.journey {
        max-width: 1200px;
        margin: 0 auto;
        padding: 2rem;
    }

    .journey-header {
        text-align: center;
        margin-bottom: 4rem;
    }

    .journey-header h1 {
        font-size: 2.5rem;
        color: #333;
        margin-bottom: 0.5rem;
    }

    .journey-header p {
        font-size: 1.2rem;
        color: #666;
        font-weight: bold;
    }

    /* 时间线容器 */
    .timeline-container {
        position: relative;
        padding: 2rem 0;
    }

    /* 时间线垂直线 */
    .timeline-container::before {
        content: '';
        position: absolute;
        top: 0;
        bottom: 0;
        left: 50%;
        width: 4px;
        background: linear-gradient(to bottom, #007bff, #6f42c1);
        transform: translateX(-50%);
        z-index: 1;
    }

    /* 时间线项目 */
    .timeline-item {
        position: relative;
        margin-bottom: 3rem;
        display: flex;
        width: 100%;
        opacity: 0;
        transform: translateY(30px);
        animation: fadeInUp 0.6s ease forwards;
    }

    .timeline-item:nth-child(odd) {
        justify-content: flex-start;
        animation-delay: calc(var(--delay) * 0.1s);
    }

    .timeline-item:nth-child(even) {
        justify-content: flex-end;
        animation-delay: calc(var(--delay) * 0.1s);
    }

    /* 时间点标记 */
    .timeline-item::after {
        content: "";
        position: absolute;
        top: 24px;
        left: 50%;
        width: 16px;
        height: 16px;
        display: block;
        background: #007bff;
        box-shadow: 0 0 0 3px white, 0 0 0 5px #007bff;
        border-radius: 50%;
        transform: translateX(-50%);
        z-index: 3;
        transition: all 0.3s ease;
    }

    .timeline-item:hover::after {
        transform: translateX(-50%) scale(1.2);
        box-shadow: 0 0 0 3px white, 0 0 0 6px #007bff;
    }

    /* 时间线内容 */
    .timeline-content {
        width: calc(50% - 3rem);
        padding: 1.5rem;
        background: white;
        border-radius: 12px;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        position: relative;
        z-index: 2;
        transition: all 0.3s ease;
        border: 1px solid #e9ecef;
    }

    .timeline-content:hover {
        transform: translateY(-5px);
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
        background-color: #f8f9fa;
    }

    /* 左侧内容的箭头 */
    .timeline-item:nth-child(odd) .timeline-content::before {
        content: '';
        position: absolute;
        top: 20px;
        right: -15px;
        border-width: 10px 0 10px 15px;
        border-style: solid;
        border-color: transparent transparent transparent white;
        z-index: 1;
    }

    .timeline-item:nth-child(odd) .timeline-content:hover::before {
        border-color: transparent transparent transparent #f8f9fa;
    }

    /* 右侧内容的箭头 */
    .timeline-item:nth-child(even) .timeline-content::before {
        content: '';
        position: absolute;
        top: 20px;
        left: -15px;
        border-width: 10px 15px 10px 0;
        border-style: solid;
        border-color: transparent white transparent transparent;
        z-index: 1;
    }

    .timeline-item:nth-child(even) .timeline-content:hover::before {
        border-color: transparent #f8f9fa transparent transparent;
    }

    /* 时间线头部 */
    .timeline-header {
        display: flex;
        align-items: center;
        margin-bottom: 1rem;
    }

    .timeline-icon {
        font-size: 1.5rem;
        margin-right: 0.75rem;
    }

    .timeline-title {
        margin: 0;
        font-size: 1.25rem;
        color: #333;
        flex-grow: 1;
    }

    .timeline-date {
        background: #e9ecef;
        padding: 0.25rem 0.75rem;
        border-radius: 20px;
        font-size: 0.9rem;
        color: #666;
        font-weight: 500;
    }

    /* 时间线内容 */
    .timeline-body {
        line-height: 1.6;
        color: #555;
    }

    .timeline-body p {
        margin: 0.5rem 0;
    }

    .timeline-body ul,
    .timeline-body ol {
        padding-left: 1.25rem;
        margin: 0.75rem 0;
    }

    .timeline-body li {
        margin-bottom: 0.25rem;
    }

    /* 动画 */
    @keyframes fadeInUp {
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    /* 响应式设计 - 移动端 */
    @media (max-width: 768px) {
        .journey {
            padding: 1rem;
        }

        .journey-header h1 {
            font-size: 2rem;
        }

        /* 移动端时间线变为单列 */
        .timeline-container::before {
            left: 1.5rem;
        }

        .timeline-item {
            justify-content: flex-start !important;
        }

        .timeline-item::after {
            left: 1.5rem;
            transform: translateX(0);
        }

        .timeline-item:hover::after {
            transform: scale(1.2);
        }

        .timeline-content {
            width: calc(100% - 2.5rem);
            margin-left: 2.5rem;
        }

        /* 移动端统一箭头方向（向左） */
        .timeline-content::before {
            left: -15px !important;
            right: auto !important;
            border-width: 10px 15px 10px 0 !important;
            border-color: transparent white transparent transparent !important;
        }

        .timeline-content:hover::before {
            border-color: transparent #f8f9fa transparent transparent !important;
        }
    }

    @media (max-width: 480px) {
        .timeline-content {
            padding: 1rem;
        }

        .timeline-header {
            flex-direction: column;
            align-items: flex-start;
        }

        .timeline-date {
            margin-top: 0.5rem;
            margin-left: 0;
        }

        .timeline-title {
            font-size: 1.1rem;
        }
    }