/* Status Quo Bot — the signal box: enamel plates, a lever frame, an illuminated track diagram, block instruments, a rule book */
@font-face { font-family: "Fjalla One"; src: url("../assets/fonts/FjallaOne-400.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Sarabun"; src: url("../assets/fonts/Sarabun-400.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Sarabun"; src: url("../assets/fonts/Sarabun-400i.woff2") format("woff2"); font-weight: 400; font-style: italic; font-display: swap; }
@font-face { font-family: "Sarabun"; src: url("../assets/fonts/Sarabun-500.woff2") format("woff2"); font-weight: 500; font-display: swap; }
@font-face { font-family: "Sarabun"; src: url("../assets/fonts/Sarabun-600.woff2") format("woff2"); font-weight: 600; font-display: swap; }
@font-face { font-family: "Frank Ruhl Libre"; src: url("../assets/fonts/FrankRuhlLibre-400.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Frank Ruhl Libre"; src: url("../assets/fonts/FrankRuhlLibre-700.woff2") format("woff2"); font-weight: 700; font-display: swap; }

:root {
  --cream: #F4EEDF; --cream2: #EAE1CC; --paper: #FBF8F0; --ink: #26221E; --mute: #685E54; --line: #D5CAB2;
  --maroon: #7A2420; --maroon-d: #5C1A17; --plate-fg: #FBF6EA;
  --diag: #1C2024; --diag2: #262B30; --rail: #59626B; --lit: #F5F1E6; --amber: #F2A93B; --green: #3DB57A; --red: #D8402F;
  --l-red: #C62D24; --l-yellow: #E2B514; --l-black: #1B1B1B; --l-blue: #1F4E8F; --l-brown: #7A4A26; --l-white: #ECEBE4;
  --brass: #B48B4A; --brass-d: #86662F; --brass-l: #E2C68E; --wood: #5E3B22; --wood-l: #7B5233; --iron: #3B3936;
  --disp: "Fjalla One", "Arial Narrow", Impact, sans-serif;
  --body: "Sarabun", system-ui, -apple-system, "Segoe UI", sans-serif;
  --serif: "Frank Ruhl Libre", Georgia, "Times New Roman", serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--cream); color: var(--ink); font: 400 17px/1.6 var(--body); overflow-x: hidden; }
h1, h2, h3, h4, p { margin: 0 0 12px; }
a { color: var(--l-blue); text-underline-offset: 3px; }
img, svg { max-width: 100%; }
:focus-visible { outline: 3px solid var(--amber); outline-offset: 2px; }
code, pre { font-family: var(--mono); }
.sprite { position: absolute; }
.vh { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: 12px; top: -60px; background: var(--amber); color: #000; padding: 8px 14px; z-index: 80; border-radius: 4px; }
.skip:focus { top: 12px; }
.lbl { display: block; font: 600 12.5px/1.3 var(--body); letter-spacing: .12em; text-transform: uppercase; color: var(--mute); margin: 0 0 6px; }
.note { font-size: 14px; color: var(--mute); margin: 8px 0 0; }
.msg { font-size: 14px; color: var(--mute); }
.msg.err { color: var(--l-red); }
.btn, .btn-copy, .btn-ghost { font: 600 15px/1 var(--body); border-radius: 6px; cursor: pointer; display: inline-flex; align-items: center; gap: 8px; padding: 11px 16px; }
.btn { background: var(--maroon); color: var(--plate-fg); border: 0; box-shadow: inset 0 -3px 0 var(--maroon-d); }
.btn:hover { background: var(--maroon-d); }
.btn svg, .btn-copy svg { width: 17px; height: 17px; }
.btn-copy { background: transparent; border: 1.5px solid currentColor; padding: 8px 12px; font-size: 14px; }
.btn-ghost { background: transparent; border: 1.5px solid var(--line); color: var(--ink); padding: 8px 12px; }
.fld { display: block; margin: 0 0 14px; }
.fld input[type=text], .fld input[type=number], .fld select, .fld textarea { width: 100%; font: 400 16px/1.4 var(--body); color: var(--ink); background: var(--paper); border: 1.5px solid var(--line); border-radius: 6px; padding: 10px 12px; }
.fld textarea { font: 400 15px/1.5 var(--mono); resize: vertical; }
.fld input[type=range] { width: 100%; accent-color: var(--maroon); }
.chk { display: inline-flex; align-items: center; gap: 8px; font-size: 15px; }
.chk input { accent-color: var(--maroon); width: 17px; height: 17px; }

