/* ==========================================================================
   Unlok — Design tokens
   Warm white canvas, bold black type, tri-color accent (green / fuchsia / electric blue)
   Green is the functional UI accent; fuchsia + blue are decorative-only (ring art)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Instrument+Sans:wght@400;500;600;700&family=Instrument+Serif:ital@1&display=swap');

:root {
  /* Surfaces */
  --bg: #fdfbf9;
  --bg-soft: #f4efe8;
  --surface: #ffffff;
  --surface-raised: #ffffff;
  --line: rgba(17, 16, 15, 0.1);
  --line-strong: rgba(17, 16, 15, 0.22);

  /* Text */
  --text: #141311;
  --text-soft: #57534c;
  --gray: #8a8579;

  /* Dark panels (Problem / CTA feature sections) */
  --ink: #141311;
  --on-ink: #fdfbf9;
  --on-ink-soft: #b6b1a6;

  /* Accent — green is functional (buttons, links, focus); fuchsia + blue are decorative only */
  --accent: #178f5c;
  --accent-bright: #22c98a;
  --accent-soft: rgba(23, 143, 92, 0.16);

  --fuchsia: #e91e8c;
  --fuchsia-bright: #ff5cbb;
  --fuchsia-soft: rgba(233, 30, 140, 0.22);

  --blue: #1f5cff;
  --blue-bright: #5c8dff;
  --blue-soft: rgba(31, 92, 255, 0.2);

  --grain: url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");

  /* Type */
  --font-display: 'Instrument Sans', ui-sans-serif, system-ui, -apple-system, sans-serif;
  --font-accent: 'Instrument Serif', ui-serif, Georgia, serif;
  --font-body: 'Instrument Sans', ui-sans-serif, system-ui, -apple-system, sans-serif;

  --step-hero: clamp(2.75rem, 3vw + 2.1rem, 5.25rem);
  --step-h2: clamp(2rem, 1.6vw + 1.6rem, 3.1rem);
  --step-h3: clamp(1.3rem, 0.6vw + 1.15rem, 1.7rem);
  --step-lead: clamp(1.1rem, 0.4vw + 1rem, 1.35rem);
  --step-body: 1.0625rem;
  --step-small: 0.875rem;
  --step-label: 0.75rem;

  /* Space */
  --space-section: clamp(4.5rem, 8vw, 7.5rem);
  --space-block: clamp(2.25rem, 4.5vw, 4rem);
  --gutter: clamp(1.5rem, 5vw, 4rem);
  --radius-lg: 28px;
  --radius-md: 16px;
  --radius-sm: 10px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-fast: 200ms;
  --dur-med: 420ms;
}

/* ==========================================================================
   Reset
   ========================================================================== */

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

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

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

body {
  font-family: var(--font-body);
  font-size: var(--step-body);
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

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

ul { list-style: none; padding: 0; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--text);
}

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

/* Glass + grain utilities */

.glass-panel,
.on-ink-glass {
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(24px) saturate(160%);
  -webkit-backdrop-filter: blur(24px) saturate(160%);
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.grain {
  position: absolute;
  inset: 0;
  background-image: var(--grain);
  opacity: 0.05;
  mix-blend-mode: overlay;
  pointer-events: none;
}

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

.wrap {
  max-width: 1240px;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  padding-block: var(--space-section);
  position: relative;
}

.section-head {
  max-width: 640px;
  margin-bottom: var(--space-block);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-body);
  font-size: var(--step-label);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 1.1rem;
}

.eyebrow::before {
  content: '';
  width: 22px;
  height: 1px;
  background: currentColor;
}

h2 { font-size: var(--step-h2); }
h3 { font-size: var(--step-h3); }

.lead {
  font-size: var(--step-lead);
  color: var(--text-soft);
  line-height: 1.55;
}

.on-dark { color: var(--on-ink); }
.on-dark .eyebrow { color: var(--on-ink-soft); }
.on-dark .lead { color: var(--on-ink-soft); }

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.95rem 1.6rem;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--dur-fast) var(--ease-out), background var(--dur-fast), border-color var(--dur-fast), color var(--dur-fast);
  white-space: nowrap;
}

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

.btn-primary {
  background: var(--text);
  color: var(--bg);
}
.btn-primary:hover { background: var(--accent); }

.btn-ghost {
  background: transparent;
  border-color: var(--line-strong);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--text); }

.btn-ghost-dark {
  background: transparent;
  border-color: rgba(253, 251, 249, 0.3);
  color: var(--on-ink);
}
.btn-ghost-dark:hover { border-color: var(--on-ink); }

