:root {
    --ink-black: #333;
    --ink-gray: #666;
    --paper-white: #f9f6f2;
    --accent-color: #8B4513;
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Noto Serif SC', serif;
    background: var(--paper-white);
    color: var(--ink-black);
    background-image: url('data:image/svg+xml;utf8,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><rect width="100" height="100" fill="none" stroke="%23d4d4d4" stroke-width="0.5" stroke-dasharray="2,2"/></svg>');
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    margin-bottom: 6rem;
}

.ink-header {
    text-align: center;
    margin-bottom: 4rem;
    position: relative;
}

.ink-header h1 {
    font-size: 3rem;
    margin: 0;
    padding: 2rem 0;
    position: relative;
    display: inline-block;
}

.ink-header h1::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 10%;
    right: 10%;
    height: 2px;
    background: var(--ink-black);
    opacity: 0.2;
}

.subtitle {
    font-size: 1.2rem;
    color: var(--ink-gray);
    margin-top: 1rem;
}

.course-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.course-card {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    position: relative;
    transition: transform 0.3s ease;
}

.course-card:hover {
    transform: translateY(-5px);
}

.course-card h2 {
    font-size: 1.5rem;
    margin: 1rem 0;
    text-align: center;
}

.ink-divider {
    height: 1px;
    background: var(--ink-black);
    opacity: 0.1;
    margin: 1rem 0;
}

.course-card ul {
    list-style: none;
    padding: 0;
    margin: 2rem 0;
}

.course-card li {
    margin: 1rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.course-card li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--accent-color);
}

.price {
    font-size: 1.2rem;
    color: var(--accent-color);
    text-align: center;
    margin-bottom: 1rem;
}

.price-tag {
    font-size: 2rem;
    text-align: center;
    margin: 1.5rem 0;
    color: var(--accent-color);
    font-weight: bold;
}

.ink-button {
    display: block;
    text-align: center;
    padding: 1rem 2rem;
    background: var(--ink-black);
    color: white;
    text-decoration: none;
    border-radius: 4px;
    transition: background 0.3s ease;
}

.ink-button:hover {
    background: var(--accent-color);
}

footer {
    text-align: center;
    margin-top: 4rem;
    padding: 2rem 0;
    color: var(--ink-gray);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

footer .ink-button {
    min-width: 200px;
}

@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .ink-header h1 {
        font-size: 2rem;
    }
    
    .course-cards {
        grid-template-columns: 1fr;
    }
}

.fixed-bottom {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(5px);
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.fixed-bottom .ink-button {
    min-width: 200px;
    margin: 0;
}