:root {
  --bg: #f5f6f8; --card: #ffffff; --ink: #161a1f; --mut: #5f6b7a; --line: #e2e6eb;
  --acc: #2563eb; --acc2: #1d4ed8; --ok: #15803d; --warn: #b45309; --bad: #b91c1c; --code: #f0f2f5;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0f1216; --card: #171b21; --ink: #e7eaee; --mut: #9aa5b1; --line: #29303a;
          --acc: #6b9bff; --acc2: #8fb3ff; --ok: #4ade80; --warn: #fbbf24; --bad: #f87171; --code: #1f252d; }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--ink); font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--acc); text-decoration: none; }
a:hover { color: var(--acc2); text-decoration: underline; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 16px; }
.top { background: var(--card); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5; }
.bar { display: flex; align-items: center; gap: 18px; min-height: 56px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 18px; color: var(--ink); }
.brand:hover { text-decoration: none; color: var(--ink); }
.logo { color: var(--acc); }
nav { display: flex; gap: 14px; flex: 1; flex-wrap: wrap; }
nav a { color: var(--mut); font-weight: 500; padding: 4px 2px; }
nav a.on { color: var(--ink); border-bottom: 2px solid var(--acc); }
.lang { border: 1px solid var(--line); background: transparent; color: var(--ink); border-radius: 6px; padding: 4px 10px; cursor: pointer; }
main { padding-top: 24px; padding-bottom: 32px; min-height: 60vh; }
h1 { font-size: 26px; margin: 0 0 6px; }
h2 { font-size: 17px; margin: 0 0 12px; }
.lead { color: var(--mut); margin: 0 0 22px; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px; margin-bottom: 18px; }
.tile { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; }
.tile .k { color: var(--mut); font-size: 12px; text-transform: uppercase; letter-spacing: .04em; }
.tile .v { font-size: 21px; font-weight: 650; margin-top: 4px; font-variant-numeric: tabular-nums; }
.tile .n { color: var(--mut); font-size: 12px; margin-top: 2px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 16px; margin-bottom: 16px; }
.coins { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 14px; }
.coin { display: block; color: var(--ink); }
.coin:hover { text-decoration: none; border-color: var(--acc); }
.coin .head { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; margin-bottom: 10px; }
.coin .sym { font-weight: 700; font-size: 18px; }
.coin .algo { color: var(--mut); font-size: 13px; }
.kv { display: grid; grid-template-columns: 1fr auto; gap: 4px 12px; font-size: 14px; font-variant-numeric: tabular-nums; }
.kv span:nth-child(odd) { color: var(--mut); }
table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
th, td { text-align: left; padding: 8px; border-bottom: 1px solid var(--line); font-size: 14px; vertical-align: top; }
th { color: var(--mut); font-weight: 500; font-size: 12px; text-transform: uppercase; letter-spacing: .03em; }
td.r, th.r { text-align: right; }
.scroll { overflow-x: auto; }
.mono { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 13px; word-break: break-all; }
.empty { color: var(--mut); padding: 10px 0; }
.tag { display: inline-block; padding: 1px 9px; border-radius: 99px; font-size: 12px; border: 1px solid var(--line); white-space: nowrap; }
.tag.ok { color: var(--ok); border-color: var(--ok); } .tag.warn { color: var(--warn); border-color: var(--warn); } .tag.bad { color: var(--bad); border-color: var(--bad); }
pre.cmd { background: var(--code); border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; overflow-x: auto; margin: 6px 0 12px; }
pre.cmd code { font-family: ui-monospace, Consolas, monospace; font-size: 13px; }
.form { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.form input, .form select { flex: 1; min-width: 220px; padding: 9px 11px; border: 1px solid var(--line); border-radius: 8px; background: var(--card); color: var(--ink); font: inherit; }
.form button, .btn { padding: 9px 16px; border-radius: 8px; border: 0; background: var(--acc); color: #fff; font: inherit; font-weight: 600; cursor: pointer; }
.form button:hover, .btn:hover { background: var(--acc2); text-decoration: none; color: #fff; }
canvas.chart { width: 100%; height: 190px; display: block; }
.note { color: var(--mut); font-size: 13px; }
.err { color: var(--bad); }
.cols { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 760px) { .cols { grid-template-columns: 1fr; } h1 { font-size: 22px; } }
details { border-top: 1px solid var(--line); padding: 10px 0; }
details summary { cursor: pointer; font-weight: 600; }
.foot { color: var(--mut); font-size: 13px; padding-bottom: 28px; display: flex; gap: 8px; flex-wrap: wrap; }
.sep { opacity: .5; }
.files { list-style: none; margin: 0 0 8px; padding: 0; }
.files li { display: flex; gap: 14px; align-items: flex-start; padding: 12px 0; border-top: 1px solid var(--line); }
.files .dl { flex: none; }
.fmeta { min-width: 0; flex: 1; }
.fname { font-weight: 600; word-break: break-all; }
h3 { font-size: 15px; margin: 14px 0 6px; }
@media (max-width: 640px) {
  .bar { gap: 6px 12px; padding: 8px 16px; }
  .brand { flex: 1; }
  nav { order: 3; flex-basis: 100%; flex-wrap: nowrap; overflow-x: auto; gap: 16px; padding-bottom: 2px; }
  nav a { white-space: nowrap; }
  .files li { flex-direction: column; gap: 8px; }
}

/* home features, steps, coin links */
ul.feats { list-style: none; padding: 0; margin: 4px 0 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 8px 18px; }
ul.feats li { padding-left: 22px; position: relative; }
ul.feats li::before { content: "✓"; position: absolute; left: 0; color: var(--ok); font-weight: 700; }
ol.steps { padding-left: 22px; margin: 4px 0 0; } ol.steps > li { margin-bottom: 10px; }
ul.links { padding-left: 18px; margin: 6px 0 0; } ul.links li { margin-bottom: 4px; overflow-wrap: anywhere; }
.go { margin-top: 10px; font-size: 13px; color: var(--acc, inherit); font-weight: 600; }