/* Mitekbro landing page.

   Two voices run through the design and should stay distinct:
   - pencil: graphite, dashed, italic. Anything AI has drafted, and work not done yet.
   - ink: solid blue, upright. Anything a person has approved, and what exists today.
   The red pen is only for a person's confirmation. */

:root {
  --paper: #ffffff;
  --mist: #f2f4f8;
  --text: #141a33;
  --text-2: #464d6b;
  --text-3: #626a88;
  --line: #e1e4ed;
  --line-strong: #c8cddc;
  --ink: #1f35c4;
  --ink-hover: #172897;
  --ink-soft: #e9ecfc;
  --on-ink: #ffffff;
  --deep: #141d73;
  --pencil: #656c86;
  --pencil-line: #9ba1b8;
  --red: #d42a3a;
  --grid: 31 53 196;
  --shadow: 0 1px 0 rgb(20 26 51 / 0.04), 0 32px 64px -36px rgb(31 53 196 / 0.45);

  --font-display: "Bricolage Grotesque", "Be Vietnam Pro", system-ui, sans-serif;
  --font-text: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", sans-serif;

  --wrap: 1200px;
  --gutter: clamp(16px, 4vw, 40px);
  --section: clamp(72px, 9vw, 120px);

  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #0f1226;
    --mist: #151a33;
    --text: #eef0fa;
    --text-2: #b9bed8;
    --text-3: #9298b8;
    --line: #262c4b;
    --line-strong: #383f66;
    --ink: #8c9bff;
    --ink-hover: #a9b3ff;
    --ink-soft: #1c2350;
    --on-ink: #0f1226;
    --deep: #1a2370;
    --pencil: #9aa1bc;
    --pencil-line: #5f668a;
    --red: #ff7884;
    --grid: 140 155 255;
    --shadow: 0 1px 0 rgb(0 0 0 / 0.25), 0 32px 64px -32px rgb(0 0 0 / 0.7);

    color-scheme: dark;
  }
}

/* Base */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font: 400 1.0625rem/1.65 var(--font-text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* `hidden` always wins over a component's display value. */
[hidden] {
  display: none !important;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  text-wrap: balance;
}

p,
dl,
dd,
blockquote {
  margin: 0;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

a {
  color: var(--ink);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
}

a:hover {
  text-decoration-thickness: 2px;
}

:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
  border-radius: 4px;
}

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

.wrap {
  width: 100%;
  max-width: calc(var(--wrap) + 2 * var(--gutter));
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.skip-link {
  position: absolute;
  z-index: 50;
  top: 8px;
  left: 8px;
  padding: 10px 16px;
  border-radius: 8px;
  background: var(--text);
  color: var(--paper);
  font-weight: 600;
  transform: translateY(-160%);
}

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

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45em;
  min-height: 44px;
  padding: 0.55em 1.1em;
  border: 1px solid transparent;
  border-radius: 10px;
  font: 600 0.9375rem/1.2 var(--font-text);
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.15s, border-color 0.15s, color 0.15s;
}

.btn--lg {
  min-height: 52px;
  padding-inline: 1.35em;
  font-size: 1rem;
}

.btn--ink {
  background: var(--ink);
  color: var(--on-ink);
}

.btn--ink:hover {
  background: var(--ink-hover);
}

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

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

.btn--paper {
  background: #ffffff;
  color: #141d73;
}

.btn--paper:hover {
  background: #e9ecfc;
}

.btn:disabled {
  opacity: 0.4;
  cursor: default;
}

.link-button {
  padding: 0;
  border: 0;
  background: none;
  color: var(--ink);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 0.22em;
  cursor: pointer;
}

/* Language hint */

.lang-hint {
  background: var(--text);
  color: var(--paper);
  font-size: 0.875rem;
}

.lang-hint__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 16px;
  min-height: 44px;
  padding-block: 8px;
}

.lang-hint a {
  color: inherit;
  font-weight: 600;
}

.lang-hint button {
  margin-left: auto;
  padding: 4px 12px;
  border: 1px solid color-mix(in srgb, var(--paper) 40%, transparent);
  border-radius: 8px;
  background: none;
  cursor: pointer;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--paper) 90%, transparent);
  backdrop-filter: saturate(1.4) blur(12px);
  -webkit-backdrop-filter: saturate(1.4) blur(12px);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: 68px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font: 700 1.3125rem/1 var(--font-display);
  letter-spacing: -0.025em;
  text-decoration: none;
}

