/* =============================================================================
   Modelbot — site stylesheet
   -----------------------------------------------------------------------------
   Hand-written CSS driven entirely by the tokens in tokens.css. No framework,
   no build step.

   The design system was authored as React components with inline styles; this
   file is that system translated into classes. Layout classes keep their
   original .mb-* names so design/patterns.css remains readable as a reference.

   Structure carries the interest, not decoration. Shadows: none. Radius: ~0.
   ============================================================================= */

/* ============================== Reset & base ============================== */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--surface-canvas);
  color: var(--text-body);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
  margin: 0;
  color: var(--text-strong);
  font-family: var(--font-display);
  font-weight: var(--fw-display);
  letter-spacing: var(--ls-heading);
  text-wrap: pretty;
}

p { margin: 0; text-wrap: pretty; }

a { color: var(--text-link); text-decoration: none; }
a:hover {
  color: var(--text-link-hover);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

img, svg { display: block; max-width: 100%; }

:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 3px;
}

.mb-skip {
  position: absolute;
  left: -9999px;
  z-index: 100;
  background: var(--accent);
  color: var(--text-on-accent);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-sm);
  font-size: var(--fs-body-s);
}
.mb-skip:focus {
  left: var(--space-4);
  top: var(--space-4);
  text-decoration: none;
  color: var(--text-on-accent);
}

.mb-visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* ============================== Layout ==================================== */

.mb-page { container-type: inline-size; container-name: mb-page; }

.mb-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--gutter-lg);
}
.mb-container--narrow { max-width: var(--container-narrow); }

.mb-section {
  padding-top: var(--section-y);
  padding-bottom: var(--section-y);
  scroll-margin-top: 80px;
}
.mb-section--lg { padding-top: var(--section-y-lg); padding-bottom: var(--section-y-lg); }
.mb-section--sm { padding-top: var(--section-y-sm); padding-bottom: var(--section-y-sm); }

/* Tone bands. A tone shift REPLACES the rule — never both. Sections are
   already full-bleed, so the background sits directly on the element. */
.mb-band--sunken { background: var(--surface-sunken); }
.mb-band--deep   { background: var(--surface-deep); }

/* Section separation — exactly one device at a time.
   --rule: the default hairline. --ink: the single 2px rule, used twice on the
   whole page. --gap: no rule, but keeps the vertical room a rule would take
   (used where a tone band has already done the separating). */
.mb-container--rule     { border-top: var(--hairline) solid var(--border-hairline); padding-top: var(--section-y); }
.mb-container--rule-ink { border-top: var(--rule-strong) solid var(--border-ink);   padding-top: var(--section-y); }
.mb-container--gap      { padding-top: var(--section-y); }

/* The signature asymmetric split: numbered mono eyebrow left, content right. */
.mb-split {
  display: grid;
  grid-template-columns: minmax(140px, 200px) 1fr;
  gap: var(--space-16);
  align-items: start;
}
.mb-split__aside { padding-top: 10px; }

.mb-stack-16 { margin-top: var(--space-16); }
.mb-stack-20 { margin-top: var(--space-20); }
.mb-stack-12 { margin-top: var(--space-12); }

/* ============================== Reveal ==================================== */
/* Progressive enhancement only. Content is never gated on JS: the base state
   is visible, and site.js opts elements into the hidden state before revealing
   them. If JS never runs, everything is simply shown. */

.mb-reveal.is-armed {
  opacity: 0;
  transform: translateY(var(--reveal-y));
}
.mb-reveal.is-armed.is-visible {
  opacity: 1;
  transform: none;
  transition:
    opacity var(--dur-slow) var(--ease-out) var(--mb-reveal-delay, 0ms),
    transform var(--dur-slow) var(--ease-out) var(--mb-reveal-delay, 0ms);
}

/* ============================== Nav ======================================= */

.mb-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--surface-canvas);
  border-bottom: 1px solid transparent;
  transition:
    background-color var(--dur-base) var(--ease-standard),
    border-color var(--dur-base) var(--ease-standard);
}
/* The one use of transparency and blur in the whole system: type stays legible
   over scrolled content without resorting to a shadow. */
.mb-nav.is-scrolled {
  background: rgb(247 245 241 / 0.92);
  backdrop-filter: saturate(140%) blur(8px);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
  border-bottom-color: var(--border-default);
}

