/* ===================================================================
   Page-specific styles for landing, demo, and analytics pages
   =================================================================== */

/* ========== LANDING ========== */
.hero {
    padding: var(--sp-20) 0 var(--sp-16);
    background:
        radial-gradient(circle at 88% 12%, rgba(0,181,160,0.10), transparent 55%),
        radial-gradient(circle at 6% 82%, rgba(14,77,166,0.10), transparent 50%),
        linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-soft) 100%);
}
.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    line-height: 1.05;
    letter-spacing: -0.02em;
    margin-bottom: var(--sp-5);
    max-width: 18ch;
}
.hero h1 .accent {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero .sub {
    font-size: var(--fs-lg);
    color: var(--color-text-muted);
    max-width: 60ch;
    margin-bottom: var(--sp-8);
    line-height: var(--lh-normal);
}
.hero .ctas { display: flex; gap: var(--sp-4); flex-wrap: wrap; }
.hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: var(--sp-12);
    align-items: center;
}
.hero-visual {
    background: var(--color-surface-dark);
    border-radius: var(--radius-lg);
    padding: var(--sp-8);
    color: var(--color-text-on-dark);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}
.hero-visual::before {
    content: '';
    position: absolute;
    top: -30%; right: -30%;
    width: 60%; height: 60%;
    background: radial-gradient(circle, rgba(0,181,160,0.25) 0%, transparent 70%);
}
.hero-visual h3 { color: #fff; margin-bottom: var(--sp-3); }
.hero-visual .stat-row {
    display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--sp-4);
    margin-top: var(--sp-6);
    position: relative;
}
.hero-visual .stat {
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius);
    padding: var(--sp-4);
}
.hero-visual .stat-label {
    font-size: var(--fs-xs);
    color: rgba(247,249,252,0.65);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}
.hero-visual .stat-value {
    font-size: var(--fs-2xl);
    font-weight: var(--fw-bold);
    color: var(--color-accent);
    margin-top: var(--sp-1);
}
@media (max-width: 920px) {
    .hero-grid { grid-template-columns: 1fr; }
}

.disclosure-banner {
    background: linear-gradient(135deg, rgba(0,181,160,0.06), rgba(14,77,166,0.06));
    border: 1px solid rgba(14,77,166,0.18);
    border-radius: var(--radius-md);
    padding: var(--sp-5) var(--sp-6);
    margin: var(--sp-8) 0;
    display: flex;
    align-items: flex-start;
    gap: var(--sp-4);
}
.disclosure-banner .dot {
    flex-shrink: 0;
    width: 10px; height: 10px;
    border-radius: 50%;
    background: var(--color-accent);
    margin-top: 8px;
    box-shadow: 0 0 0 6px rgba(0,181,160,0.18);
}
.disclosure-banner p {
    margin: 0;
    color: var(--color-text);
}

.challenge-card, .gain-card, .stack-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--sp-6);
    transition: all var(--t);
    position: relative;
    overflow: hidden;
}
.challenge-card:hover, .gain-card:hover, .stack-card:hover {
    border-color: var(--color-primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* Hover flap — reveals "How AI helps" when card is hovered/focused */
.hover-flap {
    position: absolute;
    inset: 0;
    background: var(--color-surface-dark);
    color: var(--color-text-on-dark);
    padding: var(--sp-5);
    display: flex;
    flex-direction: column;
    justify-content: center;
    opacity: 0;
    transform: translateY(8px);
    pointer-events: none;
    transition: opacity var(--t), transform var(--t);
    border-radius: var(--radius-md);
}
.challenge-card:hover .hover-flap,
.challenge-card:focus-within .hover-flap,
.gain-card:hover .hover-flap,
.gain-card:focus-within .hover-flap {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}
.hover-flap-label {
    font-size: var(--fs-xs);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    font-weight: var(--fw-semibold);
    margin-bottom: var(--sp-2);
}
.hover-flap-body {
    font-size: var(--fs-sm);
    color: rgba(247, 249, 252, 0.92);
    line-height: var(--lh-normal);
}
.challenge-card, .gain-card { cursor: pointer; outline: none; }

/* ----- Savings calculation accordion ----- */
.savings-calc summary {
    list-style: none;
    cursor: pointer;
    padding: var(--sp-5) var(--sp-6);
}
.savings-calc summary::-webkit-details-marker { display: none; }
.calc-toggle {
    margin-left: var(--sp-2);
    font-size: var(--fs-sm);
    color: var(--color-accent);
    font-weight: var(--fw-semibold);
}
.savings-calc[open] .calc-toggle { color: var(--color-text-soft); }
.savings-calc[open] .calc-toggle::before { content: '▴ Hide '; }
.calc-body {
    padding: var(--sp-5) var(--sp-6) var(--sp-6);
    border-top: 1px solid rgba(255,255,255,0.10);
}
.calc-disclaimer {
    background: rgba(245, 158, 11, 0.12);
    border: 1.5px solid rgba(245, 158, 11, 0.45);
    border-left-width: 4px;
    border-radius: var(--radius);
    padding: var(--sp-4) var(--sp-5);
    margin-bottom: var(--sp-5);
}
.calc-disclaimer-title {
    font-size: var(--fs-sm);
    font-weight: var(--fw-bold);
    color: #FCD34D;
    letter-spacing: 0.06em;
    margin-bottom: 6px;
}
.calc-disclaimer-body {
    font-size: var(--fs-sm);
    color: rgba(247, 249, 252, 0.88);
    line-height: var(--lh-normal);
}
.calc-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-5);
    margin-bottom: var(--sp-5);
}
@media (max-width: 800px) { .calc-grid { grid-template-columns: 1fr; } }
.calc-table {
    width: 100%;
    border-collapse: collapse;
    color: rgba(247,249,252,0.85);
    font-size: var(--fs-sm);
}
.calc-table td {
    padding: 6px 0;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}
.calc-table td:last-child { text-align: right; font-family: var(--font-mono); }
.calc-table tr.calc-total td {
    border-top: 2px solid rgba(255,255,255,0.30);
    border-bottom: none;
    padding-top: var(--sp-2);
    color: #fff;
    font-weight: var(--fw-semibold);
}
.calc-result {
    background: rgba(0, 181, 160, 0.10);
    border: 1px solid rgba(0, 181, 160, 0.30);
    border-radius: var(--radius);
    padding: var(--sp-4);
    color: rgba(247,249,252,0.92);
}
.big-money {
    color: var(--color-accent);
    font-weight: var(--fw-bold);
    font-size: var(--fs-lg);
    margin-left: var(--sp-1);
}
.calc-foot {
    margin-top: var(--sp-2);
    font-size: var(--fs-sm);
    color: rgba(247,249,252,0.70);
}
.calc-assumptions {
    margin-top: var(--sp-3);
    padding-top: var(--sp-3);
    border-top: 1px solid rgba(255,255,255,0.10);
    font-size: var(--fs-xs);
    color: rgba(247,249,252,0.65);
    line-height: var(--lh-normal);
}
.calc-assumptions code {
    background: rgba(255,255,255,0.10);
    padding: 1px 6px;
    border-radius: 3px;
    color: var(--color-accent);
    font-family: var(--font-mono);
}
.challenge-card .icon, .stack-card .icon {
    width: 40px; height: 40px;
    border-radius: var(--radius);
    background: rgba(14,77,166,0.10);
    color: var(--color-primary);
    display: flex; align-items: center; justify-content: center;
    font-weight: var(--fw-bold);
    margin-bottom: var(--sp-3);
    font-size: var(--fs-md);
}
.challenge-card h4, .gain-card h4, .stack-card h4 { margin-bottom: var(--sp-2); }
.challenge-card p, .gain-card p, .stack-card p { margin: 0; font-size: var(--fs-sm); }