/* ---------------------------------------------------------------- 1. the signal box */
.box { background: linear-gradient(#2E2925, #24201D); color: var(--plate-fg); padding: 40px 20px 46px; border-bottom: 8px solid var(--brass-d); }
.box-in { max-width: 1240px; margin: 0 auto; }
.nameplate { display: flex; align-items: center; justify-content: center; gap: 22px; width: fit-content; max-width: 100%; margin: 0 auto 10px; background: var(--maroon); border-radius: 14px; padding: 10px 30px; box-shadow: 0 0 0 4px #E8DFC9, 0 0 0 7px var(--maroon-d), 0 10px 26px rgba(0,0,0,.45); }
.nameplate h1 { font: 400 clamp(38px, 7vw, 86px)/1.05 var(--disp); letter-spacing: .06em; text-transform: uppercase; margin: 0; color: var(--plate-fg); }
.screw { width: 14px; height: 14px; border-radius: 50%; background: radial-gradient(circle at 35% 35%, #F2E6C8, #9C8456); flex: none; position: relative; }
.screw::after { content: ""; position: absolute; left: 2px; right: 2px; top: 6px; height: 2px; background: #6E5A33; transform: rotate(-30deg); }
.box-sub { text-align: center; font: 500 15px/1.4 var(--body); letter-spacing: .14em; text-transform: uppercase; color: var(--brass-l); margin: 18px 0 26px; }
.diagram { margin: 0 0 22px; padding: 10px; background: #14171A; border-radius: 16px; box-shadow: inset 0 0 0 2px #3A4047, 0 14px 34px rgba(0,0,0,.4); }
.diagram svg { display: block; width: 100%; height: auto; }
.dg-bg { fill: var(--diag); }
.rail { fill: none; stroke: var(--rail); stroke-width: 12; stroke-linecap: round; }
.route { fill: none; stroke-width: 5; stroke-linecap: round; stroke-dasharray: 18 10; }
.route.old { stroke: var(--lit); animation: run 1.4s linear infinite; }
.route.new { stroke: var(--amber); opacity: .85; animation: run 2.6s linear infinite; }
@keyframes run { to { stroke-dashoffset: -56; } }
.tcirc rect { fill: #11161A; stroke: var(--amber); stroke-width: 2; }
.tcirc text { fill: #8F99A3; font: 500 13px var(--body); }
.dg-src { font-size: 14px; color: #8F99A3; margin: 8px 8px 2px; }
.tcirc text { text-anchor: middle; }
.dg-lab { fill: #C9D0D6; font: 400 20px var(--disp); letter-spacing: .1em; }
.dg-big { fill: var(--lit); font: 400 54px var(--disp); }
.sig line { stroke: #5D666F; stroke-width: 5; }
.sig rect { fill: #0E1114; stroke: #47505A; stroke-width: 2; }
#lampOld { fill: var(--green); filter: drop-shadow(0 0 8px rgba(61,181,122,.9)); }
#lampNew { fill: var(--amber); filter: drop-shadow(0 0 8px rgba(242,169,59,.8)); }
.train { fill: var(--l-red); stroke: #F4B0A6; stroke-width: 2; animation: shunt 6s ease-in-out infinite alternate; }
@keyframes shunt { from { transform: translateX(0); } to { transform: translateX(200px); } }
.box-lede { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 28px; max-width: 1080px; margin: 0 auto 26px; }
.box-lede p { color: #E3DCCB; margin: 0; }
.box-lede .lede { font: 500 22px/1.45 var(--body); color: var(--plate-fg); }
.frame { background: linear-gradient(#3A2D25, #2B211B); border-radius: 12px; padding: 16px 18px 0; box-shadow: inset 0 0 0 2px #4F3E33; }
.frame-k { font: 600 12.5px/1 var(--body); letter-spacing: .16em; text-transform: uppercase; color: var(--brass-l); margin: 0 0 14px; }
.levers { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(8, minmax(0, 1fr)); gap: 10px; }
.lv { display: grid; grid-template-rows: 26px 92px auto auto; justify-items: center; text-decoration: none; color: var(--plate-fg); padding-bottom: 14px; }
.lv .hd { width: 40px; height: 22px; border-radius: 8px 8px 4px 4px; background: var(--c, var(--l-red)); box-shadow: inset 0 -4px 0 rgba(0,0,0,.25); transform-origin: 50% 400%; transition: transform .35s; }
.lv .sh { width: 12px; height: 92px; background: linear-gradient(90deg, #8D9297, #E5E7E9 45%, #7C8186); border-radius: 3px; transform-origin: 50% 100%; transition: transform .35s; }
