h1{letter-spacing:-.02em;margin:0;font-size:34px;font-weight:700;line-height:1.15}h2{margin:0;font-size:17px;font-weight:600}.muted{color:var(--muted)}.hint{color:var(--muted);margin:0;font-size:13px}.hint.center{text-align:center}.error{color:var(--error);margin:0}.notice{border:1px solid var(--warn-line);border-radius:var(--radius-md);background:var(--warn-soft);color:var(--warn-text);margin:0;padding:12px 16px}.screen{flex-direction:column;min-height:100vh;display:flex}.site-header{justify-content:space-between;align-items:center;gap:16px;padding:20px 32px;display:flex}.brand{align-items:center;gap:10px;display:flex}.brand-name{font-size:15px;font-weight:600}.center{flex:1;justify-content:center;align-items:center;padding:32px 16px 80px;display:flex}.page{box-sizing:border-box;flex-direction:column;gap:28px;width:100%;max-width:1040px;margin:0 auto;padding:16px 24px 64px;display:flex}.lead{flex-direction:column;gap:8px;display:flex}.lead p{margin:0;font-size:16px;line-height:1.55}.card{border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--surface)}button{border:1px solid var(--line-strong);border-radius:var(--radius-md);background:var(--surface);min-height:46px;color:var(--ink);font:inherit;cursor:pointer;justify-content:center;align-items:center;padding:0 20px;font-size:15px;font-weight:500;display:inline-flex}button:hover:not(:disabled){background:var(--surface-2)}button.primary{border-color:var(--accent);background:var(--accent);color:#fff;font-weight:600}button.primary:hover:not(:disabled){border-color:var(--accent-hover);background:var(--accent-hover)}button:disabled{border-color:var(--line);background:var(--line);color:var(--muted);cursor:not-allowed}button.block{width:100%;min-height:52px;font-size:16px}.narrow-notice{display:none}@media (width<=1023px){.narrow-notice{text-align:center;max-width:30rem;margin:4rem auto;padding:0 1.5rem;font-size:18px;display:block}.app{display:none}}.login-panel{flex-direction:column;gap:24px;width:100%;max-width:440px;display:flex}.login{box-shadow:var(--shadow-card);flex-direction:column;gap:20px;padding:28px;display:flex}.field{flex-direction:column;gap:8px;display:flex}.field label{font-size:14px;font-weight:600}.code-input{box-sizing:border-box;border:1.5px solid var(--line-strong);border-radius:var(--radius-md);background:var(--surface);height:64px;color:var(--ink);font-family:var(--font-mono);letter-spacing:.18em;text-align:center;text-transform:uppercase;padding:0 20px;font-size:30px;font-weight:500}.code-input:focus{border-color:var(--accent)}.code-input::placeholder{color:#c3c8d0}.turnstile{min-height:65px}.side-note{color:var(--muted);align-items:flex-start;gap:12px;margin:0;padding:0 4px;font-size:14px;line-height:1.5;display:flex}.side-note svg{flex:none;margin-top:2px}.intro-layout{flex-wrap:wrap;align-items:flex-start;gap:24px;display:flex}.intro-main{flex-direction:column;flex:999 520px;gap:16px;min-width:0;display:flex}.stats{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:0;display:grid}.stat{border:1px solid var(--line);background:var(--surface);border-radius:14px;flex-direction:column;gap:4px;padding:18px 20px;display:flex}.stat dt{color:var(--muted);font-size:13px}.stat dd{letter-spacing:-.02em;margin:0;font-size:24px;font-weight:700}.intro-main .card{padding:8px 24px 16px}.intro-main h2{margin:16px 0 4px}.steps{counter-reset:step;margin:0;padding:0;list-style:none}.steps li{border-bottom:1px solid var(--line-soft);counter-increment:step;flex-direction:column;gap:2px;padding:14px 0 14px 44px;display:flex;position:relative}.steps li:before{content:counter(step);background:var(--accent-soft);width:28px;height:28px;color:var(--accent);text-align:center;border-radius:50%;font-size:14px;font-weight:600;line-height:28px;position:absolute;top:14px;left:0}.steps strong{font-size:15px;font-weight:600}.steps span{color:var(--muted);font-size:14px;line-height:1.5}.limits{padding:14px 0 0}.limits summary{cursor:pointer;font-size:14px;font-weight:600}.time-limits{grid-template-columns:repeat(auto-fill,minmax(7rem,1fr));gap:4px 16px;margin:12px 0 0;padding-left:1.5rem;font-size:14px;display:grid}.start-panel{flex-direction:column;flex:300px;gap:16px;min-width:0;padding:24px;display:flex}.ai-note{border:1px solid var(--ai-line);border-radius:var(--radius);background:var(--ai-tint);color:var(--ai-text);margin:0;padding:12px 14px;font-size:13px;line-height:1.5}.consent{cursor:pointer;align-items:flex-start;gap:12px;font-size:14px;line-height:1.5;display:flex}.consent input{width:20px;height:20px;accent-color:var(--accent);flex:none;margin:1px 0 0}.privacy-link{margin:0;font-size:14px}.done-panel{text-align:center;flex-direction:column;align-items:center;gap:16px;max-width:520px;display:flex}.done-panel p{margin:0;font-size:16px;line-height:1.55}.done-mark{background:var(--ok-soft);width:72px;height:72px;color:var(--ok);border-radius:50%;justify-content:center;align-items:center;margin-bottom:8px;display:flex}.question-page{min-height:100vh}.question-content{flex-direction:column;min-height:100vh;display:flex}.question-bar{z-index:1;border-bottom:1px