.gain-card {
    text-align: left;
    background: linear-gradient(180deg, rgba(0,181,160,0.04), transparent);
    border-color: rgba(0,181,160,0.18);
}
.gain-card .pct {
    font-size: var(--fs-3xl);
    font-weight: var(--fw-heavy);
    color: var(--color-accent-dark);
    line-height: 1;
    margin-bottom: var(--sp-2);
    letter-spacing: -0.02em;
}
.gain-card .gain-label {
    font-weight: var(--fw-semibold);
    margin-bottom: var(--sp-2);
}

/* ----- Capability cards (replaces percentage display) ----- */
.capability-card {
    display: flex;
    flex-direction: column;
    min-height: 280px;
    padding: var(--sp-5) var(--sp-5) var(--sp-6);
}
.capability-card .capability-headline {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: var(--fw-semibold);
    color: var(--color-primary);
    line-height: 1.2;
    letter-spacing: -0.01em;
    margin-bottom: var(--sp-3);
    /* allow headlines to wrap to 2-3 lines without breaking layout */
    min-height: 4.5em;
    display: flex;
    align-items: flex-start;
}
.capability-card .capability-subhead {
    font-size: var(--fs-xs);
    font-weight: var(--fw-semibold);
    color: var(--color-accent-dark);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: var(--sp-3);
    padding-bottom: var(--sp-2);
    border-bottom: 1px solid rgba(0,181,160,0.20);
}
.capability-card p {
    font-size: var(--fs-sm);
    color: var(--color-text-muted);
    line-height: var(--lh-normal);
    margin: 0;
    flex: 1;
}

.gain-summary {
    margin-top: var(--sp-6);
    padding: var(--sp-5) var(--sp-6);
    background: var(--color-surface-dark);
    color: var(--color-text-on-dark);
    border-radius: var(--radius-md);
}
.gain-summary strong { color: var(--color-accent); }

.stack-card .icon {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: #fff;
}

.assumptions-panel {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 0;
    overflow: hidden;
    margin-bottom: var(--sp-6);
}
.assumptions-panel summary {
    list-style: none;
    cursor: pointer;
    padding: var(--sp-5) var(--sp-6);
    background: linear-gradient(135deg, rgba(14,77,166,0.04), rgba(0,181,160,0.04));
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--sp-4);
}
.assumptions-panel summary::-webkit-details-marker { display: none; }
.assumptions-panel summary h2 { margin: 0; }
.assumptions-panel summary p  { margin: 4px 0 0 0; font-size: var(--fs-sm); }
.assumptions-panel summary .toggle {
    width: 36px; height: 36px;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-weight: var(--fw-bold);
    flex-shrink: 0;
    transition: transform var(--t);
}
.assumptions-panel[open] summary .toggle { transform: rotate(45deg); }
.assumptions-content {
    padding: var(--sp-6);
    border-top: 1px solid var(--color-border);
}
.assumptions-content h3 {
    color: var(--color-primary);
    margin-top: var(--sp-8);
    padding-bottom: var(--sp-2);
    border-bottom: 1px solid var(--color-border);
}
.assumptions-content h3:first-of-type { margin-top: var(--sp-2); }

.standards-row {
    display: flex; gap: var(--sp-3); flex-wrap: wrap;
    margin: var(--sp-4) 0;
}
.standard-badge {
    padding: var(--sp-3) var(--sp-4);
    background: var(--color-bg-soft);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: var(--fs-sm);
    display: flex; align-items: center; gap: var(--sp-2);
}
.standard-badge .badge-mark {
    color: var(--color-accent-dark);
    font-size: var(--fs-md);
}

.dictionary-table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--sp-4) 0;
    font-size: var(--fs-sm);
}
.dictionary-table th {
    background: var(--color-bg-soft);
    text-align: left;
    padding: var(--sp-3) var(--sp-4);
    border-bottom: 2px solid var(--color-border);
    font-weight: var(--fw-semibold);
    color: var(--color-text);
}
.dictionary-table td {
    padding: var(--sp-2) var(--sp-4);
    border-bottom: 1px solid var(--color-border-soft);
    vertical-align: top;
}
.dictionary-table tr:hover td { background: var(--color-bg-soft); }
.dictionary-table .col-name { font-family: var(--font-mono); color: var(--color-primary); }
.dictionary-table .col-range { color: var(--color-text-muted); }