.lv .no { margin-top: -2px; width: 34px; height: 34px; border-radius: 50%; background: var(--brass); color: #2B2014; font: 400 18px/34px var(--disp); text-align: center; box-shadow: inset 0 0 0 2px var(--brass-d); }
.lv .pl { margin-top: 8px; font: 600 13px/1.25 var(--body); text-align: center; color: #E9E1CF; }
.lv.red { --c: var(--l-red); } .lv.yellow { --c: var(--l-yellow); } .lv.black { --c: var(--l-black); } .lv.blue { --c: var(--l-blue); } .lv.brown { --c: var(--l-brown); } .lv.white { --c: var(--l-white); }
.lv.black .hd { box-shadow: inset 0 0 0 2px #666, inset 0 -4px 0 rgba(0,0,0,.25); }
.lv:hover .hd, .lv.pulled .hd { transform: translateY(14px) rotate(-14deg); }
.lv:hover .sh, .lv.pulled .sh { transform: rotate(-14deg); }
.lv.pulled .no { background: var(--brass-l); }

/* ---------------------------------------------------------------- sections */
.sec { padding: 64px 20px; }
.sec > * { max-width: 1180px; margin-left: auto; margin-right: auto; }
.sec.alt { background: var(--cream2); }
.plate-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 18px; flex-wrap: wrap; }
.plate { display: inline-flex; align-items: center; gap: 14px; margin: 0; background: var(--maroon); color: var(--plate-fg); font: 400 clamp(24px, 3.4vw, 34px)/1 var(--disp); letter-spacing: .08em; text-transform: uppercase; padding: 12px 22px 12px 12px; border-radius: 10px; box-shadow: 0 0 0 3px #E8DFC9, 0 0 0 5px var(--maroon-d); }
.plate > span:first-child { width: 40px; height: 40px; border-radius: 50%; background: var(--plate-fg); color: var(--maroon); display: grid; place-items: center; font-size: 22px; letter-spacing: 0; flex: none; }
.tofr { font: 600 14px var(--body); color: var(--mute); }
.intro { font-size: 18px; color: #4A423A; margin-bottom: 26px; max-width: 820px; margin-left: max(0px, calc((100% - 1180px) / 2)); }

/* 2. ask */
.ask-grid { display: grid; grid-template-columns: minmax(0, 380px) minmax(0, 1fr); gap: 36px; align-items: start; }
.seg { border: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px 18px; }
.seg legend { padding: 0; margin-bottom: 6px; }
.seg label { display: inline-flex; gap: 6px; align-items: center; font-size: 15px; }
.seg input { accent-color: var(--maroon); }
.routes { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.route-card { position: relative; background: var(--paper); border-radius: 10px; padding: 18px 18px 64px; border: 1.5px solid var(--line); border-top: 8px solid var(--c); }
.r-new { --c: var(--amber); } .r-old { --c: var(--green); }
.rc-k { font: 400 17px/1 var(--disp); letter-spacing: .08em; text-transform: uppercase; display: flex; align-items: center; gap: 8px; }
.rc-k .lamp { width: 13px; height: 13px; border-radius: 50%; background: var(--c); box-shadow: 0 0 0 3px #1C2024; }
.rc-q { font-size: 16.5px; line-height: 1.6; margin: 0; }
.rc-q mark { background: color-mix(in srgb, var(--c) 35%, transparent); color: inherit; padding: 0 2px; border-radius: 3px; }
.route-card .btn-copy { position: absolute; left: 18px; bottom: 16px; color: var(--ink); }
.route-card .btn-copy.done { color: var(--green); }
.routes > .note { grid-column: 1 / -1; margin: -4px 0 0; }
.sheet { grid-column: 1 / -1; background: var(--cream2); border-radius: 10px; padding: 16px 18px; }
.sheet-row { display: flex; flex-wrap: wrap; align-items: end; gap: 14px 18px; }
.fld.inline { margin: 0; flex: 1 1 200px; }

/* 3. the reader */
.rd-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 36px; align-items: start; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips button { font: 500 14px/1.2 var(--body); background: var(--paper); border: 1.5px solid var(--line); border-radius: 999px; padding: 7px 12px; cursor: pointer; color: var(--ink); text-align: left; }
.chips button:hover { border-color: var(--maroon); }
