/* Formant Systems — warm systems studio palette */

:root {
  --color-bg: #fafaf7;
  --color-warm-bg: #f2efe8;
  --color-surface: #ffffff;
  --color-text: #111111;
  --color-text-muted: #4f4f4f;
  --color-text-light: #757575;
  --color-border: #e2ded3;
  --color-border-soft: #ebe7de;

  --color-green: #2f5d46;
  --color-green-hover: #18382b;
  --color-ink: #18382b;
  --color-clay: #b86b4b;
  --color-sand: #e7d8b8;
  --color-sage: #c9d8c0;

  --color-sand-panel: #f7f1e3;
  --color-form-bg: #f5f2eb;
  --color-lab-bg: #18382b;
  --color-lab-text: #fafaf7;
  --color-lab-muted: rgba(250, 250, 247, 0.72);

  --font-serif: Georgia, "Times New Roman", Times, serif;
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;

  --max-width: 72rem;
  --narrow-width: 42rem;
  --fit-panel-width: 42rem;
  --header-height: 4.5rem;

  --radius: 4px;
  --transition: 0.22s ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

/* Formant mark — 2×2 grid motif */

.formant-mark {
  display: inline-grid;
  grid-template-columns: repeat(2, 5px);
  gap: 2px;
  flex-shrink: 0;
}

.formant-mark span {
  width: 5px;
  height: 5px;
  border-radius: 1px;
}

.formant-mark span:nth-child(1) {
  background-color: var(--color-green);
}

.formant-mark span:nth-child(2) {
  background-color: var(--color-clay);
}

.formant-mark span:nth-child(3) {
  background-color: var(--color-border);
}

.formant-mark span:nth-child(4) {
  background-color: #c4bfb4;
}

.formant-mark--hero {
  margin-bottom: var(--space-md);
}

.formant-mark--eyebrow {
  grid-template-columns: repeat(2, 4px);
  gap: 1.5px;
}

.formant-mark--eyebrow span {
  width: 4px;
  height: 4px;
}

.formant-mark--light span:nth-child(1) {
  background-color: var(--color-sage);
}

.formant-mark--light span:nth-child(2) {
  background-color: var(--color-sand);
}

.formant-mark--light span:nth-child(3) {
  background-color: rgba(250, 250, 247, 0.35);
}

.formant-mark--light span:nth-child(4) {
  background-color: rgba(250, 250, 247, 0.2);
}

/* Layout */

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-md);
}

.narrow {
  max-width: var(--narrow-width);
  margin-inline: auto;
}

/* Typography */

h1, h2, h3 {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--color-text);
}

h1 {
  font-size: clamp(2rem, 4.5vw, 3rem);
  line-height: 1.2;
}

h2.section-title {
  font-size: clamp(1.625rem, 3vw, 2.125rem);
  margin-bottom: var(--space-md);
  line-height: 1.25;
}

h3 {
  font-size: 1.1875rem;
  margin-bottom: var(--space-xs);
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: var(--space-sm);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.section-eyebrow--green {
  color: var(--color-green);
}

.section-eyebrow--clay {
  color: var(--color-clay);
}

.section-eyebrow--light {
  color: var(--color-sage);
}

.section-intro {
  max-width: 52ch;
  margin-bottom: var(--space-lg);
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--color-text-muted);
}

#services .section-intro {
  margin-bottom: 2.75rem;
}

.lead {
  font-size: 1.125rem;
  line-height: 1.85;
  color: var(--color-text-muted);
}

.supporting {
  margin-top: var(--space-md);
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--color-text-muted);
}

.narrow-text {
  max-width: var(--narrow-width);
}

.text-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 2px;
  transition: color var(--transition), border-color var(--transition);
}

.text-link:hover {
  color: var(--color-text);
  border-color: var(--color-text);
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0.8125rem 1.625rem;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition:
    background-color var(--transition),
    border-color var(--transition),
    color var(--transition);
}

.btn-primary {
  background-color: var(--color-green);
  color: #fff;
  border-color: var(--color-green);
  font-weight: 500;
  line-height: 1.4;
}

