/* ─────────────────────────────────────────────────────
 * multicore_sim — IBM Carbon-inspired landing styles
 * ───────────────────────────────────────────────────── */

:root {
  /* light palette (Carbon "white" theme) */
  --bg:               #ffffff;
  --layer-01:         #f4f4f4;
  --layer-02:         #ffffff;
  --layer-accent:     #e0e0e0;
  --field:            #f4f4f4;
  --text-primary:     #161616;
  --text-secondary:   #525252;
  --text-helper:      #6f6f6f;
  --text-on-color:    #ffffff;
  --border-subtle:    #e0e0e0;
  --border-strong:    #8d8d8d;
  --border-inverse:   #161616;
  --link-primary:     #0f62fe;
  --link-primary-hover:#0043ce;
  --button-primary:   #0f62fe;
  --button-primary-hover: #0050e6;
  --focus:            #0f62fe;
  --inverse-bg:       #161616;
  --inverse-text:     #ffffff;
  --accent:           #0f62fe;
  --accent-hover:     #0043ce;

  --grid-max: 1312px;        /* Carbon 16-col grid max */
  --grid-pad: clamp(16px, 4vw, 64px);
  --gutter:   2rem;          /* 32px */

  /* spacing scale */
  --sp-03: 8px;
  --sp-04: 12px;
  --sp-05: 16px;
  --sp-06: 24px;
  --sp-07: 32px;
  --sp-08: 40px;
  --sp-09: 48px;
  --sp-10: 64px;
  --sp-11: 80px;
  --sp-12: 96px;
  --sp-13: 160px;

  /* typography */
  --duration-fast: 110ms;
  --duration-mid:  240ms;
  --easing:        cubic-bezier(.2,0,.38,.9);
}

[data-theme="dark"] {
  /* dark palette (Carbon "g100" theme, slightly tuned) */
  --bg:               #161616;
  --layer-01:         #262626;
  --layer-02:         #393939;
  --layer-accent:     #525252;
  --field:            #262626;
  --text-primary:     #f4f4f4;
  --text-secondary:   #c6c6c6;
  --text-helper:      #a8a8a8;
  --text-on-color:    #ffffff;
  --border-subtle:    #393939;
  --border-strong:    #6f6f6f;
  --border-inverse:   #f4f4f4;
  --link-primary:     #78a9ff;
  --link-primary-hover:#a6c8ff;
  --button-primary:   #0f62fe;
  --button-primary-hover: #0353e9;
  --focus:            #ffffff;
  --inverse-bg:       #f4f4f4;
  --inverse-text:     #161616;
  --accent:           #78a9ff;
  --accent-hover:     #a6c8ff;
}

/* ─────────────────────────────────────────────────────
 * reset
 * ───────────────────────────────────────────────────── */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text-primary);
  font-family: "IBM Plex Sans", -apple-system, "Segoe UI", system-ui, sans-serif;
  font-size: 1rem;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  letter-spacing: 0;
  font-feature-settings: "kern" 1, "liga" 1;
}

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

a {
  color: var(--link-primary);
  text-decoration: none;
  transition: color var(--duration-fast) var(--easing);
  border-bottom: 1px solid transparent;
}
a:hover { color: var(--link-primary-hover); border-bottom-color: currentColor; }
a:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; border-bottom-color: transparent; }

code, kbd, pre {
  font-family: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

code {
  font-size: 0.9em;
  background: var(--layer-01);
  padding: 1px 6px;
  color: var(--text-primary);
  border: 0;
  border-radius: 0;
}

/* Inline product-name treatment — IBM Plex Mono only, no chip */
code.brand-mono,
.brand-mono {
  font-family: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.95em;
  font-weight: 500;
  background: transparent;
  padding: 0;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}
.cta-band .brand-mono { color: var(--inverse-text); }

pre {
  margin: 0;
  padding: var(--sp-05);
  background: var(--layer-01);
  border: 0;
  border-radius: 0;
  border-left: 1px solid var(--border-subtle);
  overflow-x: auto;
  font-size: 0.875rem;
  line-height: 1.5;
}
pre code {
  background: transparent;
  padding: 0;
  color: var(--text-primary);
}

kbd {
  display: inline-block;
  font-size: 0.75rem;
  padding: 2px 8px;
  background: var(--layer-01);
  border: 1px solid var(--border-subtle);
  border-bottom-width: 2px;
  color: var(--text-primary);
}

p { margin: 0 0 var(--sp-05); color: var(--text-secondary); }
strong { font-weight: 600; color: var(--text-primary); }
em { font-style: italic; color: var(--text-primary); }