.btn svg { width: 16px; height: 16px; }

/* Reveal-on-scroll */

[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  filter: blur(6px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out), filter 0.9s var(--ease-out);
}
[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
}
[data-reveal-group] > * {
  transition-delay: calc(var(--i, 0) * 90ms);
}

@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; filter: none; transition: none; }
}

/* ==========================================================================
   Header
   ========================================================================== */

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  padding: 1.4rem 0;
  transition: padding var(--dur-med) var(--ease-out), background var(--dur-med), box-shadow var(--dur-med);
}

.site-header.is-scrolled {
  padding: 0.9rem 0;
  background: rgba(253, 251, 249, 0.82);
  backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--line);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}

.logo .mark { width: 30px; height: 24px; }

.logo .dot {
  color: var(--accent-bright);
  font-size: 1.7rem;
  line-height: 1;
  margin-left: -0.2rem;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 2.4rem;
}

.main-nav a:not(.btn) {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-soft);
  position: relative;
  transition: color var(--dur-fast);
}
.main-nav a:not(.btn):hover { color: var(--text); }
.main-nav a:not(.btn)::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -5px;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-fast) var(--ease-out);
}
.main-nav a:not(.btn):hover::after { transform: scaleX(1); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.4rem;
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-soft);
}
.lang-switch a { padding: 0.15rem 0.3rem; }
.lang-switch a.is-active { color: var(--text); text-decoration: underline; text-underline-offset: 3px; }
.lang-switch span { color: var(--line-strong); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.4rem;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  margin: 5px 0;
  transition: transform var(--dur-fast), opacity var(--dur-fast);
}

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

.hero {
  position: relative;
  padding-top: clamp(8rem, 14vw, 11rem);
  padding-bottom: clamp(3rem, 6vw, 5rem);
  overflow: hidden;
}

.hero-blob {
  position: absolute;
  z-index: -1;
  filter: blur(18px);
}

.hero-blob.b1 {
  top: -14%;
  right: -10%;
  width: min(48vw, 640px);
  opacity: 0.85;
  animation: float-slow 24s ease-in-out infinite;
}

.hero-blob.b2 {
  bottom: -20%;
  left: -14%;
  width: min(30vw, 400px);
  opacity: 0.75;
  animation: float-slow 28s ease-in-out infinite reverse;
}

@keyframes float-slow {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  50% { transform: translate(-2%, 3%) rotate(6deg); }
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.7fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: end;
}

.hero-kicker {
  font-size: var(--step-label);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 1.6rem;
  display: block;
}

.hero h1 {
  font-size: var(--step-hero);
  max-width: 15ch;
}

.hero h1.is-long {
  font-size: clamp(2.15rem, 2.1vw + 1.7rem, 3.5rem);
  max-width: 21ch;
}

.hero h1 em {
  font-family: var(--font-accent);
  font-style: italic;
  font-weight: 400;
  color: var(--accent);
}

.hero-aside {
  padding-bottom: 0.5rem;
}

.hero-aside p {
  font-size: var(--step-lead);
  color: var(--text-soft);
  margin-bottom: 1.8rem;
}

.hero-cta-row {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  flex-wrap: wrap;
}

.hero-note {
  font-size: var(--step-small);
  color: var(--text-soft);
}

/* ==========================================================================
   Credibility strip
   ========================================================================== */

.credibility {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding-block: clamp(2.5rem, 5vw, 3.5rem);
  text-align: center;
}

.credibility-statement {
  font-family: var(--font-accent);
  font-style: italic;
  font-size: clamp(1.25rem, 1.6vw + 0.9rem, 1.9rem);
  color: var(--text-soft);
  max-width: 34ch;
  margin-inline: auto;
  line-height: 1.35;
}

.credibility-statement .accent { color: var(--text); font-style: normal; font-family: var(--font-body); font-weight: 700; }

/* ==========================================================================
   Marquee
   ========================================================================== */

.marquee {
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  padding: 1.3rem 0;
  background: var(--bg-soft);
}

.marquee-track {
  display: flex;
  width: max-content;
  animation: marquee 32s linear infinite;
}

.marquee-track span {
  font-family: var(--font-accent);
  font-style: italic;
  font-size: 1.4rem;
  color: var(--text-soft);
  white-space: nowrap;
  padding-right: 3rem;
  display: flex;
  align-items: center;
  gap: 3rem;
}

.marquee-track span::after {
  content: '•';
  font-style: normal;
  color: var(--fuchsia);
  font-size: 1.4rem;
}

@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ==========================================================================
   Problem section
   ========================================================================== */

.problem {
  background: var(--ink);
  color: var(--on-ink);
  border-radius: var(--radius-lg);
  margin-inline: var(--gutter);
  width: calc(100% - 2 * var(--gutter));
  position: relative;
  overflow: hidden;
}

