/* Hallmark · pre-emit critique: P5 H5 E4 S5 R5 V4
 * genre: modern-minimal · macrostructure: Split Studio · design-system: design.md · designed-as-app
 * theme: Cobalt · enrichment: E0 + product-specific CSS proof panel
 * nav: N13 inline command palette · footer: Ft5 Statement
 * audience: decision-makers in Colombian and Latin American companies
 * use: identify one process worth improving and start a conversation
 * tone: technical, direct, calm · contrast: pass (40–41) · mobile: pass (34, 49–57)
 */

@import url("tokens.css");

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

html,
body {
  overflow-x: clip;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--banner-height) + var(--space-md));
  background: var(--color-paper);
}

body {
  margin: 0;
  background: var(--color-paper);
  color: var(--color-ink-2);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 400;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body.nav-open,
body.cmdk-open {
  overflow: hidden;
}

::selection {
  background: var(--color-accent);
  color: var(--color-accent-ink);
}

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

a {
  color: inherit;
  text-decoration-thickness: var(--rule-hair);
  text-underline-offset: 0.2em;
}

a:active {
  color: var(--color-accent-2);
}

a[aria-disabled="true"],
button:disabled,
button[aria-disabled="true"] {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
}

button,
input {
  color: inherit;
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: var(--color-transparent);
}

:focus {
  outline: none;
}

:focus-visible {
  outline: var(--rule-fine) solid var(--color-focus);
  outline-offset: 3px;
}

h1,
h2,
h3,
h4,
.h-lg,
.m-name,
.phi-title,
.cta h2,
.foot-statement {
  min-width: 0;
  margin-block: 0;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-style: normal;
  font-weight: var(--display-weight);
  letter-spacing: var(--tracking-display);
  overflow-wrap: anywhere;
}

p {
  margin-block: 0;
}

.container {
  width: min(100% - (var(--page-gutter) * 2), var(--content-max));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: var(--space-sm);
  left: var(--space-sm);
  z-index: calc(var(--z-modal) + 1);
  min-height: 44px;
  padding: var(--space-xs) var(--space-sm);
  border: var(--rule-hair) solid var(--color-accent);
  border-radius: var(--radius-input);
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  transform: translateY(calc(-100% - var(--space-lg)));
  transition: transform var(--dur-short) var(--ease-out);
}

.skip-link:focus {
  transform: none;
}

/* Navigation · N13 */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: var(--z-sticky-nav);
  height: var(--banner-height);
  padding-inline: var(--page-gutter);
  background: color-mix(in oklch, var(--color-paper) 88%, var(--color-transparent));
  border-bottom: var(--rule-hair) solid var(--color-transparent);
  backdrop-filter: blur(14px) saturate(115%);
  transition: background-color var(--dur-short) var(--ease-out), border-color var(--dur-short) var(--ease-out);
}

.site-header.scrolled {
  background: color-mix(in oklch, var(--color-paper) 96%, var(--color-transparent));
  border-color: var(--color-rule);
}

.nav-shell {
  width: min(100%, var(--content-max));
  height: 100%;
  margin-inline: auto;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto auto;
  align-items: center;
  gap: var(--space-lg);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  min-height: 44px;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: 1.22rem;
  font-weight: 700;
  letter-spacing: -0.045em;
  text-decoration: none;
  white-space: nowrap;
}

.brand img {
  width: 30px;
  height: 30px;
  border-radius: 7px;
}

.nav-menu {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(var(--space-xs), 1.7vw, var(--space-lg));
  min-width: 0;
}

.nav-link,
.drop-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2xs);
  min-height: 44px;
  padding: 0;
  border: 0;
  background: var(--color-transparent);
  color: var(--color-neutral);
  font-size: var(--text-sm);
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
}

.nav-link::after,
.drop-btn::after {
  content: "";
  position: absolute;
  inset: auto 0 4px;
  height: var(--rule-fine);
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--dur-short) var(--ease-out);
}

@media (hover: hover) {
  .nav-link:hover,
  .drop-btn:hover {
    color: var(--color-ink);
  }

  .nav-link:hover::after,
  .drop-btn:hover::after {
    transform: scaleX(1);
    transform-origin: left;
  }
}

.has-drop {
  position: relative;
}

.drop-panel {
  position: absolute;
  top: calc(100% + var(--space-xs));
  left: 50%;
  width: min(25rem, calc(100vw - (var(--page-gutter) * 2)));
  padding: var(--space-xs);
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-card);
  background: var(--color-paper);
  box-shadow: var(--shadow-nav);
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, -6px);
  transition: opacity var(--dur-short) var(--ease-out), transform var(--dur-short) var(--ease-out);
}