/* fluid-style headings */
h1, h2, h3, h4 {
  margin: 0;
  color: var(--text-primary);
  font-family: inherit;
  letter-spacing: 0;
}

h1 { font-size: clamp(1.875rem, 4vw, 3.25rem); font-weight: 300; line-height: 1.15; letter-spacing: -0.01em; }
h2 { font-size: clamp(1.25rem, 2.4vw, 1.875rem); font-weight: 300; line-height: 1.25; letter-spacing: -0.005em; }
h3 { font-size: 1.25rem; font-weight: 600; line-height: 1.3; }
h4 { font-size: 0.75rem; font-weight: 600; letter-spacing: 0.32px; text-transform: uppercase; line-height: 1.5; }

.eyebrow {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.32px;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin: 0 0 var(--sp-05);
}
.eyebrow--inverse { color: rgba(255, 255, 255, 0.7); }

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

/* ─────────────────────────────────────────────────────
 * UI shell (top app bar)
 * ───────────────────────────────────────────────────── */

.ui-shell {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: stretch;
  height: 48px;
  background: var(--bg);
  border-bottom: 1px solid var(--border-subtle);
}

.ui-shell__brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 0 var(--sp-05);
  color: var(--text-primary);
  font-size: 0.875rem;
  font-weight: 400;
  border-bottom: 0;
  border-right: 1px solid var(--border-subtle);
}
.ui-shell__brand:hover { background: var(--layer-01); color: var(--text-primary); border-bottom: 0; }
.ui-shell__brand img { width: 22px; height: 22px; }
.ui-shell__brand strong { font-weight: 600; }

.ui-shell__nav {
  display: flex;
  align-items: stretch;
  flex: 1;
  min-width: 0;
}
.ui-shell__nav a {
  display: inline-flex;
  align-items: center;
  padding: 0 var(--sp-05);
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 400;
  border-bottom: 0;
  border-right: 1px solid transparent;
  transition: background var(--duration-fast) var(--easing), color var(--duration-fast) var(--easing);
}
.ui-shell__nav a:hover {
  background: var(--layer-01);
  color: var(--text-primary);
  border-bottom: 0;
}
.ui-shell__nav a:focus-visible {
  outline-offset: -2px;
}

.ui-shell__actions {
  display: flex;
  align-items: stretch;
  border-left: 1px solid var(--border-subtle);
}

.iconlink {
  width: 48px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 0;
  border-bottom: 0;
  cursor: pointer;
  color: var(--text-primary);
  transition: background var(--duration-fast) var(--easing);
  border-radius: 0;
}
.iconlink:hover { background: var(--layer-01); color: var(--text-primary); border-bottom: 0; }
.iconlink:focus-visible { outline: 2px solid var(--focus); outline-offset: -2px; }

[data-theme="dark"] .theme-icon-light,
[data-theme="light"] .theme-icon-dark { display: none; }

/* ─────────────────────────────────────────────────────
 * Hero
 * ───────────────────────────────────────────────────── */

.hero {
  max-width: var(--grid-max);
  margin: 0 auto;
  padding: var(--sp-13) var(--grid-pad) var(--sp-12);
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 9fr);
  gap: var(--gutter);
  align-items: center;
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
}

.hero__copy { padding-top: var(--sp-04); }

.hero h1 {
  margin-bottom: var(--sp-07);
}

.lead {
  font-size: 1.125rem;
  line-height: 1.5;
  max-width: 560px;
  color: var(--text-secondary);
  margin-bottom: var(--sp-08);
}

.cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1px;
  margin-bottom: var(--sp-09);
}

.meta-note {
  font-size: 0.875rem;
  color: var(--text-helper);
  border-left: 2px solid var(--border-strong);
  padding: var(--sp-04) var(--sp-05);
  background: var(--layer-01);
  margin: 0;
  max-width: 560px;
}
.meta-note p { margin: 0; }
.meta-note p + p {
  margin-top: var(--sp-04);
  padding-top: var(--sp-04);
  border-top: 1px solid var(--border-subtle);
}
.meta-note strong { color: var(--text-primary); }
.meta-note a { color: var(--text-primary); border-bottom: 1px solid currentColor; }
.meta-note a:hover { color: var(--accent); }

.hero__inquiry {
  font-size: 0.875rem;
  color: var(--text-helper);
  margin: 0 0 var(--sp-06);
  padding: 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.hero__inquiry a {
  color: var(--accent);
  font-weight: 500;
  margin-left: 4px;
  border-bottom: 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.hero__inquiry a:hover {
  color: var(--accent-hover);
  border-bottom: 1px solid currentColor;
}
.hero__inquiry svg { transition: transform var(--duration-fast) var(--easing); }
.hero__inquiry a:hover svg { transform: translateX(2px); }