.problem::before,
.cta-band::before,
.approach-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: var(--grain);
  opacity: 0.05;
  mix-blend-mode: overlay;
  pointer-events: none;
}

.problem::after {
  content: '';
  position: absolute;
  top: -30%;
  right: -20%;
  width: 55%;
  height: 90%;
  background: radial-gradient(circle, var(--blue-soft) 0%, transparent 68%);
  pointer-events: none;
}

.problem .wrap { max-width: 1140px; position: relative; z-index: 1; }

.problem-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(2rem, 6vw, 5rem);
}

.symptom-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.symptom-list li {
  display: flex;
  align-items: baseline;
  gap: 1.2rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid rgba(253, 251, 249, 0.14);
  font-size: 1.05rem;
}

.symptom-list li:first-child { border-top: 1px solid rgba(253, 251, 249, 0.14); }

.symptom-list .idx {
  font-family: var(--font-accent);
  font-style: italic;
  color: var(--blue-bright);
  font-size: 0.95rem;
  min-width: 1.6rem;
}

/* ==========================================================================
   Pillars / Services
   ========================================================================== */

.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.6rem;
}

.pillar-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: clamp(1.8rem, 2.4vw, 2.4rem);
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
  transition: transform var(--dur-med) var(--ease-out), box-shadow var(--dur-med), border-color var(--dur-med);
}

.pillar-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 40px -18px rgba(20, 19, 17, 0.16), 0 0 0 1px var(--accent-soft);
  border-color: var(--line-strong);
}

.pillar-num {
  font-family: var(--font-accent);
  font-style: italic;
  font-size: 1.05rem;
  color: var(--accent);
}

.pillar-card h3 { margin-top: 0.2rem; }

.pillar-tag {
  display: inline-block;
  font-size: var(--step-label);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-soft);
  background: rgba(20, 19, 17, 0.06);
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  width: fit-content;
}

.pillar-card p { color: var(--text-soft); }

.pillar-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.pillar-list li {
  font-size: 0.92rem;
  color: var(--text-soft);
  display: flex;
  gap: 0.6rem;
}

.pillar-list li::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  margin-top: 0.55rem;
  flex-shrink: 0;
}

/* ==========================================================================
   Approach / About
   ========================================================================== */

.approach-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(2.5rem, 6vw, 6rem);
  align-items: start;
}

.approach-visual {
  position: sticky;
  top: 8rem;
  aspect-ratio: 4 / 5;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--line);
  display: flex;
  align-items: flex-end;
  padding: 2rem;
  overflow: hidden;
  isolation: isolate;
}

.approach-visual svg { width: 100%; height: auto; }

.approach-copy p {
  color: var(--text-soft);
  font-size: 1.05rem;
  margin-bottom: 1.4rem;
  max-width: 62ch;
}

.approach-copy p:first-of-type {
  font-family: var(--font-accent);
  font-style: italic;
  font-size: var(--step-lead);
  color: var(--text);
}

/* ==========================================================================
   Who we work with
   ========================================================================== */

.fit-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.6rem;
}

.fit-card {
  padding: clamp(1.8rem, 2.6vw, 2.6rem);
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
}

.fit-card.is-yes { background: var(--surface); }
.fit-card.is-no { background: transparent; }

.fit-card h4 {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1.2rem;
  color: var(--gray);
}

.fit-card.is-no h4 { color: var(--text-soft); }

.fit-card ul { display: flex; flex-direction: column; gap: 0.9rem; }

.fit-card li {
  display: flex;
  gap: 0.8rem;
  font-size: 1rem;
  line-height: 1.5;
}

.fit-card li svg { width: 18px; height: 18px; flex-shrink: 0; margin-top: 0.2rem; }
.fit-card.is-yes li svg { color: var(--accent); }
.fit-card.is-no li svg { color: var(--line-strong); }
.fit-card.is-no li { color: var(--text-soft); }

/* ==========================================================================
   CTA band
   ========================================================================== */

.cta-band {
  background: var(--ink);
  color: var(--on-ink);
  border-radius: var(--radius-lg);
  margin-inline: var(--gutter);
  width: calc(100% - 2 * var(--gutter));
  padding: clamp(2.5rem, 6vw, 4rem) clamp(1.5rem, 6vw, 4rem);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-band::after {
  content: '';
  position: absolute;
  top: -30%;
  left: 50%;
  transform: translateX(-50%);
  width: 70%;
  height: 160%;
  background: radial-gradient(circle, var(--accent-soft) 0%, transparent 65%);
  pointer-events: none;
}