.has-drop.open .drop-panel {
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, 0);
}

.drop-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-sm);
  min-height: 58px;
  padding: var(--space-sm);
  border-radius: var(--radius-input);
  color: var(--color-ink-2);
  text-decoration: none;
}

.drop-item + .drop-item {
  border-top: var(--rule-hair) solid var(--color-rule);
}

.drop-ico {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-input);
  color: var(--color-accent);
}

.drop-item strong,
.drop-item small {
  display: block;
}

.drop-item small {
  margin-top: var(--space-3xs);
  color: var(--color-muted);
  font-size: var(--text-xs);
  line-height: 1.45;
}

@media (hover: hover) {
  .drop-item:hover {
    background: var(--color-paper-2);
  }
}

.search-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  min-width: 11rem;
  min-height: 40px;
  padding: 0 var(--space-xs) 0 var(--space-sm);
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-input);
  background: var(--color-paper-2);
  color: var(--color-muted);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  cursor: pointer;
  transition: border-color var(--dur-short) var(--ease-out), background-color var(--dur-short) var(--ease-out);
  white-space: nowrap;
}

.search-pill svg {
  flex: 0 0 auto;
}

.search-pill kbd {
  margin-left: auto;
  padding: var(--space-3xs) var(--space-2xs);
  border: var(--rule-hair) solid var(--color-rule-2);
  border-radius: 4px;
  background: var(--color-paper);
  color: var(--color-neutral);
  font: inherit;
}

@media (hover: hover) {
  .search-pill:hover {
    border-color: var(--color-accent);
    background: var(--color-paper);
  }
}

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  min-height: 46px;
  padding: var(--space-xs) var(--space-sm);
  border: var(--rule-hair) solid var(--color-rule-2);
  border-radius: var(--radius-input);
  background: var(--color-paper);
  color: var(--color-ink);
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color var(--dur-short) var(--ease-out), color var(--dur-short) var(--ease-out), border-color var(--dur-short) var(--ease-out), transform var(--dur-micro) var(--ease-out);
}

.btn-primary {
  border-color: var(--color-accent);
  background: var(--color-accent);
  color: var(--color-accent-ink);
}

.btn-ghost {
  background: var(--color-transparent);
}

.btn-light {
  border-color: var(--color-on-dark);
  background: var(--color-on-dark);
  color: var(--color-graphite);
}

@media (hover: hover) {
  .btn:hover {
    border-color: var(--color-ink);
    background: var(--color-ink);
    color: var(--color-paper);
    transform: translateY(-1px);
  }

  .btn-primary:hover {
    border-color: var(--color-accent-2);
    background: var(--color-accent-2);
    color: var(--color-accent-ink);
  }

  .btn-light:hover {
    border-color: var(--color-accent);
    background: var(--color-accent);
    color: var(--color-accent-ink);
  }
}

.btn:active,
.search-pill:active,
.nav-toggle:active {
  transform: translateY(1px);
}

.btn[aria-disabled="true"],
.btn:disabled,
.search-pill:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
}

.btn[data-state="loading"]::before {
  content: "";
  width: 0.85rem;
  height: 0.85rem;
  border: var(--rule-fine) solid currentColor;
  border-right-color: var(--color-transparent);
  border-radius: var(--radius-pill);
  animation: spin 800ms linear infinite;
}

.btn[data-state="error"] {
  border-color: var(--color-error);
}

.btn[data-state="success"]::before {
  content: "✓";
}

.nav-cta {
  min-height: 40px;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-input);
  background: var(--color-paper);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: var(--rule-fine);
  margin: 4px auto;
  background: var(--color-ink);
  transition: transform var(--dur-short) var(--ease-out), opacity var(--dur-short) var(--ease-out);
}

.nav-open .nav-toggle span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-open .nav-toggle span:nth-child(2) {
  opacity: 0;
}

.nav-open .nav-toggle span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.mobile-nav {
  position: fixed;
  inset: var(--banner-height) 0 auto;
  z-index: calc(var(--z-sticky-nav) - 1);
  display: none;
  max-height: calc(100dvh - var(--banner-height));
  padding: var(--space-sm) var(--page-gutter) var(--space-lg);
  overflow-y: auto;
  border-bottom: var(--rule-hair) solid var(--color-rule);
  background: var(--color-paper);
  box-shadow: var(--shadow-nav);
}

