/* Brand palette from the KWARS identity. Contrast: black on white 21:1, dark grey on white 8.9:1,
   dark grey on light grey 7.0:1, light grey on black 16.9:1 */
:root {
  color-scheme: light;
  --black: #000000;
  --white: #ffffff;
  --light: #e5e5e5;
  --dark: #4a4a4a;
  --serif: "Cormorant Garamond", "Cormorant", Garamond, "Times New Roman", serif;
  --sans: "Jost", "Futura", "Avenir Next", "Helvetica Neue", Arial, sans-serif;
  --gutter: clamp(16px, 4vw, 48px);
  --nav-h: 60px;
}

* { box-sizing: border-box; }
html { background: var(--white); scroll-behavior: smooth; }
/* A slim scrollbar in the brand colours: dark on white, light over the intro */
html { scrollbar-width: thin; scrollbar-color: rgba(0, 0, 0, .38) var(--white); }
html.scroll-dark { scrollbar-color: rgba(255, 255, 255, .38) var(--black); background: var(--black); }
::-webkit-scrollbar { width: 11px; height: 11px; }
::-webkit-scrollbar-track { background: var(--white); }
::-webkit-scrollbar-thumb { background: rgba(0, 0, 0, .34); border: 3px solid var(--white); border-radius: 11px; }
::-webkit-scrollbar-thumb:hover { background: rgba(0, 0, 0, .6); }
html.scroll-dark ::-webkit-scrollbar-track { background: var(--black); }
html.scroll-dark ::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, .34); border-color: var(--black); }
html.scroll-dark ::-webkit-scrollbar-thumb:hover { background: rgba(255, 255, 255, .6); }
body {
  margin: 0;
  background: var(--white);
  color: var(--black);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
main { overflow-x: clip; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--black); outline-offset: 3px; border-radius: 6px; }
.dark :focus-visible { outline-color: var(--white); }
section[id] { scroll-margin-top: calc(var(--nav-h) + 12px); }

.wrap { max-width: 1200px; margin-inline: auto; padding-inline: var(--gutter); }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
h1, h2, h3 { margin: 0; font-weight: 600; text-wrap: balance; }

.label {
  margin: 0;
  font-family: var(--sans); font-size: 12px; font-weight: 500;
  letter-spacing: .24em; text-transform: uppercase;
  color: var(--dark);
}
.dark .label { color: var(--light); }
h2 {
  font-family: var(--serif); font-weight: 600;
  font-size: clamp(42px, 6.4vw, 88px);
  line-height: .98; letter-spacing: -.01em;
}
.sub { margin: 0; color: var(--dark); font-size: clamp(18px, 1.9vw, 20px); max-width: 30em; }
.dark .sub { color: var(--light); }

/* Logo */
.mark { display: block; flex: none; }
.logo { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; min-height: 44px; }
.logo .mark { width: 34px; height: 22px; }
.kword { display: block; flex: none; aspect-ratio: 607 / 104; }
.logo .kword { height: 15px; width: auto; }

/* Nav */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  padding-top: env(safe-area-inset-top, 0px);
  background: rgba(255, 255, 255, .84);
  backdrop-filter: saturate(160%) blur(20px);
  -webkit-backdrop-filter: saturate(160%) blur(20px);
  border-bottom: 1px solid var(--light);
}
.nav-in { height: var(--nav-h); display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.nav-links { display: flex; align-items: center; gap: clamp(14px, 3vw, 36px); }
.nav-links a:not(.btn) { color: var(--dark); font-size: 13px; letter-spacing: .16em; text-transform: uppercase; text-decoration: none; padding-block: 12px; }
.nav-links a:not(.btn):hover { color: var(--black); }
.nav-links .lang { font-weight: 500; color: var(--black); border: 1px solid var(--light); border-radius: 980px; padding: 8px 12px; min-width: 44px; text-align: center; }
.nav.on-dark .nav-links .lang { color: var(--white); border-color: rgba(255, 255, 255, .3); }

