.pipeline-demo {
    --pipeline-if-bg: rgba(29, 158, 117, 0.14);
    --pipeline-if-text: #0f5b47;
    --pipeline-if-border: #1d9e75;
    --pipeline-id-bg: rgba(83, 74, 183, 0.12);
    --pipeline-id-text: #4337a0;
    --pipeline-id-border: #534ab7;
    --pipeline-ex-bg: rgba(186, 117, 23, 0.16);
    --pipeline-ex-text: #7a4809;
    --pipeline-ex-border: #ba7517;
    --pipeline-mem-bg: rgba(55, 138, 221, 0.14);
    --pipeline-mem-text: #15558f;
    --pipeline-mem-border: #378add;
    --pipeline-wb-bg: rgba(99, 153, 34, 0.14);
    --pipeline-wb-text: #416f14;
    --pipeline-wb-border: #639922;
    margin: 2rem 0;
    padding: 1.5rem;
    border: var(--border-subtle);
    border-radius: var(--radius-lg);
    background:
        radial-gradient(circle at top right, var(--accent-soft), transparent 38%),
        linear-gradient(180deg, var(--surface) 0%, var(--surface-muted) 100%);
    box-shadow: var(--shadow-sm);
}

.pipeline-demo__title {
    font-family: var(--font-serif);
    font-size: clamp(1.35rem, 2vw, 1.7rem);
    line-height: 1.15;
    margin: 0 0 0.6rem;
    color: var(--text-primary);
}

.pipeline-demo__intro,
.pipeline-demo__detail p,
.pipeline-demo__note {
    color: var(--text-secondary);
}

.pipeline-demo__intro {
    margin-bottom: 1.25rem;
}

.pipeline-demo__section-label {
    margin: 1.2rem 0 0.7rem;
    color: var(--text-secondary);
    font-size: 0.74rem;
    font-weight: var(--font-weight-bold);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.pipeline-demo__pills,
.pipeline-demo__stats {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.pipeline-demo__pill,
.pipeline-demo__mode-button {
    appearance: none;
    border: var(--border-subtle);
    border-radius: var(--radius-pill);
    background: var(--surface);
    color: var(--text-secondary);
    cursor: pointer;
    font: inherit;
    transition: transform 120ms ease, border-color 120ms ease, background-color 120ms ease, color 120ms ease, box-shadow 120ms ease;
}

.pipeline-demo__pill {
    min-width: 3.75rem;
    padding: 0.65rem 1rem;
    font-size: 0.9rem;
    font-weight: var(--font-weight-semibold);
}

.pipeline-demo__pill:hover,
.pipeline-demo__mode-button:hover {
    transform: translateY(-1px);
    border-color: var(--accent);
}

.pipeline-demo__pill:focus-visible,
.pipeline-demo__mode-button:focus-visible {
    outline: 3px solid var(--focus-ring);
    outline-offset: 2px;
}

.pipeline-demo__pill[data-stage="if"].is-active {
    background: var(--pipeline-if-bg);
    border-color: var(--pipeline-if-border);
    color: var(--pipeline-if-text);
}

.pipeline-demo__pill[data-stage="id"].is-active {
    background: var(--pipeline-id-bg);
    border-color: var(--pipeline-id-border);
    color: var(--pipeline-id-text);
}

.pipeline-demo__pill[data-stage="ex"].is-active {
    background: var(--pipeline-ex-bg);
    border-color: var(--pipeline-ex-border);
    color: var(--pipeline-ex-text);
}

.pipeline-demo__pill[data-stage="mem"].is-active {
    background: var(--pipeline-mem-bg);
    border-color: var(--pipeline-mem-border);
    color: var(--pipeline-mem-text);
}

.pipeline-demo__pill[data-stage="wb"].is-active {
    background: var(--pipeline-wb-bg);
    border-color: var(--pipeline-wb-border);
    color: var(--pipeline-wb-text);
}

.pipeline-demo__detail {
    margin-top: 1rem;
    padding: 1.1rem 1.2rem;
    border: var(--border-subtle);
    border-left: 4px solid var(--border);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.34);
}

.pipeline-demo__detail-header {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 0.8rem;
    align-items: baseline;
    margin-bottom: 0.8rem;
}