solid var(--line);background:var(--surface);position:sticky;top:0}.bar-inner{flex-wrap:wrap;align-items:center;gap:12px 24px;max-width:1180px;margin:0 auto;padding:14px 24px 0;display:flex}.progress{white-space:nowrap;margin:0;font-size:14px}.progress strong{font-size:20px;font-weight:700}.progress-steps{flex:200px;gap:4px;margin:0;padding:0;list-style:none;display:flex}.progress-steps li{background:var(--line);border-radius:3px;flex:1;height:6px}.progress-steps li.done{background:var(--accent)}.progress-steps li.current{background:var(--accent-ring)}.timers{gap:8px;display:flex}.timer{border-radius:var(--radius);background:var(--surface-2);height:40px;color:var(--ink-2);align-items:center;gap:8px;padding:0 14px;display:inline-flex}.timer.urgent{background:var(--warn-soft);color:var(--warn-text)}.timer-label{font-size:13px}.timer-value{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:17px;font-weight:600}.time-bar{background:var(--surface-2);appearance:none;border:0;flex:1 0 100%;height:3px;margin:0 -24px}.time-bar::-webkit-progress-bar{background:var(--surface-2)}.time-bar::-webkit-progress-value{background:var(--accent)}.time-bar::-moz-progress-bar{background:var(--accent)}.time-bar.urgent::-webkit-progress-value{background:var(--warn)}.time-bar.urgent::-moz-progress-bar{background:var(--warn)}.question-main{box-sizing:border-box;flex-direction:column;flex:1;gap:24px;width:100%;max-width:1180px;margin:0 auto;padding:32px 24px;display:flex}.question-main.split{flex-flow:wrap;align-items:flex-start}.question-body{flex-direction:column;align-items:flex-start;gap:16px;min-width:0;display:flex}.question-main.split .question-body{flex:999 560px}.question-answer{min-width:0}.question-main.split .question-answer{flex:360px}.question-body>*{max-width:100%}.question-body .code-block{align-self:stretch}.type-chip{background:var(--accent-soft);color:var(--accent-text);border-radius:999px;padding:4px 10px;font-size:12px;font-weight:600}.question-body .markdown{font-size:16px;line-height:1.6}.question-body .markdown>:first-child{letter-spacing:-.01em;margin-top:0;font-size:22px;font-weight:600;line-height:1.4}.question-body .markdown>:last-child{margin-bottom:0}.no-select,.code-block{-webkit-user-select:none;user-select:none}.markdown code{background:var(--surface-2);font-family:var(--font-mono);border-radius:5px;padding:1px 5px;font-size:.9em}.markdown pre{border-radius:var(--radius-md);background:var(--code-bg);color:var(--code-text);padding:14px 16px;overflow-x:auto}.markdown pre code{background:0 0;padding:0}.answer-options{border:0;flex-direction:column;gap:10px;margin:0;padding:0;display:flex}.answer-options legend{color:var(--muted);margin-bottom:10px;padding:0;font-size:14px}.answer-option{box-sizing:border-box;border:1px solid var(--line);background:var(--surface);cursor:pointer;border-radius:14px;align-items:center;gap:14px;min-height:60px;padding:10px 16px;display:flex;position:relative}.answer-option:hover{border-color:var(--line-strong)}.answer-option input{opacity:0;pointer-events:none;position:absolute}.answer-option:has(input:focus-visible){outline:3px solid var(--accent-ring);outline-offset:2px}.option-key{border-radius:var(--radius-sm);background:var(--surface-2);width:30px;height:30px;color:var(--ink-2);flex:none;justify-content:center;align-items:center;font-size:13px;font-weight:600;display:flex}.option-text{font-size:15px;line-height:1.45}.answer-option:has(input:checked){border:2px solid var(--accent);background:var(--accent-tint);padding:9px 15px}.answer-option:has(input:checked) .option-key{background:var(--accent);color:#fff}.answer-options:disabled .answer-option{cursor:default;opacity:.7}.line-answer{flex-direction:column;gap:12px;display:flex}.line-answer .hint{font-size:14px}.free-text{flex-direction:column;gap:6px;display:flex}.free-text textarea{box-sizing:border-box;border:1px solid var(--line-strong);border-radius:var(--radius-md);background:var(--surface);width:100%;min-height:240px;color:var(--ink);font-family:var(--font-mono);resize:vertical;padding:14px 16px;font-size:14px;line-height:1.6}.free-text textarea:focus{border-color:var(--accent)}.counter{color:var(--muted);font-family:var(--font-mono);align-self:flex-end;font-size:12px}.counter.full{color:var(--error)}.question-footer{border-top:1px solid var(--line);background:var(--surface);position:sticky;bottom:0}.footer-inner{flex-wrap:wrap;align-items:center;gap:12px;max-width:1180px;margin:0 auto;padding:14px 24px;display:flex}.question-actions{gap:10px;margin-left:auto;display:flex}.transition{color:var(--ink-2);margin:0;font-size:20px}.overlay{z-index:10;background:#0f1218eb;place-items:center;padding:16px;display:grid;position:fixed;inset:0}.overlay-box{border-radius:var(--radius-lg);background:var(--surface);text-align:center;flex-direction:column;align-items:center;gap:12px;max-width:28rem;padding:32px;display:flex}.overlay-box p{color:var(--muted);margin:0 0 8px}