.rd-out { background: var(--diag); color: var(--lit); border-radius: 12px; padding: 22px 24px; display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 4px 22px; }
.aspect { grid-row: span 3; position: relative; height: 180px; }
.aspect .post { position: absolute; left: 54px; top: 22px; width: 10px; height: 118px; background: #6A737C; border-radius: 2px; }
.aspect .post::after { content: ""; position: absolute; left: -16px; bottom: -4px; width: 42px; height: 6px; background: #6A737C; border-radius: 3px; }
.aspect .arm { position: absolute; left: 59px; top: 28px; width: 70px; height: 20px; background: var(--red); border-radius: 0 4px 4px 0; transform-origin: 0 50%; transition: transform .4s; box-shadow: inset 6px 0 0 #fff; }
.aspect b { position: absolute; left: 0; right: 0; top: 146px; text-align: center; font: 400 26px var(--disp); letter-spacing: .1em; text-transform: uppercase; }
.aspect.yes .arm { transform: rotate(-45deg); background: var(--green); }
.aspect.unclear .arm { transform: rotate(-22deg); background: var(--amber); }
.aspect.yes b { color: var(--green); } .aspect.no b { color: #FF7766; } .aspect.unclear b { color: var(--amber); }
.rd-what { font: 600 15px var(--body); color: #C8CFD5; margin: 0; }
.rd-text { font-size: 17px; line-height: 1.6; margin: 0; }
.rd-text mark { background: var(--amber); color: #1C1C1C; padding: 0 3px; border-radius: 3px; }
.rd-plan { font-size: 15px; color: #C8CFD5; margin: 0; }
.rd-eval { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); gap: 36px; margin-top: 36px; }
table { border-collapse: collapse; width: 100%; }
.ev th, .ev td, .dt th, .dt td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); font-size: 15px; vertical-align: top; }
.ev thead th, .dt thead th { font: 600 12.5px var(--body); letter-spacing: .08em; text-transform: uppercase; color: var(--mute); }
.misses { margin: 0; padding-left: 22px; font-size: 15px; }
.misses li { margin-bottom: 6px; }
.misses em { font-style: normal; font: 600 12px var(--body); letter-spacing: .06em; text-transform: uppercase; color: var(--mute); margin-right: 6px; }

/* 4. the run */
.tabs { display: flex; width: fit-content; background: var(--cream2); border-radius: 8px; padding: 4px; margin-bottom: 18px; margin-left: max(0px, calc((100% - 1180px) / 2)); }
.tabs button { font: 600 15px var(--body); border: 0; background: transparent; padding: 9px 16px; border-radius: 6px; cursor: pointer; color: var(--ink); }
.tabs button[aria-pressed=true] { background: var(--maroon); color: var(--plate-fg); }
.run-ctrl { display: flex; flex-wrap: wrap; gap: 6px 24px; align-items: end; }
.run-ctrl[hidden] { display: none; }
.run-ctrl .fld { flex: 1 1 180px; }
.run-ctrl .fld.wide { flex: 1 1 100%; }
.run-ctrl .chk { margin-bottom: 16px; }
.csv-row { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.btn.file { position: relative; overflow: hidden; }
.btn.file input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.verdict-line { font: 500 19px/1.5 var(--body); background: var(--paper); border-left: 6px solid var(--maroon); padding: 14px 18px; border-radius: 0 8px 8px 0; margin: 10px auto 26px; }
.run-grid { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: 32px; align-items: start; }
.posts { margin: 0; }
.posts svg, #orSvg { display: block; width: 100%; height: auto; background: var(--diag); border-radius: 10px; }
.posts figcaption { font-size: 14px; color: var(--mute); margin-top: 8px; }
.pt-axis { stroke: #3A4148; } .pt-grid { stroke: #2C3238; stroke-dasharray: 3 5; }
.pt-txt { fill: #A9B2BA; font: 500 13px var(--body); }
.pt-post { stroke: #737C85; stroke-width: 4; }
.pt-old { fill: var(--green); } .pt-new { fill: var(--amber); }
.pt-gap { fill: var(--lit); font: 400 15px var(--disp); }
.lock .lbl { margin-top: 4px; }
.itab { margin-bottom: 10px; background: var(--paper); border-radius: 8px; overflow: hidden; }
.itab th, .itab td { padding: 10px 12px; border: 1px solid var(--line); font-size: 15px; text-align: center; }
