:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:#243e38;background:#f7f8f2;font-synthesis:none;line-height:1.6;font-weight:400}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,input,select{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:wait;opacity:.6}a{color:inherit}header{max-width:1240px;margin:auto;padding:26px 36px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #dce2d7}.wordmark{display:flex;align-items:center;gap:14px;text-decoration:none;font-size:20px;font-weight:650;letter-spacing:-.5px}.wordmark b{font-weight:400;color:#56705a}.monogram{background:#193f37;color:#f6f8ef;padding:8px 10px;border-radius:8px;font-family:Georgia,serif;font-size:16px}.header-note{font-size:12px;color:#617268}main{max-width:1160px;margin:0 auto;padding:62px 36px 80px;min-height:70vh}h1,h2,h3,p{margin-top:0}h1{font-family:Georgia,Times New Roman,serif;font-weight:400;font-size:clamp(36px,5vw,62px);line-height:1.13;letter-spacing:-1.8px;margin-bottom:24px}h1 em{color:#547343;font-weight:400}h2{font-size:21px;line-height:1.4;letter-spacing:-.4px}h3{font-size:15px;line-height:1.4}.eyebrow{text-transform:uppercase;letter-spacing:1.8px;font-weight:700;font-size:11px;color:#61725b;margin-bottom:18px}.lead{max-width:670px;font-size:18px;color:#5b6c62;line-height:1.75}.facts{display:flex;gap:22px;font-size:13px;margin:28px 0 32px;color:#516357}.facts span:before{content:"·";margin-right:8px;color:#6e883f}.primary{background:#193f37;color:#fff;border:1px solid #193f37;border-radius:8px;padding:13px 24px;font-weight:600;min-height:48px}.primary span{margin-left:22px}.primary:hover{background:#2a574b}.card{background:#fff;border:1px solid #dce3d8;border-radius:14px;padding:30px;box-shadow:0 6px 18px #21372804}.intro-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;margin-top:72px;padding-top:36px;border-top:1px solid #dce2d7}.intro-grid p{font-size:14px;color:#5b6c62}.number{font-family:Georgia,serif;font-size:28px;color:#81935d;display:block;margin-bottom:12px}.setup{max-width:520px;margin-top:30px}.setup h2{margin-bottom:6px}label{display:block;font-size:14px;font-weight:600;margin-bottom:7px}input:not([type=radio]):not([type=checkbox]),select{display:block;width:100%;border:1px solid #b6c3b8;border-radius:7px;background:#fff;padding:12px;color:#243e38;margin-bottom:18px;min-height:48px}input.answer{max-width:300px;font-size:24px;letter-spacing:1px}.small{font-size:12px;color:#627167}.section-heading{display:flex;align-items:start;justify-content:space-between;gap:24px}.section-heading h1{font-size:36px;max-width:640px}.pill{white-space:nowrap;background:#e8eedf;padding:6px 12px;border-radius:30px;font-size:12px}.diagnostic>progress{margin-bottom:36px}progress{appearance:none;display:block;width:100%;height:7px;border:0;border-radius:8px;overflow:hidden;background:#e8ece2}progress::-webkit-progress-bar{background:#e8ece2}progress::-webkit-progress-value{background:#7d9660}progress::-moz-progress-bar{background:#7d9660}.diagnostic-grid{display:grid;grid-template-columns:minmax(0,1.8fr) minmax(0,1fr);gap:40px}.question-card h2{font-size:28px;line-height:1.5;margin-bottom:26px}.thinking-note{padding-top:24px}.thinking-note h2{font-family:Georgia,serif;font-weight:400;font-size:28px}.thinking-note p{color:#657364;font-size:14px}fieldset{border:0;margin:0 0 24px;padding:0}.option{display:flex;align-items:center;gap:12px;border:1px solid #d5ded0;border-radius:8px;padding:14px;margin-bottom:10px;cursor:pointer;min-height:52px;font-weight:500}.option.selected{border-color:#547343;background:#eef3e6}input[type=radio],input[type=checkbox]{accent-color:#193f37;width:18px;height:18px;flex-shrink:0}.feedback{max-width:780px;margin:20px auto;border-left:5px solid #b69d53}.feedback.correct{border-left-color:#7d9660}.feedback p{font-size:20px}.visual-wrap{margin:24px 0}.fraction-visual{display:flex;max-width:420px;height:68px;border:2px solid #193f37;border-radius:4px;overflow:hidden}.fraction-visual span{flex:1;border-right:1px solid #193f37;background:#f7f8f2}.fraction-visual span:last-child{border:0}.fraction-visual .shaded{background:#779661}.visual-wrap p{margin-top:8px}.results-grid{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:24px;margin-top:28px}.insight{background:#eaf0e0;border-color:#d4dfc6}.insight>p{font-size:18px}.insight>.small{font-size:12px;margin:0}.skill{padding:20px 0;border-bottom:1px solid #edf0e8}.skill:last-child{border:0}.skill-title,.skill-detail{display:flex;justify-content:space-between;gap:12px}.skill-title h3{margin-bottom:10px}.skill-title strong{font-size:14px}.skill-detail{font-size:11px;color:#627167;margin-top:6px}.prerequisites{font-size:11px;color:#627167;margin:6px 0 0}.result-notes{display:flex;flex-direction:column;gap:20px}.result-notes p{font-size:14px}.result-notes h2{font-size:19px}.result-notes h3{margin-bottom:8px}footer{max-width:1160px;padding:28px 36px 40px;margin:auto;border-top:1px solid #dce2d7;font-size:13px}footer p{margin-bottom:6px}.text-button,footer button,.error button{background:none;border:0;color:#294f40;text-decoration:underline;padding:8px 0;min-height:44px}.forget button{margin-right:20px}.error{border:1px solid #c39175;background:#fff3ed;padding:18px;margin-bottom:24px;color:#763e29}.error button{display:block}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}:focus-visible{outline:3px solid #ad752b;outline-offset:4px}@media(max-width:760px){header{padding:20px}.header-note{display:none}main{padding:38px 20px 50px}.intro-grid,.diagnostic-grid,.results-grid{grid-template-columns:1fr}.intro-grid{gap:24px;margin-top:46px}.facts{flex-wrap:wrap;gap:8px 16px}.section-heading{flex-direction:column;gap:0}.section-heading h1{font-size:32px}.section-heading .pill{margin-bottom:16px}.card{padding:22px}.question-card h2{font-size:24px}.thinking-note{padding:0}.diagnostic-grid{gap:20px}footer{padding:24px 20px}.wordmark,.feedback p{font-size:18px}.skill-title h3{max-width:80%}}.student-feedback{margin:20px 0;padding-top:16px;border-top:1px solid #ccd6ca}.feedback-options{display:flex;flex-wrap:wrap;gap:10px}.feedback-options button{min-height:44px}