@import url("https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Manrope:wght@400;500;600;700;800&display=swap");
:root {
  --paper: #e5e9df;
  --ink: #252a26;
  --muted: #73796e;
  --accent: #718b4b;
  --line: #c9cdc0;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "DM Sans", Arial, sans-serif;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font: inherit;
}
header {
  height: 60px;
  padding: 0 4.5%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: absolute;
  top: 0;
  width: 100%;
  z-index: 20;
  border-bottom: 1px solid #343c2425;
}
/* The Pulzar logo: the constellation (assets/icon.svg switches its own colours
   with the browser's scheme) beside the lettering cut from the logo art, drawn
   as a mask so it takes the text colour. Sized by font-size. */
.brand {
  font-size: 22px;
  display: flex;
  align-items: center;
  gap: 0.3em;
  line-height: 1;
}
.brand img {
  height: 1.25em;
  width: auto;
}
.wordmark {
  display: inline-block;
  height: 0.8em;
  aspect-ratio: 429 / 96;
  background: currentColor;
  mask: url("assets/wordmark.png") center / contain no-repeat;
}
nav {
  display: flex;
  gap: 34px;
  font-size: 13px;
}
.contact-link {
  font-size: 13px;
}
.contact-link span {
  margin-left: 25px;
}
a:hover {
  color: #718b4b;
}
.hero {
  min-height: 920px;
  height: 100svh;
  max-height: 1200px;
  padding: 101px 4.5% 40px;
  position: relative;
  z-index: 2;
  pointer-events: none;
}
.hero a {
  pointer-events: auto;
}
.hero-top {
  display: flex;
  justify-content: flex-end;
}
.eyebrow,
.edition {
  font:
    10px/1.5 "DM Sans",
    sans-serif;
  letter-spacing: 1.7px;
  font-weight: 600;
}
.eyebrow i,
.scene-hud i {
  width: 6px;
  height: 6px;
  background: #7c9959;
  display: inline-block;
  border-radius: 50%;
  margin-right: 8px;
}
.hero h1 {
  font-family: Manrope, Arial, sans-serif;
  font-size: clamp(65px, 7.7vw, 125px);
  font-weight: 500;
  letter-spacing: -0.075em;
  line-height: 1.04;
  margin: 56px 0 0;
  position: relative;
  z-index: 3;
  max-width: 1000px;
}
em {
  font-style: normal;
  color: var(--muted);
}
.hero-desc {
  font-size: 14px;
  line-height: 1.8;
  position: absolute;
  left: 4.5%;
  bottom: 160px;
  color: #697063;
}
.hero-desc b {
  color: var(--ink);
  font-weight: 500;
  display: block;
  margin-top: 12px;
}
.hero-object-label {
  position: absolute;
  right: 8%;
  bottom: 24%;
  font-size: 9px;
  line-height: 2;
  letter-spacing: 1px;
}
.hero-object-label b {
  font-weight: 400;
  color: #7c8276;
}
.tiny-cross {
  display: block;
  font-size: 26px;
  margin-bottom: 12px;
}
.scroll-cue {
  position: absolute;
  left: 4.5%;
  bottom: 60px;
  font-size: 10px;
  letter-spacing: 1px;
  display: flex;
  gap: 16px;
  align-items: center;
}
.scroll-cue span {
  border: 1px solid #9aab88;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  font-size: 18px;
}
.hero-coordinate {
  position: absolute;
  right: 4.5%;
  bottom: 60px;
  font-size: 9px;
  line-height: 1.8;
  letter-spacing: 1px;
  text-align: right;
}
#scene {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}
#scene canvas {
  width: 100%;
  height: 100%;
  display: block;
}
.scene-fallback {
  position: fixed;
  left: 55%;
  top: 45%;
  font-size: 280px;
  color: #839869;
  z-index: 0;
}
.scene-fallback img {
  width: 280px;
  height: auto;
}
.has-webgl .scene-fallback {
  display: none;
}
.scene-hud {
  position: fixed;
