.header-back {
    display: inline-block;
    color: var(--accent-primary);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 8px;
    transition: opacity 0.2s;
}

.header-back:hover {
    opacity: 0.7;
}

.page-title {
    font-size: 1.6rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-content {
    padding: 32px;
    line-height: 1.9;
    color: var(--text-primary);
}

.page-content h2 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-top: 28px;
    margin-bottom: 10px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border-primary);
}

.page-content section:first-of-type h2 {
    margin-top: 12px;
}

.page-content p {
    color: var(--text-secondary);
    font-size: 0.88rem;
    margin-bottom: 8px;
}

.page-content ul {
    padding-left: 20px;
    margin: 8px 0 16px 0;
}

.page-content li {
    color: var(--text-secondary);
    font-size: 0.86rem;
    margin-bottom: 6px;
    line-height: 1.7;
}

.page-content a {
    color: var(--accent-primary);
    text-decoration: none;
}

.page-content a:hover {
    text-decoration: underline;
}

.updated-date {
    font-size: 0.78rem !important;
    color: var(--text-muted) !important;
    margin-bottom: 16px !important;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 8px;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.78rem;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: var(--accent-primary);
}

.contact-intro {
    margin-bottom: 24px !important;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.form-input {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.88rem;
    padding: 10px 14px;
    transition: border-color 0.2s, box-shadow 0.2s;
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

.form-input:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
    line-height: 1.6;
}

select.form-input {
    cursor: pointer;
}

.contact-submit-btn {
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    padding: 12px 28px;
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s, transform 0.15s;
    align-self: flex-start;
}

.contact-submit-btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.contact-submit-btn:active {
    transform: translateY(0);
}

.contact-success {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    text-align: center;
    padding: 40px 20px;
}

.success-icon {
    font-size: 2.5rem;
}

.contact-success h3 {
    font-size: 1.2rem;
    color: var(--text-primary);
}

.contact-success p {
    color: var(--text-secondary);
    font-size: 0.88rem;
}

.back-link {
    color: var(--accent-primary);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    margin-top: 8px;
}

.back-link:hover {
    text-decoration: underline;
}

@media (max-width: 640px) {
    .page-content {
        padding: 20px;
    }

    .page-title {
        font-size: 1.3rem;
    }

    .footer-links {
        gap: 12px;
    }
}

.about-table {
    width: 100%;
    border-collapse: collapse;
}

.about-table th,
.about-table td {
    padding: 14px 16px;
    text-align: left;
    font-size: 0.88rem;
    border-bottom: 1px solid var(--border-primary);
}

.about-table th {
    color: var(--text-muted);
    font-weight: 500;
    width: 120px;
    white-space: nowrap;
}

.about-table td {
    color: var(--text-primary);
}

.about-table a {
    color: var(--accent-primary);
    text-decoration: none;
}

.about-table a:hover {
    text-decoration: underline;
}

.guide-intro {
    font-size: 0.92rem !important;
    line-height: 1.9;
    margin-bottom: 24px !important;
}

.toc {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-sm);
    padding: 18px 24px;
    margin-bottom: 24px;
}

.toc h2 {
    margin-top: 0 !important;
    margin-bottom: 10px !important;
    border-bottom: none !important;
    font-size: 0.9rem !important;
}

.toc ol {
    padding-left: 20px;
    margin: 0;
}

.toc li {
    margin-bottom: 4px;
}

.toc a {
    color: var(--accent-primary);
    text-decoration: none;
    font-size: 0.85rem;
}

.toc a:hover {
    text-decoration: underline;
}

.guide-note {
    background: rgba(0, 212, 212, 0.05);
    border-left: 3px solid var(--accent-primary);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    padding: 14px 18px;
    margin: 14px 0;
}

.guide-note strong {
    display: block;
    margin-bottom: 6px;
    color: var(--text-primary);
    font-size: 0.85rem;
}

