:root{
  --bg:#0E1115; --bg2:#14181E; --panel:#1A1F27; --panel2:#20262F;
  --line:#2C333D; --line2:#39424E; --inset:#0A0D11;
  --ink:#EDF1F6; --ink2:#AEB7C4; --ink3:#6E7884;
  --heat:#FF6A2C; --heat2:#FF8A3D; --ember:#FFB23E;
  --blue:#56A8FF; --green:#3FD08B; --red:#FF5C5C; --violet:#A78BFA;
  --glow:rgba(255,106,44,.38); --bluglow:rgba(86,168,255,.30);
  --r:14px; --r2:10px; --r3:8px;
  --disp:'Space Grotesk',ui-sans-serif,system-ui,sans-serif;
  --body:'Inter',ui-sans-serif,system-ui,-apple-system,sans-serif;
  --mono:'JetBrains Mono',ui-monospace,'SF Mono','Cascadia Code',Consolas,monospace;
  --shadow:0 1px 0 rgba(255,255,255,.03) inset, 0 18px 40px -24px rgba(0,0,0,.8);
}
[data-theme="light"]{
  --bg:#EEF0F3; --bg2:#E6E9ED; --panel:#FFFFFF; --panel2:#F6F7F9;
  --line:#E0E4EA; --line2:#CDD3DC; --inset:#11151B;
  --ink:#161A20; --ink2:#4A535F; --ink3:#7B848F;
  --shadow:0 1px 0 rgba(255,255,255,.6) inset, 0 14px 32px -22px rgba(20,30,50,.35);
}
*{box-sizing:border-box}
.tmw{all:initial}
.tmw,.tmw *{font-family:var(--body);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
.tmw{
  display:block; color:var(--ink); background:
    radial-gradient(1200px 500px at 80% -10%, rgba(255,106,44,.06), transparent 60%),
    radial-gradient(900px 400px at -5% 0%, rgba(86,168,255,.05), transparent 55%),
    var(--bg);
  border:1px solid var(--line); border-radius:var(--r); padding:0;
  max-width:1140px; margin:0 auto; overflow:hidden; box-shadow:var(--shadow);
  container-type:inline-size; line-height:1.5; font-size:16px;
}
.tmw *{box-sizing:border-box}
.tmw h1,.tmw h2,.tmw h3,.tmw h4{font-family:var(--disp);margin:0;font-weight:600;letter-spacing:-.01em;color:var(--ink)}
.tmw p{margin:0}
.tmw a{color:var(--heat2);text-decoration:none}
.tmw a:hover{text-decoration:underline}

/* header */
.t-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;
  padding:20px 24px 18px;border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,var(--bg2),transparent)}
.t-brand{display:flex;flex-direction:column;gap:7px;min-width:0}
.t-eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);
  font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink3)}
.t-eyebrow b{color:var(--heat);font-weight:600}
.t-spark{width:8px;height:8px;border-radius:2px;background:var(--heat);
  box-shadow:0 0 10px var(--glow);transform:rotate(45deg)}
.t-title{font-size:clamp(22px,4cqw,30px);line-height:1.05}
.t-sub{font-size:13.5px;color:var(--ink2);max-width:62ch}
.t-tools{display:flex;align-items:center;gap:8px;flex-shrink:0}
.t-icon{appearance:none;border:1px solid var(--line2);background:var(--panel);color:var(--ink2);
  width:38px;height:38px;border-radius:var(--r3);cursor:pointer;display:grid;place-items:center;
  font-size:15px;transition:.15s}
.t-icon:hover{color:var(--ink);border-color:var(--heat);background:var(--panel2)}
.t-icon svg{width:17px;height:17px;stroke:currentColor;fill:none;stroke-width:1.8}

/* body grid */
.t-body{padding:22px 24px 8px;display:grid;gap:18px}
@container (min-width:780px){ .t-cols{grid-template-columns:1fr 1fr;display:grid;gap:18px;align-items:start} }
.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:18px}
.panel-h{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--ink3);margin-bottom:14px;display:flex;align-items:center;gap:8px}
.panel-h::after{content:"";flex:1;height:1px;background:var(--line)}

/* controls */
.field{display:flex;flex-direction:column;gap:7px;margin-bottom:14px}
.field>label{font-size:12.5px;color:var(--ink2);font-weight:500;display:flex;justify-content:space-between;align-items:center}
.field>label .hint{color:var(--ink3);font-family:var(--mono);font-size:11px}
.inp,.sel{appearance:none;width:100%;background:var(--panel2);border:1px solid var(--line2);
  color:var(--ink);border-radius:var(--r2);padding:12px 13px;font-size:16px;font-family:var(--mono);
  transition:.15s;outline:none}
.inp:focus,.sel:focus{border-color:var(--heat);box-shadow:0 0 0 3px var(--glow)}
.sel{background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238A94A2' stroke-width='2.4'><path d='M6 9l6 6 6-6'/></svg>");
  background-repeat:no-repeat;background-position:right 12px center;padding-right:34px;cursor:pointer}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.row3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px}