/* One action, the same everywhere */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 50px;
  background: var(--black); color: var(--white); border: 0;
  font: 500 16px/1 var(--sans); letter-spacing: .04em;
  padding: 0 30px; border-radius: 980px;
  text-decoration: none; cursor: pointer; white-space: nowrap;
  transition: background .2s, color .2s, transform .2s;
}
.btn:hover { background: var(--dark); }
.btn:active { transform: scale(.97); }
.btn.sm { min-height: 36px; font-size: 14px; padding: 0 18px; }
.dark .btn { background: var(--white); color: var(--black); }
.dark .btn:hover { background: var(--light); }
.more { color: var(--black); text-decoration: none; font-size: 16px; letter-spacing: .04em; padding-block: 12px; }
.more:hover { text-decoration: underline; text-underline-offset: 5px; }

/* Hero: mark, wordmark, rule, formula, like the official lockup, then the promise */
/* Intro: forecasting chaos. The Lorenz system, an ensemble of forecasts, corrected with data, ending in the mark */
.intro { display: none; position: relative; height: 540vh; }
.js .intro { display: block; }
.stage { position: sticky; top: 0; height: 100vh; height: 100svh; overflow: hidden; background: var(--black); color: var(--white); }
.stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.hud {
  position: absolute; display: grid; gap: 7px; align-content: start;
  font: 500 11px/1.35 var(--sans); letter-spacing: .2em; text-transform: uppercase;
  color: rgba(255, 255, 255, .62); font-variant-numeric: tabular-nums;
}
.hud b { color: var(--white); font-weight: 500; letter-spacing: .08em; }
.hud-tl { left: var(--gutter); top: calc(var(--nav-h) + env(safe-area-inset-top, 0px) + 22px); }
.hud-tr { right: var(--gutter); top: calc(var(--nav-h) + env(safe-area-inset-top, 0px) + 22px); justify-items: end; text-align: right; }
.hud-bl { left: var(--gutter); bottom: clamp(24px, 5vh, 48px); min-width: 250px; }
.hud-bl div { display: flex; justify-content: space-between; gap: 24px; border-top: 1px solid rgba(255, 255, 255, .14); padding-top: 7px; }
.hud-br { right: var(--gutter); bottom: clamp(24px, 5vh, 48px); justify-items: end; text-align: right; text-transform: none; letter-spacing: .02em; }
.eq { font: italic 500 clamp(20px, 1.9vw, 26px)/1.2 var(--serif); color: var(--white); letter-spacing: .01em; }
.eq small { display: block; font: 500 11px/1.4 var(--sans); font-style: normal; letter-spacing: .2em; text-transform: uppercase; color: rgba(255, 255, 255, .62); margin-top: 4px; }
.skip { color: rgba(255, 255, 255, .75); text-decoration: none; padding: 8px 0; }
.skip:hover { color: var(--white); text-decoration: underline; text-underline-offset: 4px; }
.caption {
  position: absolute; left: var(--gutter); right: var(--gutter); bottom: clamp(150px, 17vh, 190px);
  margin: 0; text-align: center; pointer-events: none;
  font-family: var(--serif); font-weight: 500; font-size: clamp(34px, 4.4vw, 60px); line-height: 1.05; color: var(--white);
  transition: opacity .4s;
}
.caption small { display: block; margin-top: 14px; font: 500 12px/1.3 var(--sans); letter-spacing: .22em; text-transform: uppercase; color: rgba(255, 255, 255, .7); }
.scroll-hint {
  position: absolute; left: 50%; bottom: clamp(22px, 4.5vh, 44px); transform: translateX(-50%);
  display: grid; justify-items: center; gap: 12px;
  color: var(--white); pointer-events: none; transition: opacity .5s;
}
.scroll-hint span { font: 500 12px/1 var(--sans); letter-spacing: .28em; text-transform: uppercase; margin-right: -.28em; white-space: nowrap; animation: breathe 2.8s ease-in-out infinite; }
.scroll-hint i { position: relative; width: 1px; height: 36px; background: linear-gradient(rgba(255, 255, 255, 0), rgba(255, 255, 255, .7)); }
.scroll-hint i::after { content: ""; position: absolute; left: -2px; top: 0; width: 5px; height: 5px; border-radius: 50%; background: var(--white); animation: drop 2.8s ease-in-out infinite; }
@keyframes breathe { 0%, 100% { opacity: .3; } 50% { opacity: 1; } }
@keyframes drop { 0% { transform: translateY(-4px); opacity: 0; } 25% { opacity: 1; } 100% { transform: translateY(34px); opacity: 0; } }
.nav { transition: background .3s, border-color .3s; }
.nav.on-dark { background: rgba(0, 0, 0, .55); border-bottom-color: rgba(255, 255, 255, .1); }
.nav.on-dark .logo, .nav.on-dark .nav-links a:not(.btn) { color: var(--white); }
.nav.on-dark .btn { background: var(--white); color: var(--black); }

