/* ATKLAB website — implements atklab/style-guide (main brand).
   Greyscale + Signal Red as the sole accent. 0 corner radius everywhere. */

:root {
  --ink: #0d0d0d;
  --true-black: #000000;
  --signal-red: #c8272c;
  --paper-white: #ffffff;
  --steel: #d8d8d8;
  --slate: #8f8f8f;
  --iron: #3a3a3a;
  --panel: #181818;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-6: 24px;
  --space-8: 32px;
  --space-12: 48px;
  --space-16: 64px;

  --measure: 68ch;
}

@font-face {
  font-family: "Roboto";
  src: url("../fonts/Roboto-Variable.ttf") format("truetype");
  font-weight: 100 900;
  font-display: swap;
}

* {
  box-sizing: border-box;
  border-radius: 0 !important; /* sharp corners are a brand rule, no exceptions */
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--steel);
  font-family: "Roboto", sans-serif;
  font-size: 17px;
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;
}

/* Grow the main content so the footer sits at the bottom on short pages. */
main {
  flex: 1 0 auto;
}

::selection {
  background: var(--signal-red);
  color: var(--paper-white);
}

h1, h2, h3, h4 {
  color: var(--paper-white);
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 var(--space-4);
}

h1 {
  font-size: clamp(2.1rem, 5.5vw, 3.4rem);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

h2 {
  font-size: 1.45rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

h3 {
  font-size: 1.1rem;
}

p {
  max-width: var(--measure);
}

a {
  color: var(--signal-red);
  text-decoration: none;
}

a:hover,
a:focus-visible {
  text-decoration: underline;
  text-underline-offset: 3px;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--signal-red);
  outline-offset: 2px;
}

code, pre {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.88em;
}

code {
  background: var(--true-black);
  border: 1px solid var(--iron);
  padding: 1px 5px;
  color: var(--steel);
}

pre {
  background: var(--true-black);
  border: 1px solid var(--iron);
  padding: var(--space-4);
  overflow-x: auto;
  line-height: 1.55;
}

pre code {
  background: none;
  border: 0;
  padding: 0;
}

.prompt {
  color: var(--signal-red);
  user-select: none;
}

.wrap {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* Kicker — red tracked label above section headings */
.kicker {
  display: block;
  color: var(--signal-red);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}

.accent-line {
  width: 48px;
  height: 2px;
  background: var(--signal-red);
  border: 0;
  margin: var(--space-4) 0 var(--space-6);
}

/* ------------------------------------------------------------------ nav */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(13, 13, 13, 0.92);
  border-bottom: 1px solid var(--iron);
  backdrop-filter: blur(4px);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.wordmark {
  display: inline-flex;
  color: var(--paper-white);
}

.wordmark:hover {
  text-decoration: none;
}

.wordmark-logo {
  display: block;
  height: 18px;
  aspect-ratio: 220 / 44;
  background-color: currentColor;
  -webkit-mask: url("../assets/atklab-line.svg") no-repeat center / contain;
  mask: url("../assets/atklab-line.svg") no-repeat center / contain;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.site-nav a {
  color: var(--slate);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--paper-white);
  text-decoration: none;
}

.site-nav a.active {
  color: var(--paper-white);
  border-bottom: 2px solid var(--signal-red);
}

.site-nav a.lang-switch {
  display: flex;
  align-items: center;
  letter-spacing: normal;
  text-transform: none;
}

.lang-flag {
  display: block;
  width: 24px;
  height: 16px;
  position: relative;
  top: -2px;
}

/* ------------------------------------------------------------------ hero */

.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--iron);
  background:
    radial-gradient(ellipse 90% 70% at 20% 0%, #1c1c1c, transparent 60%),
    var(--ink);
}

.hero-dither {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  image-rendering: pixelated;
  opacity: 0.9;
}

.hero .wrap {
  position: relative;
  padding-top: clamp(72px, 14vh, 140px);
  padding-bottom: clamp(72px, 14vh, 140px);
}

.hero p.lede {
  font-size: 1.15rem;
  color: var(--steel);
  max-width: 54ch;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-8);
}

/* --------------------------------------------------------------- buttons */

.btn {
  display: inline-block;
  padding: 12px 24px;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  cursor: pointer;
}

.btn-primary {
  background: var(--signal-red);
  color: var(--paper-white);
  border: 1px solid var(--signal-red);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: #a91f24;
  border-color: #a91f24;
  text-decoration: none;
}