.btn-primary:hover {
  background-color: var(--color-green-hover);
  border-color: var(--color-green-hover);
}

.btn-full {
  width: 100%;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background-color: rgba(250, 250, 247, 0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: var(--space-sm);
  min-width: 0;
}

/* Brand logo */

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  text-decoration: none;
  color: inherit;
}

.logo.brand-logo {
  min-width: 0;
  flex-shrink: 1;
}

.brand-mark {
  display: grid;
  grid-template-columns: repeat(2, 7px);
  grid-template-rows: repeat(2, 7px);
  gap: 3px;
  flex-shrink: 0;
  transform: translateY(-2px);
}

.mark-dot {
  width: 7px;
  height: 7px;
  border-radius: 2px;
  display: block;
}

.mark-green { background-color: var(--color-green); }
.mark-clay { background-color: var(--color-clay); }
.mark-sand { background-color: var(--color-sand); }
.mark-sage { background-color: var(--color-sage); }

.brand-wordmark {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.brand-logo--header .brand-mark {
  transform: translateY(-1px);
}

.brand-logo--header .brand-wordmark--single .brand-name {
  font-family: var(--font-serif);
  font-size: 1.1875rem;
  font-weight: 400;
  letter-spacing: -0.015em;
  color: var(--color-text);
  line-height: 1.2;
  white-space: nowrap;
}

.brand-logo--footer .brand-name {
  font-family: var(--font-sans);
  font-size: 1.375rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--color-text);
}

.brand-logo--footer .brand-mark {
  grid-template-columns: repeat(2, 8px);
  grid-template-rows: repeat(2, 8px);
  gap: 4px;
}

.brand-logo--footer .mark-dot {
  width: 8px;
  height: 8px;
}

.brand-logo--footer .brand-sub {
  align-self: flex-end;
  margin-top: 2px;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 400;
  color: var(--color-green);
  letter-spacing: -0.02em;
}

.footer-logo.brand-logo {
  margin: 0;
}

.site-nav {
  display: none;
  gap: var(--space-lg);
}

.site-nav a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text);
  line-height: 1.45;
  opacity: 0.92;
  transition: color var(--transition), opacity var(--transition);
}

.site-nav a:hover {
  color: var(--color-green);
  opacity: 1;
}

.site-header.nav-open .site-nav a {
  font-size: 1rem;
  opacity: 1;
}

.header-cta {
  display: none;
  flex-shrink: 0;
  white-space: nowrap;
  font-size: 0.875rem;
  padding: 0.75rem 1.25rem;
}

.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 2rem;
  height: 2rem;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 1px;
  background-color: var(--color-text);
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle[aria-expanded="true"] span:first-child {
  transform: translateY(3.5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:last-child {
  transform: translateY(-3.5px) rotate(-45deg);
}

.site-header.nav-open .site-nav {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: var(--header-height);
  left: 0;
  right: 0;
  padding: var(--space-md);
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  gap: var(--space-md);
}

/* Hero */

.hero {
  position: relative;
  padding-block: var(--space-xl) var(--space-2xl);
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle, rgba(184, 107, 75, 0.07) 1px, transparent 1px),
    linear-gradient(rgba(226, 222, 211, 0.35) 1px, transparent 1px),
    linear-gradient(90deg, rgba(226, 222, 211, 0.35) 1px, transparent 1px);
  background-size: 24px 24px, 64px 64px, 64px 64px;
  opacity: 0.65;
  pointer-events: none;
  mask-image: linear-gradient(to bottom, black 0%, black 65%, transparent 100%);
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero-grid {
  display: grid;
  gap: var(--space-xl);
  align-items: center;
}

.hero-content {
  max-width: 36rem;
}

.hero-sub {
  margin-top: var(--space-md);
  max-width: 56ch;
  font-size: 1.125rem;
  line-height: 1.85;
  color: var(--color-text);
  opacity: 0.82;
}

.hero-actions {
  margin-top: var(--space-lg);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-md);
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-md);
}

.hero-credibility {
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--color-text-muted);
  max-width: 36ch;
}