/* ─── Licensing section: contact tiles ─── */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1px;
  background: var(--border-subtle);
  border: 1px solid var(--border-subtle);
}
.contact {
  background: var(--layer-02);
  padding: var(--sp-08) var(--sp-07);
  display: flex;
  flex-direction: column;
}
.section--alt .contact { background: var(--bg); }
.contact .eyebrow { margin-bottom: var(--sp-04); }
.contact h3 {
  font-size: 1.5rem;
  font-weight: 300;
  letter-spacing: -0.005em;
  margin: 0 0 var(--sp-04);
}
.contact__role {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin: 0 0 var(--sp-06);
  flex: 1;
  line-height: 1.5;
}
.contact__email {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-05);
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.875rem;
  color: var(--text-primary);
  background: var(--layer-01);
  padding: var(--sp-04) var(--sp-05);
  margin-bottom: var(--sp-03);
  border-bottom: 0;
  transition: background var(--duration-fast) var(--easing),
              color     var(--duration-fast) var(--easing);
}
.section--alt .contact__email { background: var(--layer-01); }
.contact__email:last-of-type { margin-bottom: 0; }
.contact__email span { word-break: break-all; }
.contact__email svg { flex-shrink: 0; transition: transform var(--duration-fast) var(--easing); }
.contact__email:hover {
  background: var(--button-primary);
  color: var(--text-on-color);
  border-bottom: 0;
}
.contact__email:hover svg { transform: translateX(2px); }

.hero__shot {
  margin: 0 calc(var(--grid-pad) * -0.5) 0 0;
  position: relative;
}
.hero__shot img {
  width: 100%;
  height: auto;
  border: 0;
  display: block;
}
.hero__shot figcaption {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.75rem;
  color: var(--text-helper);
  margin-top: var(--sp-04);
  letter-spacing: 0.16px;
}

/* ─────────────────────────────────────────────────────
 * Buttons (Carbon style: rectangular, arrow on right)
 * ───────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-09);
  min-height: 48px;
  padding: 12px var(--sp-05) 12px var(--sp-05);
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 400;
  line-height: 1.28572;
  letter-spacing: 0.16px;
  border: 1px solid transparent;
  border-radius: 0;
  cursor: pointer;
  transition: background var(--duration-mid) var(--easing),
              border-color var(--duration-mid) var(--easing),
              color var(--duration-mid) var(--easing);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  min-width: 200px;
}
.btn:hover { border-bottom: 1px solid currentColor; }
.btn:focus-visible { outline: 2px solid var(--focus); outline-offset: -4px; }
.btn svg { flex-shrink: 0; }

.btn--primary {
  background: var(--button-primary);
  color: var(--text-on-color);
  border-color: var(--button-primary);
}
.btn--primary:hover { background: var(--button-primary-hover); border-color: var(--button-primary-hover); color: var(--text-on-color); border-bottom-color: var(--button-primary-hover); }

.btn--ghost {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--text-primary);
}
.btn--ghost:hover { background: var(--text-primary); color: var(--bg); border-bottom-color: var(--text-primary); }

.btn--inverse {
  background: var(--inverse-bg);
  color: var(--inverse-text);
  border-color: var(--inverse-bg);
}
[data-theme="light"] .btn--inverse { background: #ffffff; color: #161616; border-color: #ffffff; }
[data-theme="light"] .btn--inverse:hover { background: #f4f4f4; border-color: #f4f4f4; color: #161616; border-bottom-color: #f4f4f4; }
[data-theme="dark"] .btn--inverse:hover { background: #e0e0e0; border-color: #e0e0e0; color: #161616; border-bottom-color: #e0e0e0; }

.btn--block { width: 100%; }

.btn__badge {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.75rem;
  font-weight: 500;
  padding: 2px 8px;
  background: rgba(255, 255, 255, 0.18);
  letter-spacing: 0.32px;
}

/* ─────────────────────────────────────────────────────
 * Section primitives
 * ───────────────────────────────────────────────────── */

.section {
  max-width: var(--grid-max);
  margin: 0 auto;
  padding: var(--sp-12) var(--grid-pad);
  border-bottom: 1px solid var(--border-subtle);
}
.section--alt { background: var(--layer-01); border-bottom: 1px solid var(--border-subtle); }
.section--alt .tile,
.section--alt .accordion details,
.section--alt .quickstart,
.section--alt .os {
  background: var(--bg);
}

