:root {
  --bg: #F7F6F2;
  --ink: #121413;
  --ink-2: #4A504D;
  --muted: #5E6862;
  --sage: #66716B;
  --line: #DAD8D1;
  --dark: #17221F;
  --on-dark: #EDEFEC;
  --on-dark-2: #A7B1AC;
  --accent: #2F8FD6;
  --accent-soft: #CFE4F4;
  --dark-hover: #26352F;
  --line-dark: rgba(237, 239, 236, 0.12);
  --white: #FFFFFF;

  --display: "Manrope", system-ui, sans-serif;
  --body: "DM Sans", system-ui, sans-serif;

  --wrap: 1240px;
  --gutter: clamp(20px, 5vw, 64px);
  --section: clamp(88px, 11vw, 152px);
  --radius-pill: 999px;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 17px/1.6 var(--body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh; display: flex; flex-direction: column;
}
main { flex: 1 0 auto; }
img { display: block; max-width: 100%; }
::selection { background: var(--accent-soft); color: var(--ink); }
.invest ::selection { background: #2F5E80; color: var(--white); }
input, select, textarea { caret-color: var(--accent); }
a { color: inherit; text-underline-offset: 3px; text-decoration-thickness: 1px; }
h1, h2, h3 { font-family: var(--display); font-weight: 500; margin: 0; letter-spacing: -0.025em; text-wrap: balance; }
figure { margin: 0; }
p { margin: 0; }

.skip {
  position: absolute; left: var(--gutter); top: -80px; z-index: 100;
  padding: 12px 20px; border-radius: var(--radius-pill);
  background: var(--dark); color: var(--on-dark); font-size: 15px; text-decoration: none;
  transition: top .2s var(--ease-out);
}
.skip:focus { top: 16px; }
main:focus { outline: none; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 14px;
  height: 56px; padding: 0 34px;
  border-radius: var(--radius-pill);
  font: 500 13px/1 var(--body); letter-spacing: 0.24em; text-transform: uppercase;
  text-decoration: none; cursor: pointer;
  border: 1px solid var(--dark);
  transition: background-color .2s, color .2s, border-color .2s, transform .12s var(--ease-out);
}
.btn:active { transform: scale(.98); }
.btn svg { transition: transform .25s var(--ease-out); }
.btn:hover svg { transform: translateX(4px); }
.btn--solid { background: var(--dark); color: var(--on-dark); }
.btn--solid:hover { background: var(--dark-hover); border-color: var(--dark-hover); }
.btn--ghost { background: transparent; color: var(--ink); }
.btn--ghost:hover { background: var(--dark); color: var(--on-dark); }
.btn--sm { height: 46px; padding: 0 28px; font-size: 12px; }
.btn svg { width: 16px; height: 16px; flex: none; }
.btn:focus-visible, a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 3px;
}

/* ---------- Nav ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  transition: background-color .25s, border-color .25s;
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled { background: rgba(247, 246, 242, 0.94); border-bottom-color: var(--line); }
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 88px; }
.nav.is-scrolled .nav__inner { height: 72px; }
.logo {
  font: 500 30px/1 var(--display); letter-spacing: 0.2em; text-decoration: none;
  display: inline-flex; align-items: flex-start;
}
.logo sup { font: 500 9px/1 var(--body); letter-spacing: 0; margin: 1px 0 0 2px; }
.nav__links { display: flex; align-items: center; gap: clamp(24px, 3vw, 44px); list-style: none; margin: 0; padding: 0; }
.nav__links a {
  font: 500 12px/1 var(--body); letter-spacing: 0.22em; text-transform: uppercase; text-decoration: none;
  padding: 8px 0; position: relative;
}
.nav__links a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 2px; height: 1px; background: currentColor;
  transform: scaleX(0); transform-origin: right; transition: transform .3s var(--ease-out);
}
.nav__links a:hover::after { transform: scaleX(1); transform-origin: left; }
.nav__right { display: flex; align-items: center; }
.nav__cta { margin-left: clamp(12px, 2vw, 28px); }
.nav__toggle { display: none; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: clamp(640px, 100vh, 940px);
  display: flex; align-items: center;
  overflow: hidden;
}
.hero__media {
  position: absolute; top: 0; right: 0; height: 100%;
  aspect-ratio: 836 / 1024;
}
.hero__media img {
  width: 100%; height: 100%; object-fit: cover;
  -webkit-mask-image: linear-gradient(to right, transparent 0, #000 18%), linear-gradient(to bottom, #000 82%, transparent 100%);
  -webkit-mask-composite: source-in;
  mask-image: linear-gradient(to right, transparent 0, #000 18%), linear-gradient(to bottom, #000 82%, transparent 100%);
  mask-composite: intersect;
}
.hero__content { position: relative; z-index: 2; padding-top: 88px; padding-bottom: 64px; }
.hero__content > * { max-width: 600px; }
.hero h1 {
  margin-top: 0; color: var(--sage); font-weight: 400;
  font-size: clamp(46px, 6.1vw, 86px);
  line-height: 0.98; letter-spacing: -0.035em;
}
.hero h1 span { display: block; color: var(--ink); font-weight: 500; }
.hero__lede { margin-top: 32px; font-size: clamp(18px, 1.5vw, 21px); line-height: 1.55; color: var(--ink-2); max-width: 460px; letter-spacing: 0.01em; }
.hero__actions { margin-top: 44px; display: flex; flex-wrap: wrap; gap: 14px; }

