@layer base {
  :root{font-family: -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#242039;background:#f4f5fa;font-synthesis:none;--accent:#4526b1;--muted:#68667a;--surface:#fff;--border:#e4e3ec;--soft:#f1eefb;color-scheme:light}
  *{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}button:disabled{cursor:default;opacity:.5}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #9474ff;outline-offset:4px}a{color:var(--accent)}[hidden]{display:none!important}h1,h2,h3,p{margin:0}h1{font-size:clamp(2rem,5vw,2.8rem);line-height:1.13;letter-spacing:-.055em}h2{font-size:1.13rem;line-height:1.4;letter-spacing:-.025em}h3{font-size:1.1rem;line-height:1.5}p{line-height:1.65}small,.muted{color:var(--muted)}small{font-size:.875rem}button{min-height:44px}img{display:block}fieldset{border:0;padding:0;margin:0}legend{font-weight:600;margin-bottom:12px}input[type=search],select{width:100%;min-height:48px;padding:12px;border:1px solid var(--border);border-radius:10px;background:var(--surface);color:inherit}select{padding-right:28px}label{display:block}label select{margin-top:8px}input[type=radio],input[type=checkbox]{accent-color:var(--accent)}[lang=en]{overflow-wrap:anywhere}progress{height:6px;border:0;border-radius:10px;overflow:hidden;background:var(--soft);accent-color:var(--accent)}progress::-webkit-progress-bar{background:var(--soft)}progress::-webkit-progress-value{background:var(--accent);border-radius:10px}progress::-moz-progress-bar{background:var(--accent)}
}
.app-header{max-width:1040px;margin:auto;padding:22px 32px;display:flex;align-items:center;justify-content:space-between;gap:16px}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:inherit;font-size:1.12rem}.brand img{border-radius:10px}.brand small{display:block;font-size:.65rem;letter-spacing:.19em;margin-top:3px}.brand strong{font-weight:750}
main{max-width:976px;margin:0 auto;padding:22px 32px 130px;outline:none}main:has(.question-stem),main:has(.review-question){max-width:800px}.intro{padding:14px 0 30px;max-width:650px}.intro h1{margin:12px 0 16px}.intro p,.page-heading p{color:var(--muted);max-width:560px}.eyebrow{font-size:.78rem;font-weight:750;letter-spacing:.12em;color:var(--accent);text-transform:uppercase}.card{background:var(--surface);border:1px solid var(--border);border-radius:20px;padding:24px;margin-bottom:20px;box-shadow:0 4px 16px #23203703}.row{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.badge{border-radius:30px;background:var(--soft);padding:7px 12px;font-size:.875rem;font-weight:600;color:var(--accent)}.daily{border-top:3px solid var(--accent)}.scores{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:25px}.score{display:flex;flex-direction:column;gap:10px}.score>span{font-size:.9rem;color:var(--muted)}.score strong{font-size:2.1rem;letter-spacing:-.055em}.score progress{width:100%}.score small{font-variant-numeric:tabular-nums}.dashboard-grid{display:grid;grid-template-columns:1.12fr 1fr;gap:20px}.dashboard-grid>.card{margin:0}form{display:grid;gap:24px;margin-top:22px}form label,legend{font-size:.94rem}#focus-fields{display:grid;gap:18px}.count-picker{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}.count-picker label{position:relative}.count-picker input{position:absolute;opacity:0}.count-picker span{display:grid;place-items:center;height:46px;border-radius:10px;border:1px solid var(--border);cursor:pointer;font-weight:600}.count-picker input:checked+span{border-color:var(--accent);color:var(--accent);background:var(--soft)}.count-picker input:focus-visible+span{outline:3px solid #9474ff;outline-offset:3px}.primary,.secondary{border:1px solid var(--border);border-radius:10px;display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:11px 16px;font-weight:600;text-decoration:none;line-height:1.4;background:var(--surface);color:var(--accent);font-size:.94rem}.primary{background:var(--accent);border-color:var(--accent);color:#fff;min-height:50px}.full{width:100%}.full.primary{justify-content:space-between}.full.primary:only-child{justify-content:center}.reward-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:28px 