:root{--ink:#17243b;--muted:#68758a;--paper:#fff;--bg:#f3f6f4;--green:#176b55;--green2:#dceee7;--gold:#e7aa43;--line:#dce3e0;--bad:#b43c48;--shadow:0 16px 45px rgba(22,43,36,.10)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,Segoe UI,Arial,sans-serif}.hidden{display:none!important}button{font:inherit;cursor:pointer}.topbar{height:76px;padding:0 clamp(20px,5vw,72px);display:flex;align-items:center;justify-content:space-between;background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.brand{display:flex;align-items:center;gap:12px;color:var(--ink);text-decoration:none}.brand>span{display:grid;place-items:center;width:42px;height:42px;border-radius:12px;background:var(--green);color:#fff;font-weight:900}.brand div{display:flex;flex-direction:column}.brand small{color:var(--muted);font-size:11px;letter-spacing:.1em}.timer{text-align:right}.timer small{display:block;color:var(--muted);font-size:9px;letter-spacing:.12em}.timer strong{font-size:24px;font-variant-numeric:tabular-nums}.timer.warning strong{color:var(--bad)}main{min-height:calc(100vh - 76px)}.welcome,.results{max-width:1080px;margin:auto;padding:64px 24px 80px}.eyebrow{color:var(--green);font-weight:800;font-size:12px;letter-spacing:.15em}.welcome h1,.results h1{font-family:Georgia,serif;font-size:clamp(48px,7vw,78px);line-height:.96;margin:16px 0 22px;font-weight:500}.welcome h1 em{color:var(--green);font-weight:500}.lead{max-width:680px;color:var(--muted);font-size:19px;line-height:1.6}.parts{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:42px 0}.parts article{background:var(--paper);border:1px solid var(--line);border-radius:18px;padding:24px;display:grid;grid-template-columns:1fr auto;box-shadow:0 6px 22px rgba(22,43,36,.04)}.parts b{color:var(--green);font-size:13px}.parts span{grid-column:1;font-size:15px;margin-top:7px}.parts strong{grid-column:2;grid-row:1/3;font-family:Georgia,serif;font-size:48px;color:var(--ink)}.parts small{grid-column:2;text-align:right;color:var(--muted)}.instructions{border-left:4px solid var(--gold);padding:5px 0 5px 20px;margin:30px 0}.instructions h2{font-size:16px;margin:0 0 8px}.instructions ul{margin:0;padding-left:20px;color:var(--muted);line-height:1.8}.primary,.secondary,.ghost,.submit-side{border:0;border-radius:10px;padding:13px 20px;font-weight:750}.primary{background:var(--green);color:#fff}.primary:hover{background:#105542}.primary.big{padding:17px 25px;font-size:16px;box-shadow:0 10px 26px rgba(23,107,85,.22)}.primary.big span{margin-left:18px}.secondary{background:#fff;color:var(--ink);border:1px solid var(--line)}.ghost{background:transparent;color:var(--green);border:1px solid var(--green)}.exam{display:grid;grid-template-columns:280px 1fr;min-height:calc(100vh - 76px)}.sidebar{background:#fff;border-right:1px solid var(--line);padding:26px 22px;position:sticky;top:76px;height:calc(100vh - 76px);overflow:auto}.progress-copy{display:flex;justify-content:space-between;align-items:end}.progress-copy span{font-size:9px;letter-spacing:.12em;color:var(--muted)}.progress-copy b{font-size:12px}.progress{height:6px;background:#e8edeb;border-radius:99px;margin:10px 0 25px;overflow:hidden}.progress i{height:100%;display:block;background:var(--green);width:0}.part-button{width:100%;text-align:left;border:0;background:transparent;padding:15px;border-radius:12px;margin:4px 0;color:var(--muted);display:flex;justify-content:space-between}.part-button.active{background:var(--green2);color:var(--green);font-weight:800}.part-button small{font-weight:500}.legend{border-top:1px solid var(--line);margin-top:20px;padding-top:20px;display:flex;gap:14px;flex-wrap:wrap;color:var(--muted);font-size:11px}.legend i{display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:5px}.legend .answered{background:var(--green)}.legend .current{border:2px solid var(--gold)}.submit-side{width:100%;background:var(--ink);color:#fff;margin-top:24px}.workspace{padding:38px clamp(24px,5vw,72px) 70px;max-width:1050px;width:100%;margin:auto}.section-head{display:flex;justify-content:space-between;gap:20px;align-items:flex-start;margin-bottom:24px}.section-head