:root{--exam-blue:#145bd7;--exam-navy:#102540;--exam-bg:#f3f6fc;--exam-line:#d7e0ee;--exam-text:#172c48;--exam-muted:#526680;--exam-surface:#fff}body.exam{background:var(--exam-bg);color:var(--exam-text)}.exam main{padding-top:26px}.exam a:focus-visible,.exam button:focus-visible{outline:3px solid #edaa19;outline-offset:3px}.exam nav a{white-space:nowrap}.exam .nav{height:auto;min-height:66px;gap:20px}.exam .nav nav{overflow-x:auto;padding:12px 0}.exam .nav nav a:first-child{display:block}.exam h1{font-size:clamp(1.8rem,4vw,2.8rem);line-height:1.35;letter-spacing:-.035em}.exam h2{font-size:1.5rem}.exam p{word-break:keep-all;overflow-wrap:anywhere}.exam .kicker{font-size:.875rem;font-weight:800;color:var(--exam-blue);letter-spacing:.06em}.exam .intro{padding:22px 0 20px}.exam .intro p{max-width:760px;color:var(--exam-muted)}.exam-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.exam-card{display:block;padding:22px;border:1px solid var(--exam-line);border-radius:16px;background:var(--exam-surface);min-width:0}.exam-card h2,.exam-card h3{margin:10px 0;font-size:1.2rem}.exam-card p{margin:8px 0;color:var(--exam-muted)}a.exam-card:hover{border-color:var(--exam-blue);box-shadow:0 5px 20px #12346b0d}.exam-card.primary{background:var(--exam-navy);color:#fff;border-color:var(--exam-navy)}.exam-card.primary p{color:#d3e1f4}.exam-tag{display:inline-block;border-radius:6px;padding:3px 8px;background:#e4edff;color:#174fa9;font-size:.875rem;font-weight:750}.exam-links{display:flex;flex-wrap:wrap;gap:10px;margin:20px 0}.exam-links a,.exam-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;border:1px solid var(--exam-line);border-radius:10px;padding:10px 16px;background:var(--exam-surface);color:var(--exam-text);font:inherit;font-weight:750;cursor:pointer;line-height:1.4}.exam-btn.primary{background:var(--exam-blue);color:#fff;border-color:var(--exam-blue)}.exam-btn:disabled{opacity:.5;cursor:default}.exam-note{padding:16px 20px;background:#e8effb;border-left:4px solid #296acf;border-radius:8px;color:#183b70}.exam-note.warning{background:#fff5da;color:#684b12;border-color:#db9d1a}.exam-section{margin:34px 0}.exam-article{max-width:880px;margin:0 auto;background:var(--exam-surface);padding:clamp(18px,4vw,38px);border:1px solid var(--exam-line);border-radius:16px}.exam-article h2{margin:32px 0 14px}.exam-article h3{margin:24px 0 10px}.exam-article p,.exam-article li{line-height:1.85}.exam-article a:not(.exam-btn){color:var(--exam-blue);text-decoration:underline;text-underline-offset:3px}.exam-article li{margin:7px 0}.exam-article table{border-collapse:collapse;width:100%}.exam-article td,.exam-article th{border:1px solid var(--exam-line);padding:12px;text-align:left}.exam-meta{color:var(--exam-muted);font-size:.875rem}.course-image{display:block;width:100%;height:auto;margin:16px 0;border:1px solid var(--exam-line);border-radius:12px;background:#fff}.exam-toc{padding:16px 24px;background:var(--exam-bg);border-radius:10px}.exam-toc a{display:block;margin:8px 0}.exam-search{display:block;width:100%;padding:14px 16px;border:1px solid var(--exam-line);border-radius:10px;font:inherit;background:var(--exam-surface);color:var(--exam-text)}.cbt-shell{max-width:820px;margin:0 auto}.cbt-controls{display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;margin:12px 0}.cbt-controls .exam-btn{font-size:.875rem;min-height:44px;padding:8px 12px}.cbt-setup{display:grid;grid-template-columns:1fr 1fr;gap:16px}.cbt-setup label{display:block;font-weight:700}.cbt-setup select,.cbt-setup input{display:block;width:100%;margin-top:8px;padding:12px;border:1px solid var(--exam-line);border-radius:8px;font:inherit;background:var(--exam-surface);color:var(--exam-text)}.cbt-setup .full{grid-column:1/-1}.cbt-status{display:flex;gap:12px;justify-content:space-between;align-items:center;font-weight:800;font-size:.95rem}.cbt-progress{height:6px;margin:12px 0 24px;border-radius:6px;background:var(--exam-line);overflow:hidden}.cbt-progress span{display:block;height:100%;background:var(--exam-blue)}.cbt-question{font-size:var(--question-size,1.2rem);font-weight:800;line-height:1.7;margin:12px 0}.cbt-options{display:grid;gap:11px;margin:20px 0}.cbt-option{display:flex;align-items:flex-start;gap:14px;padding:16px;border:2px solid var(--exam-line);border-radius:13px;background:var(--exam-surface);color:var(--exam-text);font:inherit;font-size:var(--option-size,1.05rem);line-height:1.65;text-align:left;cursor:pointer;min-height:60px;width:100%}.cbt-option .number{display:grid;place-items:center;flex:0 0 30px;height:30px;border-radius:8px;background:var(--exam-bg);font-weight:800}.cbt-option.selected{border-color:var(--exam-blue);background:#edf3ff}.cbt-option.correct{border-color:#17835e;background:#e9f7ef;color:#164831}.cbt-option.wrong{border-color:#c8454c;background:#fff0f1;color:#793039}.cbt-option:disabled{opacity:1;cursor:default}.cbt-answer{padding:20px;background:#eaf2ff;border:1px solid #bfd2f2;border-radius:12px;color:#173759}.cbt-answer h3{margin:0 0 10px}.cbt-answer p{line-height:1.8}.cbt-bottom{display:flex;gap:10px;align-items:center;margin-top:20px}.cbt-bottom .primary{flex:1}.cbt-result-score{font-size:3rem;font-weight:900;line-height:1.2;margin:12px 0}.cbt-question-map{display:flex;flex-wrap:wrap;gap:6px}.cbt-question-map button{min-width:42px;min-height:42px;border:1px solid var(--exam-line);border-radius:6px;color:var(--exam-text);background:var(--exam-surface);cursor:pointer}.cbt-question-map button.done{background:#dce9fc}.cbt-question-map button.current{border:2px solid var(--exam-blue)}.cbt-source-image{width:100%;height:auto;background:white;border:1px solid var(--exam-line);border-radius:10px;cursor:zoom-in}.cbt-image-link{display:block}.cbt-empty{padding:20px;border:1px dashed var(--exam-line);border-radius:12px}.exam [hidden]{display:none!important}.cbt-mobile .cbt-shell{max-width:620px}.cbt-mobile .cbt-bottom{position:sticky;bottom:0;background:var(--exam-surface);padding:12px 0 calc(12px + env(safe-area-inset-bottom));z-index:3;border-top:1px solid var(--exam-line)}.cbt-mobile .cbt-option{min-height:70px;padding:17px 14px}.cbt-mobile .cbt-controls{position:relative}.cbt-mobile .exam-article{padding:20px}.exam[data-theme=dark]{--exam-bg:#101a2b;--exam-surface:#192740;--exam-text:#edf3ff;--exam-muted:#bacbe2;--exam-line:#3c4f6b;--exam-blue:#84b1ff;--ink:#edf3ff;--muted:#bacbe2;--line:#3c4f6b;background:#101a2b;color:#edf3ff}.exam[data-theme=dark] header{background:#192740}.exam[data-theme=dark] .exam-btn.primary{background:#2e69d8;color:white;border-color:#2e69d8}.exam[data-theme=dark] .cbt-option.selected{background:#254a7c;color:white}.exam[data-theme=dark] .cbt-answer{background:#213958;color:#edf3ff}.exam[data-theme=dark] .exam-note{background:#253b5b;color:#edf3ff}.exam[data-theme=dark] .cbt-question-map