:root{
  --ink:#0E1420;
  --panel:#161D2B;
  --panel-2:#1D2637;
  --hair:#2A3448;
  --paper:#EDE7D9;
  --paper-dim:#A7A395;
  --brass:#C9A24B;
  --brass-bright:#E4C169;
  --teal:#3FA79A;
  --red:#C1554B;
  --mono: 'IBM Plex Mono', 'Courier New', monospace;
  --slab: 'Roboto Slab', Georgia, serif;
  --sans: 'IBM Plex Sans', Helvetica, Arial, sans-serif;
}
:root[data-theme="light"]{
  --ink:#F3EFE4;
  --panel:#FFFFFF;
  --panel-2:#FBF9F3;
  --hair:#DAD4C2;
  --paper:#1A2130;
  --paper-dim:#6B6F7A;
  --brass:#B8872F;
  --brass-bright:#8F6821;
  --teal:#2D8074;
  --red:#A83F35;
}
:root[data-theme="light"] body{
  background: radial-gradient(ellipse at top left, #FFFFFF 0%, var(--ink) 55%);
}
:root[data-theme="light"] #qrcode{ border:1px solid var(--hair); }

.theme-toggle{
  border:1px solid var(--hair);background:var(--panel);color:var(--paper-dim);
  padding:6px 14px;border-radius:20px;font-family:var(--mono);font-size:12px;cursor:pointer;
}
.theme-toggle:hover{border-color:var(--brass);color:var(--brass-bright);}

*{box-sizing:border-box;}
body{
  margin:0;
  background: radial-gradient(ellipse at top left, #131A28 0%, var(--ink) 55%);
  color:var(--paper);
  font-family:var(--sans);
  padding:0 0 60px;
}
.wrap{max-width:1040px;margin:0 auto;padding:28px 20px;}

header{
  display:flex;justify-content:space-between;align-items:flex-end;
  border-bottom:1px solid var(--hair);
  padding-bottom:18px;margin-bottom:14px;flex-wrap:wrap;gap:16px;
}
.brand{display:flex;align-items:center;gap:14px;}
.pulse-ring{
  width:46px;height:46px;border-radius:50%;
  border:2px solid var(--hair);position:relative;flex-shrink:0;
}
.pulse-ring::before{
  content:'';position:absolute;inset:-2px;border-radius:50%;
  border:2px solid var(--brass);border-top-color:transparent;border-right-color:transparent;
  animation:spin 15s linear infinite;
}
.pulse-ring::after{
  content:'';position:absolute;inset:8px;border-radius:50%;background:var(--brass);
  animation:blip 15s steps(1) infinite;
}
@keyframes spin{to{transform:rotate(360deg);}}
@keyframes blip{0%,96%{opacity:1;}97%,100%{opacity:0.15;}}
.brand h1{font-family:var(--slab);font-size:22px;margin:0;letter-spacing:.3px;font-weight:700;}
.brand p{margin:2px 0 0;font-size:12px;color:var(--paper-dim);font-family:var(--mono);letter-spacing:.5px;}
.pulse-label{font-size:10px;color:var(--paper-dim);font-family:var(--mono);text-align:center;margin-top:4px;}

nav.tabs{display:flex;gap:8px;margin-bottom:24px;}
nav.tabs a{
  font-family:var(--mono);font-size:12px;letter-spacing:.4px;text-decoration:none;
  color:var(--paper-dim);border:1px solid var(--hair);padding:8px 16px;border-radius:20px;
}
nav.tabs a.active{color:var(--brass-bright);border-color:var(--brass);background:rgba(201,162,75,.08);}

.status-banner{
  background:var(--panel-2);border:1px solid var(--hair);border-left:3px solid var(--brass);
  padding:12px 16px;border-radius:4px;font-size:13px;color:var(--paper-dim);
  display:flex;gap:10px;align-items:baseline;flex-wrap:wrap;margin-bottom:24px;
}
.status-banner b{color:var(--brass-bright);font-family:var(--mono);}

.strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--hair);border:1px solid var(--hair);border-radius:6px;overflow:hidden;
  margin-bottom:28px;
}
.strip .cell{background:var(--panel);padding:16px 18px;}
.strip .cell .k{font-size:11px;color:var(--paper-dim);text-transform:uppercase;letter-spacing:.8px;font-family:var(--mono);}
.strip .cell .v{font-family:var(--mono);font-size:20px;margin-top:6px;color:var(--paper);}
.strip .cell .v.up{color:var(--teal);}
.strip .cell .v.down{color:var(--red);}

section{margin-bottom:32px;}
.section-head{display:flex;align-items:baseline;gap:10px;margin-bottom:14px;}
.eyebrow{font-family:var(--mono);font-size:11px;color:var(--brass);letter-spacing:1.5px;text-transform:uppercase;}
h2{font-family:var(--slab);font-size:20px;margin:0;font-weight:700;}

.card{background:var(--panel);border:1px solid var(--hair);border-radius:8px;padding:24px;}
.calc-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:28px;}
@media(max-width:720px){.calc-grid{grid-template-columns:1fr;}}
label{display:block;font-size:12px;color:var(--paper-dim);font-family:var(--mono);margin-bottom:6px;letter-spacing:.4px;}
input[type=number],input[type=text]{
  width:100%;background:var(--ink);border:1px solid var(--hair);color:var(--paper);
  padding:11px 12px;border-radius:5px;font-family:var(--mono);font-size:16px;margin-bottom:18px;
}
input[type=number]:focus,input[type=text]:focus{outline:none;border-color:var(--brass);}
.row{display:flex;gap:12px;}
.row > div{flex:1;}
.slider-block{margin-bottom:18px;}
input[type=range]{width:100%;accent-color:var(--brass);}
.slider-vals{display:flex;justify-content:space-between;font-family:var(--mono);font-size:12px;color:var(--paper-dim);margin-top:4px;}
.pill-group{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px;}
.pill{border:1px solid var(--hair);background:var(--ink);color:var(--paper-dim);
  padding:6px 12px;border-radius:20px;font-family:var(--mono);font-size:12px;cursor:pointer;}
.pill.active{border-color:var(--brass);color:var(--brass-bright);background:rgba(201,162,75,.08);}

.vault-readout{background:var(--panel-2);border:1px solid var(--hair);border-radius:8px;padding:20px;
  display:flex;flex-direction:column;gap:14px;}
.lock-visual{display:flex;align-items:center;gap:14px;}
.lock-svg{flex-shrink:0;}
.readout-line{display:flex;justify-content:space-between;align-items:baseline;font-family:var(--mono);font-size:13px;border-bottom:1px dashed var(--hair);padding-bottom:8px;}
.readout-line .lbl{color:var(--paper-dim);}
.readout-line .val{color:var(--paper);font-size:15px;}
.readout-line.hero .val{color:var(--brass-bright);font-size:24px;}
.ratio-badge{display:inline-block;padding:3px 10px;border-radius:4px;font-family:var(--mono);font-size:11px;
  border:1px solid var(--teal);color:var(--teal);}
.ratio-badge.risky{border-color:var(--red);color:var(--red);}

.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;}
@media(max-width:720px){.stat-grid{grid-template-columns:1fr 1fr;}}
.stat{background:var(--panel);border:1px solid var(--hair);border-radius:6px;padding:16px;}
.stat .k{font-size:11px;color:var(--paper-dim);font-family:var(--mono);text-transform:uppercase;letter-spacing:.6px;}
.stat .v{font-family:var(--mono);font-size:18px;margin-top:6px;}
.stat .stat-note{font-size:11px;color:var(--paper-dim);margin-top:4px;font-family:var(--sans);}

