/* 全局样式 */
:root {
    --primary-color: #198754;
    --secondary-color: #6c757d;
    --light-color: #f8f9fa;
    --dark-color: #212529;
}

body {
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
    color: var(--dark-color);
}

/* 导航栏样式 */
.navbar {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.navbar-brand {
    font-weight: 600;
    letter-spacing: 0.5px;
}

.nav-link {
    font-weight: 500;
    transition: all 0.3s ease;
}

.nav-link:hover {
    transform: translateY(-2px);
}

/* 首页横幅 */
header {
    padding: 6rem 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

/* 分隔线 */
.divider {
    height: 3px;
    max-width: 100px;
    margin: 1.5rem auto;
    background-color: var(--primary-color);
    opacity: 1;
}

/* 卡片样式 */
.card {
    transition: all 0.3s ease;
    border-radius: 0.5rem;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1) !important;
}

/* 特性图标 */
.feature {
    transition: all 0.3s ease;
}

.card:hover .feature {
    transform: scale(1.1);
}

/* 按钮样式 */
.btn {
    border-radius: 0.25rem;
    padding: 0.5rem 1.5rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-success {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-success:hover {
    background-color: #146c43;
    border-color: #146c43;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.btn-outline-success {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-outline-success:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

/* 联系我们表单 */
.form-control {
    border-radius: 0.25rem;
    padding: 0.75rem;
    border: 1px solid #ced4da;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(25, 135, 84, 0.25);
}

/* 页脚 */
footer {
    background-color: var(--dark-color);
}

/* 响应式调整 */
@media (max-width: 768px) {
    header {
        padding: 4rem 0;
    }
    
    h1.display-5 {
        font-size: 2.5rem;
    }
    
    .lead {
        font-size: 1rem;
    }
}

/* 动画效果 */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-on-scroll {
    animation: fadeIn 1s ease-out;
}

/* SVG图标样式 */
svg {
    transition: all 0.5s ease;
}

svg:hover {
    filter: brightness(1.1);
}

/* 图片替代SVG的样式 */
.img-hover-zoom {
    overflow: hidden;
    border-radius: 0.5rem;
}

.img-hover-zoom img {
    transition: transform 0.5s ease;
}

.img-hover-zoom:hover img {
    transform: scale(1.05);
}