.mb-nav__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 20px var(--gutter-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
  transition: padding var(--dur-base) var(--ease-standard);
}
.mb-nav.is-scrolled .mb-nav__inner { padding-top: 12px; padding-bottom: 12px; }

.mb-nav__nav { display: flex; align-items: center; gap: var(--space-8); }
.mb-nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
  margin: 0;
  padding: 0;
}
.mb-nav__link {
  font-size: var(--fs-body-s);
  font-weight: var(--fw-medium);
  color: var(--text-body);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition:
    color var(--dur-fast) var(--ease-standard),
    border-color var(--dur-fast) var(--ease-standard);
}
.mb-nav__link:hover {
  color: var(--text-strong);
  border-bottom-color: var(--accent);
  text-decoration: none;
}

/* ============================== Logo ====================================== */

.mb-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.45em;
  color: var(--text-strong);
  text-decoration: none;
  font-size: 19px;
}
.mb-logo:hover { color: var(--text-strong); text-decoration: none; }
.mb-logo svg { width: 1.15em; height: 1.15em; flex: none; }
.mb-logo__word {
  font-family: var(--font-display);
  font-weight: var(--fw-semibold);
  font-size: 1.05em;
  letter-spacing: -0.02em;
  line-height: 1;
}
.mb-logo--sm { font-size: 18px; }

/* ============================== Buttons =================================== */

.mb-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 12px 22px;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: var(--fw-medium);
  line-height: 1.2;
  letter-spacing: 0.005em;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  text-decoration: none;
  cursor: pointer;
  outline-offset: 2px;
  transition:
    background-color var(--dur-fast) var(--ease-standard),
    border-color var(--dur-fast) var(--ease-standard),
    color var(--dur-fast) var(--ease-standard);
}
.mb-btn--sm { padding: 8px 14px; font-size: 13px; }
.mb-btn--lg { padding: 15px 28px; font-size: 17px; }

/* Nothing in this system shrinks, lifts or bounces. Colour change only. */
.mb-btn--primary {
  background: var(--accent);
  color: var(--text-on-accent);
}
.mb-btn--primary:hover  { background: var(--accent-hover);  color: var(--text-on-accent); text-decoration: none; }
.mb-btn--primary:active { background: var(--accent-active); }

.mb-btn--secondary {
  background: transparent;
  border-color: var(--border-default);
  color: var(--text-strong);
}
.mb-btn--secondary:hover {
  background: var(--surface-raised);
  border-color: var(--border-strong);
  color: var(--text-strong);
  text-decoration: none;
}
.mb-btn--secondary:active { background: var(--surface-sunken); }

.mb-btn[disabled] {
  background: var(--border-default);
  color: var(--text-muted);
  cursor: not-allowed;
}

/* ============================== Structure ================================= */

.mb-eyebrow {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
  letter-spacing: var(--ls-eyebrow);
  text-transform: uppercase;
  color: var(--text-muted);
}
.mb-eyebrow--accent { color: var(--accent); }
.mb-eyebrow__index { color: var(--text-muted); }

.mb-title {
  font-size: var(--fs-display-l);
  line-height: var(--lh-display);
  letter-spacing: var(--ls-display);
  max-width: 22ch;
}

.mb-lead {
  margin-top: var(--space-6);
  font-size: var(--fs-body-l);
  line-height: var(--lh-body);
  color: var(--text-body);
  max-width: var(--measure-lead);
}

.mb-prose { max-width: var(--measure-prose); }

/* The 36px/400 setting, reserved for the statement paragraph and the quote,
   where display type should read as speech rather than as a headline. */
.mb-statement {
  font-family: var(--font-display);
  font-weight: var(--fw-regular);
  font-size: var(--fs-display-m);
  line-height: var(--lh-display-m);
  letter-spacing: var(--ls-heading);
  color: var(--text-strong);
  max-width: 34ch;
}

.mb-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-6);
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
  color: var(--text-muted);
}
.mb-meta li { list-style: none; display: inline-flex; gap: var(--space-3); align-items: baseline; }
.mb-meta li + li::before { content: "/"; color: var(--border-strong); }

