/* ==========================================================================
   Business Process Automation — immersive service experience
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

.business-automation-page {
    --bpa-bg: #060a0f;
    --bpa-surface: #0c1218;
    --bpa-surface-2: #111a22;
    --bpa-border: rgba(255, 255, 255, 0.08);
    --bpa-text: #f4f5f7;
    --bpa-muted: #8fa3b5;
    --bpa-accent: #14b8a6;
    --bpa-accent-bright: #5eead4;
    --bpa-amber: #f59e0b;
    --bpa-glow: rgba(20, 184, 166, 0.4);
    --bpa-font-display: 'Plus Jakarta Sans', 'Outfit', sans-serif;
    --bpa-font-mono: 'JetBrains Mono', monospace;
    --bpa-lab-bg: #0e141c;
    --bpa-lab-dot: rgba(255, 255, 255, 0.05);
    --bpa-lab-ink: #e8ebf2;
    --bpa-lab-chrome: #080c12;
    --bpa-lab-trigger: rgba(245, 158, 11, 0.2);
    --bpa-lab-trigger-border: rgba(245, 158, 11, 0.5);
    --bpa-lab-trigger-text: #fcd34d;
    /* legacy aliases from shared template */
    --bpa-crimson: var(--bpa-accent);
    --bpa-coral: var(--bpa-accent-bright);
}

/* Header on dark hero */
.business-automation-page .header:not(.scrolled) {
    background: transparent;
}

.business-automation-page .header:not(.scrolled) .logo-wrapper,
.business-automation-page .header:not(.scrolled) .nav-link,
.business-automation-page .header:not(.scrolled) .menu-toggle span {
    color: var(--bpa-text);
}

.business-automation-page .header:not(.scrolled) #header-cta {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--bpa-border);
    color: var(--bpa-text);
}

.business-automation-page .footer {
    position: relative;
    z-index: 2;
}

.bpa-main {
    background: var(--bpa-bg);
    color: var(--bpa-text);
    overflow-x: hidden;
}

/* --- Hero --- */
.bpa-hero {
    position: relative;
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    padding: calc(var(--hero-top-offset, 5.5rem) + 2rem) 0 4rem;
    contain: layout style paint;
}

.bpa-hero-bg {
    position: absolute;
    inset: 0;
    background:
        url('../bpa-hero-accent.webp') center 35% / cover no-repeat,
        radial-gradient(ellipse 90% 70% at 70% 30%, rgba(20, 184, 166, 0.12), transparent 55%),
        var(--bpa-bg);
    opacity: 0.55;
    pointer-events: none;
}

.bpa-hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(20, 184, 166, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(20, 184, 166, 0.05) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, black 20%, transparent 75%);
    pointer-events: none;
}

.bpa-hero-inner {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(340px, 1.05fr);
    gap: 2.5rem;
    align-items: center;
}

.bpa-back-link {
    grid-column: 1 / -1;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--bpa-font-mono);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--bpa-muted);
    margin-bottom: 0.5rem;
    transition: color 0.2s ease;
}

.bpa-back-link:hover {
    color: var(--bpa-coral);
}

.bpa-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--bpa-font-mono);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--bpa-coral);
    margin-bottom: 1.25rem;
}

.bpa-eyebrow-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--bpa-crimson);
    box-shadow: 0 0 12px var(--bpa-glow);
    animation: bpaPulse 2s ease-in-out infinite;
}

@keyframes bpaPulse {
    50% { opacity: 0.4; transform: scale(0.85); }
}

.bpa-hero-title {
    font-family: var(--bpa-font-display);
    font-size: clamp(2.35rem, 5.5vw, 3.75rem);
    font-weight: 700;
    line-height: 1.08;
    letter-spacing: -0.025em;
    margin-bottom: 1.25rem;
}

