:root {
  --ink: #0b0f1c;
  --panel: #121a2e;
  --chip: #1a2440;
  --line: #24304f;
  --text: #dfe5f2;
  --mid: #a7b2cc;
  --dim: #6c7896;
  --faint: #3d4866;
  --white: #f6f8fd;
  --red: #e8483a;
  --blue: #4fd8e8;
  --yellow: #fcd34d;
  --green: #6cc04a;
  --accent: var(--yellow);
  --display: "Inter Tight", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --body: "Inter", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Menlo, monospace;
  --r-lg: 2.8rem;
  --r-md: 1.6rem;
  --gutter: clamp(1.6rem, 4vw, 4.8rem);
}

* { box-sizing: border-box; }
html { font-size: 62.5%; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--ink);
  color: var(--text);
  font: 400 1.6rem/1.55 var(--body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
::selection { background: var(--yellow); color: var(--ink); }
.mono { font-family: var(--mono); font-size: .92em; letter-spacing: -.01em; }

/* ---------- header ---------- */
.top {
  position: fixed; inset: 0 0 auto 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.6rem var(--gutter) 2.4rem;
  pointer-events: none;
  background: linear-gradient(rgba(11,15,28,.92) 55%, rgba(11,15,28,0));
}
.top > * { pointer-events: auto; }
.brand { display: flex; align-items: center; gap: 1rem; font: 620 2rem/1 var(--display); letter-spacing: -.02em; color: var(--white); }
.brand-mark { width: 2.4rem; height: 2.4rem; display: block; }
.top nav { display: flex; gap: .6rem; }
.chip {
  display: inline-flex; align-items: center; gap: .8rem;
  min-height: 4.2rem; padding: 0 1.8rem;
  border-radius: 99rem;
  background: rgba(26, 36, 64, .82);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  color: var(--text); font: 500 1.4rem/1 var(--body);
  transition: background .2s, color .2s;
}
.chip:hover, .chip[aria-current="page"] { background: var(--white); color: var(--ink); }
.chip.solid { background: var(--green); color: var(--ink); }
.chip.solid:hover { background: #86d363; }

/* ---------- hero ---------- */
.hero {
  position: relative; min-height: 100svh;
  display: grid; align-items: center;
  padding: 12rem var(--gutter) 8rem;
  overflow: hidden;
}
#field { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.hero-copy { position: relative; z-index: 2; max-width: 84rem; }
.hero h1 {
  margin: 0 0 2.8rem;
  font: 620 clamp(4rem, 5.8vw, 9.6rem)/.92 var(--display);
  letter-spacing: -.035em; color: var(--white);
}
.hero h1 .grey { display: block; background: linear-gradient(90deg, var(--green), var(--blue) 45%, var(--yellow) 80%, var(--red)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lede { max-width: 46rem; margin: 0 0 3.6rem; font-size: clamp(1.6rem, 1.5vw, 1.9rem); color: var(--mid); }
.actions { display: flex; flex-wrap: wrap; gap: 1rem; }
.btn {
  display: inline-flex; align-items: center; gap: 1rem;
  height: 5.4rem; padding: 0 2.6rem; border-radius: 99rem;
  font: 560 1.6rem/1 var(--body); border: 1px solid var(--line);
  background: transparent; color: var(--text); cursor: pointer;
  transition: background .2s, color .2s, border-color .2s;
}
.btn:hover { border-color: var(--mid); color: var(--white); }
.btn.primary { background: var(--green); color: var(--ink); border-color: var(--green); }
.btn.primary:hover { background: #86d363; border-color: #86d363; color: var(--ink); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn .arr { font-family: var(--body); }
.hero-foot {
  position: absolute; z-index: 2; left: var(--gutter); right: var(--gutter); bottom: 2.8rem;
  display: flex; justify-content: space-between; gap: 2rem; color: var(--dim); font-size: 1.3rem;
}