  bottom: 25px;
  left: 4.5%;
  right: 4.5%;
  display: flex;
  justify-content: space-between;
  font-size: 9px;
  letter-spacing: 1.4px;
  z-index: 4;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s;
}
.chapter {
  height: 115vh;
  min-height: 850px;
  position: relative;
  z-index: 2;
  padding: 20vh 5%;
  display: flex;
  align-items: center;
  pointer-events: none;
}
.chapter-copy {
  max-width: 450px;
}
.chapter h2,
.array-section h2,
.platform-strip h2,
.closing h2 {
  font-family: Manrope, Arial, sans-serif;
  font-size: clamp(44px, 4.8vw, 76px);
  font-weight: 500;
  letter-spacing: -0.06em;
  line-height: 1.08;
  margin: 28px 0;
}
.chapter p {
  font-size: 15px;
  line-height: 1.8;
  max-width: 335px;
  color: #72796b;
}
.signal {
  border-top: 1px solid var(--line);
  display: grid;
  gap: 15px;
  margin-top: 40px;
  padding-top: 20px;
  max-width: 330px;
}
.signal span {
  font-size: 9px;
  letter-spacing: 1px;
}
.signal b {
  font-size: 13px;
  font-weight: 500;
}
.array-section {
  position: relative;
  z-index: 5;
  background: #202920;
  color: #e6e8de;
  padding: 110px 5% 90px;
  min-height: 900px;
}
.array-section em {
  color: #9eaf8b;
}
.array-intro {
  color: #aab4a1;
  font-size: 15px;
  max-width: 380px;
  line-height: 1.7;
}
.node-list {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  background: #46503f;
  border: 1px solid #46503f;
  margin-top: 60px;
}
.node-list button {
  cursor: pointer;
  border: 0;
  background: #202920;
  color: #bcc6b3;
  padding: 25px 15px;
  text-align: left;
  min-height: 105px;
  transition: background 0.2s;
}
.node-list button span {
  display: block;
  font-size: 10px;
  margin-bottom: 16px;
  color: #899d75;
}
.node-list button:hover,
.node-list button.active {
  background: #d0e0b6;
  color: #273122;
}
.node-detail {
  padding: 40px 0 0;
  max-width: 730px;
  min-height: 210px;
}
.node-detail > span {
  font-size: 10px;
  letter-spacing: 1px;
  color: #acc68e;
}
.node-detail h3 {
  font-size: 27px;
  letter-spacing: -1px;
  font-weight: 400;
  margin: 18px 0;
}
.node-detail p {
  color: #b8c2af;
  line-height: 1.7;
  font-size: 14px;
}
.node-detail small {
  color: #84917b;
  font-size: 10px;
}
.platform-strip {
  position: relative;
  z-index: 5;
  background: var(--paper);
  padding: 120px 5%;
}
.platform-grid {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 40px;
}
.platform-grid p {
  max-width: 430px;
  color: #73796e;
  line-height: 1.8;
  font-size: 15px;
}
.round-link {
  display: flex;
  align-items: center;
  gap: 60px;
  font-size: 14px;
}
.round-link span {
  border: 1px solid #a8b09e;
  border-radius: 50%;
  padding: 20px;
  font-size: 26px;
}
.protocols {
  border-top: 1px solid var(--line);
  margin-top: 70px;
  padding-top: 30px;
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: #747c6b;
}
.closing {
  position: relative;
  background: #d4dbc9;
  z-index: 5;
  padding: 130px 5%;
  min-height: 750px;
  overflow: hidden;
}
.closing h2 {
  font-size: clamp(65px, 8vw, 125px);
}
.closing p {
  line-height: 1.8;
  color: #68745e;
}
.cta {
  display: inline-flex;
  gap: 45px;
  background: #293725;
  color: white;
  padding: 20px 25px;
  margin-top: 25px;
  font-size: 13px;
}
.cta:hover {
  background: #405638;
  color: white;
}
.closing small {
  display: block;
  margin-top: 15px;
  font-size: 10px;
  color: #6d7865;
}
.open-node {
