/* Chameleon design system.
   One shape family everywhere: sharp rectangles, 1.5px outline, hard offset shadow.
   The accent hue is animated by site.js (--hue) so the whole page changes skin. */
:root {
  --bg: #0c1a14;
  --panel: #12261d;
  --panel2: #173025;
  --ink: #e8efe6;
  --muted: #8fa396;
  --line: rgba(232, 239, 230, 0.14);
  --hue: 165;
  --accent: hsl(var(--hue) 80% 62%);
  --accent-soft: hsl(var(--hue) 70% 62% / 0.16);
  --on-accent: #0c1a14;
  --rail: 232px;
  --serif: 'Instrument Serif', 'Times New Roman', serif;
  --sans: 'Hanken Grotesk', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: 'Martian Mono', ui-monospace, 'Cascadia Mono', Consolas, monospace;
  --shadow: 4px 4px 0 var(--accent);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 400 17px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
  padding-left: var(--rail);
  overflow-x: hidden;
}
img, svg, canvas { max-width: 100%; display: block; }
[hidden] { display: none !important; }
.result { display: none; }
.result.on { display: block; }
.compare .ln { stroke-dasharray: 260; stroke-dashoffset: 260; transition: stroke-dashoffset 1.2s ease 0.2s; }
.reveal.in .ln { stroke-dashoffset: 0; }
.dotg { opacity: 0; transform-box: fill-box; transform-origin: center; }
.reveal.in .dotg { animation: pop 0.55s cubic-bezier(0.2, 1.4, 0.4, 1) forwards; }
@keyframes pop { from { opacity: 0; transform: scale(0.2); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { .compare .ln { transition: none; stroke-dashoffset: 0; } .dotg { opacity: 1; animation: none !important; } }
a { color: inherit; }
::selection { background: var(--accent); color: var(--on-accent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- scale texture (overlapping circles) + cursor spotlight ---------- */
.scales { position: relative; isolation: isolate; }
.scales::before, .scales::after {
  content: ''; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background-image:
    radial-gradient(circle at 50% 100%, transparent 55%, currentColor 56%, currentColor 58%, transparent 59%),
    radial-gradient(circle at 50% 100%, transparent 55%, currentColor 56%, currentColor 58%, transparent 59%);
  background-size: 34px 24px, 34px 24px;
  background-position: 0 0, 17px 12px;
}
.scales::before { color: rgba(232, 239, 230, 0.05); }
.scales::after {
  color: var(--accent); opacity: 0.55;
  -webkit-mask-image: radial-gradient(260px circle at var(--mx, -400px) var(--my, -400px), #000, transparent 70%);
  mask-image: radial-gradient(260px circle at var(--mx, -400px) var(--my, -400px), #000, transparent 70%);
}

/* ---------- left rail ---------- */
.rail {
  position: fixed; inset: 0 auto 0 0; width: var(--rail); z-index: 40;
  display: flex; flex-direction: column; gap: 22px; padding: 22px 20px 18px;
  background: var(--bg); border-right: 1.5px solid var(--line); overflow-y: auto;
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.brand img { width: 38px; height: 38px; border: 1.5px solid var(--ink); }
.brand b { font: 400 29px/1 var(--serif); letter-spacing: -0.01em; }
.rail nav { display: flex; flex-direction: column; gap: 2px; }
.rail nav a, .rail .docnav a {
  font: 500 12px/1.2 var(--mono); letter-spacing: 0.06em; text-transform: uppercase; text-decoration: none;
  color: var(--muted); padding: 9px 10px 9px 12px; border-left: 2px solid transparent;
}
.rail nav a:hover, .rail .docnav a:hover { color: var(--ink); border-left-color: var(--line); }
.rail nav a.on, .rail .docnav a.on { color: var(--accent); border-left-color: var(--accent); background: var(--accent-soft); }
.rail nav a.tk { color: var(--ink); }
.rail .docnav { display: flex; flex-direction: column; gap: 1px; border-top: 1.5px solid var(--line); padding-top: 14px; }
.rail .docnav h5 { margin: 10px 0 4px 12px; font: 500 10px var(--mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); }
.rail .docnav a { text-transform: none; letter-spacing: 0; font: 500 13px/1.3 var(--sans); padding: 6px 10px 6px 12px; }
.rail-foot { margin-top: auto; display: flex; flex-direction: column; gap: 10px; }
.rail-foot .label { white-space: nowrap; font-size: 10px; letter-spacing: 0.1em; line-height: 1.4; }
.chip {
  display: inline-flex; align-items: center; gap: 8px; max-width: 100%; cursor: pointer;
  font: 500 11px/1 var(--mono); letter-spacing: 0.04em; color: var(--ink);
  background: var(--panel); border: 1.5px solid var(--ink); padding: 8px 10px; box-shadow: 3px 3px 0 var(--accent);
  transition: transform 0.12s, box-shadow 0.12s; text-align: left;
}
.chip:hover { transform: translate(2px, 2px); box-shadow: 1px 1px 0 var(--accent); }
.chip b { background: var(--accent); color: var(--on-accent); padding: 2px 5px; font-weight: 500; }
.chip span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.swatch { width: 12px; height: 12px; border: 1.5px solid var(--ink); background: var(--accent); flex: none; }
.menu-btn { display: none; }

