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h2{font-size:23px;margin:12px 0 8px}.result-heading p{font-size:13px;color:var(--muted)}.score-grid{display:grid;grid-template-columns:repeat(4,1fr);margin-top:25px;padding-top:22px;border-top:1px solid #d6e1ca;text-align:center}.score-grid>div+div{border-left:1px solid #d6e1ca}.score-grid strong{display:block;font-size:32px;font-weight:500;font-family:Georgia,serif;line-height:1.3}.score-grid strong small{font-size:17px}.score-grid span{font-size:11px;color:var(--muted)}.good-text{color:var(--green)}.bad-text{color:var(--red)}.status{font-size:11px;border-radius:5px;padding:2px 6px;white-space:nowrap}.good{color:var(--green);background:#eff5e9}.bad{color:var(--red);background:#fbece7}.question.is-wrong{border-color:#d29b90;border-left:4px solid #b96151}.question.is-correct{border-color:#ccd9c1}.is-correct .option,.is-wrong .option{cursor:default}.option input:disabled{cursor:default}.option.correct-option{border-color:#9eb58b;background:#f0f5e9}.option.correct-option 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@media(max-width:360px){main{padding:0 15px}.header-inner{padding:0 15px}.hero-art{opacity:.5;right:-7px;transform:scale(.48)}.hero-copy>p{max-width:250px}.book-card{grid-template-columns:100px 1fr}.card-content{padding:14px 11px 0}.card-content h3{font-size:15px}.library-tools{flex-wrap:wrap}.search{width:100%}.hero h1{font-size:34px}.card-bottom{font-size:8px}.section-heading h2{max-width:200px;font-size:18px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}
@media(max-width:600px){.hero{overflow:hidden}.hero-art{right:0;top:8px}.hero-art .note-paper{min-width:225px}.note-title{font-size:21px}.hero-copy>p{max-width:260px}}
/* One-question mode: existing palette and question cards, one navigation surface. */
.single-quiz{padding-bottom:110px;padding-bottom:calc(110px + env(safe-area-inset-bottom,0px))}.quiz-top{position:sticky;top:0;z-index:3;background:var(--paper);padding:12px 0 15px;border-bottom:1px solid var(--line);margin-bottom:16px}.quiz-top:focus{outline:none}.quiz-title-row{display:flex;align-items:center;justify-content:space-between;gap:12px}.quiz-title-row h1{font-size:23px;overflow-wrap:anywhere}.quiz-title-row .button{flex-shrink:0;padding:9px 14px;min-height:44px}.quiz-progress{display:flex;justify-content:space-between;gap:10px;font-size:12px;color:var(--muted);margin-top:12px}.quiz-message,.storage-notice{font-size:13px;line-height:1.7;margin:12px 0;color:var(--orange);overflow-wrap:anywhere}.quiz-message:empty,.storage-notice:empty{display:none}.quiz-nav{position:fixed;bottom:0;left:50%;transform:translateX(-50%);width:100%;max-width:800px;z-index:4;display:flex;gap:12px;padding:12px 20px 16px;padding-bottom:calc(16px + env(safe-area-inset-bottom,0px));background:var(--paper);border-top:1px solid var(--line);box-shadow:0 -5px 20px #263e3506}.quiz-nav .button{flex:1;min-width:0;padding:13px 10px}.single-quiz button:disabled{opacity:.45;cursor:default}.review-tools{display:flex;gap:10px;align-items:center;justify-content:space-between;margin:15px 0}.review-tools .button{padding:9px 14px;min-height:44px}.summary-actions{display:flex;flex-wrap:wrap;gap:12px}.summary-actions .button{flex:1 1 220px}.quiz-backdrop{position:fixed;inset:0;z-index:30;background:#243c3559;display:flex;align-items:center;justify-content:center;padding:20px;padding-top:calc(20px + env(safe-area-inset-top,0px));padding-bottom:calc(20px + env(safe-area-inset-bottom,0px))}.quiz-dialog{background:var(--paper);border:1px solid var(--line);border-radius:18px;padding:24px;width:100%;max-width:500px;max-height:85vh;max-height:85dvh;overflow-y:auto;overscroll-behavior:contain;box-shadow:0 20px 70px #263e3526}.dialog-heading{display:flex;align-items:center;justify-content:space-between;gap:12px}.quiz-dialog h2{font-size:21px}.dialog-close{width:44px;min-height:44px;border-radius:50%;background:var(--soft);font-size:25px}.quiz-dialog p{font-size:14px;line-height:1.8;margin:12px 0;color:var(--muted)}.card-legend{display:flex;flex-wrap:wrap;gap:8px 16px;font-size:12px;color:var(--muted);margin:16px 