.mobile-nav.show {
  display: grid;
  gap: var(--space-2xs);
}

.m-link,
.mobile-nav > a:not(.btn),
.m-sub a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 48px;
  padding: 0 var(--space-xs);
  border: 0;
  border-bottom: var(--rule-hair) solid var(--color-rule);
  background: var(--color-transparent);
  color: var(--color-ink);
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
}

.m-sub {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--dur-long) var(--ease-out);
}

.m-sub > div {
  min-height: 0;
  overflow: hidden;
}

.m-sub.open {
  grid-template-rows: 1fr;
}

.m-sub a {
  padding-left: var(--space-lg);
  color: var(--color-neutral);
  font-size: var(--text-sm);
}

.m-foot {
  margin-top: var(--space-sm);
  color: var(--color-muted);
  font-family: var(--font-body);
  font-size: var(--text-xs);
}

/* Command palette */
.cmdk {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: grid;
  place-items: start center;
  padding: 12vh var(--space-sm) var(--space-sm);
  visibility: hidden;
  opacity: 0;
  transition: opacity var(--dur-short) var(--ease-out), visibility var(--dur-short) var(--ease-out);
}

.cmdk.is-open {
  visibility: visible;
  opacity: 1;
}

.cmdk-backdrop {
  position: absolute;
  inset: 0;
  background: color-mix(in oklch, var(--color-graphite) 58%, var(--color-transparent));
  backdrop-filter: blur(5px);
}

.cmdk-panel {
  position: relative;
  width: min(36rem, 100%);
  overflow: hidden;
  border: var(--rule-hair) solid var(--color-rule-2);
  border-radius: var(--radius-card);
  background: var(--color-paper);
  box-shadow: var(--shadow-nav);
  transform: translateY(-8px);
  transition: transform var(--dur-short) var(--ease-out);
}

.cmdk.is-open .cmdk-panel {
  transform: none;
}

.cmdk-field {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-xs);
  min-height: 62px;
  padding-inline: var(--space-md);
  border-bottom: var(--rule-hair) solid var(--color-rule);
}

.cmdk-field input {
  width: 100%;
  min-width: 0;
  min-height: 44px;
  padding: 0;
  border: 0;
  background: var(--color-transparent);
  color: var(--color-ink);
  font-size: var(--text-md);
  outline: var(--rule-fine) solid var(--color-transparent);
  outline-offset: 1px;
}

.cmdk-field input:focus-visible {
  outline-color: var(--color-focus);
  outline-offset: 1px;
}

.cmdk-field input::placeholder {
  color: var(--color-muted);
}

.cmdk-field kbd,
.cmdk-foot kbd {
  padding: var(--space-3xs) var(--space-2xs);
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: 4px;
  background: var(--color-paper-2);
  color: var(--color-muted);
  font-family: var(--font-body);
  font-size: var(--text-xs);
}

.cmdk-results {
  max-height: 23rem;
  padding: var(--space-xs);
  overflow-y: auto;
}

.cmdk-group {
  padding: var(--space-xs) var(--space-sm) var(--space-2xs);
  color: var(--color-muted);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}

.cmdk-item {
  width: 100%;
  min-height: 52px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) var(--space-sm);
  border: 0;
  border-radius: var(--radius-input);
  background: var(--color-transparent);
  color: var(--color-ink-2);
  text-align: left;
  cursor: pointer;
}

.cmdk-item[hidden] {
  display: none;
}

.cmdk-item.is-active,
.cmdk-item:hover {
  background: var(--color-accent-soft);
  color: var(--color-ink);
}

.cmdk-item span:first-child {
  color: var(--color-accent);
  font-family: var(--font-body);
  font-size: var(--text-xs);
}

.cmdk-item small {
  color: var(--color-muted);
  font-size: var(--text-xs);
}

.cmdk-empty {
  display: none;
  padding: var(--space-xl) var(--space-sm);
  color: var(--color-muted);
  text-align: center;
}

.cmdk-foot {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-md);
  padding: var(--space-xs) var(--space-md);
  border-top: var(--rule-hair) solid var(--color-rule);
  color: var(--color-muted);
  font-size: var(--text-xs);
}

