/* ==========================================================================
   Zetavai website styles
   One stylesheet for every page. Colours and sizes are set as variables
   at the top (:root), so the whole site can be adjusted in one place.
   ========================================================================== */

/* Font: Albert Sans, self-hosted (no requests to Google) */
@font-face {
  font-family: "Albert Sans Variable";
  font-style: normal;
  font-display: swap;
  font-weight: 100 900;
  src: url(/assets/fonts/albert-sans-latin-ext.woff2) format("woff2-variations");
  unicode-range:
    U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304,
    U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB,
    U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Albert Sans Variable";
  font-style: normal;
  font-display: swap;
  font-weight: 100 900;
  src: url(/assets/fonts/albert-sans-latin.woff2) format("woff2-variations");
  unicode-range:
    U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC,
    U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212,
    U+2215, U+FEFF, U+FFFD;
}

:root {
  --black: #000000;
  --white: #ffffff;
  --ink: #141414;
  --muted: #5c5c5c;
  --line: #e2e2e2;
  --line-strong: #cfcfcf;
  --light: #f4f4f4;
  --on-black-muted: #a3a3a3;
  --on-black-line: #2a2a2a;
  --header: 72px;
  --max: 1200px;
  --gutter: 40px;
  --font:
    "Albert Sans Variable", ui-sans-serif, system-ui, -apple-system, "Segoe UI",
    sans-serif;
}
@media (max-width: 720px) {
  :root {
    --gutter: 20px;
    --header: 60px;
  }
}
* {
  box-sizing: border-box;
}
html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header) + 16px);
}
body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
@media (max-width: 720px) {
  body {
    font-size: 16px;
  }
}
img {
  display: block;
  max-width: 100%;
  height: auto;
}
a {
  color: inherit;
}
p {
  margin: 0;
}
h1,
h2,
h3 {
  margin: 0;
  font-weight: 300;
  letter-spacing: -0.025em;
  line-height: 1.08;
  color: inherit;
}
ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}
.container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}
:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 4px;
}
.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  z-index: 100;
  background: var(--white);
  color: var(--black);
  padding: 10px 16px;
  border-radius: 4px;
  font-weight: 500;
}
.skip-link:focus {
  top: 12px;
}
.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* type */
.t-h2 {
  font-size: clamp(30px, 4.2vw, 54px);
}
.t-lead {
  font-size: clamp(17px, 1.7vw, 21px);
  line-height: 1.6;
  color: var(--muted);
  max-width: 34em;
}
.t-small {
  font-size: 14px;
  line-height: 1.5;
  color: var(--muted);
}
.on-black .t-lead,
.on-black .t-small {
  color: var(--on-black-muted);
}
.plus {
  color: #9a9a9a;
  padding: 0 0.35em;
  font-weight: 300;
}

/* buttons and links */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 26px;
  border-radius: 4px;
  font: 500 16px/1 var(--font);
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition:
    background-color 0.2s,
    color 0.2s,
    border-color 0.2s;
  white-space: nowrap;
}
.btn-light {
  background: var(--white);
  color: var(--black);
}
.btn-light:hover {
  background: #dadada;
}
.btn-dark {
  background: var(--black);
  color: var(--white);
}
.btn-dark:hover {
  background: #333;
}
.btn-dark[disabled] {
  background: #555;
  cursor: progress;
}
.btn-line {
  background: transparent;
  color: var(--white);
  border-color: #5a5a5a;
}
.btn-line:hover {
  border-color: var(--white);
}
.btn-outline {
  background: transparent;
  color: var(--ink);
  border-color: #bdbdbd;
}
.btn-outline:hover {
  border-color: var(--ink);
}
.text-link {
  font-weight: 500;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 6px;
  text-decoration-color: #9a9a9a;
  padding: 10px 0;
  display: inline-block;
}
.text-link:hover {
  text-decoration-color: currentColor;
}

