@font-face {
  font-family: Geist;
  src: url("assets/geist.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}
@font-face {
  font-family: "Instrument Serif";
  src: url("assets/instrument-serif.woff2") format("woff2");
  font-display: swap;
}

:root {
  --bg: #04060a;
  --ink: #f3f5f7;
  --soft: rgba(243, 245, 247, .66);
  --faint: rgba(243, 245, 247, .4);
  --line: rgba(255, 255, 255, .13);
  --blue: #8fc9f3;
  --pad: clamp(20px, 3.4vw, 56px);
  --serif: "Instrument Serif", "Iowan Old Style", Georgia, serif;
  --sans: Geist, "Helvetica Neue", Arial, sans-serif;
  --ease: cubic-bezier(.16, 1, .3, 1);
  --glow: 46, 104, 168;
  --gx: 60%;
  --gy: 42%;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 16px/1.55 var(--sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
h1, h2, h3, p, ul { margin: 0; padding: 0; }
ul { list-style: none; }
a { color: inherit; text-decoration: none; }
img { display: block; }
::selection { background: var(--blue); color: #04121d; }
:focus-visible { outline: 1px solid var(--blue); outline-offset: 5px; border-radius: 2px; }

.skip {
  position: fixed; left: var(--pad); top: -60px; z-index: 50;
  padding: 10px 16px; background: var(--ink); color: var(--bg); border-radius: 999px; font-size: 13px;
}
.skip:focus { top: 14px; }

/* ——— Atmosphere ——— */
#field, .glow, .grain { position: fixed; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.glow {
  z-index: 0;
  background:
    radial-gradient(52vmax 52vmax at var(--gx) var(--gy), rgba(var(--glow), .3), rgba(var(--glow), .07) 46%, transparent 68%),
    radial-gradient(120vmax 70vmax at 50% 118%, rgba(20, 44, 78, .5), transparent 62%);
}
#field { z-index: 1; }
.grain {
  z-index: 3; opacity: .09; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 .9 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
main, .foot { position: relative; z-index: 2; }

/* ——— Navigation ——— */
.nav {
  position: fixed; inset: 0 0 auto; z-index: 20;
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px var(--pad);
  transition: padding .6s var(--ease), background-color .6s, border-color .6s, backdrop-filter .6s;
  border-bottom: 1px solid transparent;
}
.nav.stuck {
  padding-block: 14px;
  background: rgba(4, 6, 10, .55);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  backdrop-filter: blur(18px) saturate(140%);
  border-color: var(--line);
}
.brand { display: grid; justify-items: center; gap: 5px; }
.brand img { width: 128px; height: auto; }
.brand span { font-size: 7.5px; letter-spacing: .42em; text-transform: uppercase; color: var(--soft); padding-left: .42em; }
.nav nav { display: flex; align-items: center; gap: clamp(18px, 2.6vw, 40px); font-size: 13.500px; letter-spacing: -.005em; }
.nav nav a { position: relative; color: var(--soft); transition: color .4s; }
.nav nav a:not(.nav-cta)::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -6px; height: 1px; background: currentColor;
  transform: scaleX(0); transform-origin: right; transition: transform .6s var(--ease);
}
.nav nav a:hover, .nav nav a.on { color: var(--ink); }
.nav nav a:hover::after, .nav nav a.on::after { transform: scaleX(1); transform-origin: left; }
.nav-cta {
  padding: 9px 18px; border: 1px solid rgba(255, 255, 255, .26); border-radius: 999px; color: var(--ink) !important;
  transition: background-color .5s var(--ease), color .5s var(--ease), border-color .5s !important;
}
.nav-cta:hover { background: var(--ink); color: var(--bg) !important; border-color: var(--ink); }

