:root{
  --ink:#15213b;--mut:#5b6b85;--bg:#eef2f7;--card:#fff;--line:#d6dee9;
  --timo:#1d4ed8;--hk:#d6283d;--ok:#157347;--bad:#b42318;--mid:#b7791f;
  --accent:var(--timo);--r:14px;
}
body[data-comp=hkimo]{--accent:var(--hk)}
body[data-comp=timo]{--accent:var(--timo)}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:'Lexend',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;background:var(--bg);color:var(--ink);line-height:1.55;font-size:16px}
h1{font-size:1.6rem;line-height:1.25;margin:0 0 .75rem;font-weight:700}
h2{font-size:1.15rem;margin:0 0 .75rem;font-weight:700}
p{margin:.25rem 0 .75rem}
a{color:var(--accent)}
hr{border:0;border-top:1px solid var(--line);margin:1rem 0}
.mut{color:var(--mut)}.small{font-size:.85rem}.err{color:var(--bad);min-height:1.2em;font-weight:500}.ok{color:var(--ok)}
.wrap{max-width:760px;margin:0 auto;padding:1.25rem 1rem 3rem}
.wrap.wide{max-width:1180px}
.wrap.center{min-height:100vh;display:flex;align-items:center;justify-content:center}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:1.25rem;margin:0 0 1rem}
.card.narrow{width:100%;max-width:420px}
.top{display:flex;align-items:center;justify-content:space-between;gap:1rem;background:var(--ink);color:#fff;padding:.7rem 1rem;position:sticky;top:0;z-index:5}
.top .brand{font-weight:700}
.top .who{display:flex;align-items:center;gap:.9rem;font-size:.9rem}
.link{background:none;border:0;color:inherit;font:inherit;text-decoration:underline;cursor:pointer;padding:0}
.top .tabs{display:flex;gap:.25rem;flex-wrap:wrap}
.top .tabs button{background:transparent;color:#cfd8ea;border:0;font:inherit;padding:.35rem .7rem;border-radius:8px;cursor:pointer}
.top .tabs button.on{background:#fff;color:var(--ink);font-weight:500}
.lab{display:block;margin:0 0 .85rem}
.lab>span{display:block;font-size:.88rem;color:var(--mut);margin-bottom:.25rem}
input,select,textarea{width:100%;font:inherit;color:inherit;background:#fff;border:1.5px solid var(--line);border-radius:10px;padding:.6rem .75rem}
textarea{min-height:90px;resize:vertical}
input[type=checkbox]{width:auto;accent-color:var(--accent)}
input:focus,select:focus,textarea:focus,button:focus-visible,a:focus-visible{outline:3px solid color-mix(in srgb,var(--accent) 40%,transparent);outline-offset:1px;border-color:var(--accent)}
.btn{display:inline-block;font:inherit;font-weight:500;background:var(--accent);color:#fff;border:0;border-radius:10px;padding:.65rem 1.1rem;cursor:pointer;text-decoration:none}
.btn.sec{background:#fff;color:var(--ink);border:1.5px solid var(--line)}
.btn.danger{background:var(--bad)}
.btn.sm{padding:.35rem .75rem;font-size:.88rem}
.btn[disabled]{opacity:.5;cursor:not-allowed}
.row{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.6rem 0;border-top:1px solid var(--line)}
.row:first-of-type{border-top:0}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-bottom:1rem}
.panel{border:0;border-radius:var(--r);padding:1.6rem 1.25rem;text-align:left;color:#fff;cursor:pointer;font:inherit;display:flex;flex-direction:column;gap:.35rem;min-height:150px;justify-content:flex-end}
.panel strong{font-size:2rem;line-height:1.1;letter-spacing:.01em}
.panel span{font-size:.85rem;opacity:.9}
.panel.timo{background:var(--timo)}.panel.hkimo{background:var(--hk)}
.choice{display:block;width:100%;text-align:left;background:#fff;border:1.5px solid var(--line);border-radius:12px;padding:1rem 1.1rem;margin:0 0 .6rem;font:inherit;color:inherit;cursor:pointer}
.choice:hover:not([disabled]){border-color:var(--accent)}
.choice[disabled]{opacity:.5;cursor:not-allowed}
.choice b{display:block}.choice span{color:var(--mut);font-size:.88rem}
.back{margin-bottom:.75rem}
