:root {
    --bg: #FAFAF9;
    --bg-alt: #F3F3F1;
    --surface: #FFFFFF;
    --ink: #0A0B0D;
    --ink-2: #3B3F46;
    --muted: #6B7079;
    --line: #E4E4E0;
    --line-strong: #D2D2CC;

    --dark: #0A0B0D;
    --dark-2: #121418;
    --dark-3: #1B1E24;
    --dark-line: #262A31;
    --dark-ink: #ECEDEF;
    --dark-muted: #8E939C;

    --run: #10B981;
    --labs: #F59E0B;
    --probe: #8B5CF6;
    --atlas: #0EA5E9;
    --run-ink: #047857;
    --labs-ink: #B45309;
    --probe-ink: #6D28D9;
    --atlas-ink: #0369A1;

    --pass: #15803D;
    --fail: #C2410C;
    --det: #B91C1C;
    --warn: #A16207;

    --radius: 10px;
    --radius-lg: 14px;
    --sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
    --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 72px;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: var(--sans);
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
    margin: 0;
    line-height: 1.15;
    letter-spacing: -0.02em;
}

p {
    margin: 0 0 1em;
}

a {
    color: inherit;
}

.mono {
    font-family: var(--mono);
}

.muted {
    color: var(--muted);
}

.container {
    width: 100%;
    max-width: 1160px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Product accent mapping */
[data-product="run"] { --accent: var(--run); --accent-ink: var(--run-ink); }
[data-product="labs"] { --accent: var(--labs); --accent-ink: var(--labs-ink); }
[data-product="probe"] { --accent: var(--probe); --accent-ink: var(--probe-ink); }
[data-product="atlas"] { --accent: var(--atlas); --accent-ink: var(--atlas-ink); }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 44px;
    padding: 0 20px;
    border-radius: 8px;
    border: 1px solid transparent;
    font: 500 15px/1 var(--sans);
    text-decoration: none;
    cursor: pointer;
    transition: background .15s, border-color .15s, color .15s;
}

.btn-sm {
    height: 36px;
    padding: 0 14px;
    font-size: 14px;
}

.btn-primary {
    background: var(--ink);
    color: #fff;
}

.btn-primary:hover {
    background: #262A31;
}

.btn-ghost {
    background: transparent;
    border-color: var(--line-strong);
    color: var(--ink);
}

.btn-ghost:hover {
    border-color: var(--ink);
}

.btn-block {
    width: 100%;
}

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(250, 250, 249, .85);
    backdrop-filter: saturate(160%) blur(12px);
    -webkit-backdrop-filter: saturate(160%) blur(12px);
    border-bottom: 1px solid var(--line);
}

.header-inner {
    display: flex;
    align-items: center;
    gap: 32px;
    height: 60px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.brand svg {
    width: 26px;
    height: 26px;
}

.brand-name {
    font-weight: 600;
    font-size: 16px;
    letter-spacing: -0.01em;
}

.site-nav {
    display: flex;
    gap: 4px;
    margin-right: auto;
}

.site-nav a {
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 14px;
    color: var(--ink-2);
    text-decoration: none;
}

.site-nav a:hover {
    color: var(--ink);
    background: var(--bg-alt);
}

/* Hero */
.hero {
    position: relative;
    overflow: hidden;
    padding: 96px 0 72px;
    border-bottom: 1px solid var(--line);
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(var(--line) 1px, transparent 1px),
        linear-gradient(90deg, var(--line) 1px, transparent 1px);
    background-size: 48px 48px;
    background-position: center top;
    mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 20%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 20%, transparent 75%);
    opacity: .7;
    pointer-events: none;
}

.hero-inner {
    position: relative;
    text-align: center;
}

.status-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin: 0 0 28px;
    padding: 5px 12px;
    border: 1px solid var(--line-strong);
    border-radius: 999px;
    background: var(--surface);
    font: 500 12px/1.4 var(--mono);
    color: var(--ink-2);
    letter-spacing: .02em;
}

.status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--labs);
    box-shadow: 0 0 0 3px rgba(245, 158, 11, .18);
}

.hero h1 {
    font-size: clamp(38px, 6.4vw, 72px);
    font-weight: 600;
    letter-spacing: -0.035em;
    line-height: 1.04;
}

.lede {
    max-width: 640px;
    margin: 24px auto 0;
    font-size: clamp(17px, 2vw, 20px);
    color: var(--ink-2);
}

.hero-sides {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px 28px;
    margin-top: 20px;
    font-size: 15px;
    color: var(--ink-2);
}

.hero-sides .mono {
    color: var(--muted);
    font-size: 12px;
    margin-right: 4px;
}

.hero-ctas {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 36px;
}

.hero-note {
    margin: 16px 0 0;
    font-size: 13px;
    color: var(--muted);
}

.product-strip {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    margin-top: 64px;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-lg);
    background: var(--surface);
    overflow: hidden;
    text-align: left;
}

.product-tile {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 24px 24px 26px;
    text-decoration: none;
    transition: background .15s;
}

.product-tile + .product-tile {
    border-left: 1px solid var(--line);
}

.product-tile::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    height: 3px;
    background: var(--accent);
    transform: scaleX(.18);
    transform-origin: left;
    transition: transform .3s ease;
}

.product-tile:hover {
    background: var(--bg);
}

.product-tile:hover::before {
    transform: scaleX(1);
}

.pt-name {
    font-size: 26px;
    font-weight: 600;
    letter-spacing: -0.03em;
}

.pt-q {
    font-size: 14px;
    color: var(--muted);
}

/* Sections */
.section {
    padding: 112px 0;
}

.section-tight {
    padding: 80px 0;
}

.section-alt {
    background: var(--bg-alt);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

.section-head {
    max-width: 720px;
    margin-bottom: 56px;
}

.section h2 {
    font-size: clamp(30px, 4vw, 44px);
    font-weight: 600;
    letter-spacing: -0.03em;
}

.section-sub {
    margin: 18px 0 0;
    font-size: 18px;
    color: var(--ink-2);
}

