body {
    font-family: 'Noto Sans JP', sans-serif;
    background-color: #f8fafc;
    color: #334155;
}
.gradient-header {
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
}
.prose h2 {
    position: relative;
    padding-bottom: 0.5rem;
    margin-bottom: 1.5rem;
    margin-top: 3rem;
    color: #1e293b;
    font-weight: 700;
    font-size: 1.5rem;
    border-bottom: 2px solid #e2e8f0;
}
.prose h2::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 60px;
    height: 2px;
    background-color: #6366f1;
}
.prose h3 {
    color: #334155;
    font-weight: 700;
    font-size: 1.25rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.prose p {
    margin-bottom: 1rem;
    line-height: 1.75;
}
.prose ul {
    list-style-type: disc;
    padding-left: 1.5rem;
    margin-bottom: 1.5rem;
}
.prose li {
    margin-bottom: 0.5rem;
}
.screenshot-placeholder {
    background-color: #f1f5f9;
    border: 2px dashed #cbd5e1;
    border-radius: 0.5rem;
    height: 200px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #64748b;
    margin: 1.5rem 0;
    transition: all 0.3s;
}
.screenshot-placeholder:hover {
    border-color: #94a3b8;
    background-color: #e2e8f0;
}
.copy-btn {
    opacity: 0.7;
    transition: all 0.2s;
}
.copy-btn:hover {
    opacity: 1;
    transform: scale(1.05);
}
/* Point Block */
.point-block {
    background-color: #eff6ff;
    border-left: 4px solid #3b82f6;
    padding: 1rem;
    border-radius: 0 0.5rem 0.5rem 0;
    margin: 1.5rem 0;
}