.bpa-hero-title em {
    font-style: normal;
    background: linear-gradient(120deg, var(--bpa-coral), var(--bpa-crimson));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.bpa-hero-lead {
    font-size: clamp(1rem, 1.2vw, 1.15rem);
    color: var(--bpa-muted);
    line-height: 1.65;
    max-width: 520px;
    margin-bottom: 2rem;
}

.bpa-hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 2.5rem;
}

.bpa-btn-ghost {
    background: rgba(255, 255, 255, 0.06) !important;
    border-color: var(--bpa-border) !important;
    color: var(--bpa-text) !important;
}

.bpa-btn-glow {
    box-shadow: 0 8px 32px var(--bpa-glow);
}

.bpa-hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    max-width: 420px;
}

.bpa-hero-stats dt {
    font-family: var(--bpa-font-mono);
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--bpa-muted);
    margin-bottom: 0.25rem;
}

.bpa-hero-stats dd {
    font-family: var(--bpa-font-display);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--bpa-text);
}

.bpa-stat-note {
    display: block;
    font-size: 0.7rem;
    color: var(--bpa-muted);
    margin-top: 0.15rem;
}

/* --- Interactive stack lab (hero) --- */
.bpa-hero-lab-wrap {
    width: 100%;
    min-width: 0;
}

.bpa-lab {
    background: linear-gradient(165deg, rgba(22, 25, 34, 0.95) 0%, var(--bpa-lab-bg) 100%);
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow:
        0 0 0 1px rgba(215, 38, 56, 0.12),
        0 28px 80px rgba(0, 0, 0, 0.55),
        inset 0 1px 0 rgba(255, 255, 255, 0.06);
    overflow: hidden;
    color: var(--bpa-lab-ink);
}

.bpa-lab-chrome {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.75rem 1.1rem;
    background: var(--bpa-lab-chrome);
    border-bottom: 1px solid var(--bpa-border);
    font-family: var(--bpa-font-mono);
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--bpa-muted);
}

.bpa-lab-chrome-label {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
}

.bpa-lab-reset {
    border: 1px solid var(--bpa-border);
    background: rgba(255, 255, 255, 0.04);
    color: var(--bpa-lab-ink);
    font-family: var(--bpa-font-mono);
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 0.4rem 0.75rem;
    border-radius: 8px;
    cursor: pointer;
    transition: border-color 0.15s, color 0.15s;
}

.bpa-lab-reset:hover {
    border-color: var(--bpa-crimson);
    color: var(--bpa-crimson);
}

.bpa-lab-stage {
    position: relative;
    min-height: clamp(420px, 52vh, 560px);
    background-color: var(--bpa-lab-bg);
    background-image: radial-gradient(circle, var(--bpa-lab-dot) 1.25px, transparent 1.25px);
    background-size: 22px 22px;
    touch-action: none;
    user-select: none;
}

.bpa-lab-svg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: visible;
}

.bpa-lab-line {
    fill: none;
    stroke: rgba(255, 255, 255, 0.22);
    stroke-width: 2;
    stroke-dasharray: 7 6;
    stroke-linecap: round;
    opacity: 0.7;
    transition: opacity 0.2s, stroke 0.2s;
}

.bpa-lab-line.is-active {
    stroke: var(--bpa-crimson);
    opacity: 0.95;
    stroke-width: 2.5;
    filter: drop-shadow(0 0 6px rgba(215, 38, 56, 0.35));
}

.bpa-lab-node {
    position: absolute;
    left: calc(var(--nx, 50) * 1%);
    top: calc(var(--ny, 50) * 1%);
    transform: translate(-50%, -50%);
    cursor: grab;
    z-index: 2;
    transition: box-shadow 0.2s ease;
    font-family: var(--bpa-font-mono);
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.bpa-lab-node:active,
.bpa-lab-node.is-dragging {
    cursor: grabbing;
    z-index: 10;
}

