:root{--ink:#1f2933;--accent:#2456a6;--line:#e5e9ef;--good:#2e7d4f;--bad:#b3402a;--amber:#e8a13d;--soft:#f6f8fb;--muted:#6b7280}*{box-sizing:border-box}body{font-family:Arial,sans-serif;background:#fff;color:var(--ink);margin:0}.wrap{max-width:760px;margin:0 auto;padding:24px 16px 64px}h1{font-size:22px;margin:8px 0 20px}h2{font-size:16px;margin:24px 0 8px}label{display:block;font-size:14px;margin:12px 0 4px}input,select,textarea{font:inherit;padding:10px;border:1px solid var(--line);border-radius:8px;width:100%}textarea{min-height:220px;line-height:1.5}button{font:inherit;border:0;border-radius:10px;padding:10px 16px;cursor:pointer;background:var(--accent);color:#fff}button.good{background:var(--good)}button.bad{background:var(--bad)}.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.row input,.row select{width:auto;flex:1 1;min-width:140px}.card{border:1px solid var(--line);border-radius:12px;padding:18px;margin:12px 0}.muted{color:var(--muted)}.muted,.note{font-size:14px}.note{border-radius:10px;padding:12px 14px;line-height:1.5;margin-top:16px}.note,.quote{background:var(--soft)}.quote{border-radius:8px;padding:8px 10px;font-style:italic}.crit{border-left:3px solid var(--accent);padding:6px 12px;margin:10px 0}.flag{display:inline-block;font-size:12px;border-radius:6px;padding:2px 8px;margin:2px 4px 2px 0;background:var(--soft);border:1px solid var(--line)}.flag.fail{border-color:var(--bad);color:var(--bad)}.stem{font-size:20px;line-height:1.45;margin-bottom:20px}.opt{display:block;width:100%;text-align:left;font-size:17px;padding:14px 16px;margin:8px 0;background:#fff;color:var(--ink);border:2px solid var(--line);border-radius:10px}.opt:hover{border-color:var(--accent)}.opt.right{border-color:var(--good);background:#f0f7f2}.opt.wrong{border-color:var(--bad);background:#faf1ee}.progress{height:10px;background:var(--line);border-radius:5px;overflow:hidden;margin:16px 0}.progress span{display:block;height:100%;background:var(--amber);transition:width .3s}table{border-collapse:collapse;width:100%;font-size:14px}td,th{text-align:left;padding:8px 10px;border-bottom:1px solid var(--line)}th{font-weight:700;color:var(--muted)}a{color:var(--accent)}