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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 64px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--paper);
  color: var(--text-body);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

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

button { font: inherit; }

:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}
:focus:not(:focus-visible) { outline: none; }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-display);
  font-size: var(--text-base);
  padding: 12px 20px;
  border-radius: 0 0 var(--radius-md) 0;
}
.skip-link:focus {
  left: 0;
  text-decoration: none;
  color: var(--paper);
}

.shell {
  max-width: 1080px;
  margin: 0 auto;
  padding-inline: 40px;
}

.section { padding-block: 96px; }
.section--flush-top { padding-block: 0 96px; scroll-margin-top: 32px; }

.section--ink {
  background: var(--ink);
  color: var(--text-body-on-dark);
}

.overline {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: var(--tracking-caps);
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.section--ink .overline { color: var(--cobalt-300); }

.section-title {
  font-family: var(--font-display);
  font-weight: var(--weight-semibold);
  font-size: var(--text-3xl);
  letter-spacing: var(--tracking-display);
  line-height: var(--leading-tight);
  color: var(--ink);
  margin: 0 0 48px;
  text-wrap: balance;
}
.section--ink .section-title { color: var(--paper); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: var(--weight-medium);
  border: none;
  border-radius: var(--radius-md);
  background: var(--brand);
  color: var(--text-on-brand);
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--duration-fast) var(--ease-out);
}
.btn:hover { background: var(--brand-hover); color: var(--text-on-brand); text-decoration: none; }
.btn:active { background: var(--brand-active); }
.btn:disabled { background: var(--brand-disabled); cursor: not-allowed; }

.btn--sm { height: 32px; padding: 0 14px; font-size: var(--text-base); }
.btn--md { height: 40px; padding: 0 18px; font-size: 16px; }
.btn--lg { height: 48px; padding: 0 22px; font-size: var(--text-md); }

.btn--on-brand { background: var(--neutral-0); color: var(--ink); }
.btn--on-brand:hover { background: var(--neutral-100); color: var(--ink); }
.btn--on-brand:active { background: var(--neutral-200); }

.btn > [aria-hidden] {
  transition: transform var(--duration-fast) var(--ease-out);
}
.btn:hover > [aria-hidden] { transform: translateX(4px); }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: var(--text-md);
  font-weight: var(--weight-medium);
  color: var(--cobalt-600);
  transition: gap var(--duration-fast) var(--ease-out),
              color var(--duration-fast) var(--ease-out);
}
.link-arrow:hover { gap: 14px; color: var(--cobalt-700); text-decoration: none; }

.card {
  background: var(--surface-card);
  border: var(--border-width) solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: 24px;
  height: 100%;
  transition: border-color var(--duration-fast) var(--ease-out);
}
.card:hover { border-color: var(--border-strong); }

.card__overline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: var(--tracking-caps);
  text-transform: uppercase;
  color: var(--cobalt-600);
  margin-bottom: 14px;
}
.card__overline svg { flex-shrink: 0; }

.card__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-display);
  line-height: var(--leading-snug);
  color: var(--ink);
  margin: 0 0 10px;
  text-wrap: pretty;
}

.card__body {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--text-body);
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.field__label {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--ink);
}
.field__control {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--ink);
  background: var(--surface-card);
  border: var(--border-width) solid var(--border-strong);
  border-radius: var(--radius-md);
  padding: 10px 12px;
  outline: none;
  width: 100%;
  transition: border-color var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out);
}
.field__control::placeholder { color: var(--neutral-400); }
.field__control:focus {
  border-color: var(--focus-ring);
  box-shadow: var(--shadow-focus);
}
.field__control[aria-invalid='true'] {
  border-color: var(--danger);
}
textarea.field__control { resize: vertical; min-height: 96px; }

.field__error {
  font-size: var(--text-sm);
  color: var(--danger);
  min-height: 0;
}
.field__error:empty { display: none; }

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--paper);
  border-bottom: var(--border-width) solid var(--border-default);
}
.nav__inner {
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav__logo { display: flex; align-items: center; }
.nav__logo img { height: 28px; width: auto; }
.nav__logo:hover { text-decoration: none; }

.nav__links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
}
.nav__link {
  position: relative;
  color: var(--ink);
  transition: color var(--duration-fast) var(--ease-out);
}
.nav__link:hover { color: var(--cobalt-600); text-decoration: none; }
.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.2em;
  width: 100%;
  height: 2px;
  background: var(--cobalt-500);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--duration-fast) var(--ease-out);
}
.nav__link:hover::after,
.nav__link:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.hero { padding-block: 96px 88px; }