.defect-mechanism-card {
    background: var(--color-bg-soft);
    border: 1px solid var(--color-border);
    border-left: 4px solid var(--color-primary);
    border-radius: var(--radius);
    padding: var(--sp-4);
}
.defect-mechanism-card .defect-name {
    font-weight: var(--fw-bold);
    color: var(--color-primary);
    margin-bottom: var(--sp-2);
}
.defect-mechanism-card .drivers {
    font-size: var(--fs-sm);
    color: var(--color-text);
    margin-bottom: var(--sp-2);
}
.defect-mechanism-card .mechanism {
    font-size: var(--fs-sm);
    color: var(--color-text-muted);
    font-style: italic;
}

.verification-report {
    background: #0F1A2E;
    color: #B7C9E2;
    font-family: var(--font-mono);
    font-size: var(--fs-sm);
    padding: var(--sp-5);
    border-radius: var(--radius);
    overflow-x: auto;
    margin: var(--sp-4) 0;
    max-height: 500px;
    overflow-y: auto;
    line-height: 1.55;
    border: 1px solid #1c2c4a;
    white-space: pre-wrap;
}

.bullet-list { padding-left: var(--sp-5); margin: 0; }
.bullet-list li { margin-bottom: var(--sp-2); }

.process-steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sp-6);
    margin: var(--sp-8) 0;
}
.process-step {
    position: relative;
    padding: var(--sp-6);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}
.process-step .step-num {
    position: absolute;
    top: -16px; left: var(--sp-5);
    width: 32px; height: 32px;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-weight: var(--fw-bold);
}

.timeline {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 0;
    margin: var(--sp-8) 0;
    position: relative;
}
.timeline::before {
    content: '';
    position: absolute;
    top: 19px; left: 5%; right: 5%;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}
.timeline-step { text-align: center; position: relative; }
.timeline-step .dot {
    width: 38px; height: 38px;
    background: var(--color-primary);
    border: 4px solid #fff;
    border-radius: 50%;
    margin: 0 auto var(--sp-3);
    color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-weight: var(--fw-bold);
    position: relative;
    z-index: 1;
}
.timeline-step .timeline-label {
    font-weight: var(--fw-semibold);
    font-size: var(--fs-sm);
    color: var(--color-text);
}
.timeline-step .timeline-weeks {
    font-size: var(--fs-xs);
    color: var(--color-text-soft);
    margin-top: 4px;
}
@media (max-width: 800px) {
    .timeline { grid-template-columns: repeat(2, 1fr); gap: var(--sp-6); }
    .timeline::before { display: none; }
    .process-steps { grid-template-columns: 1fr; }
}

/* ========== DEMO PAGE ========== */
.demo-layout {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: var(--sp-6);
    align-items: start;
    padding-top: var(--sp-6);
    padding-bottom: var(--sp-12);
}
@media (max-width: 1100px) {
    .demo-layout { grid-template-columns: 1fr; }
}

.sliders-panel {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--sp-5);
    position: sticky;
    top: calc(var(--nav-h) + var(--sp-3));
    max-height: calc(100vh - var(--nav-h) - var(--sp-6));
    overflow-y: auto;
}
.preset-buttons {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sp-2);
    margin-bottom: var(--sp-4);
}
.preset-buttons.preset-buttons-two {
    grid-template-columns: 1fr 1fr;
}
.preset-buttons.preset-buttons-two button {
    padding: var(--sp-3) var(--sp-3);
    font-size: var(--fs-sm);
    line-height: 1.25;
}
.preset-buttons button {
    padding: var(--sp-2) var(--sp-3);
    background: var(--color-bg-soft);
    border: 1.5px solid var(--color-border);
    color: var(--color-text);
    border-radius: var(--radius);
    font-weight: var(--fw-semibold);
    font-size: var(--fs-sm);
    transition: all var(--t);
}
.preset-buttons button:hover {
    background: var(--color-bg-muted);
    border-color: var(--color-primary-light);
}
.preset-buttons button.active {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}
.preset-buttons button.active.ai {
    background: var(--color-accent-dark);
    border-color: var(--color-accent-dark);
}

.slider-group h4 {
    font-size: var(--fs-sm);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-soft);
    margin: 0;
    font-weight: var(--fw-semibold);
}
/* Collapsible <details> slider groups */
details.slider-group {
    margin: var(--sp-3) 0;
    border-top: 1px solid var(--color-border-soft);
    padding-top: var(--sp-3);
}
details.slider-group:first-of-type { border-top: none; padding-top: 0; }
details.slider-group > summary {
    list-style: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--sp-2);
    user-select: none;
}
details.slider-group > summary::-webkit-details-marker { display: none; }
details.slider-group > summary .group-toggle {
    font-size: var(--fs-sm);
    color: var(--color-text-soft);
    transition: transform var(--t);
}
details.slider-group[open] > summary .group-toggle {
    transform: rotate(180deg);
    color: var(--color-primary);
}
details.slider-group > summary:hover { color: var(--color-text); }
details.slider-group > summary:hover h4 { color: var(--color-text); }

/* ----- Part drawing (Dimensional section) ----- */
.part-drawing {
    margin: var(--sp-3) 0;
    padding: var(--sp-3);
    background: var(--color-bg-soft);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
}
.part-drawing-title {
    font-size: var(--fs-xs);
    font-weight: var(--fw-semibold);
    color: var(--color-text);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: var(--sp-2);
}
.part-svg {
    width: 100%;
    height: auto;
    background: #fff;
    border-radius: var(--radius-sm);
    padding: var(--sp-2);
}
.part-drawing-legend {
    display: flex;
    gap: var(--sp-3);
    flex-wrap: wrap;
    margin-top: var(--sp-2);
}
.legend-item {
    font-size: var(--fs-xs);
    color: var(--color-text-muted);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.legend-swatch {
    width: 10px; height: 10px;
    border-radius: 2px;
    display: inline-block;
}
.part-drawing-note {
    font-size: var(--fs-xs);
    color: var(--color-text-muted);
    margin: var(--sp-2) 0 0;
    line-height: 1.5;
}