.itab thead th, .itab tbody th { font: 600 12.5px var(--body); letter-spacing: .05em; text-transform: uppercase; color: var(--mute); background: var(--cream2); }
.itab td { font: 400 28px var(--disp); }
.itab td.hot { color: var(--maroon); background: #F5E3D8; }
.mono-line { font: 500 14px/1.5 var(--mono); color: var(--ink); margin: 0 0 18px; }
.run-low { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 32px; margin-top: 30px; }
.tw { overflow-x: auto; }
.dt td.g { font-weight: 600; white-space: nowrap; }
.register { list-style: none; margin: 0; padding: 0; max-height: 380px; overflow: auto; border: 1.5px solid var(--line); border-radius: 8px; background: var(--paper); }
.register li { padding: 10px 14px; border-bottom: 1px solid var(--line); font-size: 14.5px; }
.register li:last-child { border-bottom: 0; }
.register b { font: 400 15px var(--disp); letter-spacing: .05em; }
.register .ans { display: grid; grid-template-columns: 72px minmax(0, 1fr); gap: 2px 8px; margin-top: 4px; }
.register .ans span:nth-child(odd) { font: 600 12px/1.9 var(--body); letter-spacing: .06em; text-transform: uppercase; }
.register .k-old { color: #23865A; } .register .k-new { color: #B26E0E; }
.register .none { color: var(--mute); padding: 14px; }
.need { margin-top: 34px; background: var(--diag); color: var(--lit); border-radius: 12px; padding: 20px 22px 8px; }
.need .lbl { color: #A9B2BA; }
.need-row { display: flex; flex-wrap: wrap; gap: 6px 22px; align-items: end; }
.need-row .fld { flex: 1 1 200px; }
.need-row .fld input { background: var(--diag2); color: var(--lit); border-color: #444C54; }
.need-out { flex: 1 1 260px; margin: 0 0 16px; }
.need-out b { font: 400 44px/1 var(--disp); color: var(--amber); margin-right: 8px; }

/* 5. bring a model */
.three { list-style: none; margin: 0 auto; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; counter-reset: rt; }
.three li { background: var(--paper); border-radius: 10px; padding: 18px; border: 1.5px solid var(--line); counter-increment: rt; min-width: 0; }
.three h3 { font: 400 22px var(--disp); letter-spacing: .05em; text-transform: uppercase; }
.three h3::before { content: "Route " counter(rt) " · "; color: var(--maroon); }
.code { background: var(--diag); color: #E6E9EC; border-radius: 8px; padding: 14px 16px; font-size: 13.5px; line-height: 1.55; overflow-x: auto; margin: 10px 0 0; }
p code, td code, li code { background: rgba(122,36,32,.08); padding: 1px 5px; border-radius: 4px; font-size: .9em; }
.code code { background: none; padding: 0; font-size: inherit; border-radius: 0; }
.api { margin-top: 30px; }
.api-t td:first-child { white-space: nowrap; }
.api-t td:first-child code { background: none; padding: 0; color: var(--maroon); font-weight: 600; }
.cli { margin-top: 26px; }

/* 6. the token */
.tok { background: linear-gradient(#2B2622, #221E1B); color: var(--plate-fg); }
.tok .tofr { color: #BFB49F; }
.tok .lbl { color: var(--brass-l); }
.tok-grid { display: grid; grid-template-columns: minmax(0, 300px) minmax(0, 1fr); grid-template-areas: "tab shelf" "room room"; gap: 30px; }
.tablet-wrap { grid-area: tab; }
.hoop { width: 230px; height: 120px; margin: 0 auto -50px; border: 9px solid #6B5137; border-bottom: 0; border-radius: 120px 120px 0 0; }
.tablet { position: relative; width: 210px; height: 210px; margin: 0 auto 22px; border-radius: 50%; background: radial-gradient(circle at 35% 30%, #F0D9A6, var(--brass) 55%, var(--brass-d)); box-shadow: inset 0 0 0 10px rgba(0,0,0,.08), inset 0 0 0 12px #CFA965, 0 12px 28px rgba(0,0,0,.5); display: grid; place-content: center; text-align: center; color: #3A2A12; }
.tb-k { font: 600 11px var(--body); letter-spacing: .2em; text-transform: uppercase; margin: 0 0 4px; }
.tb-t { font: 400 46px/1 var(--disp); letter-spacing: .04em; margin: 0 0 6px; }