/* header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  height: var(--header);
  background: var(--black);
  color: var(--white);
  border-bottom: 1px solid var(--on-black-line);
}
.site-header .container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 15px;
  text-decoration: none;
  color: var(--white);
  flex-shrink: 0;
}
.brand img {
  display: block;
  height: 22px;
  width: auto;
}
.brand span {
  display: block;
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1;
}
.nav {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav a.nav-link {
  color: #c9c9c9;
  text-decoration: none;
  font-size: 15px;
  padding: 12px 0;
  border-bottom: 1px solid transparent;
}
.nav a.nav-link:hover {
  color: var(--white);
}
.nav a.nav-link[aria-current="page"],
.nav a.nav-link.is-section {
  color: var(--white);
  border-bottom-color: var(--white);
}
.nav .btn {
  min-height: 42px;
  padding: 0 18px;
  font-size: 14.5px;
}
.header-actions {
  display: none;
  align-items: center;
  gap: 4px;
}
.header-actions .btn {
  min-height: 40px;
  padding: 0 13px;
  font-size: 14px;
}
.menu-toggle {
  background: none;
  border: 0;
  color: var(--white);
  font: 500 15px/1 var(--font);
  min-height: 44px;
  min-width: 56px;
  padding: 0 4px;
  cursor: pointer;
  text-align: right;
}
.cta-short {
  display: none;
}
@media (max-width: 900px) {
  .header-actions {
    display: flex;
  }
  .nav {
    display: none;
    position: absolute;
    top: var(--header);
    left: 0;
    right: 0;
    background: var(--black);
    padding: 6px var(--gutter) 18px;
    border-bottom: 1px solid var(--on-black-line);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .nav.open {
    display: flex;
  }
  .nav a.nav-link {
    font-size: 18px;
    color: var(--white);
    padding: 13px 0;
    border-bottom: 1px solid var(--on-black-line);
  }
  .nav a.nav-link:last-of-type {
    border-bottom: 0;
  }
  .nav a.nav-link[aria-current="page"],
  .nav a.nav-link.is-section {
    border-bottom-color: var(--on-black-line);
    font-weight: 600;
  }
  .nav .btn {
    display: none;
  }
}
@media (max-width: 440px) {
  .brand span {
    font-size: 18px;
  }
}
@media (max-width: 374px) {
  .cta-long {
    display: none;
  }
  .cta-short {
    display: inline;
  }
}

/* sections */
.band {
  padding: clamp(64px, 10vw, 136px) 0;
}
.on-black {
  background: var(--black);
  color: var(--white);
}
.on-light {
  background: var(--light);
}
.head-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-end;
  gap: 12px 20px;
}
.section-intro {
  display: flex;
  flex-direction: column;
  gap: 18px;
  max-width: 46em;
}

/* hero */
.hero {
  background: var(--black);
  color: var(--white);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  right: -18%;
  top: -30%;
  width: 80%;
  height: 130%;
  background: radial-gradient(
    closest-side,
    rgba(255, 255, 255, 0.12),
    rgba(255, 255, 255, 0)
  );
  pointer-events: none;
}
.hero .container {
  position: relative;
  min-height: min(calc(100svh - var(--header)), 820px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 56px;
  padding-top: clamp(64px, 10vh, 120px);
  padding-bottom: 40px;
}
.hero-copy {
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.hero h1 {
  font-size: clamp(46px, 7.4vw, 108px);
  line-height: 1.02;
  letter-spacing: -0.035em;
  max-width: 11em;
}
.formula {
  font-size: clamp(18px, 1.8vw, 24px);
  color: var(--white);
}
.formula .plus {
  color: #777;
  padding: 0 0.4em;
}
.hero .t-lead {
  max-width: 30em;
  color: var(--on-black-muted);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 4px;
}
.hero-note {
  font-size: 14.5px;
  color: var(--on-black-muted);
}
.outcomes {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--on-black-line);
}
.outcomes div {
  padding: 22px 24px 0 0;
}
.outcomes div + div {
  padding-left: 24px;
  border-left: 1px solid var(--on-black-line);
}
.outcomes strong {
  display: block;
  font-weight: 500;
  font-size: 17px;
}
.outcomes span {
  color: var(--on-black-muted);
  font-size: 15px;
}
@media (prefers-reduced-motion: no-preference) {
  .hero-copy {
    animation: fade 1s ease-out both;
  }
}
@keyframes fade {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}
@media (max-width: 720px) {
  .hero .container {
    min-height: 0;
    gap: 44px;
    padding-top: 52px;
    padding-bottom: 28px;
  }
  .hero-actions .btn {
    flex: 1 1 auto;
  }
  .outcomes {
    grid-template-columns: 1fr;
  }
  .outcomes div,
  .outcomes div + div {
    padding: 14px 0;
    border-left: 0;
    border-bottom: 1px solid var(--on-black-line);
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: baseline;
  }
  .outcomes div:last-child {
    border-bottom: 0;
  }
  .outcomes strong {
    font-size: 16px;
  }
  .outcomes span {
    font-size: 14px;
    text-align: right;
  }
}