/* ----- Warranty info tip (click/hover) ----- */
.info-tip {
    display: inline-flex;
    position: relative;
    margin-left: var(--sp-2);
    cursor: help;
    outline: none;
}
.info-icon {
    width: 18px; height: 18px;
    border-radius: 50%;
    background: var(--color-bg-muted);
    color: var(--color-text-muted);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: var(--fw-bold);
    border: 1px solid var(--color-border);
}
.info-tip:hover .info-icon,
.info-tip:focus .info-icon {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}
.info-tip-body {
    position: absolute;
    top: 28px;
    right: -10px;
    width: 360px;
    background: var(--color-surface-dark);
    color: var(--color-text-on-dark);
    padding: var(--sp-4);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    font-size: var(--fs-sm);
    font-weight: 400;
    line-height: var(--lh-normal);
    text-transform: none;
    letter-spacing: normal;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-4px);
    transition: opacity var(--t), transform var(--t);
    z-index: 100;
}
.info-tip-body strong { color: var(--color-accent); }
.info-tip-body ul { margin: var(--sp-2) 0; padding-left: var(--sp-5); }
.info-tip-body li { margin: 4px 0; color: rgba(247,249,252,0.85); }
.info-tip-body .font-mono { background: rgba(255,255,255,0.08); padding: 1px 4px; border-radius: 3px; }
.info-tip-body em { color: var(--color-text-soft); }
.info-tip:hover .info-tip-body,
.info-tip:focus .info-tip-body,
.info-tip:focus-within .info-tip-body {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

/* ----- AI-help tab in nav ----- */
.ai-help-tab {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px var(--sp-3);
    background: linear-gradient(135deg, rgba(14,77,166,0.10), rgba(0,181,160,0.10));
    border: 1px solid rgba(14,77,166,0.25);
    border-radius: var(--radius-pill);
    font-size: var(--fs-xs);
    font-weight: var(--fw-semibold);
    color: var(--color-primary);
    cursor: pointer;
    outline: none;
    user-select: none;
}
.ai-help-tab:hover { background: linear-gradient(135deg, rgba(14,77,166,0.18), rgba(0,181,160,0.18)); }
.ai-help-pop {
    position: absolute;
    top: 36px;
    right: 0;
    width: 420px;
    max-width: 90vw;
    background: var(--color-surface-dark);
    color: var(--color-text-on-dark);
    padding: var(--sp-5);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    font-weight: 400;
    font-size: var(--fs-sm);
    line-height: var(--lh-normal);
    letter-spacing: normal;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-6px);
    transition: opacity var(--t), transform var(--t);
    z-index: 100;
}
.ai-help-pop strong { color: var(--color-accent); }
.ai-help-pop ol { margin: var(--sp-3) 0; padding-left: var(--sp-5); }
.ai-help-pop li { margin: var(--sp-2) 0; color: rgba(247,249,252,0.88); }
.ai-help-pop li em { color: var(--color-text-soft); font-style: normal; opacity: 0.85; }
.ai-help-pop a { color: var(--color-accent); }
.ai-help-cta {
    display: inline-block;
    margin-top: var(--sp-2);
    padding: 6px var(--sp-3);
    background: var(--color-accent);
    color: var(--color-surface-dark) !important;
    border-radius: var(--radius);
    font-weight: var(--fw-semibold);
}
.ai-help-cta:hover { background: #00d6c0; }
.ai-help-tab:hover .ai-help-pop,
.ai-help-tab:focus .ai-help-pop,
.ai-help-tab:focus-within .ai-help-pop {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}
@media (max-width: 720px) {
    .ai-help-pop { right: -50px; width: 320px; }
}
.slider-row {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    margin-bottom: var(--sp-3);
    gap: var(--sp-3);
}
.slider-row label {
    font-size: var(--fs-sm);
    color: var(--color-text);
    font-weight: var(--fw-medium);
}
.slider-row .value {
    font-family: var(--font-mono);
    font-size: var(--fs-sm);
    color: var(--color-primary);
    font-weight: var(--fw-semibold);
    background: var(--color-bg-soft);
    padding: 2px var(--sp-2);
    border-radius: var(--radius-sm);
    min-width: 70px;
    text-align: right;
}
.slider-row input[type="range"] {
    grid-column: 1 / -1;
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--color-border);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
    cursor: pointer;
}
.slider-row input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px; height: 18px;
    border-radius: 50%;
    background: var(--color-primary);
    cursor: pointer;
    transition: transform var(--t-fast);
    border: 2px solid #fff;
    box-shadow: var(--shadow-sm);
}
.slider-row input[type="range"]::-moz-range-thumb {
    width: 18px; height: 18px;
    border-radius: 50%;
    background: var(--color-primary);
    cursor: pointer;
    border: 2px solid #fff;
    box-shadow: var(--shadow-sm);
}
.slider-row input[type="range"]:hover::-webkit-slider-thumb { transform: scale(1.15); }

.select-row {
    margin-bottom: var(--sp-3);
}
.select-row label {
    display: block;
    font-size: var(--fs-sm);
    color: var(--color-text);
    margin-bottom: 4px;
    font-weight: var(--fw-medium);
}
.select-row select {
    width: 100%;
    padding: var(--sp-2) var(--sp-3);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-bg);
    color: var(--color-text);
    font-size: var(--fs-sm);
}

.results-panel {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-5);
}
.results-panel .full { grid-column: 1 / -1; }
@media (max-width: 720px) {
    .results-panel { grid-template-columns: 1fr; }
}

.gauge-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--sp-6);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: border-color var(--t-slow);
}
.gauge-card.risk-high   { border-color: rgba(220,38,38,0.4); background: linear-gradient(180deg, rgba(220,38,38,0.04), var(--color-surface)); }
.gauge-card.risk-mid    { border-color: rgba(245,158,11,0.4); background: linear-gradient(180deg, rgba(245,158,11,0.04), var(--color-surface)); }
.gauge-card.risk-low    { border-color: rgba(22,163,74,0.4);  background: linear-gradient(180deg, rgba(22,163,74,0.04), var(--color-surface)); }

