/* Global Styles */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

/* Navigation */
.navbar {
    padding: 1rem 0;
    background-color: rgba(0, 0, 0, 0.9) !important;
    transition: all 0.3s ease;
}

.navbar-brand {
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-text {
    font-size: 1.8rem;
    color: #00aaff;
    font-weight: 800;
}

.logo-full {
    font-size: 0.9rem;
    color: #ccc;
    display: none;
}

@media (min-width: 768px) {
    .logo-full {
        display: block;
    }
}

.navbar-nav .nav-link {
    color: #fff !important;
    padding: 0.5rem 1rem;
    margin-left: 0.5rem;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.navbar-nav .nav-link:hover {
    background-color: rgba(0, 170, 255, 0.2);
    color: #00aaff !important;
}

.navbar-nav .nav-item.active .nav-link {
    background-color: rgba(0, 170, 255, 0.3);
    color: #00aaff !important;
}

/* Hero Section */
.hero {
    height: 100vh;
    background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), 
                url('https://picsum.photos/id/1048/1920/1080');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at center, rgba(0, 170, 255, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.hero h1 {
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero p.lead {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero .btn {
    padding: 0.8rem 2rem;
    border-radius: 30px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
}

.hero .btn-primary {
    background: linear-gradient(135deg, #0056b3, #00aaff);
}

.hero .btn-primary:hover {
    background: linear-gradient(135deg, #00aaff, #0056b3);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 170, 255, 0.3);
}

.hero .btn-light {
    background-color: rgba(255, 255, 255, 0.9);
    color: #333;
}

.hero .btn-light:hover {
    background-color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

/* Services Section */
.services {
    padding: 5rem 0;
    background-color: #f8f9fa;
}

.services h2 {
    font-weight: 700;
    margin-bottom: 3rem;
    color: #2c3e50;
}

.service-card {
    background-color: #fff;
    padding: 2.5rem 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 170, 255, 0.1);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
    border-color: rgba(0, 170, 255, 0.3);
}

.service-card i {
    margin-bottom: 1.5rem;
    color: #00aaff;
    transition: all 0.3s ease;
}

.service-card:hover i {
    transform: scale(1.1);
    color: #0056b3;
}

.service-card h3 {
    font-weight: 600;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.service-card p {
    color: #666;
    line-height: 1.7;
}

/* Brand Story Section */
.brand-story {
    padding: 5rem 0;
    background-color: #fff;
}

.brand-story h2 {
    font-weight: 700;
    margin-bottom: 2rem;
    color: #2c3e50;
}

.brand-story p.lead {
    font-size: 1.1rem;
    color: #555;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.story-content {
    max-width: 800px;
    margin: 0 auto;
}

/* Contact Section */
.contact {
    padding: 5rem 0;
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
}

.contact h2 {
    font-weight: 700;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.contact p.lead {
    color: #666;
    margin-bottom: 2rem;
}

.contact .btn {
    padding: 0.8rem 2.5rem;
    border-radius: 30px;
    font-weight: 600;
    background: linear-gradient(135deg, #0056b3, #00aaff);
    border: none;
    transition: all 0.3s ease;
}

.contact .btn:hover {
    background: linear-gradient(135deg, #00aaff, #0056b3);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 170, 255, 0.3);
}

/* Footer */
.footer {
    background-color: #1a1a1a;
    color: #fff;
    padding: 3rem 0 1rem;
}

.footer h5 {
    color: #00aaff;
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.footer p {
    color: #ccc;
    line-height: 1.6;
}

.footer ul {
    list-style: none;
    padding: 0;
}

.footer ul li {
    margin-bottom: 0.8rem;
}

.footer ul li a {
    color: #999;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-block;
}

.footer ul li a:hover {
    color: #00aaff;
    transform: translateX(5px);
}

.footer hr {
    border-color: rgba(255, 255, 255, 0.1);
    margin: 2rem 0;
}

.footer .text-white-50 {
    color: #999;
}

/* Responsive Design */
@media (max-width: 768px) {
    .navbar-brand {
        font-size: 1.2rem;
    }
    
    .logo-full {
        display: none;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero p.lead {
        font-size: 1rem;
    }
    
    .services, .brand-story, .contact {
        padding: 3rem 0;
    }
    
    .service-card {
        margin-bottom: 1.5rem;
    }
    
    .footer .col-md-4 {
        margin-bottom: 2rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .btn {
        padding: 0.6rem 1.5rem;
        font-size: 0.9rem;
    }
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Animation classes */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Additional styles for人文关怀 */
.hero-content {
    position: relative;
    z-index: 2;
}

.navbar-dark .navbar-toggler {
    border-color: rgba(255, 255, 255, 0.3);
}

.navbar-dark .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.8%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Card hover effects */
.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #0056b3, #00aaff, #0056b3);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card {
    position: relative;
    overflow: hidden;
}