/* ---------- type ---------- */
h1, h2, h3, h4 { font-family: var(--serif); font-weight: 400; letter-spacing: -0.02em; margin: 0; line-height: 0.98; }
h1 { font-size: clamp(54px, 8.2vw, 124px); }
h2 { font-size: clamp(40px, 5.2vw, 76px); }
h3 { font-size: clamp(26px, 2.6vw, 36px); line-height: 1.1; }
em { font-style: italic; color: var(--accent); }
.lead { font-size: clamp(18px, 1.7vw, 22px); line-height: 1.5; color: var(--ink); max-width: 60ch; }
.mono { font-family: var(--mono); }
.label { font: 500 11px/1 var(--mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); }
.num { font: 400 17px var(--mono); color: var(--accent); letter-spacing: 0.06em; }
p { margin: 0 0 1em; }
code, .code { font: 400 0.84em var(--mono); background: var(--panel); border: 1px solid var(--line); padding: 1px 5px; }
.muted { color: var(--muted); }

/* ---------- buttons, cards, fields ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  font: 500 13px/1 var(--mono); letter-spacing: 0.08em; text-transform: uppercase; text-decoration: none; cursor: pointer;
  color: var(--ink); background: var(--panel); border: 1.5px solid var(--ink); border-radius: 0;
  padding: 15px 22px; box-shadow: var(--shadow); transition: transform 0.12s, box-shadow 0.12s, background 0.12s;
}
.btn:hover { transform: translate(3px, 3px); box-shadow: 1px 1px 0 var(--accent); }
.btn:active { transform: translate(4px, 4px); box-shadow: 0 0 0 var(--accent); }
.btn.primary { background: var(--accent); color: var(--on-accent); border-color: var(--ink); box-shadow: 4px 4px 0 var(--ink); }
.btn.primary:hover { box-shadow: 1px 1px 0 var(--ink); }
.btn[disabled] { opacity: 0.45; cursor: not-allowed; transform: none; box-shadow: none; }
.btn.small { padding: 10px 14px; font-size: 11px; }
.row { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }

.card { background: var(--panel); border: 1.5px solid var(--ink); box-shadow: var(--shadow); padding: 26px; }
.card.flat { box-shadow: none; border-color: var(--line); }
.field { display: flex; flex-direction: column; gap: 7px; margin-bottom: 16px; }
.field label { font: 500 11px/1 var(--mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }
input, textarea, select {
  font: 400 14px/1.4 var(--mono); color: var(--ink); background: var(--bg); border: 1.5px solid var(--line); border-radius: 0;
  padding: 12px 14px; width: 100%; transition: border-color 0.12s;
}
input:focus, textarea:focus, select:focus { border-color: var(--accent); outline: none; }
textarea { resize: vertical; min-height: 84px; word-break: break-all; }
.kv { display: grid; grid-template-columns: 150px 1fr; gap: 10px 18px; font: 400 13px/1.5 var(--mono); }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; word-break: break-all; }
.callout { border-left: 3px solid var(--accent); background: var(--accent-soft); padding: 14px 18px; margin: 22px 0; font-size: 15px; }
.callout b { display: block; font: 500 11px var(--mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); margin-bottom: 4px; }
.callout.warn { border-left-color: #ff7a59; background: rgba(255, 122, 89, 0.12); }
.callout.warn b { color: #ff9a80; }