/* segmented control */
.seg{display:inline-flex;background:var(--panel2);border:1px solid var(--line2);border-radius:var(--r2);padding:3px;gap:2px;flex-wrap:wrap}
.seg button{appearance:none;border:0;background:transparent;color:var(--ink2);font-family:var(--mono);
  font-size:12.5px;font-weight:500;padding:8px 13px;border-radius:7px;cursor:pointer;transition:.14s;letter-spacing:.02em}
.seg button:hover{color:var(--ink)}
.seg button[aria-pressed="true"]{background:var(--heat);color:#1a0d06;box-shadow:0 4px 14px -6px var(--glow)}
.seg.blu button[aria-pressed="true"]{background:var(--blue);color:#06121f;box-shadow:0 4px 14px -6px var(--bluglow)}

/* chips */
.chips{display:flex;flex-wrap:wrap;gap:7px;margin-top:2px}
.chip{appearance:none;border:1px solid var(--line2);background:var(--panel2);color:var(--ink2);
  font-family:var(--mono);font-size:12px;padding:6px 11px;border-radius:99px;cursor:pointer;transition:.14s}
.chip:hover{border-color:var(--heat);color:var(--ink)}
.chip.on{background:var(--heat);color:#1a0d06;border-color:var(--heat)}

/* slider */
.slide{-webkit-appearance:none;appearance:none;width:100%;height:6px;border-radius:99px;outline:none;
  background:linear-gradient(90deg,var(--heat) 0%,var(--heat) var(--p,75%),var(--line2) var(--p,75%));}
.slide::-webkit-slider-thumb{-webkit-appearance:none;width:20px;height:20px;border-radius:50%;
  background:#fff;border:4px solid var(--heat);cursor:pointer;box-shadow:0 2px 8px rgba(0,0,0,.4)}
.slide::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:#fff;border:4px solid var(--heat);cursor:pointer}

/* DRO readout (the signature element) */
.dro{position:relative;background:
   linear-gradient(180deg,#0c0f13,#070a0d);
   border:1px solid var(--line2);border-radius:var(--r);padding:20px 22px;overflow:hidden;
   box-shadow:inset 0 2px 24px rgba(0,0,0,.7), inset 0 0 0 1px rgba(255,255,255,.02)}
[data-theme="light"] .dro{background:linear-gradient(180deg,#10151c,#0a0e13)}
.dro::before{content:"";position:absolute;inset:0;background:repeating-linear-gradient(0deg,
  rgba(255,255,255,.022) 0 1px,transparent 1px 3px);pointer-events:none}
.dro-label{font-family:var(--mono);font-size:10.5px;letter-spacing:.18em;text-transform:uppercase;color:#5c6672}
.dro-main{font-family:var(--mono);font-weight:600;color:#fff;line-height:1;
  font-size:clamp(34px,9cqw,58px);letter-spacing:-.02em;margin:8px 0 2px;
  text-shadow:0 0 22px var(--glow)}
.dro-main .u{font-size:.42em;color:var(--ember);margin-left:8px;letter-spacing:0;text-shadow:none;font-weight:500}
.dro-sub{font-family:var(--mono);font-size:13px;color:#aeb7c4}
.dro-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--r2);overflow:hidden;margin-top:16px}
.dro-cell{background:#0b0e12;padding:12px 13px}
.dro-cell .k{font-family:var(--mono);font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:#5c6672}
.dro-cell .v{font-family:var(--mono);font-size:19px;font-weight:600;color:#e9edf2;margin-top:5px;text-shadow:0 0 14px rgba(86,168,255,.18)}
.dro-cell .v small{font-size:12px;color:#7c8693;font-weight:400}
.dro-cell.hot .v{color:var(--ember);text-shadow:0 0 16px var(--glow)}

/* callouts */
.note{display:flex;gap:11px;padding:12px 14px;border-radius:var(--r2);font-size:13px;line-height:1.5;
  background:var(--panel2);border:1px solid var(--line);color:var(--ink2);margin-top:14px}
.note .i{flex-shrink:0;width:18px;height:18px;border-radius:5px;display:grid;place-items:center;
  font-family:var(--mono);font-weight:700;font-size:12px;color:#1a0d06;background:var(--ember);margin-top:1px}
.note.warn{border-color:rgba(255,92,92,.4);background:rgba(255,92,92,.07)} .note.warn .i{background:var(--red);color:#1a0606}
.note.ok{border-color:rgba(63,208,139,.35);background:rgba(63,208,139,.07)} .note.ok .i{background:var(--green);color:#04140b}
.note b{color:var(--ink)}