.gauge-svg-wrap {
    position: relative;
    width: 220px;
    height: 220px;
}
.gauge-svg-wrap .pct {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
}
.gauge-svg-wrap .pct .value {
    font-size: 2.75rem;
    font-weight: var(--fw-heavy);
    line-height: 1;
    letter-spacing: -0.02em;
}
.gauge-svg-wrap .pct .label {
    font-size: var(--fs-xs);
    color: var(--color-text-soft);
    margin-top: 4px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: var(--fw-semibold);
}

.predicted-defect-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--sp-6);
}
.predicted-defect-card .defect-class {
    font-size: var(--fs-xl);
    font-weight: var(--fw-bold);
    color: var(--color-primary);
    margin-bottom: var(--sp-2);
}
.predicted-defect-card .top-class-prob {
    font-family: var(--font-mono);
    color: var(--color-text-muted);
    font-size: var(--fs-sm);
}
.predicted-defect-card .disposition-pill {
    display: inline-block;
    margin-top: var(--sp-3);
    padding: var(--sp-2) var(--sp-4);
    border-radius: var(--radius-pill);
    font-size: var(--fs-sm);
    font-weight: var(--fw-semibold);
}
.disposition-pill[data-disp="OK"]      { background: rgba(22,163,74,0.10);  color: #15803D; }
.disposition-pill[data-disp="Rework"]  { background: rgba(245,158,11,0.10); color: #B45309; }
.disposition-pill[data-disp="Scrap"]   { background: rgba(220,38,38,0.10);  color: #B91C1C; }

.impact-stack {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--sp-6);
}
.impact-stack h4 { margin-bottom: var(--sp-3); }
.impact-row {
    display: grid;
    grid-template-columns: 22px 1fr auto;
    align-items: center;
    gap: var(--sp-3);
    padding: var(--sp-2) 0;
    font-size: var(--fs-sm);
    border-bottom: 1px solid var(--color-border-soft);
}
.impact-row:last-of-type { border-bottom: none; font-weight: var(--fw-bold); margin-top: var(--sp-2); padding-top: var(--sp-3); border-top: 1.5px solid var(--color-border); }
.impact-row .swatch {
    width: 14px; height: 14px;
    border-radius: 3px;
    background: var(--color-primary);
}
.impact-row .value { font-family: var(--font-mono); font-weight: var(--fw-semibold); }
.impact-stack .annual {
    margin-top: var(--sp-4);
    padding: var(--sp-4);
    background: linear-gradient(135deg, rgba(0,181,160,0.06), rgba(14,77,166,0.06));
    border-radius: var(--radius);
    text-align: center;
}
.impact-stack .annual .lbl { font-size: var(--fs-xs); color: var(--color-text-soft); text-transform: uppercase; letter-spacing: 0.1em; }
.impact-stack .annual .val { font-size: var(--fs-xl); font-weight: var(--fw-bold); color: var(--color-primary); margin-top: var(--sp-1); }

.root-cause-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--sp-6);
}
.root-cause-card h4 { margin-bottom: var(--sp-1); }
.root-cause-card .sub { font-size: var(--fs-xs); color: var(--color-text-soft); margin-bottom: var(--sp-4); }
.shap-row {
    display: grid;
    grid-template-columns: 160px 1fr auto;
    align-items: center;
    gap: var(--sp-3);
    margin-bottom: var(--sp-2);
}
.shap-row .feat {
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--color-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.shap-row .bar-wrap {
    height: 10px;
    background: var(--color-bg-muted);
    border-radius: 5px;
    overflow: hidden;
    position: relative;
}
.shap-row .bar {
    position: absolute;
    top: 0; bottom: 0;
    border-radius: 5px;
}
.shap-row .bar.pos { background: var(--color-risk-high); }
.shap-row .bar.neg { background: var(--color-risk-low); }
.shap-row .val { font-family: var(--font-mono); font-size: var(--fs-xs); color: var(--color-text-muted); }

.actions-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--sp-6);
}
.action-item {
    padding: var(--sp-3) 0;
    border-bottom: 1px solid var(--color-border-soft);
    font-size: var(--fs-sm);
    display: flex;
    align-items: flex-start;
    gap: var(--sp-3);
}
.action-item:last-child { border: none; }
.action-item .dot {
    flex-shrink: 0;
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--color-accent);
    margin-top: 8px;
}

.warranty-meter {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--sp-6);
}
.warranty-bar {
    margin-top: var(--sp-3);
    height: 28px;
    background: linear-gradient(90deg, var(--color-risk-low), var(--color-risk-mid), var(--color-risk-high));
    border-radius: var(--radius);
    position: relative;
    overflow: visible;
}
.warranty-needle {
    position: absolute;
    top: -6px;
    width: 4px;
    height: 40px;
    background: var(--color-text);
    border-radius: 2px;
    transform: translateX(-50%);
    transition: left var(--t-slow);
}
.warranty-scale {
    display: flex;
    justify-content: space-between;
    margin-top: var(--sp-2);
    font-size: var(--fs-xs);
    color: var(--color-text-soft);
}
.warranty-value {
    font-size: var(--fs-xl);
    font-weight: var(--fw-bold);
    color: var(--color-text);
    margin-top: var(--sp-2);
}

.annual-impact-strip {
    margin-top: var(--sp-6);
    padding: var(--sp-6);
    background: var(--color-surface-dark);
    color: var(--color-text-on-dark);
    border-radius: var(--radius-md);
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sp-4);
    align-items: stretch;
}
.annual-impact-strip h4 {
    color: #fff;
    margin: 0;
    font-size: var(--fs-md);
    grid-column: 1 / -1;
    padding-bottom: var(--sp-2);
    border-bottom: 1px solid rgba(255,255,255,0.10);
    margin-bottom: var(--sp-2);
}
.annual-impact-strip .metric { text-align: center; padding: var(--sp-2) 0; }
.annual-impact-strip .metric .lbl { font-size: var(--fs-xs); color: rgba(247,249,252,0.65); text-transform: uppercase; letter-spacing: 0.08em; }
.annual-impact-strip .metric .val {
    font-size: var(--fs-xl);
    font-weight: var(--fw-bold);
    color: var(--color-accent);
    margin-top: 4px;
}
.annual-impact-strip .metric .val.zero { color: var(--color-text-soft); font-size: var(--fs-md); }
.annual-impact-strip .metric .val.neg  { color: #FCD34D; }
.annual-impact-strip .metric .metric-sub {
    font-size: var(--fs-xs);
    color: rgba(247,249,252,0.55);
    margin-top: 6px;
    font-style: italic;
    line-height: 1.4;
}
.annual-strip-note {
    grid-column: 1 / -1;
    margin-top: var(--sp-3);
    padding: var(--sp-3) var(--sp-4);
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius);
    font-size: var(--fs-xs);
    color: rgba(247,249,252,0.75);
    line-height: var(--lh-normal);
}
.annual-strip-note strong { color: var(--color-accent); }
@media (max-width: 720px) { .annual-impact-strip { grid-template-columns: 1fr; } }