button.done{background:#254a7c}.exam[data-theme=dark] footer{background:#192740;color:#bacbe2}.exam[data-font=large]{--question-size:1.45rem;--option-size:1.25rem}.exam-home-banner{margin:28px 0;padding:26px;border-radius:16px;background:#102540;color:white}.exam-home-banner h2{margin:0 0 10px}.exam-home-banner .exam-links{margin-bottom:0}.exam-home-banner .exam-links a{background:white;color:#102540}.exam-sources{font-size:.9rem;border-top:1px solid var(--exam-line);margin-top:30px;padding-top:20px}.exam-sources a{overflow-wrap:anywhere}@media(max-width:800px){.exam-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.exam .nav{align-items:flex-start;flex-direction:column;gap:0;padding-top:10px;padding-bottom:0}.exam .nav nav{max-width:100%;gap:18px}.exam header{position:relative}}@media(max-width:540px){.exam-grid{grid-template-columns:1fr}.exam main{padding:16px 12px 40px}.exam .intro{padding:12px 3px}.exam-card{padding:18px}.cbt-setup{grid-template-columns:1fr}.exam h1{font-size:1.8rem}.cbt-mobile .intro h1{font-size:1.55rem}.cbt-mobile .intro p{font-size:.9rem}.cbt-mobile .exam-article{padding:15px}.cbt-bottom{gap:8px}.cbt-bottom .exam-btn{padding:12px}.exam-article{border-radius:12px}.exam-article table{font-size:.9rem}.exam-article td,.exam-article th{padding:9px}.cbt-status{font-size:.875rem}.cbt-controls{gap:8px}}
body:not(.exam) header .nav{height:auto;min-height:66px;gap:12px;flex-wrap:wrap}body:not(.exam) header .nav nav{overflow-x:auto;max-width:100%;white-space:nowrap;padding:10px 0}body:not(.exam) header .nav nav a{flex-shrink:0}@media(max-width:540px){body:not(.exam) header .nav{padding-top:10px}body:not(.exam) header .nav nav{width:100%;gap:16px}}

/* Full course map and practical instructions */
.course-overview{margin:0}.course-overview>a{cursor:zoom-in}.course-overview figcaption{font-size:.9rem;color:var(--exam-muted);line-height:1.6}.course-steps{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.course-step{min-width:0;padding:24px;border:1px solid var(--exam-line);border-radius:16px;background:#fff;scroll-margin-top:100px}.course-step-title{display:flex;align-items:center;gap:12px}.course-step-title>span{display:grid;place-items:center;flex:0 0 38px;height:38px;background:var(--exam-navy);color:white;border-radius:50%;font-weight:800}.course-step h3{font-size:1.25rem;margin:0}.course-step ol{padding-left:24px}.course-step li{line-height:1.85;margin:14px 0;word-break:keep-all;overflow-wrap:anywhere}.course-caution{padding:16px;background:#fff4df;border-radius:10px;line-height:1.8;color:#654619}.course-caution strong{display:block;margin-bottom:5px}.course-more{display:inline-flex;min-height:44px;align-items:center;color:var(--exam-blue);font-weight:750}.course-table{overflow-x:auto}.course-table table{min-width:520px}.course-table th{background:#ecf2fc}.course-table td:first-child{width:18%;font-weight:700}.course-table td:last-child{width:15%;white-space:nowrap}.course-failures li::marker{color:#b93645}.exam section[id]{scroll-margin-top:100px}@media(max-width:800px){.course-steps{grid-template-columns:1fr}.course-step{padding:20px}.exam section[id]{scroll-margin-top:20px}}