:root {
    --primary-blue: #0052cc;
    --dark-blue: #072146;
    --accent-color: #ffcc00;
}

.about-hero {
    background: linear-gradient(135deg, var(--dark-blue) 0%, var(--primary-blue) 100%);
    padding: 100px 0;
    text-align: center;
    color: white;
}

.about-hero h1 { font-size: 3rem; margin-bottom: 20px; }
.slogan { font-size: 1.2rem; opacity: 0.9; }

.badge {
    background: rgba(0, 82, 204, 0.1);
    color: var(--primary-blue);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: bold;
}

.intro-section { padding: 80px 0; text-align: center; max-width: 800px; margin: 0 auto; }

.pain-points {
    display: flex;
    gap: 30px;
    margin-top: 40px;
}

.pain-card {
    flex: 1;
    padding: 40px;
    background: #f8f9fa;
    border-radius: 15px;
    transition: 0.3s;
}

.pain-card:hover { transform: translateY(-10px); background: white; box-shadow: 0 15px 30px rgba(0,0,0,0.1); }
.pain-card i { font-size: 2.5rem; color: var(--primary-blue); margin-bottom: 20px; }

.solutions { padding: 80px 0; }
.solution-content { display: flex; align-items: center; gap: 50px; }

.solution-list ul { list-style: none; padding: 0; }
.solution-list li { margin-bottom: 20px; display: flex; align-items: flex-start; gap: 10px; }
.solution-list i { color: #52c41a; font-size: 1.2rem; margin-top: 4px; }

.stats-bar {
    display: flex;
    justify-content: space-around;
    padding: 60px;
    background: var(--dark-blue);
    color: white;
    border-radius: 20px;
    margin: 60px 0;
}

.stat-item { text-align: center; }
.stat-item .num { font-size: 2.5rem; font-weight: bold; color: var(--accent-color); }

.about-cta { text-align: center; padding: 60px 0; border-top: 1px solid #eee; }
.btn-main { background: var(--primary-blue); color: white; padding: 15px 30px; text-decoration: none; border-radius: 5px; margin-right: 15px; }
.btn-secondary { border: 1px solid var(--primary-blue); color: var(--primary-blue); padding: 15px 30px; text-decoration: none; border-radius: 5px; }
/* 时间轴整体样式 */
.our-journey { padding: 80px 0; background: #fff; }

.timeline {
    position: relative;
    max-width: 900px;
    margin: 50px auto;
    padding-left: 30px;
    border-left: 3px solid #e1e8f0; /* 时间轴的主干线 */
}

.timeline-item {
    position: relative;
    margin-bottom: 50px;
}

.timeline-dot {
    position: absolute;
    left: -38px;
    top: 5px;
    width: 14px;
    height: 14px;
    background: var(--primary-blue);
    border-radius: 50%;
    border: 4px solid #fff;
    box-shadow: 0 0 0 3px rgba(0, 82, 204, 0.2);
}

.timeline-content {
    background: #fdfdfd;
    padding: 25px;
    border-radius: 12px;
    border: 1px solid #eee;
    transition: 0.3s;
}

.timeline-content:hover {
    box-shadow: 0 10px 25px rgba(0,0,0,0.05);
    border-color: var(--primary-blue);
}

.member-tag {
    display: inline-block;
    font-size: 12px;
    color: var(--primary-blue);
    background: rgba(0, 82, 204, 0.1);
    padding: 2px 10px;
    border-radius: 4px;
    margin-bottom: 10px;
    font-weight: bold;
}

.timeline-content h3 { font-size: 1.4rem; margin-bottom: 15px; color: var(--dark-blue); }
.timeline-content p { color: #555; line-height: 1.7; font-style: italic; }

.insight {
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px dashed #ddd;
    color: var(--primary-blue);
    font-weight: bold;
    font-size: 0.95rem;
}