轴 */
 .timeline {
    display: flex;
    flex-direction: column;
    gap: 0;
    margin: 20px 0 10px;
    position: relative;
    padding-left: 24px;
}

.timeline::before {
    content: "";
    position: absolute;
    left: 16px;              /* 圆心所在 x */
    top: 20px;               /* 从第一个圆点圆心附近开始 */
    bottom: 20px;            /* 到最后一个圆点圆心附近结束 */
    width: 2px;
    background: linear-gradient(#b6d6ec, #3b8fc2);
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    gap: 18px;
    padding: 12px 0;
    position: relative;
}

.timeline-item::before {
    content: "";
    position: absolute;
    left: -16px;             /* 24 - 16 = 8 左边缘，圆心 8+8=16 */
    top: 18px;
    width: 12px;
    height: 12px;
    background: #3b8fc2;
    border-radius: 50%;
    border: 2px solid #ffffff;
    box-shadow: 0 0 0 2px #b6d6ec;
    box-sizing: content-box; /* 总宽 16px */
}

        .timeline-date {
            min-width: 80px;
            font-weight: 600;
            color: #0a3a5e;
            font-size: 0.9rem;
           margin-left: 1rem;
        }

        .timeline-content {
            flex: 1;
        }

        .timeline-content strong {
            color: #0f4468;
        }

        .timeline-content p {
            font-size: 0.9rem;
            color: #3c5a73;
            margin-top: 4px;
        }

    

        /* FAQ 区域 */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            margin-top: 16px;
        }

        .faq-item {
            border-bottom: 1px solid #d9e9f5;
            padding-bottom: 12px;
        }

        .faq-item summary {
            font-weight: 600;
            color: #0b4a6f;
            font-size: 1.05rem;
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 6px 0;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::after {
            content: "＋";
            font-weight: 400;
            color: #3b8fc2;
            font-size: 1.3rem;
            transition: transform 0.2s;
        }

        .faq-item[open] summary::after {
            content: "－";
        }

        .faq-item p {
            padding: 12px 6px 8px 6px;
            color: #2d4a61;
            font-size: 0.95rem;
            background: #f8fcff;
            border-radius: 14px;
            margin-top: 6px;
        }

        /* 内链样式 */
        .internal-link {
            color: #1b6d9e;
            text-decoration: none;
            border-bottom: 1px solid #b4d3ec;
            font-weight: 500;
        }

        .internal-link:hover {
            background: #e1eff9;
            border-bottom-color: #1b6d9e;
        }

        /* 响应式 */
        @media (max-width: 860px) {
         
            .timeline-item {
                flex-direction: column;
                gap: 4px;
            }
            .timeline-date {
                min-width: auto;
            }
        }

        @media (max-width: 600px) {
            .container {
                padding: 20px 16px;
            }

            .hero h1 {
                font-size: 1.6rem;
            }

            .hero p {
                max-width: 100%;
                font-size: 0.98rem;
            }

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

            .chart-container {
                gap: 10px;
            }

        

            .data-table th,
            .data-table td {
                padding: 8px 8px;
                font-size: 0.82rem;
            }

            .faq-item summary {
                font-size: 1rem;
            }
        }

        @media (max-width: 400px) {
            .card {
                padding: 16px;
            }
        }


.news {
   
    gap: 0px;
 
}