:root{--ink:#24323a;--muted:#718087;--cream:#fffaf0;--paper:#fffdf8;--line:#eee5d5;--orange:#ec8a40;--gold:#f4ba5a;--green:#628c69;--green-soft:#eaf4e7;--red:#c66a5f;--red-soft:#fae8e3;--shadow:0 24px 70px #7e62401a}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:var(--cream);color:var(--ink);font-family:Arial,sans-serif;overflow-x:hidden}.background-shape{position:fixed;border-radius:50%;pointer-events:none;z-index:-1}.shape-one{width:420px;height:420px;background:#f7d27c33;top:-180px;right:-120px}.shape-two{width:360px;height:360px;background:#bbd4ba2e;bottom:-180px;left:-100px}.app-shell{width:min(1080px,calc(100% - 42px));margin:auto;padding:30px 0 28px}.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:60px}.brand{display:flex;gap:11px;align-items:center;color:var(--ink);text-decoration:none}.brand-avatar{width:38px;height:38px;object-fit:cover;border-radius:13px}.brand strong{display:block;font-weight:800;font-size:18px}.brand small{color:var(--muted);font-size:11px;display:block;margin-top:1px}.session-stats{display:flex;align-items:center;gap:14px}.session-stats>div:first-child{padding-right:7px}.stat-label{font-size:10px;color:var(--muted);text-transform:uppercase;letter-spacing:1px;margin-right:7px}.stat-muted{color:#a4aaa7;font-size:13px}.score-pill{display:flex;gap:6px;align-items:center;border-radius:20px;padding:7px 11px;font-size:13px}.score-good{color:var(--green);background:var(--green-soft)}.score-bad{color:var(--red);background:var(--red-soft)}.hero{display:flex;justify-content:space-between;align-items:center;margin-bottom:44px}.eyebrow{text-transform:uppercase;letter-spacing:2px;color:var(--orange);font-size:10px;font-weight:700;margin:0 0 13px}.hero h1{font-weight:800;font-size:clamp(38px,5vw,58px);line-height:1.04;letter-spacing:-2.5px;margin:0;color:#27363d}.hero h1 em{font-style:normal;color:var(--orange)}.hero-subtitle{color:var(--muted);font-size:15px;margin:19px 0 0;max-width:410px;line-height:1.6}.capy-card{height:180px;width:180px;background:#f4d99c;border-radius:50%;position:relative;margin-right:38px;overflow:hidden}.capy-image{width:100%;height:100%;object-fit:cover}.leaf{position:absolute;color:#668e68;font-size:17px}.leaf-one{left:23px;top:28px}.leaf-two{right:40px;bottom:25px}.quiz-card,.setup-card{background:var(--paper);border:1px solid var(--line);border-radius:24px;padding:31px 42px 35px;box-shadow:var(--shadow);max-width:830px;margin:0 auto}.setup-intro h2{font-size:27px;letter-spacing:-.7px;margin:8px 0}.setup-intro p{color:var(--muted);font-size:14px;margin:0 0 25px}.setup-kicker{color:var(--orange);text-transform:uppercase;letter-spacing:1.5px;font-size:10px;font-weight:700}.setup-grid{display:grid;grid-template-columns:1fr 1.4fr;gap:35px}fieldset{border:0;padding:0;margin:0}legend{font-weight:700;font-size:13px;margin-bottom:13px}.select-label,.number-input-label{display:flex;flex-direction:column;gap:8px;color:var(--muted);font-size:12px}.select-label select,.number-input-label input{width:100%;border:1px solid var(--line);border-radius:10px;background:#fff;padding:12px 13px;color:var(--ink);font:bold 15px Arial,sans-serif;outline:none}.select-label select:focus,.number-input-label input:focus{border-color:var(--orange);box-shadow:0 0 0 3px #ec8a4020}.input-help{display:block;color:#a49b8d;font-size:11px;line-height:1.45;margin-top:9px}.difficulty-options{display:flex;gap:8px;flex-wrap:wrap}.check-choice{display:flex;align-items:center;gap:7px;border:1px solid var(--line);border-radius:10px;padding:10px 11px;font-size:12px;cursor:pointer}.check-choice input{position:absolute;opacity:0}.checkmark{width:18px;height:18px;border:1px solid #d8cdbc;border-radius:5px;display:grid;place-items:center;color:transparent}.check-choice input:checked~.checkmark{background:var(--orange);border-color:var(--orange);color:#fff}.setup-hint{color:var(--muted);font-size:12px;margin:24px 0 13px}.start-button{width:100%}.quiz-meta{display:flex;justify-content:space-between;align-items:center;margin-bottom:17px}.topic-wrap{display:flex;align-items:center;gap:9px;font-weight:600;font-size:13px}.topic-dot{width:8px;height:8px;background:var(--orange);border-radius:50%}.difficulty{font-size:11px;text-transform:uppercase;letter-spacing:1px;border-radius:15px;padding:7px 