/* Layout: a receipt from the future. One form, one result panel, then plain explainers. */
[hidden]{display:none!important}
:root{
  --bg:#eef0f7; --surface:#ffffff; --fg:#141729; --muted:#5b6080; --line:#d8dbea;
  --accent:#3046ff; --accent-ink:#ffffff; --up:#0f8a55; --down:#d23c3c; --chip:#e4e7ff;
  --display:"Unbounded", "Arial Black", system-ui, sans-serif;
  --body:"Manrope", "Segoe UI", system-ui, sans-serif;
  --mono:"JetBrains Mono", ui-monospace, Menlo, monospace;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#0d0f1c; --surface:#161a2e; --fg:#e9ebf8; --muted:#9aa0c3; --line:#272c48;
  --accent:#7d8bff; --accent-ink:#0d0f1c; --up:#3ccf8e; --down:#ff6b6b; --chip:#232850; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0d0f1c; --surface:#161a2e; --fg:#e9ebf8; --muted:#9aa0c3; --line:#272c48;
  --accent:#7d8bff; --accent-ink:#0d0f1c; --up:#3ccf8e; --down:#ff6b6b; --chip:#232850; color-scheme:dark}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 var(--body)}
.wrap{max-width:1100px;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
a{color:var(--accent)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.top{border-bottom:1px solid var(--line);background:var(--surface)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-block:14px;flex-wrap:wrap}
.brand{font:800 20px/1 var(--display);color:var(--fg);text-decoration:none;letter-spacing:-.01em}
.brand span{color:var(--accent);margin-left:4px}
.tabs{display:flex;gap:4px;background:var(--bg);padding:4px;border-radius:999px;border:1px solid var(--line)}
.tabs a{font-weight:700;font-size:14px;padding:6px 16px;border-radius:999px;color:var(--muted);text-decoration:none}
.tabs a[aria-selected="true"]{background:var(--accent);color:var(--accent-ink)}
.hero{padding-block:44px 24px;display:grid;gap:12px}
h1{font:800 clamp(28px,4.6vw,50px)/1.08 var(--display);margin:0;max-width:20ch;text-wrap:balance;letter-spacing:-.02em}
.lede{margin:0;color:var(--muted);font-size:18px;max-width:60ch}
.calc{display:grid;grid-template-columns:minmax(0,340px) minmax(0,1fr);gap:20px;align-items:start;padding-bottom:40px}
@media (max-width:820px){.calc{grid-template-columns:1fr}}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:22px}
form{display:grid;gap:16px}
.field{display:grid;gap:6px}
label{font-weight:700;font-size:14px}
input,select{font:600 16px var(--body);color:var(--fg);background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:11px 12px;width:100%;min-width:0}
.hint{color:var(--muted);font-size:13px}
.presets{display:flex;flex-wrap:wrap;gap:8px}
.presets button{font:600 13px var(--body);background:var(--chip);color:var(--fg);border:0;border-radius:999px;padding:6px 12px;cursor:pointer}
.go{font:700 16px var(--body);background:var(--accent);color:var(--accent-ink);border:0;border-radius:10px;padding:13px;cursor:pointer}
.go:hover{filter:brightness(1.08)}
.result{min-height:420px;display:grid;align-content:start;min-width:0}
.status{color:var(--muted);margin:0}
.status.err{color:var(--down)}
#out{display:grid;gap:10px;min-width:0}
.say{margin:0;font-size:17px;color:var(--muted)}
.say b{color:var(--fg)}
.big{margin:0;font:800 clamp(40px,7vw,72px)/1 var(--display);letter-spacing:-.03em;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}
.delta{margin:0;font:600 18px var(--mono);font-variant-numeric:tabular-nums}
.delta.up{color:var(--up)} .delta.down{color:var(--down)}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:10px;overflow:hidden;margin:8px 0 0}
.stats div{background:var(--surface);padding:12px 14px;display:grid;gap:2px}
.stats dt{font-size:12px;color:var(--muted);font-weight:600}
.stats dd{margin:0;font:500 16px var(--mono);font-variant-numeric:tabular-nums;overflow-wrap:anywhere}
.chart-box{margin-top:8px;display:grid;gap:8px}
canvas{width:100%;max-width:100%;display:block}
.legend{display:flex;flex-wrap:wrap;gap:16px;font-size:13px;color:var(--muted)}
.legend i{display:inline-block;width:14px;height:3px;border-radius:2px;vertical-align:middle;margin-right:6px}
.share{display:flex;flex-wrap:wrap;gap:10px;margin-top:6px}
.share .x,.share button{font:700 15px var(--body);border-radius:10px;padding:11px 16px;cursor:pointer;text-decoration:none}
.share .x{background:var(--fg);color:var(--bg)}
.share button{background:transparent;color:var(--fg);border:1px solid var(--line)}
.explain{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;padding-block:36px;border-top:1px solid var(--line)}
@media (max-width:820px){.explain{grid-template-columns:1fr}}
.explain h2{font:600 18px/1.3 var(--display);margin:0 0 8px}
.explain p{margin:0 0 10px;color:var(--muted);font-size:15px}
.explain strong{color:var(--fg)}
.foot{border-top:1px solid var(--line);padding-block:24px;color:var(--muted);font-size:13px}
.foot nav{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:6px}
.foot a{color:var(--muted)}
.post-page{padding-block:40px;display:grid;gap:14px;max-width:70ch}
.post-page h1{max-width:none}
.post-page h2{font:600 20px var(--display);margin:12px 0 0}
.post-page p{margin:0}
.brief-home{padding-block:8px 36px;display:grid;gap:14px}
.brief-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:8px}
.brief-head h2,.board-wrap h2{font:800 24px var(--display);margin:0}
.brief-head a{font-weight:700;text-decoration:none}
.post-list{display:grid;gap:0}
.post-item{display:grid;gap:4px;padding-block:16px;border-top:1px solid var(--line)}
.post-item:first-child{border-top:0;padding-top:0}
.post-item time,.post time{font:500 12px var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--accent)}
.post-item h3{margin:0;font-size:19px}
.post-item h3 a{color:var(--fg);text-decoration:none}
.post-item h3 a:hover{text-decoration:underline}
.post-item p{margin:0;color:var(--muted);font-size:15px}
.crumbs{font-size:14px;color:var(--muted)}
.post{display:grid;gap:14px;max-width:70ch}
.post h1{font:800 clamp(28px,4.4vw,42px)/1.1 var(--display);margin:0;letter-spacing:-.01em;text-wrap:balance}
.post h2{font:600 20px var(--display);margin:10px 0 0}
.post p,.post li{margin:0}
.post ul,.post ol{margin:0;padding-left:22px;display:grid;gap:6px}
.back a{font-weight:700}
.board-wrap{display:grid;gap:12px;padding-block:32px 8px}
.board-scroll{overflow-x:auto;background:var(--surface);border:1px solid var(--line);border-radius:12px}
.board{border-collapse:collapse;width:100%;min-width:560px;font-size:15px}
.board th,.board td{padding:11px 14px;border-bottom:1px solid var(--line);text-align:right;white-space:nowrap}
.board th:first-child,.board td:first-child{text-align:left}
.board th{font:600 12px var(--body);color:var(--muted);text-transform:uppercase;letter-spacing:.06em}
.board td{font-family:var(--mono);font-variant-numeric:tabular-nums}
.board td:first-child{font-family:var(--body);font-weight:700}
.board tr:last-child td{border-bottom:0}
.board .up{color:var(--up)} .board .down{color:var(--down)}
.board-note{color:var(--muted);font-size:13px;margin:0}