/* collapsible blocks: open on desktop, tap to open on mobile */
details.fold > summary {
  list-style: none;
  cursor: default;
}
details.fold > summary::-webkit-details-marker {
  display: none;
}
.fold-icon {
  display: none;
}
@media (max-width: 820px) {
  details.fold > summary {
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    min-height: 56px;
  }
  .fold-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    font-size: 24px;
    font-weight: 300;
    line-height: 1;
    color: var(--ink);
    transition: transform 0.2s;
  }
  details.fold[open] .fold-icon {
    transform: rotate(45deg);
  }
}

/* intro and disciplines */
.intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
  gap: 48px;
  align-items: start;
}
.intro p {
  font-size: clamp(17px, 1.7vw, 22px);
  line-height: 1.6;
  color: var(--muted);
  max-width: 32em;
}
.disciplines {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr) auto minmax(0, 1fr);
  gap: 0 28px;
  margin-top: clamp(40px, 6vw, 72px);
  border-top: 1px solid var(--line);
  padding-top: 36px;
}
.discipline summary h3 {
  font-size: clamp(24px, 2.4vw, 32px);
  font-weight: 400;
  letter-spacing: -0.02em;
}
.discipline .one {
  color: var(--muted);
  margin-top: 12px;
}
.discipline ul {
  margin-top: 18px;
}
.discipline li {
  padding: 10px 0;
  border-top: 1px solid var(--line);
  font-size: 15.5px;
}
.join {
  font-size: 32px;
  font-weight: 300;
  color: #b5b5b5;
  line-height: 1.1;
}
@media (max-width: 820px) {
  .intro {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .disciplines {
    grid-template-columns: 1fr;
    gap: 0;
    padding-top: 0;
    border-top: 0;
    margin-top: 32px;
  }
  .join {
    display: none;
  }
  .discipline {
    border-top: 1px solid var(--line);
  }
  .discipline:last-of-type {
    border-bottom: 1px solid var(--line);
  }
  .discipline summary {
    padding: 6px 0;
  }
  .discipline summary h3 {
    font-size: 22px;
  }
  .discipline .one {
    margin-top: 0;
    font-size: 15px;
  }
  .discipline ul {
    margin: 4px 0 16px;
  }
  .discipline li {
    padding: 9px 0;
    font-size: 15px;
  }
}

/* ecosystem diagram */
.eco {
  margin-top: clamp(36px, 5vw, 64px);
}
.eco-layers {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
.eco-node {
  position: relative;
  background: var(--white);
  border: 1px solid var(--ink);
  padding: 26px 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.eco-node::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -25px;
  width: 1px;
  height: 24px;
  background: var(--ink);
}
.eco-node h3 {
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1.25;
}
.eco-node .q {
  font-size: 15px;
  color: var(--muted);
}
.eco-node ul {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 15.5px;
}
.eco-base {
  margin-top: 24px;
  background: var(--black);
  color: var(--white);
  padding: 20px 24px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 6px 24px;
}
.eco-base strong {
  font-weight: 500;
  font-size: 19px;
}
.eco-base span {
  color: var(--on-black-muted);
  font-size: 15px;
}
@media (max-width: 820px) {
  .eco-layers {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .eco-node {
    padding: 16px 18px;
    gap: 2px;
  }
  .eco-node::after {
    bottom: -13px;
    height: 12px;
  }
  .eco-node h3 {
    font-size: 18px;
  }
  .eco-node ul {
    margin-top: 6px;
    font-size: 14.5px;
  }
  .eco-base {
    margin-top: 12px;
    padding: 16px 18px;
  }
  .eco-base strong {
    font-size: 17px;
  }
  .eco-base span {
    font-size: 14px;
  }
}

