:root {
    --primary-color: #0056b3; /* Medical Blue */
    --secondary-color: #00a8cc; /* Tech Cyan */
    --accent-color: #ff6b6b; /* Subtle accent */
    --text-dark: #333333;
    --text-light: #666666;
    --white: #ffffff;
    --light-bg: #f8f9fa;
    --section-padding: 80px 20px;
    --transition: all 0.3s ease;
}

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

body {
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
    overflow-x: hidden;
}

/* Header */
header {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.navbar {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo span {
    color: var(--secondary-color);
}

.nav-links {
    display: flex;
    gap: 30px;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: var(--transition);
}

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

/* Hero Section */
.hero {
    height: 100vh;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0 20px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(0,168,204,0.1) 0%, rgba(0,0,0,0) 70%);
    border-radius: 50%;
}

.hero-content {
    max-width: 800px;
    z-index: 1;
    animation: fadeInUp 1s ease-out;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    color: var(--primary-color);
    line-height: 1.2;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 40px;
}

.cta-button {
    display: inline-block;
    padding: 12px 30px;
    background-color: var(--primary-color);
    color: var(--white);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: var(--transition);
    border: 2px solid var(--primary-color);
}

.cta-button:hover {
    background-color: transparent;
    color: var(--primary-color);
}

/* About Section */
.about {
    padding: var(--section-padding);
    background-color: var(--white);
}

.section-container {
    max-width: 1000px;
    margin: 0 auto;
    text-align: center;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--text-dark);
    position: relative;
    padding-bottom: 15px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--secondary-color);
}

.about-content {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-top: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* Features Grid */
.features {
    padding: var(--section-padding);
    background-color: var(--light-bg);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    padding-top: 40px;
}

.feature-card {
    background: var(--white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: var(--transition);
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-10px);
}

.feature-icon {
    font-size: 2.5rem;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.feature-title {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: var(--text-dark);
}

/* Contact Section */
.contact {
    padding: var(--section-padding);
    background-color: var(--white);
}

.contact-info {
    max-width: 600px;
    margin: 40px auto 0;
    background: var(--light-bg);
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 20px;
    gap: 15px;
}

.contact-item svg {
    min-width: 24px;
    color: var(--primary-color);
    margin-top: 5px;
}

.contact-label {
    font-weight: 700;
    display: block;
    margin-bottom: 5px;
    color: var(--text-dark);
}

.contact-value {
    color: var(--text-light);
}

/* Footer */
footer {
    background-color: #1a1a1a;
    color: #ffffff;
    padding: 40px 20px;
    text-align: center;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    display: inline-block;
}

.copyright {
    color: #888;
    font-size: 0.9rem;
    margin-top: 20px;
    padding-top: 20px;
}

.icp {
    margin-top: 8px;
    font-size: 0.85rem;
}

.icp a {
    color: #888;
    text-decoration: none;
    transition: color 0.3s ease;
}

.icp a:hover {
    color: #cccccc;
}

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

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none; /* Simplification for single page mobile view */
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .feature-card {
        margin-bottom: 20px;
    }
}