.schema-frigo-section { background: #f5f8f9; }
.schema-frigo-heading { max-width: 780px; margin: 0 0 28px; text-align: left; }
.schema-frigo { grid-template-columns: minmax(0, 1.15fr) minmax(300px, 1fr); gap: 28px; align-items: start; }
.schema-frigo-canvas { width: 100%; min-width: 0; min-height: 360px; aspect-ratio: 4 / 3; border: 0; border-radius: 0; background: #eaf2f5; box-shadow: none; }
.schema-frigo-canvas canvas { width: 100%; height: 100%; cursor: pointer; }
.schema-frigo-nodes { position: absolute; inset: 0; pointer-events: none; visibility: hidden; }
.schema-frigo--ready .schema-frigo-nodes { visibility: visible; }
.schema-frigo-node { position: absolute; transform: translate(-50%, -50%); font: 600 12px/1.3 Inter, Arial, sans-serif; color: #435f6c; white-space: nowrap; }
.schema-frigo-node.active { color: #006d88; font-weight: 800; }
.schema-frigo-panel { min-width: 0; gap: 10px; }
.schema-frigo-step { min-height: 104px; padding: 16px 18px; border-radius: 6px; box-shadow: none; font-family: inherit; letter-spacing: 0; }
.schema-frigo-step:hover, .schema-frigo-step:focus-visible, .schema-frigo-step.active { transform: none; border-color: #29879d; box-shadow: inset 3px 0 #29879d; }
.schema-frigo-step:focus-visible { outline: 2px solid #007c98; outline-offset: 3px; }
.schema-frigo-step strong { color: #214a5b; }
.schema-frigo-step span { color: #4c616b; font-size: .925rem; line-height: 1.6; }

.schema-frigo-preview[hidden], .schema-frigo-preview [hidden] { display: none !important; }
.schema-frigo-preview {
    position: fixed;
    z-index: 120;
    width: min(430px, calc(100vw - 24px));
    max-height: calc(100dvh - 24px);
    overflow-y: auto;
    overscroll-behavior: contain;
    border: 1px solid #b5cdd7;
    border-radius: 8px;
    background: #fff;
    color: #203f4c;
    box-shadow: 0 12px 36px #173e502b;
    font: 400 14px/1.55 Inter, Arial, sans-serif;
    letter-spacing: 0;
}
.schema-frigo-preview-header { position: sticky; top: 0; z-index: 1; display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 14px; border-bottom: 1px solid #dbe6eb; background: #fff; }
.schema-frigo-preview-header h3 { min-width: 0; margin: 0; font-size: 1.1rem; line-height: 1.4; overflow-wrap: anywhere; }
.schema-frigo-preview-tools { display: flex; flex: 0 0 auto; gap: 4px; }
.schema-frigo-preview-tools button { display: grid; place-items: center; width: 40px; height: 40px; padding: 0; border: 1px solid transparent; border-radius: 5px; background: #f1f6f8; color: #203f4c; cursor: pointer; }
.schema-frigo-preview-tools button:hover { background: #deedf2; }
.schema-frigo-preview-tools button:focus-visible { outline: 2px solid #007c98; outline-offset: 2px; }
.schema-frigo-preview-tools button:disabled { opacity: .4; cursor: default; }
.schema-frigo-preview-tools svg { display: block; width: 20px; height: 20px; flex: none; fill: none; stroke: currentColor; pointer-events: none; }
.schema-frigo-preview-stage { position: relative; aspect-ratio: 16 / 10; background: #eef4f6; overflow: hidden; }
.schema-frigo-preview-stage canvas, .schema-frigo-preview-fallback { position: absolute; inset: 0; display: block; width: 100%; height: 100%; }
.schema-frigo-preview-fallback { object-fit: contain; padding: 16px; }
.schema-frigo-preview-placeholder { position: absolute; inset: 0; display: grid; place-items: center; font-weight: 700; }
.schema-frigo-preview-process { margin: 0; padding: 10px 16px; border-bottom: 1px solid #dbe6eb; font-size: .82rem; font-weight: 600; color: #006d85; }
.schema-frigo-preview-copy { display: flex; gap: 12px; align-items: flex-start; padding: 16px 16px 8px; }
.schema-frigo-preview-copy p { min-width: 0; margin: 0; overflow-wrap: anywhere; }
.schema-frigo-preview-reference { flex: 0 0 64px; width: 64px; height: 64px; object-fit: contain; }
.schema-frigo-preview-note { margin: 0; padding: 0 16px 14px; font-size: .75rem; color: #64757d; }
.schema-frigo-preview.is-mobile { left: 12px; right: 12px; bottom: max(12px, env(safe-area-inset-bottom)); top: auto; width: auto; }
.schema-frigo-preview.is-mobile .schema-frigo-preview-tools button { width: 44px; height: 44px; }
@media (max-height: 500px) {
    .schema-frigo-preview-stage { height: 180px; aspect-ratio: auto; }
}
@media (max-width: 860px) {
    .schema-frigo { grid-template-columns: minmax(0, 1fr); gap: 20px; }
    .schema-frigo-canvas { min-height: 260px; max-height: 460px; }
}
@media (max-width: 520px) {
    .schema-frigo-step { padding: 14px; }
    .schema-frigo-node { font-size: 11px; }
    .schema-frigo-preview-reference { flex-basis: 48px; width: 48px; height: 48px; }
}
@media (prefers-reduced-motion: reduce) {
    .schema-frigo-step, .schema-frigo-fallback { transition: none; }
}