.eyebrow {
    margin: 0 0 14px;
    font: 500 12px/1.4 var(--mono);
    text-transform: uppercase;
    letter-spacing: .08em;
    color: var(--muted);
}

.product-label {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin: 0 0 18px;
    font: 600 13px/1 var(--mono);
    text-transform: uppercase;
    letter-spacing: .1em;
    color: var(--accent-ink);
}

.pl-dot {
    width: 10px;
    height: 10px;
    border-radius: 3px;
    background: var(--accent);
}

.fineprint {
    margin: 16px 0 0;
    font-size: 12.5px;
    color: var(--muted);
}

/* Platform */
.platform-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.qa-table {
    border-top: 1px solid var(--line-strong);
}

.qa-row {
    display: grid;
    grid-template-columns: 150px 1fr;
    gap: 16px;
    padding: 18px 0;
    border-bottom: 1px solid var(--line);
}

.qa-name {
    display: flex;
    align-items: center;
    gap: 10px;
    font: 600 14px/1.4 var(--mono);
}

.qa-name::before {
    content: "";
    width: 8px;
    height: 8px;
    border-radius: 2px;
    background: var(--accent);
    flex: none;
}

.qa-q {
    color: var(--ink-2);
}

.arch {
    margin: 0;
    padding: 36px 28px 24px;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-lg);
    background:
        radial-gradient(circle at 1px 1px, var(--line-strong) 1px, transparent 0) 0 0 / 16px 16px,
        var(--surface);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.arch-title {
    margin-bottom: 20px;
    font-size: 11px;
    letter-spacing: .3em;
    color: var(--muted);
}

.arch-node {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 180px;
    padding: 12px 18px;
    border: 1px solid var(--line-strong);
    border-top: 3px solid var(--accent);
    border-radius: 8px;
    background: var(--surface);
    text-align: center;
}

.an-name {
    font-weight: 600;
    font-size: 17px;
    letter-spacing: -0.01em;
}

.an-desc {
    font-size: 13px;
    color: var(--muted);
}

.arch-pair {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    width: 100%;
}

.arch-pair .arch-node {
    min-width: 0;
}

.arch-lines {
    width: 100%;
    height: 36px;
    overflow: visible;
}

.arch-lines path {
    fill: none;
    stroke: var(--ink-2);
    stroke-width: 1.25;
    vector-effect: non-scaling-stroke;
}

.arch figcaption {
    margin-top: 20px;
    font-size: 13px;
    color: var(--muted);
}

/* Split product sections */
.split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 72px;
    align-items: start;
}

.split-reverse .split-copy {
    order: 2;
}

.split-copy p {
    font-size: 17px;
    color: var(--ink-2);
}

.split-copy h2 {
    margin-bottom: 22px;
}

.config-spec {
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-lg);
    background: var(--surface);
    overflow: hidden;
}

.cs-head {
    padding: 14px 20px;
    border-bottom: 1px solid var(--line);
    font-size: 13px;
    color: var(--muted);
    background: var(--bg);
}

.config-spec ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.config-spec li {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 12px;
    padding: 11px 20px;
    font-size: 15px;
    border-bottom: 1px solid var(--line);
}

.config-spec li:last-child {
    border-bottom: 0;
}

.config-spec li .mono {
    font-size: 13px;
    color: var(--accent-ink);
    padding-top: 2px;
}

.questions {
    list-style: none;
    margin: 24px 0;
    padding: 0;
}

.questions li {
    position: relative;
    padding: 10px 0 10px 28px;
    border-top: 1px solid var(--line-strong);
    font-weight: 500;
}

.questions li::before {
    content: "?";
    position: absolute;
    left: 0;
    top: 10px;
    font: 600 14px/1.6 var(--mono);
    color: var(--accent-ink);
}

.chips {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.chips span {
    padding: 4px 10px;
    border: 1px solid var(--line-strong);
    border-radius: 6px;
    background: var(--surface);
    font: 12.5px/1.5 var(--mono);
    color: var(--ink-2);
}

.flow {
    display: flex;
    flex-direction: column;
    align-items: stretch;
}

.flow-step {
    display: grid;
    grid-template-columns: 36px 1fr;
    gap: 2px 12px;
    padding: 18px 20px;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius);
    background: var(--surface);
}

.fs-k {
    grid-row: span 2;
    font-size: 12px;
    color: var(--muted);
    padding-top: 3px;
}

.fs-t {
    font-weight: 600;
}

.fs-d {
    font-size: 14px;
    color: var(--muted);
}

.flow-step-out {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(245, 158, 11, .14);
}

.flow-arrow {
    position: relative;
    height: 28px;
    margin-left: 37px;
    border-left: 1px dashed var(--ink-2);
}

.flow-arrow::after {
    content: "";
    position: absolute;
    left: -4.5px;
    bottom: 0;
    border: 4px solid transparent;
    border-top: 5px solid var(--ink-2);
    border-bottom: 0;
}

.cfg-dots {
    display: grid;
    grid-template-columns: repeat(20, 1fr);
    gap: 4px;
    margin-top: 8px;
}

.cfg-dots i {
    display: block;
    aspect-ratio: 1;
    border-radius: 2px;
    background: var(--line-strong);
    transition: background .4s ease;
}

.cfg-dots i.on {
    background: var(--accent);
}

/* Dark sections */
.section-dark {
    background: var(--dark);
    color: var(--dark-ink);
}

.section-dark .section-sub,
.section-dark p {
    color: var(--dark-muted);
}

.section-dark .product-label {
    color: #B9A2FB;
}

.probe-layout {
    display: grid;
    grid-template-columns: 0.85fr 1.15fr;
    gap: 40px;
    align-items: center;
}

.probe-flow {
    display: flex;
    flex-direction: column;
}

.pf-node {
    display: flex;
    flex-direction: column;
    padding: 16px 20px;
    border: 1px solid var(--dark-line);
    border-radius: var(--radius);
    background: var(--dark-2);
}