.btn-secondary {
  background: transparent;
  color: var(--steel);
  border: 1px solid var(--steel);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  color: var(--paper-white);
  border-color: var(--paper-white);
  text-decoration: none;
}

/* -------------------------------------------------------------- sections */

section {
  padding: var(--space-16) 0;
  border-bottom: 1px solid var(--iron);
  /* Anchor jumps land below the sticky nav (64px + its 1px border). */
  scroll-margin-top: 65px;
}

section:last-of-type {
  border-bottom: 0;
}

/* ----------------------------------------------------------------- cards */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
  margin-top: var(--space-8);
}

.card {
  background: var(--panel);
  border: 1px solid var(--iron);
  padding: var(--space-6);
}

.card h3 {
  margin-bottom: var(--space-3);
}

.card p {
  color: var(--slate);
  font-size: 0.95rem;
  margin: 0;
}

.card .card-meta {
  display: block;
  color: var(--signal-red);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}

/* -------------------------------------------------------- severity badges */

.badge {
  display: inline-block;
  padding: 4px 10px;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
}

.badge-info     { border: 1px solid var(--iron); color: var(--slate); }
.badge-low      { background: var(--panel); border: 1px solid var(--panel); color: var(--steel); }
.badge-medium   { background: var(--iron); border: 1px solid var(--iron); color: var(--paper-white); }
.badge-high     { border: 1px solid var(--signal-red); color: var(--signal-red); }
.badge-critical { background: var(--signal-red); border: 1px solid var(--signal-red); color: var(--paper-white); }

/* --------------------------------------------------------- sample finding */

.finding {
  background: var(--panel);
  border: 1px solid var(--iron);
  border-left: 3px solid var(--signal-red);
  padding: var(--space-6);
  margin-top: var(--space-8);
}

.finding-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.finding-head h3 {
  margin: 0;
}

.finding pre {
  margin: var(--space-4) 0 0;
}

.finding p {
  color: var(--slate);
  font-size: 0.95rem;
  margin: 0;
}

/* --------------------------------------------------------------- process */

.steps {
  counter-reset: step;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-6);
  margin-top: var(--space-8);
  padding: 0;
  list-style: none;
}

.steps li {
  counter-increment: step;
  border-top: 2px solid var(--iron);
  padding-top: var(--space-4);
}

.steps li::before {
  content: "0" counter(step);
  display: block;
  color: var(--signal-red);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  margin-bottom: var(--space-2);
}

.steps h3 {
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.steps p {
  color: var(--slate);
  font-size: 0.92rem;
  margin: 0;
}

/* --------------------------------------------------- process input/output */

.io-cols {
  display: grid;
  grid-template-columns: 1fr 1px 1fr;
  margin-top: var(--space-8);
}

.io-rule { background: var(--iron); }

.io-col { padding: 0 var(--space-8); }
.io-col:first-child { padding-left: 0; }
.io-col:last-child { padding-right: 0; }

.io-label {
  display: block;
  color: var(--signal-red);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

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

.io-col li {
  color: var(--steel);
  font-size: 0.95rem;
  padding: var(--space-3) 0;
  border-top: 1px solid var(--iron);
}

.io-col li:first-of-type {
  border-top: 0;
  padding-top: 0;
}

@media (max-width: 640px) {
  .io-cols { grid-template-columns: 1fr; }
  .io-rule { height: 1px; margin: var(--space-6) 0; }
  .io-col,
  .io-col:first-child,
  .io-col:last-child { padding: 0; }
}

/* ---------------------------------------------------- traceability graph */

.graph-wrap {
  margin-top: var(--space-8);
  overflow-x: auto;
  border: 1px solid var(--iron);
  background:
    radial-gradient(ellipse 70% 90% at 75% 25%, #1c1c1c, transparent 60%),
    var(--true-black);
}

.graph {
  display: block;
  width: 100%;
  min-width: 660px;
  height: auto;
}

.graph .edge line {
  stroke: var(--iron);
  stroke-width: 1.5;
}

.graph .edge.crit line {
  stroke: var(--signal-red);
  stroke-opacity: 0.65;
}

.graph .edge.context line {
  stroke: var(--slate);
  stroke-opacity: 0.5;
  stroke-dasharray: 4 4;
}