.bpa-lab-node.is-focused {
    box-shadow: 0 0 0 3px rgba(215, 38, 56, 0.35);
}

.bpa-lab-node--trigger {
    width: 56px;
    min-height: 128px;
    padding: 1.1rem 0.55rem;
    border-radius: 999px;
    background: var(--bpa-lab-trigger);
    border: 2px solid var(--bpa-lab-trigger-border);
    color: var(--bpa-lab-trigger-text);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    writing-mode: vertical-lr;
    text-orientation: mixed;
    letter-spacing: 0.14em;
}

.bpa-lab-node--core {
    width: 148px;
    height: 148px;
    border-radius: 50%;
    background: radial-gradient(circle at 35% 30%, #3a3f4d, #0a0c10 70%);
    border: 3px solid #1a1d26;
    box-shadow:
        inset 0 0 0 6px rgba(20, 184, 166, 0.35),
        0 16px 40px rgba(0, 0, 0, 0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 0.78rem;
    line-height: 1.25;
    text-align: center;
}

.bpa-lab-core-ring {
    position: absolute;
    inset: 14px;
    border-radius: 50%;
    border: 2px dashed rgba(255, 255, 255, 0.35);
    pointer-events: none;
}

.bpa-lab-core-label {
    position: relative;
    z-index: 1;
}

.bpa-lab-node--out {
    min-width: 108px;
    padding: 0.7rem 1.35rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.06);
    border: 2px solid rgba(255, 255, 255, 0.18);
    color: var(--bpa-lab-ink);
    font-size: 0.8rem;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
}

.bpa-lab-status {
    margin: 0;
    padding: 0.85rem 1.1rem 1rem;
    font-family: var(--bpa-font-mono);
    font-size: 0.72rem;
    color: var(--bpa-muted);
    background: var(--bpa-lab-chrome);
    border-top: 1px solid var(--bpa-border);
}

.bpa-lab-status strong {
    color: var(--bpa-crimson);
    font-weight: 600;
}

/* --- Sections --- */
.bpa-section {
    padding: 5rem 0;
    position: relative;
}

.bpa-section-head {
    margin-bottom: 3rem;
    max-width: 640px;
}

.bpa-section-head--light .bpa-section-title {
    color: var(--bpa-text);
}

.bpa-section-tag {
    font-family: var(--bpa-font-mono);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--bpa-coral);
    display: block;
    margin-bottom: 0.75rem;
}

.bpa-section-title {
    font-family: var(--bpa-font-display);
    font-size: clamp(1.85rem, 4vw, 2.75rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 0.75rem;
}

.bpa-section-title--center {
    text-align: center;
    margin-bottom: 2.5rem;
}

.bpa-section-desc {
    color: var(--bpa-muted);
    font-size: 1.05rem;
    line-height: 1.6;
}

/* --- Pipeline simulator --- */
.bpa-pipeline-section {
    background: linear-gradient(180deg, var(--bpa-bg) 0%, var(--bpa-surface) 100%);
}

.bpa-pipeline-sim {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    background: var(--bpa-surface-2);
    border: 1px solid var(--bpa-border);
    border-radius: 28px;
    padding: 2rem;
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
}

.bpa-pipeline-track-wrap {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.bpa-pipeline-track {
    position: relative;
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 0.5rem;
    align-items: start;
    padding-top: 1.5rem;
}

.bpa-pipeline-line {
    position: absolute;
    left: 8%;
    right: 8%;
    top: 2.1rem;
    height: 3px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 4px;
    overflow: hidden;
    z-index: 0;
}

.bpa-pipeline-fill {
    display: block;
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--bpa-accent), var(--bpa-accent-bright));
    border-radius: 4px;
    transition: width 0.85s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 0 12px var(--bpa-glow);
}

.bpa-pipeline-packet {
    position: absolute;
    top: 2.1rem;
    left: 8%;
    width: 12px;
    height: 12px;
    margin-top: -4.5px;
    margin-left: -6px;
    border-radius: 50%;
    background: var(--bpa-accent-bright);
    box-shadow: 0 0 14px var(--bpa-glow);
    z-index: 2;
    transition: left 0.85s cubic-bezier(0.16, 1, 0.3, 1);
    pointer-events: none;
}