.pf-node-accent {
    border-color: rgba(139, 92, 246, .6);
    background: linear-gradient(180deg, rgba(139, 92, 246, .14), rgba(139, 92, 246, .04));
}

.pf-k {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: .1em;
    color: var(--dark-muted);
}

.pf-t {
    font-size: 18px;
    font-weight: 600;
    color: #fff;
}

.pf-d {
    font-size: 14px;
    color: var(--dark-muted);
}

.pf-arrow {
    position: relative;
    height: 26px;
    margin-left: 28px;
    border-left: 1px dashed #4B515B;
}

.pf-arrow::after {
    content: "";
    position: absolute;
    left: -4.5px;
    bottom: 0;
    border: 4px solid transparent;
    border-top: 5px solid #4B515B;
    border-bottom: 0;
}

/* Terminal / result panels */
.terminal {
    border: 1px solid var(--dark-line);
    border-radius: var(--radius-lg);
    background: var(--dark-2);
    overflow: hidden;
    box-shadow: 0 24px 60px -30px rgba(0, 0, 0, .6);
}

.term-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 18px;
    border-bottom: 1px solid var(--dark-line);
    background: var(--dark-3);
}

.term-title {
    font-size: 12.5px;
    color: var(--dark-muted);
}

.term-body {
    padding: 10px 18px 14px;
    font-size: 13.5px;
}

.tr {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 7px 0;
    border-bottom: 1px dashed rgba(127, 127, 127, .22);
}

.tr:last-child {
    border-bottom: 0;
}

.tr > span:first-child {
    margin-right: auto;
}

.terminal .tr > span:first-child {
    color: var(--dark-ink);
}

.src {
    font-size: 11px;
    color: var(--dark-muted);
    padding: 1px 6px;
    border: 1px solid var(--dark-line);
    border-radius: 4px;
}

.res {
    min-width: 76px;
    text-align: right;
    font-weight: 600;
    font-size: 12.5px;
    letter-spacing: .04em;
}

.res.pass { color: var(--pass); }
.res.fail { color: var(--fail); }
.res.det { color: var(--det); }
.res.warn { color: var(--warn); }

.section-dark .res.pass,
.terminal .res.pass { color: #4ADE80; }
.section-dark .res.det,
.terminal .res.det { color: #F87171; }

.mock-tag {
    display: inline-block;
    padding: 2px 8px;
    border: 1px dashed currentColor;
    border-radius: 4px;
    font: 500 10.5px/1.6 var(--mono);
    letter-spacing: .06em;
    text-transform: uppercase;
    color: #F5B544;
    white-space: nowrap;
}

.mock-tag-inline,
.mock-tag-block {
    color: var(--warn);
}

.mock-tag-inline {
    margin-left: 6px;
    padding: 0 6px;
    font-size: 9.5px;
}

.mock-tag-block {
    margin-bottom: 16px;
    white-space: normal;
}

/* Reveal animation for result rows */
[data-animate].armed .term-body .tr,
[data-animate].armed .term-body .ti-group {
    opacity: 0;
    transform: translateY(4px);
    transition: opacity .35s ease, transform .35s ease;
}

[data-animate].armed.in .term-body .tr,
[data-animate].armed.in .term-body .ti-group {
    opacity: 1;
    transform: none;
}

/* Signals */
.signals {
    margin-top: 88px;
}

.signals h3 {
    font-size: 22px;
    font-weight: 600;
    color: #fff;
}

.signal-groups {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    margin-top: 28px;
    border: 1px solid var(--dark-line);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.sg {
    padding: 22px 20px;
    background: var(--dark-2);
}

.sg + .sg {
    border-left: 1px solid var(--dark-line);
}

.sg h4 {
    margin-bottom: 14px;
    font-size: 11.5px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: #B9A2FB;
}

.sg ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.sg li {
    padding: 5px 0;
    font-size: 14px;
    color: var(--dark-ink);
}

.src-tag {
    font: 600 12px/1 var(--mono);
    text-transform: uppercase;
    letter-spacing: .08em;
    color: #fff;
}

/* Atlas */
.atlas-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 48px;
}

.atlas-grid h3,
.inspect h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 18px;
}

.catalog-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0 24px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.catalog-list li {
    padding: 9px 0;
    border-bottom: 1px solid var(--line);
    font-size: 15px;
}

.subjects-title {
    margin: 32px 0 10px;
    font-size: 11.5px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: var(--muted);
}

.subjects {
    margin: 0;
    font-size: 13px;
    line-height: 1.9;
    color: var(--ink-2);
}

.evidence {
    padding: 28px;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-lg);
    background: var(--surface);
    align-self: start;
}

.evidence > p {
    color: var(--ink-2);
}

.evidence-list {
    margin: 20px 0 0;
}

.evidence-list > div {
    display: grid;
    grid-template-columns: 110px 1fr;
    gap: 12px;
    align-items: baseline;
    padding: 12px 0;
    border-top: 1px solid var(--line);
}

.evidence-list dd {
    margin: 0;
    font-size: 14.5px;
    color: var(--ink-2);
}

.ev {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font: 600 11px/1.6 var(--mono);
    text-transform: uppercase;
    letter-spacing: .06em;
    white-space: nowrap;
}

.ev-verified { background: #DCFCE7; color: #166534; }
.ev-observed { background: #E0F2FE; color: #075985; }
.ev-inferred { background: #FEF3C7; color: #92400E; }
.ev-unknown { background: #EDEDEA; color: #52565E; }

.inspect {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 56px;
    align-items: center;
    margin-top: 88px;
    padding-top: 64px;
    border-top: 1px solid var(--line);
}

.inspect-copy p:not(.eyebrow) {
    font-size: 17px;
    color: var(--ink-2);
}

.terminal-light {
    border-color: var(--line-strong);
    background: var(--surface);
    box-shadow: 0 24px 60px -36px rgba(10, 11, 13, .35);
}

.terminal-light .term-bar {
    background: var(--bg);
    border-bottom-color: var(--line);
}

