.tool-page-content h1 {
    font-size: 2.5rem;
    margin-bottom: 30px;
    text-align: center;
}

.tool-intro {
    max-width: 800px;
    margin: 0 auto 40px;
    text-align: center;
    color: var(--text-light);
}

.placeholder-app-ui {
    padding: 10px;
    border: 2px dashed #ccc;
    text-align: center;
    margin: 20px 0;
    background: #fff;
    border-radius: 8px;
    color: #999;
}

.tool-info-section {
    max-width: 800px;
    margin: 60px auto 0;
}

.tool-info-section h2 {
    margin-bottom: 20px;
    font-size: 1.5rem;
}

.tool-info-section ul {
    padding-left: 20px;
    margin-bottom: 20px;
}

.tool-info-section li {
    margin-bottom: 10px;
}

.extension-promo {
    margin-top: 50px;
    padding: 40px 0;
    background: #fdfdfd;
    border-top: 1px solid #eee;
}

.promo-card {
    margin: 0 auto;
    padding: 30px;
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.02);
    text-align: center;
}

.promo-card .promo-emoji {
    font-size: 2rem;
    margin-bottom: 15px;
}

.promo-card p {
    font-size: 1.1rem;
    line-height: 1.6;
    color: #333;
    margin-bottom: 25px;
}

.promo-card .btn-primary {
    padding: 12px 30px;
    font-weight: bold;
}