.bpa-pipeline-step {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.45rem;
    padding: 0;
    border: none;
    background: none;
    cursor: pointer;
    color: var(--bpa-muted);
    font-family: var(--bpa-font-mono);
    font-size: 0.62rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    transition: color 0.2s;
}

.bpa-pipeline-step i {
    width: 52px;
    height: 52px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    background: var(--bpa-surface);
    border: 1px solid var(--bpa-border);
    transition: border-color 0.2s, box-shadow 0.2s, color 0.2s, background 0.2s;
}

.bpa-pipeline-step:hover i,
.bpa-pipeline-step.is-active i {
    color: var(--bpa-accent-bright);
    border-color: rgba(20, 184, 166, 0.55);
    background: rgba(20, 184, 166, 0.12);
    box-shadow: 0 0 22px var(--bpa-glow);
}

.bpa-pipeline-step.is-active {
    color: var(--bpa-accent-bright);
}

.bpa-pipeline-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    justify-content: center;
}

.bpa-pipeline-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.55rem 1rem;
    border-radius: 10px;
    border: 1px solid var(--bpa-border);
    background: var(--bpa-surface);
    color: var(--bpa-text);
    font-family: var(--bpa-font-mono);
    font-size: 0.72rem;
    cursor: pointer;
}

.bpa-pipeline-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.bpa-pipeline-btn--primary {
    background: var(--bpa-accent);
    border-color: var(--bpa-accent);
    color: #042f2e;
    font-weight: 600;
}

.bpa-pipeline-panel {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 1rem;
}

.bpa-pipeline-console-wrap {
    background: #050a0c;
    border: 1px solid var(--bpa-border);
    border-radius: 16px;
    overflow: hidden;
}

.bpa-pipeline-console-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.55rem 0.9rem;
    font-family: var(--bpa-font-mono);
    font-size: 0.68rem;
    color: var(--bpa-muted);
    border-bottom: 1px solid var(--bpa-border);
}

.bpa-pipeline-live {
    color: var(--bpa-accent-bright);
    text-transform: uppercase;
}

.bpa-pipeline-live.is-running {
    animation: bpa-pulse 1.2s ease infinite;
}

@keyframes bpa-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.45; }
}

.bpa-pipeline-console {
    min-height: 130px;
    max-height: 170px;
    overflow-y: auto;
    padding: 0.75rem 0.9rem;
    font-family: var(--bpa-font-mono);
    font-size: 0.72rem;
    line-height: 1.65;
    color: #6ee7b7;
}

.bpa-console-line {
    opacity: 0;
    animation: bpa-log-in 0.35s ease forwards;
}

.bpa-console-line .time {
    color: #5c6478;
    margin-right: 0.5rem;
}

@keyframes bpa-log-in {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

.bpa-pipeline-detail {
    padding: 1.5rem 1.75rem;
    background: var(--bpa-surface);
    border-radius: 20px;
    border: 1px solid var(--bpa-border);
    transition: opacity 0.3s ease;
}

.bpa-pipeline-detail.is-fading {
    opacity: 0.4;
}

.bpa-detail-step {
    font-family: var(--bpa-font-mono);
    font-size: 0.7rem;
    color: var(--bpa-accent-bright);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.bpa-detail-title {
    font-family: var(--bpa-font-display);
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0.5rem 0 0.75rem;
}

.bpa-detail-body {
    color: var(--bpa-muted);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.bpa-detail-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.bpa-detail-list li {
    font-size: 0.9rem;
    color: var(--bpa-text);
    padding-left: 1.25rem;
    position: relative;
}

.bpa-detail-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--bpa-accent);
    font-family: var(--bpa-font-mono);
}

