:root {
  color-scheme: dark;
  --ink: #e7e0d5;
  --muted: #9d968d;
  --dim: #69645f;
  --bg: #030404;
  --surface: #0b0d0d;
  --surface-2: #101315;
  --line: rgba(149, 141, 132, 0.2);
  --logo-top: #958d84;
  --logo-bottom: #4e5b66;
  --logo-top-light: #d8d0c3;
  --logo-bottom-light: #7d8d9c;
  --mint: var(--logo-top-light);
  --blue: var(--logo-bottom);
  --warm: var(--logo-top);
  --max: 1160px;
  --font-body:
    "Avenir Next", Avenir, "Helvetica Neue", Helvetica, Arial, ui-sans-serif,
    system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-display:
    "Bank Gothic", "BankGothic Md BT", "BankGothic Lt BT", "Bank Gothic Medium",
    "Bank Gothic Light", "Copperplate Gothic Light", Copperplate, var(--font-body);
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.55;
  letter-spacing: 0;
  background:
    radial-gradient(circle at 50% 0%, rgba(149, 141, 132, 0.075), transparent 33rem),
    radial-gradient(circle at 82% 12%, rgba(78, 91, 102, 0.11), transparent 28rem),
    linear-gradient(180deg, #050606 0%, #020303 100%);
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

.inline-link {
  color: var(--logo-top-light);
  text-decoration: underline;
  text-decoration-color: rgba(216, 208, 195, 0.42);
  text-underline-offset: 0.2em;
}

.inline-link:hover {
  color: var(--ink);
  text-decoration-color: currentColor;
}

img {
  display: block;
  max-width: 100%;
}

.signal-field {
  position: fixed;
  inset: 0;
  z-index: -1;
  width: 100%;
  height: 100%;
  opacity: 0.12;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: 16px 0 10px;
  backdrop-filter: blur(20px);
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: 180px;
}

.brand-paper {
  display: inline-flex;
  align-items: center;
  width: 164px;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  filter: drop-shadow(0 10px 24px rgba(0, 0, 0, 0.42));
}

.brand-paper img {
  width: 100%;
  height: auto;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 4px;
  border: 1px solid rgba(149, 141, 132, 0.18);
  border-radius: 2px;
  background: rgba(3, 4, 4, 0.62);
}

.site-nav a {
  min-height: 32px;
  padding: 7px 12px;
  border-radius: 1px;
  color: var(--muted);
  font-family: var(--font-display);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  white-space: nowrap;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--ink);
  background: rgba(149, 141, 132, 0.12);
}

.section {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: 92px 0;
  border-bottom: 1px solid var(--line);
}

.home-main {
  min-height: calc(100vh - 162px);
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: 42px 0 22px;
}

.home-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  grid-template-rows: repeat(4, minmax(128px, 1fr));
  min-height: calc(100vh - 230px);
  border: 1px solid rgba(149, 141, 132, 0.18);
  background: rgba(149, 141, 132, 0.045);
}

.home-visual,
.home-link {
  position: relative;
  overflow: hidden;
  background: rgba(2, 3, 3, 0.94);
}

.home-visual {
  grid-row: 1 / 5;
  min-height: 560px;
  padding: clamp(30px, 5vw, 58px);
}

.home-visual::before {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(149, 141, 132, 0.035), transparent 46%),
    radial-gradient(circle at 52% 34%, rgba(78, 91, 102, 0.13), transparent 18rem),
    linear-gradient(135deg, rgba(2, 3, 3, 0.1), rgba(149, 141, 132, 0.04));
  content: "";
}

.home-visual::after {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, transparent, rgba(0, 0, 0, 0.36)),
    linear-gradient(0deg, rgba(0, 0, 0, 0.72), transparent 35%, rgba(0, 0, 0, 0.28));
  content: "";
}

.triangle-field {
  position: absolute;
  inset: 0;
  z-index: 1;
  opacity: 0.62;
}