/* tables */
.tbl-wrap{overflow:auto;border:1px solid var(--line);border-radius:var(--r2);margin-top:4px;-webkit-overflow-scrolling:touch}
table.t{border-collapse:collapse;width:100%;font-family:var(--mono);font-size:13px;white-space:nowrap}
table.t th,table.t td{padding:9px 13px;text-align:right;border-bottom:1px solid var(--line)}
table.t th:first-child,table.t td:first-child{text-align:left}
table.t thead th{position:sticky;top:0;background:var(--panel2);color:var(--ink3);font-weight:600;
  font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;z-index:1}
table.t tbody tr:hover{background:var(--panel2)}
table.t tbody td{color:var(--ink2)}
table.t tbody tr.on{background:rgba(255,106,44,.13)}
table.t tbody tr.on td{color:var(--ink);font-weight:600}
table.t tbody tr.on td:first-child{box-shadow:inset 3px 0 0 var(--heat)}

/* misc */
.tag{font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;
  padding:3px 8px;border-radius:6px;background:var(--panel2);border:1px solid var(--line2);color:var(--ink2)}
.tag.hot{color:var(--heat);border-color:rgba(255,106,44,.4)}
.tag.grn{color:var(--green);border-color:rgba(63,208,139,.4)}
.tag.red{color:var(--red);border-color:rgba(255,92,92,.4)}
.swap{display:grid;place-items:center;margin:2px auto}
.swapbtn{appearance:none;border:1px solid var(--line2);background:var(--panel);color:var(--ink2);
  width:40px;height:40px;border-radius:50%;cursor:pointer;transition:.18s;display:grid;place-items:center}
.swapbtn:hover{transform:rotate(180deg);border-color:var(--heat);color:var(--heat)}
.swapbtn svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:2}

/* explainer + footer */
.t-explain{padding:8px 24px 4px;display:grid;gap:16px}
@container (min-width:780px){ .t-explain.two{grid-template-columns:1fr 1fr} }
.t-explain h3{font-size:16px;margin-bottom:8px}
.t-explain p{font-size:13.5px;color:var(--ink2);line-height:1.6}
.t-explain code{font-family:var(--mono);background:var(--panel2);border:1px solid var(--line);
  padding:2px 6px;border-radius:5px;font-size:12.5px;color:var(--ember)}
.formula{font-family:var(--mono);font-size:13px;background:var(--inset);color:#cfe0ff;
  border:1px solid var(--line2);border-radius:var(--r2);padding:14px 16px;line-height:1.7;overflow-x:auto}
[data-theme="light"] .formula{background:#10151c}
.faq details{border:1px solid var(--line);border-radius:var(--r2);padding:0;margin-bottom:8px;background:var(--panel)}
.faq summary{cursor:pointer;padding:13px 16px;font-weight:500;font-size:14px;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--mono);color:var(--heat);font-size:18px}
.faq details[open] summary::after{content:"−"}
.faq p{padding:0 16px 14px;font-size:13.5px;color:var(--ink2)}

.t-foot{margin-top:14px;padding:20px 24px 22px;border-top:1px solid var(--line);
  background:linear-gradient(0deg,var(--bg2),transparent);
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap}
.t-foot-l{display:flex;flex-direction:column;gap:5px;min-width:0}
.t-std{font-family:var(--mono);font-size:11px;color:var(--ink3);letter-spacing:.04em}
.t-std b{color:var(--ink2)}
.t-cred{font-size:12.5px;color:var(--ink2)}
.t-cred b{color:var(--ink)}
.cta{appearance:none;border:0;cursor:pointer;font-family:var(--disp);font-weight:600;font-size:14px;
  color:#1a0d06;background:linear-gradient(180deg,var(--heat2),var(--heat));
  padding:13px 20px;border-radius:var(--r2);display:inline-flex;align-items:center;gap:9px;
  box-shadow:0 10px 26px -12px var(--glow);transition:.15s;text-decoration:none;white-space:nowrap}
.cta:hover{transform:translateY(-1px);box-shadow:0 14px 30px -12px var(--glow);text-decoration:none}
.cta svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2}

