body {
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial,
        sans-serif;
    line-height: 1.6;
    color: #333;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    background-color: #f8f9fa;
}

h1 {
    color: #000;
    font-weight: 600;
    margin-bottom: 5px;
    font-size: 2.5em;
}

.last-updated {
    color: #666;
    font-size: 0.9em;
    margin-bottom: 40px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eaeaea;
}

h2 {
    color: #000;
    margin-top: 40px;
    font-weight: 500;
    padding-bottom: 8px;
    border-bottom: 2px solid #5a67d8;
}

h3 {
    color: #2d3748;
    margin-top: 25px;
    font-weight: 500;
    font-size: 1.2em;
}

.faq-section {
    background: white;
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 25px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    border: 1px solid #eaeaea;
}

.faq-section:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: box-shadow 0.2s ease;
}

.question {
    color: #2d3748;
    font-weight: 500;
    margin-bottom: 8px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.question:hover {
    color: #5a67d8;
}

.question::after {
    content: "＋";
    font-size: 1.2em;
    transition: transform 0.3s ease;
}

.question.active::after {
    content: "−";
    transform: rotate(180deg);
}

.answer {
    color: #4a5568;
    padding: 15px 0;
    display: none;
    border-top: 1px solid #eaeaea;
    margin-top: 10px;
}

.answer.active {
    display: block;
}

.tip {
    background-color: #f0fff4;
    border-left: 4px solid #48bb78;
    padding: 12px 15px;
    margin: 15px 0;
    border-radius: 0 8px 8px 0;
}

.tip strong {
    color: #2f855a;
}

.note {
    background-color: #ebf8ff;
    border-left: 4px solid #4299e1;
    padding: 12px 15px;
    margin: 15px 0;
    border-radius: 0 8px 8px 0;
}

.note strong {
    color: #2b6cb0;
}

.feature-highlight {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 25px;
    border-radius: 12px;
    margin: 30px 0;
    text-align: center;
}

.feature-highlight h3 {
    color: white;
    margin-top: 0;
}

a {
    color: #5a67d8;
    text-decoration: none;
    font-weight: 500;
}

a:hover {
    text-decoration: underline;
    text-decoration-thickness: 2px;
}

.app-badge {
    display: inline-block;
    background: linear-gradient(135deg, #000000 0%, #333333 100%);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 500;
    margin: 5px 0;
    font-size: 0.9em;
}

.home-link {
    display: inline-block;
    margin-top: 30px;
    padding: 10px 20px;
    background-color: #5a67d8;
    color: white;
    border-radius: 8px;
    font-weight: 500;
    text-decoration: none;
}

.home-link:hover {
    background-color: #4c51bf;
    text-decoration: none;
}

@media (max-width: 600px) {
    body {
        padding: 15px;
    }

    h1 {
        font-size: 2em;
    }

    .faq-section {
        padding: 20px;
    }
}