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/* ---- Visual chapter hero ---- */
.chapter-hero{border-radius:18px;padding:30px 32px 0;margin-bottom:26px;background:linear-gradient(135deg,var(--soft),#ffffff 78%);border:1px solid #e8ece5;position:relative;overflow:hidden}.chapter-hero:before{content:"";position:absolute;right:-70px;top:-90px;width:290px;height:290px;border-radius:50%;background:var(--accent);opacity:.09}.chapter-hero:after{content:"";position:absolute;right:60px;top:-40px;width:160px;height:160px;border-radius:50%;border:1px solid var(--accent);opacity:.22}.chapter-hero-inner{display:flex;align-items:flex-start;gap:20px;position:relative;z-index:1;flex-wrap:wrap}.chapter-hero-icon{display:grid;place-items:center;width:64px;height:64px;flex:none;border-radius:17px;background:#fff;color:var(--accent);font-size:34px;box-shadow:0 8px 22px #29442b14}.chapter-hero-inner>div{flex:1;min-width:220px}.chapter-hero h1{margin:6px 0 8px}.chapter-hero .button{align-self:center}.chapter-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:#e8ece5;border-radius:12px 12px 0 0;margin-top:24px;overflow:hidden;position:relative;z-index:1}.chapter-stat{background:#fff;padding:14px 16px}.chapter-stat strong{display:block;font:800 20px Manrope,sans-serif;color:var(--accent);letter-spacing:-.6px}.chapter-stat span{font-size:10px;font-weight:700;letter-spacing:.8px;text-transform:uppercase;color:#96a099}
/* ---- Visual note cards ---- */
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/* ---- Real exam paper ---- */
.exam-shell{max-width:900px}.exam-cover{border:2px solid #2f3a33;border-radius:14px;background:#fff;padding:30px 34px;margin-bottom:22px}.exam-cover-top{display:flex;align-items:center;gap:15px;border-bottom:2px solid #2f3a33;padding-bottom:18px;margin-bottom:22px}.exam-crest{display:grid;place-items:center;width:54px;height:54px;border-radius:14px;background:#eef4ec;font-size:28px;color:#3f7d4f;flex:none}.exam-university{display:block;font:800 15px Manrope,sans-serif;letter-spacing:.4px;color:#222b26}.exam-faculty{display:block;font-size:11px;color:#7d8981;margin-top:3px}.exam-cover-main h1{font-size:26px;letter-spacing:-1px;margin:8px 0 10px;text-transform:uppercase}.exam-cover-main .lead{font-size:12.5px}.exam-meta{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:#dfe5df;border:1px solid #dfe5df;border-radius:10px;overflow:hidden;margin:22px 0}.exam-meta>div{background:#fafbf9;padding:12px 14px}.exam-meta dt{font-size:9px;font-weight:800;letter-spacing:1px;color:#98a29a}.exam-meta dd{margin:6px 0 0;font-size:13px;font-weight:800;color:#2b352f}.exam-instructions{background:#f5f8f3;border-radius:11px;padding:17px 20px;font-size:12px;color:#4c5a51;line-height:1.7}.exam-instructions strong{display:block;font-size:10px;letter-spacing:1.2px;color:#3f7d4f;margin-bottom:9px}.exam-instructions ol{margin:0;padding-left:19px}.exam-toolbar{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:24px}.exam-toolbar .controls{margin-bottom:0}.exam-toolbar-actions{display:flex;gap:9px;flex-wrap:wrap}.exam-section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;background:#2f3a33;color:#fff;border-radius:12px;padding:18px 22px;margin:34px 0 18px;flex-wrap:wrap}.exam-section-letter{display:inline-block;background:#ffffff1f;border-radius:6px;padding:4px 10px;font-size:10px;font-weight:800;letter-spacing:1.4px}.exam-section-head h2{font-size:18px;margin:9px 0 5px;color:#fff}.exam-section-head p{font-size:11.5px;color:#c3cdc5;margin:0;max-width:520px;line-height:1.5}.exam-section-marks{font:800 13px Manrope,sans-serif;background:#fff;color:#2f3a33;border-radius:8px;padding:8px 12px;white-space:nowrap}.exam-questions{display:grid;gap:12px}.exam-q{background:#fff}.exam-q .question-label em{font-style:normal;color:#9aa59d;font-weight:800}.exam-q .options{grid-template-columns:1fr}.exam-q .option.selected{border-color:#2f3a33;background:#eef2ec}.exam-q .answer-key{margin-top:15px}.exam-locked{font-size:10px;font-weight:800;letter-spacing:.6px;color:#5a8a63;background:#eef6ea;border-radius:7px;padding:9px 12px;align-self:center}.case-text{white-space:pre-line;line-height:1.55}
@media(max-width:760px){.exam-cover{padding:22px}.exam-cover-main h1{font-size:20px}.exam-meta{grid-template-columns:repeat(2,1fr)}.chapter-stats{grid-template-columns:repeat(2,1fr)}.exam-section-head{padding:15px 17px}.chapter-hero{padding:22px 20px 0}}
/* SADM exam cheat sheet and full-bank quiz */