/* The reaction: the indicator window starts grey, then floods with colour */
.reaction {
  position: absolute; left: 60.4%; top: 31.9%; width: 12%; height: 15%;
  transform: translate(-50%, -50%) rotate(24deg);
  -webkit-mask-image: radial-gradient(closest-side, #000 62%, transparent);
  mask-image: radial-gradient(closest-side, #000 62%, transparent);
  pointer-events: none;
}
.reaction::after {
  content: ""; position: absolute; inset: 0; border-radius: 50%;
  background: radial-gradient(closest-side, rgba(95,180,238,.55), rgba(47,143,214,0) 75%);
  opacity: 0;
}
.js .hero__media .reaction { -webkit-backdrop-filter: grayscale(1) brightness(1.12); backdrop-filter: grayscale(1) brightness(1.12); }
.js .hero__media.is-live .reaction { animation: react 1.1s var(--ease-out) .35s both; }
.js .hero__media.is-live .reaction::after { animation: bloom 1.6s var(--ease-out) .55s both; }
.js .hero__media.is-live .reaction.is-done { animation: none; -webkit-backdrop-filter: none; backdrop-filter: none; }
@keyframes react {
  from { -webkit-backdrop-filter: grayscale(1) brightness(1.12); backdrop-filter: grayscale(1) brightness(1.12); }
  to   { -webkit-backdrop-filter: grayscale(0) brightness(1); backdrop-filter: grayscale(0) brightness(1); }
}
@keyframes bloom {
  0% { opacity: 0; transform: scale(.5); }
  35% { opacity: 1; }
  100% { opacity: 0; transform: scale(1.5); }
}

.hero__media.is-broken .reaction { display: none; }

/* ---------- Sections ---------- */
.section__lede { font-size: clamp(17px, 1.4vw, 19px); color: var(--ink-2); max-width: 600px; }

/* Problem */
.figures {
  margin-top: 0; max-width: 26ch;
  font: 400 clamp(30px, 3.8vw, 54px)/1.14 var(--display); letter-spacing: -0.03em; color: var(--sage);
}
.figures em { font-style: normal; font-weight: 500; color: var(--ink); }
.figures__line { display: block; }
.figures__line + .figures__line { margin-top: .35em; }
.notes { margin-top: clamp(48px, 6vw, 72px); display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(24px, 5vw, 80px); max-width: 980px; color: var(--ink-2); }
.notes p:first-child { color: var(--ink); }
.source { margin-top: 48px; font-size: 13px; color: var(--muted); }

/* Ledger: name on the left, explanation on the right */
.ledger { list-style: none; padding: 0; margin: 40px 0 0; border-bottom: 1px solid var(--line); }
.ledger li { display: grid; grid-template-columns: 56px minmax(180px, 280px) minmax(0, 1fr); gap: 24px; align-items: baseline; padding: 20px 0; border-top: 1px solid var(--line); }
.ledger h2, .ledger h3 { font-size: 19px; letter-spacing: -0.01em; line-height: 1.3; }
.ledger p { color: var(--ink-2); max-width: 60ch; }
.num { font: 500 12px/1 var(--body); letter-spacing: 0.2em; color: var(--muted); }