/* ---------- page frame ---------- */
main { display: block; }
.wrap { width: min(1120px, 100% - 64px); margin-inline: auto; }
section.chapter { padding: clamp(80px, 11vw, 150px) 0; border-top: 1.5px solid var(--line); }
.chapter-head { display: flex; flex-direction: column; gap: 18px; margin-bottom: 52px; max-width: 880px; }
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- pinned scroll-story hero ---------- */
.story { position: relative; height: 460vh; }
.stage { position: sticky; top: 0; height: 100vh; height: 100svh; overflow: hidden; }
.stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.mascot {
  position: absolute; will-change: transform, filter; pointer-events: none; user-select: none; object-fit: contain;
  filter: hue-rotate(calc((var(--hue) - 165) * 1deg)) saturate(var(--sat, 0.1)) brightness(var(--br, 0.55));
}
.story-steps { position: absolute; inset: 0; pointer-events: none; }
.sstep {
  position: absolute; right: clamp(24px, 5vw, 80px); bottom: clamp(36px, 9vh, 90px); width: min(520px, 46%);
  opacity: 0; transform: translateY(18px); transition: opacity 0.5s, transform 0.5s;
}
.sstep.on { opacity: 1; transform: none; pointer-events: auto; }
.sstep h2 { font-size: clamp(38px, 4.6vw, 68px); margin: 14px 0 16px; }
.sstep p { color: var(--muted); font-size: 18px; max-width: 42ch; }
.sstep.final { width: min(560px, 44%); }
.sstep.final .big { font: 400 clamp(40px, 4.6vw, 76px)/0.98 var(--serif); letter-spacing: -0.02em; margin: 12px 0 18px; }
.sstep.final .row { margin-top: 24px; }
.progress { position: absolute; left: 22px; bottom: 22px; display: flex; gap: 8px; align-items: center; font: 500 11px var(--mono); letter-spacing: 0.12em; color: var(--muted); }
.progress i { width: 26px; height: 3px; background: var(--line); }
.progress i.on { background: var(--accent); }
.scroll-hint { position: absolute; left: 50%; bottom: 20px; transform: translateX(-50%); font: 500 11px var(--mono); letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted); animation: bob 2.4s ease-in-out infinite; }
@keyframes bob { 50% { transform: translate(-50%, 6px); } }

/* ---------- chapters ---------- */
.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.compare .pane { background: var(--panel); border: 1.5px solid var(--line); padding: 22px; }
.compare .pane h4 { font: 500 12px var(--mono); letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 14px; color: var(--muted); }
.compare svg { width: 100%; height: auto; }
.explorer { display: grid; grid-template-columns: 290px 1fr; gap: 0; border: 1.5px solid var(--ink); box-shadow: var(--shadow); background: var(--panel); }
.explorer ol { list-style: none; margin: 0; padding: 0; border-right: 1.5px solid var(--line); }
.explorer li button {
  all: unset; box-sizing: border-box; width: 100%; cursor: pointer; display: flex; gap: 14px; padding: 18px 20px; border-bottom: 1px solid var(--line);
  font: 500 13px/1.35 var(--sans); color: var(--muted);
}
.explorer li button:hover { color: var(--ink); }
.explorer li button.on { color: var(--ink); background: var(--accent-soft); box-shadow: inset 3px 0 0 var(--accent); }
.explorer li button i { font: 500 12px var(--mono); font-style: normal; color: var(--accent); }
.explorer .pane { padding: 28px 30px 24px; min-width: 0; }
.explorer .pane h3 { margin-bottom: 10px; }
.explorer .pane > p { color: var(--muted); font-size: 16px; max-width: 58ch; }
.explorer .vals { margin-top: 18px; display: grid; gap: 12px; }
.val { border: 1px solid var(--line); background: var(--bg); padding: 11px 14px; }
.val small { display: block; font: 500 10px var(--mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); margin-bottom: 5px; }
.val code { background: none; border: 0; padding: 0; font-size: 12.5px; word-break: break-all; display: block; }
.val.ok code::after { content: '  match'; color: var(--accent); font-size: 11px; }
.explorer .ctl { display: flex; gap: 12px; margin-top: 22px; flex-wrap: wrap; }
.addr-swatch { display: inline-flex; align-items: center; gap: 12px; }
.addr-swatch i { width: 28px; height: 28px; border: 1.5px solid var(--ink); }