/* System map card */

.system-map-card {
  position: relative;
  max-width: 26rem;
  width: 100%;
}

.system-map-shadow {
  position: absolute;
  inset: 8px -8px -8px 8px;
  border-radius: var(--radius);
  background-color: rgba(242, 239, 232, 0.85);
  z-index: 0;
}

.system-map-shadow::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
  background-color: rgba(231, 216, 184, 0.25);
}

.system-map-inner {
  position: relative;
  z-index: 1;
  padding: var(--space-lg) var(--space-lg) 2rem;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: border-color var(--transition);
}

.system-map-card:hover .system-map-inner {
  border-color: #cfc9bc;
}

.system-map-label {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-md);
}

.system-map {
  position: relative;
  display: grid;
  gap: 1.75rem;
}

.system-map::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(
    to bottom,
    var(--color-clay) 0%,
    var(--color-sage) 33%,
    var(--color-sand) 66%,
    var(--color-green) 100%
  );
  opacity: 0.45;
  pointer-events: none;
}

.system-row {
  position: relative;
  display: grid;
  grid-template-columns: 16px 110px 1fr;
  column-gap: 0.875rem;
  align-items: center;
}

.system-marker {
  width: 10px;
  height: 10px;
  border-radius: 2px;
  z-index: 1;
  justify-self: center;
}

.system-row--clay .system-marker { background-color: var(--color-clay); }
.system-row--sage .system-marker { background-color: var(--color-sage); border: 1px solid #b5c4ad; }
.system-row--sand .system-marker { background-color: var(--color-sand); border: 1px solid #d4c5a5; }
.system-row--green .system-marker { background-color: var(--color-green); }

.system-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text);
  opacity: 0.65;
  line-height: 1.35;
}

.system-value {
  font-size: 1rem;
  line-height: 1.45;
  color: var(--color-text);
  opacity: 0.88;
}

.system-value--strong {
  font-weight: 600;
  color: var(--color-text);
  opacity: 1;
}

.system-map-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border-soft);
}

.system-map-tags li {
  font-size: 0.8125rem;
  color: var(--color-text);
  opacity: 0.72;
  padding: 0.375rem 0.6875rem;
  border: 1px solid var(--color-border);
  border-radius: 100px;
  background-color: var(--color-bg);
  line-height: 1.4;
}

.system-map-footer {
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
  font-size: 0.8125rem;
  color: var(--color-text);
  opacity: 0.85;
  line-height: 1.7;
}

/* Sections */

section[id] {
  scroll-margin-top: calc(var(--header-height) + 0.75rem);
}

.section {
  padding-block: var(--space-xl);
  border-bottom: 1px solid var(--color-border);
}

.section-muted {
  background-color: var(--color-warm-bg);
}

.section-cta {
  background-color: var(--color-surface);
}

.section-lab {
  padding-block: var(--space-lg);
  background-color: var(--color-bg);
}

/* Service cards */

.card-grid {
  display: grid;
  gap: var(--space-md);
}

.card {
  position: relative;
  padding: 1.5rem 1.375rem 2rem;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: border-color var(--transition), transform var(--transition);
}

.card:hover {
  transform: translateY(-2px);
}

.card-accent {
  position: absolute;
  top: 0;
  left: 0;
  width: 2.5rem;
  height: 2px;
  border-radius: var(--radius) 0 0 0;
  transition: width var(--transition);
}

.card:hover .card-accent {
  width: 3.5rem;
}

.card-service:nth-child(1) .card-accent { background-color: var(--color-clay); }
.card-service:nth-child(2) .card-accent { background-color: var(--color-green); }
.card-service:nth-child(3) .card-accent { background-color: var(--color-sand); }
.card-service:nth-child(3) .card-accent { height: 2px; box-shadow: 0 0 0 1px #d4c5a5; }
.card-service:nth-child(4) .card-accent { background-color: var(--color-sage); }
.card-service:nth-child(5) .card-accent { background-color: var(--color-ink); }

.card-service:nth-child(1):hover { border-color: rgba(184, 107, 75, 0.45); }
.card-service:nth-child(2):hover { border-color: rgba(47, 93, 70, 0.4); }
.card-service:nth-child(3):hover { border-color: rgba(212, 197, 165, 0.9); }
.card-service:nth-child(4):hover { border-color: rgba(201, 216, 192, 0.9); }
.card-service:nth-child(5):hover { border-color: rgba(45, 42, 38, 0.25); }

