:root {
  --ink: #0a0d10;
  --ink-2: #10151a;
  --panel: #131a20;
  --panel-2: #182129;
  --line: #24303a;
  --line-2: #33424e;
  --paper: #ece6d8;
  --muted: #9aa6ad;
  --dim: #6c7880;
  --hot: #ff5a1f;      /* mayhem orange */
  --hot-2: #ff8a5b;
  --phos: #a3f06a;     /* phosphor green */
  --sky: #5cc8ff;
  --amber: #ffc24a;
  --radius: 14px;
  --display: "Bricolage Grotesque", ui-sans-serif, system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--display);
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
body::before { /* faint grid, like graph paper under a scope */
  content: "";
  position: fixed; inset: 0;
  background-image:
    linear-gradient(var(--ink-2) 1px, transparent 1px),
    linear-gradient(90deg, var(--ink-2) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: .55;
  pointer-events: none;
  z-index: -1;
}

a { color: var(--hot-2); text-underline-offset: 3px; }
a:hover { color: var(--paper); }
code { font-family: var(--mono); font-size: .88em; background: var(--panel-2); padding: .1em .4em; border-radius: 5px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 16px; top: 16px; z-index: 99; background: var(--hot); color: var(--ink); padding: 8px 12px; border-radius: 8px; }
:focus-visible { outline: 2px solid var(--phos); outline-offset: 3px; border-radius: 6px; }

/* ---------- top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 12px clamp(16px, 4vw, 48px);
  background: color-mix(in srgb, var(--ink) 82%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--paper); text-decoration: none; font-weight: 700; letter-spacing: .08em; font-size: 15px; }
.brand svg { width: 26px; height: 26px; color: var(--hot); }
.brand b, .brand-mini b { color: var(--hot); font-weight: 800; }
.topbar nav { display: flex; gap: clamp(10px, 2.4vw, 28px); font-family: var(--mono); font-size: 13px; text-transform: uppercase; letter-spacing: .06em; }
.topbar nav a { color: var(--muted); text-decoration: none; }
.topbar nav a:hover { color: var(--phos); }
.topbar nav a.nav-discord { color: #b9bffc; }
.topbar nav a.nav-discord:hover { color: var(--paper); }
@media (max-width: 640px) {
  .topbar nav a:nth-child(n+2):not(.nav-discord) { display: none; }
  .topbar nav { font-size: 12px; }
}

/* ---------- hero ---------- */
.hero { position: relative; min-height: min(88vh, 780px); display: flex; flex-direction: column; justify-content: flex-end; overflow: hidden; border-bottom: 1px solid var(--line); }
#mesh { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero::after { content: ""; position: absolute; inset: 0; background: radial-gradient(120% 90% at 15% 85%, var(--ink) 25%, transparent 70%); pointer-events: none; }
.hero-inner { position: relative; z-index: 2; padding: 120px clamp(16px, 5vw, 64px) 40px; max-width: 1100px; }
.kicker { display: inline-flex; align-items: center; gap: 10px; font-family: var(--mono); font-size: 13px; color: var(--phos); letter-spacing: .08em; text-transform: uppercase; margin: 0 0 18px; }
.dot { width: 9px; height: 9px; border-radius: 50%; background: var(--phos); box-shadow: 0 0 0 0 var(--phos); animation: ping 2.2s infinite; }
@keyframes ping { 0% { box-shadow: 0 0 0 0 rgba(163,240,106,.6); } 80%,100% { box-shadow: 0 0 0 12px rgba(163,240,106,0); } }
h1 { font-size: clamp(46px, 9vw, 116px); line-height: .92; letter-spacing: -.035em; font-weight: 800; margin: 0 0 22px; }
h1 em { font-style: normal; color: var(--hot); font-variation-settings: "opsz" 96; position: relative; }
.lede { font-size: clamp(18px, 2.1vw, 22px); color: #cfd6d9; max-width: 640px; margin: 0 0 28px; }
.lede strong { color: var(--paper); }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 40px; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 20px; border-radius: 999px; font-weight: 700; font-size: 15px; text-decoration: none; border: 1px solid transparent; transition: transform .15s, background .15s; }
.btn:hover { transform: translateY(-1px); }
.btn-hot { background: var(--hot); color: #160700; }
.btn-hot:hover { background: var(--hot-2); color: #160700; }
.btn-ghost { border-color: var(--line-2); color: var(--paper); }
.btn-ghost:hover { border-color: var(--phos); color: var(--phos); }
.btn-discord { background: #5865f2; color: #fff; }
.btn-discord:hover { background: #6d78f5; color: #fff; }
.btn-discord svg { width: 18px; height: 18px; }

.stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; margin: 0; border: 1px solid var(--line); border-radius: var(--radius); background: color-mix(in srgb, var(--panel) 85%, transparent); backdrop-filter: blur(6px); max-width: 860px; }
.stats div { padding: 14px 18px; border-left: 1px solid var(--line); }
.stats div:first-child { border-left: 0; }
.stats dt { font-family: var(--mono); font-size: 11px; color: var(--dim); text-transform: uppercase; letter-spacing: .08em; }
.stats dd { margin: 4px 0 0; font-size: 26px; font-weight: 800; font-variant-numeric: tabular-nums; }
@media (max-width: 700px) {
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stats div:nth-child(3) { border-left: 0; }
  .stats div:nth-child(n+3) { border-top: 1px solid var(--line); }
}

.ticker { position: relative; z-index: 2; border-top: 1px solid var(--line); background: var(--hot); color: #160700; overflow: hidden; white-space: nowrap; font-family: var(--mono); font-size: 13px; font-weight: 600; }
.ticker-track { display: inline-flex; gap: 48px; padding: 9px 0; animation: tick 60s linear infinite; padding-left: 100%; }
.ticker-track span::before { content: "▲ "; }
@keyframes tick { to { transform: translateX(-100%); } }
@media (prefers-reduced-motion: reduce) { .ticker-track { animation: none; padding-left: 16px; } .dot { animation: none; } }

/* ---------- legend ---------- */
.legend { padding: 28px clamp(16px, 5vw, 64px); border-bottom: 1px solid var(--line); }
.legend ul { list-style: none; margin: 0 auto; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; max-width: 1240px; }
.legend li { display: flex; gap: 12px; align-items: flex-start; }
.legend p { margin: 0; font-size: 14px; color: var(--muted); }
.legend b { color: var(--paper); }
@media (max-width: 900px) { .legend ul { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 480px) { .legend ul { grid-template-columns: 1fr; } }

.stage { flex: none; display: inline-block; font-family: var(--mono); font-size: 11px; font-weight: 600; letter-spacing: .1em; padding: 4px 8px; border-radius: 6px; line-height: 1.2; }
.stage-rc { background: var(--hot); color: #160700; }
.stage-beta { background: var(--phos); color: #0b1a03; }
.stage-dev { background: transparent; color: var(--sky); box-shadow: inset 0 0 0 1.5px var(--sky); }
.stage-planning { background: transparent; color: var(--dim); box-shadow: inset 0 0 0 1.5px var(--line-2); border: 1px dashed var(--dim); padding: 3px 7px; box-shadow: none; }

/* ---------- sections ---------- */
.section { padding: clamp(56px, 8vw, 104px) clamp(16px, 5vw, 64px); max-width: 1368px; margin: 0 auto; }
.section-head { max-width: 760px; margin-bottom: 32px; }
.eyebrow { font-family: var(--mono); color: var(--hot); font-size: 13px; letter-spacing: .12em; text-transform: uppercase; margin: 0 0 10px; }
.section-head h2 { font-size: clamp(32px, 5vw, 56px); line-height: 1; letter-spacing: -.03em; margin: 0 0 14px; font-weight: 800; }
.section-head p:last-child { color: var(--muted); margin: 0; font-size: 18px; }

.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.chip { font: 600 13px var(--mono); color: var(--muted); background: var(--panel); border: 1px solid var(--line); padding: 7px 14px; border-radius: 999px; cursor: pointer; }
.chip:hover { color: var(--paper); border-color: var(--line-2); }
.chip.is-on { background: var(--paper); color: var(--ink); border-color: var(--paper); }

/* ---------- project cards ---------- */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 380px), 1fr)); gap: 20px; align-items: start; }
.card { position: relative; display: flex; flex-direction: column; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: border-color .2s, transform .2s; }
.card:hover { border-color: var(--line-2); }
.card[hidden] { display: none; }
.card-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 14px 18px; border-bottom: 1px dashed var(--line); font-family: var(--mono); font-size: 12px; color: var(--dim); }
.ch { color: var(--paper); font-weight: 600; letter-spacing: .06em; }
.ch i { font-style: normal; color: var(--dim); }
.net { text-transform: uppercase; letter-spacing: .08em; }
.net-Meshtastic { color: var(--phos); }
.net-MeshCore { color: var(--sky); }
.card-body { padding: 20px 18px 8px; flex: 1; display: flex; flex-direction: column; }
.card h3 { font-size: 26px; line-height: 1.05; letter-spacing: -.02em; margin: 0 0 8px; font-weight: 800; }
.card .tag { color: var(--muted); margin: 0 0 18px; font-size: 15.5px; }
.rel { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; background: var(--ink-2); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; margin-bottom: 14px; }
.rel .ver { font-family: var(--mono); font-weight: 600; font-size: 15px; color: var(--paper); word-break: break-all; }
.rel .date { font-family: var(--mono); font-size: 12px; color: var(--dim); margin-left: auto; }
.rel .none { font-family: var(--mono); font-size: 13px; color: var(--dim); }
.assets { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.asset { display: inline-flex; align-items: center; gap: 7px; font: 600 13px var(--mono); padding: 8px 12px; border-radius: 8px; text-decoration: none; background: var(--panel-2); color: var(--paper); border: 1px solid var(--line-2); }
.asset:hover { border-color: var(--hot); color: var(--hot-2); }
.asset svg { width: 15px; height: 15px; flex: none; }
.asset small { color: var(--dim); font-weight: 400; }
.plats { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 16px; padding: 0; list-style: none; }
.plat { font: 12px var(--mono); padding: 4px 8px; border-radius: 6px; border: 1px solid var(--line); color: var(--dim); }
.plat.st-build { color: var(--phos); border-color: color-mix(in srgb, var(--phos) 45%, transparent); }
.plat.st-ci { color: var(--sky); border-color: color-mix(in srgb, var(--sky) 45%, transparent); }
.plat.st-web { color: var(--amber); border-color: color-mix(in srgb, var(--amber) 40%, transparent); }
.plat.st-source { color: var(--muted); }
.plat.st-upstream, .plat.st-planned, .plat.st-hold { border-style: dashed; }