.section__head {
  max-width: 880px;
  margin: 0 0 var(--sp-10);
}
.section__head h2 { margin-top: var(--sp-04); }
.section__head .section__lead {
  margin-top: var(--sp-06);
  font-size: 1.0625rem;
  color: var(--text-secondary);
  max-width: 720px;
}

.figure-block {
  margin: var(--sp-10) 0 0;
}
.figure-block img {
  width: 100%;
  border: 1px solid var(--border-subtle);
}
.figure-block figcaption {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.75rem;
  color: var(--text-helper);
  margin-top: var(--sp-04);
  letter-spacing: 0.16px;
}

/* ─────────────────────────────────────────────────────
 * Tile grid (features)
 * ───────────────────────────────────────────────────── */

.tile-grid {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1px;
  background: var(--border-subtle);
  border: 1px solid var(--border-subtle);
}

.tile {
  background: var(--layer-02);
  padding: var(--sp-07) var(--sp-06) var(--sp-07);
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 240px;
  transition: background var(--duration-mid) var(--easing);
}
.section--alt .tile { background: var(--bg); }
.tile:hover { background: var(--layer-01); }
.section--alt .tile:hover { background: var(--layer-01); }

.tile__num {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--accent);
  margin-bottom: var(--sp-06);
  letter-spacing: 0.32px;
}

.tile h3 {
  margin-bottom: var(--sp-04);
  font-weight: 400;
  font-size: 1.25rem;
  letter-spacing: -0.005em;
}
.tile p { font-size: 0.875rem; margin: 0; color: var(--text-secondary); }

/* ─────────────────────────────────────────────────────
 * Steps (how it works)
 * ───────────────────────────────────────────────────── */

.steps {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1px;
  background: var(--border-subtle);
  border: 1px solid var(--border-subtle);
}

.steps li {
  background: var(--bg);
  padding: var(--sp-08) var(--sp-06) var(--sp-07);
  position: relative;
}
.section--alt .steps li { background: var(--layer-02); }

.steps__num {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.32px;
  display: block;
  padding-bottom: var(--sp-04);
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: var(--sp-06);
}

.steps h3 {
  font-weight: 400;
  font-size: 1.125rem;
  margin-bottom: var(--sp-04);
}
.steps p {
  font-size: 0.875rem;
  margin: 0;
  color: var(--text-secondary);
}

/* ─────────────────────────────────────────────────────
 * Install (OS tiles + quickstart)
 * ───────────────────────────────────────────────────── */

.os-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1px;
  background: var(--border-subtle);
  border: 1px solid var(--border-subtle);
  margin-bottom: var(--sp-09);
}

.os {
  background: var(--layer-02);
  padding: var(--sp-07);
  display: flex;
  flex-direction: column;
}

.os h3 {
  font-size: 1.5rem;
  font-weight: 300;
  letter-spacing: -0.005em;
  margin-bottom: var(--sp-04);
}
.os__desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: var(--sp-06);
  flex: 0 0 auto;
}
.os__hint {
  font-size: 0.75rem;
  color: var(--text-helper);
  margin: 0 0 var(--sp-03);
  font-family: "IBM Plex Mono", monospace;
  text-transform: uppercase;
  letter-spacing: 0.32px;
}
.os pre {
  margin-bottom: var(--sp-04);
  font-size: 0.8125rem;
}
.os__sub {
  font-size: 0.8125rem;
  color: var(--text-helper);
  margin: 0 0 var(--sp-06);
  line-height: 1.5;
}
.os .btn {
  margin-top: auto;
}
.os__note {
  font-size: 0.75rem;
  color: var(--text-helper);
  margin: var(--sp-04) 0 0;
}

.quickstart {
  padding: var(--sp-08) var(--sp-07);
  border: 1px solid var(--border-subtle);
  background: var(--layer-02);
}
.quickstart h3 {
  font-size: 1.5rem;
  font-weight: 300;
  letter-spacing: -0.005em;
  margin-bottom: var(--sp-06);
}
.quickstart ol {
  padding-left: 0;
  list-style: none;
  counter-reset: qs;
}
.quickstart li {
  counter-increment: qs;
  position: relative;
  padding: var(--sp-04) 0 var(--sp-04) 56px;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.9375rem;
  color: var(--text-secondary);
}
.quickstart li:last-child { border-bottom: 1px solid var(--border-subtle); }
.quickstart li::before {
  content: counter(qs, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: var(--sp-04);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.32px;
}

/* ─────────────────────────────────────────────────────
 * FAQ accordion (Carbon style: just borders)
 * ───────────────────────────────────────────────────── */