.brand .mark {
  color: var(--ink);
  --mark-on: var(--on-ink);
}

.site-nav {
  display: flex;
  flex: 1;
  align-items: center;
  gap: 20px;
}

.site-nav ul {
  display: flex;
  gap: 4px;
  margin-left: auto;
}

.site-nav ul a {
  display: block;
  padding: 8px 12px;
  border-radius: 8px;
  color: var(--text-2);
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
}

.site-nav ul a:hover {
  background: var(--mist);
  color: var(--text);
}

.lang-switch {
  padding: 5px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--text-2);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
}

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

.menu-button {
  display: none;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  margin-left: auto;
  padding: 0 14px;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: none;
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
}

.menu-button__icon,
.menu-button__icon::before {
  display: block;
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
}

.menu-button__icon {
  position: relative;
  transform: translateY(-3px);
}

.menu-button__icon::before {
  content: "";
  position: absolute;
  top: 6px;
}

@media (max-width: 1000px) {
  .menu-button {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 16px;
    padding: 8px var(--gutter) 24px;
    border-bottom: 1px solid var(--line);
    background: var(--paper);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav ul {
    flex-direction: column;
    gap: 0;
    margin: 0;
  }

  .site-nav ul a {
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
    border-radius: 0;
    font-size: 1.0625rem;
  }

  .site-nav ul a:hover {
    background: none;
  }

  .lang-switch {
    align-self: flex-start;
  }

  .site-nav__cta {
    align-self: stretch;
  }
}

/* Hero */

.hero {
  padding-block: clamp(44px, 7vw, 96px) clamp(64px, 8vw, 112px);
  overflow: clip;
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: clamp(40px, 6vw, 88px);
  align-items: center;
}

.hero__title {
  font-size: clamp(2.5rem, 5.2vw, 4.4rem);
  font-weight: 750;
  font-variation-settings: "opsz" 96;
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.hero__title span {
  display: block;
}

/* The first sentence is what AI does (pencil), the second what people do (ink). */
.hero__title span:first-child {
  color: var(--pencil);
}

.hero__title span:last-child {
  color: var(--ink);
}

.hero__lead {
  max-width: 34em;
  margin-top: 28px;
  color: var(--text-2);
  font-size: clamp(1.0625rem, 1.35vw, 1.1875rem);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 36px;
}

.hero__note {
  margin-top: 28px;
  color: var(--text-3);
  font-size: 0.9375rem;
}

/* The ruled page of a Vietnamese school notebook (vở ô ly): squares with
   three finer lines inside each. */
.hero__visual {
  position: relative;
  isolation: isolate;
}

.hero__visual::before {
  content: "";
  position: absolute;
  inset: -56px -48px;
  z-index: -1;
  background-image:
    linear-gradient(to right, rgb(var(--grid) / 0.17) 1px, transparent 1px),
    linear-gradient(to bottom, rgb(var(--grid) / 0.17) 1px, transparent 1px),
    linear-gradient(to bottom, rgb(var(--grid) / 0.08) 1px, transparent 1px);
  background-size: 32px 32px, 32px 32px, 32px 8px;
  -webkit-mask-image: radial-gradient(closest-side, #000 60%, transparent);
  mask-image: radial-gradient(closest-side, #000 60%, transparent);
}

@media (max-width: 960px) {
  .hero__grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Review desk: the hero demo */

.desk {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--paper);
  box-shadow: var(--shadow);
}

.desk__tabs {
  display: flex;
  gap: 2px;
  padding: 6px 10px 0;
  overflow-x: auto;
  border-bottom: 1px solid var(--line);
  scrollbar-width: none;
}

.desk__tabs [role="tab"] {
  flex: none;
  margin-bottom: -1px;
  padding: 12px 12px 12px;
  border: 0;
  border-bottom: 2px solid transparent;
  background: none;
  color: var(--text-3);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
}