0}.reward-grid>div{display:flex;flex-direction:column;align-items:center;gap:8px}.star{font-size:1.8rem}.RED{color:#dc424e}.ORANGE{color:#d67b20}.YELLOW{color:#b69313}.WHITE{color:#9a9aaf}.items{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:20px}.stat-line{display:flex;gap:16px;justify-content:space-between;border-top:1px solid var(--border);padding:16px 0;font-size:.94rem}.stat-line:last-child{padding-bottom:0}.device-note{font-size:.875rem;color:var(--muted);max-width:630px;text-align:center;line-height:1.6;margin:28px auto 0}.resume{margin-top:24px}.resume p{margin:10px 0 24px}nav{position:fixed;bottom:0;left:0;right:0;border-top:1px solid var(--border);background:var(--surface);padding:10px 20px calc(10px + env(safe-area-inset-bottom));display:flex;justify-content:center;gap:60px;z-index:5}nav a{display:flex;flex-direction:column;gap:4px;align-items:center;text-decoration:none;color:var(--muted);font-size:.8rem;min-width:70px;padding:6px 14px;border-radius:12px}nav a>span{font-size:1.4rem;line-height:1.2}nav a[aria-current]{color:var(--accent);background:var(--soft);font-weight:700}.practice-bar{margin-bottom:24px}.question-top{display:flex;flex-direction:column;gap:14px}.question-top .eyebrow{display:flex;justify-content:space-between}.question-top progress{width:100%}.help-row{margin:18px 0}.toggle{display:flex;align-items:center;gap:9px;font-size:.875rem}.toggle input{width:18px;height:18px}.question-stem{font-size:1.3rem;line-height:1.65;letter-spacing:-.02em;font-weight:650;margin-bottom:26px}.answer-options{display:grid;gap:12px;margin-bottom:25px}.option{position:relative;display:flex;gap:14px;align-items:flex-start;padding:17px;border:1px solid var(--border);border-radius:14px;background:var(--surface);line-height:1.6;cursor:pointer}.option input{position:absolute;opacity:0}.option:focus-within{outline:3px solid #9474ff;outline-offset:2px}.option.selected{border:2px solid var(--accent);padding:16px;background:var(--soft)}.letter{display:grid;place-items:center;min-width:29px;height:29px;border-radius:8px;background:#eeedf3;font-size:.9rem;font-weight:750}.option.correct{border:2px solid #218451;padding:16px;background:#eef9f1}.option.incorrect{border-color:#ba4853;background:#fff2f2}.selection-card h2{font-size:1rem}.selection-card .muted{font-size:.875rem;margin:10px 0}.selection-row{display:flex;gap:8px;margin-top:13px;align-items:flex-start;flex-wrap:wrap}.selection-row .secondary{font-size:.8rem}.picker{flex:1;min-width:170px;display:flex;gap:14px;justify-content:space-between;text-align:left;border:1px solid var(--border);border-radius:10px;background:var(--surface);color:inherit;padding:13px;line-height:1.5}.feedback{margin-top:24px}.feedback h2{color:var(--accent)}.feedback.success h2{color:#218451}.feedback p{margin:14px 0}.feedback details{border-top:1px solid var(--border);padding:14px 0}summary{cursor:pointer;line-height:1.5;min-height:30px}.source-link{border:0;background:transparent;color:var(--accent);text-align:left;padding:12px 0;line-height:1.6;display:flex;justify-content:space-between;gap:10px;width:100%}.page-heading{margin:22px 0 25px}.page-heading h1{margin:12px 0}.search-label{margin-bottom:20px;position:sticky;top:8px;z-index:1}.book-list{border:1px solid var(--border);border-radius:16px;overflow:hidden;background:var(--surface)}.book-row,.picker-row{display:flex;align-items:center;gap:12px;padding:18px;border-bottom:1px solid var(--border)}.book-row:last-child{border:0}.book-title{flex:1;border:0;background:none;color:inherit;text-align:left;display:flex;flex-direction:column;gap:6px;line-height:1.5;min-width:0;padding:0}.book-number{font-weight:700;color:var(--accent)}.book-number .star{font-size:1rem}.book-row .secondary,.picker-row .secondary{font-size:.8rem;padding:9px}.history-card>p{margin-top:12px;color:var(--muted)}.history-card>.row:last-child{margin-top:24px}.empty{text-align:center;padding:45px 