/* tracks */
.tracks {
  margin-top: clamp(32px, 5vw, 56px);
  border-top: 1px solid var(--ink);
}
.track-link {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr) auto;
  gap: 32px;
  align-items: baseline;
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
}
.track-link h3 {
  font-size: clamp(24px, 2.6vw, 34px);
}
.track-link p {
  color: var(--muted);
}
.track-link .go {
  font-weight: 500;
  text-decoration: underline;
  text-underline-offset: 6px;
  text-decoration-thickness: 1px;
  text-decoration-color: #9a9a9a;
  white-space: nowrap;
}
.track-link:hover .go {
  text-decoration-color: currentColor;
}
@media (max-width: 820px) {
  .track-link {
    grid-template-columns: 1fr;
    gap: 6px;
    padding: 20px 0;
  }
  .track-link h3 {
    font-size: 22px;
    font-weight: 400;
  }
  .track-link p {
    font-size: 15px;
  }
  .track-link .go {
    font-size: 15px;
    padding-top: 4px;
  }
}

/* steps */
.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 32px;
  margin-top: clamp(32px, 5vw, 64px);
}
.step {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 22px;
  border-top: 1px solid var(--line-strong);
}
.step .n {
  font-size: 15px;
  color: var(--muted);
}
.step h3 {
  font-size: 24px;
  font-weight: 400;
  letter-spacing: -0.015em;
}
.step p {
  color: var(--muted);
  font-size: 16px;
}
@media (max-width: 820px) {
  .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px 20px;
  }
  .step {
    padding-top: 16px;
    gap: 6px;
  }
  .step h3 {
    font-size: 19px;
    font-weight: 500;
  }
  .step p {
    font-size: 14.5px;
    line-height: 1.5;
  }
}

/* recent work */
.work {
  margin-top: clamp(28px, 4vw, 48px);
  border-top: 1px solid var(--ink);
}
.work-item {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.4fr) minmax(0, 1.3fr);
  gap: 32px;
  align-items: baseline;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}
.work-item h3 {
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1.3;
}
.work-item .status {
  display: inline-block;
  margin-left: 10px;
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0;
  color: var(--muted);
  border: 1px solid var(--line-strong);
  border-radius: 3px;
  padding: 1px 8px;
  vertical-align: 3px;
}
.work-item .what {
  color: var(--muted);
}
.work-item .stack {
  font-size: 16px;
}
@media (max-width: 820px) {
  .work-item {
    grid-template-columns: 1fr;
    gap: 4px;
    padding: 18px 0;
  }
  .work-item h3 {
    font-size: 18px;
  }
  .work-item .what {
    font-size: 15px;
  }
  .work-item .stack {
    font-size: 14.5px;
    padding-top: 4px;
  }
}

/* closing call to action */
.closing {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 32px;
  align-items: end;
}
.closing h2 {
  font-size: clamp(32px, 4.6vw, 60px);
}
.closing .side {
  display: flex;
  flex-direction: column;
  gap: 22px;
  align-items: flex-start;
}
@media (max-width: 820px) {
  .closing {
    grid-template-columns: 1fr;
  }
  .closing .side .btn {
    width: 100%;
  }
}

/* inner page heading */
.page-head {
  padding: clamp(56px, 9vw, 128px) 0 clamp(36px, 6vw, 72px);
}
.page-head .container {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.page-head h1 {
  font-size: clamp(38px, 5.4vw, 72px);
  max-width: 13em;
}
.page-body {
  padding-bottom: clamp(64px, 10vw, 136px);
}
.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-size: 14.5px;
  color: var(--muted);
}
.breadcrumb li + li::before {
  content: "/";
  padding-right: 6px;
  color: #aaa;
}
.breadcrumb a {
  color: var(--muted);
  text-decoration: none;
  padding: 6px 0;
  display: inline-block;
}
.breadcrumb a:hover {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 4px;
}
.breadcrumb [aria-current] {
  color: var(--ink);
  display: inline-block;
  padding: 6px 0;
}

