:root{font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;color:#183b2c;background:#fff;--forest:#103d2c;--forest2:#18513a;--brown:#965a32;--cream:#f8f6f2;--ink:#162f24;--muted:#66756e}*{box-sizing:border-box}body{margin:0;background:#fff}button,input{font:inherit}button{cursor:pointer}button:focus-visible,summary:focus-visible{outline:3px solid #c89056;outline-offset:2px}.shell{min-height:100vh}.top{background:var(--forest);color:white;padding:18px max(20px,calc((100vw - 740px)/2));display:flex;align-items:center;justify-content:space-between;gap:12px}.brand{font-weight:900;font-size:25px;letter-spacing:.5px}.brand small{display:block;font-size:10px;font-weight:600;letter-spacing:3px;opacity:.85}.top .tag{font-size:12px;border:1px solid #ffffff55;border-radius:99px;padding:7px 10px;white-space:nowrap}.wrap{max-width:740px;margin:0 auto;padding:22px 18px 70px}h1{font-size:clamp(30px,6vw,44px);line-height:1.16;margin:10px 0 14px}h2{font-size:21px;line-height:1.4;margin:6px 0 16px}p{line-height:1.62}.muted{color:var(--muted)}.small{font-size:13px}.eyebrow{font-size:12px;text-transform:uppercase;letter-spacing:1.6px;font-weight:800;color:var(--brown)}.hero{background:var(--forest);color:#fff;border-radius:22px;padding:30px 25px;margin:0 0 18px}.hero .eyebrow{color:#e5b58e}.hero p{color:#e2eee7}.card{background:#fff;border:1px solid #e5e9e5;border-radius:18px;padding:20px;margin:16px 0;box-shadow:0 5px 20px #0d32200a}.question-card{background:#fff;border-left:5px solid var(--forest);border-radius:16px;padding:22px 19px;box-shadow:0 4px 22px #12362412;margin:18px 0 14px}.answers-card{background:#f6f7f6;border-radius:17px;padding:17px;margin:0 0 18px}.answers-card h3{margin:0 0 13px;font-size:14px;color:#4a6055}.options{display:grid;gap:10px}.option{display:flex;align-items:center;gap:12px;text-align:left;background:#fff;border:1.5px solid #e1e5e2;border-radius:12px;padding:13px;color:#1d3328;font-size:15px;width:100%;min-height:59px}.option .letter{flex:0 0 31px;height:31px;border:1px solid #9daea4;border-radius:50%;display:grid;place-items:center;font-weight:750}.option.sel{border-color:var(--forest);background:#e8f0eb}.option.sel .letter{background:var(--forest);color:white;border-color:var(--forest)}.btn{border:0;border-radius:12px;background:var(--brown);color:white;padding:15px 19px;font-weight:750;min-height:50px;box-shadow:0 3px 8px #65391618}.btn.alt{background:var(--forest);color:white}.btn.ghost{background:#f0f2ef;color:var(--forest);box-shadow:none}.btn:disabled{opacity:.45;cursor:not-allowed}.row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.row .btn{flex:1}.pill{display:inline-block;background:#e8eee9;color:var(--forest);border-radius:99px;padding:7px 12px;font-size:12px;font-weight:700}.bar{height:8px;background:#dfe8e2;border-radius:99px;overflow:hidden}.bar>div{height:100%;background:#b77c4d;transition:width .2s}.progress{display:flex;justify-content:space-between;align-items:center;gap:10px;margin:4px 0 13px}.progress span{font-size:13px;font-weight:700}.confidence{display:flex;gap:8px;flex-wrap:wrap}.confidence label{background:#fff;border:1px solid #e1e6e1;border-radius:9px;padding:9px 11px;font-size:13px}.confidence input{accent-color:var(--forest)}details{border:1px solid #e3e7e3;border-radius:11px;margin:10px 0;padding:12px;background:#fff}summary{cursor:pointer;font-weight:700}.logic{background:#edf4ee;border-left:4px solid var(--forest);padding:16px;border-radius:12px;margin:12px 0}.logic h3{margin:0 0 8px;color:var(--forest);font-size:15px}.logic p{margin:6px 0}.mistake{background:#faf2e8;border-left:4px solid #b77c4d;padding:15px;border-radius:11px;margin:12px 0}.correct{color:#186d44}.wrong{color:#a62e2e}.score{font-size:52px;color:var(--forest);font-weight:900}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(135px,1fr));gap:10px}.stat{background:#f3f6f3;padding:15px;border-radius:12px;font-size:14px;font-weight:700}.stat