span{font-size:11px;font-weight:900;letter-spacing:.15em;color:var(--green)}.section-head h2{font-family:Georgia,serif;font-size:32px;margin:6px 0}.section-head p{color:var(--muted);margin:0;max-width:650px}.question-map{background:#fff;border:1px solid var(--line);border-radius:14px;padding:15px;display:grid;grid-template-columns:repeat(10,1fr);gap:7px;margin-bottom:18px}.question-map button{height:34px;border:1px solid var(--line);background:#fff;border-radius:7px;color:var(--muted)}.question-map button.done{background:var(--green);color:#fff;border-color:var(--green)}.question-map button.now{outline:3px solid rgba(231,170,67,.45);border-color:var(--gold)}.question-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:clamp(24px,5vw,48px);box-shadow:var(--shadow);min-height:430px}.q-number{font-size:11px;color:var(--muted);font-weight:800;letter-spacing:.12em}.passage{background:#f5f8f6;border-left:4px solid var(--green);padding:22px;margin:18px 0 28px;border-radius:0 12px 12px 0;line-height:1.7;white-space:pre-line}.passage strong{color:var(--green)}.question-text{font-size:20px;line-height:1.55;margin:15px 0 24px}.blank{display:inline-block;min-width:80px;border-bottom:2px solid var(--green);color:var(--green);text-align:center}.options{display:grid;grid-template-columns:1fr 1fr;gap:12px}.option{border:1px solid var(--line);border-radius:12px;background:#fff;padding:15px;text-align:left;color:var(--ink);transition:.15s}.option:hover{border-color:var(--green);transform:translateY(-1px)}.option.selected{border-color:var(--green);background:var(--green2);box-shadow:0 0 0 1px var(--green)}.option b{display:inline-grid;place-items:center;width:26px;height:26px;border-radius:50%;background:#edf1ef;margin-right:10px;font-size:12px}.option.selected b{background:var(--green);color:#fff}.controls{display:flex;justify-content:space-between;margin-top:20px}.result-hero{display:flex;align-items:center;gap:36px;background:#fff;border:1px solid var(--line);border-radius:22px;padding:40px;box-shadow:var(--shadow)}.result-hero h1{font-size:46px;margin:8px 0}.score-ring{width:160px;height:160px;border:12px solid var(--green2);border-top-color:var(--green);border-radius:50%;display:grid;place-content:center;text-align:center;flex:none}.score-ring strong{font-family:Georgia,serif;font-size:52px}.score-ring span{color:var(--muted)}.breakdown{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:24px 0}.breakdown article{background:#fff;padding:24px;border-radius:16px;border:1px solid var(--line)}.breakdown b{display:block;color:var(--green);margin-bottom:7px}.breakdown strong{font-size:32px}.result-actions{display:flex;gap:12px}.review{margin-top:30px}.review-item{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;margin:12px 0}.review-item.correct{border-left:5px solid var(--green)}.review-item.wrong{border-left:5px solid var(--bad)}.review-item p{margin:8px 0}.review-item small{color:var(--muted)}.modal{position:fixed;inset:0;background:rgba(11,25,21,.55);display:grid;place-items:center;z-index:50;padding:20px}.modal-box{background:#fff;max-width:430px;width:100%;border-radius:18px;padding:30px;box-shadow:var(--shadow)}.modal-box h2{font-family:Georgia,serif;font-size:30px;margin-top:0}.modal-box p{color:var(--muted);line-height:1.6}.modal-box>div{display:flex;justify-content:flex-end;gap:10px}
@media(max-width:800px){.parts{grid-template-columns:1fr}.exam{display:block}.sidebar{position:static;height:auto;border-right:0;border-bottom:1px solid var(--line)}#partNav{display:grid;grid-template-columns:repeat(3,1fr)}.legend,.submit-side{display:none}.workspace{padding:25px 16px 60px}.question-map{grid-template-columns:repeat(5,1fr)}.options{grid-template-columns:1fr}.breakdown{grid-template-columns:1fr}.result-hero{align-items:flex-start;flex-direction:column}.score-ring{width:130px;height:130px}.topbar{padding:0 16px}.brand small{display:none}}
@media(max-width:480px){.welcome,.results{padding:40px 16px}.welcome h1{font-size:48px}.section-head{display:block}.section-head .ghost{margin-top:16px}.question-card{padding:22px}.question-text{font-size:18px}.result-actions{flex-direction:column}}