.triangle-node,
.triangle-line {
  pointer-events: none;
}

.triangle-node {
  fill: rgba(78, 91, 102, 0.16);
  stroke: rgba(149, 141, 132, 0.34);
  stroke-width: 0.26;
  filter: drop-shadow(0 0 6px rgba(78, 91, 102, 0.1));
}

.triangle-line {
  stroke: rgba(149, 141, 132, 0.3);
  stroke-width: 0.2;
  vector-effect: non-scaling-stroke;
  animation: triangleLinePulse 8s ease-in-out infinite;
}

.visual-mark {
  position: absolute;
  top: 42px;
  right: 48px;
  display: grid;
  gap: 11px;
  width: 124px;
}

.visual-mark span {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(149, 141, 132, 0.48));
}

.visual-mark span:nth-child(2) {
  width: 70%;
  margin-left: auto;
}

.visual-mark span:nth-child(3) {
  width: 38%;
  margin-left: auto;
  background: rgba(78, 91, 102, 0.82);
}

.visual-copy {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  max-width: 720px;
  height: 100%;
}

.visual-copy p {
  margin-bottom: 20px;
  color: var(--mint);
  font-family: var(--font-display);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.42em;
  text-transform: uppercase;
}

.visual-copy h1 {
  max-width: 680px;
  margin-bottom: 0;
  font-size: clamp(3rem, 6.1vw, 5.8rem);
  line-height: 0.96;
  letter-spacing: 0;
}

.home-link {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 128px;
  padding: 24px 28px;
  border-left: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition:
    background 180ms ease,
    border-color 180ms ease,
    transform 180ms ease;
}

.home-link:last-child {
  border-bottom: 0;
}

.home-link::before {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(78, 91, 102, 0.09), transparent 52%);
  opacity: 0;
  transition: opacity 180ms ease;
  content: "";
}

.home-link h2,
.home-link p {
  position: relative;
  z-index: 1;
}

.home-link h2 {
  max-width: 330px;
  margin-bottom: 10px;
  font-size: clamp(1.06rem, 1.55vw, 1.32rem);
  line-height: 1.05;
}

.home-link p {
  max-width: 330px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.45;
}

.home-link:hover {
  border-color: rgba(78, 91, 102, 0.42);
  background: rgba(9, 12, 13, 0.96);
  transform: translateX(-2px);
}

.home-link:hover::before {
  opacity: 1;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(340px, 0.95fr);
  align-items: center;
  min-height: calc(100vh - 90px);
  gap: 48px;
  padding-top: 44px;
}

.hero-copy,
.page-hero {
  max-width: 820px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--logo-bottom-light);
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  letter-spacing: 0.025em;
}

h1 {
  max-width: 920px;
  margin-bottom: 24px;
  font-size: clamp(3rem, 6.8vw, 6.1rem);
  line-height: 0.98;
  font-weight: 620;
  overflow-wrap: break-word;
}

.page-hero h1 {
  font-size: clamp(2.65rem, 5.4vw, 5rem);
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1.03;
  font-weight: 620;
}

h3 {
  margin-bottom: 10px;
  color: var(--logo-bottom-light);
  font-size: 1.08rem;
  line-height: 1.25;
}

.lede {
  max-width: 760px;
  color: var(--muted);
  font-size: clamp(1.12rem, 2vw, 1.42rem);
}

.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-weight: 700;
}

.button.primary {
  color: #04100d;
  border-color: transparent;
  background: linear-gradient(135deg, var(--logo-top-light), #a49a8e);
}

.button.secondary {
  color: var(--ink);
  background: rgba(149, 141, 132, 0.08);
}

.hero-instrument {
  position: relative;
  aspect-ratio: 1;
  min-height: 360px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(78, 91, 102, 0.36), rgba(149, 141, 132, 0.08)),
    rgba(149, 141, 132, 0.025);
  overflow: hidden;
}

.hero-instrument::before,
.hero-instrument::after {
  position: absolute;
  content: "";
  inset: 14%;
  border: 1px solid rgba(149, 141, 132, 0.24);
  border-radius: 50%;
}