.desk__tabs [role="tab"]:hover {
  color: var(--text);
}

.desk__tabs [aria-selected="true"] {
  border-bottom-color: var(--ink);
  color: var(--text);
}

/* On phones the tabs share the width and wrap their labels instead of scrolling. */
@media (max-width: 480px) {
  .desk__tabs {
    padding-inline: 4px;
  }

  .desk__tabs [role="tab"] {
    flex: 1 1 0;
    min-width: 0;
    padding-inline: 6px;
    font-size: 0.8125rem;
    line-height: 1.25;
  }
}

/* Panels share one grid cell so switching tabs never changes the height. */
.desk__panels {
  display: grid;
}

.desk__panel {
  grid-area: 1 / 1;
  padding: 22px 24px 24px;
}

.desk__panel[hidden] {
  display: block !important;
  visibility: hidden;
}

.desk__source {
  color: var(--text-3);
  font-size: 0.8125rem;
}

.desk__doc {
  margin-top: 8px;
  padding: 12px 14px;
  border-radius: 10px;
  background: var(--mist);
  color: var(--text-2);
  font-size: 0.9375rem;
  line-height: 1.55;
}

.desk__doc--form {
  border-left: 3px solid var(--line-strong);
  font-weight: 500;
}

.desk__doc--bubble {
  display: inline-block;
  border-radius: 14px 14px 14px 4px;
}

.draft {
  margin-top: 14px;
  padding: 14px 16px 16px;
  border: 1.5px dashed var(--pencil-line);
  border-radius: 12px;
  color: var(--pencil);
  font-style: italic;
  transition: border-color 0.3s, color 0.3s, background-color 0.3s;
}

.draft__by {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.8125rem;
  font-style: normal;
  font-weight: 600;
}

.draft__stamp {
  display: none;
  align-items: center;
  gap: 4px;
  color: var(--red);
}

.draft__steps {
  display: grid;
  gap: 7px;
  margin-top: 10px;
  font-size: 0.9375rem;
  line-height: 1.5;
}

.draft__steps > li {
  position: relative;
  padding-left: 18px;
}

.draft__steps > li::before {
  content: "";
  position: absolute;
  top: 0.55em;
  left: 1px;
  width: 7px;
  height: 7px;
  border: 1.5px solid currentColor;
  border-radius: 50%;
}

/* Steps wait for site.js to reveal them; without scripting they just show. */
@media (scripting: enabled) {
  [data-step] {
    opacity: 0;
    transform: translateY(4px);
    transition: opacity 0.28s ease, transform 0.28s ease;
  }
}

[data-step].is-shown {
  opacity: 1;
  transform: none;
}

.scores {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px 18px;
  font-style: normal;
}

.scores div {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  padding: 2px 0;
  border-bottom: 1px dotted var(--pencil-line);
}

@media (max-width: 360px) {
  .scores {
    grid-template-columns: minmax(0, 1fr);
  }
}

.scores dt {
  font-size: 0.8125rem;
}

.scores dd {
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.draft__result {
  font-style: normal;
}

.band {
  margin-left: 4px;
  font: 700 1.5rem/1 var(--font-display);
}

.draft__reply {
  color: var(--text-2);
}

.decide {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.decide__status {
  color: var(--text-3);
  font-size: 0.8125rem;
}

.decide__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.stepper {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
}

.stepper button {
  width: 40px;
  height: 42px;
  border: 0;
  background: none;
  font-size: 1.25rem;
  cursor: pointer;
}

.stepper output {
  min-width: 2.6em;
  text-align: center;
  font: 700 1.125rem/1 var(--font-display);
  font-variant-numeric: tabular-nums;
}

.desk__done {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 16px;
  margin-top: 16px;
  font-size: 0.9375rem;
}

.desk__done p {
  display: flex;
  gap: 8px;
  max-width: 36em;
}

.desk__done .check {
  flex: none;
  margin-top: 0.15em;
  color: var(--red);
}

.desk__done:focus {
  outline: none;
}

/* A person approved the draft: pencil turns to ink. */
.desk__panel[data-state="approved"] .draft {
  border-style: solid;
  border-color: var(--ink);
  background: var(--ink-soft);
  color: var(--text);
  font-style: normal;
}

