:root{color-scheme:light dark;--bg:#f8f9f7;--card:#fff;--ink:#202d29;--muted:#76817b;--line:#e4e8e3;--green:#286750;--tint:#eaf2ed;--red:#ab453f;--redbg:#fbefed;--scale:1;font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Yu Gothic",sans-serif;font-size:calc(16px * var(--scale));background:var(--bg);color:var(--ink)}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}a{color:inherit;text-decoration:none}button:disabled{opacity:.45;cursor:default}.app{max-width:940px;margin:auto;padding:env(safe-area-inset-top) 28px calc(100px + env(safe-area-inset-bottom))}header{height:100px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;gap:12px;align-items:center;font-size:1.13rem;font-weight:700;letter-spacing:.06em}.brand-icon{display:grid;place-items:center;background:var(--green);color:white;border-radius:12px;width:44px;height:44px;font-family:serif;font-size:1.45rem}.brand small{display:block;font-size:.62rem;color:var(--muted);font-weight:400;letter-spacing:.09em;margin-top:5px}.settings-link{font-size:.8rem;color:var(--muted);padding:14px}main{padding-top:34px}h1{font-size:1.65rem;letter-spacing:.025em;line-height:1.5;margin:7px 0 9px}h2{font-size:1.05rem;margin:0 0 18px}h3{font-size:1rem}.eyebrow{font-size:.68rem;letter-spacing:.16em;color:var(--green);font-weight:700}.sub{color:var(--muted);font-size:.83rem;line-height:1.8}.heading{display:flex;align-items:start;justify-content:space-between;gap:12px;margin-bottom:26px}.pill{display:inline-block;border:1px solid var(--line);border-radius:30px;padding:7px 12px;font-size:.7rem;color:var(--muted);white-space:nowrap}.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:24px;margin-bottom:20px}.overview{display:grid;grid-template-columns:1.7fr 1fr;gap:30px}.big-number{font-size:2.3rem;font-weight:650;letter-spacing:-.04em}.big-number small{font-size:.85rem;font-weight:400;color:var(--muted);letter-spacing:0}.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:22px}.metric small{display:block;font-size:.7rem;color:var(--muted);margin-bottom:8px}.metric strong{font-size:1.15rem;font-weight:600}.progress{height:7px;background:var(--line);border-radius:20px;overflow:hidden;margin:16px 0 9px}.progress>i{display:block;height:100%;background:var(--green);border-radius:20px}.progress-label{display:flex;justify-content:space-between;font-size:.72rem;color:var(--muted)}.accuracy{border-left:1px solid var(--line);padding-left:30px;display:flex;flex-direction:column;justify-content:center;align-items:center}.accuracy small{font-size:.72rem;color:var(--muted)}.accuracy .big-number{margin:10px 0}.primary{border:0;border-radius:12px;background:var(--green);color:#fff;padding:17px 22px;min-height:52px;font-weight:600;display:inline-flex;justify-content:center;align-items:center;gap:14px}.resume{display:flex;justify-content:space-between;width:100%;text-align:left;margin:3px 0 27px;padding:22px 24px}.resume small{display:block;opacity:.7;font-weight:400;font-size:.72rem;margin-top:7px}.resume .arrow{font-size:1.5rem;font-weight:300}.section-heading{display:flex;align-items:baseline;justify-content:space-between;margin:26px 0 14px}.section-heading h2{margin:0}.section-heading small{font-size:.67rem;color:var(--muted)}.menu-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.menu{display:flex;gap:16px;align-items:center;text-align:left;width:100%;background:var(--card);border:1px solid var(--line);border-radius:13px;padding:21px 19px;color:var(--ink);min-height:95px}.menu-icon{width:40px;height:40px;background:var(--tint);color:var(--green);border-radius:11px;display:grid;place-items:center;font-size:1.3rem;flex-shrink:0}.menu b{display:block;font-size:.9rem;font-weight:600}.menu small{display:block;font-size:.67rem;color:var(--muted);margin-top:6px}.menu .chev{margin-left:auto;color:var(--muted)}.offline{display:flex;align-items:center;gap:12px;margin-top:24px;background:var(--tint);border:1px