.cheat-shell{max-width:1100px}.cheat-controls,.quiz-config{display:flex;align-items:end;gap:12px;flex-wrap:wrap;margin:16px 0 28px}.cheat-controls label,.quiz-config label{display:grid;gap:5px;font-size:11px;font-weight:800;color:#526c59}.cheat-controls>span{font-size:11px;color:#77847a;margin-left:auto}.quiz-config .badge{margin-left:auto}.cheat-chapter{margin:0 0 40px;break-inside:avoid}.cheat-chapter-head{display:flex;align-items:center;gap:15px;border-bottom:2px solid #aec8af;padding-bottom:11px;margin-bottom:14px}.cheat-chapter-head h2{margin:3px 0 0;font-size:20px;color:#203c2b}.cheat-index{font:800 27px Manrope,sans-serif;color:#3e8459;background:#e8f2e5;border-radius:11px;padding:7px 12px}.cheat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:11px}.cheat-block{background:#fff;border:1px solid #e2e9e0;border-radius:11px;padding:16px 17px}.cheat-block-head{display:flex;align-items:start;justify-content:space-between;gap:12px}.cheat-block h3{font-size:13px;line-height:1.35;color:#263d2b;margin:0}.cheat-block .source-link{font-size:9px;white-space:nowrap}.cheat-block ul{margin:12px 0 0;padding-left:16px;color:#47584b;font-size:12px;line-height:1.55}.cheat-block li+li{margin-top:5px}.quiz-config .select{max-width:290px}@media(max-width:700px){.cheat-grid{grid-template-columns:1fr}.cheat-controls>span,.quiz-config .badge{margin-left:0}.cheat-block-head{flex-wrap:wrap}}
.quiz-explanation{margin-top:14px;border:1px solid #b9dbbe;background:#edf8ef;border-radius:10px;padding:15px 17px;line-height:1.55}.quiz-explanation.is-wrong{background:#fff1ef;border-color:#efc5be}.quiz-explanation>strong{display:block;font-size:14px;color:#296e3b}.quiz-explanation.is-wrong>strong{color:#a03c32}.quiz-explanation p{margin:8px 0 12px;font-size:13px;color:#36473b}.quiz-explanation-links{display:flex;align-items:center;flex-wrap:wrap;gap:12px}.quiz-explanation-links .text-link{font-size:11px;font-weight:700;color:#34794c}.question-card .option.correct:disabled{opacity:1;background:#dff3e4;color:#26643a;border-color:#76bf8b}.question-card .option.incorrect:disabled{opacity:1;background:#ffe9e6;color:#963c34;border-color:#df8b81}
.mock-version-label{display:grid;gap:4px;font-size:10px;font-weight:800;letter-spacing:.08em;color:#5a6d60}.mock-version-label .select{min-width:230px;max-width:290px}.exam-toolbar-actions{align-items:end}
.structured-key{white-space:normal}.scheme-part{border-top:1px solid #d8e4dc;padding:11px 0 4px}.scheme-part:first-of-type{margin-top:12px}.scheme-part h4{font-size:13px;color:#246540;margin:0 0 6px}.scheme-part h4 span{font-size:10px;font-weight:700;border-radius:4px;padding:3px 6px;background:#e5f3e8}.scheme-part p{line-height:1.65;margin:0;white-space:pre-line}
.mock-format-switch{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 18px}.mock-format-switch .button{font-size:11px}.exam-shell .panel.case-text{white-space:pre-line;line-height:1.65}
.writing-pad{margin:12px 0 6px}.writing-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:11px;font-weight:700;color:#526c59;margin-bottom:7px}.writing-tools{display:flex;gap:12px}.writing-canvas{display:block;width:100%;height:230px;touch-action:none;background:#fffdf8;border:1px dashed #c4d3c6;border-radius:10px;cursor:crosshair;background-image:repeating-linear-gradient(#fffdf8,#fffdf8 30px,#e6ede6 30px,#e6ede6 31px)}.writing-pad .tiny{margin:6px 0 0}@media(max-width:700px){.writing-canvas{height:190px}}
.answer-mode{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:0 0 16px;font-size:10px;font-weight:800;letter-spacing:.08em;color:#5a6d60}.answer-mode-buttons{display:flex;gap:8px;flex-wrap:wrap}.answer-mode .button{font-size:11px}
.answer-sheet{margin:14px 0 8px;border:1px solid #b9c9bb;border-radius:12px;background:#fff;overflow:hidden}.answer-sheet-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:7px 12px;background:#eef4ee;border-bottom:1px solid #d5e0d6}.answer-sheet-label{font-size:10px;font-weight:800;letter-spacing:.06em;color:#4b6b52}.answer-sheet .writing-canvas{border:0;border-radius:0;background:#fffdf8}
.exam-shell.paper-mode .question-card.exam-q{padding:22px 24px 26px;border-radius:6px}.exam-shell.paper-mode .answer-sheet .writing-canvas{min-height:200px}
.paper-page{position:relative;background:#fff;border:1px solid #cfd6d0;border-radius:6px;box-shadow:0 2px 0 #e6e9e5;padding:20px 18px 16px;margin:16px 0 22px;aspect-ratio:1/1.414;min-height:640px;display:flex;flex-direction:column}.paper-runhead{display:flex;justify-content:space-between;font-size:11px;font-weight:800;color:#4d5a52;letter-spacing:.05em;border-bottom:1px solid #d9ded9;padding-bottom:7px}.paper-page-title{font-size:12px;font-weight:800;color:#22405a;letter-spacing:.05em;text-transform:uppercase;margin:9px 0 10px}.paper-instruction{font-size:11px;color:#5a685e;margin:0 0 10px}.paper-page .answer-sheet{flex:1;display:flex;flex-direction:column;margin:0}.paper-page .answer-sheet .writing-canvas{flex:1;min-height:0}.paper-page .answer-sheet-head{background:#f4f7f3}.paper-addline{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:11px;color:#6a776d;margin-top:12px;padding-top:10px;border-top:1px dashed #ccd4cb}.paper-addline .button{font-size:11px}@media(max-width:700px){.paper-page{aspect-ratio:auto;min-height:520px}}