.accordion {
  border-top: 1px solid var(--border-subtle);
}
.accordion details {
  border-bottom: 1px solid var(--border-subtle);
  background: transparent;
  transition: background var(--duration-fast) var(--easing);
}
.section--alt .accordion details { background: transparent; }
.accordion details:hover { background: rgba(127, 127, 127, 0.04); }
.accordion details[open] { background: rgba(127, 127, 127, 0.06); }

.accordion summary {
  list-style: none;
  cursor: pointer;
  padding: var(--sp-05) var(--sp-05) var(--sp-05) 0;
  font-size: 1rem;
  font-weight: 400;
  color: var(--text-primary);
  position: relative;
  padding-right: 56px;
  user-select: none;
}
.accordion summary::-webkit-details-marker { display: none; }
.accordion summary:focus-visible { outline: 2px solid var(--focus); outline-offset: -2px; }

.accordion summary::after {
  content: "";
  position: absolute;
  right: var(--sp-05);
  top: 50%;
  width: 16px;
  height: 16px;
  transform: translateY(-50%);
  background-image: linear-gradient(currentColor, currentColor),
                    linear-gradient(currentColor, currentColor);
  background-size: 16px 1px, 1px 16px;
  background-position: center, center;
  background-repeat: no-repeat;
  transition: transform var(--duration-mid) var(--easing);
  color: var(--text-secondary);
}
.accordion details[open] summary::after {
  background-size: 16px 1px, 0 16px;
  transform: translateY(-50%) rotate(180deg);
  color: var(--text-primary);
}

.accordion details > p {
  padding: 0 var(--sp-05) var(--sp-06) 0;
  margin: 0;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  max-width: 800px;
}

/* ─────────────────────────────────────────────────────
 * CTA band
 * ───────────────────────────────────────────────────── */

.cta-band {
  background: var(--inverse-bg);
  color: var(--inverse-text);
  padding: var(--sp-12) var(--grid-pad);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--sp-09);
  align-items: end;
  border-bottom: 1px solid var(--border-subtle);
}
.cta-band > div { max-width: 720px; }
.cta-band h2 { color: var(--inverse-text); margin-top: var(--sp-04); }

/* ─────────────────────────────────────────────────────
 * Footer
 * ───────────────────────────────────────────────────── */

.foot {
  background: var(--layer-01);
  padding: var(--sp-10) var(--grid-pad) var(--sp-07);
  border-top: 1px solid var(--border-subtle);
}
[data-theme="light"] .foot { background: var(--bg); }

.foot__row {
  max-width: var(--grid-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: var(--sp-09);
  padding-bottom: var(--sp-09);
  border-bottom: 1px solid var(--border-subtle);
}

.foot__brand {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-04);
}
.foot__brand img { width: 40px; height: 40px; flex-shrink: 0; }
.foot__brand p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--text-primary);
  line-height: 1.5;
}
.foot__brand p strong { font-weight: 600; }
.foot__brand p span {
  display: block;
  color: var(--text-helper);
  font-size: 0.875rem;
  margin-top: var(--sp-03);
}

.foot__cols {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--sp-06);
}
.foot__cols h4 {
  margin: 0 0 var(--sp-04);
  color: var(--text-helper);
}
.foot__cols a {
  display: block;
  color: var(--text-secondary);
  font-size: 0.875rem;
  padding: var(--sp-03) 0;
  border-bottom: 0;
}
.foot__cols a:hover { color: var(--text-primary); border-bottom: 0; }

.foot__legal {
  max-width: var(--grid-max);
  margin: var(--sp-07) auto 0;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.75rem;
  color: var(--text-helper);
  letter-spacing: 0.16px;
}

/* ─────────────────────────────────────────────────────
 * Responsive
 * ───────────────────────────────────────────────────── */

@media (max-width: 960px) {
  .hero {
    grid-template-columns: 1fr;
    padding: var(--sp-11) var(--grid-pad) var(--sp-10);
    gap: var(--sp-09);
  }
  .hero__shot { margin-right: 0; }
  .section { padding: var(--sp-11) var(--grid-pad); }
  .ui-shell__nav a { padding: 0 var(--sp-04); }
  .cta-band { grid-template-columns: 1fr; gap: var(--sp-07); }
  .foot__row { grid-template-columns: 1fr; gap: var(--sp-08); }
}

@media (max-width: 640px) {
  .ui-shell__nav a:not(:first-child) { display: none; }
  .btn { min-width: 0; width: 100%; }
  .cta { flex-direction: column; }
  .cta .btn { width: 100%; }
  .ui-shell__brand span { display: none; }
}