.mb-panel {
  padding: var(--space-8);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-none);
  color: var(--text-body);
}
.mb-panel--sm { padding: var(--space-5); }
.mb-panel--lg { padding: var(--space-10); }
.mb-panel--raised { background: var(--surface-raised); }
.mb-panel--accent { background: var(--surface-accent-wash); border-color: var(--accent-quiet); }

/* ============================== Hero ====================================== */

.mb-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: var(--space-16);
  align-items: center;
}
.mb-hero__title {
  font-size: var(--fs-display-xl);
  line-height: var(--lh-display);
  letter-spacing: var(--ls-display);
  margin: var(--space-6) 0;
  max-width: 17ch;
}
.mb-hero__lead {
  font-size: var(--fs-body-l);
  line-height: var(--lh-body);
  color: var(--text-body);
  max-width: var(--measure-lead);
}
.mb-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-10);
}
.mb-hero__meta {
  margin-top: var(--space-12);
  padding-top: var(--space-5);
  border-top: 1px solid var(--border-hairline);
}
.mb-hero__figure { display: flex; justify-content: flex-end; }
.mb-hero__figure svg { max-width: 460px; }

/* ============================== Flow diagram ============================== */

.mb-flow svg { width: 100%; overflow: visible; }
.mb-flow-labels {
  display: grid;
  grid-template-columns: 240px 1fr 240px;
  margin-top: var(--space-4);
}
.mb-flow-labels > :nth-child(2) { text-align: center; }
.mb-flow-labels > :nth-child(3) { text-align: right; }
.mb-flow-labels dt {
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-strong);
}
.mb-flow-labels > :nth-child(2) dt { color: var(--accent); }
.mb-flow-labels dd {
  margin: 4px 0 0;
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  color: var(--text-muted);
}

/* ============================== Comparison ================================ */

.mb-compare {
  display: grid;
  grid-template-columns: 48px 1fr 1fr;
  gap: var(--space-10);
  padding: var(--space-10) 0;
  border-top: 1px solid var(--border-hairline);
  align-items: start;
}
.mb-compare__index {
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
  color: var(--text-muted);
  padding-top: 4px;
}
.mb-compare__label {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: var(--ls-eyebrow);
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-4);
}
.mb-compare__answer { border-left: 1px solid var(--border-hairline); padding-left: var(--space-10); }
.mb-compare__answer .mb-compare__label { color: var(--accent); }
.mb-compare h3 {
  font-size: var(--fs-heading);
  line-height: var(--lh-heading);
  font-weight: var(--fw-medium);
  color: var(--text-muted);
}
.mb-compare__answer h3 { font-weight: var(--fw-semibold); color: var(--text-strong); }
.mb-compare p {
  margin-top: var(--space-3);
  font-size: var(--fs-body-s);
  line-height: var(--lh-body);
  color: var(--text-muted);
  max-width: 40ch;
}
.mb-compare__answer p { color: var(--text-body); }

/* ============================== Pipeline ================================== */

.mb-pipeline {
  --mb-cols: 4;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(var(--mb-cols), minmax(0, 1fr));
  border-top: var(--rule-strong) solid var(--border-ink);
}
.mb-pipeline__step {
  padding: var(--space-6) var(--space-8) var(--space-8) 0;
  position: relative;
}
.mb-pipeline__step + .mb-pipeline__step {
  border-left: 1px solid var(--border-hairline);
  padding-left: var(--space-8);
}
.mb-pipeline__head {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}
.mb-pipeline__num { font-family: var(--font-mono); font-size: var(--fs-meta); color: var(--accent); }
.mb-pipeline__rule { flex: 1; height: 0; border-top: 1px solid var(--border-hairline); }
.mb-pipeline h3 { font-size: var(--fs-heading); line-height: var(--lh-heading); font-weight: var(--fw-semibold); }
.mb-pipeline p {
  margin-top: var(--space-3);
  font-size: var(--fs-body-s);
  line-height: var(--lh-body);
  color: var(--text-body);
}
.mb-code {
  margin-top: var(--space-5);
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  line-height: 1.8;
  color: var(--text-muted);
  border-left: 1px solid var(--accent-quiet);
  padding-left: var(--space-4);
  white-space: pre-line;
}