.tb-n { font: 600 13px var(--body); margin: 0; }
.ca code { display: block; background: #15120F; color: #F2E8D2; border: 1.5px solid #5A4A38; border-radius: 8px; padding: 12px; font-size: 13.5px; word-break: break-all; margin-bottom: 12px; }
.ca .msg { display: block; margin-top: 8px; color: var(--green); }
.shelf { grid-area: shelf; align-self: center; }
.blocks { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 12px; }
.blk { background: linear-gradient(var(--wood-l), var(--wood)); border-radius: 10px 10px 4px 4px; padding: 12px 10px 14px; text-align: center; box-shadow: inset 0 0 0 2px #8A6544, 0 8px 18px rgba(0,0,0,.35); }
.blk .bl { display: block; font: 600 11.5px var(--body); letter-spacing: .12em; text-transform: uppercase; color: #F1DFC0; margin-bottom: 8px; }
.blk b { display: block; background: #F6F1E4; color: #1D1A16; border-radius: 50% 50% 8px 8px / 30% 30% 8px 8px; padding: 18px 4px 12px; font: 400 21px/1.1 var(--disp); box-shadow: inset 0 0 0 3px #CBBFA6; overflow-wrap: anywhere; }
.blk b sub { font-size: .65em; }
.blk b.up { color: #1C7A4D; } .blk b.down { color: #B32C21; }
.shelf-at { font-size: 14px; color: #BFB49F; margin: 12px 0 16px; }
.facts { display: flex; flex-wrap: wrap; gap: 10px; margin: 0 0 18px; }
.facts div { background: #15120F; border: 1px solid #4A3D30; border-radius: 6px; padding: 8px 14px; }
.facts dt { font: 600 11px var(--body); letter-spacing: .12em; text-transform: uppercase; color: var(--brass-l); }
.facts dd { margin: 0; font: 400 20px var(--disp); }
.boards { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 12px; }
.boards a { display: inline-flex; align-items: center; gap: 10px; background: #F4EEDF; color: #1F2A2E; text-decoration: none; font: 400 19px var(--disp); letter-spacing: .06em; text-transform: uppercase; padding: 9px 16px 9px 10px; border-radius: 6px; border-bottom: 5px solid var(--maroon); }
.boards img { width: 24px; height: 24px; border-radius: 5px; object-fit: contain; background: #fff; }
.boards a:hover { background: #fff; }
.dgroom { grid-area: room; background: #14171A; border-radius: 14px; padding: 12px 12px 10px; box-shadow: inset 0 0 0 2px #3A4047; }
.dg-lamps { display: flex; gap: 10px; padding: 2px 6px 10px; }
.dg-lamps i { width: 12px; height: 12px; border-radius: 50%; background: #3C434A; }
.dg-lamps i:nth-child(1) { background: var(--green); box-shadow: 0 0 8px var(--green); }
.dg-lamps i:nth-child(4) { background: var(--amber); box-shadow: 0 0 8px var(--amber); }
.dg-frame { position: relative; height: 520px; border-radius: 8px; overflow: hidden; background: #fff; }
.dg-frame iframe { width: 100%; height: 100%; border: 0; display: block; }
.dg-wait { position: absolute; inset: 0; display: grid; place-items: center; background: #F4EEDF; color: var(--mute); font-size: 15px; text-align: center; padding: 20px; transition: opacity .4s; }
.dg-wait.off { opacity: 0; pointer-events: none; }
.dg-cap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; font-size: 14px; color: #A9B2BA; margin: 10px 4px 2px; }
.dg-cap a { color: var(--brass-l); display: inline-flex; align-items: center; gap: 6px; }
.dg-cap svg { width: 15px; height: 15px; }

/* 7. the rule book */
.book-sec { background: #DCD2BC; }
.book { background: var(--paper); border-radius: 4px; box-shadow: 0 2px 0 #C9BDA4, 0 18px 40px rgba(60,40,20,.18); padding: 46px 52px; font-family: var(--serif); }
.bk-head { text-align: center; border-bottom: 3px double var(--ink); padding-bottom: 22px; margin-bottom: 26px; }
.bk-k { font: 500 13px var(--body); letter-spacing: .14em; text-transform: uppercase; color: var(--mute); }
.bk-head h3 { font: 700 clamp(24px, 3vw, 34px)/1.2 var(--serif); max-width: 820px; margin: 0 auto 10px; }
.bk-by { font: italic 400 16px var(--serif); color: var(--mute); margin: 0; }
.bk-cols { column-count: 2; column-gap: 46px; column-rule: 1px solid var(--line); }