.toast{position:fixed;left:50%;bottom:26px;transform:translateX(-50%) translateY(20px);
  background:var(--ink);color:var(--bg);font-family:var(--mono);font-size:13px;font-weight:600;
  padding:11px 18px;border-radius:99px;opacity:0;pointer-events:none;transition:.25s;z-index:9999;box-shadow:0 12px 30px rgba(0,0,0,.4)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* embed dialog */
.modal{position:fixed;inset:0;background:rgba(5,7,10,.72);backdrop-filter:blur(4px);z-index:9998;
  display:none;align-items:center;justify-content:center;padding:20px}
.modal.show{display:flex}
.modal-box{background:var(--panel);border:1px solid var(--line2);border-radius:var(--r);max-width:560px;width:100%;padding:22px}
.modal-box h3{font-size:18px;margin-bottom:6px}
.modal-box p{font-size:13px;color:var(--ink2);margin-bottom:14px}
.modal-box textarea{width:100%;height:120px;background:var(--inset);border:1px solid var(--line2);border-radius:var(--r2);
  color:#cfe0ff;font-family:var(--mono);font-size:12px;padding:12px;resize:none}
.modal-row{display:flex;gap:10px;margin-top:14px;justify-content:flex-end}

@media (max-width:540px){
  .t-head{flex-direction:column;align-items:stretch;gap:14px}
  .t-tools{justify-content:flex-start}
  .row3{grid-template-columns:1fr 1fr}
}
@media (prefers-reduced-motion:reduce){ .tmw *{transition:none!important;animation:none!important} }

/* print */
@media print{
  .tmw{ font-size:10px !important; line-height:1.3 !important; }
  .t-head{ padding:0 0 5px !important; margin:0 0 8px !important; border-bottom:1px solid #000 !important; }
  .t-title{ font-size:15px !important; line-height:1.1 !important; }
  .t-sub{ display:none !important; }
  .t-eyebrow{ font-size:8px !important; }
  /* strip everything non-critical */
  .cta,.copyrow,.copybtn,.chips,.swapbtn,.plabel,#hPresets,#presetChips,#catChips,.toast,
  .t-explain,.faq,details,.t-foot,#rulerWrap,#barWrap,#svgWrap,#refTable,.note,
  input[type="range"]{ display:none !important; }
  .t-body{ padding:0 !important; }
  .t-cols{ display:grid !important; grid-template-columns:1fr 1fr !important; gap:8px !important; align-items:start !important; }
  .panel,.dro,.utsbar,.fcard,.sheetgrid,.dro-grid{ border:1px solid #999 !important; padding:7px !important; margin:0 0 7px !important; break-inside:avoid !important; }
  .panel-h{ font-size:8px !important; margin-bottom:7px !important; }
  .dro::before{ display:none !important; }
  .dro-cell{ border:1px solid #ccc !important; padding:5px 7px !important; }
  .dro-main{ font-size:18px !important; }
  .dro-cell .v{ font-size:13px !important; }
  #hAll .dro-cell .v{ font-size:14px !important; }
  .dro-cell .k{ font-size:8px !important; }
  .bigres .n{ font-size:20px !important; }
  .sel,.inp,.seg button,.field>label{ font-size:10px !important; }
  .sel,.inp{ padding:4px 6px !important; }
  table{ border-collapse:collapse !important; width:100% !important; font-size:9px !important; }
  th,td{ border:1px solid #bbb !important; padding:1px 4px !important; }
}

#rulerWrap{margin-top:16px;background:var(--inset);border:1px solid var(--line2);border-radius:var(--r2);padding:14px 10px}
[data-theme="light"] #rulerWrap{background:#10151c}
#hPresets{display:flex;flex-wrap:wrap;gap:7px;align-items:center;margin-top:12px}
.plabel{font-family:var(--mono);font-size:11px;color:var(--ink3);letter-spacing:.08em;text-transform:uppercase;margin-right:2px}
.allhead{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.allhead .panel-h{flex:1;margin:0}
#hAll.dro-grid-lg{grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}
#hAll .dro-cell{padding:16px 15px}
#hAll .dro-cell .k{font-size:11px}
#hAll .dro-cell .v{font-size:30px;text-shadow:0 0 14px rgba(86,168,255,.18)}
.utsbar{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);
  border-radius:var(--r2);overflow:hidden;margin-top:14px}
.utsbar .dro-cell .v{color:var(--ember);text-shadow:0 0 16px var(--glow)}
.copyrow{display:flex;justify-content:flex-end;margin-top:12px}
.copybtn{appearance:none;cursor:pointer;border:1px solid var(--line2);background:var(--panel2);color:var(--ink2);
  font-family:var(--mono);font-size:12px;padding:8px 13px;border-radius:var(--r3);display:inline-flex;align-items:center;gap:7px;transition:.15s}
.copybtn:hover{border-color:var(--heat);color:var(--ink)}
.copybtn svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:2}