/* 英雄区 */
.hero-section {
    height: 100vh;
    min-height: 600px;
    background: linear-gradient(rgba(0, 51, 102, 0.7), rgba(0, 51, 102, 0.7)), url('https://images.unsplash.com/photo-1581091226825-a6a2a5aee158?auto=format&fit=crop&q=80&w=2070') center/cover no-repeat;
    display: flex;
    align-items: center;
    color: white;
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 800px;
    z-index: 2;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* 核心数据墙 */
.stats-section {
    margin-top: -80px;
    position: relative;
    z-index: 10;
}

.stat-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    text-align: center;
    transition: transform 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-10px);
}

.stat-card .number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--bs-primary);
    display: block;
    margin-bottom: 0.5rem;
}

.stat-card .label {
    color: var(--text-muted);
    font-weight: 500;
}

/* 产品方案入口 */
.solution-card {
    border: none;
    border-radius: 15px;
    overflow: hidden;
    transition: all 0.3s ease;
    height: 100%;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.solution-card:hover {
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
}

.solution-card img {
    height: 200px;
    object-fit: cover;
}

.solution-card .card-body {
    padding: 2rem;
}

/* 技术优势区块 */
.tech-item {
    padding: 2rem;
    border-radius: 15px;
    background: #fdfdfd;
    height: 100%;
    transition: all 0.3s;
}

.tech-item:hover {
    background: white;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

.tech-icon {
    width: 60px;
    height: 60px;
    background: rgba(var(--bs-primary-rgb), 0.1);
    color: var(--bs-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

/* 响应式调整 */
@media (max-width: 991px) {
    .hero-content h1 { font-size: 2.5rem; }
    .stats-section { margin-top: 2rem; }
}