.rule { break-inside: avoid-column; display: grid; grid-template-columns: 62px minmax(0, 1fr); gap: 12px; margin-bottom: 22px; font-size: 17px; line-height: 1.6; }
.rule.refs, .rule:has(table) { column-span: all; }
.rule.refs { margin-top: 26px; }
.rn { font: 400 15px/1.5 var(--disp); letter-spacing: .06em; text-transform: uppercase; color: var(--maroon); border-top: 3px solid var(--maroon); padding-top: 4px; margin: 0; }
.rule h4 { font: 700 19px/1.3 var(--serif); margin-bottom: 6px; }
.rule p:last-child { margin-bottom: 0; }
.nc { background: #F1EAD9; border-left: 4px solid var(--maroon); padding: 10px 14px; font-size: 15.5px; }
.bt { margin: 4px 0 14px; font-family: var(--body); }
.bt caption { caption-side: top; text-align: left; font: italic 400 15.5px var(--serif); color: var(--mute); padding-bottom: 8px; }
.bt th, .bt td { border-top: 1px solid var(--ink); border-bottom: 1px solid var(--line); padding: 7px 10px; font-size: 15px; text-align: left; }
.refl { margin: 0; padding-left: 22px; font-size: 15.5px; columns: 2; column-gap: 40px; }
.refl li { margin-bottom: 6px; break-inside: avoid; }

/* 8. the depot */
.dp-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr); gap: 36px; align-items: start; }
.dls { display: grid; gap: 10px; margin-bottom: 26px; }
.dls a { display: grid; grid-template-columns: 22px minmax(0, 1fr); gap: 2px 10px; background: var(--paper); border: 1.5px solid var(--line); border-radius: 8px; padding: 12px 14px; text-decoration: none; color: var(--ink); }
.dls a:hover { border-color: var(--maroon); }
.dls svg { width: 20px; height: 20px; grid-row: span 2; color: var(--maroon); }
.dls b { font-weight: 600; }
.dls small { font: 12px/1.4 var(--mono); color: var(--mute); overflow-wrap: anywhere; }
.relnotes { background: var(--paper); border-radius: 8px; padding: 14px 18px; border: 1.5px solid var(--line); font-size: 15px; }
.relnotes ul { margin: 0; padding-left: 20px; }
.relnotes h3 { font: 400 18px var(--disp); letter-spacing: .05em; margin-bottom: 8px; }
.roads { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.roads button { width: 100%; display: grid; grid-template-columns: 34px minmax(0, 1fr) auto; align-items: center; gap: 12px; background: var(--paper); border: 1.5px solid var(--line); border-radius: 8px; padding: 9px 12px; cursor: pointer; text-align: left; color: var(--ink); font: 400 15px var(--body); border-left: 6px solid var(--rail); }
.roads button:hover { border-color: var(--maroon); }
.roads .rd-no { width: 30px; height: 30px; border-radius: 50%; background: var(--maroon); color: var(--plate-fg); font: 400 15px/30px var(--disp); text-align: center; }
.roads b { font: 500 15px var(--mono); padding-right: 10px; overflow-wrap: anywhere; }
.roads small { font: 12px var(--mono); color: var(--mute); padding-left: 10px; }
.viewer { margin-top: 26px; background: var(--paper); border: 1.5px solid var(--line); border-radius: 10px; overflow: hidden; }
.viewer-bar { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; padding: 10px 14px; background: var(--cream2); border-bottom: 1px solid var(--line); }
.viewer-bar b { font: 600 15px var(--mono); }
.viewer-bar span { flex: 1; font: 12px var(--mono); color: var(--mute); overflow-wrap: anywhere; }
.viewer-body { max-height: 560px; overflow: auto; }
.lines { margin: 0; padding: 12px 0; font: 13px/1.55 var(--mono); counter-reset: ln; }
.lines span { display: block; padding: 0 14px 0 64px; position: relative; white-space: pre; }
.lines span::before { counter-increment: ln; content: counter(ln); position: absolute; left: 0; width: 48px; text-align: right; color: #A79B87; }
.md { padding: 18px 24px; font-size: 16px; }
.md h1 { font: 400 30px var(--disp); } .md h2 { font: 400 22px var(--disp); margin-top: 22px; } .md h3 { font-size: 18px; }
