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.actions{justify-content:flex-end}dialog::backdrop{background:#142d3566}#toast{position:fixed;left:50%;bottom:100px;transform:translateX(-50%);max-width:calc(100% - 32px);background:#233d35;color:#fff;padding:12px 20px;border-radius:9px;font-size:12px;box-shadow:0 5px 20px #0002;opacity:0;pointer-events:none;z-index:60;transition:opacity .15s}#toast.show{opacity:1}
[data-theme=dark]{--bg:#18251f;--paper:#213028;--ink:#e0e8dc;--muted:#a2b2a4;--green:#acd0a7;--green-dark:#c6dfb7;--soft:#2f4332;--line:#36483a;--red:#e8a194;--shadow:none;color-scheme:dark}[data-theme=dark] .primary,[data-theme=dark] .tabs .active{color:#193721;background:#accda1}[data-theme=dark] .hero{filter:brightness(.83)}[data-theme=dark] .sidebar>a.active,[data-theme=dark] .exam-banner,[data-theme=dark] .resume-banner{background:#2d4130}[data-theme=dark] .answer.correct{background:#304a32}[data-theme=dark] .answer.incorrect{background:#51322c}[data-theme=dark] .tag{background:#304230;border-color:#607452}[data-theme=dark] .result-ring>div{background:var(--paper)}[data-theme=dark] .hero .tag{background:#ffffff55;color:#176653}.large .question-card h1{font-size:28px}.large .answer{font-size:19px}.large .explanation p,.large .review-body{font-size:17px}.large .prose{font-size:16px}
@media(min-width:1600px){.quiz-bottom{left:calc(50vw + 112px)}}
@media(max-width:1200px){.header{padding:0 28px}.app-layout{grid-template-columns:190px minmax(0,1fr)}.sidebar{padding:32px 17px}.sidebar>.eyebrow{font-size:8px}.sidebar>a{padding:10px}.header nav{gap:24px}main{padding:30px 28px 45px}.hero-copy{padding-left:26px}.hero h1{font-size:33px}.scene-sign{left:9%;min-width:180px;padding:14px}.scene-sign b{font-size:21px}.topic-grid{gap:13px}.topic-card{padding:18px 16px}.stats>div{padding:0 18px}.quiz-bottom{left:calc(190px + (100vw - 190px)/2);width:min(800px,calc(100vw - 245px))}.setup form{flex-wrap:wrap}.setup label{min-width:200px}.setup form>.primary{margin-top:10px}.bottom-panels{grid-template-columns:1fr 1fr}.exam-banner{gap:15px;padding:20px}.line-icon{font-size:40px}}
@media(max-width:980px){.sidebar{display:none}.app-layout{display:block}.header{height:83px}.header nav{gap:23px}.hero{min-height:340px}.hero h1{font-size:35px}.scene-sign{left:15%;top:85px}.hero-copy{padding-top:29px}.stats>div{padding:0 20px}.quiz-bottom{left:50%;width:calc(100vw - 56px);max-width:800px}.progress-layout{grid-template-columns:1fr 1fr}footer{padding:20px 28px}.page-heading h1{font-size:27px}}
@media(max-width:680px){body{font-size:14px}.header{height:72px;padding:0 19px}.header nav{display:none}.header-tool{font-size:20px}.header-tool span{display:none}.brand{font-size:17px;gap:9px}.brand-icon{width:35px;height:35px;font-size:26px;border-radius:10px}.brand-icon span{font-size:18px}.brand small{font-size:8px;letter-spacing:1.8px}main{padding:21px 18px 38px}.welcome{margin-bottom:17px;font-size:13px}.local-label{font-size:8px}.hero{grid-template-columns:1fr;min-height:0}.hero-copy{padding:26px 24px 20px}.hero h1{font-size:33px;line-height:1.5;margin-top:15px}.hero-copy>p{font-size:11px;margin-bottom:20px}.hero .tag{font-size:9px}.hero .actions{gap:9px}.primary,.secondary{font-size:12px;padding:10px 16px;gap:12px}.hero-secondary{font-size:10px;padding:10px 0}.hero-facts{margin-top:22px;gap:19px;font-size:9px}.hero-facts b{font-size:16px}.hero-facts>span+span{padding-left:19px}.road-scene{min-height:175px;margin-top:-8px}.scene-sign{top:16px;left:23%;transform:rotate(-5deg);min-width:176px;padding:11px 14px}.scene-sign b{font-size:19px}.scene-sign small{font-size:9px}.scene-sign>span{font-size:5px}.scene-sign:after{height:80px}.sun{width:90px;height:90px;top:0;right:20px}.building{bottom:60px}.b1{height:75px;right:60px}.b2{height:100px;right:20px}.b3{height:60px;right:-20px}.b4{left:40px;height:80px}.hill-one{top:70px}.hill-two{top:100px}.road{bottom:-220px;left:48%;width:100px;transform:rotate(55deg)}.little-car{bottom:15px;left:48%;transform:rotate(54deg);width:50px;height:28px}.little-car:after{left:36px}.scene-tag{font-size:6px;right:14px;bottom:12px}.stats{grid-template-columns:1fr 1fr;margin:18px 0 25px;padding:0;gap:0}.stats>div{padding:16px 20px}.stats>div:nth-child(3){border-left:0}.stats>div:nth-child(n+3){border-top:1px