/* --- Signal stream --- */
.bpa-roi-section {
    padding-top: 2rem;
    overflow: hidden;
}

.bpa-roi-board {
    position: relative;
    background: var(--bpa-surface-2);
    border: 1px solid var(--bpa-border);
    border-radius: 20px;
    padding: 1.25rem 0;
    overflow: hidden;
}

.bpa-roi-stream {
    display: flex;
    gap: 0.75rem;
    width: max-content;
    animation: bpa-roi-scroll 45s linear infinite;
}

.bpa-roi-stream:hover {
    animation-play-state: paused;
}

@keyframes bpa-roi-scroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.bpa-roi-chip {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 999px;
    background: var(--bpa-surface);
    border: 1px solid var(--bpa-border);
    font-family: var(--bpa-font-mono);
    font-size: 0.72rem;
    color: var(--bpa-muted);
    white-space: nowrap;
}

.bpa-roi-chip strong {
    color: var(--bpa-coral);
    font-weight: 600;
}

.bpa-roi-fade {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 80px;
    pointer-events: none;
    z-index: 2;
}

.bpa-roi-fade--left {
    left: 0;
    background: linear-gradient(90deg, var(--bpa-surface-2), transparent);
}

.bpa-roi-fade--right {
    right: 0;
    background: linear-gradient(270deg, var(--bpa-surface-2), transparent);
}

/* --- Tool stack --- */
.bpa-tools-section {
    background: var(--bpa-surface);
}

.bpa-tools-sim {
    background: var(--bpa-surface-2);
    border: 1px solid var(--bpa-border);
    border-radius: 24px;
    padding: 1.75rem;
}

.bpa-tools-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.bpa-tools-tab {
    padding: 0.55rem 1rem;
    border-radius: 999px;
    border: 1px solid var(--bpa-border);
    background: transparent;
    color: var(--bpa-muted);
    font-family: var(--bpa-font-mono);
    font-size: 0.72rem;
    cursor: pointer;
    transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.bpa-tools-tab.is-active,
.bpa-tools-tab:hover {
    border-color: var(--bpa-accent);
    color: var(--bpa-text);
    background: rgba(20, 184, 166, 0.12);
}

.bpa-tools-panel {
    display: grid;
    grid-template-columns: minmax(200px, 280px) minmax(0, 1fr);
    gap: 2rem;
    align-items: center;
}

.bpa-tools-visual {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 1.25rem;
    background: var(--bpa-surface);
    border-radius: 16px;
    border: 1px solid var(--bpa-border);
    min-height: 200px;
    justify-content: center;
}

.bpa-tools-node {
    padding: 0.55rem 0.85rem;
    border-radius: 10px;
    border: 1px dashed var(--bpa-border);
    font-family: var(--bpa-font-mono);
    font-size: 0.68rem;
    color: var(--bpa-muted);
    text-align: center;
    opacity: 0.5;
    transition: opacity 0.25s, border-color 0.25s, color 0.25s;
}

.bpa-tools-node.is-active {
    opacity: 1;
    border-color: var(--bpa-accent);
    color: var(--bpa-accent-bright);
    border-style: solid;
    box-shadow: 0 0 16px var(--bpa-glow);
}

.bpa-tools-copy h3 {
    font-family: var(--bpa-font-display);
    font-size: 1.35rem;
    margin-bottom: 0.75rem;
}

.bpa-tools-copy p {
    color: var(--bpa-muted);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.bpa-tools-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
}

.bpa-tools-list li {
    font-size: 0.9rem;
    padding-left: 1.1rem;
    position: relative;
    color: var(--bpa-text);
}

.bpa-tools-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--bpa-accent);
    font-size: 0.75rem;
}

/* --- Layers --- */
.bpa-pillars-section {
    background: var(--bpa-surface);
}

.bpa-pillars {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
    perspective: 800px;
}

