/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
}

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

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
}

.nav-link {
    font-weight: 500;
    margin-left: 1.5rem;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #007bff !important;
}

/* Hero区域 */
.hero-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
}

.hero-section h1 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.hero-section p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

/* 测评卡片 */
.card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 30px rgba(0,0,0,0.1) !important;
}

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

/* 关于我们 */
#about {
    padding: 8rem 0;
}

/* 客户评价 */
.testimonial-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 25px rgba(0,0,0,0.1) !important;
}

/* 联系我们 */
#contact {
    padding: 8rem 0;
}

.form-control {
    border-radius: 50px;
    padding: 1rem;
    border: 1px solid #e0e0e0;
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: #007bff;
    box-shadow: 0 0 0 0.2rem rgba(0,123,255,0.25);
}

.btn {
    border-radius: 50px;
    padding: 0.75rem 2rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,123,255,0.3);
}

/* 页脚 */
footer {
    background-color: #1a1a1a;
    color: #fff;
}

footer a {
    color: #ccc;
    transition: color 0.3s ease;
}

footer a:hover {
    color: #007bff;
    text-decoration: none;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-section {
        text-align: center;
        padding-top: 100px;
    }
    
    .hero-section h1 {
        font-size: 2rem;
    }
    
    #about,
    #contact {
        padding: 4rem 0;
    }
    
    .card {
        margin-bottom: 2rem;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.8s ease-out;
}

/* 自定义间距类 */
.py-16 {
    padding-top: 8rem;
    padding-bottom: 8rem;
}

.mb-12 {
    margin-bottom: 6rem;
}

.space-y-4 > * + * {
    margin-top: 1rem;
}

/* 工具类 */
.text-primary {
    color: #007bff !important;
}

.bg-primary {
    background-color: #007bff !important;
}

.btn-primary {
    background-color: #007bff;
    border-color: #007bff;
}

.btn-outline-primary {
    color: #007bff;
    border-color: #007bff;
}

.btn-outline-primary:hover {
    background-color: #007bff;
    color: #fff;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #007bff;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #0056b3;
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 图片懒加载 */
img.lazy {
    opacity: 0;
    transition: opacity 0.3s ease;
}

img.lazy.loaded {
    opacity: 1;
}

/* 无障碍设计 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* 高对比度模式 */
@media (prefers-contrast: high) {
    body {
        color: #000;
        background-color: #fff;
    }
    
    .navbar {
        background-color: #000 !important;
    }
    
    .navbar-brand,
    .nav-link {
        color: #fff !important;
    }
}