.hero-instrument::after {
  inset: 27%;
  border-color: rgba(78, 91, 102, 0.3);
}

.orbit {
  position: absolute;
  border: 1px solid rgba(149, 141, 132, 0.22);
  border-radius: 50%;
  transform-origin: center;
}

.orbit-one {
  inset: 19%;
  animation: turn 24s linear infinite;
}

.orbit-two {
  inset: 8%;
  animation: turn 38s linear infinite reverse;
}

.orbit::before {
  position: absolute;
  top: 15%;
  left: 10%;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--logo-bottom-light);
  box-shadow: 0 0 24px rgba(78, 91, 102, 0.55);
  content: "";
}

.core {
  position: absolute;
  inset: 50% auto auto 50%;
  display: grid;
  place-items: center;
  width: 42%;
  aspect-ratio: 1;
  padding: 22px;
  border: 1px solid rgba(149, 141, 132, 0.24);
  border-radius: 50%;
  color: var(--ink);
  text-align: center;
  background: rgba(5, 7, 8, 0.78);
  transform: translate(-50%, -50%);
}

.core strong {
  font-size: clamp(1.2rem, 3vw, 2rem);
}

.core span {
  color: var(--muted);
  font-size: 0.76rem;
  text-transform: uppercase;
}

.node {
  position: absolute;
  display: grid;
  place-items: center;
  width: 84px;
  height: 38px;
  border: 1px solid rgba(149, 141, 132, 0.2);
  border-radius: 999px;
  color: var(--ink);
  font-size: 0.78rem;
  font-weight: 700;
  background: rgba(10, 13, 15, 0.82);
}

.node-a {
  top: 18%;
  left: 19%;
}

.node-b {
  top: 24%;
  right: 13%;
}

.node-c {
  bottom: 18%;
  left: 12%;
}

.node-d {
  right: 17%;
  bottom: 15%;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 58px;
}

.split p,
.text-grid p,
.rails p,
.process p,
.architecture p,
.spec-list p,
.editorial p {
  color: var(--muted);
}

.editorial {
  display: grid;
  gap: 18px;
}

.editorial p {
  max-width: 900px;
  margin-bottom: 0;
  font-size: clamp(1.08rem, 1.8vw, 1.34rem);
}

.editorial blockquote {
  max-width: 900px;
  margin: 14px 0;
  padding: 28px 0 28px 30px;
  border-left: 1px solid var(--mint);
  color: var(--ink);
  font-size: clamp(1.6rem, 3.8vw, 3.2rem);
  font-weight: 620;
  line-height: 1.08;
}

.rails {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  padding: 0;
  background: var(--line);
}

.rails article,
.text-grid article,
.spec-list article {
  min-height: 220px;
  padding: 34px;
  background: rgba(7, 11, 13, 0.86);
}

.rail-number,
.process span,
.architecture-stack span {
  color: var(--warm);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.status-label {
  color: var(--mint);
  font-size: 0.76em;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.statement {
  padding: 110px 0;
}

.statement p {
  max-width: 930px;
  margin-bottom: 0;
  color: var(--ink);
  font-size: clamp(2.05rem, 4.8vw, 4.4rem);
  line-height: 1.03;
}

.text-grid,
.spec-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  padding: 0;
  background: var(--line);
}

.process h2 {
  margin-bottom: 36px;
}

.process-line {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
}

.process-line article {
  min-height: 230px;
  padding: 30px;
  background: rgba(7, 11, 13, 0.88);
}

.architecture {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  gap: 52px;
}

.architecture-stack {
  display: grid;
  gap: 10px;
}

.architecture-stack div {
  display: flex;
  align-items: center;
  gap: 18px;
  min-height: 58px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(149, 141, 132, 0.055);
}