/* service layers */
.panel-lead {
  font-size: clamp(19px, 2vw, 26px);
  font-weight: 300;
  line-height: 1.45;
  letter-spacing: -0.01em;
  max-width: 30em;
  margin-bottom: clamp(24px, 3.5vw, 40px);
}
.layers {
  border-top: 1px solid var(--ink);
}
.layer {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 32px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}
.layer-name :is(h2, h3) {
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1.3;
}
.layer-name p {
  color: var(--muted);
  font-size: 15px;
  margin-top: 4px;
}
.layer ul {
  columns: 2;
  column-gap: 32px;
}
.layer ul li {
  break-inside: avoid;
  margin-bottom: 10px;
  position: relative;
  padding-left: 20px;
  font-size: 16.5px;
  line-height: 1.5;
}
.layer li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75em;
  width: 9px;
  height: 1px;
  background: var(--ink);
}
@media (max-width: 820px) {
  .layer {
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 18px 0;
  }
  .layer-name :is(h2, h3) {
    font-size: 18px;
  }
  .layer-name p {
    font-size: 14px;
    margin-top: 0;
  }
  .layer ul {
    columns: 1;
  }
  .layer ul li {
    margin-bottom: 6px;
    font-size: 15px;
  }
}
.sub-heading {
  font-size: clamp(24px, 2.6vw, 32px);
}
.panel-cta {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 20px;
  color: var(--muted);
}

.options {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 40px;
  margin-top: 40px;
}
.options > div {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 20px;
  border-top: 1px solid var(--line-strong);
}
.options h3 {
  font-size: 24px;
  font-weight: 400;
}
.options p {
  color: var(--muted);
  font-size: 16px;
}
@media (max-width: 820px) {
  .options {
    grid-template-columns: 1fr;
    gap: 0;
    margin-top: 24px;
  }
  .options > div {
    padding: 16px 0;
    gap: 4px;
  }
  .options h3 {
    font-size: 19px;
    font-weight: 500;
  }
  .options p {
    font-size: 15px;
  }
}

/* FAQ */
.faq {
  border-top: 1px solid var(--ink);
  margin-top: clamp(24px, 4vw, 40px);
}
.faq details {
  border-bottom: 1px solid var(--line);
}
.faq summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding: 22px 0;
  min-height: 56px;
}
.faq summary::-webkit-details-marker {
  display: none;
}
.faq summary h3 {
  font-size: clamp(18px, 1.8vw, 22px);
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1.35;
}
.faq summary:hover h3 {
  text-decoration: underline;
  text-underline-offset: 5px;
  text-decoration-thickness: 1px;
}
.faq .icon {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  font-weight: 300;
  line-height: 1;
  transition: transform 0.2s;
}
.faq details[open] .icon {
  transform: rotate(45deg);
}
.faq .answer {
  padding: 0 56px 24px 0;
  color: var(--muted);
  max-width: 46em;
}
@media (max-width: 720px) {
  .faq summary {
    padding: 16px 0;
  }
  .faq summary h3 {
    font-size: 17px;
    font-weight: 500;
  }
  .faq .answer {
    padding: 0 0 18px;
    font-size: 15px;
  }
}

/* approach page */
.stage {
  display: grid;
  grid-template-columns: 100px minmax(0, 1fr) minmax(0, 1.2fr);
  gap: 32px;
  padding: 36px 0;
  border-top: 1px solid var(--line);
  align-items: baseline;
}
.stage:last-child {
  border-bottom: 1px solid var(--line);
}
.stage .n {
  font-size: 38px;
  font-weight: 300;
  color: #9a9a9a;
  line-height: 1;
}
.stage h2 {
  font-size: clamp(24px, 3vw, 38px);
}
.stage p {
  color: var(--muted);
  max-width: 30em;
}
@media (max-width: 820px) {
  .stage {
    grid-template-columns: 36px minmax(0, 1fr);
    gap: 4px 12px;
    padding: 18px 0;
  }
  .stage .n {
    font-size: 20px;
    grid-row: span 2;
  }
  .stage h2 {
    font-size: 21px;
    font-weight: 500;
  }
  .stage p {
    font-size: 15px;
  }
}
.principles {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 36px 64px;
  margin-top: 40px;
}
.principles div {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-top: 20px;
  border-top: 1px solid var(--on-black-line);
}
.principles h3 {
  font-size: 24px;
  font-weight: 400;
}
.principles p {
  color: var(--on-black-muted);
  font-size: 16px;
}
@media (max-width: 820px) {
  .principles {
    grid-template-columns: 1fr;
    gap: 0;
    margin-top: 24px;
  }
  .principles div {
    padding: 14px 0;
    gap: 2px;
  }
  .principles h3 {
    font-size: 18px;
    font-weight: 500;
  }
  .principles p {
    font-size: 15px;
  }
}