.terminal-light .tr > span:first-child {
    color: var(--ink);
}

.terminal-light .mock-tag {
    color: var(--warn);
}

.inspect-input {
    font-size: 13.5px;
    padding: 4px 10px;
    border: 1px solid var(--line-strong);
    border-radius: 6px;
    background: var(--surface);
}

.ti-group {
    margin-top: 12px;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: var(--muted);
}

.ti-group:first-child {
    margin-top: 4px;
}

/* Journey */
.journey-head {
    max-width: 720px;
    margin-bottom: 36px;
}

.journey-head h2 {
    font-size: clamp(24px, 3vw, 32px);
}

.journey {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 12px;
    list-style: none;
    margin: 0;
    padding: 0;
    counter-reset: j;
}

.journey li {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 18px;
    border: 1px solid var(--line-strong);
    border-left: 3px solid var(--accent);
    border-radius: var(--radius);
    background: var(--surface);
    font-weight: 500;
}

.journey li:not(:last-child)::after {
    content: "→";
    position: absolute;
    right: -11px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1;
    font-size: 14px;
    color: var(--muted);
    background: var(--bg-alt);
    line-height: 1;
}

.j-n {
    font-size: 11.5px;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: var(--accent-ink);
}

/* Differentiators */
.diff-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.diff {
    padding: 26px;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-lg);
    background: var(--surface);
}

.diff-wide {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 12px 40px;
    align-items: center;
}

.diff h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
}

.diff p {
    margin: 0;
    font-size: 15px;
    color: var(--ink-2);
}

.diag {
    display: grid;
    grid-template-columns: 0.6fr 1.4fr;
    gap: 16px;
    align-items: stretch;
}

.diag-col {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.diag-label {
    font-size: 11.5px;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--muted);
}

.diag-box {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 10px 16px;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius);
    background: var(--bg);
    font-size: 13px;
}

.diag-col:first-child .diag-box {
    align-items: center;
    color: var(--muted);
}

.diag-col:first-child .res {
    min-width: 0;
    text-align: center;
}

/* Example configuration */
.example {
    padding: 28px;
    border: 1px dashed var(--line-strong);
    border-radius: var(--radius-lg);
}

.example-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.example-card {
    padding: 20px 22px;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius);
    background: var(--surface);
    font-size: 13.5px;
}

.ec-k {
    display: block;
    margin-bottom: 10px;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: .1em;
    color: var(--muted);
}

.ec-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.ec-list li {
    padding: 7px 0;
    border-bottom: 1px dashed var(--line);
    color: var(--ink-2);
}

.ec-list li:last-child {
    border-bottom: 0;
}

.ec-list strong {
    color: var(--ink);
    font-weight: 600;
}

/* Audience */
.audience {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 0;
    list-style: none;
    margin: 0;
    padding: 0;
    border-top: 1px solid var(--line-strong);
    border-left: 1px solid var(--line-strong);
}

.audience li {
    padding: 22px 20px;
    min-height: 96px;
    border-right: 1px solid var(--line-strong);
    border-bottom: 1px solid var(--line-strong);
    background: var(--surface);
    font-weight: 500;
    font-size: 15px;
}

/* About */
.about {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 48px;
}

.about h2 {
    font-size: clamp(26px, 3vw, 34px);
}

.about-copy p {
    font-size: 17px;
    color: var(--ink-2);
}

/* Waitlist */
.waitlist {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 72px;
    align-items: start;
}

.waitlist h2 {
    margin-bottom: 20px;
    color: #fff;
}

.waitlist-copy p:not(.status-pill) {
    font-size: 17px;
}

.status-pill-dark {
    background: var(--dark-2);
    border-color: var(--dark-line);
    color: var(--dark-ink);
}

.wl-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
    padding: 28px;
    border: 1px solid var(--dark-line);
    border-radius: var(--radius-lg);
    background: var(--dark-2);
}

.field {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin: 0;
    padding: 0;
    border: 0;
    min-width: 0;
}

.field > span,
.field legend {
    padding: 0;
    margin-bottom: 0;
    font-size: 14px;
    font-weight: 500;
    color: var(--dark-ink);
}

.field legend {
    margin-bottom: 8px;
}

.field em {
    font-style: normal;
    font-weight: 400;
    color: var(--dark-muted);
    margin-left: 4px;
    font-size: 13px;
}

.field input {
    height: 44px;
    padding: 0 14px;
    border: 1px solid var(--dark-line);
    border-radius: 8px;
    background: var(--dark);
    color: #fff;
    font: 15px var(--sans);
}

.field input::placeholder {
    color: #5C626C;
}

.field input:focus,
.seg input:focus-visible + span,
.check input:focus-visible {
    outline: 2px solid var(--probe);
    outline-offset: 1px;
}

.field input[aria-invalid="true"] {
    border-color: #F87171;
}

.seg {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
}

.seg label {
    position: relative;
}

.seg input {
    position: absolute;
    opacity: 0;
    inset: 0;
    cursor: pointer;
}

.seg span {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 40px;
    border: 1px solid var(--dark-line);
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--dark-muted);
    transition: all .15s;
}

.seg input:checked + span {
    color: #fff;
    border-color: #6B7079;
    background: var(--dark-3);
}

.check {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    font-size: 14px;
    color: var(--dark-ink);
    cursor: pointer;
}

.check input {
    margin-top: 4px;
    width: 16px;
    height: 16px;
    accent-color: var(--probe);
    flex: none;
}

.check .muted {
    color: var(--dark-muted);
}

.hp {
    position: absolute;
    left: -10000px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.wl-form .btn-primary {
    background: #fff;
    color: var(--ink);
}

.wl-form .btn-primary:hover {
    background: #E4E4E0;
}

.wl-form .btn-primary:disabled {
    opacity: .6;
    cursor: default;
}

.form-status {
    min-height: 1.4em;
    margin: 0;
    font-size: 14px;
}

.form-status.ok { color: #4ADE80; }
.form-status.err { color: #F87171; }

/* Footer */
.site-footer {
    padding: 56px 0 40px;
    background: var(--dark);
    color: var(--dark-muted);
    border-top: 1px solid var(--dark-line);
}