.bpa-pillar-card {
    background: var(--bpa-surface-2);
    border: 1px solid var(--bpa-border);
    border-radius: 20px;
    padding: 1.75rem;
    transform: rotateX(8deg) translateZ(0);
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.2s;
}

.bpa-pillar-card:hover {
    transform: rotateX(0deg) translateY(-8px);
    border-color: rgba(215, 38, 56, 0.35);
}

.bpa-pillar-card.is-featured {
    border-color: var(--bpa-crimson);
    background: linear-gradient(160deg, rgba(215, 38, 56, 0.15), var(--bpa-surface-2));
    transform: rotateX(0deg) scale(1.04);
    z-index: 1;
}

.bpa-pillar-index {
    font-family: var(--bpa-font-mono);
    font-size: 0.65rem;
    color: var(--bpa-coral);
    letter-spacing: 0.12em;
}

.bpa-pillar-card h3 {
    font-family: var(--bpa-font-display);
    font-size: 1.35rem;
    font-weight: 700;
    margin: 0.5rem 0 0.65rem;
}

.bpa-pillar-card p {
    font-size: 0.88rem;
    color: var(--bpa-muted);
    line-height: 1.55;
    margin-bottom: 1.25rem;
}

.bpa-pillar-bar {
    height: 4px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 4px;
    overflow: hidden;
}

.bpa-pillar-bar span {
    display: block;
    height: 100%;
    background: linear-gradient(90deg, var(--bpa-crimson), var(--bpa-coral));
    border-radius: 4px;
    transition: width 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

/* --- Use cases --- */
.bpa-playbooks-section {
    background: var(--bpa-bg);
}

.bpa-playbook-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.bpa-playbook-tab {
    padding: 0.6rem 1.2rem;
    border-radius: 50px;
    border: 1px solid var(--bpa-border);
    background: transparent;
    color: var(--bpa-muted);
    font-family: var(--bpa-font-display);
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.bpa-playbook-tab.is-active,
.bpa-playbook-tab:hover {
    border-color: var(--bpa-accent);
    color: var(--bpa-text);
    background: rgba(20, 184, 166, 0.12);
}

.bpa-playbook-panel {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: center;
    background: var(--bpa-surface-2);
    border: 1px solid var(--bpa-border);
    border-radius: 24px;
    padding: 2rem;
    min-height: 280px;
}

.bpa-playbook-graph {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.35rem 0.25rem;
    padding: 1.25rem 1rem;
    min-height: 200px;
    background: var(--bpa-surface);
    border: 1px solid var(--bpa-border);
    border-radius: 16px;
    position: relative;
    overflow: hidden;
}

.bpa-playbook-graph::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle, rgba(20, 184, 166, 0.08) 1px, transparent 1px);
    background-size: 20px 20px;
    pointer-events: none;
    opacity: 0.6;
}

.bpa-mini-node {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    padding: 0.75rem 0.65rem;
    min-width: 72px;
    max-width: 88px;
    background: var(--bpa-surface-2);
    border: 1px solid var(--bpa-border);
    border-radius: 14px;
    font-family: var(--bpa-font-mono);
    font-size: 0.58rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    text-align: center;
    color: var(--bpa-muted);
    opacity: 0;
    transform: translateY(8px);
    animation: bpaNodeIn 0.45s ease forwards;
}

.bpa-mini-node.is-active {
    border-color: var(--bpa-accent);
    color: var(--bpa-accent-bright);
    box-shadow: 0 0 20px var(--bpa-glow);
}

.bpa-mini-node i {
    color: var(--bpa-accent);
    font-size: 1.15rem;
    width: auto;
}

.bpa-mini-node span {
    line-height: 1.2;
}

.bpa-mini-connector {
    position: relative;
    z-index: 1;
    flex-shrink: 0;
    width: 20px;
    height: 2px;
    background: linear-gradient(90deg, var(--bpa-accent), var(--bpa-accent-bright));
    opacity: 0;
    animation: bpaNodeIn 0.35s ease forwards;
}