/* ---------- body layout: explorer rail + content ---------- */
.doc {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: 22rem minmax(0, 1fr);
  gap: clamp(2.4rem, 5vw, 8rem);
  padding: 4rem var(--gutter) 12rem;
  border-top: 1px solid var(--line);
  background: var(--ink);
}
.explorer { position: sticky; top: 9.6rem; align-self: start; font-size: 1.4rem; color: var(--dim); }
.explorer .root { color: var(--mid); margin-bottom: .8rem; display: flex; align-items: center; gap: .8rem; }
.explorer ol { list-style: none; margin: 0; padding: 0 0 0 1.1rem; border-left: 1px solid var(--line); }
.explorer li a {
  display: flex; align-items: center; gap: .8rem;
  padding: .55rem 0 .55rem 1.4rem; margin-left: -1.2rem;
  border-left: 1px solid transparent; transition: color .2s, border-color .2s;
}
.explorer li a::before { content: ""; width: .7rem; height: .7rem; border-radius: .2rem; background: var(--faint); transition: background .2s; }
.explorer li a:hover { color: var(--text); }
.explorer li a::before { background: var(--c, var(--faint)); opacity: .45; }
.explorer li a.on { color: var(--white); border-left-color: var(--c, var(--white)); }
.explorer li a.on::before { opacity: 1; }
.explorer li:nth-child(1) a { --c: var(--yellow); }
.explorer li:nth-child(2) a { --c: var(--blue); }
.explorer li:nth-child(3) a { --c: var(--green); }
.explorer li:nth-child(4) a { --c: var(--red); }
.explorer li:nth-child(5) a { --c: var(--white); }

.sec { padding: 4rem 0 9.6rem; scroll-margin-top: 8rem; }
.sec + .sec { border-top: 1px solid var(--line); }
.sec h2 {
  margin: 0 0 2rem; max-width: 18ch;
  font: 620 clamp(3.2rem, 4.4vw, 5.8rem)/.96 var(--display);
  letter-spacing: -.03em; color: var(--white);
}
.sec p { max-width: 60rem; margin: 0 0 1.6rem; color: var(--mid); }
.sec p strong { color: var(--text); font-weight: 560; }
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: clamp(2.4rem, 4vw, 6rem); align-items: start; }

/* file tree card */
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--r-lg); }
.tree { padding: 2.4rem 2.8rem; font-size: 1.5rem; }
.tree-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.6rem; color: var(--dim); font-size: 1.3rem; }
.tree ul { list-style: none; margin: 0; padding: 0; }
.tree ul ul { padding-left: 2rem; border-left: 1px solid var(--line); margin-left: .7rem; }
.tree li { padding: .45rem 0; }
.tree .row { display: flex; justify-content: space-between; gap: 1.6rem; align-items: baseline; }
.tree .name { color: var(--text); }
.tree .note { color: var(--dim); font-size: 1.3rem; text-align: right; }
.tree .dir > .row .name::after { content: "/"; color: var(--dim); }
.call {
  margin-top: 2rem; padding: 1.6rem 1.8rem; border-radius: var(--r-md);
  background: var(--ink); border: 1px dashed var(--line);
  font-family: var(--mono); font-size: 1.25rem; color: var(--mid); overflow-wrap: anywhere;
}
.call b { color: var(--blue); font-weight: 600; }

/* calculator */
.calc { padding: 2.8rem; display: grid; gap: 2.4rem; }
.field label { display: flex; justify-content: space-between; font-size: 1.4rem; color: var(--mid); margin-bottom: 1rem; }
.field output, .field .val { color: var(--white); font-family: var(--mono); font-size: 1.4rem; }
input[type="range"] { width: 100%; accent-color: var(--green); }
.calc-out { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); border-radius: var(--r-md); overflow: hidden; }
.calc-out div { background: var(--ink); padding: 1.8rem 2rem; }
.calc-out span { display: block; font-size: 1.3rem; color: var(--dim); margin-bottom: .6rem; }
.calc-out b { font: 600 clamp(2.6rem, 3vw, 3.4rem)/1 var(--display); letter-spacing: -.02em; color: var(--green); }
.fine { font-size: 1.3rem; color: var(--dim); margin: 0; }

/* rules */
.rules { list-style: none; margin: 3.2rem 0 0; padding: 0; counter-reset: r; max-width: 76rem; }
.rules li {
  counter-increment: r; display: grid; grid-template-columns: 5.6rem 1fr; gap: 1.6rem;
  padding: 2.2rem 0; border-top: 1px solid var(--line);
}
.rules li::before { content: counter(r, decimal-leading-zero); font-family: var(--mono); font-size: 1.3rem; color: var(--c); padding-top: .4rem; }
.rules li:nth-child(4n+1) { --c: var(--yellow); }
.rules li:nth-child(4n+2) { --c: var(--blue); }
.rules li:nth-child(4n+3) { --c: var(--green); }
.rules li:nth-child(4n+4) { --c: var(--red); }
.rules b { display: block; color: var(--white); font-weight: 560; font-size: 1.8rem; margin-bottom: .4rem; }
.rules span { color: var(--mid); }