.architecture-breakouts {
  display: grid;
  gap: 14px;
}

.architecture-breakouts article {
  padding: clamp(28px, 4vw, 46px);
  border: 1px solid var(--line);
  border-radius: 2px;
  background:
    linear-gradient(135deg, rgba(78, 91, 102, 0.075), transparent 32%),
    rgba(4, 7, 8, 0.82);
}

.architecture-breakouts h2 {
  max-width: 780px;
  margin-top: 14px;
  margin-bottom: 20px;
}

.architecture-breakouts p {
  max-width: 920px;
  color: var(--muted);
}

.architecture-breakouts p:last-child {
  margin-bottom: 0;
}

.founder-note {
  max-width: 920px;
  color: var(--muted);
}

.founder-note p:not(.eyebrow) {
  max-width: 760px;
  font-size: clamp(1.05rem, 1.5vw, 1.24rem);
}

.founder-note blockquote {
  max-width: 820px;
  margin: 34px 0;
  padding: 26px 0 26px 30px;
  border-left: 1px solid var(--logo-bottom-light);
  color: var(--ink);
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 3.4vw, 3rem);
  line-height: 1.08;
}

.founder-note .signature {
  margin-top: 34px;
  color: var(--ink);
}

.donate-hero {
  padding-bottom: 72px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: 34px 0 54px;
  color: var(--dim);
  font-size: 0.9rem;
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  width: 132px;
  flex: 0 0 auto;
  opacity: 0.88;
}

.footer-logo:hover {
  opacity: 1;
}

.footer-logo img {
  width: 100%;
  height: auto;
}

.site-footer > span:first-of-type {
  text-align: center;
}

.site-footer a {
  color: var(--logo-top-light);
}

@keyframes turn {
  to {
    transform: rotate(360deg);
  }
}

@keyframes triangleLinePulse {
  0%,
  100% {
    opacity: 0.5;
  }

  50% {
    opacity: 0.86;
  }
}

@media (max-width: 900px) {
  .site-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
    gap: 16px;
  }

  .site-nav {
    width: 100%;
    overflow-x: auto;
    border-radius: 2px;
  }

  .hero,
  .split,
  .architecture {
    grid-template-columns: 1fr;
  }

  .home-main {
    padding-top: 26px;
  }

  .home-grid {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
    min-height: 0;
  }

  .home-visual {
    grid-row: auto;
    min-height: 460px;
  }

  .home-link {
    min-height: 170px;
    border-left: 0;
  }

  .hero {
    min-height: auto;
    padding-top: 54px;
  }

  .hero-instrument {
    min-height: 300px;
  }

  .rails,
  .text-grid,
  .spec-list,
  .process-line {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .section,
  .site-header,
  .site-footer {
    width: min(100% - 28px, var(--max));
  }

  .brand-paper {
    width: 150px;
  }

  .brand-paper img {
    width: 100%;
  }

  .site-nav a {
    padding-inline: 10px;
    font-size: 0.62rem;
    letter-spacing: 0.12em;
  }

  h1 {
    font-size: clamp(2.25rem, 11.8vw, 3.35rem);
    line-height: 1.04;
  }

  .page-hero h1 {
    font-size: clamp(2.15rem, 10.5vw, 3.1rem);
  }

  .section {
    padding: 68px 0;
  }

  .home-main {
    width: min(100% - 28px, var(--max));
    min-height: auto;
  }

  .home-visual {
    min-height: 430px;
    padding: 26px;
  }

  .triangle-field {
    opacity: 0.54;
    transform: scale(0.86);
    transform-origin: 52% 48%;
  }

  .visual-mark {
    top: 26px;
    right: 26px;
    width: 86px;
  }

  .visual-copy h1 {
    font-size: clamp(2.35rem, 12.5vw, 3.45rem);
    line-height: 1;
  }

  .home-link {
    min-height: 158px;
    padding: 24px;
  }

  .rails article,
  .text-grid article,
  .spec-list article,
  .process-line article {
    min-height: auto;
    padding: 26px;
  }

  .site-footer {
    flex-direction: column;
  }
}