:root { 
    --primary: #2E7D32; 
    --primary-light: #4CAF50; 
    --secondary: #1565C0; 
    --accent: #FF9800; 
    --dark: #121212; 
    --darker: #0a0a0a; 
    --light: #f5f5f5; 
    --gray: #2d2d2d; 
    --card-bg: rgba(30, 30, 30, 0.7); 
    --transition: all 0.3s ease; 
}

* { 
    margin: 0; 
    padding: 0; 
    box-sizing: border-box; 
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; 
}

body { 
    background: linear-gradient(135deg, var(--darker), var(--dark)); 
    color: var(--light); 
    min-height: 100vh; 
    line-height: 1.6; 
    overflow-x: hidden; 
}

/* 导航栏 */ 
.navbar { 
    display: flex; 
    justify-content: space-between; 
    align-items: center;
    padding: 1rem 5%;
    background: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid rgba(76, 175, 80, 0.3);
}

.logo-container { 
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 24px;
}

.site-name {
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(to right, var(--primary), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links { 
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--light);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    padding: 0.5rem 0;
    position: relative;
}

.nav-links a:hover { 
    color: var(--accent);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: var(--transition);
}

.nav-links a:hover::after { 
    width: 100%;
}

/* 英雄区域 */
.hero {
    height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 0 5%;
}

.hero::before { 
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('../images/server-panorama.jpg') center/cover no-repeat;
    filter: brightness(0.4);
    z-index: -1;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    z-index: 1;
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(to right, var(--primary), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.hero p {
    font-size: 1.4rem;
    margin-bottom: 2.5rem;
    color: #ccc;
}

.btn-container {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin: 2rem 0;
}

.btn { 
    display: inline-block;
    padding: 0.8rem 2rem;
    background: linear-gradient(to right, var(--primary), var(--primary-light));
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(76, 175, 80, 0.3);
}

.btn:hover { 
    transform: translateY(-3px);
    box-shadow: 0 7px 20px rgba(76, 175, 80, 0.4);
}

.btn-outline { 
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

.stats-container {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 2rem;
}

.stat-card { 
    background: rgba(46, 125, 50, 0.2);
    padding: 1.5rem;
    border-radius: 10px;
    min-width: 180px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(76, 175, 80, 0.3);
}

.stat-number { 
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.stat-label { 
    font-size: 1.1rem;
    color: #ccc;
}

/* 核心服务区域 */
.services-section { 
    padding: 5rem 5%;
    background: var(--darker);
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--light);
}

.section-header p {
    font-size: 1.2rem;
    color: #aaa;
    max-width: 700px;
    margin: 0 auto;
}

.services-grid { 
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card { 
    background: var(--card-bg);
    border-radius: 15px;
    overflow: hidden;
    transition: var(--transition);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(76, 175, 80, 0.1);
}

.service-card:hover { 
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4);
    border-color: rgba(76, 175, 80, 0.3);
}

.card-header { 
    padding: 1.5rem;
    background: rgba(76, 175, 80, 0.1);
    border-bottom: 1px solid rgba(76, 175, 80, 0.2);
    position: relative;
}

.card-header h3 { 
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    color: var(--primary);
}

.card-badge {
    position: absolute;
    top: -15px;
    right: 20px;
    background: var(--accent);
    color: var(--dark);
    padding: 0.3rem 1rem;
    border-radius: 20px;
    font-weight: 700;
    font-size: 0.9rem;
}

.card-body {
    padding: 1.5rem;
}

.card-body p {
    margin-bottom: 1.5rem;
    color: #ccc;
}

.card-footer { 
    padding: 1rem 1.5rem;
    background: rgba(20, 20, 20, 0.5);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* 特色内容区域 */ 
.featured-section {
    padding: 5rem 5%;
}

.featured-grid { 
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.featured-card {
    border-radius: 15px;
    overflow: hidden;
    position: relative;
    height: 350px;
}

.featured-card img { 
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

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

.featured-content {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 2rem;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
}

.featured-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: white;
}

.featured-content p {
    color: #ddd;
}

/* 信任建设区域 */
.trust-section { 
    padding: 5rem 5%;
    background: var(--darker);
}

.trust-container {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.trust-content {
    flex: 1;
}

.trust-content h2 { 
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--light);
}

.trust-content p { 
    font-size: 1.1rem;
    color: #ccc;
    margin-bottom: 2rem;
    line-height: 1.8;
}

.trust-stats {
    flex: 1;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.trust-stat { 
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 10px;
    text-align: center;
    border: 1px solid rgba(76, 175, 80, 0.1);
}

.trust-stat .number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.trust-stat .label { 
    font-size: 1.1rem;
    color: #ccc;
}

/* 页脚 */ 
footer { 
    background: rgba(10, 10, 10, 0.9);
    padding: 3rem 5%;
    border-top: 1px solid rgba(76, 175, 80, 0.2);
}

.footer-grid { 
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-column h3 {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    color: var(--primary);
    position: relative;
    padding-bottom: 0.5rem;
}

.footer-column h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 2px;
    background: var(--primary);
}

.footer-column p, .footer-column a {
    color: #aaa;
    margin-bottom: 0.8rem;
    display: block;
    text-decoration: none;
    transition: var(--transition);
}

.footer-column a:hover {
    color: var(--primary);
    padding-left: 5px;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a { 
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--gray);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.social-links a:hover { 
    background: var(--primary);
    transform: translateY(-5px);
}

.copyright {
    text-align: center;
    padding-top: 2rem;
    margin-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #777;
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .trust-container {
        flex-direction: column;
    }
    
    .hero h1 {
        font-size: 3rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero p {
        font-size: 1.2rem;
    }
    
    .stats-container {
        flex-direction: column;
        align-items: center;
    }
    
    .stat-card {
        width: 100%;
        max-width: 300px;
    }
    
    .btn-container {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .hero {
        height: 90vh;
    }
    
    .hero h1 { 
        font-size: 2rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
}