.graph .elabel-bg { fill: var(--true-black); }

.graph #ah-n path { fill: var(--iron); }
.graph #ah-c path { fill: var(--signal-red); }
.graph #ah-x path { fill: var(--slate); }

.graph .edge text {
  fill: var(--slate);
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 11px;
  letter-spacing: 0.04em;
  text-anchor: middle;
  dominant-baseline: middle;
}

.graph .edge.crit text { fill: var(--signal-red); }

.graph .node { cursor: default; }

.graph .node rect {
  fill: var(--panel);
  stroke: var(--iron);
  stroke-width: 1.5;
  transition: stroke 0.15s ease, fill 0.15s ease;
}

.graph .node.crit rect { stroke: var(--signal-red); }

.graph .node text {
  fill: var(--steel);
  font-size: 13px;
  font-weight: 500;
  text-anchor: middle;
  dominant-baseline: middle;
  transition: fill 0.15s ease;
}

.graph .node.mono text,
.graph .node.endpoint text {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 12px;
}

.graph .node.crit text { fill: var(--paper-white); }

.graph .node text.ntype {
  fill: var(--paper-white);
  font-family: "Roboto", sans-serif;
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-anchor: middle;
  dominant-baseline: middle;
}

.graph .node.crit text.ntype { fill: var(--signal-red); }

.graph .ntype-bg { fill: var(--panel); }

.graph .node:hover rect {
  fill: var(--iron);
  stroke: var(--signal-red);
}

.graph .node:hover text { fill: var(--paper-white); }

.graph-legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
  margin-top: var(--space-4);
  color: var(--slate);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
}

.graph-legend span {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.graph-legend i {
  width: 14px;
  height: 14px;
  border: 1.5px solid var(--iron);
  background: var(--panel);
}

.graph-legend i.endpoint { background: var(--true-black); }
.graph-legend i.crit { border-color: var(--signal-red); }

/* ----------------------------------------------------- certificate verify */

.cert-verify { margin-top: var(--space-8); }

.cert-form {
  display: flex;
  gap: var(--space-4);
  max-width: 520px;
}

.cert-form input {
  flex: 1;
  min-width: 0;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  color: var(--paper-white);
  background: var(--true-black);
  border: 1px solid var(--iron);
  padding: 12px 14px;
}

.cert-form input:focus {
  outline: none;
  border-color: var(--signal-red);
  box-shadow: 0 0 0 1px var(--signal-red);
}

.cert-result { margin-top: var(--space-6); }

.cert-card {
  max-width: 720px;
  background: var(--panel);
  border: 1px solid var(--iron);
  border-left: 3px solid var(--signal-red);
  padding: var(--space-6);
}

.cert-card--empty {
  border-left-color: var(--iron);
  color: var(--slate);
}

.cert-card-head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.cert-client {
  color: var(--paper-white);
  font-weight: 700;
  font-size: 1.05rem;
}

.cert-badge {
  background: var(--signal-red);
  color: var(--paper-white);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 3px 10px;
}

.cert-id {
  margin-left: auto;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  color: var(--slate);
}

.cert-stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6) var(--space-8);
  margin: 0;
}

.cert-stat dt {
  color: var(--signal-red);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}

.cert-fn {
  font-size: 0.85em;
  font-weight: 700;
  vertical-align: super;
  margin-left: 2px;
  color: var(--signal-red);
}

.cert-stat dd {
  margin: 0;
  color: var(--steel);
}

.cert-stat .badge {
  font-size: 1rem;
  padding: 6px 14px;
  letter-spacing: 0.1em;
}

.cert-figure {
  display: block;
  color: var(--paper-white);
  font-size: 1.4rem;
  font-weight: 700;
  line-height: 1.2;
}

.cert-sub {
  color: var(--slate);
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0;
}

.cert-note {
  display: block;
  color: var(--slate);
  font-size: 0.8rem;
  margin-top: var(--space-2);
}

.cert-bar {
  display: block;
  width: 200px;
  max-width: 100%;
  height: 6px;
  background: var(--iron);
  margin-top: var(--space-3);
}

.cert-bar-fill {
  display: block;
  height: 100%;
  background: var(--signal-red);
}

.cert-hint {
  color: var(--slate);
  font-size: 0.82rem;
  margin-top: var(--space-4);
}