solid var(--line)}.stats strong{font-size:26px}.stats>div>span{font-size:10px}.stats strong small{font-size:10px}.stats>div>small,.stats a{font-size:8px}.stats .track{max-width:none}.section-heading{margin:24px 0 16px}.section-heading h2{font-size:18px}.section-heading>a,.section-heading>.muted{font-size:9px}.section-heading .eyebrow{font-size:7px;letter-spacing:1.4px}.topic-grid{grid-template-columns:1fr 1fr;gap:11px}.topic-card{padding:16px 14px}.topic-top{margin-bottom:14px}.topic-icon{width:34px;height:34px;font-size:21px}.topic-number{font-size:8px}.topic-number span{margin-left:4px}.topic-card h3{font-size:12px;letter-spacing:-.4px}.topic-card p{font-size:9px;line-height:1.8;min-height:32px;margin-bottom:15px}.topic-progress{font-size:8px}.bottom-panels{grid-template-columns:1fr;margin-top:20px;gap:12px}.exam-banner{padding:23px;gap:23px}.line-icon{font-size:45px}.exam-banner h2{font-size:16px}.update-panel{padding:20px}.update-panel p{font-size:11px}.footnote{font-size:9px;margin-top:20px}.resume-banner{padding:16px;gap:10px}.resume-banner b{font-size:11px}.resume-banner span{font-size:9px}.resume-banner .primary{white-space:nowrap;font-size:10px;padding:9px 11px}.page-heading{margin-bottom:23px}.page-heading h1{font-size:24px}.page-heading .muted{font-size:11px}.page-heading .eyebrow{font-size:8px}.panel{padding:22px 20px}.setup h2{font-size:18px}.setup form{display:block}.setup label{margin:17px 0;min-width:0}.setup select{width:100%;font-size:13px}.setup .primary{width:100%}.exam-intro{padding:25px 19px}.exam-symbol{font-size:50px}.exam-intro>h2{font-size:21px}.exam-facts{gap:25px;margin:20px 0}.exam-facts strong{font-size:30px}.exam-facts small{font-size:10px;margin-left:2px}.exam-facts span{font-size:9px}.exam-notes{font-size:11px;padding-left:18px;margin-bottom:23px}.exam-intro>.primary{width:100%}.exam-intro .small{font-size:9px}.quiz-shell{padding-bottom:100px}.in-quiz main{padding:15px 16px 25px}.quiz-heading{gap:8px;font-size:10px}.quiz-heading>a{font-size:9px}.compact-timer{font-size:9px}.compact-timer b{font-size:12px}.quiz-track{margin:12px 0 15px}.question-card{padding:16px 17px 20px}.quiz-meta .tag{font-size:8px;padding:3px 7px}.bookmark{font-size:10px;padding:5px}.question-label{margin:16px 0 8px;font-size:8px}.question-card h1{font-size:20px;line-height:1.6;margin-bottom:19px}.answers{gap:10px}.answer{padding:12px;min-height:57px;font-size:14px;gap:11px;line-height:1.6}.letter{width:25px;flex-basis:25px;height:25px;font-size:10px}.answer-status{font-size:8px}.confirm-row{margin-top:18px;gap:10px}.confirm-row .small{font-size:10px}.confirm-row .primary{font-size:12px;padding:9px 15px}.question-tools{margin-top:14px}.question-tools .small,.question-tools button{font-size:9px}.explanation{padding:15px;margin-top:17px}.explanation h2{font-size:15px}.explanation p{font-size:12px}.explanation summary{font-size:10px}.source{font-size:9px}.quiz-bottom{width:calc(100% - 28px);bottom:calc(70px + env(safe-area-inset-bottom));padding:10px 12px;gap:9px;border-radius:10px}.quiz-bottom>.small{font-size:8px;max-width:75px;line-height:1.6}.quiz-bottom>div{gap:7px}.quiz-bottom .primary,.quiz-bottom .secondary{padding:9px 12px;font-size:11px}.question-grid{grid-template-columns:repeat(5,1fr)}.exam-map{padding:15px}.exam-map summary{font-size:11px}.result-card h1{font-size:21px}.result-card .muted{font-size:11px}.result-ring{width:150px;height:150px}.result-ring strong{font-size:35px}.result-ring small{font-size:14px}.review-question summary{padding:15px 14px;gap:10px;font-size:12px}.review-question summary small{font-size:9px}.review-body{margin:0 16px;font-size:12px}.result-mark{flex-basis:24px;height:24px;font-size:12px}.review-toolbar{display:block}.tabs{justify-content:space-between;margin-bottom:17px;gap:3px}.tabs button{padding:9px 11px;font-size:11px}.tabs button span{font-size:9px;margin-left:4px}.search-label input{width:100%;font-size:12px}.review-start .primary{font-size:11px}.progress-layout{grid-template-columns:1fr;gap:17px}.progress-layout h2{font-size:17px}.progress-row>div:first-child{font-size:11px}.progress-row span{font-size:9px}.source-list{grid-template-columns:1fr}.prose{font-size:12px}.source-card h3{font-size:12px}.prose h2{font-size:17px}.settings-panel