/* ============================== Benefits ================================== */

.mb-benefits {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  column-gap: var(--space-10);
  row-gap: var(--space-12);
  list-style: none;
  margin: 0;
  padding: 0;
}
.mb-benefit { padding-top: var(--space-5); border-top: 1px solid var(--border-hairline); }
.mb-benefit__num {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: var(--ls-eyebrow);
  color: var(--accent);
  margin-bottom: var(--space-4);
}
.mb-benefit h3 {
  font-size: var(--fs-display-s);
  line-height: 1.2;
  font-weight: var(--fw-semibold);
}
.mb-benefit p {
  margin-top: var(--space-4);
  font-size: var(--fs-body-s);
  line-height: var(--lh-body);
  color: var(--text-body);
  max-width: 34ch;
}

/* ============================== Pull quote ================================ */

.mb-quote { margin: 0; display: grid; gap: var(--space-10); }
.mb-quote__mark { color: var(--accent); }
.mb-quote blockquote {
  margin: 0;
  font-family: var(--font-display);
  font-weight: var(--fw-regular);
  font-size: var(--fs-display-m);
  line-height: var(--lh-display-m);
  letter-spacing: var(--ls-heading);
  color: var(--text-strong);
  max-width: 30ch;
}
.mb-quote figcaption {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  align-items: baseline;
  padding-top: var(--space-5);
  border-top: 1px solid var(--border-hairline);
}
.mb-quote__name { font-size: var(--fs-body-s); font-weight: var(--fw-medium); color: var(--text-strong); }
.mb-quote__role { font-family: var(--font-mono); font-size: var(--fs-meta); color: var(--text-muted); }

/* ============================== Numbered stages =========================== */

.mb-stages { list-style: none; margin: 0; padding: 0; max-width: 820px; }
.mb-stage { display: grid; grid-template-columns: 64px 1fr; gap: var(--space-8); }
.mb-stage__rail { display: grid; grid-template-rows: auto 1fr; justify-items: center; gap: var(--space-3); }
.mb-stage__num {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border: 1px solid var(--accent);
  border-radius: var(--radius-pill);   /* the one pill in the system */
  font-family: var(--font-mono);
  font-size: var(--fs-body-s);
  color: var(--accent);
}
.mb-stage__line { width: 0; border-left: 1px solid var(--border-hairline); min-height: 100%; }
.mb-stage__body { padding-bottom: var(--space-12); }
.mb-stage:last-child .mb-stage__body { padding-bottom: 0; }
.mb-stage h3 { font-size: var(--fs-display-s); line-height: 1.2; font-weight: var(--fw-semibold); }
.mb-stage__meta {
  margin-top: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
  color: var(--text-muted);
}
.mb-stage p {
  margin-top: var(--space-4);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--text-body);
  max-width: 52ch;
}
.mb-note { margin-top: var(--space-10); font-size: var(--fs-body-s); color: var(--text-muted); max-width: 60ch; }

/* ============================== Accordion ================================= */

.mb-accordion { border-top: 1px solid var(--border-hairline); }
.mb-accordion__item { border-bottom: 1px solid var(--border-hairline); }

.mb-accordion__summary {
  display: grid;
  grid-template-columns: 40px 1fr 28px;
  align-items: baseline;
  gap: var(--space-4);
  padding: var(--space-6) 0;
  cursor: pointer;
  list-style: none;
  outline-offset: 4px;
}
.mb-accordion__summary::-webkit-details-marker { display: none; }
.mb-accordion__num {
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
  color: var(--text-muted);
  transition: color var(--dur-fast) var(--ease-standard);
}
.mb-accordion__q {
  font-family: var(--font-display);
  font-weight: var(--fw-medium);
  font-size: var(--fs-heading);
  line-height: var(--lh-heading);
  letter-spacing: var(--ls-heading);
  color: var(--text-body);
  transition: color var(--dur-fast) var(--ease-standard);
}
.mb-accordion__summary:hover .mb-accordion__q { color: var(--text-strong); }
.mb-accordion__icon { justify-self: end; position: relative; top: 4px; color: var(--text-muted); }
.mb-accordion__icon-bar {
  transform-origin: 7px 7px;
  transition: transform var(--dur-base) var(--ease-standard);
}
.mb-accordion__item[open] .mb-accordion__num,
.mb-accordion__item[open] .mb-accordion__icon { color: var(--accent); }
.mb-accordion__item[open] .mb-accordion__q { color: var(--text-strong); }
.mb-accordion__item[open] .mb-accordion__icon-bar { transform: scaleY(0); }

