:root {
    --primary-color: #007bff;
    --text-color: #333;
    --background-color: #ffffff;
    --section-bg: #f8f9fa;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: var(--background-color);
    color: var(--text-color);
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background-color: white;
    padding: 2rem 0;
    text-align: center;
    border-bottom: 1px solid #eee;
}

.logo {
    max-width: 300px;
    height: auto;
    margin-bottom: 1rem;
}

h1 {
    margin: 0;
    font-size: 2rem;
    color: var(--primary-color);
    display: none;
}

section {
    margin: 2rem 0;
    padding: 2rem;
    background: var(--section-bg);
    border-radius: 8px;
}

h2 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-size: 1.75rem;
}

.notice {
    background-color: #dc3545;
    color: white;
    padding: 0.75rem;
    text-align: center;
    font-size: 0.95rem;
}

.app-access {
    text-align: center;
    padding: 1.5rem 0;
    margin-top: 1rem;
}

.app-note {
    color: #666;
    margin: 0 0 1rem 0;
    font-size: 0.95rem;
}

.app-button {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    padding: 0.8rem 1.5rem;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 500;
    transition: background-color 0.2s;
}

.app-button:hover {
    background-color: #0056b3;
}

.faq-item {
    margin-bottom: 1.5rem;
    background: white;
    padding: 1.25rem;
    border-radius: 6px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.faq-item h3 {
    color: var(--primary-color);
    margin: 0 0 0.75rem 0;
    font-size: 1.1rem;
}

.faq-item p {
    margin: 0 0 1rem 0;
    color: #666;
}

.download-links {
    list-style: none;
    padding: 0;
    margin: 0.5rem 0 0 0;
}

.download-links li {
    margin: 0.5rem 0;
}

.download-links a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.download-links a:hover {
    text-decoration: underline;
}

.certificate-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.certificate-link:hover {
    text-decoration: underline;
}

.contact-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.contact-link:hover {
    text-decoration: underline;
}

.main-nav {
    margin-top: 1.5rem;
}

.main-nav a {
    color: var(--text-color);
    text-decoration: none;
    margin: 0 1rem;
    padding: 0.5rem 0;
    font-weight: 500;
    position: relative;
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--primary-color);
}

.main-nav a.active:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--primary-color);
}

.downloads-section {
    margin: 3rem 0;
}

.section-description {
    color: #666;
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

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

.download-card {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: transform 0.2s;
}

.download-card:hover {
    transform: translateY(-2px);
}

.download-card img {
    width: 64px;
    height: 64px;
    margin-bottom: 1.5rem;
}

.download-card h3 {
    margin: 0 0 1.5rem 0;
    color: var(--text-color);
    font-size: 1.2rem;
}

.certificate-download {
    text-align: center;
    margin-top: 2rem;
}

.download-button {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    padding: 0.8rem 1.5rem;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 500;
    transition: background-color 0.2s;
}

.download-button:hover {
    background-color: #0056b3;
}

footer {
    margin-top: 3rem;
    padding: 2rem 0;
    background-color: var(--section-bg);
    border-top: 1px solid #eee;
    text-align: center;
    color: #666;
}

footer p {
    margin: 0;
    font-size: 0.95rem;
}