/* Hero · H2 split diptych */
.hero {
  position: relative;
  min-height: clamp(39rem, 78dvh, 48rem);
  padding: calc(var(--banner-height) + var(--space-lg)) 0 var(--space-4xl);
  background: var(--color-paper);
  color: var(--color-ink-2);
  isolation: isolate;
}

.hero-bg,
.hero-grid,
.orb {
  display: none;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto var(--page-gutter) 0;
  height: var(--rule-hair);
  background: var(--color-rule);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  align-items: center;
  gap: clamp(var(--space-xl), 6vw, var(--space-3xl));
}

.hero-inner > div:first-child {
  min-width: 0;
  animation: hero-enter var(--dur-long) var(--ease-out) both;
}

.hero-badge,
.eyebrow,
.m-num,
.prod-tag,
.source-note,
.badge,
.why-n {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--color-muted);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: var(--tracking-label);
  line-height: 1.4;
  text-transform: uppercase;
}

.hero-badge {
  margin-bottom: var(--space-lg);
}

.pulse {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
}

.hero h1 {
  max-width: 11.5ch;
  font-size: var(--text-display);
  line-height: 0.98;
}

.grad-text {
  background: none;
  color: var(--color-accent);
  -webkit-text-fill-color: currentColor;
}

.hero-sub {
  max-width: 59ch;
  margin-top: var(--space-lg);
  color: var(--color-neutral);
  font-size: var(--text-md);
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-lg);
}

.hero-rail {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-xs);
  margin-top: var(--space-xl);
  color: var(--color-muted);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: var(--tracking-label);
}

.rail-step {
  color: var(--color-neutral);
  transition: color var(--dur-short) var(--ease-out);
}

.rail-step.on {
  color: var(--color-accent);
}

.rail-sep {
  color: var(--color-rule-2);
}

.hero-visual {
  position: relative;
  min-width: 0;
  padding: var(--space-sm);
  border: var(--rule-hair) solid var(--color-rule-2);
  border-radius: var(--radius-card);
  background: var(--color-graphite);
  color: var(--color-on-dark);
  box-shadow: var(--shadow-card);
  animation: hero-enter var(--dur-long) var(--ease-out) 100ms both;
}

.hero-visual::before {
  content: "ERONN / OPERATING MODEL";
  display: block;
  padding: var(--space-xs) var(--space-sm) var(--space-sm);
  border-bottom: var(--rule-hair) solid var(--color-graphite-2);
  color: var(--color-on-dark-soft);
  font-family: var(--font-outlier);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-label);
}

.stack {
  display: grid;
  gap: var(--space-xs);
  padding: var(--space-sm);
}

.card-glass {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: var(--space-sm);
  min-height: 88px;
  padding: var(--space-sm);
  border: var(--rule-hair) solid var(--color-graphite-2);
  border-radius: var(--radius-input);
  background: var(--color-graphite);
  color: var(--color-on-dark);
  transform: none;
}

.cg-num {
  color: var(--color-accent);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
}

.cg-body,
.cg-body strong,
.cg-body small {
  display: block;
}

.cg-body strong {
  color: var(--color-on-dark);
  font-family: var(--font-display);
  font-size: var(--text-md);
}

.cg-body small {
  margin-top: var(--space-3xs);
  color: var(--color-on-dark-soft);
}

.cg-bar {
  display: block;
  height: var(--rule-fine);
  margin-top: var(--space-xs);
  overflow: hidden;
  background: var(--color-graphite-2);
}

.cg-bar i {
  display: block;
  width: 64%;
  height: 100%;
  background: var(--color-accent);
}

.card-glass:nth-child(2) .cg-bar i {
  width: 78%;
}

.card-glass:nth-child(3) .cg-bar i {
  width: 92%;
}

.chip-float {
  position: static;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  width: fit-content;
  min-height: 30px;
  padding: var(--space-2xs) var(--space-xs);
  border: var(--rule-hair) solid var(--color-graphite-2);
  border-radius: var(--radius-input);
  background: var(--color-graphite);
  color: var(--color-on-dark-soft);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  transform: none;
}

.chip-float i {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-pill);
  background: var(--color-success);
}

.marquee {
  overflow: hidden;
  border-bottom: var(--rule-hair) solid var(--color-rule);
  background: var(--color-paper-2);
}

.marquee-track {
  display: flex;
  align-items: center;
  width: max-content;
  min-height: 48px;
  animation: marquee 48s linear infinite;
}

.marquee-item {
  padding-inline: var(--space-md);
  color: var(--color-neutral);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  white-space: nowrap;
}