12px;background:#f6eee1;color:#a47a4c;font-weight:700}.progress-track{height:4px;background:#f2eadc;border-radius:10px;margin-bottom:29px}.progress-track div{height:100%;background:var(--gold);width:0;border-radius:10px;transition:width .3s ease}.question-number{color:#b4a993;font-size:10px;font-weight:700;letter-spacing:1.6px;margin:0 0 10px}.quiz-card h2{font-weight:700;font-size:clamp(20px,3vw,27px);line-height:1.35;letter-spacing:-.7px;margin:0 0 25px;max-width:700px}.options{display:grid;gap:11px}.option{display:flex;align-items:flex-start;gap:13px;width:100%;border:1px solid #e9e3d8;border-radius:13px;padding:15px 16px;background:#fff;cursor:pointer;text-align:left;color:var(--ink);font:500 14px/1.45 Arial,sans-serif;transition:all .18s}.option:hover:not(:disabled){border-color:#e6af6d;background:#fffaf1;transform:translateY(-1px)}.option.selected{border-color:var(--orange);background:#fff5e7;box-shadow:0 0 0 2px #ec8a4020}.option.correct{border-color:var(--green);background:var(--green-soft)}.option.incorrect{border-color:var(--red);background:var(--red-soft)}.option:disabled{cursor:default}.option-letter{flex:none;width:25px;height:25px;border:1px solid #ddd4c5;border-radius:50%;display:grid;place-items:center;color:#a49783;font-size:12px;font-weight:700}.selected .option-letter{background:var(--orange);border-color:var(--orange);color:#fff}.correct .option-letter{background:var(--green);border-color:var(--green);color:#fff}.incorrect .option-letter{background:var(--red);border-color:var(--red);color:#fff}.actions{display:flex;justify-content:space-between;align-items:center;margin-top:27px}.action-right{display:flex;align-items:center;gap:12px}.button{border:0;border-radius:12px;padding:13px 19px;font:bold 13px Arial,sans-serif;cursor:pointer;transition:transform .15s,box-shadow .15s}.button:hover:not(:disabled){transform:translateY(-1px)}.button:disabled{opacity:.4;cursor:not-allowed}.button-primary{background:var(--orange);color:#fff;box-shadow:0 7px 16px #ec8a4033}.button-ghost{color:var(--muted);background:transparent;padding-left:0}.button-ghost span,.button-primary span,.button-next span{font-size:17px;margin-left:8px}.feedback{margin-top:27px;padding-top:24px;border-top:1px solid var(--line)}.feedback-title{display:flex;align-items:center;gap:9px;font-size:17px}.feedback-title span{width:27px;height:27px;border-radius:50%;display:grid;place-items:center;font-weight:800}.feedback.is-correct .feedback-title{color:var(--green)}.feedback.is-correct .feedback-title span{background:var(--green-soft)}.feedback.is-wrong .feedback-title{color:var(--red)}.feedback.is-wrong .feedback-title span{background:var(--red-soft)}.feedback.is-skipped .feedback-title{color:#a47a4c}.feedback.is-skipped .feedback-title span{background:#f6eee1}.feedback p{color:#536168;font-size:14px;line-height:1.6;margin:11px 0 16px}.source-box{display:flex;gap:11px;align-items:center;background:#fbf5e9;border-radius:11px;padding:12px 14px;margin-bottom:20px}.source-icon{font-size:23px;color:var(--gold)}.source-box small{display:block;color:#a59170;font-size:10px;text-transform:uppercase;letter-spacing:1px;margin-bottom:3px}.source-box strong{font-size:13px}.button-next{background:#263941;color:#fff}.feedback[hidden],.setup-card[hidden],.quiz-card[hidden]{display:none}.options.shake{animation:shake .35s}@keyframes shake{25%{transform:translateX(-5px)}75%{transform:translateX(5px)}}footer{display:flex;justify-content:space-between;color:#a9a39a;font-size:11px;margin:23px 5px 0}@media(max-width:650px){.app-shell{width:calc(100% - 28px);padding-top:20px}.topbar{margin-bottom:38px}.session-stats{gap:7px}.stat-label{display:none}.score-pill{padding:6px 8px}.hero{margin-bottom:30px}.hero-subtitle{font-size:13px}.capy-card{display:none}.setup-card,.quiz-card{padding:23px 20px 25px;border-radius:19px}.setup-grid{grid-template-columns:1fr;gap:22px}.quiz-card h2{font-size:21px}.actions{align-items:flex-start;gap:10px}.action-right{flex-direction:column;align-items:flex-end;gap:3px}.button{padding:12px 13px}.button-ghost{font-size:12px}footer{font-size:10px;gap:10px;line-height:1.4}footer span:last-child{text-align:right}}