/* ——— Chapter rail ——— */
.rail {
  position: fixed; right: var(--pad); top: 50%; z-index: 15; transform: translateY(-50%);
  display: grid; gap: 2px; justify-items: end;
}
.rail a { position: relative; display: flex; align-items: center; justify-content: flex-end; height: 22px; width: 44px; }
.rail a::after {
  content: ""; width: 12px; height: 1px; background: var(--faint);
  transition: width .7s var(--ease), background-color .5s;
}
.rail a.on::after, .rail a:hover::after { width: 34px; background: var(--ink); }
.rail span {
  position: absolute; right: 48px; white-space: nowrap;
  font-size: 10px; letter-spacing: .26em; text-transform: uppercase; color: var(--soft);
  opacity: 0; transform: translateX(8px); transition: opacity .5s, transform .6s var(--ease);
}
.rail a:hover span, .rail a:focus-visible span { opacity: 1; transform: none; }

/* ——— Type ——— */
h1, h2, h3 { font-family: var(--serif); font-weight: 400; }
h1 { font-size: clamp(4.25rem, 11.6vw, 12.500rem); line-height: .86; letter-spacing: -.032em; }
h2 { font-size: clamp(3rem, 7vw, 7.500rem); line-height: .9; letter-spacing: -.028em; }
h3 { font-size: clamp(1.75rem, 2.3vw, 2.25rem); line-height: 1.05; letter-spacing: -.012em; }
.label {
  display: flex; align-items: center; gap: 14px; margin-bottom: clamp(22px, 2.6vw, 36px);
  font-size: 10.500px; letter-spacing: .34em; text-transform: uppercase; color: var(--soft);
}
.label::before { content: ""; width: 34px; height: 1px; background: var(--blue); }
.lede { max-width: 34ch; font-size: clamp(1rem, 1.25vw, 1.1875rem); line-height: 1.5; letter-spacing: -.012em; color: var(--soft); }

/* ——— Chapters ——— */
.ch { position: relative; display: flex; min-height: 118svh; padding: 0 var(--pad); }
.ch > div { width: 100%; }

.hero { min-height: 100svh; align-items: flex-end; padding-bottom: clamp(28px, 4.4vh, 52px); }
.hero-grid { display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; }
.hero-aside { flex: none; width: min(100%, 300px); padding-bottom: clamp(6px, 1.4vw, 20px); margin-right: clamp(0px, 5vw, 76px); }
.hero-aside p { font-size: clamp(1rem, 1.2vw, 1.125rem); line-height: 1.5; letter-spacing: -.012em; color: var(--soft); }
.poster { display: none; position: absolute; right: 2vw; top: 12vh; width: min(58vw, 760px); opacity: .9; }
.no-gl .poster { display: block; }
.no-gl #field { display: none; }

.cta { display: inline-flex; align-items: center; gap: 16px; margin-top: 26px; font-size: 14px; letter-spacing: -.005em; }
.cta i, .mail i {
  display: grid; place-items: center; flex: none; width: 46px; height: 46px; border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, .28); overflow: hidden;
  transition: background-color .6s var(--ease), border-color .6s, color .6s;
}
.cta svg, .mail svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 1.2; transition: transform .7s var(--ease); }
.cta:hover i, .mail:hover i { background: var(--ink); border-color: var(--ink); color: var(--bg); }
.cta:hover svg { transform: translateY(3px); }
.mail:hover svg { transform: translate(2px, -2px); }

.tech { align-items: flex-start; padding-top: clamp(160px, 28vh, 280px); }
.split { display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; }
.split .lede { margin: 0 clamp(0px, 7vw, 110px) clamp(6px, 1vw, 16px) 0; }

.company, .heritage { align-items: flex-end; padding-bottom: clamp(56px, 11vh, 120px); }
.stack h2 + .lede { margin-top: clamp(24px, 2.6vw, 38px); }
.trio { display: flex; gap: clamp(22px, 3vw, 46px); margin-top: clamp(30px, 3.4vw, 50px); font-size: 10.500px; letter-spacing: .34em; text-transform: uppercase; color: var(--soft); }
.trio li { display: flex; align-items: center; gap: clamp(22px, 3vw, 46px); }
.trio li + li::before { content: ""; width: 4px; height: 4px; border-radius: 50%; background: var(--blue); }