25px}.empty p{color:var(--muted);margin:15px 0 25px}.empty-symbol{font-size:3rem;color:var(--accent);display:block;margin-bottom:15px}.review-question{margin:32px 0 50px}.review-question>h2{font-size:1.2rem;line-height:1.6}.review-question>p{margin-top:14px}.loading{padding:80px 20px;text-align:center;color:var(--muted)}#notice{max-width:912px;margin:10px auto;padding:16px;background:#fff2ed;border:1px solid #d89d84;border-radius:10px;color:#743921;position:relative;z-index:8}dialog{width:min(800px,calc(100% - 24px));max-height:calc(100dvh - 40px);padding:0;border:1px solid var(--border);border-radius:20px;background:var(--surface);color:inherit}dialog::backdrop{background:#16102b99;backdrop-filter:blur(3px)}.modal-header{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;border-bottom:1px solid var(--border);position:sticky;top:0;background:var(--surface);z-index:2}#modal-body{padding:22px}.reader-tools{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}.reader-tools .secondary{font-size:.8rem}.reader{font-family:Georgia,serif;line-height:1.85}.reader p{margin:22px 0;line-height:1.85}.pdf-scroll{overflow:auto;margin-top:18px}.pdf-scroll canvas{display:block;width:100%;height:auto;min-width:560px}.hint{padding:16px 0;border-bottom:1px solid var(--border)}.hint p{margin:12px 0}blockquote{margin:18px 0;padding:12px 18px;border-left:3px solid var(--accent);background:var(--soft);line-height:1.7}mark{background:#f7df80;color:#262238;border-radius:3px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
@media(max-width:640px){.app-header{padding:18px 20px}main{padding:10px 20px 120px}.intro{padding:14px 0 25px}.intro h1{max-width:320px}.intro p{font-size:.95rem}.card{padding:20px;border-radius:17px}.scores{gap:16px}.score>span{font-size:.82rem}.score strong{font-size:1.9rem}.dashboard-grid{grid-template-columns:1fr}.row h2{font-size:1.05rem}.badge{font-size:.8rem}.question-stem{font-size:1.15rem}.option{padding:14px;gap:11px}.option.selected,.option.correct{padding:13px}nav{gap:22px}.book-row{padding:16px 13px;gap:10px}.book-row>.secondary{max-width:90px}.book-title{font-size:.94rem}.history-card .row{align-items:flex-start}.history-card .badge{white-space:nowrap}.modal-header{padding:14px 16px}#modal-body{padding:16px}dialog{width:calc(100% - 12px);max-height:calc(100dvh - 16px);border-radius:16px}.reader-tools{gap:6px}.reader-tools .secondary{padding:8px 10px}#notice{margin:10px 20px}.picker-row{padding:14px 0}.practice-bar .secondary{font-size:.85rem;padding:10px 12px}}
@media(prefers-color-scheme:dark){:root{color:#eeedf5;background:#14121c;--surface:#211e2d;--border:#383345;--muted:#b0aabd;--accent:#b49aff;--soft:#322746;color-scheme:dark}.primary{background:#714ada;border-color:#714ada;color:#fff}.letter{background:#393242}.option.correct{background:#20392b;border-color:#65b986}.option.incorrect{background:#422831;border-color:#d27a85}.feedback.success h2{color:#7dce9f}.WHITE{color:#e0dfea}#notice{background:#402920;color:#ffd9c7}.pdf-scroll{background:#fff}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}
.header-links{display:flex;align-items:center;gap:8px}.header-links a{display:flex;align-items:center;min-height:44px;padding:8px 11px;border-radius:9px;font-size:.875rem;text-decoration:none;font-weight:600}.header-links a[aria-current]{background:var(--soft)}