.origin { font-size: 14px; color: var(--muted); margin: auto 0 14px; padding-top: 4px; }
.origin b { color: var(--paper); }
.card details { border-top: 1px solid var(--line); }
.card summary { cursor: pointer; padding: 13px 18px; font: 600 13px var(--mono); color: var(--muted); list-style: none; display: flex; justify-content: space-between; }
.card summary::-webkit-details-marker { display: none; }
.card summary::after { content: "+"; color: var(--hot); font-size: 16px; line-height: 1; }
.card details[open] summary::after { content: "–"; }
.card summary:hover { color: var(--paper); }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; padding: 4px 18px 16px; }
.split h4 { font: 600 11px var(--mono); letter-spacing: .1em; text-transform: uppercase; margin: 0 0 8px; color: var(--dim); }
.split .add h4 { color: var(--hot); }
.split ul { margin: 0; padding-left: 16px; font-size: 14px; color: #cfd6d9; }
.split li { margin-bottom: 5px; }
.split li::marker { color: var(--line-2); }
.split .add li::marker { color: var(--hot); }
@media (max-width: 520px) { .split { grid-template-columns: 1fr; } }
.notes { margin: 0 18px 16px; font-size: 13px; color: var(--dim); }
.card-foot { display: flex; flex-wrap: wrap; gap: 14px; padding: 12px 18px; border-top: 1px solid var(--line); font: 13px var(--mono); background: var(--ink-2); }
.card-foot a { color: var(--muted); text-decoration: none; }
.card-foot a:hover { color: var(--hot-2); }
.card-foot .lic { margin-left: auto; color: var(--dim); }

/* ---------- platform matrix ---------- */
.matrix-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
.matrix { width: 100%; border-collapse: collapse; min-width: 720px; font-size: 14px; }
.matrix th, .matrix td { padding: 13px 14px; text-align: center; border-bottom: 1px solid var(--line); }
.matrix thead th { font: 600 12px var(--mono); color: var(--dim); text-transform: uppercase; letter-spacing: .08em; background: var(--ink-2); }
.matrix tbody th { text-align: left; font-weight: 700; white-space: nowrap; }
.matrix tbody th small { display: block; font: 11px var(--mono); color: var(--dim); font-weight: 400; }
.matrix tbody tr:last-child > * { border-bottom: 0; }
.matrix tbody tr:hover { background: var(--panel-2); }
.cell { display: inline-flex; align-items: center; gap: 6px; font: 12px var(--mono); color: var(--dim); }
.cell i { width: 10px; height: 10px; border-radius: 50%; display: inline-block; border: 1.5px solid currentColor; }
.cell.st-build { color: var(--phos); } .cell.st-build i { background: currentColor; }
.cell.st-ci { color: var(--sky); } .cell.st-ci i { background: linear-gradient(90deg, currentColor 50%, transparent 50%); }
.cell.st-web { color: var(--amber); } .cell.st-web i { border-radius: 2px; }
.cell.st-source { color: var(--muted); } .cell.st-source i { border-style: dotted; }
.cell.st-upstream, .cell.st-planned, .cell.st-hold { color: var(--muted); } .cell.st-upstream i, .cell.st-planned i, .cell.st-hold i { border-style: dashed; }
.cell.st-none { color: var(--line-2); } .cell.st-none i { display: none; }
.key { list-style: none; padding: 0; margin: 18px 0 0; display: flex; flex-wrap: wrap; gap: 10px 22px; }
.key li { font-size: 13px; color: var(--muted); }