.footer-inner {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 24px 48px;
}

.footer-brand .brand-name {
    color: #fff;
}

.footer-brand p {
    max-width: 520px;
    margin: 8px 0 0;
    font-size: 14px;
}

.footer-nav {
    display: flex;
    gap: 20px;
    font-size: 14px;
}

.footer-nav a {
    text-decoration: none;
}

.footer-nav a:hover {
    color: #fff;
}

.footer-meta {
    grid-column: 1 / -1;
    margin: 16px 0 0;
    padding-top: 24px;
    border-top: 1px solid var(--dark-line);
    font-size: 12.5px;
}

/* Responsive */
@media (max-width: 1020px) {
    .site-nav { display: none; }
    .header-inner { justify-content: space-between; }
    .platform-layout,
    .split,
    .probe-layout,
    .atlas-grid,
    .inspect,
    .waitlist,
    .about {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .split-reverse .split-copy { order: 0; }
    .signal-groups { grid-template-columns: repeat(2, 1fr); }
    .sg + .sg { border-left: 0; }
    .sg { border-bottom: 1px solid var(--dark-line); }
    .diff-grid { grid-template-columns: 1fr 1fr; }
    .diff-wide { grid-template-columns: 1fr; }
    .audience { grid-template-columns: repeat(2, 1fr); }
    .journey { grid-template-columns: 1fr; }
    .journey li:not(:last-child)::after { content: "↓"; right: auto; left: 50%; top: auto; bottom: -11px; transform: translateX(-50%); }
    .example-grid { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
    .container { padding: 0 16px; }
    .section { padding: 80px 0; }
    .section-tight { padding: 64px 0; }
    .hero { padding: 64px 0 56px; }
    .hero h1 br { display: none; }
    .product-strip { grid-template-columns: 1fr 1fr; }
    .product-tile:nth-child(3) { border-left: 0; }
    .product-tile:nth-child(n+3) { border-top: 1px solid var(--line); }
    .product-tile { padding: 18px; }
    .pt-name { font-size: 22px; }
    .qa-row { grid-template-columns: 1fr; gap: 4px; }
    .arch { padding: 28px 14px 20px; }
    .arch-node { min-width: 0; padding: 10px 12px; }
    .config-spec li { grid-template-columns: 1fr; gap: 0; }
    .catalog-list { grid-template-columns: 1fr; }
    .signal-groups { grid-template-columns: 1fr; }
    .diff-grid { grid-template-columns: 1fr; }
    .diag { grid-template-columns: 1fr; }
    .audience { grid-template-columns: 1fr; }
    .audience li { min-height: 0; padding: 16px; }
    .evidence-list > div { grid-template-columns: 1fr; gap: 6px; }
    .evidence, .wl-form, .example { padding: 20px; }
    .tr { flex-wrap: wrap; gap: 4px 10px; }
    .src { order: 3; }
    .term-bar { flex-wrap: wrap; }
    .seg { grid-template-columns: 1fr 1fr; }
    .footer-inner { grid-template-columns: 1fr; }
    .footer-nav { flex-wrap: wrap; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* Two perspectives */
.section-head-center {
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 40px;
    text-align: center;
}

.persp {
    display: grid;
    grid-template-columns: 1fr 120px 1fr;
    align-items: stretch;
}

.persp-panel {
    display: flex;
    flex-direction: column;
    padding: 28px;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-lg);
    background: var(--surface);
}

.persp-k {
    margin: 0 0 10px;
    font-size: 11.5px;
    text-transform: uppercase;
    letter-spacing: .1em;
    color: var(--muted);
}

.persp-panel h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 16px;
}

.persp-list {
    list-style: none;
    margin: 0 0 24px;
    padding: 0;
}

.persp-list li {
    position: relative;
    padding: 8px 0 8px 22px;
    border-top: 1px solid var(--line);
    font-size: 15px;
    color: var(--ink-2);
}

.persp-list li::before {
    content: "?";
    position: absolute;
    left: 0;
    font: 600 13px/1.75 var(--mono);
    color: var(--muted);
}

.persp-links {
    display: flex;
    gap: 8px;
    margin-top: auto;
}

.persp-links a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 5px 12px;
    border: 1px solid var(--line-strong);
    border-radius: 6px;
    font: 600 13px/1.4 var(--mono);
    text-decoration: none;
    transition: border-color .15s;
}

.persp-links a::before {
    content: "";
    width: 8px;
    height: 8px;
    border-radius: 2px;
    background: var(--accent);
}

.persp-links a:hover {
    border-color: var(--ink);
}

.persp-mid {
    display: flex;
    align-items: center;
    justify-content: center;
}

.pm-line {
    flex: 1;
    height: 1px;
    border-top: 1px dashed var(--ink-2);
}

.pm-node {
    padding: 8px 6px;
    border: 1px solid var(--ink);
    border-radius: 6px;
    background: var(--ink);
    color: #fff;
    font-size: 10px;
    line-height: 1.3;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: .06em;
}

.persp-foot {
    max-width: 760px;
    margin: 36px auto 0;
    text-align: center;
}

.persp-statement {
    font-size: 18px;
    font-weight: 500;
    color: var(--ink);
    margin-bottom: 14px;
}

.persp-asks {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 6px 28px;
    font-size: 13px;
    color: var(--muted);
}

.persp-asks strong {
    color: var(--ink);
    font-weight: 600;
}

/* Journeys */
.journeys {
    margin-top: 64px;
    padding-top: 40px;
    border-top: 1px solid var(--line-strong);
}

.journeys-note {
    font-size: 15px;
    color: var(--muted);
    margin-bottom: 20px;
}

.journey-row {
    display: grid;
    grid-template-columns: 150px 1fr;
    gap: 16px;
    align-items: center;
}