.md table { margin: 10px 0 16px; } .md th, .md td { border: 1px solid var(--line); padding: 6px 10px; font-size: 14.5px; text-align: left; }
.md pre { background: var(--diag); color: #E6E9EC; padding: 12px 14px; border-radius: 8px; overflow-x: auto; font-size: 13px; }

/* 9. terminus */
.term { background: #1D1A17; color: var(--plate-fg); padding: 56px 20px 64px; border-top: 8px solid var(--brass-d); }
.term-in { max-width: 1080px; margin: 0 auto; display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 36px; align-items: center; }
.buffer { position: relative; height: 200px; }
.buffer .bm { position: absolute; left: 20px; right: 20px; top: 60px; height: 46px; background: var(--l-red); border-radius: 4px; box-shadow: inset 0 -6px 0 #8E1E17; background-image: repeating-linear-gradient(-45deg, transparent 0 16px, rgba(255,255,255,.85) 16px 30px); }
.buffer .bl1, .buffer .bl2 { position: absolute; top: 106px; width: 14px; height: 80px; background: #4A4743; }
.buffer .bl1 { left: 46px; transform: skewX(12deg); } .buffer .bl2 { right: 46px; transform: skewX(-12deg); }
.buffer .lamp-r { position: absolute; left: 96px; top: 22px; width: 28px; height: 28px; border-radius: 50%; background: var(--red); box-shadow: 0 0 16px var(--red); }
.buffer::after { content: ""; position: absolute; left: 0; right: 0; bottom: 6px; height: 8px; background: #6A737C; border-radius: 4px; }
.lineplate { border: 3px solid var(--brass); border-radius: 14px; padding: 26px 30px; box-shadow: inset 0 0 0 6px #1D1A17, inset 0 0 0 8px rgba(180,139,74,.5); }
.lp-big { font: 400 clamp(28px, 4vw, 44px)/1.1 var(--disp); letter-spacing: .05em; text-transform: uppercase; color: var(--brass-l); }
.lp-facts { display: flex; flex-wrap: wrap; gap: 8px 28px; margin: 0 0 18px; }
.lp-facts dt { font: 600 11.5px var(--body); letter-spacing: .14em; text-transform: uppercase; color: #9F937D; }
.lp-facts dd { margin: 0; font-size: 17px; }
.lp-links { list-style: none; padding: 0; margin: 0 0 18px; display: flex; flex-wrap: wrap; gap: 8px 22px; }
.lp-links a { color: var(--plate-fg); font-weight: 600; }
.lp-note { font-size: 13.5px; color: #A79C88; margin: 0; }

/* ---------------------------------------------------------------- small screens */
@media (max-width: 980px) {
  .box-lede, .ask-grid, .rd-grid, .rd-eval, .run-grid, .run-low, .dp-grid { grid-template-columns: minmax(0, 1fr); }
  .levers { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .three { grid-template-columns: minmax(0, 1fr); }
  .tok-grid { grid-template-columns: minmax(0, 1fr); grid-template-areas: "tab" "shelf" "room"; }
  .blocks { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .bk-cols { column-count: 1; }
  .refl { columns: 1; }
}
@media (max-width: 620px) {
  body { font-size: 16px; }
  .box { padding-top: 26px; }
  .nameplate { padding: 8px 16px; gap: 12px; }
  .routes { grid-template-columns: minmax(0, 1fr); }
  .lv { grid-template-rows: 22px 60px auto auto; }
  .lv .sh { height: 60px; }
  .lv .pl { font-size: 12px; }
  .sec { padding: 46px 16px; }
  .rd-out { grid-template-columns: minmax(0, 1fr); }
  .aspect { grid-row: auto; height: 180px; }
  .blocks { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .book { padding: 26px 18px; }
  .rule { grid-template-columns: minmax(0, 1fr); gap: 4px; }
  .rn { width: fit-content; }
  .dg-frame { height: 420px; }
  .api-t thead { display: none; }
  .api-t tr, .api-t td { display: block; }
  .api-t td { border: 0; padding: 2px 0; }
  .api-t tr { border-bottom: 1px solid var(--line); padding: 8px 0; }
  .api-t td:first-child { white-space: normal; overflow-wrap: anywhere; }
  .term-in { grid-template-columns: minmax(0, 1fr); }
  .buffer { height: 150px; max-width: 220px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .route.old, .route.new, .train { animation: none; }
  .lv .hd, .lv .sh, .aspect .arm { transition: none; }
}