/* In use */
.use { margin-top: clamp(80px, 10vw, 136px); display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: clamp(40px, 6vw, 96px); align-items: end; }
.use__text { font: 400 clamp(24px, 2.6vw, 34px)/1.3 var(--display); letter-spacing: -0.02em; color: var(--ink); max-width: 30ch; }
.results { list-style: none; padding: 0; margin: 0; display: grid; gap: 20px; }
.results li { display: grid; grid-template-columns: 18px 1fr; gap: 18px; align-items: center; }
.results p { color: var(--ink-2); font-size: 16px; }
.results strong { font-weight: 500; color: var(--ink); }
.swatch { width: 14px; height: 44px; border-radius: 7px; border: 1px solid #C9CFCC; background: linear-gradient(90deg, var(--white), #E9EDEC); }
.swatch--on { border-color: #5BA8E0; background: radial-gradient(ellipse at 50% 50%, #5FB4EE 0%, var(--accent) 70%); clip-path: inset(0 0 0 0 round 7px); transition: clip-path .9s var(--ease-out) .3s; }
.js .results:not(.is-in) .swatch--on { clip-path: inset(100% 0 0 0 round 7px); }

.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.contact__intro { color: var(--muted); font-size: 16px; }

/* Solution */
.diagram { margin-top: 0; }
.diagram svg { width: 100%; height: auto; overflow: visible; }
.diagram .ind-on { transition: opacity .9s var(--ease-out) 1.5s; }
.diagram .chamber { transition: opacity .4s var(--ease-out) 1.1s; }
.js .diagram:not(.is-in) .ind-on { opacity: 0; transition: none; }
.js .diagram:not(.is-in) .chamber { opacity: .3; transition: none; }
.js .diagram.is-in .vapour { animation: vapour .5s linear 3 both; }
@keyframes vapour { from { stroke-dashoffset: -40; } to { stroke-dashoffset: 0; } }
/* Invest — the one dark band */
.invest { background: var(--dark); color: var(--on-dark); padding: clamp(72px, 9vw, 120px) 0; }
.invest .num { color: var(--on-dark-2); }
.invest .section__lede { color: var(--on-dark-2); }
.invest__grid { margin-top: 0; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(40px, 7vw, 112px); }
.invest__h { font-size: 13px; font-family: var(--body); font-weight: 500; letter-spacing: 0.26em; text-transform: uppercase; color: var(--on-dark-2); margin-bottom: 8px; }
.roadmap { list-style: none; margin: 0; padding: 0; }
.roadmap li { display: grid; grid-template-columns: 22px 1fr; gap: 18px; padding: 20px 0; border-bottom: 1px solid var(--line-dark); }
.roadmap .dot { width: 10px; height: 10px; border-radius: 50%; margin-top: 8px; border: 1px solid var(--on-dark-2); }
.roadmap .dot--done { background: var(--on-dark); border-color: var(--on-dark); }
.roadmap .dot--now { background: var(--accent); border-color: var(--accent); }
.roadmap strong { font-weight: 500; display: block; color: var(--on-dark); }
.roadmap span { color: var(--on-dark-2); font-size: 15px; }
.team { list-style: none; margin: 0; padding: 0; }
.team li { display: grid; grid-template-columns: 76px 1fr; gap: 22px; padding: 22px 0; border-bottom: 1px solid var(--line-dark); }
.team img { width: 76px; height: 76px; border-radius: 50%; object-fit: cover; filter: grayscale(1) contrast(1.05); }
.team strong { font: 500 18px/1.3 var(--display); letter-spacing: -0.01em; color: var(--on-dark); }
.team .role { display: block; margin: 4px 0 8px; font-size: 11.5px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--on-dark-2); }
.team p { color: var(--on-dark-2); font-size: 15px; }

