:root{--navy:#17243c;--teal:#007f76;--mint:#e1f4ed;--cream:#f8f8f3;--yellow:#f8d973;--pink:#ed6995;--muted:#66716e;--line:#dce2da;--white:#fff;--radius:18px}*{box-sizing:border-box}body{margin:0;color:var(--navy);background:var(--cream);font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:15px;line-height:1.6}button,input,select,textarea{font:inherit}button,a{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.48}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid 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12px;font-size:11px;line-height:1.4;background:white;white-space:nowrap}.pill.green{background:var(--mint);border-color:#bedfd1;color:#176e54}.dot{width:6px;height:6px;background:var(--teal);border-radius:100%}.container{max-width:1216px;margin:auto;padding:50px 36px}.hero{display:grid;grid-template-columns:1.2fr .8fr;gap:70px;align-items:center;padding:24px 0 54px}.hero h1{margin:22px 0}.hero h1 em{font-style:normal;color:var(--teal)}.hero .lead{font-size:17px;max-width:470px;color:var(--muted);margin:24px 0 28px;line-height:1.7}.btn{border:1px solid var(--navy);border-radius:8px;background:var(--navy);color:white;padding:12px 20px;font-weight:550;display:inline-flex;align-items:center;justify-content:center;gap:12px;font-size:13px}.btn.teal{background:var(--teal);border-color:var(--teal)}.btn.ghost{color:var(--navy);background:transparent;border-color:var(--line)}.btn.danger{color:#a02943;border-color:#ebc7d0;background:#fff4f6}.btn.small{padding:7px 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p{color:var(--muted);font-size:13px;margin-top:8px}.step-num{display:inline-flex;background:#f3f4ef;border-radius:9px;width:35px;height:35px;align-items:center;justify-content:center;font-size:12px;margin-bottom:18px}.notice{background:#fdf5d9;border:1px solid #eedfa7;border-radius:10px;padding:15px 19px;font-size:13px;color:#67571d;margin:20px 0}.notice.info{background:#eaf3f3;border-color:#cadddb;color:#335956}.footer{max-width:1144px;margin:35px auto 0;border-top:1px solid var(--line);padding:25px 0;display:flex;justify-content:space-between;color:var(--muted);font-size:11px}.loginbox{margin-top:24px;padding:18px;background:white;border:1px solid var(--line);border-radius:12px;max-width:470px}.layout{display:grid;grid-template-columns:225px 1fr;min-height:100vh}.sidebar{background:var(--navy);color:white;padding:28px 22px;display:flex;flex-direction:column;gap:32px}.sidebar .brand img{background:white;border-radius:7px;padding:5px;width:45px;height:60px}.sidebar .brand 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.mark{float:right;color:var(--teal);font-size:20px}.toolbar{display:flex;gap:12px;justify-content:space-between;align-items:center;margin:18px 0}.tablewrap{overflow:auto;background:white;border:1px solid var(--line);border-radius:14px}table{border-collapse:collapse;width:100%;font-size:12px}th{text-align:left;padding:13px 18px;background:#f0f3ee;font-weight:600;color:var(--muted);white-space:nowrap}td{padding:17px 18px;border-top:1px solid #edf0e9}td strong{display:block;font-weight:600}td small{color:var(--muted)}.empty{text-align:center;padding:60px 24px}.empty .empty-icon{display:block;margin:auto auto 14px;width:46px;height:46px;border-radius:100%;background:var(--mint);color:var(--teal);font-size:24px;line-height:46px}.empty p{font-size:13px;color:var(--muted);margin:8px auto 20px;max-width:370px}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:22px}.field{display:block;margin:12px 0;font-size:12px;font-weight:600}.field input,.field select,.field textarea,input.search{display:block;width:100%;margin-top:6px;padding:10px 12px;border:1px solid #ccd5ce;background:#fff;border-radius:7px;color:var(--navy);font-weight:400}.field textarea{min-height:95px;resize:vertical}.search{max-width:320px}.field