.site-arch-section {
    padding: 1.5rem 0 3rem;
}

.page-hero-compact {
    padding: 2rem 0 1.25rem;
}

.page-hero-compact .hero-sub {
    max-width: 52rem;
}

.site-arch-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem 1.25rem;
    margin-bottom: 1.25rem;
    padding: 0.9rem 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.02);
}

.site-arch-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
}

.site-arch-stat {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 4.75rem;
    padding: 0.55rem 0.9rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--bg-card);
    text-align: center;
}

.site-arch-stat-value {
    display: block;
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--brand-blue-light);
    line-height: 1.1;
}

.site-arch-stat-label {
    display: block;
    margin-top: 0.2rem;
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-dim);
}

.site-arch-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-end;
    gap: 0.5rem;
}

.site-arch-zoom-group {
    display: inline-flex;
    align-items: stretch;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: var(--bg-card);
}

.site-arch-zoom-group .site-arch-zoom-btn {
    min-width: 2.75rem;
    min-height: 44px;
    padding: 0.5rem 0.75rem;
    border: none;
    border-radius: 0;
    border-right: 1px solid var(--border);
    background: transparent;
}

.site-arch-zoom-group .site-arch-zoom-btn:last-child {
    border-right: none;
}

.site-arch-zoom-group .site-arch-zoom-btn:hover {
    background: rgba(0, 174, 239, 0.08);
}

.site-arch-canvas-wrap {
    position: relative;
    width: 100%;
    min-height: 640px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius);
    background: #f8fafc;
    overflow: auto;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.site-arch-legend {
    position: absolute;
    top: 0.85rem;
    left: 0.85rem;
    z-index: 5;
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem 0.85rem;
    margin: 0;
    padding: 0.55rem 0.75rem;
    list-style: none;
    border-radius: 999px;
    border: 1px solid #e2e8f0;
    background: rgba(255, 255, 255, 0.94);
    box-shadow: 0 4px 14px rgba(15, 23, 42, 0.08);
    font-size: 0.72rem;
    font-weight: 700;
    color: #334155;
    pointer-events: none;
}

.site-arch-legend li {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    white-space: nowrap;
}

.site-arch-legend-dot {
    width: 0.65rem;
    height: 0.65rem;
    border-radius: 50%;
    background: var(--legend-color, #65a30d);
    border: 1.5px solid #fff;
    box-shadow: 0 0 0 1px rgba(15, 23, 42, 0.08);
}

.site-arch-svg {
    display: block;
    width: 100%;
    min-height: 640px;
    background: #f8fafc;
    user-select: none;
    cursor: grab;
    touch-action: pan-y pinch-zoom;
}

.site-arch-svg.is-panning {
    cursor: grabbing;
}

.site-arch-node {
    cursor: default;
}

.site-arch-node.is-linkable {
    cursor: pointer;
}

.site-arch-hit,
.site-arch-label-hit {
    pointer-events: all;
}

.site-arch-canvas-wrap .site-arch-svg {
    max-width: none;
}

.site-arch-svg text,
.site-arch-svg .site-arch-label {
    font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.01em;
    pointer-events: none;
}

.site-arch-svg .site-arch-label-fill {
    fill: #0f172a;
}

.site-arch-svg .site-arch-label-halo {
    fill: #ffffff;
    stroke: #ffffff;
}

.site-arch-node.is-active .site-arch-dot,
.site-arch-node:hover .site-arch-dot {
    stroke: #16a34a;
    stroke-width: 2.8;
    filter: drop-shadow(0 0 0.35rem rgba(22, 163, 74, 0.45));
}

.site-arch-node.is-active .site-arch-label-fill,
.site-arch-node:hover .site-arch-label-fill {
    fill: #15803d;
    font-weight: 700;
}

.site-arch-tooltip {
    position: absolute;
    z-index: 30;
    min-width: min(280px, calc(100vw - 1.5rem));
    max-width: min(360px, calc(100vw - 1.5rem));
    padding: 0.75rem 0.85rem;
    border-radius: 8px;
    background: #fff;
    border: 1px solid #e2e8f0;
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.15);
    pointer-events: none;
    font-size: 0.78rem;
    line-height: 1.45;
    box-sizing: border-box;
}

.site-arch-tip-row {
    display: grid;
    grid-template-columns: 7.5rem 1fr;
    gap: 0.5rem;
    padding: 0.2rem 0;
    border-bottom: 1px solid #f1f5f9;
}

.site-arch-tip-row:last-child {
    border-bottom: none;
}

.site-arch-tip-key {
    color: #64748b;
    font-weight: 600;
}

.site-arch-tip-val {
    color: #0f172a;
    word-break: break-word;
}

.site-arch-tip-row:first-child .site-arch-tip-val {
    color: #16a34a;
    font-weight: 600;
}

.site-arch-hint {
    margin: 0.85rem 0 0;
    font-size: 0.82rem;
    color: var(--text-dim);
}

.site-arch-hint code {
    font-size: 0.78rem;
    padding: 0.1rem 0.35rem;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.06);
}

@media (max-width: 768px) {
    .site-arch-toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .site-arch-stats {
        justify-content: center;
    }

    .site-arch-stat {
        flex: 1 1 calc(50% - 0.65rem);
        min-width: 0;
    }

    .site-arch-actions {
        justify-content: center;
    }

    .site-arch-legend {
        position: static;
        margin: 0.75rem 0.75rem 0;
        border-radius: var(--radius-sm);
    }

    .site-arch-canvas-wrap {
        min-height: 480px;
    }
}

@media (max-width: 480px) {
    .site-arch-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .site-arch-actions .btn,
    .site-arch-zoom-group {
        width: 100%;
    }

    .site-arch-zoom-group .site-arch-zoom-btn {
        flex: 1;
    }

    .site-arch-tooltip {
        position: fixed;
        left: 0.75rem !important;
        right: 0.75rem;
        bottom: calc(0.75rem + env(safe-area-inset-bottom, 0px));
        top: auto !important;
        min-width: 0;
        max-width: none;
        width: auto;
    }

    .site-arch-tip-row {
        grid-template-columns: 1fr;
        gap: 0.15rem;
    }
}