.journey-row + .journey-row {
    margin-top: 12px;
}

.jr-label {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .08em;
}

.journey li {
    padding: 14px 16px;
    font-size: 14.5px;
}

.journey li.j-repeat {
    border-left: 3px dashed var(--line-strong);
}

.j-repeat .j-n {
    color: var(--muted);
}

/* Labs */
.flow-h {
    display: grid;
    grid-template-columns: 1fr 28px 1fr 28px 1fr 28px 1fr;
    align-items: stretch;
}

.flow-h .flow-arrow {
    align-self: center;
    height: 0;
    margin: 0;
    border-left: 0;
    border-top: 1px dashed var(--ink-2);
}

.flow-h .flow-arrow::after {
    left: auto;
    right: -1px;
    bottom: -4.5px;
    border: 4px solid transparent;
    border-left: 5px solid var(--ink-2);
    border-right: 0;
}

.flow-h .flow-step {
    grid-template-columns: 28px 1fr;
    align-content: start;
}

.flow-h .cfg-dots {
    grid-template-columns: repeat(12, 1fr);
    gap: 3px;
}

.sides {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    margin-top: 64px;
}

.side h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 14px;
}

.side > p:not(.persp-k):not(.verify-note) {
    font-size: 16px;
    color: var(--ink-2);
}

.side-report {
    margin-top: 20px;
}

.verify-note {
    margin: 14px 0 0;
    font-size: 13px;
    color: var(--muted);
}

.verify-note .mono {
    margin-right: 6px;
    padding: 1px 6px;
    border: 1px solid var(--line-strong);
    border-radius: 4px;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--ink-2);
}

/* Outcome and coverage labels (neutral: neither side "wins") */
.res.out-blocked { color: var(--ink-2); }
.res.out-challenged { color: var(--warn); }
.res.out-allowed { color: var(--atlas-ink); }
.res.cov-strong { color: var(--pass); }
.res.cov-medium { color: var(--warn); }
.res.cov-weak { color: var(--fail); }
.res.cov-none { color: var(--muted); }

.section-dark .res.out-blocked { color: #C9CDD3; }
.section-dark .res.out-challenged,
.section-dark .res.cov-medium { color: #F5B544; }
.section-dark .res.out-allowed { color: #7CC8F2; }
.section-dark .res.cov-strong { color: #4ADE80; }
.section-dark .res.cov-weak { color: #FB923C; }
.section-dark .res.cov-none { color: var(--dark-muted); }

.terminal .res {
    min-width: 92px;
}

.section-dark .ti-group {
    color: var(--dark-muted);
}

/* Probe */
.h2-alt {
    display: block;
    color: var(--dark-muted);
}

#probe > .container > .section-head {
    max-width: 880px;
}

#probe .probe-layout {
    align-items: start;
}

.tabs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    max-width: 640px;
    margin-bottom: 32px;
    padding: 4px;
    border: 1px solid var(--dark-line);
    border-radius: var(--radius-lg);
    background: var(--dark-2);
}

.tab {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 12px 16px;
    border: 1px solid transparent;
    border-radius: var(--radius);
    background: transparent;
    color: var(--dark-muted);
    font-family: var(--sans);
    text-align: left;
    cursor: pointer;
    transition: background .15s, border-color .15s, color .15s;
}

.tab:hover {
    color: var(--dark-ink);
}

.tab[aria-selected="true"] {
    border-color: rgba(139, 92, 246, .6);
    background: linear-gradient(180deg, rgba(139, 92, 246, .16), rgba(139, 92, 246, .05));
    color: #fff;
}

.tab:focus-visible {
    outline: 2px solid var(--probe);
    outline-offset: 2px;
}

.tab-t {
    font-size: 15px;
    font-weight: 600;
}

.tab-q {
    font: 12px/1.5 var(--mono);
    opacity: .8;
}

.panel-note {
    margin: 24px 0 0;
    font-size: 14px;
}

/* Atlas */
.catalog-cols {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

.atlas-grid .catalog-cols h3 {
    font-size: 17px;
    margin-bottom: 8px;
}

.catalog-cols .catalog-list {
    grid-template-columns: 1fr;
}

.subjects + .subjects {
    margin-top: 10px;
}

.matrix-block {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 56px;
    align-items: center;
    margin-top: 88px;
    padding-top: 64px;
    border-top: 1px solid var(--line);
}

.matrix-copy h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 14px;
}

.matrix-copy > p:not(.fineprint) {
    font-size: 17px;
    color: var(--ink-2);
}

.matrix {
    margin: 0;
    padding: 20px 24px 24px;
    border: 1px dashed var(--line-strong);
    border-radius: var(--radius-lg);
    background: var(--surface);
    overflow-x: auto;
}

.matrix table {
    width: 100%;
    border-collapse: collapse;
    font-family: var(--mono);
    font-size: 13px;
}

.matrix th,
.matrix td {
    padding: 10px 8px;
    border-bottom: 1px solid var(--line);
}

.matrix thead th {
    font-weight: 600;
    font-size: 12px;
    letter-spacing: .06em;
    color: var(--atlas-ink);
    text-align: center;
}

.matrix thead .mx-axis {
    text-align: left;
    font-weight: 500;
    font-size: 10.5px;
    text-transform: uppercase;
    color: var(--muted);
}

.matrix tbody th {
    text-align: left;
    font-weight: 500;
    color: var(--ink);
    white-space: nowrap;
}

.matrix tbody tr:last-child > * {
    border-bottom: 0;
}

.matrix td {
    text-align: center;
}

.matrix td i {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: 1.5px solid var(--line-strong);
}

.matrix tbody tr:hover td i {
    border-color: var(--atlas);
}

.inspect-motto {
    font-size: 15px;
    font-weight: 600;
    color: var(--atlas-ink);
}

.inspect-copy p.inspect-motto {
    font-size: 15px;
    color: var(--atlas-ink);
}

/* Why: the connection */
.conn {
    display: grid;
    grid-template-columns: 1fr 1.1fr 1fr;
    margin-bottom: 16px;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-lg);
    background: var(--surface);
    overflow: hidden;
}