.mb-accordion__body {
  display: grid;
  grid-template-columns: 40px 1fr 28px;
  gap: var(--space-4);
  padding-bottom: var(--space-8);
}
.mb-accordion__body > div {
  grid-column: 2;
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--text-body);
  max-width: 62ch;
}
.mb-accordion__body p + p { margin-top: var(--space-4); }

/* ============================== Forms ===================================== */

.mb-contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.7fr);
  gap: var(--space-16);
  align-items: start;
}

.mb-form { display: grid; gap: var(--space-6); }

.mb-field label {
  display: block;
  font-size: var(--fs-body-s);
  font-weight: var(--fw-medium);
  color: var(--text-strong);
  margin-bottom: var(--space-2);
}
.mb-field__optional { color: var(--text-muted); font-weight: var(--fw-regular); }

.mb-field input,
.mb-field textarea {
  width: 100%;
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.5;
  color: var(--text-strong);
  background: var(--surface-raised);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  padding: 11px 13px;
  outline: none;
  transition:
    border-color var(--dur-fast) var(--ease-standard),
    box-shadow var(--dur-fast) var(--ease-standard);
}
.mb-field textarea { resize: vertical; min-height: 96px; }

/* Focus is a 1px accent border plus a 2px quiet ring. Never a glow. */
.mb-field input:focus,
.mb-field textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-quiet);
}
.mb-field input[aria-invalid="true"],
.mb-field textarea[aria-invalid="true"] { border-color: var(--error); }
.mb-field input[aria-invalid="true"]:focus,
.mb-field textarea[aria-invalid="true"]:focus { box-shadow: 0 0 0 2px var(--error-surface); }

.mb-field__hint,
.mb-field__error {
  font-size: var(--fs-meta);
  line-height: var(--lh-tight);
  margin-top: var(--space-2);
  display: block;
}
.mb-field__hint  { color: var(--text-muted); }
.mb-field__error { color: var(--error); }
.mb-field__error:empty { display: none; }

.mb-form__actions {
  display: flex;
  gap: var(--space-4);
  align-items: center;
  flex-wrap: wrap;
}
.mb-form__aside { font-family: var(--font-mono); font-size: var(--fs-meta); color: var(--text-muted); }

/* Honeypot. Positioned off-canvas rather than display:none, which some bots detect. */
.mb-hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.mb-alert { display: grid; gap: var(--space-4); }
.mb-alert__title {
  font-family: var(--font-display);
  font-weight: var(--fw-medium);
  font-size: var(--fs-display-s);
  letter-spacing: var(--ls-heading);
  color: var(--text-strong);
}
.mb-alert--error .mb-alert__title { color: var(--error); }

.mb-next { list-style: none; margin: var(--space-5) 0 0; padding: 0; display: grid; gap: var(--space-4); }
.mb-next li { display: grid; grid-template-columns: 28px 1fr; gap: var(--space-3); font-size: var(--fs-body-s); }
.mb-next__num { font-family: var(--font-mono); font-size: var(--fs-meta); color: var(--accent); }

.mb-aside-stack { display: grid; gap: var(--space-8); }
.mb-aside-stack__foot { padding-top: var(--space-6); border-top: 1px solid var(--border-default); }

/* ============================== Footer ==================================== */

.mb-footer { padding: var(--space-12) 0; }
.mb-footer__inner {
  border-top: var(--rule-strong) solid var(--border-ink);
  padding-top: var(--space-8);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-8);
  justify-content: space-between;
  align-items: baseline;
}
.mb-footer__copy { font-family: var(--font-mono); font-size: var(--fs-meta); color: var(--text-muted); }
.mb-footer__links { display: flex; gap: var(--space-6); list-style: none; margin: 0; padding: 0; font-size: var(--fs-body-s); }

/* ============================== Responsive ================================
   Breakpoints 1200 / 900 / 640, mirrored as @container queries against
   .mb-page so the page also reflows inside a narrow embed.
   ========================================================================== */