solid var(--line);border-radius:12px;padding:17px;font-size:.75rem;line-height:1.6}.offline b{display:block;color:var(--green)}.offline button{margin-left:auto;flex-shrink:0}.offline.pending{background:var(--card)}.quiet,.secondary{background:var(--card);color:var(--ink);border:1px solid var(--line);border-radius:10px;padding:12px 16px;min-height:44px}.quiet{padding:8px 12px;font-size:.74rem}.text-link{color:var(--green);text-decoration:underline;text-underline-offset:3px}.footnote{font-size:.68rem;line-height:1.9;color:var(--muted);margin:17px 2px}.warning{background:var(--redbg);color:var(--red);border:1px solid #ab453f33;padding:15px;border-radius:10px;font-size:.8rem;line-height:1.8;margin:15px 0}nav{position:fixed;bottom:0;left:0;right:0;display:flex;justify-content:center;gap:0;padding:10px 12px calc(10px + env(safe-area-inset-bottom));background:var(--card);border-top:1px solid var(--line);z-index:10}nav a{width:160px;text-align:center;color:var(--muted);font-size:.64rem;display:flex;flex-direction:column;gap:4px;padding:3px}nav a span{font-size:1.45rem;line-height:1.1}nav a.active{color:var(--green);font-weight:700}#notice{position:fixed;bottom:100px;left:50%;transform:translateX(-50%);width:min(90%,600px);background:var(--ink);color:var(--card);padding:16px 20px;border-radius:12px;font-size:.8rem;z-index:30;display:none}#notice.visible{display:block}.study-top{display:flex;justify-content:space-between;align-items:center;gap:12px}.study-meta{font-size:.75rem;color:var(--muted);line-height:1.8}.question{font-size:1.28rem;line-height:2;white-space:pre-wrap;overflow-wrap:anywhere;margin:30px 0 35px;min-height:130px}.question-card{margin-top:20px}.answer-buttons{display:grid;grid-template-columns:1fr 1fr;gap:12px}.answer-buttons button{border:1px solid var(--line);background:var(--card);color:var(--green);font-weight:650;padding:20px 10px;border-radius:13px;font-size:1rem;min-height:85px}.answer-buttons button:last-child{color:var(--red)}.answer-buttons span{font-size:1.9rem;vertical-align:middle;margin-right:8px}.result{border-top:1px solid var(--line);margin-top:24px;padding-top:24px}.result h2{color:var(--green)}.result.wrong h2{color:var(--red)}.explanation{white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.95;font-size:1rem}.source-links{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px;font-size:.72rem;color:var(--muted)}.full{width:100%;margin-top:20px}.filters{display:grid;grid-template-columns:1fr 1fr;gap:15px}.filters .wide{grid-column:1/-1}label{display:block;font-size:.75rem;color:var(--muted)}input,select{width:100%;background:var(--card);color:var(--ink);border:1px solid var(--line);border-radius:9px;padding:13px;margin-top:7px;min-height:46px}input[type=checkbox]{width:auto;min-height:0}.row{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:17px 0;border-bottom:1px solid var(--line)}.row:last-child{border-bottom:0}.row .sub{font-size:.72rem}.results-list{margin-top:20px}.question-row{display:block;width:100%;text-align:left;border:0;border-bottom:1px solid var(--line);background:transparent;color:var(--ink);padding:19px 0}.question-row small{font-size:.7rem;color:var(--muted)}.question-row p{line-height:1.8;font-size:.9rem;margin:8px 0}.badge{background:var(--tint);color:var(--green);border-radius:4px;padding:3px 6px;font-size:.65rem}.table-scroll{overflow:auto}table{width:100%;border-collapse:collapse;font-size:.78rem;white-space:nowrap}td,th{padding:15px 9px;border-bottom:1px solid var(--line);text-align:right}td:first-child,th:first-child{text-align:left}th{font-weight:500;color:var(--muted)}details summary{cursor:pointer;padding:13px 0;font-size:.83rem}.history{font-size:.75rem;line-height:2;max-height:300px;overflow:auto}.empty{text-align:center;color:var(--muted);padding:40px 