.marquee-dot {
  width: 5px;
  height: 5px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
}

.marquee:hover .marquee-track {
  animation-play-state: paused;
}

/* Shared sections */
.section {
  position: relative;
  padding-block: var(--space-3xl);
  background: var(--color-paper);
  color: var(--color-ink-2);
}

.bg-surface {
  background: var(--color-paper-2);
}

.bg-dark,
.philosophy,
.cta {
  background: var(--color-graphite);
  color: var(--color-on-dark);
}

.section-head,
.section-head.center {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  max-width: 54rem;
  margin: 0 0 var(--space-2xl);
  text-align: left;
}

.section-head .eyebrow,
.about-text .eyebrow {
  margin-bottom: var(--space-sm);
}

.h-lg {
  max-width: 20ch;
  font-size: var(--text-3xl);
  line-height: 1.04;
}

.lead {
  max-width: 60ch;
  margin-top: var(--space-lg);
  color: var(--color-neutral);
  font-size: var(--text-md);
}

.reveal {
  opacity: 1;
  transform: none;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--space-xs);
}

.problem-card {
  grid-column: span 3;
  min-width: 0;
  min-height: 15rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-lg);
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-card);
  background: var(--color-paper);
}

.problem-card:nth-child(2),
.problem-card:nth-child(4) {
  transform: translateY(var(--space-lg));
}

.p-ico,
.cap-ico {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: auto;
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-input);
  color: var(--color-accent);
}

.problem-card h3,
.cap h3,
.why h3,
.case h3 {
  font-size: var(--text-lg);
  line-height: 1.15;
}

.problem-card p,
.cap p,
.why p {
  margin-top: var(--space-xs);
  color: var(--color-muted);
}

.closing-note {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  max-width: 48rem;
  margin-top: calc(var(--space-2xl) + var(--space-lg));
  padding-top: var(--space-lg);
  border-top: var(--rule-hair) solid var(--color-rule);
  color: var(--color-ink);
  font-weight: 600;
}

.closing-note svg {
  flex: 0 0 auto;
  color: var(--color-accent);
}

/* Method · F4 step sequence */
.method-list {
  display: grid;
  gap: 0;
  border-top: var(--rule-hair) solid var(--color-rule-2);
}

.method {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(var(--space-xl), 6vw, var(--space-3xl));
  padding-block: var(--space-2xl);
  border-bottom: var(--rule-hair) solid var(--color-rule-2);
}

.m-num {
  margin-bottom: var(--space-sm);
  color: var(--color-accent);
}

.m-name {
  font-size: var(--text-3xl);
  line-height: 1;
}

.m-claim {
  margin-top: var(--space-sm);
  color: var(--color-neutral);
  font-size: var(--text-md);
}

.method > div:last-child > p:first-child {
  max-width: 52ch;
  color: var(--color-neutral);
  font-size: var(--text-md);
}

.m-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2xs);
  margin: var(--space-lg) 0;
  padding: 0;
  list-style: none;
}

.tag {
  padding: var(--space-2xs) var(--space-xs);
  border: var(--rule-hair) solid var(--color-rule-2);
  border-radius: var(--radius-input);
  color: var(--color-neutral);
  font-family: var(--font-body);
  font-size: var(--text-xs);
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  min-height: 44px;
  color: var(--color-ink);
  font-weight: 600;
  text-decoration-color: var(--color-accent);
  text-decoration-thickness: var(--rule-fine);
  white-space: nowrap;
}

.link-arrow svg {
  transition: transform var(--dur-short) var(--ease-out);
}

@media (hover: hover) {
  .link-arrow:hover svg {
    transform: translateX(3px);
  }
}

.philosophy {
  min-height: 28rem;
  display: grid;
  align-items: center;
}

.philosophy .container {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  align-items: end;
  gap: var(--space-3xl);
}

.phi-title {
  max-width: 15ch;
  color: var(--color-on-dark);
  font-size: var(--text-3xl);
  line-height: 1.04;
}

.phi-text {
  max-width: 48ch;
  color: var(--color-on-dark-soft);
  font-size: var(--text-md);
}

.phi-chain {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding-top: var(--space-lg);
  border-top: var(--rule-hair) solid var(--color-graphite-2);
}

.phi-pill {
  color: var(--color-on-dark);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}

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

/* Products */
.product-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-lg);
}

.product {
  min-width: 0;
  overflow: hidden;
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-card);
  background: var(--color-paper);
}