.conn > div {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 24px 26px;
}

.conn-side + .conn-mid,
.conn-mid + .conn-side {
    border-left: 1px solid var(--line-strong);
}

.conn-mid {
    background: var(--ink);
    color: #fff;
    text-align: center;
}

.conn-k {
    font-size: 11.5px;
    text-transform: uppercase;
    letter-spacing: .1em;
    color: var(--muted);
}

.conn-mid .conn-k {
    color: #7DD3C0;
}

.conn-q {
    font-size: 18px;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.conn-side:last-child {
    text-align: right;
}

.diff-grid {
    grid-template-columns: repeat(3, 1fr);
}

/* Audience */
.audience-cols {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

.aud-k {
    margin-bottom: 14px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .1em;
    color: var(--muted);
}

.audience-cols .audience {
    grid-template-columns: 1fr 1fr;
}

.audience-cols .audience li {
    min-height: 0;
    padding: 16px 18px;
}

/* Waitlist additions */
.seg-3 {
    grid-template-columns: repeat(3, 1fr);
}

.seg-interest {
    grid-template-columns: repeat(6, 1fr);
}

.seg-interest label {
    grid-column: span 2;
}

.seg-interest .seg-wide {
    grid-column: span 3;
}

.seg span {
    padding: 0 8px;
    text-align: center;
    line-height: 1.2;
}

@media (max-width: 1020px) {
    .persp { grid-template-columns: 1fr; }
    .persp-mid { flex-direction: column; height: 72px; }
    .pm-line { flex: 1; width: 0; height: auto; border-top: 0; border-left: 1px dashed var(--ink-2); }
    .flow-h { display: flex; flex-direction: column; }
    .flow-h .flow-arrow { align-self: auto; height: 24px; margin-left: 29px; border-top: 0; border-left: 1px dashed var(--ink-2); }
    .flow-h .flow-arrow::after { left: -4.5px; right: auto; bottom: 0; border: 4px solid transparent; border-top: 5px solid var(--ink-2); border-bottom: 0; }
    .flow-h .cfg-dots { grid-template-columns: repeat(20, 1fr); }
    .sides,
    .matrix-block { grid-template-columns: 1fr; gap: 40px; }
    .conn { grid-template-columns: 1fr; }
    .diff-grid { grid-template-columns: 1fr; }
    .conn-side + .conn-mid,
    .conn-mid + .conn-side { border-left: 0; border-top: 1px solid var(--line-strong); }
    .conn > div,
    .conn-side:last-child { text-align: center; }
    .journey-row { grid-template-columns: 1fr; gap: 10px; }
    .audience-cols { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
    .persp-panel { padding: 20px; }
    .persp-links { flex-wrap: wrap; }
    .tabs { grid-template-columns: 1fr 1fr; }
    .tab { padding: 10px 12px; }
    .catalog-cols { grid-template-columns: 1fr; gap: 24px; }
    .audience-cols .audience { grid-template-columns: 1fr; }
    .seg-3,
    .seg-interest { grid-template-columns: 1fr; }
    .seg-interest label,
    .seg-interest .seg-wide { grid-column: auto; }
    .matrix { padding: 16px; }
    .terminal .res { min-width: 0; }
}

/* Probe: cross-vendor benchmarking */
.section-sub + .section-sub {
    margin-top: 12px;
}

.probe-sub {
    margin-top: 88px;
}

.probe-sub-head {
    max-width: 720px;
    margin-bottom: 32px;
}

.probe-sub-head h3 {
    font-size: clamp(24px, 3vw, 30px);
    font-weight: 600;
    color: #fff;
    margin-bottom: 12px;
}

.probe-sub-head p {
    margin: 0;
    font-size: 17px;
}

.bench-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}

.cov-box {
    border: 1px solid var(--dark-line);
    border-radius: var(--radius-lg);
    background: var(--dark-2);
    overflow: hidden;
}

.cov-list {
    list-style: none;
    margin: 0;
    padding: 8px 18px 12px;
}

.cov-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    padding: 9px 0;
    border-bottom: 1px dashed rgba(127, 127, 127, .22);
    font-size: 15px;
    color: var(--dark-ink);
}

.cov-list li:last-child {
    border-bottom: 0;
}

.plan-tag {
    padding: 1px 8px;
    border: 1px solid var(--dark-line);
    border-radius: 4px;
    font-size: 10.5px;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--dark-muted);
    white-space: nowrap;
}

.fan {
    margin: 0;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.fan-cap {
    margin-bottom: 20px;
    font-size: 15px;
    color: var(--dark-muted);
}

.fan-cap strong {
    display: block;
    margin-bottom: 6px;
    font-size: 17px;
    font-weight: 600;
    color: #fff;
}

.hz-node {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: 12px 14px;
    border: 1px solid var(--dark-line);
    border-radius: var(--radius);
    background: var(--dark-2);
    color: var(--dark-ink);
    font-size: 13.5px;
    text-align: center;
}

.hz-node small {
    font-size: 12px;
    color: var(--dark-muted);
}

.hz-strong {
    min-width: 200px;
    border-color: rgba(139, 92, 246, .6);
    background: linear-gradient(180deg, rgba(139, 92, 246, .16), rgba(139, 92, 246, .05));
    color: #fff;
    font-weight: 600;
}

.targets {
    margin-top: 40px;
}

.section-dark .subjects-title {
    color: var(--dark-muted);
}

.target-groups {
    margin: 0;
    border-top: 1px solid var(--dark-line);
}

.target-groups > div {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 16px;
    padding: 12px 0;
    border-bottom: 1px solid var(--dark-line);
}

.target-groups dt {
    font-size: 11.5px;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: #B9A2FB;
    padding-top: 3px;
}

.target-groups dd {
    margin: 0;
    font: 13.5px/1.8 var(--mono);
    color: var(--dark-ink);
}

.section-dark .fineprint {
    color: var(--dark-muted);
}

.ps {
    display: grid;
    grid-template-columns: 0.85fr 1.15fr;
    gap: 40px;
    align-items: center;
}