.bpa-mini-connector::after {
    content: '';
    position: absolute;
    right: -1px;
    top: 50%;
    margin-top: -3px;
    border: 4px solid transparent;
    border-left-color: var(--bpa-accent-bright);
}

.bpa-playbook-graph-packet {
    position: absolute;
    z-index: 2;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--bpa-accent-bright);
    box-shadow: 0 0 12px var(--bpa-glow);
    opacity: 0;
    pointer-events: none;
    transition: left 0.55s cubic-bezier(0.16, 1, 0.3, 1), top 0.55s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.2s;
}

.bpa-playbook-graph-packet.is-visible {
    opacity: 1;
}

@keyframes bpaNodeIn {
    to { opacity: 1; transform: translateY(0); }
}

.bpa-playbook-copy h3 {
    font-family: var(--bpa-font-display);
    font-size: 1.45rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.bpa-playbook-copy p {
    color: var(--bpa-muted);
    line-height: 1.6;
    margin-bottom: 1.25rem;
}

.bpa-playbook-metrics {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.bpa-playbook-metrics span {
    font-size: 0.8rem;
    color: var(--bpa-muted);
    padding: 0.5rem 0.85rem;
    background: var(--bpa-surface);
    border-radius: 10px;
    border: 1px solid var(--bpa-border);
}

.bpa-playbook-metrics strong {
    color: var(--bpa-coral);
    font-family: var(--bpa-font-display);
}

/* --- Compare --- */
.bpa-compare-section {
    background: var(--bpa-surface);
}

.bpa-compare-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 2rem;
}

.bpa-compare-toggle {
    display: flex;
    padding: 4px;
    background: var(--bpa-surface-2);
    border-radius: 50px;
    border: 1px solid var(--bpa-border);
}

.bpa-compare-btn {
    padding: 0.55rem 1.35rem;
    border: none;
    border-radius: 50px;
    background: transparent;
    color: var(--bpa-muted);
    font-family: var(--bpa-font-display);
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.bpa-compare-btn.is-active {
    background: var(--bpa-crimson);
    color: #fff;
}

.bpa-compare-board {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    transition: opacity 0.3s ease;
}

.bpa-compare-col {
    padding: 2rem;
    border-radius: 20px;
    border: 1px solid var(--bpa-border);
    transition: opacity 0.35s ease, transform 0.35s ease;
}

.bpa-compare-col h3 {
    font-family: var(--bpa-font-display);
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.bpa-compare-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

.bpa-compare-col li {
    font-size: 0.95rem;
    color: var(--bpa-muted);
    padding-left: 1.25rem;
    position: relative;
}

.bpa-compare-col li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--bpa-coral);
}

.bpa-compare-col--manual {
    background: rgba(255, 255, 255, 0.02);
}

.bpa-compare-col--auto {
    background: linear-gradient(145deg, rgba(20, 184, 166, 0.12), var(--bpa-surface-2));
    border-color: rgba(20, 184, 166, 0.35);
}

.bpa-compare-board.is-manual .bpa-compare-col--auto {
    opacity: 0.35;
    transform: scale(0.98);
}

.bpa-compare-board.is-auto .bpa-compare-col--manual {
    opacity: 0.35;
    transform: scale(0.98);
}

/* --- Guardrails --- */
.bpa-reliability-section {
    background: var(--bpa-bg);
}

.bpa-reliability-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

.bpa-reliability-card {
    padding: 1.5rem;
    background: var(--bpa-surface-2);
    border: 1px solid var(--bpa-border);
    border-radius: 18px;
    transition: border-color 0.2s, transform 0.2s;
}

.bpa-reliability-card:hover {
    border-color: rgba(215, 38, 56, 0.4);
    transform: translateY(-4px);
}

.bpa-reliability-card i {
    font-size: 1.35rem;
    color: var(--bpa-coral);
    margin-bottom: 0.75rem;
}

