/* 页面基础 */
body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    color: #334155;
    background: #fff;
    line-height: 1.6;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; display: block; }

/* 容器 */
.about-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Hero 区域 */
.about-hero {
    padding: 80px 0 60px;
    text-align: center;
    background: linear-gradient(180deg, #f8fafc 0%, #fff 100%);
    border-bottom: 1px solid #edf0f5;
}
.about-hero h1 {
    font-size: 42px;
    font-weight: 700;
    color: #0f172a;
    margin: 0 0 16px;
    letter-spacing: -0.5px;
}
.about-hero p {
    font-size: 18px;
    color: #64748b;
    max-width: 640px;
    margin: 0 auto;
}

/* 通用区块 */
.about-section {
    padding: 48px 0;
}

.about-section-muted {
    background: #f8fafc;
}

.about-section-title {
    font-size: 32px;
    font-weight: 700;
    color: #0f172a;
    text-align: center;
    margin: 0 0 12px;
}
.about-section-subtitle {
    font-size: 16px;
    color: #64748b;
    text-align: center;
    margin: 0 0 32px;
}

/* 公司介绍 */
.about-intro {
    display: grid;
    grid-template-columns: 1fr;
    gap: 56px;
    align-items: start;
}
.about-intro-text h3 {
    font-size: 24px;
    font-weight: 600;
    color: #0f172a;
    margin: 0 0 16px;
}
.about-intro-text p {
    font-size: 16px;
    color: #475569;
    margin: 0 0 16px;
}

/* 产品矩阵 */
.about-products {
    max-width: 1200px;
    margin: 0 auto;
}
.about-product-card {
    display: flex;
    gap: 40px;
    align-items: center;
    background: #fff;
    border-radius: 16px;
    padding: 32px;
    border: 1px solid #edf0f5;
    transition: box-shadow 0.2s, transform 0.2s;
}
.about-product-card:hover {
    box-shadow: 0 8px 32px rgba(15, 23, 42, 0.06);
    transform: translateY(-2px);
}
.about-product-image {
    flex: 0 0 45%;
    max-width: 45%;
}
.about-product-image img {
    width: 100%;
    height: 280px;
    object-fit: cover;
    border-radius: 12px;
    display: block;
}
.about-product-content {
    flex: 0 0 55%;
    max-width: 55%;
}
.about-product-badge {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: #2563eb;
    background: rgba(37, 99, 235, 0.08);
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: 16px;
}
.about-product-card h3 {
    font-size: 22px;
    font-weight: 600;
    color: #0f172a;
    margin: 0 0 12px;
}
.about-product-card p {
    font-size: 15px;
    color: #475569;
    margin: 0 0 16px;
}
.about-product-features {
    list-style: none;
    padding: 0;
    margin: 0;
}
.about-product-features li {
    font-size: 14px;
    color: #64748b;
    padding: 6px 0;
    padding-left: 20px;
    position: relative;
}
.about-product-features li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 13px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #2563eb;
}


/* 服务场景 */
.about-scenes {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.about-scene-card {
    background: #fff;
    border-radius: 12px;
    padding: 20px;
    border: 1px solid #edf0f5;
    transition: box-shadow 0.2s, transform 0.2s;
}
.about-scene-card:hover {
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.05);
    transform: translateY(-2px);
}
.about-scene-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    background: linear-gradient(135deg, #2563eb, #7c3aed);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 20px;
    margin-bottom: 16px;
}
.about-scene-card h4 {
    font-size: 17px;
    font-weight: 600;
    color: #0f172a;
    margin: 0 0 8px;
}
.about-scene-card p {
    font-size: 14px;
    color: #64748b;
    margin: 0;
    line-height: 1.5;
}

/* 服务客户 */
.about-customers {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 32px;
    align-items: center;
    justify-items: center;
}
.about-customers-item {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 60px;
    width: 100%;
}
.about-customers-item img {
    height: 36px;
    width: auto;
    max-width: 100%;
    transition: transform 0.2s;
}
.about-customers-item img:hover {
    transform: scale(1.05);
}



/* 响应式 */
@media (max-width: 1024px) {
    .about-intro { grid-template-columns: 1fr; }
    .about-product-card { flex-direction: column; gap: 24px; }
    .about-product-image, .about-product-content { flex: 0 0 auto; max-width: 100%; width: 100%; }
    .about-scenes { grid-template-columns: repeat(2, 1fr); }
    .about-customers { grid-template-columns: repeat(4, 1fr); }
}
@media (max-width: 768px) {
    .about-hero h1 { font-size: 32px; }
    .about-section { padding: 40px 0; }
    .about-section-title { font-size: 24px; }
    .about-scenes { grid-template-columns: 1fr; }
    .about-customers { grid-template-columns: repeat(3, 1fr); gap: 24px; }
    .about-customers-item img { height: 32px; }
    .about-product-card { padding: 24px; }
    .about-product-image img { height: 200px; }
}