.cta-inner {
  position: relative;
  z-index: 1;
  border-radius: var(--radius-md);
  padding: clamp(2rem, 5vw, 3.5rem) clamp(1.2rem, 4vw, 2.5rem);
}

.cta-band h2 {
  max-width: 18ch;
  margin-inline: auto;
  margin-bottom: 1.2rem;
  color: var(--on-ink);
}

.cta-band .lead {
  max-width: 46ch;
  margin-inline: auto;
  margin-bottom: 2.2rem;
}

.cta-band-actions {
  display: flex;
  justify-content: center;
  gap: 1.2rem;
  flex-wrap: wrap;
}

/* ==========================================================================
   Contact
   ========================================================================== */

#contacto, #contact { position: relative; }
#contacto::before, #contact::before {
  content: '';
  position: absolute;
  bottom: -14%;
  left: -16%;
  width: 42vw;
  height: 42vw;
  max-width: 500px;
  max-height: 500px;
  background: radial-gradient(circle, var(--fuchsia-soft) 0%, transparent 68%);
  z-index: -1;
  pointer-events: none;
}

.contact-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: clamp(2.5rem, 6vw, 5rem);
}

.contact-info dl {
  display: flex;
  flex-direction: column;
  gap: 1.8rem;
  margin-top: 2rem;
}

.contact-info dt {
  font-size: var(--step-label);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 0.35rem;
}

.contact-info dd {
  font-size: 1.05rem;
  color: var(--text);
}

.contact-info dd a:hover { color: var(--accent); }

.contact-form {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(1.8rem, 3vw, 3rem);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
}

.field {
  margin-bottom: 1.2rem;
}

.field label {
  display: block;
  font-size: var(--step-small);
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-soft);
}

.field .optional {
  font-weight: 400;
  color: var(--gray);
  text-transform: none;
  letter-spacing: 0;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  border: 1px solid var(--line-strong);
  background: var(--bg);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
  font-size: 1rem;
  transition: border-color var(--dur-fast);
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--accent);
  outline: none;
}

.field textarea { resize: vertical; min-height: 110px; }

.form-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 1.6rem;
}

.form-privacy {
  font-size: var(--step-small);
  color: var(--text-soft);
  max-width: 30ch;
}

.form-status {
  font-size: var(--step-small);
  margin-top: 1rem;
  display: none;
}
.form-status.is-visible { display: block; }
.form-status.is-success { color: var(--accent); font-weight: 600; }
.form-status.is-error { color: var(--text-soft); }

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

.site-footer {
  padding-block: var(--space-block);
  border-top: 1px solid var(--line);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 2rem;
  flex-wrap: wrap;
  padding-bottom: var(--space-block);
}

.footer-top p {
  max-width: 34ch;
  color: var(--text-soft);
  margin-top: 1rem;
}

.footer-links {
  display: flex;
  gap: clamp(2.5rem, 6vw, 5rem);
  flex-wrap: wrap;
}

.footer-col h5 {
  font-size: var(--step-label);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 1rem;
}

.footer-col ul { display: flex; flex-direction: column; gap: 0.7rem; }
.footer-col a { color: var(--text-soft); transition: color var(--dur-fast); }
.footer-col a:hover { color: var(--text); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  padding-top: 1.8rem;
  border-top: 1px solid var(--line);
  font-size: var(--step-small);
  color: var(--text-soft);
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-aside { max-width: 46ch; }
  .approach-grid { grid-template-columns: 1fr; }
  .approach-visual { position: static; aspect-ratio: 16/9; }
  .problem-grid { grid-template-columns: 1fr; gap: 2rem; }
  .pillars { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .main-nav { position: fixed; top: 68px; bottom: 0; right: 0; width: min(86%, 360px); background: var(--bg); flex-direction: column; align-items: flex-start; padding: 2rem var(--gutter); gap: 1.8rem; overflow-y: auto; box-shadow: -16px 0 40px -20px rgba(20, 19, 17, 0.18); opacity: 0; visibility: hidden; transition: opacity var(--dur-med) var(--ease-out), visibility 0s linear var(--dur-med); }
  .main-nav.is-open { opacity: 1; visibility: visible; transition: opacity var(--dur-med) var(--ease-out); }
  .nav-links { flex-direction: column; align-items: flex-start; gap: 1.6rem; width: 100%; }
  .nav-links .btn { width: 100%; justify-content: center; }
  .nav-toggle { display: block; }
  .fit-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-top { flex-direction: column; }
  .problem, .cta-band { margin-inline: 1rem; width: calc(100% - 2rem); }
}

@media (max-width: 480px) {
  .hero-cta-row { flex-direction: column; align-items: flex-start; }
}