.limits { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.limits .card h3 { margin-bottom: 14px; }
.limits ul { margin: 0; padding-left: 20px; }
.limits li { margin-bottom: 8px; }
.facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 8px; }
.fact { border: 1.5px solid var(--line); padding: 20px; background: var(--panel); }
.fact b { display: block; font: 400 34px/1 var(--serif); margin-bottom: 8px; }
.fact span { color: var(--muted); font-size: 15px; }

footer.foot { border-top: 1.5px solid var(--line); padding: 42px 0 60px; }
footer.foot .wrap { display: flex; flex-wrap: wrap; gap: 28px 64px; justify-content: space-between; align-items: flex-start; }
footer.foot .col { display: flex; flex-direction: column; gap: 8px; font-size: 15px; }
footer.foot a { color: var(--muted); text-decoration: none; }
footer.foot a:hover { color: var(--accent); }
footer.foot a svg { display: inline; vertical-align: -1px; }
footer.foot small { color: var(--muted); font: 400 11px/1.5 var(--mono); max-width: 52ch; }

/* ---------- try page ---------- */
.try-head { padding: clamp(60px, 8vw, 110px) 0 30px; }
.tabs { display: flex; gap: 0; border-bottom: 1.5px solid var(--line); margin: 38px 0 28px; flex-wrap: wrap; }
.tabs button {
  all: unset; box-sizing: border-box; cursor: pointer; padding: 14px 22px; font: 500 12px var(--mono); letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--muted); border-bottom: 3px solid transparent; margin-bottom: -1.5px;
}
.tabs button:hover { color: var(--ink); }
.tabs button.on { color: var(--accent); border-bottom-color: var(--accent); }
.tabpane { display: none; }
.tabpane.on { display: block; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: start; }
.result { display: none; margin-top: 22px; }
.result.on { display: block; }
.launches { display: grid; gap: 8px; max-height: 260px; overflow-y: auto; margin-bottom: 16px; }
.launches button { all: unset; box-sizing: border-box; cursor: pointer; display: flex; justify-content: space-between; gap: 10px; padding: 10px 12px; border: 1px solid var(--line); font: 400 12px var(--mono); }
.launches button:hover, .launches button.on { border-color: var(--accent); background: var(--accent-soft); }
.status { font: 400 12px/1.5 var(--mono); color: var(--muted); margin-top: 10px; min-height: 18px; }
.found { display: grid; gap: 12px; margin-top: 16px; }
.pill-ok { color: var(--accent); }
.bar { height: 6px; background: var(--line); margin: 8px 0 4px; }
.bar i { display: block; height: 100%; background: var(--accent); width: 0; transition: width 0.3s; }
.diagram { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.diagram .col { border: 1px solid var(--line); background: var(--bg); padding: 14px; font: 400 12px/1.6 var(--mono); }
.diagram .col h5 { margin: 0 0 8px; font: 500 10px var(--mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); }