.desk__panel[data-state="approved"] .draft__steps > li::before {
  border-color: var(--ink);
  background: var(--ink);
}

.desk__panel[data-state="approved"] .scores div {
  border-bottom-style: solid;
  border-bottom-color: color-mix(in srgb, var(--ink) 30%, transparent);
}

.desk__panel[data-state="approved"] .draft__reply {
  color: var(--text);
}

.desk__panel[data-state="approved"] .draft__stamp {
  display: inline-flex;
}

.check path {
  stroke-dasharray: 24;
  stroke-dashoffset: 0;
}

.desk__panel[data-state="approved"] .check path {
  animation: ink-tick 0.5s ease-out both;
}

@keyframes ink-tick {
  from {
    stroke-dashoffset: 24;
  }
}

/* Sections */

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

.section--mist {
  background: var(--mist);
}

.section--rule {
  border-top: 1px solid var(--line);
}

.section--compact {
  padding-block: clamp(56px, 7vw, 88px);
  border-top: 1px solid var(--line);
}

.section__head {
  max-width: 44rem;
  margin-bottom: clamp(36px, 5vw, 56px);
}

.section__head h2 {
  font-size: clamp(2rem, 3.6vw, 3rem);
  line-height: 1.12;
  letter-spacing: -0.03em;
}

.section__head p {
  margin-top: 16px;
  color: var(--text-2);
  font-size: 1.125rem;
}

/* Capabilities */

.caps {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: clamp(32px, 6vw, 88px);
}

.cap {
  display: grid;
  align-content: start;
  gap: 10px;
  padding-block: 28px;
  border-top: 1px solid var(--line);
}

.cap h3 {
  font-size: 1.375rem;
  letter-spacing: -0.02em;
}

.cap p {
  max-width: 34em;
  color: var(--text-2);
}

.cap .cap__uses {
  color: var(--text-3);
  font-size: 0.875rem;
}

.cap__uses a {
  font-weight: 600;
}

@media (max-width: 760px) {
  .caps {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Partners: one slow, endless strip of logos */

.partners {
  padding-block: 28px 32px;
  border-top: 1px solid var(--line);
}

.partners__title {
  margin-bottom: 18px;
  color: var(--text-3);
  font: 500 0.9375rem/1.4 var(--font-text);
  letter-spacing: 0;
}

.marquee {
  overflow: hidden;
  -webkit-mask-image: linear-gradient(to right, transparent, #000 6%, #000 94%, transparent);
  mask-image: linear-gradient(to right, transparent, #000 6%, #000 94%, transparent);
}

/* Two identical runs of logos, each item spaced by its own padding, so
   moving the track by half its width lands exactly where it started. */
.marquee__track {
  display: flex;
  width: max-content;
  animation: marquee 42s linear infinite;
}

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

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

.partner {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-inline-end: 56px;
  color: var(--text-2);
  font: 600 1.125rem/1 var(--font-display);
  letter-spacing: -0.01em;
  white-space: nowrap;
  filter: grayscale(1);
  opacity: 0.75;
  transition: filter 0.2s, opacity 0.2s;
}

.partner:hover {
  filter: none;
  opacity: 1;
}

.partner__logo {
  width: 28px;
  height: 28px;
  object-fit: contain;
}

.partner__wordmark {
  width: auto;
  height: 26px;
}

/* A Simple Icons wordmark sits in a square box, so it needs more room. */
.partner__wordmark--square {
  height: 52px;
  margin-block: -13px;
}

@media (prefers-reduced-motion: reduce) {
  .marquee {
    -webkit-mask-image: none;
    mask-image: none;
  }

  .marquee__track {
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px 0;
    width: auto;
    padding-inline: var(--gutter);
    animation: none;
  }

  .partner[aria-hidden="true"] {
    display: none;
  }
}

/* Products: groups of cards on the home page */

/* Groups of more than two products take a full row; smaller ones pair up. */
.product-groups {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(48px, 6vw, 72px) 20px;
}

.product-group--wide {
  grid-column: 1 / -1;
}

.product-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 16px;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-strong);
}

.product-group__head h3 {
  font-size: 1.5rem;
  letter-spacing: -0.02em;
}

.product-group__head p {
  color: var(--text-3);
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