.q .badge{display:inline-block;font-size:.8rem;background:color-mix(in srgb,var(--accent) 12%,#fff);color:var(--accent);border-radius:999px;padding:.15rem .7rem;margin-bottom:.6rem}
.q .text{font-size:1.15rem;white-space:pre-wrap;margin:.25rem 0 1rem}
.q img,.rev img{max-width:100%;height:auto;display:block;margin:.5rem 0 1rem;border-radius:8px;border:1px solid var(--line)}
.ans{font-size:1.2rem;padding:.8rem 1rem}
.rail{display:flex;flex-wrap:wrap;gap:.35rem;margin-bottom:1rem}
.rail button{width:2.2rem;height:2.2rem;border-radius:8px;border:1.5px solid var(--line);background:#fff;font:inherit;font-size:.85rem;cursor:pointer;color:var(--ink)}
.rail button.done{background:color-mix(in srgb,var(--accent) 14%,#fff);border-color:var(--accent)}
.rail button.cur{background:var(--accent);color:#fff;border-color:var(--accent)}
.nav{display:flex;justify-content:space-between;gap:.5rem}
.timer{font-variant-numeric:tabular-nums;font-weight:700;font-size:1.1rem}
.timer.low{color:#ffb4ab}
.score{font-size:2.6rem;font-weight:700;line-height:1.1;margin:.25rem 0}
.bars{display:grid;gap:.6rem}
.bar-row{display:grid;grid-template-columns:150px 1fr 110px;gap:.6rem;align-items:center;font-size:.9rem}
.bar{height:10px;background:#e6ecf4;border-radius:99px;overflow:hidden}
.bar i{display:block;height:100%;background:var(--mut);border-radius:99px}
.bar i.hi{background:var(--ok)}.bar i.mid{background:var(--mid)}.bar i.lo{background:var(--bad)}
.bar-v{color:var(--mut);text-align:right}
.rev{border-top:1px solid var(--line);padding:.9rem 0}
.rev .st{font-weight:700}.rev .st.y{color:var(--ok)}.rev .st.n{color:var(--bad)}
.rev .text{white-space:pre-wrap;margin:.3rem 0}
.rev .exp{background:#f4f7fb;border-radius:8px;padding:.5rem .75rem;margin-top:.4rem;font-size:.92rem;white-space:pre-wrap}
.tbl{width:100%;border-collapse:collapse;font-size:.9rem}
.tbl th,.tbl td{text-align:left;padding:.5rem .6rem;border-bottom:1px solid var(--line);vertical-align:top}
.tbl th{font-weight:500;color:var(--mut);white-space:nowrap}
.tbl td.num{text-align:center;font-variant-numeric:tabular-nums}
.tbl .hi{color:var(--ok);font-weight:700}.tbl .mid{color:var(--mid);font-weight:700}.tbl .lo{color:var(--bad);font-weight:700}
.scroll{overflow-x:auto}
.bar-actions{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:1rem;align-items:end}
.bar-actions .lab{margin:0;min-width:150px;flex:1}
.pill{display:inline-block;border-radius:999px;padding:.05rem .6rem;font-size:.8rem;background:#e6ecf4}
.pill.on{background:#d6f0e0;color:var(--ok)}.pill.off{background:#fde4e1;color:var(--bad)}
.tok{font-family:ui-monospace,Menlo,Consolas,monospace;font-weight:700;letter-spacing:.08em;font-size:1.05rem}
.ov{position:fixed;inset:0;background:rgba(21,33,59,.55);display:flex;align-items:flex-start;justify-content:center;padding:2rem 1rem;overflow:auto;z-index:20}
.modal{background:#fff;border-radius:var(--r);width:100%;max-width:640px;padding:1.25rem}
.modal .hd{display:flex;justify-content:space-between;align-items:center;margin-bottom:.75rem}
.modal .ft{display:flex;gap:.5rem;justify-content:flex-end;margin-top:.5rem}
.toast{position:fixed;left:50%;bottom:1.25rem;transform:translateX(-50%);background:var(--ink);color:#fff;padding:.6rem 1rem;border-radius:10px;z-index:30;max-width:90%}
@media (max-width:620px){
  .grid2{grid-template-columns:1fr}
  .bar-row{grid-template-columns:1fr;gap:.2rem}.bar-v{text-align:left}
  .top{flex-wrap:wrap}
}
@media (prefers-reduced-motion:no-preference){.panel{transition:transform .12s}.panel:hover{transform:translateY(-2px)}}

.gradegrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:.6rem}
.gradegrid .choice{margin:0}
.choice.sel{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 8%,#fff)}