.pipeline-demo__detail-abbr {
    font-size: 1.25rem;
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
}

.pipeline-demo__detail-name {
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

.pipeline-demo__detail-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.pipeline-demo__detail-copy {
    margin-bottom: 1rem;
}

.pipeline-demo__detail-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
}

.pipeline-demo__detail-box {
    padding: 0.85rem 0.95rem;
    border-radius: var(--radius-md);
    background: var(--surface-muted);
}

.pipeline-demo__detail-box-label {
    display: block;
    margin-bottom: 0.3rem;
    font-size: 0.72rem;
    font-weight: var(--font-weight-bold);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-secondary);
}

.pipeline-demo__mode-switch {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.pipeline-demo__mode-button {
    padding: 0.75rem 0.95rem;
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-semibold);
}

.pipeline-demo__mode-button.is-active {
    background: var(--surface-contrast);
    border-color: var(--surface-contrast);
    color: var(--text-on-contrast);
    box-shadow: var(--shadow-sm);
}

.pipeline-demo__stats {
    margin-bottom: 1rem;
}

.pipeline-demo__stat {
    flex: 1 1 180px;
    min-width: 0;
    padding: 0.95rem 1rem;
    border-radius: var(--radius-md);
    background: var(--surface-muted);
    border: var(--border-subtle);
}

.pipeline-demo__stat-value {
    display: block;
    color: var(--text-primary);
    font-size: 1.35rem;
    font-weight: var(--font-weight-bold);
    line-height: 1.1;
}

.pipeline-demo__stat-label {
    display: block;
    margin-top: 0.3rem;
    color: var(--text-secondary);
    font-size: 0.82rem;
}

.pipeline-demo__grid-wrap {
    overflow-x: auto;
}

.pipeline-demo__grid {
    display: grid;
    grid-template-columns: 52px repeat(var(--pipeline-columns), minmax(42px, 1fr));
    gap: 0.3rem;
    min-width: max-content;
}

.pipeline-demo__grid-head,
.pipeline-demo__grid-row-label {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 0.75rem;
}

.pipeline-demo__grid-row-label {
    justify-content: flex-start;
    font-weight: var(--font-weight-semibold);
}

.pipeline-demo__cell {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 2.2rem;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    font-size: 0.8rem;
    font-weight: var(--font-weight-semibold);
    transition: opacity 140ms ease, transform 140ms ease;
}

.pipeline-demo__cell--empty {
    background: var(--bg-secondary);
}

.pipeline-demo__cell--clickable {
    cursor: pointer;
}

.pipeline-demo__cell--clickable:hover {
    transform: translateY(-1px);
}

.pipeline-demo__cell.is-dim {
    opacity: 0.18;
}

.pipeline-demo__cell[data-stage="if"] {
    background: var(--pipeline-if-bg);
    color: var(--pipeline-if-text);
    border-color: rgba(29, 158, 117, 0.28);
}

.pipeline-demo__cell[data-stage="id"] {
    background: var(--pipeline-id-bg);
    color: var(--pipeline-id-text);
    border-color: rgba(83, 74, 183, 0.24);
}

.pipeline-demo__cell[data-stage="ex"] {
    background: var(--pipeline-ex-bg);
    color: var(--pipeline-ex-text);
    border-color: rgba(186, 117, 23, 0.24);
}

.pipeline-demo__cell[data-stage="mem"] {
    background: var(--pipeline-mem-bg);
    color: var(--pipeline-mem-text);
    border-color: rgba(55, 138, 221, 0.24);
}

.pipeline-demo__cell[data-stage="wb"] {
    background: var(--pipeline-wb-bg);
    color: var(--pipeline-wb-text);
    border-color: rgba(99, 153, 34, 0.24);
}

.pipeline-demo__note {
    margin-top: 0.85rem;
    font-size: 0.88rem;
    line-height: 1.7;
}

@media (max-width: 680px) {
    .pipeline-demo {
        padding: 1.1rem;
    }

    .pipeline-demo__detail-grid,
    .pipeline-demo__mode-switch {
        grid-template-columns: 1fr;
    }

    .pipeline-demo__grid {
        grid-template-columns: 44px repeat(var(--pipeline-columns), minmax(38px, 1fr));
    }
}