input[type=checkbox]{display:inline;width:auto;margin-right:10px}.report-layout{display:grid;grid-template-columns:330px 1fr;gap:25px}.report-player{position:sticky;top:20px;align-self:start}.report-player video{width:100%;max-height:250px;border-radius:12px;background:var(--navy)}.question-links{display:grid;grid-template-columns:repeat(5,1fr);gap:7px;margin:16px 0}.qbutton{border:1px solid var(--line);border-radius:7px;background:white;padding:7px;color:var(--navy);font-size:12px}.qbutton.active{background:var(--teal);color:white;border-color:var(--teal)}.rubric{background:#f7f8f3;border:1px solid var(--line);padding:16px;border-radius:10px;margin:12px 0}.rubric .field{margin-top:6px}.report-actions{display:flex;gap:10px;flex-wrap:wrap;margin:20px 0}.exam-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:26px}.camera{width:100%;aspect-ratio:4/3;object-fit:cover;background:#152239;border-radius:14px;transform:scaleX(-1)}.exam-question{background:white;padding:40px;border:1px solid var(--line);border-radius:20px;min-height:390px;display:flex;flex-direction:column;justify-content:center}.exam-question h2{font-size:29px;line-height:1.4;margin:22px 0}.timer{font-variant-numeric:tabular-nums;font-size:30px;font-weight:600}.exam-bar{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:25px}.progress{height:5px;background:#dbe4dd;border-radius:5px;overflow:hidden;margin:14px 0}.progress i{display:block;height:100%;background:var(--teal);transition:width .3s}.rec{color:#b33655;font-size:12px}.success{max-width:640px;text-align:center;padding:80px 30px;margin:auto}.success h1{font-size:40px;letter-spacing:-1px;margin:20px 0}.checkcircle{width:64px;height:64px;border-radius:100%;background:var(--mint);color:var(--teal);font-size:32px;line-height:64px;margin:auto}.loading{text-align:center;padding:25vh 20px;font-size:24px}.loading small{color:var(--muted)}#toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);background:var(--navy);color:white;max-width:90vw;padding:14px 22px;border-radius:10px;font-size:13px;z-index:999;display:none;box-shadow:0 5px 30px #0002}dialog{border:1px solid var(--line);border-radius:18px;padding:30px;width:min(480px,90vw);color:var(--navy)}dialog::backdrop{background:#17243c80}dialog p{margin:15px 0;color:var(--muted);font-size:14px}.mobile-nav{display:none}details{margin:15px 0;border:1px solid var(--line);border-radius:10px;padding:15px}summary{cursor:pointer;font-size:13px;font-weight:600}.danger-text{color:#a02943}.status-panel{margin:20px 0;border-left:3px solid var(--teal);padding:10px 20px;background:#edf5ef}.hidden{display:none!important}@media(max-width:1000px){.hero{gap:30px}.layout{grid-template-columns:180px 1fr}.sidebar{padding:25px 12px}.admin-main{padding:25px}.report-layout{grid-template-columns:1fr}.report-player{position:static}.report-player video{max-width:480px}.top{padding:0 28px}.hero-notes{flex-wrap:wrap;gap:10px}.visual{padding:25px}.stat{padding:20px}}@media(max-width:720px){h1{font-size:43px;letter-spacing:-1.7px}.top{height:85px;padding:0 20px}.top nav{gap:12px;font-size:11px}.top nav .pill{display:none}.brand strong{font-size:14px}.brand img{width:32px;height:50px}.container{padding:30px 20px}.hero{grid-template-columns:1fr;gap:35px;padding-top:10px}.visual{min-height:300px}.sound{height:110px}.hero .lead{font-size:15px}.stat{padding:18px 10px;display:block;text-align:center}.stat strong{font-size:26px}.stat 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[hidden]{display:none!important}.response-guide{font-size:1.05rem;line-height:1.6}.grammar-guide{padding:16px;border-left:3px solid var(--teal);background:#edf6f4;font-size:1rem;line-height:1.6}.question-preview{padding-left:24px}.question-preview li{padding:18px 0;border-bottom:1px solid #dce5e4}.question-preview p{margin:8px 0}