/* Register interest */
.register { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(40px, 7vw, 112px); align-items: start; }
.form { display: grid; gap: 14px; }
.field { display: grid; gap: 8px; }
.field label { font: 500 11.5px/1 var(--body); letter-spacing: 0.22em; text-transform: uppercase; color: var(--muted); }
.field input, .field select, .field textarea {
  height: 56px; padding: 0 22px; width: 100%;
  font: 400 16px var(--body); color: var(--ink);
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-pill);
  appearance: none; -webkit-appearance: none;
}
.field select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none' stroke='%23121413' stroke-width='1.4'%3E%3Cpath d='M1 1.5l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 22px center; padding-right: 48px;
}
.field textarea { height: auto; min-height: 140px; padding: 16px 22px; border-radius: 24px; resize: vertical; line-height: 1.5; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--ink); }
.field .optional { text-transform: none; letter-spacing: 0; font-weight: 400; }
.field input[aria-invalid="true"] { border-color: #B3261E; }
.form__note.is-error { color: #B3261E; }
.btn[disabled] { opacity: .6; cursor: progress; }
.form .btn { margin-top: 10px; justify-self: start; }
.form__note { font-size: 14px; color: var(--muted); min-height: 22px; }
.form__note.is-ok { color: var(--ink); animation: note-in .4s var(--ease-out) both; }
@keyframes note-in { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }
.hp { position: absolute; left: -9999px; }


/* ---------- Pages ---------- */
.page-head { padding: calc(88px + clamp(56px, 8vw, 120px)) 0 clamp(56px, 7vw, 96px); }
.page-head h1 { font-size: clamp(40px, 5.4vw, 76px); line-height: 1.02; letter-spacing: -0.035em; max-width: 16ch; }
.page-head .section__lede { margin-top: 28px; }
.page-body { padding-bottom: var(--section); }
.nav__links a[aria-current="page"]::after { transform: scaleX(1); }

.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(40px, 7vw, 112px); align-items: center; }
.split .page-head { padding: 0; }
.split--page { padding-top: calc(88px + clamp(40px, 6vw, 96px)); }
.split__media img { width: 100%; height: auto; border-radius: 4px; }

/* Index of pages on the home page */
.explore { padding: clamp(40px, 6vw, 80px) 0 var(--section); }
.ledger--links { margin-top: 0; }
.ledger--links li { padding: 0; }
.ledger--links a {
  grid-column: 1 / -1; display: grid; grid-template-columns: minmax(200px, 340px) minmax(0, 1fr) 24px; gap: 24px; align-items: baseline;
  padding: 26px 0; text-decoration: none;
}
.ledger--links h2 { font-size: clamp(22px, 2.2vw, 28px); letter-spacing: -0.02em; line-height: 1.2; }
.ledger--links svg { width: 18px; height: 18px; align-self: center; transition: transform .25s var(--ease-out); }
.ledger--links a:hover svg { transform: translateX(4px); }
.ledger--links a:hover h2 { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 6px; }

/* Next page */
.next { display: block; padding: clamp(40px, 5vw, 64px) 0; border-top: 1px solid var(--line); text-decoration: none; }
.next__label { display: block; font-size: 15px; color: var(--muted); }
.next__title { display: inline-flex; align-items: center; gap: 16px; margin-top: 10px; font: 400 clamp(30px, 4vw, 56px)/1.05 var(--display); letter-spacing: -0.03em; }
.next__title svg { width: .6em; height: .6em; transition: transform .3s var(--ease-out); }
.next:hover .next__title svg { transform: translateX(8px); }

/* Contact */
.contact { padding-bottom: var(--section); }
.contact__intro { color: var(--muted); font-size: 16px; }
.contact__mail {
  display: inline-block; margin-top: 20px;
  font: 400 clamp(30px, 5vw, 72px)/1.05 var(--display); letter-spacing: -0.035em;
  text-decoration: none; border-bottom: 1px solid var(--line); padding-bottom: 10px;
  transition: border-color .2s; word-break: break-word;
}
.contact__mail:hover { border-bottom-color: var(--ink); }

/* Investor enquiry */
.enquire { padding: var(--section) 0; }
.enquire h2 { font-size: clamp(34px, 4.2vw, 58px); line-height: 1.04; }
.enquire .section__lede { margin-top: 24px; }
.enquire .form__row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.enquire__aside { margin-top: 28px; color: var(--muted); font-size: 15px; }
.enquire__aside a { color: var(--ink-2); }

/* 404 and thank-you */
.page-head .actions { margin-top: 36px; display: flex; flex-wrap: wrap; gap: 14px; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding: 40px 0 48px; }
.site-footer__inner { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 16px 32px; font-size: 13.5px; color: var(--muted); }
.site-footer .logo { font-size: 20px; color: var(--ink); }
.site-footer a { color: var(--ink-2); }