h2{font-size:18px}.settings-panel p{font-size:12px}.settings-panel .actions{gap:9px}.settings-panel .actions>*{font-size:11px}.empty-state h2{font-size:18px}.empty-state p{font-size:12px}footer{margin-bottom:calc(64px + env(safe-area-inset-bottom));padding:18px;display:flex;flex-wrap:wrap;font-size:8px;gap:9px 19px}footer span{width:100%;margin:0}.mobile-nav{position:fixed;bottom:0;left:0;right:0;z-index:20;display:flex;justify-content:space-around;border-top:1px solid var(--line);background:var(--paper);padding:9px 7px calc(8px + env(safe-area-inset-bottom))}.mobile-nav a{display:flex;flex-direction:column;align-items:center;gap:3px;font-size:21px;color:#9ba697;line-height:1.3;min-width:50px}.mobile-nav span{font-size:8px}.mobile-nav a.active{color:var(--green)}.mobile-nav a:hover{text-decoration:none}.large .question-card h1{font-size:24px}.large .answer{font-size:18px}.large .explanation p{font-size:16px}.large .review-question summary{font-size:16px}.large .review-body{font-size:16px}.large .quiz-bottom .primary,.large .quiz-bottom .secondary{font-size:12px}.large .quiz-shell{padding-bottom:130px}#toast{bottom:150px;font-size:11px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
.support-layout{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:24px;align-items:start}.support-main{padding:34px}.support-main h2{font-size:27px;margin:14px 0}.support-main>p:not(.eyebrow){font-size:13px;line-height:1.95}.support-main strong{font-weight:600}.support-illustration{height:166px;margin:22px 0 27px;background:var(--soft);border:1px solid var(--line);border-radius:12px;position:relative;display:flex;align-items:center;justify-content:center;gap:20px;overflow:hidden}.support-illustration>span{font-size:68px;line-height:1;transform:rotate(-9deg)}.support-illustration>i{color:var(--green);font-size:49px;font-style:normal;line-height:1}.support-illustration>small{position:absolute;bottom:15px;font-size:8px;color:var(--muted);letter-spacing:2px}.support-list{margin:22px 0 26px;padding-left:20px;color:var(--muted);font-size:12px;line-height:2.3}.coffee-link{font-size:14px;gap:14px;padding:13px 21px}.support-main .support-payment-note{font-size:11px!important;color:var(--muted);margin:17px 0 0}.support-aside{display:flex;flex-direction:column;gap:22px;min-width:0}.support-aside h2{font-size:21px}.support-aside p{font-size:12px;line-height:1.9}.support-email{display:block;font-size:17px;font-weight:600;overflow-wrap:anywhere;margin:20px 0 15px}.support-github{display:block;font-size:12px}.support-feedback .tag{margin-bottom:19px}.support-feedback h2{font-size:19px}.support-feedback .secondary{margin-bottom:19px}.support-feedback>p:last-child{margin-bottom:0;font-size:11px}.question-report{display:inline-block;margin-top:9px}.share-field{display:flex;flex-direction:column;gap:7px;font-size:12px;margin:20px 0}.share-field input{width:100%;padding:12px;border:1px solid var(--line);border-radius:6px;background:var(--bg);color:var(--ink);font-size:14px}.large .support-main>p:not(.eyebrow),.large .support-aside p,.large .support-list{font-size:17px}.large .support-main .support-payment-note{font-size:14px!important}
@media(max-width:980px){.support-layout{gap:18px;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr)}.support-main{padding:26px}.support-aside .panel{padding:25px}.support-email{font-size:15px}}
@media(max-width:680px){.support-layout{grid-template-columns:1fr;gap:18px}.support-main{padding:24px 21px}.support-main h2{font-size:23px}.support-main>p:not(.eyebrow){font-size:12px}.support-main>.eyebrow{font-size:8px;letter-spacing:1.2px}.support-illustration{height:145px;margin:21px 0 25px}.support-illustration>span{font-size:57px}.support-illustration>i{font-size:42px}.support-illustration>small{font-size:6px;letter-spacing:1.5px}.support-list{font-size:11px;padding-left:17px}.coffee-link{width:100%;font-size:13px}.support-main .support-payment-note{font-size:10px!important}.support-aside{gap:18px}.support-aside .panel{padding:24px 21px}.support-aside h2{font-size:20px}.support-email{font-size:17px}.support-feedback h2{font-size:19px}.support-feedback .secondary{width:100%}}
.support-start{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:14px}.support-start .coffee-link{font-size:12px;padding:10px 14px;gap:9px}