:root{--ink:#35313e;--accent:#72556e;--soft:#eee6ed;--paper:#faf8f5;--line:#ded5de;--muted:#6e6270}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.6 Arial,sans-serif}body.grammatica{--ink:#253e3c;--accent:#426f66;--soft:#e6efea;--line:#cddbd4;--muted:#5b7069}header{display:flex;align-items:center;gap:18px;padding:22px 4vw;border-bottom:1px solid var(--line);background:#fffdfa}header strong{display:block;font:26px/1.3 Georgia,serif}header small{color:var(--muted);font-size:12px}.mark{font:italic 30px Georgia;background:var(--soft);color:var(--accent);padding:15px;border-radius:14px 14px 14px 3px}.eyebrow{display:block;font-size:10px;letter-spacing:.12em;font-weight:bold;color:var(--muted)}#session-status{margin-left:auto;color:var(--muted);font-size:13px}main{max-width:1320px;margin:40px auto;padding:0 32px 80px}h1,h2,h3{font-family:Georgia,serif;line-height:1.25;font-weight:500}h1{font-size:40px;margin:12px 0 24px}h2{font-size:27px}h3{font-size:21px}.lead{font-size:19px;color:var(--muted);max-width:720px}.panel{background:#fffdfa;border:1px solid var(--line);border-radius:15px;padding:28px;margin:22px 0}.login{max-width:550px;margin:55px auto}.login h1{font-size:36px}label{display:block;font-weight:600;margin:18px 0 7px}input,textarea,select{font:inherit;color:var(--ink);border:1px solid var(--line);background:white;border-radius:7px;padding:11px;width:100%}textarea{min-height:170px;resize:vertical;line-height:1.7}button,.button{font:600 14px Arial;background:var(--accent);color:white;border:1px solid var(--accent);border-radius:8px;padding:12px 18px;cursor:pointer;text-decoration:none}button:disabled{opacity:.5;cursor:wait}button.secondary{background:transparent;color:var(--accent)}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid #aa7458;outline-offset:3px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin:20px 0}.note{padding:18px 22px;background:var(--soft);border-radius:10px;font-size:14px}.small{font-size:13px;color:var(--muted)}.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.metric{padding:18px;background:var(--soft);border-radius:12px}.metric strong{display:block;font:30px Georgia}.tabs{display:flex;gap:9px;flex-wrap:wrap;border-bottom:1px solid var(--line);padding-bottom:20px;margin:30px 0}.tabs button{background:transparent;color:var(--accent)}.tabs .active{background:var(--accent);color:white}.row{display:grid;grid-template-columns:1fr 1fr;gap:20px}.question{border:1px solid var(--line);border-radius:12px;padding:24px;margin:16px 0;background:#fff}.question>label{font-weight:400}.question input[type=checkbox]{width:auto}.badge{font-size:11px;padding:5px 8px;border-radius:5px;background:var(--soft);color:var(--accent)}details{margin-top:18px}summary{cursor:pointer;font-weight:600;color:var(--accent)}pre{white-space:pre-wrap;overflow-wrap:anywhere;font:14px/1.6 Arial}.exam{display:grid;grid-template-columns:220px minmax(0,1fr);gap:32px}.exam aside{position:sticky;top:20px;align-self:start}.timer{font:34px Georgia;font-variant-numeric:tabular-nums}.question-nav{display:grid;grid-template-columns:repeat(4,1fr);gap:7px;margin:20px 0}.question-nav button{padding:9px 0;background:white;color:var(--accent);border-color:var(--line)}.question-nav button.answered{background:var(--soft)}.question-nav button.current{border:2px solid var(--accent)}.choice{display:flex;align-items:flex-start;gap:12px;font-weight:400;padding:14px;border:1px solid var(--line);border-radius:8px;margin:10px 0;cursor:pointer}.choice input{width:auto;margin-top:5px}.prompt{white-space:pre-wrap}.attempt-tools{display:flex;justify-content:space-between;gap:15px;margin-top:28px}.receipt{text-align:center;padding:45px}.receipt code{display:block;overflow-wrap:anywhere;margin:20px;font-size:15px}.error{color:#9a382e}#message{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:var(--ink);color:#fff;padding:14px 22px;border-radius:8px;max-width:90vw;display:none;z-index:30}#message.show{display:block}.review-answer{white-space:pre-wrap;padding:18px;background:var(--paper);border-radius:8px}table{width:100%;border-collapse:collapse}td,th{text-align:left;padding:12px;border-bottom:1px solid var(--line)}.scroll{overflow:auto}.bank-editor{min-height:420px;font:13px/1.6 monospace}@media(max-width:760px){header{padding:18px;gap:12px}header strong{font-size:22px}header .eyebrow{font-size:8px}#session-status{display:none}main{padding:0 18px 50px;margin-top:24px}.metrics{grid-template-columns:1fr 1fr}.row,.exam{grid-template-columns:1fr}.exam aside{position:static}.question-nav{grid-template-columns:repeat(8,1fr)}.panel{padding:22px}h1{font-size:32px}}
input[type=checkbox]{width:auto;margin-right:8px}

.welcome{max-width:850px;margin:25px 0 30px}.welcome h1{max-width:760px}.access-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:26px;max-width:1100px}.access-card{margin:0;padding:32px}.access-card h2{margin:20px 0 10px}.access-card>p{color:var(--muted)}.teacher-card{background:var(--soft)}.access-submit{width:100%;margin-top:12px;padding:16px}.password-toggle{font-size:12px;padding:7px 11px;margin-top:9px}.access-card .error:empty{display:none}.home-help{max-width:900px;color:var(--muted);font-size:14px;margin-top:24px}@media(max-width:760px){.access-grid{grid-template-columns:1fr}.access-card{padding:24px}.welcome h1{font-size:32px}}