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .nav__toggle {
    display: inline-flex; align-items: center; justify-content: center;
    width: 46px; height: 46px; margin-left: 10px;
    border: 1px solid var(--dark); border-radius: 50%; background: transparent; cursor: pointer;
  }
  .nav__toggle span, .nav__toggle span::before { display: block; width: 16px; height: 1px; background: var(--ink); position: relative; transition: transform .2s; }
  .nav__toggle span::before { content: ""; position: absolute; top: 5px; }
  .nav__toggle span { transform: translateY(-2.5px); }
  .nav.is-open { background: var(--bg); border-bottom-color: var(--line); }
  .nav__links {
    display: flex; flex-direction: column; align-items: flex-start; gap: 4px;
    position: absolute; top: 100%; left: 0; right: 0;
    padding: 12px var(--gutter) 28px; background: var(--bg); border-bottom: 1px solid var(--line);
    visibility: hidden; clip-path: inset(0 0 100% 0);
    transition: clip-path .22s var(--ease-out), visibility 0s linear .22s;
  }
  .nav__links li { opacity: 0; transform: translateY(-6px); transition: opacity .15s, transform .15s; }
  .nav.is-open .nav__links {
    visibility: visible; clip-path: inset(0 0 0 0);
    transition: clip-path .4s var(--ease-out);
  }
  .nav.is-open .nav__links li { opacity: 1; transform: none; transition: opacity .35s var(--ease-out), transform .35s var(--ease-out); }
  .nav.is-open .nav__links li:nth-child(2) { transition-delay: .03s; }
  .nav.is-open .nav__links li:nth-child(3) { transition-delay: .06s; }
  .nav.is-open .nav__links li:nth-child(4) { transition-delay: .09s; }
  .nav.is-open .nav__links li:nth-child(5) { transition-delay: .12s; }
  .nav.is-open .nav__links a { font-size: 13px; padding: 14px 0; }
  .nav.is-open .nav__toggle span { transform: rotate(45deg); }
  .nav.is-open .nav__toggle span::before { transform: translateY(-5px) rotate(-90deg); }
}

@media (max-width: 900px) {
  .hero { min-height: 0; flex-direction: column; align-items: stretch; }
  .hero__content { order: 1; padding-top: 128px; padding-bottom: 8px; }
  .hero__media { position: relative; order: 2; height: auto; width: min(100%, 560px); margin: 0 0 0 auto; }
  .hero__media img { -webkit-mask-image: linear-gradient(to bottom, transparent 0, #000 14%, #000 86%, transparent 100%); mask-image: linear-gradient(to bottom, transparent 0, #000 14%, #000 86%, transparent 100%); }
  .notes, .use, .invest__grid, .register, .split, .enquire .form__row { grid-template-columns: 1fr; }
  .ledger li { grid-template-columns: 40px minmax(0, 1fr); row-gap: 6px; }
  .ledger li p { grid-column: 2; }
  .ledger--links a { grid-template-columns: minmax(0, 1fr) 24px; row-gap: 6px; }
  .ledger--links a p { grid-row: 2; grid-column: 1; }
  .ledger--links svg { grid-row: 1; grid-column: 2; }
}

@media (max-width: 600px) {
  body { font-size: 16px; }
  .nav__inner { height: 72px; }
  .logo { font-size: 24px; }
  .nav__cta { display: none; }
  .hero__content { padding-top: 112px; }
  .page-head { padding-top: calc(72px + 48px); }
  .split--page { padding-top: calc(72px + 48px); }
  .split .page-head { padding-top: 0; }
  .hero h1 { font-size: clamp(42px, 12.5vw, 56px); }
  .hero__actions .btn { width: 100%; }
  .form .btn { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn:active, .btn:hover svg { transform: none; }
  .js .hero__media.is-live .reaction { animation-duration: .6s; animation-delay: .2s; }
  .js .hero__media.is-live .reaction::after { animation: none; }
  .js .diagram.is-in .vapour { animation: none; }
  .diagram .ind-on, .diagram .chamber { transition-delay: 0s; }
  .swatch--on { transition: none; }
  .nav__links, .nav.is-open .nav__links, .nav__links li, .nav.is-open .nav__links li { transform: none; clip-path: none; transition: opacity .2s, visibility 0s; }
  .form__note.is-ok { animation: fade .2s both; }
}
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }