.app-header {
    text-align: center;
    padding: 4rem 2rem;
    background: linear-gradient(135deg, #f8fafc 0%, #ffffff 100%);
    margin-bottom: 3rem;
    position: relative;
    border-bottom: 1px solid rgba(0,0,0,0.1);
}

.features-section .review-notice {
    background-color: var(--primary-color);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 2rem;
    font-weight: 500;
    box-shadow: 0 4px 6px -1px rgba(59, 130, 246, 0.3);
    max-width: fit-content;
    margin: 0 auto 2.5rem;
}

.features-section .review-notice .info-icon {
    flex-shrink: 0;
}

.app-header-content {
    max-width: var(--max-width);
    margin: 0 auto;
}

.app-header img {
    width: 96px;
    height: 96px;
    border-radius: 20px;
    margin-bottom: 1.5rem;
    box-shadow: var(--card-shadow);
    background: white;
    padding: 8px;
}

.app-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.app-header p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.features-section,
.privacy-section {
    max-width: 800px;
    margin: 0 auto 4rem;
    padding: 0 2rem;
}

.feature-card,
.privacy-card {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--card-shadow);
}

.feature-card h3,
.privacy-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.5rem;
    font-weight: 600;
}

.feature-card p,
.privacy-card p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.privacy-card ul {
    list-style-type: none;
    margin: 1rem 0;
}

.privacy-card li {
    margin-bottom: 0.75rem;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-secondary);
    line-height: 1.5;
}

.privacy-card li::before {
    content: "•";
    color: var(--primary-color);
    position: absolute;
    left: 0;
}

.privacy-card ul {
    list-style-type: none;
    margin: 1rem 0;
}

.privacy-card li {
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-secondary);
}

.privacy-card li::before {
    content: "•";
    color: var(--primary-color);
    position: absolute;
    left: 0;
}

@media (max-width: 768px) {
    .app-header {
        padding: 3rem 1.5rem;
    }

    .features-section .review-notice {
        padding: 0.75rem 1rem;
        font-size: 0.95rem;
        margin-bottom: 2rem;
    }

    .app-header h1 {
        font-size: 2rem;
    }

    .app-header p {
        font-size: 1.1rem;
    }

    .features-section,
    .privacy-section {
        padding: 0 1.5rem;
    }

    .feature-card,
    .privacy-card {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .app-header {
        padding: 2rem 1rem;
    }

    .app-header img {
        width: 80px;
        height: 80px;
    }

    .features-section,
    .privacy-section {
        padding: 0 1rem;
    }

    .feature-card,
    .privacy-card {
        padding: 1.5rem;
    }

    .feature-card h3,
    .privacy-card h3 {
        font-size: 1.25rem;
    }

    .feature-card p,
    .privacy-card p {
        font-size: 1rem;
    }

    .privacy-card li {
        font-size: 0.95rem;
        margin-bottom: 0.5rem;
    }
}