.nations { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(20px, 3vw, 48px); margin: clamp(40px, 5.6vw, 84px) calc(clamp(0px, 7vw, 110px)) 0 0; }
.nations li { padding-top: 22px; border-top: 1px solid var(--line); }
.nation { display: flex; align-items: center; gap: 12px; margin-bottom: clamp(22px, 2.6vw, 36px); font-size: 10.500px; letter-spacing: .34em; text-transform: uppercase; color: var(--soft); }
.nation img { height: 13px; width: auto; border-radius: 1.5px; box-shadow: 0 0 0 1px rgba(255, 255, 255, .14); }
.nations h3 + p { margin-top: 12px; max-width: 30ch; font-size: 15px; color: var(--soft); }

.contact { min-height: 112svh; align-items: flex-end; padding-bottom: clamp(60px, 11vh, 128px); text-align: center; }
.centre { display: grid; justify-items: center; }
.centre .label::after { content: ""; width: 34px; height: 1px; background: var(--blue); }
.centre .lede { margin-top: clamp(24px, 2.6vw, 38px); max-width: 38ch; }
.mail { display: inline-flex; align-items: center; gap: 20px; margin-top: clamp(30px, 3.6vw, 52px); }
.mail span {
  font-family: var(--serif); font-size: clamp(1.75rem, 3.3vw, 3.25rem); line-height: 1.2; letter-spacing: -.015em;
  background: linear-gradient(currentColor, currentColor) 0 100% / 100% 1px no-repeat;
  transition: background-size .8s var(--ease);
}
.mail:hover span { background-size: 0 1px; background-position: 100% 100%; }

/* ——— Footer ——— */
.foot { padding: 0 var(--pad) clamp(18px, 2.4vw, 34px); }
.foot-row {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 32px;
  padding: 22px 0 clamp(36px, 6vw, 88px); border-top: 1px solid var(--line);
  font-size: 12.500px; color: var(--faint);
}
.foot-row div { display: flex; gap: 28px; }
.foot-row a { color: var(--soft); transition: color .4s; }
.foot-row a:hover { color: var(--ink); }
.foot-mark {
  width: 100%; height: auto; opacity: .9;
  -webkit-mask-image: linear-gradient(#000 10%, rgba(0, 0, 0, .12) 96%);
  mask-image: linear-gradient(#000 10%, rgba(0, 0, 0, .12) 96%);
}

/* ——— Reveals ——— */
.lines .l { display: block; overflow: hidden; padding: .06em .04em .16em; margin: -.06em -.04em -.16em; }
.lines .l > span { display: block; }
.js .lines .l > span { transform: translateY(112%); transition: transform 1.500s var(--ease); transition-delay: calc(var(--i) * .11s + .05s); }
.js .lines.in .l > span { transform: none; }
.js .fade { opacity: 0; transform: translateY(20px); transition: opacity 1.200s ease, transform 1.500s var(--ease); transition-delay: var(--d, 0s); }
.js .fade.in { opacity: 1; transform: none; }
.js .nav, .js .rail { opacity: 0; transition: opacity 1.600s ease .9s, padding .6s var(--ease), background-color .6s, border-color .6s; }
.js.ready .nav, .js.ready .rail { opacity: 1; }

/* ——— Small screens ——— */
@media (max-width: 1000px) {
  .rail { display: none; }
}
@media (max-width: 800px) {
  .nav nav a:not(.nav-cta) { display: none; }
  .brand img { width: 112px; }
  .hero-grid, .split { flex-direction: column; align-items: flex-start; gap: 26px; }
  .hero-aside, .split .lede { margin-right: 0; }
  .ch { min-height: 108svh; }
  .hero { min-height: 100svh; }
  .tech { align-items: flex-end; padding: 0 var(--pad) 46vh; }
  .company, .heritage, .contact { padding-top: 52vh; }
  .nations { grid-template-columns: 1fr; margin-right: 0; gap: 28px; }
  .nation { margin-bottom: 14px; }
  .trio { letter-spacing: .26em; gap: 16px; }
  .trio li { gap: 16px; }
  .mail { gap: 14px; }
  .mail i { width: 40px; height: 40px; }
  .foot-row { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .lines .l > span, .js .fade { transform: none; transition: opacity .4s ease; }
  .js .lines .l > span { opacity: 1; }
}