.guide-note p {
    margin-bottom: 4px !important;
}

.guide-note code {
    background: var(--bg-tertiary);
    padding: 1px 6px;
    border-radius: 3px;
    font-size: 0.82rem;
    color: var(--accent-primary);
}

.guide-table {
    width: 100%;
    border-collapse: collapse;
    margin: 14px 0;
    font-size: 0.85rem;
}

.guide-table th,
.guide-table td {
    padding: 10px 14px;
    text-align: left;
    border-bottom: 1px solid var(--border-primary);
}

.guide-table th {
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.guide-table td {
    color: var(--text-secondary);
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
    margin-top: 14px;
}

.tip-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-sm);
    padding: 18px;
    transition: border-color 0.2s;
}

.tip-card:hover {
    border-color: var(--accent-primary);
}

.tip-icon {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.tip-card h3 {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.tip-card p {
    font-size: 0.82rem !important;
    line-height: 1.7;
}

.faq-category {
    margin-bottom: 24px;
}

.faq-item {
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-sm);
    margin-bottom: 8px;
    overflow: hidden;
    transition: border-color 0.2s;
}

.faq-item:hover {
    border-color: rgba(0, 212, 212, 0.3);
}

.faq-item summary {
    padding: 14px 18px;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: background 0.2s;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::before {
    content: '▶';
    font-size: 0.65rem;
    color: var(--accent-primary);
    transition: transform 0.2s;
    flex-shrink: 0;
}

.faq-item[open] summary::before {
    transform: rotate(90deg);
}

.faq-item summary:hover {
    background: var(--bg-tertiary);
}

.faq-answer {
    padding: 0 18px 16px 18px;
    border-top: 1px solid var(--border-primary);
}

.faq-answer p:first-child {
    margin-top: 14px;
}

.example-section {
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
    overflow: hidden;
    transition: border-color 0.2s;
}

.example-section:hover {
    border-color: rgba(0, 212, 212, 0.3);
}

.example-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 18px 20px;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-primary);
}

.example-icon {
    font-size: 1.6rem;
}

.example-header h2 {
    margin: 0 !important;
    padding: 0 !important;
    border: none !important;
    font-size: 1rem !important;
}

.example-body {
    padding: 18px 20px;
}

.example-body h3 {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-top: 14px;
    margin-bottom: 8px;
}

.example-body h3:first-child {
    margin-top: 0;
}

.keyword-example {
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    margin: 12px 0;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}

.keyword-example strong {
    color: var(--text-secondary);
    font-size: 0.82rem;
    margin-right: 4px;
}

.keyword-tag {
    background: rgba(0, 212, 212, 0.1);
    color: var(--accent-primary);
    border: 1px solid rgba(0, 212, 212, 0.2);
    border-radius: 20px;
    padding: 3px 12px;
    font-size: 0.78rem;
    font-weight: 500;
}

.example-benefit {
    background: rgba(0, 212, 212, 0.05);
    border-left: 3px solid var(--accent-primary);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    padding: 12px 16px;
    margin-top: 12px;
}

.example-benefit strong {
    display: block;
    margin-bottom: 4px;
    font-size: 0.84rem;
    color: var(--text-primary);
}

.example-benefit p {
    margin-bottom: 0 !important;
}

.cta-section {
    text-align: center;
    padding: 32px 20px;
    margin-top: 12px;
    border-top: 1px solid var(--border-primary);
}

.cta-section h2 {
    border: none !important;
    font-size: 1.15rem !important;
}

.cta-button {
    display: inline-block;
    background: var(--gradient-primary);
    color: white !important;
    text-decoration: none !important;
    padding: 12px 32px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.92rem;
    margin-top: 12px;
    transition: opacity 0.2s, transform 0.15s;
}

.cta-button:hover {
    opacity: 0.9;
    transform: translateY(-1px);
    text-decoration: none !important;
}

.gform-wrapper {
    margin: -10px -10px 0 -10px;
}

.gform-wrapper iframe {
    width: 100%;
    min-height: 800px;
}