/* agents */
.agents-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(28rem, 1fr)); gap: 1.6rem; margin-top: 3.2rem; }
.agent { padding: 2.4rem; display: grid; gap: 1.4rem; }
.agent-top { display: flex; justify-content: space-between; align-items: center; }
.agent h3 { margin: 0; font: 620 2.4rem/1 var(--display); letter-spacing: -.02em; color: var(--white); }
.pill { display: inline-flex; align-items: center; gap: .6rem; padding: .5rem 1.2rem; border-radius: 99rem; background: var(--chip); font-size: 1.25rem; color: var(--mid); }
.pill i { width: .6rem; height: .6rem; border-radius: 50%; background: var(--dim); }
.pill.live i { background: var(--green); box-shadow: 0 0 0 0 rgba(108,192,74,.6); animation: ping 2s infinite; }
@keyframes ping { 70% { box-shadow: 0 0 0 .8rem rgba(108,192,74,0); } 100% { box-shadow: 0 0 0 0 rgba(108,192,74,0); } }
.kv { display: grid; grid-template-columns: auto 1fr; gap: .6rem 1.6rem; font-size: 1.4rem; }
.kv dt { color: var(--dim); }
.kv dd { margin: 0; text-align: right; color: var(--text); overflow-wrap: anywhere; }
.empty {
  margin-top: 3.2rem; padding: 4.8rem 2.8rem; text-align: center;
  border: 1px dashed var(--line); border-radius: var(--r-lg); color: var(--dim);
}
.empty b { display: block; font: 620 2.6rem/1.1 var(--display); color: var(--text); letter-spacing: -.02em; margin-bottom: 1rem; }
.empty .btn { margin-top: 2.4rem; }

/* footer */
.foot {
  position: relative; z-index: 2; background: var(--ink);
  border-top: 1px solid var(--line);
  padding: 4.8rem var(--gutter) 6rem;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(20rem, 1fr)); gap: 3.2rem;
  font-size: 1.4rem; color: var(--dim);
}
.foot h4 { margin: 0 0 1.2rem; font-weight: 500; color: var(--mid); font-size: 1.4rem; }
.foot p { margin: 0 0 .6rem; }
.foot a:hover { color: var(--text); }

/* ---------- launch page ---------- */
.page { position: relative; padding: 12rem var(--gutter) 10rem; }
.page-head { max-width: 72rem; margin-bottom: 4.8rem; }
.page-head h1 { margin: 0 0 1.6rem; font: 620 clamp(4rem, 6vw, 7.2rem)/.94 var(--display); letter-spacing: -.035em; color: var(--white); }
.page-head p { margin: 0; color: var(--mid); max-width: 56rem; }
.launch { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: 2.4rem; align-items: start; }
.form { padding: 2.8rem; display: grid; gap: 2.4rem; }
.form .two { display: grid; grid-template-columns: 1fr 1fr; gap: 1.6rem; }
.form label { display: block; font-size: 1.4rem; color: var(--mid); margin-bottom: .8rem; }
.form .help { display: block; font-size: 1.3rem; color: var(--dim); margin-top: .8rem; }
.form input[type="text"], .form textarea, .form select {
  width: 100%; background: var(--ink); color: var(--white);
  border: 1px solid var(--line); border-radius: 1.2rem;
  padding: 1.4rem 1.6rem; font: 400 1.6rem/1.4 var(--body);
  outline: none; transition: border-color .2s;
}
.form textarea { min-height: 28rem; resize: vertical; font: 400 1.45rem/1.6 var(--mono); }
.form input:focus, .form textarea:focus, .form select:focus { border-color: var(--mid); }
.genres { display: flex; flex-wrap: wrap; gap: .6rem; }
.genres button {
  height: 3.8rem; padding: 0 1.6rem; border-radius: 99rem; cursor: pointer;
  background: var(--chip); border: 1px solid transparent; color: var(--mid); font: 500 1.4rem/1 var(--body);
}
.genres button[aria-pressed="true"] { background: var(--blue); color: var(--ink); }
.summary { position: sticky; top: 9.6rem; padding: 2.8rem; display: grid; gap: 2rem; }
.summary h2 { margin: 0; font: 620 2.4rem/1 var(--display); letter-spacing: -.02em; color: var(--white); }
.hash { font-family: var(--mono); font-size: 1.25rem; color: var(--text); overflow-wrap: anywhere; }
.status { padding: 1.6rem 1.8rem; border-radius: var(--r-md); background: var(--ink); border: 1px solid var(--line); font-size: 1.4rem; color: var(--mid); }
.status b { color: var(--text); font-weight: 560; }
.counter { font-size: 1.3rem; color: var(--dim); text-align: right; margin-top: .6rem; }