.latency-pill {
    display: inline-flex;
    align-items: center;
    gap: var(--sp-2);
    padding: 4px var(--sp-3);
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    background: rgba(22,163,74,0.10);
    color: #15803D;
    border-radius: var(--radius-pill);
    border: 1px solid rgba(22,163,74,0.25);
}

/* ========== ANALYTICS PAGE ========== */
.analytics-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-6);
    padding: var(--sp-6) 0 var(--sp-12);
}
.analytics-grid .span-2 { grid-column: span 2; }
@media (max-width: 1100px) {
    .analytics-grid { grid-template-columns: 1fr; }
    .analytics-grid .span-2 { grid-column: span 1; }
}

.chart-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--sp-6);
}
.chart-card h3 { margin-bottom: var(--sp-1); }
.chart-card .sub { font-size: var(--fs-sm); color: var(--color-text-muted); margin-bottom: var(--sp-4); }
.chart-card canvas { max-width: 100%; }

.overview-kpis {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--sp-4);
    margin-bottom: var(--sp-6);
}
.kpi-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--sp-5);
}
.kpi-card .lbl { font-size: var(--fs-xs); color: var(--color-text-soft); text-transform: uppercase; letter-spacing: 0.08em; }
.kpi-card .val { font-size: var(--fs-2xl); font-weight: var(--fw-bold); margin-top: var(--sp-1); color: var(--color-text); letter-spacing: -0.01em; }
.kpi-card .sub { font-size: var(--fs-xs); color: var(--color-text-soft); margin-top: 4px; }
.kpi-card.accent .val { color: var(--color-accent-dark); }
.kpi-card.warning .val { color: #B45309; }
.kpi-card.danger .val { color: #B91C1C; }
@media (max-width: 800px) { .overview-kpis { grid-template-columns: 1fr 1fr; } }

.cpk-row {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: baseline;
    padding: var(--sp-3) 0;
    border-bottom: 1px solid var(--color-border-soft);
    font-size: var(--fs-sm);
}
.cpk-row:last-child { border: none; }
.cpk-row .cpk-name { font-weight: var(--fw-semibold); }
.cpk-row .cpk-value { font-family: var(--font-mono); font-weight: var(--fw-bold); }
.cpk-row .cpk-value.pass { color: #15803D; }
.cpk-row .cpk-value.fail { color: #B91C1C; }

.breakdown-bar-row {
    display: grid;
    grid-template-columns: 80px 1fr auto;
    align-items: center;
    gap: var(--sp-3);
    padding: var(--sp-2) 0;
    font-size: var(--fs-sm);
}
.breakdown-bar-row .lbl { font-family: var(--font-mono); }
.breakdown-bar-row .bar-bg {
    height: 14px;
    background: var(--color-bg-muted);
    border-radius: var(--radius-sm);
    overflow: hidden;
}
.breakdown-bar-row .bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    border-radius: var(--radius-sm);
}
.breakdown-bar-row .val { font-family: var(--font-mono); font-weight: var(--fw-semibold); }

.sample-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--fs-xs);
}
.sample-table th {
    background: var(--color-bg-soft);
    text-align: left;
    padding: var(--sp-2);
    font-weight: var(--fw-semibold);
    border-bottom: 2px solid var(--color-border);
    white-space: nowrap;
}
.sample-table td {
    padding: var(--sp-2);
    border-bottom: 1px solid var(--color-border-soft);
    font-family: var(--font-mono);
}
.sample-table tr:hover td { background: var(--color-bg-soft); }
.sample-wrap { max-height: 420px; overflow: auto; border: 1px solid var(--color-border); border-radius: var(--radius); }

.model-metric-row {
    display: grid;
    grid-template-columns: 1fr auto auto;
    align-items: baseline;
    padding: var(--sp-3) 0;
    border-bottom: 1px solid var(--color-border-soft);
    font-size: var(--fs-sm);
    gap: var(--sp-3);
}
/* ===================================================================
   ASSUMPTIONS PAGE — structured view of the metallurgical + cost JSON
   =================================================================== */
.assumption-block {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--sp-6);
    margin-bottom: var(--sp-5);
}
.assumption-block h3 {
    color: var(--color-primary);
    margin: 0 0 var(--sp-4);
    padding-bottom: var(--sp-2);
    border-bottom: 1px solid var(--color-border);
}
.assumption-grid { gap: var(--sp-3); }
.assumption-card {
    background: var(--color-bg-soft);
    border: 1px solid var(--color-border-soft);
    border-radius: var(--radius);
    padding: var(--sp-4);
}
.assumption-card .ac-label {
    font-size: var(--fs-xs);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-soft);
    font-weight: var(--fw-semibold);
    margin-bottom: 4px;
}
.assumption-card .ac-value {
    font-size: var(--fs-md);
    font-weight: var(--fw-semibold);
    color: var(--color-text);
    line-height: 1.2;
}
.assumption-card .ac-sub {
    font-size: var(--fs-xs);
    color: var(--color-text-muted);
    margin-top: 4px;
    line-height: 1.4;
}
.assumption-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--fs-sm);
}
.assumption-table th {
    background: var(--color-bg-soft);
    text-align: left;
    padding: var(--sp-2) var(--sp-3);
    border-bottom: 2px solid var(--color-border);
    font-weight: var(--fw-semibold);
    color: var(--color-text);
    font-size: var(--fs-xs);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}
.assumption-table td {
    padding: var(--sp-2) var(--sp-3);
    border-bottom: 1px solid var(--color-border-soft);
    vertical-align: top;
}
.assumption-table .col-name {
    font-family: var(--font-mono);
    color: var(--color-primary);
    font-weight: var(--fw-semibold);
}
.assumption-table tr:hover td { background: var(--color-bg-soft); }
.assumption-rule {
    background: var(--color-bg-soft);
    border-left: 3px solid var(--color-accent);
    padding: var(--sp-3) var(--sp-4);
    border-radius: var(--radius-sm);
    font-size: var(--fs-sm);
    margin-top: var(--sp-3);
    line-height: var(--lh-normal);
}
.assumption-rule code {
    background: var(--color-bg);
    padding: 1px 6px;
    border-radius: 3px;
    color: var(--color-primary);
    font-family: var(--font-mono);
}