/* ---------- docs ---------- */
.docs { display: grid; grid-template-columns: minmax(0, 1fr) 210px; gap: 52px; width: min(1080px, 100% - 64px); margin: 0 auto; padding: 70px 0 40px; }
.docs article { min-width: 0; max-width: 760px; }
.docs article h1 { font-size: clamp(44px, 5.6vw, 76px); margin-bottom: 26px; }
.docs article h2 { font-size: 38px; margin: 54px 0 14px; scroll-margin-top: 24px; }
.docs article h3 { font-size: 25px; margin: 34px 0 10px; }
.docs article p, .docs article li { font-size: 17px; }
.docs article ul, .docs article ol { padding-left: 22px; }
.docs article li { margin-bottom: 6px; }
.docs article a { color: var(--accent); text-underline-offset: 3px; }
.docs pre { background: var(--panel); border: 1.5px solid var(--line); border-left: 3px solid var(--accent); padding: 16px 18px; overflow-x: auto; margin: 18px 0; }
.docs pre code { background: none; border: 0; padding: 0; font-size: 13px; line-height: 1.6; }
.docs .toc { position: sticky; top: 30px; align-self: start; display: flex; flex-direction: column; gap: 6px; font-size: 13px; }
.docs .toc h5 { margin: 0 0 6px; font: 500 10px var(--mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); }
.docs .toc a { color: var(--muted); text-decoration: none; padding-left: 10px; border-left: 2px solid var(--line); }
.docs .toc a:hover { color: var(--accent); border-left-color: var(--accent); }
.docs .pn { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 64px; }
.docs .pn a { border: 1.5px solid var(--line); padding: 16px 18px; text-decoration: none; color: var(--ink); font-family: var(--serif); font-size: 22px; line-height: 1.1; }
.docs .pn a:hover { border-color: var(--accent); }
.docs .pn small { display: block; font: 500 10px var(--mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); margin-bottom: 6px; }
.scroll-x { overflow-x: auto; margin: 18px 0; }
table.t { border-collapse: collapse; width: 100%; font-size: 14px; }
table.t th { text-align: left; font: 500 10.5px var(--mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); padding: 10px 14px; border-bottom: 1.5px solid var(--ink); }
table.t td { padding: 11px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }

/* ---------- token page ---------- */
.token-hero { padding: clamp(60px, 8vw, 110px) 0 40px; }
.ca-line { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; margin-top: 28px; }

/* ---------- responsive ---------- */
@media (max-width: 1180px) { .docs { grid-template-columns: minmax(0, 1fr); } .docs .toc { display: none; } }
@media (max-width: 900px) {
  body { padding-left: 0; padding-top: 58px; }
  .rail { inset: 0 0 auto 0; width: 100%; height: 58px; flex-direction: row; align-items: center; padding: 0 16px; gap: 12px; border-right: 0; border-bottom: 1.5px solid var(--line); overflow: visible; }
  .brand img { width: 32px; height: 32px; } .brand b { font-size: 26px; }
  .menu-btn { display: inline-flex; margin-left: auto; font: 500 12px var(--mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink); background: var(--panel); border: 1.5px solid var(--ink); padding: 9px 12px; cursor: pointer; }
  .rail nav, .rail .docnav, .rail-foot { display: none; }
  .rail.open { height: 100svh; flex-direction: column; align-items: stretch; overflow-y: auto; padding: 14px 16px 24px; }
  .rail.open .menu-btn { position: absolute; top: 12px; right: 16px; }
  .rail.open nav, .rail.open .docnav, .rail.open .rail-foot { display: flex; }
  .wrap { width: calc(100% - 32px); }
  .docs { width: calc(100% - 32px); padding-top: 40px; }
  .stage { top: 58px; height: calc(100svh - 58px); }
  .sstep { left: 18px; right: 18px; width: auto; top: 18px; bottom: auto; }
  .sstep.final { top: 18px; bottom: auto; width: auto; }
  .sstep.final .big { font-size: clamp(38px, 11vw, 56px); margin: 8px 0 10px; }
  .sstep.final .row { margin-top: 14px; }
  .sstep p { font-size: 16px; }
  .compare, .limits, .grid2, .diagram, .facts { grid-template-columns: 1fr; }
  .explorer { grid-template-columns: 1fr; }
  .explorer ol { display: flex; overflow-x: auto; border-right: 0; border-bottom: 1.5px solid var(--line); }
  .explorer li { flex: none; } .explorer li button { white-space: nowrap; border-bottom: 0; border-right: 1px solid var(--line); padding: 14px 16px; }
  .kv { grid-template-columns: 1fr; gap: 2px 0; } .kv dd { margin-bottom: 10px; }
  .progress { left: 14px; bottom: 14px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .scroll-hint { animation: none; }
  .btn, .chip { transition: none; }
}