:root{--ink:#1b3338;--muted:#627573;--line:#dce3de;--paper:#f5f6f1;--white:#fff;--teal:#146659;--mint:#e5efe6;--orange:#9c5829;--nav:#162f35;--red:#a73b37}*{box-sizing:border-box}body{margin:0;color:var(--ink);background:var(--paper);font:15px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}button,input,select,textarea{font:inherit}button,a,input,select,textarea{outline-offset:4px}button{cursor:pointer;border:1px solid var(--line);border-radius:8px;padding:10px 15px;background:white;color:var(--ink);font-weight:550}button:hover{background:#eaf0e8;border-color:#b4c6bc}button:disabled{opacity:.45;cursor:not-allowed}.primary{background:var(--teal);border-color:var(--teal);color:white}.primary:hover{background:#0e5147}.danger{color:var(--red)}a{color:var(--teal)}input,select,textarea{border:1px solid #bfcfc5;border-radius:7px;padding:10px;background:white;color:var(--ink);max-width:100%}textarea{width:100%;min-height:150px;resize:vertical}label{display:block;font-size:14px}label input:not([type=checkbox]):not([type=radio]),label select{display:block;margin-top:6px;width:100%}input[type=checkbox],input[type=radio]{accent-color:var(--teal);width:18px;height:18px;vertical-align:middle}.layout{display:grid;grid-template-columns:236px minmax(0,1fr);min-height:100vh}.sidebar{background:var(--nav);color:#d2dfdb;padding:30px 22px;display:flex;flex-direction:column;gap:28px}.brand{font-family:Georgia,serif;color:#f6f5e9;font-size:34px;letter-spacing:-1px;display:flex;align-items:center;gap:12px}.mark{background:#d5edc9;color:var(--nav);width:38px;height:42px;border-radius:12px;display:grid;place-items:center;font-size:34px}.brand-sub{font-size:11px;letter-spacing:1.4px;text-transform:uppercase;margin-top:8px;color:#a0b8b4}.nav-label{font-size:10px;text-transform:uppercase;letter-spacing:1.5px;margin:5px 12px 12px;color:#91aaa6}.nav{display:grid;gap:5px}.nav button{border:0;background:transparent;color:#c8d7d1;text-align:left;font-weight:450;padding:12px}.nav button.active{background:#2c494c;color:#e6f6d9}.nav button:hover{background:#244247}.nav i{display:inline-block;width:25px;font-style:normal}.side-foot{margin-top:auto;padding-top:40px;font-size:12px;color:#a3bab3}.side-foot strong{color:#d0eac4;display:block;margin-bottom:8px}.main{min-width:0}.topbar{display:flex;align-items:center;justify-content:space-between;gap:20px;background:white;border-bottom:1px solid var(--line);padding:20px 36px}.eyebrow{font-size:11px;letter-spacing:1.4px;text-transform:uppercase;color:var(--muted);font-weight:650}.roles{display:flex;background:#f0f3ed;border:1px solid var(--line);border-radius:9px;padding:4px;gap:3px}.roles button{border:0;background:transparent;padding:7px 15px;font-size:13px}.roles .active{background:white;box-shadow:0 1px 4px #142d3320}.demo-bar{margin:20px 36px 0;padding:12px 16px;background:#eaf0e3;border:1px solid #d6dfcb;border-radius:10px;display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:12px}.demo-bar button,.demo-bar select{font-size:12px;padding:5px 9px}.demo-bar .spacer{flex:1}.dot{width:7px;height:7px;border-radius:50%;background:#507d43;display:inline-block;margin-right:6px}.clock{font-variant-numeric:tabular-nums;font-weight:650}.content{padding:32px 36px 50px;max-width:1500px;margin:auto}h1{font:36px/1.15 Georgia,serif;letter-spacing:-.7px;margin:8px 0 12px}h2{font-size:18px;margin:0 0 8px;font-weight:620}h3{font-size:15px;margin:0 0 10px}p{margin:8px 0 16px}.muted{color:var(--muted)}.small{font-size:12px}.page-head{display:flex;gap:20px;align-items:center;justify-content:space-between;margin-bottom:25px}.page-head