.model-metric-row .metric-name { font-weight: var(--fw-semibold); }
.model-metric-row .metric-val  { font-family: var(--font-mono); font-weight: var(--fw-bold); color: var(--color-primary); }
.model-metric-row .metric-target { font-size: var(--fs-xs); color: var(--color-text-soft); }

/* ===================================================================
   CAPABILITIES PAGE — Four-Layer AI Story
   =================================================================== */

/* ----- 4-Quadrant hero ----- */
.layer-quadrant {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-5);
    margin: var(--sp-4) 0 var(--sp-8);
}
@media (max-width: 800px) { .layer-quadrant { grid-template-columns: 1fr; } }

.layer-tile {
    display: block;
    padding: var(--sp-8);
    border-radius: var(--radius-lg);
    background: var(--color-surface);
    border: 1.5px solid var(--color-border);
    text-decoration: none;
    color: inherit;
    transition: transform var(--t), box-shadow var(--t), border-color var(--t);
    position: relative;
    overflow: hidden;
}
.layer-tile::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: var(--accent, var(--color-primary));
}
.layer-tile:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent, var(--color-primary));
}

.layer-tile .layer-num {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: var(--fw-heavy);
    color: var(--accent, var(--color-primary));
    line-height: 1;
    letter-spacing: -0.03em;
    opacity: 0.85;
}
.layer-tile .layer-icon {
    font-size: 2rem;
    margin-top: var(--sp-2);
    margin-bottom: var(--sp-3);
}
.layer-tile h3 {
    margin: 0 0 var(--sp-1);
    font-size: var(--fs-xl);
}
.layer-tile .tile-tag {
    color: var(--color-text-soft);
    margin-bottom: var(--sp-3);
    font-size: var(--fs-sm);
}
.layer-tile .tile-body {
    color: var(--color-text-muted);
    font-size: var(--fs-sm);
    margin-bottom: var(--sp-4);
}

.status-pill {
    display: inline-flex;
    align-items: center;
    gap: var(--sp-1);
    padding: 4px var(--sp-3);
    border-radius: var(--radius-pill);
    font-size: var(--fs-xs);
    font-weight: var(--fw-semibold);
    background: rgba(22, 163, 74, 0.10);
    color: #15803D;
    border: 1px solid rgba(22, 163, 74, 0.25);
    letter-spacing: 0.05em;
}
.status-live { color: #15803D; }

/* Per-layer accent colors (still in palette family) */
.tile-01 { --accent: #0E4DA6; }                  /* primary blue */
.tile-02 { --accent: #00B5A0; }                  /* teal */
.tile-03 { --accent: #6366F1; }                  /* indigo */
.tile-04 { --accent: #B45309; }                  /* amber */

/* ----- Layer detail sections ----- */
.layer-header {
    display: flex;
    align-items: center;
    gap: var(--sp-5);
    margin-bottom: var(--sp-8);
    padding-bottom: var(--sp-5);
    border-bottom: 1px solid var(--color-border);
}
.layer-num-display {
    font-family: var(--font-display);
    font-size: clamp(3rem, 6vw, 5rem);
    font-weight: var(--fw-heavy);
    line-height: 0.9;
    letter-spacing: -0.04em;
    color: var(--color-primary);
    opacity: 0.85;
}
#layer-01 .layer-num-display { color: #0E4DA6; }
#layer-02 .layer-num-display { color: #00B5A0; }
#layer-03 .layer-num-display { color: #6366F1; }
#layer-04 .layer-num-display { color: #B45309; }
.layer-tagline {
    color: var(--color-text-soft);
    margin: 0;
    font-size: var(--fs-md);
}

.layer-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1.1fr;
    gap: var(--sp-8);
    margin-bottom: var(--sp-8);
    align-items: start;
}
@media (max-width: 1000px) {
    .layer-grid { grid-template-columns: 1fr; gap: var(--sp-6); }
}
.layer-col h4 {
    margin-bottom: var(--sp-3);
    padding-bottom: var(--sp-2);
    border-bottom: 2px solid var(--color-border-soft);
    color: var(--color-text);
    font-size: var(--fs-md);
}
.layer-col p { font-size: var(--fs-sm); line-height: var(--lh-normal); }
.layer-col .bullet-list { padding-left: var(--sp-4); }

/* ----- Example panels ----- */
.example-panel {
    background: var(--color-bg-soft);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--sp-4);
    font-size: var(--fs-sm);
}
.example-header {
    font-weight: var(--fw-semibold);
    color: var(--color-text);
    margin-bottom: var(--sp-3);
    padding-bottom: var(--sp-2);
    border-bottom: 1px solid var(--color-border);
}

/* Layer 01 — chat mock */
.chat-mock .chip-row {
    display: flex; flex-wrap: wrap; gap: var(--sp-2);
    margin-bottom: var(--sp-4);
}
.chip {
    padding: 4px var(--sp-3);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-pill);
    font-size: var(--fs-xs);
    color: var(--color-text-muted);
    cursor: default;
}
.chat-bubble {
    padding: var(--sp-3) var(--sp-4);
    border-radius: var(--radius);
    margin-bottom: var(--sp-2);
    font-size: var(--fs-sm);
    line-height: var(--lh-normal);
}
.chat-bubble.user {
    background: var(--color-primary);
    color: #fff;
    margin-left: var(--sp-6);
    border-bottom-right-radius: 2px;
}
.chat-bubble.assistant {
    background: var(--color-bg);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    margin-right: var(--sp-4);
    border-bottom-left-radius: 2px;
}
.chat-bubble.assistant ul { margin: var(--sp-2) 0 var(--sp-2); padding-left: var(--sp-5); }
.chat-bubble.assistant li { margin: 4px 0; }

