:root{--ink:#1d2433;--muted:#5d6678;--line:#e3e7ef;--bg:#f6f7fb;--card:#fff;--brand:#3949ab;--brand2:#5c6bc0;--ok:#1b8a4a;--okbg:#e8f6ee;--bad:#c62828;--badbg:#fdecec;--warn:#9a6700;--warnbg:#fff6dd;--r:14px}
*{box-sizing:border-box}html,body{margin:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.5;-webkit-font-smoothing:antialiased}
.top{position:sticky;top:0;z-index:5;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 18px;background:#fff;border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px;font-weight:700}.brand em{font-weight:500;color:var(--muted);font-style:normal}
.logo{display:inline-grid;place-items:center;width:32px;height:32px;border-radius:9px;background:var(--brand);color:#fff;font-size:18px}
.tabs{display:flex;gap:4px;background:var(--bg);padding:4px;border-radius:10px}
.tab{border:0;background:transparent;padding:7px 12px;border-radius:8px;font:inherit;font-size:14px;color:var(--muted);cursor:pointer}
.tab.active{background:#fff;color:var(--ink);box-shadow:0 1px 2px rgba(0,0,0,.08)}
main{max-width:780px;margin:0 auto;padding:20px 16px 40px}
.foot{max-width:780px;margin:0 auto;padding:0 16px 30px;color:var(--muted);font-size:12px;text-align:center}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px;margin:0 0 16px;box-shadow:0 1px 2px rgba(20,30,60,.04)}
h1{font-size:26px;margin:4px 0 6px}h2{font-size:18px;margin:0 0 10px}h3{font-size:15px;margin:14px 0 6px}
.sub{color:var(--muted);margin:0 0 14px}
.seg{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.opt{border:1.5px solid var(--line);background:#fff;border-radius:12px;padding:12px 14px;text-align:left;font:inherit;cursor:pointer;color:var(--ink)}
.opt:hover{border-color:var(--brand2)}.opt.sel{border-color:var(--brand);background:#eef0fb;box-shadow:inset 0 0 0 1px var(--brand)}
.opt b{display:block}.opt small{color:var(--muted)}
.kinds{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
@media (max-width:620px){.kinds{grid-template-columns:1fr}h1{font-size:22px}}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.chip{border:1.5px solid var(--line);background:#fff;border-radius:999px;padding:6px 12px;font:inherit;font-size:14px;cursor:pointer}
.chip.sel{border-color:var(--brand);background:#eef0fb}
.btn{display:inline-flex;align-items:center;gap:8px;border:0;background:var(--brand);color:#fff;font:inherit;font-weight:600;padding:11px 18px;border-radius:11px;cursor:pointer}
.btn:hover{background:#2f3d99}.btn.ghost{background:#fff;color:var(--brand);border:1.5px solid var(--line)}.btn.small{padding:7px 12px;font-size:14px}
.btn:disabled{opacity:.5;cursor:not-allowed}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.spread{justify-content:space-between}
.hint{font-size:13px;color:var(--muted)}
.bar{height:8px;background:var(--line);border-radius:99px;overflow:hidden}.bar>span{display:block;height:100%;background:var(--brand);border-radius:99px;transition:width .3s}
.qhead{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:8px;font-size:14px;color:var(--muted)}
.timer{font-variant-numeric:tabular-nums;font-weight:600;color:var(--ink)}.timer.low{color:var(--bad)}
.meta{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:12px}
.pill{display:inline-flex;align-items:center;gap:6px;font-size:13px;padding:3px 10px;border-radius:999px;background:var(--bg);border:1px solid var(--line)}
.pill svg{width:16px;height:16px}
.topic{font-size:12px;color:var(--muted);margin-left:auto}
.stem{font-size:18px;line-height:1.6;margin:4px 0 16px}
.fr{display:inline-flex;flex-direction:column;vertical-align:middle;text-align:center;font-size:.86em;line-height:1.1;margin:0 2px}.fr>span:first-child{border-bottom:1.2px solid currentColor;padding:0 2px}
.vec{display:inline-flex;flex-direction:column;vertical-align:middle;text-align:center;line-height:1.15;padding:0 5px;border-left:1.5px solid;border-right:1.5px solid;border-radius:6px;font-size:.92em}
.field{margin:10px 0}.field label{display:block;font-size:14px;font-weight:600;margin-bottom:4px}
.field input[type=text],.field textarea{width:100%;font:inherit;font-size:17px;padding:10px 12px;border:1.5px solid var(--line);border-radius:10px;background:#fff;color:var(--ink)}
.field input:focus,.field textarea:focus{outline:0;border-color:var(--brand);box-shadow:0 0 0 3px rgba(57,73,171,.15)}
.pairin{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.choice{display:grid;gap:6px}.choice label{display:flex;gap:10px;align-items:center;font-weight:500;border:1.5px solid var(--line);border-radius:10px;padding:9px 12px;cursor:pointer}
.choice input{accent-color:var(--brand)}
.keys{display:flex;flex-wrap:wrap;gap:8px;margin:6px 0 14px}.key{min-width:44px;min-height:44px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);background:#fff;border-radius:10px;padding:6px 10px;font:inherit;font-size:16px;cursor:pointer}
.fb{border-radius:12px;padding:12px 14px;margin:12px 0}.fb.fb-ok{background:var(--okbg)}.fb.fb-bad{background:var(--badbg)}.fb.fb-part{background:var(--warnbg)}
.fbline{display:flex;gap:8px;margin:4px 0;font-size:15px}.tick{font-weight:700;width:18px}.tick.ok{color:var(--ok)}.tick.bad{color:var(--bad)}
.note{color:var(--warn);font-size:13px}
details.work{margin-top:10px}details.work summary{cursor:pointer;color:var(--brand);font-weight:600}
details.work ol{margin:8px 0 0 0;padding-left:22px}
.selfbox{background:var(--bg);border-radius:10px;padding:10px 12px;margin-top:8px}
.big{font-size:40px;font-weight:800;line-height:1}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}@media (max-width:620px){.stats{grid-template-columns:repeat(2,1fr)}}
.stat{background:var(--bg);border-radius:12px;padding:12px}.stat b{display:block;font-size:22px}.stat span{font-size:13px;color:var(--muted)}
.arow{display:grid;grid-template-columns:110px 1fr 60px;gap:10px;align-items:center;margin:6px 0;font-size:14px}
.grade{border:1.5px dashed var(--brand2);border-radius:12px;padding:12px 14px;background:#f4f5fd}
.grade .lbl{font-size:12px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--brand)}
.review{border-top:1px solid var(--line);padding:10px 0}
.email{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.email .hdr{background:var(--bg);padding:12px 16px;font-size:14px;border-bottom:1px solid var(--line)}
.email .body{padding:18px}.email .body p{margin:8px 0}
.muted{color:var(--muted)}.ok{color:var(--ok)}.bad{color:var(--bad)}
.banner{background:var(--warnbg);border-radius:10px;padding:10px 12px;font-size:14px;margin-bottom:12px}

.dia{margin:10px 0 4px;padding:6px;background:#fff;border:1px solid #e5e7eb;border-radius:10px;display:inline-block;max-width:100%;overflow-x:auto}
.dia svg{display:block;max-width:100%;height:auto}