.bpa-reliability-card h3 {
    font-family: var(--bpa-font-display);
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.35rem;
}

.bpa-reliability-card p {
    font-size: 0.82rem;
    color: var(--bpa-muted);
    line-height: 1.5;
}

/* --- CTA --- */
.bpa-cta-strip {
    padding: 4rem 0 6rem;
    background: linear-gradient(135deg, #1a0508 0%, var(--bpa-bg) 50%);
    border-top: 1px solid var(--bpa-border);
}

.bpa-cta-inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem 2rem;
    padding: 2rem 2.5rem;
    background: var(--bpa-surface-2);
    border: 1px solid rgba(215, 38, 56, 0.25);
    border-radius: 24px;
    box-sizing: border-box;
    width: 100%;
    overflow: hidden;
}

.bpa-cta-copy {
    flex: 1 1 260px;
    min-width: 0;
}

.bpa-cta-inner h2 {
    font-family: var(--bpa-font-display);
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 800;
    line-height: 1.15;
    margin: 0 0 0.5rem;
}

.bpa-cta-inner p {
    color: var(--bpa-muted);
    max-width: 400px;
    margin: 0;
    line-height: 1.55;
}

.bpa-cta-btn {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin: 0;
    max-width: 100%;
    box-sizing: border-box;
}

/* Reveal on scroll */
.bpa-reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.bpa-reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 991px) {
    .bpa-hero-inner {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .bpa-back-link {
        justify-content: center;
    }

    .bpa-hero-lead,
    .bpa-hero-stats {
        margin-left: auto;
        margin-right: auto;
    }

    .bpa-hero-cta {
        justify-content: center;
    }

    .bpa-hero-lab-wrap {
        max-width: 640px;
        margin: 0 auto;
    }

    .bpa-lab-stage {
        min-height: 460px;
    }

    .bpa-pillars {
        grid-template-columns: 1fr;
    }

    .bpa-pillar-card.is-featured {
        transform: none;
    }

    .bpa-playbook-panel {
        grid-template-columns: 1fr;
    }

    .bpa-playbook-graph {
        min-height: 160px;
    }

    .bpa-mini-node {
        min-width: 64px;
        max-width: 76px;
        font-size: 0.52rem;
    }

    .bpa-pipeline-panel {
        grid-template-columns: 1fr;
    }

    .bpa-tools-panel {
        grid-template-columns: 1fr;
    }

    .bpa-reliability-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .bpa-pipeline-sim {
        padding: 1.5rem;
    }

    .bpa-pipeline-track {
        grid-template-columns: repeat(3, 1fr);
        row-gap: 2rem;
    }

    .bpa-pipeline-line,
    .bpa-pipeline-packet {
        display: none;
    }

    .bpa-pipeline-panel {
        grid-template-columns: 1fr;
    }

    .bpa-tools-tabs {
        flex-direction: column;
    }

    .bpa-tools-tab {
        width: 100%;
        text-align: center;
    }

    .bpa-hero-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .bpa-compare-board {
        grid-template-columns: 1fr;
    }

    .bpa-reliability-grid {
        grid-template-columns: 1fr;
    }

    .bpa-cta-strip {
        padding-bottom: 7.5rem;
    }

    .bpa-cta-inner {
        flex-direction: column;
        align-items: stretch;
        text-align: center;
        padding: 1.75rem 1.5rem 2rem;
        gap: 1.25rem;
    }

    .bpa-cta-copy {
        flex: none;
        width: 100%;
    }

    .bpa-cta-inner p {
        max-width: none;
        margin-left: auto;
        margin-right: auto;
    }

    .bpa-cta-btn {
        width: 100%;
    }

    .bpa-lab-node--core {
        width: 120px;
        height: 120px;
        font-size: 0.7rem;
    }

    .bpa-lab-node--out {
        min-width: 92px;
        font-size: 0.72rem;
        padding: 0.6rem 1rem;
    }
}