  position: absolute;
  width: 350px;
  height: 350px;
  right: 9%;
  top: 28%;
  display: grid;
  place-items: center;
}
.open-node span {
  font-size: 80px;
  font-weight: 400;
  color: #6a8258;
}
.open-node i {
  position: absolute;
  inset: 0;
  border: 1px solid #8ca378;
  border-radius: 50%;
  animation: orbit 6s infinite ease-out;
}
.open-node i:nth-child(3) {
  animation-delay: -2s;
}
.open-node i:nth-child(4) {
  animation-delay: -4s;
}
@keyframes orbit {
  0% {
    transform: scale(0.4);
    opacity: 0.9;
  }
  100% {
    transform: scale(1.5);
    opacity: 0;
  }
}
footer {
  position: relative;
  z-index: 5;
  background: #202920;
  color: #d5ddcc;
  padding: 45px 5%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 25px;
}
footer span,
footer > a:not(.brand) {
  font-size: 9px;
  letter-spacing: 1px;
}
.motion-toggle {
  position: fixed;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 30;
  background: #e5e9dfd9;
  border: 1px solid #a4ad98;
  border-radius: 20px;
  font-size: 9px;
  letter-spacing: 0.5px;
  padding: 7px 14px;
  cursor: pointer;
}
.skip {
  position: fixed;
  top: -100px;
  z-index: 100;
  background: white;
  padding: 15px;
}
.skip:focus {
  top: 0;
}
a:focus-visible,
button:focus-visible {
  outline: 2px solid #85a454;
  outline-offset: 5px;
}
.motion-paused * {
  animation-play-state: paused !important;
}
@media (max-width: 760px) {
  header {
    height: 54px;
    padding: 0 6%;
  }
  .brand {
    font-size: 19px;
  }
  nav {
    gap: 18px;
    font-size: 11px;
  }
  nav a:first-child,
  .contact-link {
    display: none;
  }
  .hero {
    padding: 91px 6% 30px;
    height: 880px;
    min-height: 880px;
  }
  .edition {
    display: none;
  }
  .hero h1 {
    font-size: 64px;
    letter-spacing: -5px;
    margin-top: 36px;
  }
  .hero-desc {
    bottom: 120px;
    left: 6%;
    font-size: 12px;
  }
  .hero-object-label {
    right: 6%;
    bottom: 34%;
    font-size: 7px;
  }
  .hero-coordinate {
    display: none;
  }
  .scroll-cue {
    left: 6%;
    bottom: 45px;
  }
  .chapter {
    height: 1050px;
    min-height: 0;
    align-items: flex-start;
    padding: 90px 6%;
  }
  .chapter-copy {
    max-width: 95%;
  }
  .chapter h2 {
    font-size: 49px;
    margin: 25px 0;
  }
  .chapter p {
    font-size: 13px;
    max-width: 310px;
  }
  .signal {
    margin-top: 25px;
    padding-top: 15px;
    gap: 10px;
  }
  .scene-hud {
    font-size: 7px;
    bottom: 45px;
  }
  .array-section,
  .platform-strip {
    padding: 80px 6%;
  }
  .node-list {
    grid-template-columns: repeat(2, 1fr);
    margin-top: 35px;
  }
  .node-list button {
    min-height: 90px;
    padding: 18px;
  }
  .array-section h2,
  .platform-strip h2 {
    font-size: 43px;
  }
  .platform-grid {
    display: block;
  }
  .round-link {
    margin-top: 30px;
    justify-content: space-between;
  }
  .protocols {
    flex-wrap: wrap;
    gap: 25px;
    justify-content: flex-start;
  }
  .closing {
    padding: 80px 6% 310px;
    min-height: 850px;
  }
  .closing h2 {
    font-size: 65px;
  }
  .open-node {
    width: 180px;
    height: 180px;
    top: auto;
    bottom: 55px;
    right: calc(50% - 90px);
  }
  footer {
    flex-wrap: wrap;
    padding: 35px 6% 55px;
  }
  footer span:nth-child(2) {
    display: none;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    animation: none !important;
    transition: none !important;
  }
}