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

.service-number {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  margin-bottom: 0.875rem;
}

.card-service:nth-child(1) .service-number { color: var(--color-clay); }
.card-service:nth-child(2) .service-number { color: var(--color-green); }
.card-service:nth-child(3) .service-number { color: #9a8460; }
.card-service:nth-child(4) .service-number { color: #6d8a62; }
.card-service:nth-child(5) .service-number { color: var(--color-ink); }

.card p {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  line-height: 1.85;
}

.card-best-for {
  margin-top: 1.75rem;
  padding-top: 1.125rem;
  border-top: 1px solid var(--color-border-soft);
  font-size: 1rem !important;
  color: var(--color-text) !important;
  line-height: 1.75 !important;
}

.card-best-for span {
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.01em;
}

/* Section CTA row */

.section-cta-row {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.section-cta-row p {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1rem;
  color: var(--color-text-muted);
}

.cta-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background-color: var(--color-clay);
  flex-shrink: 0;
}

/* Problems — signal board */

.problems-grid {
  list-style: none;
  display: grid;
  gap: var(--space-md);
}

.problem-item {
  position: relative;
  padding: 1.25rem var(--space-md) 1.25rem 2.25rem;
  font-size: 1.1875rem;
  font-style: normal;
  color: var(--color-text);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  line-height: 1.75;
  transition: border-color var(--transition), transform var(--transition);
}

.problem-item::before {
  content: "\201C";
  position: absolute;
  left: 0.875rem;
  top: 0.625rem;
  font-family: var(--font-serif);
  font-size: 1.375rem;
  line-height: 1;
  color: var(--color-clay);
  opacity: 0.55;
}

.problem-item::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 1.25rem;
  height: 1.25rem;
  border-top: 2px solid transparent;
  border-right: 2px solid transparent;
  border-radius: 0 var(--radius) 0 0;
}

.problem-item:nth-child(odd)::after {
  border-top-color: rgba(201, 216, 192, 0.7);
  border-right-color: rgba(201, 216, 192, 0.7);
}

.problem-item:nth-child(even)::after {
  border-top-color: rgba(184, 107, 75, 0.35);
  border-right-color: rgba(184, 107, 75, 0.35);
}

.problem-item:hover {
  border-color: #cfc9bc;
  transform: translateY(-2px);
}

/* Fit panel */

.section-fit {
  background-color: var(--color-bg);
}

.fit-panel {
  max-width: var(--fit-panel-width);
  margin-inline: auto;
  padding: var(--space-xl) var(--space-lg) 2.75rem;
  text-align: center;
  background-color: var(--color-sand-panel);
  border: 1px solid var(--color-border);
  border-top: 2px solid var(--color-green);
  border-radius: var(--radius);
}

.fit-panel .lead {
  font-size: 1.125rem;
  line-height: 1.85;
  max-width: 40rem;
  margin-inline: auto;
}

.fit-panel .supporting {
  color: var(--color-text-muted);
}

.fit-panel .section-eyebrow {
  justify-content: center;
}

.fit-panel .section-title {
  margin-bottom: var(--space-md);
}

.fit-panel .lead,
.fit-panel .supporting {
  margin-inline: auto;
}

.fit-panel .audience-tags {
  justify-content: center;
}

.fit-note {
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid rgba(226, 222, 211, 0.8);
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--color-text-muted);
}

/* Audience tags */

.audience-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-lg);
}

.audience-tags li {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  padding: 0.4375rem 0.875rem;
  border: 1px solid var(--color-border);
  border-radius: 100px;
  transition: border-color var(--transition);
}

.tag-sage {
  background-color: rgba(201, 216, 192, 0.35);
  border-color: rgba(201, 216, 192, 0.6);
}

.tag-sand {
  background-color: rgba(231, 216, 184, 0.45);
  border-color: rgba(212, 197, 165, 0.7);
}