/* ---------- release log ---------- */
.log { list-style: none; margin: 0; padding: 0; border-left: 2px solid var(--line); }
.log li { position: relative; padding: 0 0 22px 26px; }
.log li::before { content: ""; position: absolute; left: -7px; top: 6px; width: 12px; height: 12px; border-radius: 50%; background: var(--ink); border: 2px solid var(--hot); }
.log li.is-beta::before { border-color: var(--phos); }
.log li.is-dev::before { border-color: var(--sky); }
.log time { font: 12px var(--mono); color: var(--dim); display: block; }
.log .row { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 12px; }
.log .proj { font-weight: 700; font-size: 18px; }
.log a.tag { font: 600 14px var(--mono); }
.log .title { color: var(--muted); font-size: 14px; width: 100%; }
.log-empty::before { display: none; }
.log-empty { color: var(--dim); font-family: var(--mono); }

/* ---------- lineage ---------- */
.lineage { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 400px), 1fr)); gap: 16px; }
.lin { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 12px; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; }
.lin .node { min-width: 0; }
.lin .node small { display: block; font: 11px var(--mono); color: var(--dim); text-transform: uppercase; letter-spacing: .08em; margin-bottom: 2px; }
.lin .node b { display: block; font-size: 16px; line-height: 1.2; overflow-wrap: anywhere; }
.lin .node span { font: 12px var(--mono); color: var(--muted); overflow-wrap: anywhere; }
.lin .node a { color: inherit; text-decoration: none; }
.lin .node a:hover b { color: var(--hot-2); }
.lin .mine b { color: var(--hot); }
.lin .wire { display: flex; flex-direction: column; align-items: center; font: 600 10px var(--mono); color: var(--phos); text-transform: uppercase; letter-spacing: .08em; }
.lin .wire svg { width: 56px; height: 14px; }
.lin .lic { grid-column: 1 / -1; font: 12px var(--mono); color: var(--dim); border-top: 1px dashed var(--line); padding-top: 10px; }
.thanks { margin-top: 32px; }
.thanks h3 { font: 600 13px var(--mono); color: var(--dim); letter-spacing: .1em; text-transform: uppercase; }
.thanks ul { columns: 2 320px; padding-left: 18px; color: var(--muted); }
.thanks li { margin-bottom: 6px; break-inside: avoid; }

/* ---------- AI ---------- */
.ai-card { display: grid; grid-template-columns: auto 1fr; gap: 28px; align-items: start; border: 1px solid var(--hot); border-radius: var(--radius); padding: clamp(20px, 4vw, 36px); background: linear-gradient(135deg, color-mix(in srgb, var(--hot) 9%, var(--panel)), var(--panel) 60%); }
.ai-card h2 { margin: 0 0 10px; font-size: 28px; letter-spacing: -.02em; }
.ai-card p { margin: 0; color: #d6dcde; font-size: 17px; }
.ai-badge { width: 88px; height: 88px; border-radius: 50%; border: 2px dashed var(--hot); display: grid; place-content: center; text-align: center; font: 800 26px/1 var(--display); color: var(--hot); }
.ai-badge small { font: 600 10px var(--mono); letter-spacing: .1em; text-transform: uppercase; }
@media (max-width: 560px) { .ai-card { grid-template-columns: 1fr; } }
.fine { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; margin-top: 24px; font-size: 14px; color: var(--muted); }
.fine p { margin: 0; }
.fine b { color: var(--paper); }
@media (max-width: 800px) { .fine { grid-template-columns: 1fr; } }

/* ---------- support ---------- */
.support { padding-top: 0; }
.support-card { display: grid; grid-template-columns: auto 1fr auto; gap: 24px; align-items: center; border: 1px dashed var(--amber); border-radius: var(--radius); padding: clamp(20px, 4vw, 32px); background: color-mix(in srgb, var(--amber) 6%, var(--panel)); }
.support-cup { font-size: 44px; line-height: 1; }
.support-copy h2 { margin: 0 0 6px; font-size: 26px; letter-spacing: -.02em; }
.support-copy p { margin: 0; color: var(--muted); font-size: 16px; max-width: 640px; }
.btn-coffee { background: var(--amber); color: #1a1200; white-space: nowrap; }
.btn-coffee:hover { background: #ffd47a; color: #1a1200; }
@media (max-width: 700px) {
  .support-card { grid-template-columns: 1fr; text-align: left; }
  .btn-coffee { justify-self: start; }
}

.foot { border-top: 1px solid var(--line); padding: 28px clamp(16px, 5vw, 64px); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; font: 13px var(--mono); color: var(--dim); }
.foot p { margin: 0; }
.foot a { color: var(--muted); }
.brand-mini { color: var(--paper); font-weight: 700; letter-spacing: .08em; }