.prod-visual {
  min-height: 15rem;
  display: grid;
  align-content: center;
  gap: var(--space-xs);
  padding: var(--space-xl);
  border-bottom: var(--rule-hair) solid var(--color-rule);
  background: var(--color-graphite);
  color: var(--color-on-dark);
}

.pv-2 .prod-visual {
  background: var(--color-ink);
  color: var(--color-on-dark);
}

.mock-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-xs);
  min-height: 48px;
  padding: var(--space-xs) var(--space-sm);
  border: var(--rule-hair) solid var(--color-graphite-2);
  border-radius: var(--radius-input);
  color: var(--color-on-dark-soft);
  font-family: var(--font-body);
  font-size: var(--text-xs);
}

.mock-row b {
  color: var(--color-on-dark);
}

.mock-row .dot {
  width: 7px;
  height: 7px;
  border-radius: var(--radius-pill);
  background: var(--color-success);
}

.mock-row .pill {
  color: var(--color-accent);
  white-space: nowrap;
}

.prod-body {
  padding: var(--space-xl);
}

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

.prod-body h3 {
  margin-top: var(--space-xs);
  font-size: var(--text-2xl);
  line-height: 1.05;
}

.prod-claim {
  margin-top: var(--space-sm);
  color: var(--color-neutral);
  font-size: var(--text-md);
}

.prod-body > p:not(.prod-claim):not(.prod-note) {
  margin-top: var(--space-sm);
  color: var(--color-muted);
}

.feat-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-xs) var(--space-md);
  margin: var(--space-lg) 0 0;
  padding: 0;
  list-style: none;
}

.feat-list li {
  position: relative;
  padding-left: var(--space-md);
  color: var(--color-neutral);
  font-size: var(--text-sm);
}

.feat-list li::before {
  content: "";
  position: absolute;
  top: 0.62em;
  left: 0;
  width: 7px;
  height: 7px;
  border: var(--rule-fine) solid var(--color-accent);
  border-radius: var(--radius-pill);
}

.prod-note {
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: var(--rule-hair) solid var(--color-rule);
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.prod-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

/* Evidence · T4 */
.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: var(--rule-hair) solid var(--color-rule-2);
  border-bottom: var(--rule-hair) solid var(--color-rule-2);
}

.metric {
  min-width: 0;
  padding: var(--space-xl) var(--space-lg);
}

.metric + .metric {
  border-left: var(--rule-hair) solid var(--color-rule-2);
}

.metric-value {
  color: var(--color-ink);
  font-family: var(--font-outlier);
  font-size: clamp(1.55rem, 3vw, 2.65rem);
  font-weight: 600;
  letter-spacing: -0.045em;
  line-height: 1;
  overflow-wrap: anywhere;
}

.metric-label {
  margin-top: var(--space-sm);
  color: var(--color-muted);
  font-size: var(--text-sm);
  line-height: 1.5;
}

.metrics-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  margin-top: var(--space-lg);
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.source-note {
  color: var(--color-muted);
  text-transform: none;
}

.cap-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--space-xs);
}

.cap {
  grid-column: span 3;
  min-height: 18rem;
  display: flex;
  flex-direction: column;
  padding: var(--space-lg);
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-card);
  background: var(--color-paper);
}

.cap h3 {
  margin-top: auto;
}

/* Cases */
.case-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-lg);
}

.case {
  min-width: 0;
  padding: var(--space-xl);
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-card);
  background: var(--color-paper);
}

.case-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-md);
  padding-bottom: var(--space-lg);
  border-bottom: var(--rule-hair) solid var(--color-rule);
}

.badge {
  flex: 0 0 auto;
  min-height: 28px;
  padding: 0 var(--space-xs);
  border: var(--rule-hair) solid var(--color-rule-2);
  border-radius: var(--radius-input);
  color: var(--color-neutral);
  white-space: nowrap;
}

.badge.live {
  border-color: var(--color-success);
  color: var(--color-neutral);
}

.case dl {
  margin: 0;
}

.case-step {
  display: grid;
  grid-template-columns: 6.5rem minmax(0, 1fr);
  gap: var(--space-md);
  padding-block: var(--space-md);
  border-bottom: var(--rule-hair) solid var(--color-rule);
}

.case-step dt {
  color: var(--color-muted);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}

.case-step dd {
  margin: 0;
  color: var(--color-neutral);
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--space-xs);
}