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

.product-group--wide .cards {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card__link {
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  gap: 6px;
  height: 100%;
  padding: 10px 10px 18px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--paper);
  color: inherit;
  text-decoration: none;
  transition: border-color 0.15s;
}

.card__link:hover {
  border-color: var(--ink);
}

.card__media {
  display: block;
  margin-bottom: 10px;
  overflow: hidden;
  border-radius: 10px;
  aspect-ratio: 16 / 10;
  background: var(--mist);
}

.card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
}

.card__name,
.card__tagline,
.card__more {
  padding-inline: 8px;
}

.card__name {
  font: 700 1.25rem/1.25 var(--font-display);
  letter-spacing: -0.02em;
}

.card__tagline {
  color: var(--text-2);
}

.card__more {
  margin-top: 8px;
  color: var(--ink);
  font-size: 0.9375rem;
  font-weight: 600;
}

.card__link:hover .card__more {
  text-decoration: underline;
  text-underline-offset: 0.22em;
}

/* A product without screenshots: its name on the ruled notebook page. */
.cover {
  display: grid;
  place-items: center;
  height: 100%;
  padding: 16px;
  background-color: var(--ink-soft);
  background-image:
    linear-gradient(to right, rgb(var(--grid) / 0.14) 1px, transparent 1px),
    linear-gradient(to bottom, rgb(var(--grid) / 0.14) 1px, transparent 1px),
    linear-gradient(to bottom, rgb(var(--grid) / 0.07) 1px, transparent 1px);
  background-size: 24px 24px, 24px 24px, 24px 6px;
  color: var(--ink);
  font: 750 clamp(1.25rem, 2.2vw, 1.75rem)/1.1 var(--font-display);
  letter-spacing: -0.03em;
  text-align: center;
}

@media (max-width: 960px) {
  .product-groups {
    grid-template-columns: minmax(0, 1fr);
  }

  .cards,
  .product-group .cards,
  .product-group--wide .cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 600px) {
  .cards,
  .product-group .cards,
  .product-group--wide .cards {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Product pages */

.product-hero {
  padding-block: clamp(36px, 6vw, 72px) clamp(56px, 7vw, 96px);
}

.product-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
  align-items: center;
  gap: clamp(32px, 5vw, 72px);
}

.product-hero__grid--text {
  grid-template-columns: minmax(0, 46rem);
}

.crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
  color: var(--text-3);
  font-size: 0.9375rem;
}

.crumbs a {
  font-weight: 600;
}

.product-hero h1 {
  font-size: clamp(2.4rem, 4.6vw, 3.75rem);
  font-variation-settings: "opsz" 96;
  line-height: 1.08;
  letter-spacing: -0.035em;
}

.product-hero__tagline {
  margin-top: 14px;
  color: var(--ink);
  font: 600 clamp(1.125rem, 1.6vw, 1.375rem)/1.35 var(--font-display);
  letter-spacing: -0.015em;
}

.product-hero__summary {
  max-width: 36em;
  margin-top: 18px;
  color: var(--text-2);
  font-size: 1.0625rem;
}

.product-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.product-hero .product__fact {
  margin-top: 28px;
}

.product__fact {
  padding-left: 14px;
  border-left: 3px solid var(--ink);
  font: 600 1.0625rem/1.45 var(--font-display);
  letter-spacing: -0.01em;
}

.product-hero__media {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow);
  aspect-ratio: 16 / 10;
  background: var(--mist);
}

.product-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
}

.section-title {
  margin-bottom: clamp(24px, 3vw, 36px);
  font-size: clamp(1.75rem, 3vw, 2.375rem);
  letter-spacing: -0.03em;
}

.shots {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.shot a {
  display: block;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 14px;
  aspect-ratio: 16 / 10;
  background: var(--paper);
}

.shot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  transition: transform 0.3s ease;
}

.shot a:hover img {
  transform: scale(1.015);
}

.shot figcaption {
  margin-top: 10px;
  color: var(--text-2);
  font-size: 0.9375rem;
}

.features {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px clamp(24px, 4vw, 48px);
}

.features li {
  display: grid;
  align-content: start;
  gap: 8px;
  padding-top: 16px;
  border-top: 2px solid var(--ink);
}