@media (max-width: 1200px) {
  .mb-benefits { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  .mb-split { grid-template-columns: 1fr; gap: var(--space-6); }
  .mb-split__aside { padding-top: 0; }
  .mb-hero { grid-template-columns: 1fr; gap: var(--space-12); }
  .mb-hero__title { font-size: var(--fs-display-l); }
  .mb-hero__figure { justify-content: flex-start; }
  .mb-title { font-size: var(--fs-display-m); }
  .mb-pipeline { grid-template-columns: 1fr; }
  .mb-pipeline__step { padding-right: 0; }
  .mb-pipeline__step + .mb-pipeline__step {
    border-left: 0;
    padding-left: 0;
    border-top: 1px solid var(--border-hairline);
  }
  .mb-compare { grid-template-columns: 48px 1fr; row-gap: var(--space-6); column-gap: var(--space-6); }
  .mb-compare__pain, .mb-compare__answer { grid-column: 2; }
  .mb-compare__answer {
    border-left: 0;
    padding-left: 0;
    border-top: 1px solid var(--border-hairline);
    padding-top: var(--space-6);
  }
  .mb-contact { grid-template-columns: 1fr; gap: var(--space-12); }
}

@media (max-width: 640px) {
  .mb-nav__inner { padding-left: var(--gutter); padding-right: var(--gutter); gap: var(--space-4); }
  /* Three anchor links plus a CTA will not fit; the CTA is what matters on a phone. */
  .mb-nav__links { display: none; }
  .mb-container { padding: 0 var(--gutter); }
  .mb-section, .mb-section--lg { padding-top: var(--section-y-sm); padding-bottom: var(--section-y-sm); }
  .mb-container--rule, .mb-container--rule-ink, .mb-container--gap { padding-top: var(--section-y-sm); }
  .mb-hero__title { font-size: 2.5rem; }
  .mb-benefits { grid-template-columns: 1fr; row-gap: var(--space-10); }
  .mb-flow-labels { grid-template-columns: 1fr; gap: var(--space-3); }
  .mb-flow-labels > :nth-child(2), .mb-flow-labels > :nth-child(3) { text-align: left; }
  .mb-flow-labels > :nth-child(2) dt { text-align: left; }
}

@container mb-page (max-width: 1200px) {
  .mb-benefits { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@container mb-page (max-width: 900px) {
  .mb-split { grid-template-columns: 1fr; gap: var(--space-6); }
  .mb-split__aside { padding-top: 0; }
  .mb-hero { grid-template-columns: 1fr; gap: var(--space-12); }
  .mb-hero__title { font-size: var(--fs-display-l); }
  .mb-hero__figure { justify-content: flex-start; }
  .mb-title { font-size: var(--fs-display-m); }
  .mb-pipeline { grid-template-columns: 1fr; }
  .mb-pipeline__step { padding-right: 0; }
  .mb-pipeline__step + .mb-pipeline__step {
    border-left: 0;
    padding-left: 0;
    border-top: 1px solid var(--border-hairline);
  }
  .mb-compare { grid-template-columns: 48px 1fr; row-gap: var(--space-6); column-gap: var(--space-6); }
  .mb-compare__pain, .mb-compare__answer { grid-column: 2; }
  .mb-compare__answer {
    border-left: 0;
    padding-left: 0;
    border-top: 1px solid var(--border-hairline);
    padding-top: var(--space-6);
  }
  .mb-contact { grid-template-columns: 1fr; gap: var(--space-12); }
}

@container mb-page (max-width: 640px) {
  .mb-nav__inner { padding-left: var(--gutter); padding-right: var(--gutter); gap: var(--space-4); }
  .mb-nav__links { display: none; }
  .mb-container { padding: 0 var(--gutter); }
  .mb-section, .mb-section--lg { padding-top: var(--section-y-sm); padding-bottom: var(--section-y-sm); }
  .mb-container--rule, .mb-container--rule-ink, .mb-container--gap { padding-top: var(--section-y-sm); }
  .mb-hero__title { font-size: 2.5rem; }
  .mb-benefits { grid-template-columns: 1fr; row-gap: var(--space-10); }
  .mb-flow-labels { grid-template-columns: 1fr; gap: var(--space-3); }
  .mb-flow-labels > :nth-child(2), .mb-flow-labels > :nth-child(3) { text-align: left; }
  .mb-flow-labels > :nth-child(2) dt { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .mb-reveal.is-armed { opacity: 1; transform: none; }
}