/* Layer 02 — anomaly rows */
.anomaly-row {
    padding: var(--sp-3) 0;
    border-bottom: 1px solid var(--color-border-soft);
}
.anomaly-row:last-child { border-bottom: none; }
.anomaly-head {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 6px;
}
.anomaly-features {
    font-size: var(--fs-xs);
    color: var(--color-text-muted);
    line-height: 1.6;
}
.anomaly-features .sigma {
    font-family: var(--font-mono);
    font-weight: var(--fw-semibold);
    margin-left: var(--sp-1);
}
.anomaly-features .sigma.high { color: #B91C1C; }
.anomaly-features .sigma.low  { color: #B45309; }
.anomaly-pred {
    margin-top: 6px;
    font-size: var(--fs-xs);
    color: var(--color-text);
}

/* Layer 03 — optimization mock */
.opt-grid {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    margin: var(--sp-3) 0 var(--sp-4);
}
.opt-col { text-align: center; }
.opt-label { font-size: var(--fs-xs); color: var(--color-text-soft); text-transform: uppercase; letter-spacing: 0.08em; }
.opt-value { font-size: 2.5rem; font-weight: var(--fw-heavy); line-height: 1; letter-spacing: -0.02em; }
.opt-sub   { font-size: var(--fs-xs); color: var(--color-text-soft); }
.opt-arrow { font-size: 2rem; color: var(--color-text-soft); padding: 0 var(--sp-2); }
.risk-low-text  { color: #15803D; }
.risk-mid-text  { color: #B45309; }
.risk-high-text { color: #B91C1C; }

.opt-table {
    border-top: 1px solid var(--color-border);
    padding-top: var(--sp-3);
}
.opt-row {
    display: flex; justify-content: space-between;
    padding: 6px 0;
    font-size: var(--fs-xs);
    border-bottom: 1px solid var(--color-border-soft);
}
.opt-row:last-child { border-bottom: none; }

/* Layer 04 — confidence bands */
.conf-row {
    padding: var(--sp-3) 0;
    border-bottom: 1px solid var(--color-border-soft);
}
.conf-row:last-child { border-bottom: none; }
.conf-head {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: var(--sp-2);
}
.conf-label {
    font-size: var(--fs-xs);
    font-weight: var(--fw-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-soft);
}
.conf-high .conf-label { color: #15803D; }
.conf-mid  .conf-label { color: #B45309; }
.conf-low  .conf-label { color: #B91C1C; }
.conf-bar-wrap {
    position: relative;
    height: 16px;
    background: linear-gradient(90deg,
        rgba(22,163,74,0.08) 0%, rgba(245,158,11,0.08) 50%, rgba(220,38,38,0.08) 100%);
    border-radius: 8px;
    margin: var(--sp-1) 0;
    border: 1px solid var(--color-border-soft);
}
.conf-bar {
    position: absolute;
    top: 2px; bottom: 2px;
    background: rgba(22,163,74,0.55);
    border-radius: 6px;
}
.conf-bar-mid { background: rgba(245,158,11,0.55); }
.conf-bar-low { background: rgba(220,38,38,0.55); }
.conf-point {
    position: absolute;
    top: -2px;
    width: 3px;
    height: 20px;
    background: var(--color-text);
    border-radius: 1.5px;
    transform: translateX(-50%);
}
.conf-meta {
    font-size: var(--fs-xs);
    color: var(--color-text-muted);
    margin-top: 6px;
}
.conf-status {
    font-size: var(--fs-xs);
    font-weight: var(--fw-semibold);
    margin-top: 4px;
}

/* ----- Proof strip (below each layer) ----- */
.proof-strip {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sp-4);
    margin-top: var(--sp-6);
    padding: var(--sp-5);
    background: var(--color-bg-soft);
    border-radius: var(--radius);
    border-left: 3px solid var(--color-accent);
}
.proof-item {
    font-size: var(--fs-sm);
    color: var(--color-text);
}
@media (max-width: 800px) {
    .proof-strip { grid-template-columns: 1fr; }
}

/* ----- "Why four layers" statement ----- */
.four-layer-statement {
    max-width: 70ch;
    margin: 0 auto;
    padding: var(--sp-12) var(--sp-6);
}
.four-quotes {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-4);
    margin-top: var(--sp-6);
}
.quote-item {
    padding: var(--sp-4);
    background: var(--color-bg-soft);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: var(--fs-sm);
    position: relative;
}
.quote-mark {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: var(--fw-heavy);
    color: var(--color-primary);
    line-height: 0.5;
    margin-right: var(--sp-1);
    vertical-align: -8px;
}
@media (max-width: 700px) {
    .four-quotes { grid-template-columns: 1fr; }
}

/* ----- Phase roadmap cards ----- */
.phase-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sp-5);
}
.phase-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--sp-6);
}
.phase-head {
    display: flex; justify-content: space-between; align-items: baseline;
    margin-bottom: var(--sp-3);
}
.phase-label {
    font-weight: var(--fw-bold);
    color: var(--color-primary);
    font-size: var(--fs-sm);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}
.phase-when {
    font-size: var(--fs-xs);
    color: var(--color-text-soft);
    font-family: var(--font-mono);
}
.phase-list {
    list-style: none;
    padding: 0;
    margin: var(--sp-3) 0 0;
}
.phase-list li {
    padding: var(--sp-2) 0;
    border-bottom: 1px solid var(--color-border-soft);
    font-size: var(--fs-sm);
}
.phase-list li:last-child { border-bottom: none; }
.phase-sub {
    color: var(--color-text-muted);
    font-size: var(--fs-xs);
}
@media (max-width: 900px) {
    .phase-grid { grid-template-columns: 1fr; }
}