/* reveal */
.rv { opacity: 0; transform: translateY(1.6rem); transition: opacity .8s ease, transform .8s ease; }
.rv.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .rv { opacity: 1; transform: none; transition: none; } }

/* ---------- responsive ---------- */
@media (max-width: 960px) {
  .doc { grid-template-columns: 1fr; }
  .explorer { display: none; }
  .split, .launch { grid-template-columns: 1fr; }
  .summary { position: static; }
}
@media (max-width: 600px) {
  .top nav .hide-sm { display: none; }
  .hero { align-items: end; padding-bottom: 10rem; }
  .hero-foot { flex-direction: column; gap: .4rem; }
  .form .two { grid-template-columns: 1fr; }
  .tree { padding: 2rem; }
  .tree .note { display: none; }
  .calc-out { grid-template-columns: 1fr; }
  .rules li { grid-template-columns: 1fr; gap: .6rem; }
}

/* section colour: a brick swatch before each heading */
.sec { --c: var(--white); }
#prompt { --c: var(--yellow); }
#build { --c: var(--blue); }
#fuel { --c: var(--green); }
#rules { --c: var(--red); }
.sec h2::before {
  content: ""; display: block; width: 1.8rem; height: 1.8rem; margin-bottom: 2rem;
  border-radius: .2rem; box-shadow: inset 0 -.5rem 0 rgba(0,0,0,.28); background: var(--c);
}
.sec .card { border-color: color-mix(in srgb, var(--c) 22%, var(--line)); }

.wallets { display: grid; gap: .8rem; }
.wallets .btn { justify-content: flex-start; }
.wallets img { border-radius: .4rem; }

/* agent page */
h2.sub { margin: 6.4rem 0 1.6rem; font: 620 clamp(2.6rem, 3vw, 3.4rem)/1 var(--display); letter-spacing: -.02em; color: var(--white); }
.rules.builds { margin-top: 0; max-width: none; }
.rules.builds .fine { display: block; margin-top: .6rem; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--r-md); }
.ledger { width: 100%; border-collapse: collapse; font-size: 1.4rem; }
.ledger th, .ledger td { text-align: left; padding: 1.2rem 1.6rem; border-bottom: 1px solid var(--line); white-space: nowrap; }
.ledger th { color: var(--dim); font-weight: 500; }
.ledger td:nth-child(2) { white-space: normal; color: var(--mid); }
.ledger a { color: var(--blue); }
.kv dd a { color: var(--blue); }
.prompt-text { margin: 0; white-space: pre-wrap; color: var(--text); font-size: 1.35rem; line-height: 1.65; }

.copy { margin-left: .8rem; padding: .3rem .9rem; border-radius: 99rem; border: 1px solid var(--line); background: var(--chip); color: var(--text); font: 500 1.2rem/1.4 var(--body); cursor: pointer; }
.copy:hover { border-color: var(--green); color: var(--white); }
.join { margin: 1.6rem 0 0; }

/* $SPAWN contract address */
.ca { display: flex; align-items: center; gap: .8rem; flex-wrap: wrap; margin-top: 2.4rem; padding: .7rem .7rem .7rem 1.4rem; max-width: 100%; width: fit-content;
  border: 1px solid var(--line); border-radius: 99rem; background: rgba(18, 26, 46, .78); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); }
.ca-tag { font: 620 1.4rem/1 var(--display); color: var(--green); }
.ca-addr { font: 400 1.35rem/1.4 var(--mono); color: var(--text); overflow-wrap: anywhere; }
.ca-btn { padding: .55rem 1.3rem; border-radius: 99rem; border: 1px solid var(--line); background: var(--chip); color: var(--text); font: 500 1.3rem/1.2 var(--body); cursor: pointer; white-space: nowrap; }
.ca-btn:hover { border-color: var(--green); color: var(--white); }
.ca-foot code { font-family: var(--mono); font-size: 1.2rem; overflow-wrap: anywhere; color: var(--mid); }
@media (max-width: 600px) { .ca { border-radius: 1.6rem; } }
.ca-addr, .ca-foot code { user-select: all; -webkit-user-select: all; }