.why {
  grid-column: span 6;
  min-height: 13rem;
  padding: var(--space-xl);
  border-top: var(--rule-hair) solid var(--color-rule-2);
}

.why-n {
  margin-bottom: var(--space-xl);
  color: var(--color-accent);
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-items: stretch;
  gap: var(--space-lg);
}

.about-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding: clamp(var(--space-lg), 5vw, var(--space-3xl));
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-card);
  background: var(--color-paper);
}

.about-text > p:not(.eyebrow):not(.lead) {
  max-width: 56ch;
  margin-top: var(--space-md);
  color: var(--color-muted);
}

.about-text .link-arrow {
  margin-top: var(--space-lg);
}

/* Final CTA and Ft5 statement footer */
.cta {
  min-height: 35rem;
  display: grid;
  align-items: center;
  text-align: left;
}

.cta .container {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: var(--space-3xl);
  align-items: end;
}

.cta h2 {
  max-width: 14ch;
  color: var(--color-on-dark);
  font-size: var(--text-3xl);
  line-height: 1.03;
}

.cta > .container > p:not(.signature) {
  max-width: 50ch;
  color: var(--color-on-dark-soft);
  font-size: var(--text-md);
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.cta .btn-ghost {
  border-color: var(--color-graphite-2);
  color: var(--color-on-dark);
}

.signature {
  grid-column: 1 / -1;
  padding-top: var(--space-lg);
  border-top: var(--rule-hair) solid var(--color-graphite-2);
  color: var(--color-on-dark-soft);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}

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

.site-footer {
  padding: var(--space-3xl) 0 var(--space-xl);
  background: var(--color-paper);
  color: var(--color-ink-2);
}

.foot-grid {
  display: grid;
  grid-template-columns: minmax(0, 2fr) repeat(3, minmax(8rem, 0.55fr));
  gap: var(--space-xl);
}

.foot-brand > p,
.foot-statement {
  max-width: 26ch;
  margin: var(--space-lg) 0;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: var(--tracking-display);
}

.foot-mail {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  min-height: 44px;
  color: var(--color-neutral);
  font-size: var(--text-sm);
  font-weight: 600;
  white-space: nowrap;
}

.foot-social {
  display: flex;
  gap: var(--space-2xs);
  margin-top: var(--space-sm);
}

.foot-social a {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-input);
  color: var(--color-neutral);
}

@media (hover: hover) {
  .foot-social a:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
  }
}

.foot-col h3 {
  margin-bottom: var(--space-sm);
  color: var(--color-muted);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}

.foot-col ul {
  display: grid;
  gap: var(--space-2xs);
  margin: 0;
  padding: 0;
  list-style: none;
}

.foot-col a,
.foot-legal a {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  color: var(--color-neutral);
  font-size: var(--text-sm);
  text-decoration: none;
  white-space: nowrap;
}

@media (hover: hover) {
  .foot-col a:hover,
  .foot-legal a:hover {
    color: var(--color-accent);
    text-decoration: underline;
  }
}

.foot-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
  padding-top: var(--space-lg);
  border-top: var(--rule-hair) solid var(--color-rule);
  color: var(--color-muted);
  font-family: var(--font-body);
  font-size: var(--text-xs);
}

.foot-legal {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

/* Responsive */
@media (max-width: 70rem) {
  .nav-shell {
    grid-template-columns: auto minmax(0, 1fr) auto;
  }

  .search-pill span,
  .search-pill kbd {
    display: none;
  }

  .search-pill {
    min-width: 44px;
    width: 44px;
    min-height: 44px;
    padding: 0;
    justify-content: center;
  }

  .nav-cta {
    display: none;
  }

  .problem-card,
  .cap {
    grid-column: span 6;
  }

  .problem-card:nth-child(2),
  .problem-card:nth-child(4) {
    transform: none;
  }

  .metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .metric:nth-child(3) {
    border-left: 0;
    border-top: var(--rule-hair) solid var(--color-rule-2);
  }

  .metric:nth-child(4) {
    border-top: var(--rule-hair) solid var(--color-rule-2);
  }

  .foot-grid {
    grid-template-columns: minmax(0, 1.6fr) repeat(3, minmax(7rem, 0.6fr));
  }
}

@media (max-width: 60rem) {
  .site-header {
    height: var(--banner-height);
  }

  .nav-shell {
    grid-template-columns: auto minmax(0, 1fr) auto auto;
    gap: var(--space-xs);
  }