.cert-demo {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.85em;
  color: var(--steel);
  background: var(--true-black);
  border: 1px solid var(--iron);
  padding: 1px 6px;
  cursor: pointer;
}

.cert-demo:hover,
.cert-demo:focus-visible {
  color: var(--paper-white);
  border-color: var(--signal-red);
  outline: none;
}

@media (max-width: 520px) {
  .cert-form { flex-direction: column; }
}

/* --------------------------------------------------------------- contact */

.contact {
  background: var(--true-black);
}

.contact .wrap {
  text-align: center;
}

.contact p {
  margin-left: auto;
  margin-right: auto;
}

.contact-mail {
  display: inline-block;
  margin-top: var(--space-6);
  font-size: 1.05rem;
}

/* ------------------------------------------------------------------ blog */

.page-head {
  padding: var(--space-12) 0 var(--space-8);
  border-bottom: 1px solid var(--iron);
}

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

.post-list li {
  border-bottom: 1px solid var(--iron);
  padding: var(--space-8) 0;
}

.post-list h2 {
  text-transform: none;
  letter-spacing: 0;
  font-size: 1.35rem;
  margin-bottom: var(--space-2);
}

.post-list h2 a {
  color: var(--paper-white);
}

.post-list h2 a:hover {
  color: var(--signal-red);
  text-decoration: none;
}

.post-meta {
  display: block;
  color: var(--slate);
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}

.post-list p {
  color: var(--slate);
  margin: 0;
}

article.post {
  padding: var(--space-12) 0 var(--space-16);
}

article.post h1 {
  text-transform: none;
  letter-spacing: 0;
  font-size: clamp(1.7rem, 4vw, 2.4rem);
}

article.post h2 {
  margin-top: var(--space-12);
}

/* Section heading with a severity badge pushed to the right. */
.post-h2 {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-4);
}

.post-h2 .badge { flex: 0 0 auto; }

article.post pre {
  margin: var(--space-6) 0;
}

article.post ul,
article.post ol {
  max-width: var(--measure);
  padding-left: 1.4em;
}

article.post li {
  margin-bottom: var(--space-2);
}

article.post blockquote {
  border-left: 3px solid var(--signal-red);
  margin: var(--space-6) 0;
  padding: var(--space-2) var(--space-6);
  color: var(--slate);
}

/* ------------------------------------------------- risk severity matrix */

.table-scroll {
  overflow-x: auto;
  max-width: var(--measure);
  margin: var(--space-6) 0;
}

.risk-matrix {
  width: 100%;
  min-width: 460px;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.risk-matrix caption {
  text-align: left;
  color: var(--signal-red);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}

.risk-matrix th,
.risk-matrix td {
  border: 2px solid var(--ink);
  padding: var(--space-3) var(--space-4);
  text-align: center;
  white-space: nowrap;
}

.risk-matrix thead th,
.risk-matrix tbody th {
  background: var(--true-black);
  color: var(--slate);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.risk-matrix thead th:first-child {
  text-align: left;
  width: 1%;
}

.risk-matrix thead th:not(:first-child) {
  width: 33%;
}

.risk-matrix td {
  color: var(--paper-white);
  font-weight: 600;
}

/* Grey-to-red heat ramp: note is neutral, critical is full accent. */
.risk-matrix .sev-note     { background: var(--panel);   color: var(--slate); font-weight: 500; }
.risk-matrix .sev-low      { background: #3a1f21; color: var(--steel); }
.risk-matrix .sev-medium   { background: #6e2529; }
.risk-matrix .sev-high     { background: #a5262b; }
.risk-matrix .sev-critical { background: var(--signal-red); }

.back-link {
  color: var(--slate);
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* Keep the closing call-to-action link on one line. */
article.post a[href="/engage"] {
  white-space: nowrap;
}

/* ---------------------------------------------------------- engage funnel */

.funnel-bar {
  position: sticky;
  /* Nav is 64px tall plus its 1px bottom border; matching that avoids a 1px
     jump when the bar pins on scroll. */
  top: 65px;
  z-index: 9;
  background: rgba(13, 13, 13, 0.92);
  backdrop-filter: blur(4px);
  border-bottom: 1px solid var(--iron);
}

.funnel-bar-inner {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-4);
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
}

.funnel-bar-title {
  margin: 0;
  color: var(--paper-white);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.funnel-bar-right {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.funnel-bar-count {
  color: var(--slate);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  white-space: nowrap;
}