strong{display:block;font-size:23px}.review-item{padding:17px 0;border-bottom:1px solid #e4e8e4}.review-item:last-child{border:0}.footer{font-size:11px;color:#718177;border-top:1px solid #e7ebe7;padding:20px 0;margin-top:35px}.nav{display:flex;gap:8px;margin-top:20px}.nav button{flex:1;border:0;border-radius:10px;padding:12px 6px;background:#edf1ed;color:var(--forest);font-weight:700}.nav button.active{background:var(--forest);color:#fff}.hint{background:#fff8ed;border:1px solid #eadbc5;border-radius:12px;padding:12px;font-size:13px}.check{color:var(--forest);font-weight:800}@media(min-width:700px){.wrap{padding:32px 20px 80px}.hero{padding:42px}.question-card{padding:28px}.answers-card{padding:24px}}@media(max-width:390px){.brand{font-size:22px}.top .tag{font-size:10px}.wrap{padding:16px 12px 50px}.hero{padding:24px 18px}.card{padding:16px}}

/* v0.3 provisional palette: align to WOO master after approval. */
:root{--forest:#103D2C;--brown:#965A32;--answers:#E8ECE9}
h1,h2,h3{color:var(--forest)}.hero h1{color:#fff}.answers-card,.option{background:var(--answers)}.answers-card{padding:0;background:transparent}.option{font-size:16px;min-height:62px;border:2px solid transparent}.option.sel{border-color:var(--forest);background:#d7e5dc}.question-card{border:1px solid #e5e9e5;border-left:5px solid var(--forest)}.image-area{background:#fff;border:1px solid #e5e9e5;border-radius:16px;padding:16px;margin-bottom:16px;text-align:center}.image-area svg{width:112px;height:112px}.answers-card h3{font-size:13px;letter-spacing:1px}.confidence label{min-height:44px;display:flex;align-items:center}.source{font-size:12px;overflow-wrap:anywhere}.review-item h3{font-size:20px}.layer{padding:16px;border-radius:12px;background:#f5f7f5;margin:12px 0}.review-options{padding-left:20px;line-height:1.65}.review-options .correct{font-weight:750}.correct{color:#14653c}.wrong{color:#ac2424}.storage-warning{background:#fff1e9;border:1px solid #965A32;padding:12px;border-radius:10px}.history-list button{display:block;width:100%;text-align:left;margin:8px 0}.badge{font-size:11px;color:#52645a;letter-spacing:.7px}a{color:var(--forest)}.hero .btn{width:100%}.confidence{display:grid;grid-template-columns:repeat(3,1fr)}.confidence label{padding:10px 4px;justify-content:center}.confidence input{margin:0 5px 0 0}.row .btn{min-width:120px}.footer{padding-bottom:28px}.review-item{scroll-margin-top:20px}.stat small{line-height:1.5}main:focus{outline:0}@media(prefers-reduced-motion:reduce){*{transition:none!important}}@media(max-width:390px){.top{padding:16px 12px}.top .tag{padding:6px}.brand{font-size:22px}.brand small{letter-spacing:1.7px}.question-card{padding:19px 16px}.option{padding:12px}.review-item h3{font-size:18px}}

select{display:block;width:100%;min-height:44px;margin-top:8px;border:1px solid #9daea4;border-radius:8px;background:white;padding:8px;color:#103D2C}.home-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px}.home-actions .btn{font-size:15px;padding:14px 10px}.metric{font-variant-numeric:tabular-nums}.review-item h3{overflow-wrap:anywhere}
/* V0.4: touch-friendly numbered navigation */
.question-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:8px;margin:12px 0 4px}.qnum{min-height:46px;border:1px solid #9baaa0;background:#fff;border-radius:9px;color:#103d2c;font-weight:700;cursor:pointer}.qnum.answered{background:#e8ece9;border-color:#103d2c}.qnum.current{background:#103d2c;color:#fff;border:3px solid #965a32}.qnum:focus-visible{outline:3px solid #965a32;outline-offset:2px}.exam-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:14px}.exam-actions .btn{min-height:46px}.exam-actions .btn:disabled{opacity:.4;cursor:not-allowed}@media(max-width:390px){.question-grid{grid-template-columns:repeat(5,minmax(0,1fr));gap:6px}}