.learn-item{margin-bottom:22px;}
.learn-item h3{font-family:var(--slab);font-size:15px;margin:0 0 6px;color:var(--brass-bright);}
.learn-item p{margin:0;font-size:13.5px;line-height:1.7;color:var(--paper-dim);}

.btn{padding:12px;background:var(--brass);border:none;border-radius:5px;color:var(--ink);
  font-family:var(--mono);font-weight:700;cursor:pointer;font-size:13px;}
.btn-outline{background:transparent;border:1px solid var(--brass);color:var(--brass-bright);
  padding:10px;border-radius:5px;font-family:var(--mono);cursor:pointer;font-size:12px;width:100%;}
.warn{font-size:11px;color:var(--red);font-family:var(--mono);margin:-10px 0 12px;}

footer{border-top:1px solid var(--hair);margin-top:20px;padding-top:18px;
  font-size:11.5px;color:var(--paper-dim);line-height:1.6;font-family:var(--mono);}
footer b{color:var(--paper);}
footer .footer-credit{margin-top:12px;padding-top:12px;border-top:1px dashed var(--hair);}
a{color:var(--teal);}
.loading{color:var(--paper-dim);font-style:italic;font-family:var(--mono);font-size:12px;}

/* How-it-works flow diagram */
.flow-diagram{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.flow-step{flex:1;min-width:160px;background:var(--panel-2);border:1px solid var(--hair);border-radius:8px;
  padding:16px;text-align:center;}
.flow-step .flow-icon{font-size:22px;margin-bottom:8px;}
.flow-step .flow-title{font-family:var(--slab);font-size:14px;color:var(--paper);margin-bottom:4px;}
.flow-step .flow-note{font-size:11.5px;color:var(--paper-dim);line-height:1.5;}
.flow-arrow{flex:0 0 auto;font-size:22px;color:var(--brass);font-family:var(--mono);}
@media(max-width:720px){.flow-diagram{flex-direction:column;}.flow-arrow{transform:rotate(90deg);}}

/* Glossary */
.glossary-list dt{font-family:var(--mono);font-size:14px;color:var(--brass-bright);margin-top:16px;}
.glossary-list dt:first-child{margin-top:0;}
.glossary-list dd{margin:4px 0 0;font-size:13.5px;color:var(--paper-dim);line-height:1.7;}

/* Ratio calculator table */
.ratio-table{width:100%;border-collapse:collapse;font-family:var(--mono);font-size:13px;margin-top:6px;}
.ratio-table th{text-align:left;color:var(--paper-dim);font-size:11px;text-transform:uppercase;letter-spacing:.6px;
  padding:8px 10px;border-bottom:1px solid var(--hair);}
.ratio-table td{padding:10px;border-bottom:1px dashed var(--hair);color:var(--paper);}
.ratio-table tr:last-child td{border-bottom:none;}
.ratio-table td.ratio-cell{color:var(--brass-bright);}
.ratio-table td.ratio-cell.baseline{color:var(--paper-dim);}

/* Price history chart */
.chart-wrap{position:relative;}
.chart-svg{width:100%;height:180px;display:block;}
.chart-range{display:flex;gap:8px;margin-bottom:12px;}
.chart-meta{display:flex;justify-content:space-between;font-family:var(--mono);font-size:11px;color:var(--paper-dim);margin-top:6px;}
.chart-tooltip{position:absolute;pointer-events:none;background:var(--ink);border:1px solid var(--hair);
  border-radius:4px;padding:6px 9px;font-family:var(--mono);font-size:11px;color:var(--paper);
  transform:translate(-50%,-115%);white-space:nowrap;opacity:0;transition:opacity .1s;}
.chart-tooltip.visible{opacity:1;}
.chart-line{stroke:var(--brass-bright);}
.chart-area-start{stop-color:var(--brass);stop-opacity:.25;}
.chart-area-end{stop-color:var(--brass);stop-opacity:0;}
.chart-crosshair{stroke:var(--hair);stroke-width:1;}
.chart-dot{fill:var(--brass-bright);}