.tag-neutral {
  background-color: var(--color-surface);
}

.audience-tags li:hover {
  border-color: #cfc9bc;
}

/* Process flow */

.process-flow {
  position: relative;
}

.process-grid {
  list-style: none;
  display: grid;
  gap: var(--space-md);
  position: relative;
}

.process-card {
  position: relative;
  padding: 2rem 1.375rem 2.25rem;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: border-color var(--transition), transform var(--transition);
  z-index: 1;
}

.process-card:hover {
  transform: translateY(-2px);
}

.process-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.125rem;
  padding: 0.3125rem 0.5625rem;
  margin-bottom: 1.125rem;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  border-radius: var(--radius);
}

.process-card--clay .process-number {
  color: var(--color-clay);
  background-color: rgba(184, 107, 75, 0.1);
  border: 1px solid rgba(184, 107, 75, 0.2);
}
.process-card--clay:hover { border-color: rgba(184, 107, 75, 0.45); }

.process-card--sage .process-number {
  color: #5a7352;
  background-color: rgba(201, 216, 192, 0.35);
  border: 1px solid rgba(201, 216, 192, 0.6);
}
.process-card--sage:hover { border-color: rgba(201, 216, 192, 0.9); }

.process-card--sand .process-number {
  color: #8a7550;
  background-color: rgba(231, 216, 184, 0.45);
  border: 1px solid rgba(212, 197, 165, 0.7);
}
.process-card--sand:hover { border-color: rgba(212, 197, 165, 0.9); }

.process-card--green .process-number {
  color: var(--color-green);
  background-color: rgba(47, 93, 70, 0.1);
  border: 1px solid rgba(47, 93, 70, 0.2);
}
.process-card--green:hover { border-color: rgba(47, 93, 70, 0.4); }

.process-card--ink .process-number {
  color: var(--color-ink);
  background-color: rgba(24, 56, 43, 0.08);
  border: 1px solid rgba(24, 56, 43, 0.15);
}
.process-card--ink:hover { border-color: rgba(24, 56, 43, 0.35); }

.process-name {
  font-family: var(--font-serif);
  font-size: 1.1875rem;
  margin-bottom: 0.875rem;
}

.process-card p {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  line-height: 1.85;
}

/* Principles */

.points-list {
  list-style: none;
  display: grid;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.principle-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding: 1.375rem 1.375rem 1.75rem;
  border: 1px solid var(--color-border);
  border-top-width: 2px;
  border-radius: var(--radius);
  background-color: var(--color-surface);
  transition: border-color var(--transition), transform var(--transition);
}

.principle-card:hover {
  transform: translateY(-2px);
}

.principle-card--green {
  border-top-color: var(--color-green);
}
.principle-card--green:hover { border-color: rgba(47, 93, 70, 0.35); border-top-color: var(--color-green); }

.principle-card--clay {
  border-top-color: var(--color-clay);
}
.principle-card--clay:hover { border-color: rgba(184, 107, 75, 0.35); border-top-color: var(--color-clay); }

.principle-card--sage {
  border-top-color: var(--color-sage);
}
.principle-card--sage:hover { border-color: rgba(201, 216, 192, 0.8); border-top-color: var(--color-sage); }

.principle-label {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.principle-card--green .principle-label { color: var(--color-green); }
.principle-card--clay .principle-label { color: var(--color-clay); }
.principle-card--sage .principle-label { color: #5a7352; }

.principle-text {
  font-size: 1.125rem;
  color: var(--color-text);
  line-height: 1.65;
}

/* Lab panel */

.lab-panel {
  padding: 2.75rem var(--space-lg);
  background-color: var(--color-lab-bg);
  border: 1px solid rgba(250, 250, 247, 0.08);
  border-radius: var(--radius);
}

.lab-panel .section-title {
  color: var(--color-lab-text);
}

.lab-panel .lead {
  color: rgba(250, 250, 247, 0.85);
  font-size: 1.125rem;
  line-height: 1.8;
}

.lab-chips {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
}

.lab-chips li {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(250, 250, 247, 0.8);
  padding: 0.375rem 0.6875rem;
  border: 1px solid rgba(250, 250, 247, 0.18);
  border-radius: 100px;
  background-color: rgba(250, 250, 247, 0.08);
}