.features h3 {
  font-size: 1.1875rem;
  letter-spacing: -0.015em;
}

.features p {
  color: var(--text-2);
}

.cta-band h2 {
  max-width: 24em;
  font-size: clamp(1.75rem, 3.2vw, 2.5rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.cta-band p {
  max-width: 38em;
  margin-top: 14px;
  color: rgb(255 255 255 / 0.82);
  font-size: 1.0625rem;
}

.cta-band .btn {
  margin-top: 28px;
}

@media (max-width: 960px) {
  .product-hero__grid {
    grid-template-columns: minmax(0, 1fr);
  }

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

@media (max-width: 640px) {
  .shots,
  .features {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Business */

.solutions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  column-gap: clamp(28px, 4vw, 56px);
}

/* Each problem and answer share rows with their neighbours, so the ink
   strokes line up across a row however the problems wrap. */
.solution {
  display: grid;
  grid-row: span 2;
  grid-template-rows: subgrid;
  align-content: start;
  gap: 14px;
  margin-bottom: 44px;
}

.solution dt {
  font: 600 1.3125rem/1.3 var(--font-display);
  letter-spacing: -0.02em;
}

/* A short stroke of ink between the problem and the answer. */
.solution dd {
  padding-top: 14px;
  background: linear-gradient(var(--ink), var(--ink)) no-repeat top left / 28px 2px;
  color: var(--text-2);
}

.cases__title {
  margin-top: clamp(64px, 8vw, 96px);
  font-size: 1.5rem;
  letter-spacing: -0.02em;
}

.cases {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.case {
  display: grid;
  align-content: start;
  gap: 12px;
  padding: clamp(22px, 3vw, 32px);
  border-radius: 14px;
  background: var(--mist);
}

.case h4 {
  font-size: 1.375rem;
  letter-spacing: -0.02em;
}

.case p {
  color: var(--text-2);
}

.case__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}

.case__tags li {
  padding: 3px 10px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  color: var(--ink);
  font-size: 0.8125rem;
  font-weight: 600;
}

@media (max-width: 960px) {
  .solutions {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .solutions,
  .cases {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Process */

.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 32px;
}

.step {
  position: relative;
  padding-top: 60px;
}

.step__n {
  position: absolute;
  top: 0;
  left: 0;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1.5px solid var(--ink);
  border-radius: 50%;
  color: var(--ink);
  font: 700 1rem/1 var(--font-display);
}

/* The road ahead is still in pencil. */
.step::before {
  content: "";
  position: absolute;
  top: 20px;
  left: 52px;
  right: -20px;
  border-top: 1.5px dashed var(--pencil-line);
}

.step:last-child::before {
  display: none;
}

.step h3 {
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.step p {
  margin-top: 8px;
  color: var(--text-2);
}

@media (max-width: 960px) {
  .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 40px 32px;
  }

  .step::before {
    display: none;
  }
}

@media (max-width: 560px) {
  .steps {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Research */

.research {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.research li {
  display: grid;
  align-content: start;
  gap: 10px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--paper);
}

.research h3 {
  font-size: 1.1875rem;
  letter-spacing: -0.015em;
}

.research p {
  color: var(--text-2);
}

.research a {
  font-weight: 600;
}

.ongoing {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  margin-top: 32px;
}

.ongoing h3 {
  font: 600 0.9375rem/1.3 var(--font-text);
}

.ongoing ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.ongoing li {
  padding: 5px 12px;
  border: 1.5px dashed var(--pencil-line);
  border-radius: 999px;
  color: var(--pencil);
  font-size: 0.875rem;
  font-style: italic;
}

@media (max-width: 960px) {
  .research {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Technology logos */

.tech {
  display: grid;
  gap: 28px;
}

.tech__group {
  display: grid;
  grid-template-columns: 11rem minmax(0, 1fr);
  align-items: start;
  gap: 12px 20px;
}

.tech__group h3 {
  padding-top: 16px;
  color: var(--text-2);
  font: 600 0.9375rem/1.3 var(--font-text);
}

.tech__list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(104px, 1fr));
  gap: 10px;
}