.hero__title {
  font-family: var(--font-display);
  font-weight: var(--weight-bold);
  font-size: var(--text-display);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-display);
  color: var(--ink);
  margin: 0 0 28px;
  max-width: 820px;
  text-wrap: balance;
}
.hero__line { display: block; }
.hero__line--accent {
  display: inline-block;
  position: relative;
  color: var(--cobalt-500);
}

.hero__lede {
  font-size: var(--text-md);
  line-height: var(--leading-body);
  max-width: 560px;
  margin: 0 0 36px;
}

.hero__actions {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.gap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 64px;
}
.gap-item__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  color: var(--paper);
  margin: 0 0 10px;
}
.gap-item__body {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
}

.manifesto {
  font-family: var(--font-display);
  font-weight: var(--weight-medium);
  font-size: var(--text-xl);
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-display);
  color: var(--paper);
  max-width: 820px;
  margin: 0;
  text-wrap: pretty;
}
.manifesto em { font-style: italic; color: var(--cobalt-300); }

.services-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.work__head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 48px;
}
.work__head .section-title { margin-bottom: 0; }

.work__controls { display: flex; gap: 8px; flex-shrink: 0; }

.icon-btn {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: var(--border-width) solid var(--border-strong);
  border-radius: var(--radius-md);
  background: var(--surface-card);
  color: var(--ink);
  font-size: 16px;
  cursor: pointer;
  transition: border-color var(--duration-fast) var(--ease-out),
              color var(--duration-fast) var(--ease-out);
}
.icon-btn:hover:not(:disabled) { border-color: var(--cobalt-500); color: var(--cobalt-600); }
.icon-btn:disabled { opacity: 0.4; cursor: not-allowed; }

.work__track {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: calc((100% - 40px) / 3);
  gap: 20px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  padding-bottom: 4px;
}
.work__track::-webkit-scrollbar { display: none; }

.case {
  background: var(--surface-card);
  border: var(--border-width) solid var(--border-default);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  scroll-snap-align: start;
  transition: border-color var(--duration-fast) var(--ease-out);
}
.case:hover { border-color: var(--border-strong); }

.case__media {
  height: 180px;
  background: var(--surface-tint);
  border-bottom: var(--border-width) solid var(--border-tint);
  overflow: hidden;
}
.case__img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: center;
  transition: transform var(--duration-slow) var(--ease-out);
}
.case__img--top { object-position: top; }
.case:hover .case__img { transform: scale(1.03); }

.case__body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}
.case__meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: var(--tracking-caps);
  text-transform: uppercase;
  color: var(--text-muted);
}
.case__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-display);
  line-height: var(--leading-snug);
  color: var(--ink);
  margin: 0;
}
.case__summary {
  margin: 0;
  font-size: 14px;
  line-height: var(--leading-body);
  flex: 1;
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.step { position: relative; padding-top: 22px; }
.step::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--cobalt-500);
  transform-origin: left;
}
.step__num {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--cobalt-600);
  margin-bottom: 10px;
}
.step__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  color: var(--ink);
  margin: 0 0 8px;
}
.step__body { margin: 0; font-size: 14px; line-height: var(--leading-body); }

.quotes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}
.quote { margin: 0; }
.quote blockquote {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--weight-medium);
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-display);
  color: var(--ink);
  text-wrap: pretty;
}
.quote figcaption {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.capabilities { padding-block: 80px; }
.capabilities .section-title { font-size: var(--text-2xl); margin-bottom: 36px; }

.stack-grid {
  display: grid;
  grid-template-columns: 120px 1fr;
  row-gap: 18px;
  column-gap: 32px;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  margin-bottom: 36px;
}
.stack-grid dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: var(--tracking-caps);
  text-transform: uppercase;
  color: var(--cobalt-300);
  padding-top: 4px;
}
.stack-grid dd { margin: 0; }

.capabilities__note {
  margin: 0;
  font-size: var(--text-base);
  color: var(--neutral-400);
  max-width: 560px;
}

.cta {
  background: var(--cobalt-500);
  padding-block: 96px;
}
.cta__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.cta__title {
  font-family: var(--font-display);
  font-weight: var(--weight-bold);
  font-size: var(--text-3xl);
  letter-spacing: var(--tracking-display);
  line-height: var(--leading-tight);
  color: var(--neutral-0);
  margin: 0 0 20px;
  text-wrap: balance;
}
.cta__body {
  font-size: var(--text-md);
  line-height: var(--leading-body);
  color: var(--cobalt-100);
  margin: 0 0 32px;
  max-width: 460px;
}
.cta__email {
  margin-top: 28px;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}
.cta__email a { color: var(--cobalt-100); }
.cta__email a:hover { color: var(--neutral-0); }
.cta :focus-visible { outline-color: var(--neutral-0); }