0}.answer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(44px,1fr));gap:10px;margin:18px 0}.answer-cell{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:52px;min-width:0;border:1px solid #d2dccb;border-radius:9px;background:white;font-size:17px}.answer-cell small{font-size:10px;line-height:1.2}.answer-cell.answered,.answer-cell.correct{background:#e7efdf;color:var(--green)}.answer-cell.wrong{background:#faeae5;color:var(--red);border-color:#d4a095}.answer-cell.current{outline:2px solid var(--ink);outline-offset:2px}.dialog-actions{display:flex;flex-direction:column;gap:10px;margin-top:20px}.dialog-actions .button{width:100%}.reset-dialog p{margin:20px 0}.single-quiz .question-id{overflow-wrap:anywhere;min-width:0}.single-quiz .answer-line strong{overflow-wrap:anywhere}.single-quiz .question{margin-top:8px}
@media(max-width:600px){.quiz-title-row h1{font-size:20px}.quiz-top{padding-top:10px}.quiz-backdrop{padding-left:16px;padding-right:16px}.quiz-dialog{padding:18px}.answer-grid{gap:9px}.single-quiz .breadcrumb{padding:10px 0}.quiz-title-row .button{font-size:12px}.quiz-progress{font-size:12px}}
.access-summary{display:flex;align-items:center;justify-content:space-between;gap:16px;margin:0 0 24px;padding:15px 18px;border:1px solid #d5dfca;border-radius:12px;background:#f0f5e9;color:var(--green)}
.access-summary strong{font-size:14px}.access-summary span{font-size:12px;color:var(--muted)}.access-summary.is-full{background:#edf3ea}
.chapter-row.is-locked{background:linear-gradient(90deg,transparent,#f4f1e8 50%,transparent)}.chapter-row.is-locked .chapter-number{color:#c2bca9}
.access-lock{text-align:center;background:#fff;border:1px solid #d9e2d2;border-radius:18px;padding:38px 28px;margin:14px 0 24px}.access-lock-mark{display:flex;align-items:center;justify-content:center;width:58px;height:58px;margin:0 auto 18px;border-radius:50%;background:#edf2e8;color:var(--green);font-size:25px}.access-lock h2{font-size:25px;margin:10px 0}.access-lock>p{color:var(--muted);font-size:14px}.access-unlock{max-width:440px;margin:25px auto 0;padding:18px;border-radius:12px;background:var(--soft);border:1px solid #cdd9c4;display:grid;gap:10px;text-align:left}.access-unlock label{font-size:13px;font-weight:700;color:var(--ink)}.access-unlock input{width:100%;min-height:48px;border:1px solid #c9d3c3;border-radius:10px;background:#fff;color:var(--ink);font:inherit;padding:10px 13px}.access-unlock input:focus{outline:3px solid rgba(89,112,73,.18);border-color:var(--green)}.access-unlock .button{width:100%;margin-top:2px}.access-unlock p{font-size:12px;color:var(--muted);margin:0;text-align:center}.access-unlock.compact{width:100%;margin:10px 0 0}.answer-cell.locked{background:#f2f0e9;color:#999282;border-style:dashed}.answer-cell.locked:hover{background:#ece8dd}
@media(max-width:600px){.access-summary{align-items:flex-start;flex-direction:column;gap:4px;margin-bottom:18px}.access-lock{padding:30px 18px}.access-lock h2{font-size:22px}.access-lock .button{width:100%}}

/* Imported exam formatting; preserve the existing palette and navigation. */
.ordering-slot{display:inline-block;width:3em;min-width:3em;text-align:center;border-bottom:1px solid currentColor;line-height:1.3;margin:0 .18em;white-space:nowrap}.question-prompt u,.option-text u{text-decoration-thickness:1px;text-underline-offset:.18em}.shared-passage{margin:0 0 20px}.shared-passage summary{cursor:pointer;min-height:44px;padding:10px 12px;color:var(--green);background:var(--soft);border-radius:8px}.shared-passage .passage{margin-top:12px;white-space:pre-wrap;overflow-wrap:anywhere}

/* Past-paper collection pages reuse the existing workbook language. */
.section-label{flex-basis:100%;display:block;color:var(--ink);font-size:13px;font-weight:650;letter-spacing:.04em;margin-bottom:4px}.session-list .chapter-info h3,.practice-group-list .chapter-info h3{font-size:19px}.session-intro .book-cover{transform:rotate(-5deg)}
@media(max-width:600px){.section-label{font-size:12px}.session-list .chapter-info h3,.practice-group-list .chapter-info h3{font-size:17px}}