.hero { --lw: clamp(260px, 40vw, 560px); padding-top: calc(var(--nav-h) + env(safe-area-inset-top, 0px) + clamp(48px, 8vw, 110px)); padding-bottom: clamp(96px, 13vw, 170px); text-align: center; }
.js .hero { padding-top: 0; }
.js .hero-mark { display: none; }
.hero-mark { display: block; width: calc(var(--lw) * .425); aspect-ratio: 260 / 168; height: auto; margin: 0 auto calc(var(--lw) * .096); }
.lockup { display: grid; justify-items: center; }
.lockup .kword { width: var(--lw); height: auto; }
.rule { width: calc(var(--lw) * .376); height: max(2px, calc(var(--lw) * .0085)); background: var(--black); border: 0; margin: calc(var(--lw) * .082) auto calc(var(--lw) * .1); }
.kslogan { display: block; width: calc(var(--lw) * .7); aspect-ratio: 425 / 71; height: auto; }
h1 {
  margin-top: clamp(40px, 5vw, 60px);
  font-family: var(--serif); font-weight: 500;
  font-size: clamp(26px, 3.4vw, 42px);
  line-height: 1.2; letter-spacing: .02em;
}
.ctas { display: flex; flex-wrap: wrap; gap: 8px 30px; justify-content: center; align-items: center; margin-top: clamp(32px, 4vw, 44px); }

/* Product */
.markets { padding-bottom: clamp(100px, 13vw, 170px); }
.head { display: grid; gap: 16px; margin-bottom: clamp(40px, 5vw, 64px); }
.card { border-radius: 32px; overflow: hidden; display: flex; flex-direction: column; min-height: 100%; }
.cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.card.dark { background: var(--black); color: var(--white); }
.card.light { background: var(--light); color: var(--black); }
.card.line { background: var(--white); color: var(--black); border: 1px solid var(--light); }
.card.light p, .card.line p { color: var(--dark); }
.art { position: relative; aspect-ratio: 16 / 10; max-width: 100%; }
.art canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.card-body { padding: 8px clamp(24px, 3vw, 36px) clamp(28px, 3vw, 40px); display: grid; gap: 10px; }
.card h3 { font-family: var(--serif); font-weight: 600; font-size: clamp(34px, 3.2vw, 46px); line-height: 1; }
.card p { margin: 0; max-width: 30ch; }
.card.dark p { color: var(--light); }

/* Why */
.why { border-top: 1px solid var(--light); padding-block: clamp(100px, 13vw, 170px); }
.why-copy { display: grid; gap: 18px; justify-items: center; text-align: center; }
.why-copy .sub { max-width: 34em; }

/* Questions and answers: closed by default, readable by people, search engines and AI alike */
.faq { padding-block: clamp(96px, 12vw, 160px); }
.faq-grid { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: clamp(32px, 6vw, 96px); align-items: start; }
.faq-head { display: grid; gap: 16px; justify-items: start; position: sticky; top: calc(var(--nav-h) + 32px); }
.faq-list { border-top: 1px solid var(--light); }
.faq details { border-bottom: 1px solid var(--light); }
.faq summary {
  list-style: none; cursor: pointer;
  display: flex; justify-content: space-between; align-items: center; gap: 24px;
  min-height: 44px; padding: 22px 0;
  font: 500 clamp(17px, 1.7vw, 20px)/1.35 var(--sans); color: var(--black);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: ""; flex: none; width: 14px; height: 14px;
  background: linear-gradient(currentColor, currentColor) center / 14px 1.5px no-repeat, linear-gradient(currentColor, currentColor) center / 1.5px 14px no-repeat;
  transition: transform .25s ease;
}
.faq summary:hover { color: var(--dark); }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { margin: 0 0 24px; max-width: 60ch; color: var(--dark); }