15px;line-height:1.9}.actions{display:flex;gap:10px;flex-wrap:wrap}.settings-section{margin:25px 0}.danger{color:var(--red)}.loading{padding:45px 0;text-align:center;color:var(--muted)}button:focus-visible,a:focus-visible{outline:3px solid #8bb9a0;outline-offset:3px}@media(min-width:800px){main{padding:40px 24px}.menu-grid{grid-template-columns:repeat(3,1fr)}.menu{padding:20px 14px;gap:11px}.menu-icon{width:34px;height:36px}.menu b{font-size:.8rem}.menu small{font-size:.6rem}.overview{padding:29px}.question{min-height:200px}}@media(max-width:500px){.app{padding-left:18px;padding-right:18px}header{height:85px}main{padding-top:27px}.card{padding:20px}.overview{gap:15px;grid-template-columns:1.75fr 1fr}.accuracy{padding-left:15px}.big-number{font-size:1.9rem}.metrics{gap:10px}.metric strong{font-size:1rem}.metric small{font-size:.63rem}.menu{gap:12px;padding:17px 13px}.menu b{font-size:.8rem}.menu small{font-size:.62rem}.menu-icon{width:33px;height:36px}.heading{margin-bottom:20px}.heading .pill{display:none}.question{font-size:1.13rem}.filters{gap:12px}h1{font-size:1.45rem}}@media(prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#141b18;--card:#1c2520;--ink:#e5ece6;--muted:#9aa89e;--line:#334137;--green:#8bc4a6;--tint:#253b2e;--red:#f0a09a;--redbg:#392623}.primary{color:#10291c}.brand-icon{color:#10291c}}:root[data-theme=dark]{--bg:#141b18;--card:#1c2520;--ink:#e5ece6;--muted:#9aa89e;--line:#334137;--green:#8bc4a6;--tint:#253b2e;--red:#f0a09a;--redbg:#392623}:root[data-theme=dark] .primary,:root[data-theme=dark] .brand-icon{color:#10291c}

/* Answer feedback is transform/opacity only, outside the rerendered question. */
.answer-feedback{position:fixed;inset:0;display:grid;place-items:center;z-index:50;pointer-events:none}
.answer-feedback-panel{display:flex;flex-direction:column;align-items:center;gap:14px;padding:28px 42px;border-radius:24px;background:var(--card);box-shadow:0 8px 36px #0002;color:#21824e;animation:answer-pop .7s ease-out both}
.answer-feedback.is-wrong .answer-feedback-panel{color:#cc3e38}
.answer-feedback-mark{position:relative;display:block;width:112px;height:112px}
.is-correct .answer-feedback-mark{border:11px solid currentColor;border-radius:50%}
.is-wrong .answer-feedback-mark:before,.is-wrong .answer-feedback-mark:after{content:"";position:absolute;top:50%;left:0;width:112px;height:11px;background:currentColor;border-radius:8px;transform:translateY(-50%) rotate(45deg)}
.is-wrong .answer-feedback-mark:after{transform:translateY(-50%) rotate(-45deg)}
.answer-feedback strong{font-size:1.35rem;font-weight:750}
@keyframes answer-pop{0%{opacity:0;transform:scale(.78)}22%{opacity:1;transform:scale(1.04)}40%,70%{opacity:1;transform:scale(1)}100%{opacity:0;transform:scale(1)}}
@media(prefers-reduced-motion:reduce){.answer-feedback-panel{animation:none}}
.condition-form fieldset{border:0;padding:0;margin:0 0 25px;min-width:0}
.condition-form legend{font-weight:650;font-size:.95rem;margin-bottom:12px}
.condition-options{display:flex;flex-wrap:wrap;gap:10px}
.condition-choice{display:flex;align-items:center;gap:9px;padding:12px 15px;min-height:48px;border:1px solid var(--line);border-radius:10px;background:var(--card);color:var(--ink);font-size:.83rem;cursor:pointer}
.condition-choice:has(input:checked){border-color:var(--green);background:var(--tint)}
.condition-choice input{width:18px;height:18px;min-height:0;margin:0;accent-color:var(--green)}
.condition-count{font-size:2.1rem;font-weight:700;color:var(--green)}
.condition-summary{display:flex;gap:16px;align-items:center;justify-content:space-between;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:20px}
.condition-summary .primary{min-width:150px}
.condition-empty{color:var(--muted);line-height:1.8;font-size:.83rem;margin-top:15px}
.condition-base{margin-bottom:20px;padding:12px 14px;border-radius:10px;background:var(--tint);font-size:.78rem;line-height:1.8}