.funnel-reset {
  font: inherit;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--signal-red);
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

.funnel-reset:hover,
.funnel-reset:focus-visible {
  color: var(--paper-white);
}

.funnel-bar-track {
  height: 3px;
  background: var(--iron);
}

.funnel-bar-fill {
  height: 100%;
  width: 0;
  background: var(--signal-red);
  transition: width 0.35s ease;
}

.funnel-intro {
  max-width: var(--measure);
  color: var(--slate);
  margin: var(--space-8) 0 0;
}

#funnel {
  max-width: 860px;
  margin-top: var(--space-2);
}

.funnel-step {
  padding: var(--space-12) 0 var(--space-8);
  border-top: 1px solid var(--iron);
  scroll-margin-top: 120px;
}

.funnel-step:first-child { border-top: 0; }

.funnel-count {
  display: block;
  color: var(--signal-red);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}

.funnel-step h2 {
  text-transform: none;
  letter-spacing: 0;
  font-size: 1.4rem;
}

.funnel-help {
  color: var(--slate);
  margin-top: calc(-1 * var(--space-2));
}

.opt-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.opt {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  text-align: left;
  font: inherit;
  color: var(--steel);
  background: var(--panel);
  border: 1px solid var(--iron);
  padding: var(--space-4) var(--space-6);
  cursor: pointer;
  transition: border-color 0.12s ease, background 0.12s ease;
}

.opt:hover,
.opt:focus-visible {
  border-color: var(--slate);
  outline: none;
}

.opt.selected {
  border-color: var(--signal-red);
  background: #1e1416;
}

.opt-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  color: var(--paper-white);
  font-weight: 600;
}

.opt-label .mark {
  color: var(--signal-red);
  font-weight: 700;
  opacity: 0;
}

.opt.selected .opt-label .mark { opacity: 1; }

.opt-desc {
  color: var(--slate);
  font-size: 0.9rem;
  line-height: 1.5;
}

.reassure {
  border-left: 3px solid var(--signal-red);
  background: var(--panel);
  padding: var(--space-3) var(--space-6);
  margin-top: var(--space-6);
}

.reassure p {
  margin: var(--space-2) 0;
  max-width: none;
  color: var(--steel);
  font-size: 0.95rem;
}

.funnel-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  margin-top: var(--space-8);
}

.btn[disabled] {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn-ghost {
  background: none;
  border: 0;
  color: var(--slate);
  padding: 12px 0;
  letter-spacing: 0.04em;
  cursor: pointer;
  font: inherit;
}

.btn-ghost:hover { color: var(--paper-white); }

.funnel-summary {
  background: var(--panel);
  border: 1px solid var(--iron);
  padding: var(--space-6);
  margin-top: var(--space-6);
}

.funnel-summary dl {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: var(--space-3) var(--space-6);
  margin: 0;
}

.funnel-summary dt {
  color: var(--signal-red);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding-top: 2px;
}

.funnel-summary dd {
  margin: 0;
  color: var(--steel);
}

.field { margin-top: var(--space-6); }

.field label {
  display: block;
  color: var(--slate);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}

.field input,
.field textarea {
  width: 100%;
  font: inherit;
  color: var(--steel);
  background: var(--true-black);
  border: 1px solid var(--iron);
  padding: 10px 12px;
}

.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--signal-red);
  box-shadow: 0 0 0 1px var(--signal-red);
}

.field textarea {
  min-height: 96px;
  resize: vertical;
}

.funnel-done {
  border-left: 3px solid var(--signal-red);
  background: var(--panel);
  padding: var(--space-6);
  margin-top: var(--space-6);
}

.funnel-done h2 { font-size: 1.3rem; }
.funnel-done p { color: var(--steel); }

.funnel-done-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.funnel-done-head h2 { margin: 0; }

/* ---------------------------------------------------------------- footer */

.site-footer {
  background: var(--true-black);
  border-top: 1px solid var(--iron);
  padding: var(--space-8) 0;
}

.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  color: var(--slate);
  font-size: 0.85rem;
}

.site-footer a {
  color: var(--slate);
}

.site-footer a:hover {
  color: var(--paper-white);
}

@media (max-width: 640px) {
  .site-nav {
    gap: var(--space-4);
  }
  .site-nav a {
    font-size: 0.8rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}