.lab-panel .section-title {
  margin-bottom: var(--space-md);
}

/* CTA / Contact */

.cta-layout {
  display: grid;
  gap: var(--space-xl);
}

.cta-copy {
  max-width: 28rem;
}

.cta-copy .section-title {
  margin-bottom: var(--space-md);
  max-width: 22ch;
}

.cta-copy .lead {
  margin-bottom: var(--space-sm);
}

.cta-prompt {
  margin-top: var(--space-md);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
}

.contact-form-wrap {
  position: relative;
  padding-left: 0;
}

.contact-form {
  display: grid;
  gap: 1.375rem;
  padding: 2rem var(--space-lg);
  background-color: var(--color-form-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  width: 100%;
}

.contact-form .btn-primary {
  margin-top: var(--space-md);
  padding: 1rem 1.625rem;
  min-height: 3.125rem;
}

.form-group {
  display: grid;
  gap: 0.4375rem;
}

.form-group label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: 0.02em;
  line-height: 1.5;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.8125rem 0.875rem;
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.5;
  color: var(--color-text);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: border-color var(--transition);
  appearance: none;
}

.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%234f4f4f' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.875rem center;
  padding-right: 2.25rem;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-muted);
  opacity: 0.85;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-green);
}

.form-group textarea {
  resize: vertical;
  min-height: 7rem;
}

.form-microcopy {
  text-align: center;
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
}

.form-success {
  padding: var(--space-lg);
  text-align: center;
  font-size: 1rem;
  color: var(--color-text-muted);
}

/* Footer */

.site-footer {
  padding-block: var(--space-xl);
  border-top: 1px solid var(--color-border);
  background-color: var(--color-bg);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}


.footer-tagline {
  margin-top: var(--space-xs);
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--color-text-muted);
}

.footer-copyright {
  margin-top: var(--space-sm);
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--color-text-muted);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md) var(--space-lg);
}

.footer-nav a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
  opacity: 0.72;
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
  transition: color var(--transition), border-color var(--transition), opacity var(--transition);
}

.footer-nav a:hover {
  color: var(--color-green);
  border-color: rgba(47, 93, 70, 0.3);
  opacity: 1;
}

.footer-nav a:nth-child(2):hover {
  color: var(--color-clay);
  border-color: rgba(184, 107, 75, 0.3);
  opacity: 1;
}

/* Responsive */

@media (min-width: 640px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .card-grid--services .card-service:nth-child(2),
  .card-grid--services .card-service:nth-child(4) {
    margin-top: 0.75rem;
  }

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

  .problem-item:nth-child(2),
  .problem-item:nth-child(4),
  .problem-item:nth-child(6),
  .problem-item:nth-child(8) {
    transform: translateY(6px);
  }

  .problem-item:nth-child(2):hover,
  .problem-item:nth-child(4):hover,
  .problem-item:nth-child(6):hover,
  .problem-item:nth-child(8):hover {
    transform: translateY(4px);
  }

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

  .points-list {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
  }

  .section-cta-row {
    flex-direction: row;
    justify-content: center;
    gap: var(--space-md);
  }
}

@media (min-width: 768px) {
  .container {
    padding-inline: var(--space-lg);
  }

  .site-nav {
    display: flex;
  }

  .header-cta {
    display: inline-flex;
  }

  .nav-toggle {
    display: none;
  }

  .hero-grid {
    grid-template-columns: 1.2fr 0.8fr;
    gap: var(--space-2xl);
    align-items: center;
  }

  .hero-content {
    max-width: none;
  }

  .system-map-card {
    margin-left: auto;
    max-width: 28rem;
    min-width: 18rem;
  }

  .cta-layout {
    grid-template-columns: 1fr 1fr;
    align-items: start;
    gap: var(--space-2xl);
  }

  .fit-panel {
    max-width: 46rem;
  }

  .cta-copy {
    max-width: none;
  }

  .cta-copy .section-title {
    max-width: 30ch;
  }

  .contact-form-wrap {
    padding-left: var(--space-lg);
    border-left: 2px solid var(--color-clay);
    opacity: 1;
  }

