:root {
    --primary-color: #086AD8;
    --secondary-color: #17a2b8;
    --accent-color: #28a745;
    --dark-color: #2c3e50;
    --light-color: #f8f9fa;
    --text-color: #333;
    --text-muted: #6c757d;
    --border-color: #dee2e6;
    --shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    overflow-x: hidden;
}

/* Header Styles */
.header {
    padding: 20px 0;
    background-color: #fff;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo {
    height: 40px;
}

.navbar-nav .nav-link {
    font-weight: 500;
    padding: 0.5rem 1rem;
    color: var(--dark-color);
    transition: var(--transition);
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: var(--primary-color);
}

/* Hero Section */
.hero-section {
    padding: 100px 0;
    background-color: #f8f9fa;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background-color: rgba(8, 106, 216, 0.05);
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.main-title {
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 20px;
    line-height: 1.2;
}

.subtitle {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 30px;
}

.hero-features {
    margin-bottom: 30px;
}

.feature-item {
    margin-bottom: 20px;
}

.feature-item h3 {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 10px;
}

.feature-item p {
    color: var(--text-muted);
}

.hero-buttons .btn {
    padding: 12px 30px;
    font-weight: 500;
    border-radius: 50px;
    margin-right: 15px;
    transition: var(--transition);
}

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

.btn-primary:hover {
    background-color: #0756b3;
    border-color: #0756b3;
}

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

.btn-outline-primary:hover {
    background-color: var(--primary-color);
    color: #fff;
}

.hero-image {
    text-align: center;
}

/* Features Section */
.features-section {
    padding: 100px 0;
    background-color: #fff;
}

.section-header {
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 20px;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto;
}

.feature-card {
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;
    height: 100%;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 70px;
    height: 70px;
    line-height: 70px;
    border-radius: 50%;
    background-color: rgba(8, 106, 216, 0.1);
    color: var(--primary-color);
    font-size: 1.8rem;
    margin: 0 auto 20px;
}

.feature-card h3 {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 15px;
}

.feature-card p {
    color: var(--text-muted);
}

/* About Section */
.about-section {
    padding: 100px 0;
    background-color: #f8f9fa;
}

.about-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 20px;
}

.about-content p {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.quote {
    padding: 20px;
    border-left: 4px solid var(--primary-color);
    background-color: rgba(8, 106, 216, 0.05);
    margin: 30px 0;
}

.quote p {
    font-style: italic;
    margin-bottom: 0;
}

/* Contact Section */
.contact-section {
    padding: 100px 0;
    background-color: #fff;
}

.contact-qrcode {
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;
}

.contact-qrcode img {
    max-width: 200px;
    margin-bottom: 20px;
}

.contact-qrcode p {
    color: var(--text-muted);
    margin-bottom: 10px;
}

/* Footer */
.footer {
    padding: 80px 0 30px;
    background-color: var(--dark-color);
    color: #fff;
}

.footer-logo {
    margin-bottom: 20px;
}

.footer-logo .logo {
    height: 40px;
}

.footer p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 20px;
}

.footer h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: #fff;
}

.footer-links,
.footer-contact {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li,
.footer-contact li {
    margin-bottom: 10px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: #fff;
    text-decoration: none;
}

.footer-contact li {
    display: flex;
    align-items: center;
    color: rgba(255, 255, 255, 0.7);
}

.footer-contact li i {
    margin-right: 10px;
    color: var(--primary-color);
}

.footer-bottom {
    padding-top: 30px;
    margin-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.copyright {
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 0;
}

.beian {
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    transition: var(--transition);
    margin-left: 10px;
}

.beian:hover {
    color: #fff;
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 991px) {
    .main-title {
        font-size: 2.2rem;
    }
    
    .hero-section {
        padding: 80px 0;
    }
    
    .hero-image {
        margin-top: 50px;
    }
    
    .features-section,
    .about-section,
    .contact-section {
        padding: 80px 0;
    }
    
    .about-image {
        margin-bottom: 50px;
    }
}

@media (max-width: 767px) {
    .main-title {
        font-size: 1.8rem;
    }
    
    .hero-section {
        padding: 60px 0;
    }
    
    .features-section,
    .about-section,
    .contact-section {
        padding: 60px 0;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .feature-card {
        margin-bottom: 30px;
    }
    
    .footer {
        padding: 60px 0 30px;
    }
}