/* about page */
.founders {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}
.founder {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.founder .frame {
  background: var(--black);
  aspect-ratio: 4/4.3;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  overflow: hidden;
  position: relative;
}
.founder .frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    55% 55% at 50% 62%,
    rgba(255, 255, 255, 0.18),
    rgba(255, 255, 255, 0) 72%
  );
}
.founder .frame img {
  position: relative;
  height: 88%;
  width: auto;
  max-width: none;
  filter: grayscale(1) contrast(1.06);
  -webkit-mask-image: linear-gradient(
    to bottom,
    #000 70%,
    rgba(0, 0, 0, 0) 99%
  );
  mask-image: linear-gradient(to bottom, #000 70%, rgba(0, 0, 0, 0) 99%);
}
.founder .frame img.f-close {
  position: absolute;
  top: 12.5%;
  left: 50%;
  transform: translateX(-50%);
  height: 66%;
  -webkit-mask-image: linear-gradient(
    to bottom,
    #000 48%,
    rgba(0, 0, 0, 0.55) 72%,
    rgba(0, 0, 0, 0) 96%
  );
  mask-image: linear-gradient(
    to bottom,
    #000 48%,
    rgba(0, 0, 0, 0.55) 72%,
    rgba(0, 0, 0, 0) 96%
  );
}
.founder .meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-width: 30em;
  flex: 1;
}
.founder .meta .text-link {
  margin-top: auto;
}
.founder h2 {
  font-size: clamp(22px, 2.2vw, 28px);
  font-weight: 400;
  letter-spacing: -0.02em;
}
.founder .role {
  font-size: 15px;
  color: var(--ink);
}
.founder p.bio {
  color: var(--muted);
  font-size: 15.5px;
  line-height: 1.55;
  margin-bottom: 10px;
}
@media (max-width: 820px) {
  .founders {
    grid-template-columns: 1fr;
    gap: 0;
    border-top: 1px solid var(--line);
  }
  .founder {
    display: grid;
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 16px;
    align-items: center;
    padding: 16px 0;
    border-bottom: 1px solid var(--line);
  }
  .founder .frame {
    aspect-ratio: 1/1.08;
    align-items: flex-start;
  }
  .founder .frame img,
  .founder .frame img.f-close {
    -webkit-mask-image: none;
    mask-image: none;
  }
  .founder .frame img.f-full {
    height: 175%;
    margin-top: 8%;
  }
  .founder .frame img.f-close {
    position: relative;
    top: auto;
    left: auto;
    transform: none;
    height: 118%;
    margin-top: 6%;
  }
  .founder .meta {
    gap: 2px;
    flex: none;
  }
  .founder .meta .text-link {
    margin-top: 0;
    padding: 6px 0;
    font-size: 14px;
  }
  .founder h2 {
    font-size: 19px;
    font-weight: 500;
  }
  .founder .role {
    font-size: 14px;
  }
  .founder p.bio {
    font-size: 14px;
    line-height: 1.45;
    margin: 4px 0 0;
  }
}
.beliefs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 40px;
}
.beliefs div {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.beliefs h3 {
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.01em;
}
.beliefs p {
  color: var(--muted);
  font-size: 16px;
}
@media (max-width: 820px) {
  .beliefs {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .beliefs div {
    padding: 14px 0;
    border-top: 1px solid #d6d6d6;
    gap: 2px;
  }
  .beliefs h3 {
    font-size: 18px;
  }
  .beliefs p {
    font-size: 15px;
  }
}