  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-end;
  }
}

@media (min-width: 1024px) {
  h1 {
    font-size: clamp(2.25rem, 4vw, 3.375rem);
    line-height: 1.18;
  }

  .hero {
    padding-block: 6rem var(--space-2xl);
  }

  .section {
    padding-block: 5rem;
  }

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

  .process-flow::before {
    content: "";
    position: absolute;
    top: 2.75rem;
    left: 8%;
    right: 8%;
    height: 1px;
    background: repeating-linear-gradient(
      90deg,
      var(--color-border) 0,
      var(--color-border) 4px,
      transparent 4px,
      transparent 8px
    );
    z-index: 0;
    pointer-events: none;
  }

  .process-flow::after {
    content: "";
    position: absolute;
    bottom: 42%;
    left: 50%;
    width: 1px;
    height: 2.5rem;
    background: repeating-linear-gradient(
      to bottom,
      var(--color-border) 0,
      var(--color-border) 4px,
      transparent 4px,
      transparent 8px
    );
    transform: translateX(-50%);
    z-index: 0;
    pointer-events: none;
  }

  .process-grid {
    grid-template-columns: repeat(6, 1fr);
    gap: var(--space-md);
  }

  .process-card:nth-child(-n+3) {
    grid-column: span 2;
  }

  .process-card:nth-child(4) {
    grid-column: 2 / span 2;
  }

  .process-card:nth-child(5) {
    grid-column: 4 / span 2;
  }

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

  .card-grid--services .card-service:nth-child(1) {
    grid-column: 1 / span 2;
  }

  .card-grid--services .card-service:nth-child(2) {
    grid-column: 3 / span 2;
    margin-top: 0;
  }

  .card-grid--services .card-service:nth-child(3) {
    grid-column: 5 / span 2;
  }

  .card-grid--services .card-service:nth-child(4) {
    grid-column: 2 / span 2;
    margin-top: 0;
  }

  .card-grid--services .card-service:nth-child(5) {
    grid-column: 4 / span 2;
  }
}

/* Mobile production polish */

@media (max-width: 767px) {
  body {
    overflow-x: hidden;
  }

  .logo {
    max-width: calc(100% - 3rem);
  }

  .brand-logo--header .brand-wordmark--single .brand-name {
    font-size: 1.0625rem;
  }

  .brand-logo--footer .brand-name {
    font-size: 1.1875rem;
  }

  .brand-logo--footer .brand-sub {
    font-size: 0.875rem;
  }

  .brand-logo--header .brand-mark {
    grid-template-columns: repeat(2, 6px);
    grid-template-rows: repeat(2, 6px);
    gap: 2px;
  }

  .brand-logo--header .mark-dot {
    width: 6px;
    height: 6px;
  }

  .header-inner {
    gap: 0.5rem;
  }

  .hero {
    padding-block: 2.5rem var(--space-xl);
  }

  h1 {
    font-size: clamp(1.875rem, 7vw, 2.25rem);
    line-height: 1.22;
  }

  .hero-sub {
    font-size: 1.0625rem;
    max-width: none;
    opacity: 0.88;
  }

  .hero-grid {
    gap: 2rem;
  }

  .system-row {
    grid-template-columns: 16px 5.5rem 1fr;
    column-gap: 0.75rem;
  }

  .system-map {
    gap: 1.5rem;
  }

  .card {
    padding: 1.375rem 1.25rem 1.75rem;
  }

  .process-card {
    padding: 1.625rem 1.25rem 2rem;
  }

  .lab-panel {
    padding: 2rem var(--space-md);
  }

  .contact-form-wrap {
    width: 100%;
    max-width: 100%;
  }

  .contact-form {
    padding: 1.5rem var(--space-md);
  }

  .section {
    padding-block: 3rem;
  }

  .fit-panel {
    padding: var(--space-lg) var(--space-md) 2.25rem;
  }

  .btn {
    min-height: 2.875rem;
  }

  .site-header.nav-open .site-nav a {
    font-size: 1rem;
    padding-block: 0.25rem;
  }
}