:root{--ink:#1b2430;--muted:#5c6674;--paper:#f3efe6;--card:#fffdf8;--line:#d9d1c3;--blue:#2b6ea3;--blue-dark:#1e4f78;--yellow:#e6c35c;--ok:#2f6f4e;--err:#a33b32;--shadow:0 18px 40px #1b243014;--sans:"Segoe UI", "PT Sans", system-ui, sans-serif;--mono:"Cascadia Code", "Consolas", ui-monospace, monospace}*{box-sizing:border-box}html,body,#root{min-height:100%}body{color:var(--ink);font:16px/1.5 var(--sans);background:radial-gradient(circle at top left, #2b6ea31f, transparent 28%), repeating-linear-gradient(0deg, transparent, transparent 27px, #2b6ea30a 28px), var(--paper);margin:0}h1,h2{letter-spacing:-.03em;margin:0 0 8px}h1{font-size:2rem}h2{font-size:1.15rem}button,input,textarea{font:inherit}button{cursor:pointer;background:var(--blue);color:#fff;border:0;border-radius:10px;padding:10px 16px}button:hover:not(:disabled){background:var(--blue-dark)}button:disabled{opacity:.55;cursor:not-allowed}button.ghost{color:var(--blue-dark);border:1px solid var(--line);background:0 0}button.ghost:hover:not(:disabled){background:#2b6ea314}.shell{width:min(920px,100% - 32px);margin:0 auto;padding:24px 0 64px}.login-shell{place-items:center;min-height:100svh;display:grid}.login-card,.work-card,.task,.topbar{background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow)}.login-card{border-radius:18px;width:min(460px,100%);padding:32px}.eyebrow{text-transform:uppercase;letter-spacing:.14em;color:var(--blue-dark);margin:0 0 8px;font-size:.75rem;font-weight:700}.lead,.muted{color:var(--muted)}.lead{margin:0 0 24px}form{gap:14px;display:grid}label{gap:6px;font-weight:600;display:grid}input,textarea{border:1px solid var(--line);width:100%;color:var(--ink);background:#fff;border-radius:10px;padding:10px 12px}textarea{font-family:var(--mono);resize:vertical}.topbar{border-radius:16px;justify-content:space-between;align-items:center;gap:16px;margin-bottom:28px;padding:16px 20px;display:flex}.work-grid{gap:16px;display:grid}.work-card{text-align:left;color:inherit;background:var(--card);border-radius:16px;gap:10px;padding:20px;display:grid}.work-card p{color:var(--muted);margin:0}.badge{color:#6d5720;background:#efe6cd;border-radius:999px;width:fit-content;padding:4px 10px;font-size:.8rem;font-weight:700}.badge.done{color:var(--ok);background:#d9eadf}.progress{gap:8px;font-size:.9rem;display:grid}.bar{background:#efe8da;border-radius:99px;height:8px;overflow:hidden}.bar i{background:linear-gradient(90deg, var(--blue), var(--yellow));height:100%;display:block}.work-head{justify-content:space-between;align-items:start;gap:16px;margin-bottom:24px;display:flex}.back{margin-bottom:18px}.timer{z-index:5;color:#f4efe6;font-family:var(--mono);font-variant-numeric:tabular-nums;text-align:center;box-shadow:var(--shadow);background:#1b2430;border-radius:12px;margin-bottom:18px;padding:12px 16px;font-size:1.15rem;position:sticky;top:12px}.timer.warn{background:#a33b32}.tasks{gap:18px;margin:0;padding:0;list-style:none;display:grid}.task{border-radius:16px;padding:20px}.statement{color:#f4efe6;white-space:pre-wrap;font-family:var(--mono);background:#1b2430;border-radius:12px;margin:0 0 16px;padding:14px;font-size:.92rem;overflow:auto}.actions{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-top:20px;display:flex}.actions div{gap:10px;display:flex}.error,.ok{margin:0}.error{color:var(--err)}.danger{background:var(--err)}.danger:hover:not(:disabled){background:#822f28}.check{align-items:center;gap:8px;font-weight:600;display:flex}.check input{width:auto}.section-title{margin:32px 0 12px}.answer-block{gap:8px;margin-top:12px;display:grid}.ok{color:var(--ok);font-weight:600}@media (width<=640px){h1{font-size:1.55rem}.topbar,.work-head,.actions{flex-direction:column;align-items:stretch}}