  .nav-menu {
    display: none;
  }

  .nav-toggle {
    display: block;
  }

  .hero {
    min-height: auto;
    padding-top: calc(var(--banner-height) + var(--space-2xl));
    padding-bottom: var(--space-3xl);
  }

  .hero-inner,
  .method,
  .philosophy .container,
  .about-grid,
  .cta .container {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-visual {
    margin-top: var(--space-md);
  }

  .phi-chain,
  .signature {
    grid-column: auto;
  }

  .product-grid,
  .case-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .cap {
    min-height: 14rem;
  }

  .foot-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .foot-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 48rem) {
  .section-head,
  .section-head.center {
    display: flex;
    flex-direction: column;
  }

  .section {
    padding-block: var(--space-2xl);
  }

  .problem-grid,
  .cap-grid,
  .why-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .problem-card,
  .cap,
  .why {
    grid-column: auto;
  }

  .problem-card,
  .cap {
    min-height: 12rem;
  }

  .why {
    min-height: auto;
    padding-inline: 0;
  }

  .metrics-foot,
  .prod-foot,
  .foot-bottom {
    align-items: flex-start;
    flex-direction: column;
  }

  .feat-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .mock-row {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .mock-row .pill {
    grid-column: 2;
  }

  .phi-chain {
    align-items: flex-start;
    flex-direction: column;
  }

  .phi-arrow {
    transform: rotate(90deg);
  }

  .cta-actions,
  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .cta-actions .btn,
  .hero-actions .btn {
    width: 100%;
  }

  .foot-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .foot-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 40rem) {
  :root {
    --banner-height: 4.25rem;
  }

  .site-header {
    padding-inline: var(--space-sm);
  }

  .brand span {
    font-size: 1.1rem;
  }

  .hero {
    padding-top: calc(var(--banner-height) + var(--space-xl));
  }

  .hero h1 {
    max-width: 12ch;
    font-size: clamp(2.65rem, 14vw, 4rem);
    line-height: 1;
  }

  .hero-badge {
    align-items: flex-start;
    letter-spacing: 0.04em;
  }

  .hero-rail {
    gap: var(--space-2xs);
    letter-spacing: 0.04em;
  }

  .hero-visual {
    padding: var(--space-2xs);
  }

  .hero-visual::before,
  .stack {
    padding-inline: var(--space-xs);
  }

  .card-glass {
    min-height: 76px;
    padding: var(--space-xs);
  }

  .marquee-track {
    animation-duration: 60s;
  }

  .prod-visual,
  .prod-body,
  .case,
  .about-text {
    padding: var(--space-md);
  }

  .metrics {
    grid-template-columns: minmax(0, 1fr);
  }

  .metric + .metric,
  .metric:nth-child(3) {
    border-left: 0;
    border-top: var(--rule-hair) solid var(--color-rule-2);
  }

  .case-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .case-step {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-2xs);
  }

  .foot-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .foot-brand,
  .foot-col {
    grid-column: auto;
  }

  .cmdk {
    padding: 0;
  }

  .cmdk-panel {
    width: 100%;
    min-height: 100dvh;
    border: 0;
    border-radius: 0;
  }

  .cmdk-results {
    max-height: calc(100dvh - 7.5rem);
  }

  .cmdk-foot {
    display: none;
  }
}

@media (max-width: 23.5rem) {
  .nav-shell {
    gap: var(--space-2xs);
  }

  .hero h1 {
    font-size: clamp(2.35rem, 13.5vw, 3.2rem);
  }

  .hero-sub {
    font-size: var(--text-base);
  }

  .hero-rail {
    font-size: 0.68rem;
  }

  .m-link,
  .mobile-nav > a:not(.btn),
  .m-sub a {
    padding-inline: var(--space-2xs);
    font-size: var(--text-sm);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .marquee-track {
    width: 100%;
    flex-wrap: wrap;
    animation: none;
  }

  .marquee-track > :nth-child(n + 8) {
    display: none;
  }
}

@keyframes hero-enter {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes marquee {
  to {
    transform: translateX(-50%);
  }
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@media print {
  .site-header,
  .mobile-nav,
  .cmdk,
  .marquee,
  .hero-actions,
  .cta-actions,
  .foot-social {
    display: none !important;
  }

  body {
    background: var(--color-paper) !important;
    color: var(--color-ink) !important;
  }

  .hero,
  .section,
  .site-footer {
    min-height: auto;
    padding-block: var(--space-lg);
    break-inside: avoid;
  }
}