.document-page {
    --document-width: 800px;
    --document-section-gap: 44px;
    --document-page-padding: 2rem;
    max-width: none;
    min-height: calc(100vh - var(--header-height) - 170px);
    display: flex;
    justify-content: center;
    align-items: stretch;
    padding-block: var(--document-page-padding) 2.8rem;
}

.document-shell {
    width: min(100%, var(--document-width));
    min-height: max(620px, calc(100vh - var(--header-height) - 220px));
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    box-shadow: 0 1px 2px rgba(16, 24, 40, 0.04), 0 10px 24px rgba(16, 24, 40, 0.05);
}

.document-header {
    padding: 44px 48px 34px;
    border-bottom: 1px solid var(--border);
}

.document-type {
    display: inline-flex;
    min-height: 30px;
    align-items: center;
    gap: 0.45rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--surface-muted);
    color: var(--text-sub);
    font-size: 0.84rem;
    font-weight: 500;
    line-height: 1.3;
    padding: 0.28rem 0.55rem;
}

.document-type strong {
    color: var(--text-main);
    font-weight: 700;
}

.document-title {
    margin-top: 1rem;
    color: var(--text-main);
    font-size: 32px;
    font-weight: 700;
    line-height: 1.25;
}

.document-description {
    max-width: 680px;
    margin-top: 1rem;
    color: var(--text-sub);
    font-size: 16px;
    font-weight: 400;
    line-height: 1.75;
}

.document-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.7rem;
    margin-top: 1.2rem;
}

.document-meta div {
    display: inline-flex;
    min-height: 30px;
    align-items: center;
    gap: 0.4rem;
    border-radius: 6px;
    background: var(--surface-muted);
    color: var(--text-sub);
    padding: 0.28rem 0.55rem;
    font-size: 0.86rem;
    line-height: 1.3;
}

.document-meta dt {
    font-weight: 600;
}

.document-meta dd {
    color: var(--text-main);
    font-weight: 600;
}

.document-toc {
    padding: 32px 48px 0;
}

.document-summary {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.75rem;
    padding: 28px 48px 0;
}

.document-summary-item {
    min-width: 0;
    display: grid;
    gap: 0.35rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface-muted);
    padding: 0.85rem;
}

.document-summary-item span {
    color: var(--text-sub);
    font-size: 0.82rem;
    font-weight: 700;
}

.document-summary-item strong {
    color: var(--text-main);
    font-size: 0.95rem;
    font-weight: 850;
    line-height: 1.45;
}

.document-toc h2 {
    margin: 0 0 1rem;
    color: var(--text-main);
    font-size: 20px;
    font-weight: 600;
    line-height: 1.4;
}

.document-toc ol {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.5rem 0.8rem;
    margin: 0;
    padding: 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface-muted);
}

.document-toc a {
    display: inline-flex;
    min-height: 30px;
    align-items: center;
    color: var(--text-sub);
    font-size: 0.95rem;
    font-weight: 500;
    line-height: 1.45;
    text-decoration: none;
}

.document-toc a:hover {
    color: var(--primary);
}

.document-content {
    padding: 40px 48px 48px;
    color: var(--text-main);
    font-size: 16px;
    font-weight: 400;
    line-height: 1.75;
}

.document-section {
    scroll-margin-top: calc(var(--header-height) + 24px);
}

.document-section + .document-section {
    margin-top: var(--document-section-gap);
}

.document-section h2 {
    margin: 0;
    color: var(--text-main);
    font-size: 20px;
    font-weight: 600;
    line-height: 1.4;
}

.document-section p,
.document-section li {
    color: var(--text-sub);
    font-size: 16px;
    font-weight: 400;
    line-height: 1.75;
}

.document-section p {
    margin-top: 0.85rem;
}

.document-section p + p {
    margin-top: 0.7rem;
}

.document-section code {
    border-radius: 5px;
    background: var(--surface-muted);
    color: var(--text-main);
    padding: 0.08rem 0.28rem;
}

.document-tabs {
    display: flex;
    gap: 0.35rem;
    margin-bottom: var(--document-section-gap);
    padding: 0.35rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface-muted);
    overflow-x: auto;
}

.document-tab {
    min-height: 36px;
    border: 1px solid transparent;
    border-radius: 6px;
    background: transparent;
    color: var(--text-sub);
    cursor: pointer;
    font-size: 0.92rem;
    font-weight: 600;
    padding: 0.42rem 0.8rem;
    white-space: nowrap;
}

.document-tab.active {
    border-color: var(--border);
    background: var(--surface);
    color: var(--primary);
}

.document-panel {
    display: block;
}

.document-panel[hidden] {
    display: none;
}

.primary-link {
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
}

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

.guide-faq-list {
    display: grid;
    gap: .65rem;
    margin-top: 1rem;
}

.guide-faq-list details {
    padding: .9rem 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface-muted);
}

.guide-faq-list summary {
    color: var(--text-main);
    cursor: pointer;
    font-size: .95rem;
    font-weight: 700;
    line-height: 1.5;
}

.document-section .guide-faq-list p {
    margin-top: .65rem;
    font-size: .93rem;
}

@media (max-width: 768px) {
    .document-page {
        --document-page-padding: 1rem;
        padding-inline: 1rem;
        padding-block-end: 1.8rem;
    }

    .document-header,
    .document-content {
        padding-left: 1.25rem;
        padding-right: 1.25rem;
    }

    .document-header {
        padding-top: 1.5rem;
        padding-bottom: 1.35rem;
    }

    .document-content {
        padding-top: 1.7rem;
        padding-bottom: 1.8rem;
    }

    .document-title {
        font-size: 28px;
    }

    .document-toc {
        padding: 1.5rem 1.25rem 0;
    }

    .document-summary {
        grid-template-columns: 1fr;
        padding: 1.5rem 1.25rem 0;
    }

    .document-toc ol {
        grid-template-columns: 1fr;
    }

    .document-tabs {
        scrollbar-width: thin;
    }

    .document-tab {
        flex: 1 0 auto;
    }
}