.form-panel {
  background: var(--surface-card);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.form-panel__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  color: var(--ink);
  margin: 0;
}
.form-panel form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-status {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px 0;
  text-align: center;
}
.form-status__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  color: var(--ink);
}
.form-status__body { font-size: 14px; color: var(--text-body); }

.form-error {
  font-size: 14px;
  color: var(--danger);
  background: var(--danger-bg);
  border-radius: var(--radius-md);
  padding: 10px 12px;
}

.is-hidden { display: none !important; }

.hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.footer {
  background: var(--ink);
  border-top: var(--border-width) solid var(--border-on-dark);
  padding-block: 32px;
}
.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.footer__logo { height: 18px; width: auto; }
.footer__links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
}
.footer__links a { color: var(--neutral-400); }
.footer__links a:hover { color: var(--paper); }
.footer__copy {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--neutral-500);
}

.js-motion [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
}
.js-motion [data-reveal].is-revealed {
  opacity: 1;
  transform: none;
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
  transition-delay: var(--reveal-delay, 0ms);
}

.js-motion .case.is-revealed {
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out),
              border-color var(--duration-fast) var(--ease-out);
  transition-delay: var(--reveal-delay, 0ms), var(--reveal-delay, 0ms), 0ms;
}

@keyframes vk-hero-in {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: none; }
}
.js-motion [data-hero-line] {
  animation: vk-hero-in 420ms var(--ease-out) backwards;
  animation-delay: var(--hero-delay, 0ms);
}

@keyframes vk-hero-rule {
  from { transform: scaleX(0); }
}
.js-motion .hero__line--accent::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.08em;
  width: 100%;
  height: 3px;
  background: var(--cobalt-500);
  transform: scaleX(1);
  transform-origin: left;
  animation: vk-hero-rule var(--duration-slow) var(--ease-out) backwards;
  animation-delay: calc(var(--hero-delay, 210ms) + 420ms);
}

.js-motion .step::before { transform: scaleX(0); }
.js-motion .step.is-revealed::before {
  transform: scaleX(1);
  transition: transform var(--duration-slow) var(--ease-out);
  transition-delay: calc(var(--reveal-delay, 0ms) + 200ms);
}

@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;
  }
  .js-motion [data-reveal] { opacity: 1; transform: none; }
}

@media (max-width: 1000px) {
  .hero__title { font-size: var(--text-4xl); }
  .section-title { font-size: var(--text-2xl); }
  .work__track { grid-auto-columns: calc((100% - 20px) / 2); }
  .process-grid { grid-template-columns: repeat(2, 1fr); gap: 32px 24px; }
  .cta__inner { gap: 40px; }
}

@media (max-width: 800px) {
  .shell { padding-inline: 24px; }
  .section { padding-block: 72px; }
  .section--flush-top { padding-block: 0 72px; }
  .hero { padding-block: 64px 64px; }
  .hero__title { font-size: var(--text-3xl); }
  .hero__lede { font-size: var(--text-base); }

  .nav__links { gap: 20px; }
  .nav__link { display: none; }

  .gap-grid { grid-template-columns: 1fr; gap: 28px; margin-bottom: 48px; }
  .manifesto { font-size: var(--text-lg); }
  .services-grid { grid-template-columns: 1fr; }
  .quotes-grid { grid-template-columns: 1fr; gap: 32px; }
  .stack-grid { grid-template-columns: 1fr; row-gap: 6px; }
  .stack-grid dd { margin-bottom: 12px; }
  .cta__inner { grid-template-columns: 1fr; }
  .cta__body { max-width: none; }

  .work__head { flex-direction: column; align-items: flex-start; gap: 20px; }
  .work__track { grid-auto-columns: 82%; }
}

@media (max-width: 520px) {
  .shell { padding-inline: 20px; }
  .hero__title { font-size: var(--text-2xl); }
  .hero__actions { gap: 16px; }
  .hero__actions .btn { width: 100%; }
  .process-grid { grid-template-columns: 1fr; }
  .work__track { grid-auto-columns: 88%; }
  .form-panel { padding: 24px; }
  .footer__inner { flex-direction: column; align-items: flex-start; gap: 16px; }
}