.tech__list li {
  display: grid;
  justify-items: center;
  gap: 10px;
  padding: 16px 8px 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--text-2);
  font-size: 0.8125rem;
  font-weight: 500;
  line-height: 1.3;
  text-align: center;
}

.tech__logo {
  width: 30px;
  height: 30px;
  color: var(--text);
  fill: currentColor;
}

.tech__logo--initial {
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: var(--mist);
  font: 700 1rem/1 var(--font-display);
}

@media (max-width: 760px) {
  .tech__group {
    grid-template-columns: minmax(0, 1fr);
  }

  .tech__group h3 {
    padding-top: 0;
  }

  .tech__list {
    grid-template-columns: repeat(auto-fill, minmax(92px, 1fr));
  }
}

/* Contact: deep ink in both colour schemes. */

.contact {
  --line-on: rgb(255 255 255 / 0.3);

  background: var(--deep);
  color: #ffffff;
}

.contact a:not(.btn) {
  color: #ffffff;
}

.contact :focus-visible {
  outline-color: #ffffff;
}

.contact__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
  gap: clamp(40px, 6vw, 88px);
}

.contact__intro h2 {
  font-size: clamp(2rem, 3.6vw, 3rem);
  line-height: 1.12;
  letter-spacing: -0.03em;
}

.contact__intro p {
  max-width: 30em;
  margin-top: 16px;
  color: rgb(255 255 255 / 0.82);
  font-size: 1.125rem;
}

.contact .contact__direct {
  margin-top: 28px;
  font-size: 1rem;
}

.contact__direct a {
  font-weight: 600;
}

.form {
  display: grid;
  gap: 18px;
}

.form__row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.field {
  display: grid;
  align-content: start;
  gap: 6px;
}

.field label {
  font-size: 0.9375rem;
  font-weight: 600;
}

.field__optional {
  color: rgb(255 255 255 / 0.65);
  font-weight: 400;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  min-height: 48px;
  padding: 10px 14px;
  border: 1px solid var(--line-on);
  border-radius: 10px;
  background: rgb(255 255 255 / 0.08);
  color: #ffffff;
  line-height: 1.5;
}

.field select {
  appearance: none;
  padding-right: 40px;
  background-image:
    linear-gradient(45deg, transparent 50%, #ffffff 50%),
    linear-gradient(135deg, #ffffff 50%, transparent 50%);
  background-position: calc(100% - 20px) 21px, calc(100% - 15px) 21px;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}

.field select option {
  background: var(--deep);
  color: #ffffff;
}

.field textarea {
  min-height: 132px;
  resize: vertical;
}

.field input::placeholder,
.field textarea::placeholder {
  color: rgb(255 255 255 / 0.55);
}

.field input:focus-visible,
.field select:focus-visible,
.field textarea:focus-visible {
  outline: 2px solid #ffffff;
  outline-offset: 1px;
  border-color: transparent;
}

.field [aria-invalid="true"] {
  border-color: #ffb3bb;
}

.field__error {
  color: #ffccd2;
  font-size: 0.875rem;
}

.form__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
}

.form__note,
.form__status {
  color: rgb(255 255 255 / 0.75);
  font-size: 0.875rem;
}

.form__status:empty {
  display: none;
}

@media (max-width: 860px) {
  .contact__grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 560px) {
  .form__row {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Footer */

.site-footer {
  padding-block: 56px 32px;
}

.site-footer__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1.3fr) minmax(0, 1fr) minmax(0, 1fr);
  gap: 32px;
}

.site-footer__brand p {
  max-width: 22em;
  margin-top: 14px;
  color: var(--text-2);
}

.site-footer h2 {
  margin-bottom: 12px;
  color: var(--text-3);
  font: 600 0.875rem/1.3 var(--font-text);
  letter-spacing: 0;
}

.site-footer li {
  padding-block: 3px;
}

.site-footer li a {
  color: var(--text-2);
  text-decoration: none;
}

.site-footer li a:hover {
  color: var(--text);
  text-decoration: underline;
}

.site-footer__products ul {
  columns: 2;
  column-gap: 24px;
}

.site-footer__bottom {
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: var(--text-3);
  font-size: 0.875rem;
}

@media (max-width: 860px) {
  .site-footer__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 520px) {
  .site-footer__grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Motion */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}