.ps-k {
    display: block;
    margin-bottom: 12px;
    font-size: 11.5px;
    text-transform: uppercase;
    letter-spacing: .1em;
    color: #B9A2FB;
}

.ps-plus {
    font-size: 24px;
    line-height: 1;
    color: var(--dark-muted);
}

.chips-dark span {
    border-color: var(--dark-line);
    background: var(--dark-2);
    color: var(--dark-ink);
}

.matrix-dark {
    border-color: var(--dark-line);
    background: var(--dark-2);
}

.matrix-dark th,
.matrix-dark td {
    border-bottom-color: var(--dark-line);
}

.matrix-dark thead th {
    color: #B9A2FB;
}

.matrix-dark tbody th {
    color: var(--dark-ink);
}

.matrix-dark td i {
    border-color: #4B515B;
}

.matrix-dark tbody tr:hover td i {
    border-color: var(--probe);
}

.section-dark .mock-tag-block,
.section-dark .mock-tag-inline {
    color: #F5B544;
}

.cov-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.cov-card {
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 24px;
    border: 1px solid var(--dark-line);
    border-radius: var(--radius-lg);
    background: var(--dark-2);
}

.cov-card-real {
    border-color: rgba(139, 92, 246, .45);
}

.cov-card p {
    margin: 0;
    font-size: 15px;
}

.cov-card ul {
    margin: 0;
    padding-left: 18px;
    font-size: 14px;
    color: var(--dark-ink);
}

.cov-card li {
    padding: 2px 0;
}

.cc-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}

.real-tag {
    padding: 2px 8px;
    border-radius: 4px;
    background: rgba(139, 92, 246, .18);
    color: #CDBDFD;
    font-size: 10.5px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .06em;
}

.cov-card .cc-small {
    font-size: 13px;
}

.cc-example {
    margin-top: auto;
    padding: 10px 14px;
    border: 1px dashed var(--dark-line);
    border-radius: var(--radius);
    font-size: 13px;
    color: var(--dark-ink);
}

.cc-example .mock-tag-inline {
    margin: 0 0 4px;
}

.outcomes {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: auto;
}

.outcomes span {
    padding: 2px 8px;
    border: 1px solid var(--dark-line);
    border-radius: 4px;
    font-size: 11px;
    letter-spacing: .06em;
    color: var(--dark-ink);
}

.sources-key {
    color: #fff;
    font-weight: 600;
}

.src-group-k {
    margin: 0 0 12px;
    font-size: 11.5px;
    text-transform: uppercase;
    letter-spacing: .1em;
    color: #B9A2FB;
}

.cov-cards + .src-group-k {
    margin-top: 32px;
}

.cov-cards-3 {
    grid-template-columns: repeat(3, 1fr);
}

.fan-list li.fan-g {
    margin-top: 14px;
    padding: 0 0 0 2px;
    border: 0;
    background: none;
    font-size: 10.5px;
    text-transform: uppercase;
    letter-spacing: .1em;
    color: #B9A2FB;
}

.fan-list li.fan-g:first-child {
    margin-top: 4px;
}

.fan-list li.fan-g::before {
    display: none;
}

.bench-side {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.bench-side .panel-note {
    margin: 0;
}

.ps-axes {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.fan-list {
    list-style: none;
    margin: 0 0 0 28px;
    padding: 6px 0 0;
    border-left: 1px dashed #4B515B;
}

.fan-list li {
    position: relative;
    margin: 6px 0;
    padding: 7px 12px;
    margin-left: 24px;
    border: 1px solid var(--dark-line);
    border-radius: 6px;
    background: var(--dark-2);
    font-size: 13px;
    color: var(--dark-ink);
}

.fan-list li::before {
    content: "";
    position: absolute;
    left: -25px;
    top: 50%;
    width: 24px;
    border-top: 1px dashed #4B515B;
}

.fan-list li.fan-ws {
    border-color: rgba(139, 92, 246, .45);
}

.fan-out {
    position: relative;
    height: 28px;
    margin-left: 28px;
    border-left: 1px dashed #4B515B;
}

.fan-out::after {
    content: "";
    position: absolute;
    left: -4.5px;
    bottom: 0;
    border: 4px solid transparent;
    border-top: 5px solid #4B515B;
    border-bottom: 0;
}

.netc {
    font-size: 12.5px;
    color: #7CC8F2;
}

/* Atlas <-> Probe loop */
.loop-block {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 56px;
    align-items: center;
    margin-top: 88px;
    padding-top: 64px;
    border-top: 1px solid var(--line);
}

.loop {
    display: flex;
    flex-direction: column;
    gap: 28px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.loop li {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 16px 18px;
    border: 1px solid var(--line-strong);
    border-left: 3px solid var(--accent);
    border-radius: var(--radius);
    background: var(--surface);
    font-weight: 500;
}

.loop li:not(:last-child)::after {
    content: "↓";
    position: absolute;
    left: 24px;
    bottom: -25px;
    font-size: 14px;
    color: var(--muted);
}

.diff-grid {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1020px) {
    .bench-grid,
    .loop-block,
    .cov-cards { grid-template-columns: 1fr; gap: 32px; }
    .ps { grid-template-columns: 1fr; }
    .diff-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 680px) {
    .probe-sub { margin-top: 64px; }
    .target-groups > div { grid-template-columns: 1fr; gap: 4px; }
    .cov-card { padding: 20px; }
    .cov-cards-3 { grid-template-columns: 1fr; }
    .diff-grid { grid-template-columns: 1fr; }
    .fan-list li { margin-left: 16px; }
    .fan-list li::before { left: -17px; width: 16px; }
}

@media (max-width: 680px) {
    .matrix th,
    .matrix td { padding: 8px 3px; }
    .matrix table { font-size: 11.5px; }
    .matrix thead th { font-size: 10px; letter-spacing: 0; }
    .matrix thead .mx-axis { font-size: 8.5px; }
}