* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    background-color: #f5f7fa;
    color: #333;
}

/* ===== 关于我们 Hero ===== */
.about-hero {
    background: linear-gradient(135deg, #0d1b3e 0%, #1a3a7a 100%);
    padding: 80px 40px 70px;
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.about-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 500px;
    height: 500px;
    background: rgba(26, 115, 232, 0.08);
    border-radius: 50%;
    pointer-events: none;
}

.about-hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: rgba(26, 115, 232, 0.06);
    border-radius: 50%;
    pointer-events: none;
}

.about-hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

.about-hero .badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.12);
    color: #8bb3f0;
    font-size: 13px;
    font-weight: 600;
    padding: 4px 18px;
    border-radius: 20px;
    margin-bottom: 16px;
    letter-spacing: 2px;
}

.about-hero h1 {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: 2px;
}

.about-hero h1 span {
    color: #64b5f6;
}

.about-hero p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
    max-width: 600px;
    margin: 0 auto;
}

/* ===== 公司简介 ===== */
.about-section {
    padding: 60px 40px;
    max-width: 1100px;
    margin: 0 auto;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-image {
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.08);
}

.about-image img {
    width: 100%;
    height: 320px;
    object-fit: cover;
    display: block;
}

.about-image .placeholder-img {
    width: 100%;
    height: 320px;
    background: linear-gradient(135deg, #b3d0f7, #8bb3f0);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 20px;
    font-weight: 500;
}

.about-text h2 {
    font-size: 28px;
    font-weight: 700;
    color: #0d1b3e;
    margin-bottom: 8px;
}

.about-text .subtitle {
    font-size: 15px;
    color: #1a73e8;
    font-weight: 500;
    margin-bottom: 20px;
    display: block;
}

.about-text p {
    font-size: 15px;
    line-height: 1.9;
    color: #555;
    margin-bottom: 18px;
}

.about-text p:last-child {
    margin-bottom: 0;
}

/* ===== 核心理念 ===== */
.values-section {
    background: #fff;
    padding: 60px 40px;
}

.values-container {
    max-width: 1100px;
    margin: 0 auto;
}

.section-title {
    text-align: center;
    font-size: 28px;
    font-weight: 700;
    color: #0d1b3e;
    margin-bottom: 8px;
}

.section-subtitle {
    text-align: center;
    color: #888;
    font-size: 15px;
    margin-bottom: 40px;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
}

.value-card {
    background: #f8faff;
    border-radius: 12px;
    padding: 32px 24px;
    text-align: center;
    border: 1px solid #eef3fc;
    transition: transform 0.25s, box-shadow 0.25s;
}

.value-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.06);
}

.value-card .icon {
    font-size: 40px;
    margin-bottom: 12px;
    display: block;
}

.value-card h4 {
    font-size: 17px;
    font-weight: 600;
    color: #0d1b3e;
    margin-bottom: 6px;
}

.value-card p {
    font-size: 13px;
    color: #777;
    line-height: 1.6;
}

/* ===== 发展历程 ===== */
.timeline-section {
    padding: 60px 40px;
    background: #f8faff;
}

.timeline-container {
    max-width: 900px;
    margin: 0 auto;
}

.timeline {
    display: flex;
    flex-direction: column;
    gap: 0;
    position: relative;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 12px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, #1a73e8, #64b5f6);
    border-radius: 3px;
}

.timeline-item {
    position: relative;
    padding: 20px 0 20px 30px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -34px;
    top: 26px;
    width: 16px;
    height: 16px;
    background: #1a73e8;
    border-radius: 50%;
    border: 3px solid #fff;
    box-shadow: 0 0 0 3px #1a73e8;
}

.timeline-item .year {
    font-size: 20px;
    font-weight: 700;
    color: #1a73e8;
    margin-bottom: 2px;
}

.timeline-item .event {
    font-size: 15px;
    color: #555;
    line-height: 1.6;
}

/* ===== 底部咨询 ===== */
.cta-bottom {
    background: linear-gradient(135deg, #0d1b3e, #1a3a7a);
    padding: 36px 40px;
    text-align: center;
    color: #fff;
}

.cta-bottom h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 6px;
}

.cta-bottom p {
    font-size: 14px;
    opacity: 0.85;
    margin-bottom: 18px;
}

.cta-bottom .btn-primary {
    background: #fff;
    color: #0d1b3e;
    padding: 12px 48px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 8px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
    transition: all 0.2s;
    border: none;
    cursor: pointer;
}

.cta-bottom .btn-primary:hover {
    background: #f0f4ff;
    transform: scale(1.02);
}

/* ===== 页脚 ===== */
.footer {
    background: #0a1329;
    color: rgba(255, 255, 255, 0.6);
    text-align: center;
    padding: 20px 40px;
    font-size: 13px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    margin: 0 10px;
}

.footer a:hover {
    color: #fff;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
    .about-hero {
        padding: 50px 16px 40px;
    }

    .about-hero h1 {
        font-size: 28px;
    }

    .about-section {
        padding: 40px 16px;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .about-image img,
    .about-image .placeholder-img {
        height: 200px;
    }

    .about-text h2 {
        font-size: 22px;
    }

    .values-section {
        padding: 40px 16px;
    }

    .section-title {
        font-size: 22px;
    }

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

    .timeline-section {
        padding: 40px 16px;
    }

    .timeline {
        padding-left: 30px;
    }

    .timeline-item {
        padding: 16px 0 16px 20px;
    }

    .timeline-item::before {
        left: -26px;
        width: 14px;
        height: 14px;
    }

    .cta-bottom {
        padding: 28px 16px;
    }

    .cta-bottom h3 {
        font-size: 18px;
    }
}

@media (max-width: 480px) {
    .values-grid {
        grid-template-columns: 1fr;
    }

    .about-hero h1 {
        font-size: 24px;
    }
}