/* contact page */
.contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  gap: clamp(40px, 7vw, 104px);
  align-items: start;
}
.contact-list {
  margin: 0;
}
.contact-list div {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}
.contact-list div:last-child {
  border-bottom: 1px solid var(--line);
}
.contact-list dt {
  color: var(--muted);
  font-size: 15px;
}
.contact-list dd {
  margin: 0;
  font-weight: 500;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
}
.contact-list a {
  text-decoration: none;
  padding: 2px 0;
}
.contact-list a:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
  background: var(--light);
  padding: clamp(20px, 4vw, 44px);
  border-radius: 6px;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.field label,
.field legend {
  font-size: 14.5px;
  font-weight: 500;
  color: var(--ink);
  padding: 0;
}
.field .opt {
  font-weight: 400;
  color: var(--muted);
}
.field input,
.field textarea {
  font: 400 17px/1.4 var(--font);
  color: var(--ink);
  background: var(--white);
  border: 1px solid #cdcdcd;
  border-radius: 4px;
  padding: 12px 14px;
  min-height: 50px;
  width: 100%;
}
.field input:focus,
.field textarea:focus {
  outline: 2px solid var(--ink);
  outline-offset: 0;
  border-color: var(--ink);
}
.field input[aria-invalid="true"],
.field textarea[aria-invalid="true"] {
  border-color: #b00020;
}
.field textarea {
  min-height: 110px;
  resize: vertical;
}
.field .error {
  font-size: 14px;
  color: #b00020;
  display: none;
}
.field.has-error .error {
  display: block;
}
.pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}
@media (max-width: 560px) {
  .pair {
    grid-template-columns: 1fr;
  }
}
fieldset {
  border: 0;
  margin: 0;
  padding: 0;
  min-width: 0;
}
.choices {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}
.choice input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
}
.choice span {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 14px;
  border: 1px solid #cdcdcd;
  border-radius: 4px;
  background: var(--white);
  font-size: 15px;
  cursor: pointer;
}
.choice input:checked + span {
  background: var(--black);
  color: var(--white);
  border-color: var(--black);
}
.choice input:focus-visible + span {
  outline: 2px solid var(--ink);
  outline-offset: 2px;
}
.consent {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--ink);
}
.consent input {
  width: 20px;
  height: 20px;
  margin: 2px 0 0;
  flex-shrink: 0;
  accent-color: var(--black);
}
.consent a {
  text-underline-offset: 3px;
}
.hp {
  position: absolute !important;
  left: -9999px !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.form-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}
.form-status {
  font-size: 15px;
  color: #b00020;
}
.form-status:empty {
  display: none;
}
@media (max-width: 560px) {
  .form-foot .btn {
    width: 100%;
  }
}
@media (max-width: 900px) {
  .contact {
    grid-template-columns: 1fr;
  }
  .contact > div:first-child {
    order: 2;
  }
}

/* text pages (privacy) */
.prose {
  max-width: 46em;
}
.prose h2 {
  font-size: clamp(22px, 2.4vw, 28px);
  font-weight: 400;
  margin: 44px 0 12px;
}
.prose p,
.prose li {
  color: #333;
  font-size: 16.5px;
}
.prose p + p {
  margin-top: 12px;
}
.prose ul {
  list-style: disc;
  padding-left: 22px;
  margin: 12px 0;
}
.prose li {
  margin: 6px 0;
}
.prose a {
  text-underline-offset: 3px;
}

/* footer */
.site-footer {
  background: var(--black);
  color: var(--white);
  padding: 64px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) repeat(3, minmax(0, 1fr));
  gap: 40px;
}
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.footer-brand img {
  height: 56px;
  width: auto;
  align-self: flex-start;
}
.footer-brand p {
  color: var(--on-black-muted);
  font-size: 15px;
  max-width: 22em;
}
.site-footer h2 {
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0;
  color: var(--on-black-muted);
  margin-bottom: 10px;
  line-height: 1.4;
}
.site-footer a,
.site-footer .plain {
  display: block;
  color: #e4e4e4;
  text-decoration: none;
  font-size: 15px;
  padding: 6px 0;
}
.site-footer a:hover {
  color: var(--white);
  text-decoration: underline;
  text-underline-offset: 4px;
}
.footer-base {
  margin-top: 56px;
  padding-top: 22px;
  border-top: 1px solid var(--on-black-line);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  font-size: 13.5px;
  color: var(--on-black-muted);
}
.footer-base nav {
  display: flex;
  gap: 20px;
}
.footer-base a {
  display: inline;
  padding: 4px 0;
  font-size: 13.5px;
  color: var(--on-black-muted);
}
@media (max-width: 820px) {
  .site-footer {
    padding: 44px 0 24px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px 20px;
  }
  .footer-brand {
    grid-column: 1/-1;
    flex-direction: row;
    align-items: center;
    gap: 16px;
  }
  .footer-brand img {
    height: 40px;
    align-self: center;
  }
  .footer-brand p {
    font-size: 14px;
  }
  .footer-grid > div:last-child {
    grid-column: 1/-1;
  }
  .footer-grid > div:last-child a {
    display: inline-block;
    margin-right: 20px;
  }
  .footer-base {
    margin-top: 28px;
  }
}