:root{--bg:#0b0b0e;--bg2:#14141a;--card:#1a1a22;--ink:#f3ecd9;--mute:#b9b09a;--gold:#d6a844;--gold2:#f2d27a;--warm:#e0734a;--ok:#5fbf8a;--bad:#e0605a;--line:#2d2b24;--shadow:0 8px 30px rgba(0,0,0,.45)}
:root[data-theme=light]{--bg:#faf6ea;--bg2:#f0e9d4;--card:#fffdf6;--ink:#1c1a14;--mute:#5d5644;--gold:#9c6f12;--gold2:#7d5709;--warm:#c0502a;--ok:#2c8a57;--bad:#b3362f;--line:#ddd3b6;--shadow:0 8px 24px rgba(80,60,10,.15)}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:'Be Vietnam Pro',system-ui,sans-serif;line-height:1.65;font-size:16px;-webkit-text-size-adjust:100%}
h1,h2,h3{font-family:'Fraunces',Georgia,serif;line-height:1.2;margin:.2em 0 .5em}
h1{font-size:clamp(1.7rem,6vw,2.8rem)}h2{font-size:clamp(1.3rem,4.5vw,1.9rem)}h3{font-size:1.15rem}
.mono{font-family:'Space Mono',ui-monospace,monospace}
a{color:var(--gold2)}
.wrap{max-width:980px;margin:0 auto;padding:0 16px}
header{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;gap:10px;padding:10px 16px;max-width:980px;margin:0 auto}
.logo{width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg,var(--gold),var(--gold2));color:#14110a;display:grid;place-items:center;font-family:'Space Mono',monospace;font-weight:700;font-size:.8rem;cursor:pointer;user-select:none;-webkit-tap-highlight-color:transparent;flex:none}
.brand{flex:1;min-width:0}
.brand b{display:block;font-family:'Fraunces',serif;font-size:.98rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand small{color:var(--mute);font-size:.72rem}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid var(--gold);background:transparent;color:var(--gold2);padding:9px 14px;border-radius:10px;font:inherit;font-weight:600;font-size:.9rem;cursor:pointer;text-decoration:none;min-height:44px}
.btn:hover{background:rgba(214,168,68,.12)}
.btn.pri{background:linear-gradient(135deg,var(--gold),var(--gold2));color:#14110a;border-color:transparent}
.btn.sm{padding:6px 10px;min-height:36px;font-size:.8rem}
nav{display:flex;gap:6px;overflow-x:auto;padding:0 16px 10px;max-width:980px;margin:0 auto;scrollbar-width:none}
nav::-webkit-scrollbar{display:none}
nav button{flex:none;border:1px solid var(--line);background:var(--card);color:var(--ink);padding:8px 12px;border-radius:999px;font:inherit;font-size:.85rem;cursor:pointer;min-height:40px}
nav button.on{background:var(--gold);color:#14110a;border-color:var(--gold);font-weight:700}
main{padding:20px 0 60px}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px;margin:14px 0;box-shadow:var(--shadow)}
.hero{text-align:center;padding:26px 8px 10px}
.hero .num{font-family:'Space Mono',monospace;color:var(--gold);letter-spacing:.2em;font-size:.85rem}
.gold{color:var(--gold2)}
.grid{display:grid;gap:12px}
.g2{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.tag{display:inline-block;font-family:'Space Mono',monospace;font-size:.72rem;background:rgba(214,168,68,.15);color:var(--gold2);border:1px solid var(--gold);padding:2px 8px;border-radius:999px;margin-bottom:6px}
.felt{border-left:4px solid var(--warm);padding:10px 14px;margin:10px 0;background:rgba(224,115,74,.08);border-radius:0 12px 12px 0}
.felt .line{font-family:'Fraunces',serif;font-size:1.15rem;color:var(--gold2)}
.lock{opacity:.55}
.pill{display:inline-block;padding:2px 10px;border-radius:999px;font-size:.75rem;border:1px solid var(--line)}
.pill.free{color:var(--ok);border-color:var(--ok)}.pill.lk{color:var(--warm);border-color:var(--warm)}
table{width:100%;border-collapse:collapse;font-size:.88rem}
th,td{border:1px solid var(--line);padding:8px;text-align:left;vertical-align:top}
th{background:var(--bg2);color:var(--gold2)}
.tw{overflow-x:auto}
input,select,textarea{width:100%;background:var(--bg2);color:var(--ink);border:1px solid var(--line);border-radius:10px;padding:10px;font:inherit;min-height:44px}
label{display:block;font-size:.85rem;color:var(--mute);margin:10px 0 4px}
.row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.opt{display:block;width:100%;text-align:left;margin:6px 0;padding:12px;border-radius:10px;border:1px solid var(--line);background:var(--bg2);color:var(--ink);font:inherit;cursor:pointer;min-height:44px}
.opt.sel{border-color:var(--gold);background:rgba(214,168,68,.15)}
.opt.right{border-color:var(--ok);background:rgba(95,191,138,.15)}
.opt.wrong{border-color:var(--bad);background:rgba(224,96,90,.15)}
.bigtimer{font-family:'Space Mono',monospace;font-size:3rem;text-align:center;color:var(--gold2)}
.prog{height:12px;background:var(--bg2);border-radius:99px;overflow:hidden;border:1px solid var(--line)}
.prog i{display:block;height:100%;background:linear-gradient(90deg,var(--gold),var(--warm))}
.rung{display:inline-block;min-width:92px}
.diploma{border:6px double var(--gold);padding:28px 18px;text-align:center;background:var(--card);border-radius:8px}
.diploma h1{color:var(--gold2)}
.chartgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(110px,1fr));gap:10px}
.chartcell{border:2px dashed var(--gold);border-radius:14px;text-align:center;padding:12px 6px}
.chartcell .ic{font-size:2.4rem}
.toast{position:fixed;left:50%;bottom:20px;transform:translateX(-50%);background:var(--gold);color:#14110a;padding:10px 16px;border-radius:12px;font-weight:700;z-index:50;max-width:90vw;text-align:center}
.copyf{display:flex;gap:8px;align-items:flex-start;margin:6px 0}
.copyf code{flex:1;word-break:break-word;background:var(--bg2);padding:8px;border-radius:8px;font-size:.78rem;border:1px solid var(--line)}
footer{border-top:1px solid var(--line);padding:22px 16px;text-align:center;color:var(--mute);font-size:.85rem}
.q{font-family:'Fraunces',serif;font-size:1.1rem;font-style:italic;border-left:3px solid var(--gold);padding-left:12px;margin:10px 0}
svg text{font-family:'Be Vietnam Pro',sans-serif}
@media(max-width:640px){
  table.stack,table.stack tbody,table.stack tr,table.stack td{display:block;width:100%}
  table.stack tr.hd{display:none}
  table.stack tr{border:1px solid var(--line);border-radius:12px;margin:10px 0;padding:6px;background:var(--bg2)}
  table.stack td{border:0;padding:6px 8px}
  table.stack td::before{content:attr(data-label);display:block;font-family:'Space Mono',monospace;font-size:.7rem;color:var(--gold2);text-transform:uppercase;letter-spacing:.06em}
}
@media print{
  body *{visibility:hidden}
  #printArea,#printArea *{visibility:visible}
  #printArea{position:absolute;left:0;top:0;width:100%;color:#000;background:#fff}
  #printArea .card,#printArea .diploma{box-shadow:none;background:#fff;color:#000;border-color:#000}
  #printArea .gold,#printArea h1,#printArea h2{color:#000}
}