/* Contact: a full part of the page, not an afterthought */
.contact { background: var(--black); color: var(--white); padding-block: clamp(100px, 13vw, 170px); }
.contact-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: clamp(40px, 6vw, 96px); align-items: start; }
.contact-copy { display: grid; gap: 20px; align-content: start; }
.contact h2 { font-size: clamp(48px, 7vw, 96px); }
.contact .sub { max-width: 26em; }
.contact-form {
  display: grid; gap: 16px;
  background: #0d0d0d; border: 1px solid #262626; border-radius: 28px;
  padding: clamp(22px, 3vw, 36px);
}
.contact-form label, .contact-form legend { display: grid; gap: 8px; font-size: 13px; letter-spacing: .14em; text-transform: uppercase; color: var(--light); }
.contact-form fieldset { border: 0; margin: 0; padding: 0; display: grid; gap: 10px; min-width: 0; }
.contact-form legend { padding: 0; margin-bottom: 10px; }
.pair { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.contact-form input, .contact-form textarea {
  width: 100%; min-width: 0; min-height: 50px;
  background: var(--black); color: var(--white);
  border: 1px solid var(--dark); border-radius: 14px;
  font: 400 17px/1.4 var(--sans); letter-spacing: 0; text-transform: none; padding: 12px 16px;
}
.contact-form textarea { min-height: 110px; resize: vertical; }
.contact-form input::placeholder, .contact-form textarea::placeholder { color: #8f8f8f; }
.contact-form input:focus, .contact-form textarea:focus { outline: none; border-color: var(--white); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { position: relative; }
.chip input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.chip span {
  display: inline-flex; align-items: center; min-height: 44px; padding: 0 18px;
  border: 1px solid var(--dark); border-radius: 980px;
  font-size: 15px; letter-spacing: .02em; text-transform: none; color: var(--light); cursor: pointer;
  transition: background .2s, color .2s, border-color .2s;
}
.chip span:hover { border-color: var(--light); }
.chip input:checked + span { background: var(--white); color: var(--black); border-color: var(--white); }
.chip input:focus-visible + span { outline: 2px solid var(--white); outline-offset: 3px; }
.contact-form .btn { width: 100%; margin-top: 4px; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.note { margin: 0; font-size: 14px; color: var(--light); min-height: 1.5em; }
.ask { justify-self: start; margin-top: 8px; font-size: 15px; letter-spacing: .02em; text-decoration: none; padding-block: 8px; border-bottom: 1px solid currentColor; }
.ask:hover { opacity: .7; }
.why .btn { margin-top: 12px; }

/* Footer */
footer { background: var(--black); color: var(--light); border-top: 1px solid #262626; }
.foot { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px 28px; padding-block: 22px calc(22px + env(safe-area-inset-bottom, 0px)); font-size: 13px; letter-spacing: .04em; }
.foot .logo { color: var(--white); }
.foot .logo .mark { width: 31px; height: 20px; }
.foot .logo .kword { height: 13px; }
.foot-slogan { width: 110px; color: var(--white); }
.foot-meta { display: flex; flex-wrap: wrap; gap: 6px 20px; }

@media (max-width: 900px) {
  .cards, .contact-grid, .faq-grid { grid-template-columns: minmax(0, 1fr); }
  .faq-head { position: static; }
  .art { aspect-ratio: 16 / 10; }
}
@media (max-width: 640px) {
  .nav-links a:not(.btn):not(.lang) { display: none; }
  .pair { grid-template-columns: minmax(0, 1fr); }
  .hud-br, .hud .hide-s { display: none; }
  .stage.at-start .hud-bl { visibility: hidden !important; }
  .hud-bl { min-width: 0; right: var(--gutter); }
}
@media (pointer: coarse) {
  .btn.sm { min-height: 44px; }
}
@media (prefers-reduced-motion: reduce) {
  .faq summary::after { transition: none; }
  .scroll-hint span, .scroll-hint i::after { animation: none; }
  html { scroll-behavior: auto; }
  .js .intro { display: none; }
  .js .hero { padding-top: calc(var(--nav-h) + env(safe-area-inset-top, 0px) + clamp(48px, 8vw, 110px)); }
  .js .hero-mark { display: block; }
  .btn { transition: none; }
}