p{margin:0;color:var(--muted)}.tag{display:inline-flex;align-items:center;border-radius:5px;padding:4px 8px;font-size:11px;font-weight:600;white-space:nowrap;background:#edf1eb;color:#5c7166}.tag.green{background:#e0efe6;color:#24614e}.tag.orange{background:#fbeddc;color:#92541f}.tag.red{background:#f8e5e0;color:#a13f32}.tag.blue{background:#e6edf5;color:#496580}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:26px}.stat{background:white;border:1px solid var(--line);border-radius:11px;padding:20px}.stat strong{font:38px/1.2 Georgia,serif;display:block;margin:8px 0}.stat span{font-size:12px;color:var(--muted)}.card{background:white;border:1px solid var(--line);border-radius:12px;padding:24px;margin-bottom:20px}.card-head{display:flex;justify-content:space-between;gap:15px;align-items:start;margin-bottom:18px}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:20px}.grid-main{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:22px}.wave-number{font:30px Georgia,serif;color:#749083}.wave-title{display:flex;gap:16px;align-items:center}.wave-time{font-size:24px;font-variant-numeric:tabular-nums;letter-spacing:-.5px;margin:20px 0 4px}.actions{display:flex;gap:9px;flex-wrap:wrap;align-items:center;margin-top:18px}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse;font-size:13px;text-align:left}th{font-size:10px;letter-spacing:.9px;text-transform:uppercase;color:var(--muted);font-weight:600;background:#f8faf6}th,td{padding:14px 12px;border-bottom:1px solid #e9ede7}td strong{display:block;font-weight:600}td small{display:block;color:var(--muted);margin-top:3px}td button{padding:6px 10px;font-size:12px}.person{display:flex;align-items:center;gap:10px}.avatar{display:grid;place-items:center;width:33px;height:33px;min-width:33px;border-radius:50%;background:#edf1e4;color:#5e765e;font-size:11px}.progress{background:#e8eee7;height:5px;width:90px;border-radius:5px;margin-top:7px;overflow:hidden}.progress b{height:100%;display:block;background:#539c79}.notice{padding:15px 18px;border-radius:9px;background:#f0f4ec;border:1px solid #dbe5d7;margin:16px 0;font-size:13px}.notice.warn{background:#fff4e6;border-color:#f0d7b3}.steps{display:grid;gap:17px;margin:20px 0}.step{display:flex;gap:13px;font-size:13px}.step b{flex-shrink:0;border:1px solid var(--line);border-radius:50%;width:25px;height:25px;text-align:center;line-height:24px;font-size:11px}.step p{margin:0}.chat{max-width:580px;margin:auto;background:#e6ece7;border:1px solid #d0ddd4;border-radius:16px;overflow:hidden}.chat-head{background:white;padding:18px 22px;display:flex;gap:12px;align-items:center}.messages{padding:24px;min-height:270px;display:grid;gap:14px;align-content:start}.bubble{background:white;border-radius:12px 12px 12px 3px;padding:13px 16px;max-width:90%;font-size:14px;white-space:pre-wrap;box-shadow:0 1px 2px #18352b0b}.bubble.you{justify-self:end;background:#d3e7c5;border-radius:12px 12px 3px 12px}.chat-form{padding:14px;display:flex;gap:8px;background:#f5f8f3}.chat-form input{flex:1;min-width:0}.chat-foot{padding:12px 20px;text-align:center;color:var(--muted);font-size:11px}.student-shell{max-width:900px;margin:auto}.hero{background:#183d3d;color:#f5f9ee;padding:32px;border-radius:13px;margin-bottom:24px;position:relative;overflow:hidden}.hero .eyebrow,.hero .muted{color:#bed4c6}.hero h1{font-size:38px}.hero .orbit{position:absolute;right:30px;top:0;font:150px Georgia,serif;color:#b3d7a91b}.question-nav{display:flex;gap:7px;flex-wrap:wrap;margin:20px 0}.question-nav button{width:40px;height:40px;padding:0}.question-nav .answered{background:#e0eee3;border-color:#bad4c1}.question-nav .active{background:var(--teal);color:white}.question{min-height:310px}.option{display:flex;align-items:center;gap:13px;border:1px solid var(--line);padding:13px 16px;border-radius:9px;margin:10px 0;cursor:pointer}.option:has(input:checked){background:#edf5eb;border-color:#79a58b}.question pre,.code{white-space:pre-wrap;background:#f1f4ef;border-radius:8px;padding:20px;font:14px/1.6 ui-monospace,SFMono-Regular,monospace}.timer{font-size:26px;font-variant-numeric:tabular-nums;font-weight:600}.timer.low{color:var(--red)}.save{font-size:12px;color:var(--teal)}.model{border:1px solid var(--line);padding:17px;border-radius:9px;margin:12px 0}.score{font:60px Georgia,serif;color:var(--teal);margin:12px 0}.score small{font:20px -apple-system,sans-serif;color:var(--muted)}.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:16px 0}.checkline{display:flex;align-items:center;gap:10px}.empty{text-align:center;padding:30px;color:var(--muted)}.oral-person{padding:18px 0;border-bottom:1px solid var(--line)}.oral-person textarea{min-height:90px;margin-top:10px}#toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:#173e36;color:white;border-radius:9px;padding:13px 22px;max-width:90vw;z-index:99;display:none;box-shadow:0 5px 30px #0002}dialog{border:1px solid var(--line);border-radius:14px;padding:28px;max-width:530px;width:calc(100% - 30px);color:var(--ink)}dialog::backdrop{background:#122d3566}dialog form{display:grid;gap:15px}dialog textarea{min-height:85px}.inline-form{display:flex;gap:10px;flex-wrap:wrap;align-items:end}.inline-form label{flex:1;min-width:130px}.audit{padding:13px 0;border-bottom:1px solid var(--line);font-size:13px}.audit time{font-size:11px;color:var(--muted);margin-right:15px}.btn-link{border:0;padding:0;background:transparent;color:var(--teal);text-decoration:underline}.hint-key{border:1px solid var(--line);border-radius:4px;padding:1px 5px;font:12px monospace}.section-gap{margin-top:30px}.readonly{background:#f6f7f2}.nowrap{white-space:nowrap}@media(min-width:1500px){.content{padding-top:40px}}@media(max-width:1100px){.layout{grid-template-columns:194px minmax(0,1fr)}.sidebar{padding:25px 14px}.topbar{padding:18px 24px}.content{padding:26px 24px}.demo-bar{margin:16px 24px 0}.grid-main{grid-template-columns:1fr}.stats{gap:10px}.stat{padding:16px}.grid2{gap:14px}}@media(max-width:760px){.layout{display:block}.sidebar{padding:15px 18px;gap:12px}.brand{font-size:26px}.brand-sub,.side-foot,.nav-label{display:none}.nav{display:flex;overflow:auto;gap:4px}.nav button{white-space:nowrap;padding:8px;font-size:12px}.nav i{display:none}.topbar{padding:13px 16px;flex-wrap:wrap;gap:10px}.roles button{padding:7px 12px}.content{padding:24px 16px}.demo-bar{margin:12px 16px 0;gap:8px}.stats{grid-template-columns:1fr 1fr}.grid2{grid-template-columns:1fr}.page-head{align-items:start;flex-wrap:wrap}h1{font-size:30px}.card{padding:18px}.hero{padding:24px}.hero h1{font-size:32px}.field-row{grid-template-columns:1fr}.stat strong{font-size:30px}.question-nav{gap:5px}.question-nav button{width:32px;height:35px}.messages{padding:16px}}

.correct-option{background:#edf5eb;border-color:#79a58b}.bank-question .option{cursor:default;flex-wrap:wrap}.bank-question .option .tag{margin-left:auto}
@media(max-width:760px){.card-head{flex-wrap:wrap}.bank-question .option .tag{margin-left:0}}

/* Student page text stays unselectable; answer fields retain native editing. */
.student-view{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}
.student-view input,.student-view textarea,.student-view [contenteditable="true"]{-webkit-user-select:text;user-select:text;-webkit-touch-callout:default}