.exam-countdown{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;border:1px solid var(--border);border-radius:16px;padding:18px 22px;margin-bottom:14px;background:var(--surface)}.exam-countdown p{font-size:.9rem;color:var(--muted);margin-top:5px}.exam-countdown>small{flex-basis:100%;font-size:.8rem}.countdown-units{display:flex;gap:20px}.countdown-units>span{font-size:.875rem;color:var(--muted)}.countdown-units strong{font-size:1.8rem;letter-spacing:-.04em;margin-right:5px;color:var(--accent);font-variant-numeric:tabular-nums}.study-links{display:flex;gap:20px;flex-wrap:wrap;margin:4px 0 24px;font-size:.875rem}.study-links a{padding:8px 0;text-underline-offset:4px}.quiet-clock{position:relative;display:flex;align-items:center;justify-content:center}.clock-button{width:44px;height:44px;display:grid;place-items:center;color:var(--muted);background:transparent;border:1px solid var(--border);border-radius:50%}.clock-button[aria-expanded=true]{color:var(--accent);background:var(--soft)}#clock-time{position:absolute;top:52px;left:50%;transform:translateX(-50%);padding:10px 14px;border:1px solid var(--border);border-radius:10px;background:var(--surface);color:var(--accent);box-shadow:0 5px 18px #0001;font-size:.875rem;font-weight:650;white-space:nowrap;font-variant-numeric:tabular-nums;z-index:3}.practice-bar{flex-wrap:nowrap}.guide{max-width:800px;margin:auto}.guide .card>p{margin-top:15px}.guide .card>.secondary{margin-top:18px}.steps{padding-left:24px;margin:18px 0}.steps li{line-height:1.75;padding-left:7px;margin-bottom:16px}.steps strong{color:var(--accent)}.guide-definitions{line-height:1.65}.guide-definitions dt{font-weight:700;margin-top:16px}.guide-definitions dd{margin:6px 0 0;color:var(--muted)}.timing-table{margin:20px 0;border:1px solid var(--border);border-radius:12px;overflow:hidden}.timing-table>div{display:flex;justify-content:space-between;gap:20px;padding:12px 16px;border-bottom:1px solid var(--border);font-variant-numeric:tabular-nums}.timing-table>div:last-child{border:0}.scope-note{padding:16px 20px;border-left:3px solid var(--accent);background:var(--soft);border-radius:0 10px 10px 0;margin-bottom:24px;font-size:.94rem;line-height:1.7}.history-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin:28px 0}.history-metrics>div{display:flex;flex-direction:column;gap:8px}.history-metrics strong{font-size:1.7rem;letter-spacing:-.045em}.history-metrics span{color:var(--muted);font-size:.875rem}.page-tabs{position:static;display:flex;justify-content:flex-start;gap:8px;border:0;background:none;padding:0;margin:28px 0 20px;z-index:auto}.page-tabs a{display:block;min-width:0;min-height:44px;padding:12px 18px;color:var(--muted);font-size:.9rem;border:1px solid var(--border);background:var(--surface)}.page-tabs a[aria-current]{color:var(--accent);background:var(--soft);border-color:var(--accent)}.section-heading{display:flex;gap:16px;align-items:center;justify-content:space-between;flex-wrap:wrap;margin-bottom:15px}.period-picker{display:flex;gap:4px;border:1px solid var(--border);padding:4px;border-radius:10px;background:var(--soft)}.period-picker button{border:0;border-radius:7px;background:transparent;font-size:.82rem;color:var(--muted);padding:8px 12px}.period-picker button[aria-pressed=true]{background:var(--surface);color:var(--accent);box-shadow:0 1px 3px #0001;font-weight:700}.sample-note{font-size:.82rem;color:var(--muted);margin:18px 0 0;line-height:1.7}.frequency-list{margin-top:14px}.frequency-row{display:grid;grid-template-columns:24px minmax(0,1fr) 110px;gap:14px;align-items:center;padding:20px 0;border-bottom:1px solid var(--border)}.frequency-rank{color:var(--muted);font-size:.82rem}.frequency-topic{display:flex;flex-direction:column;gap:7px;min-width:0}.frequency-topic>span{font-size:.875rem;color:var(--muted);line-height:1.5}.frequency-track{height:5px;border-radius:5px;background:var(--soft);margin-top:5px;overflow:hidden}.frequency-track>div{height:100%;background:var(--accent);border-radius:5px}.frequency-numbers{display:flex;flex-direction:column;text-align:right;gap:5px;font-variant-numeric:tabular-nums}.frequency-numbers>strong{font-size:1.15rem;color:var(--accent)}.frequency-numbers>span,.frequency-numbers>small{font-size:.8rem;color:var(--muted)}.text-button{border:0;background:none;color:var(--accent);padding:0;text-align:left;font-weight:650;line-height:1.4}.insight-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.insight-grid p{margin-top:14px;font-size:.94rem}.statistics .card.guide{max-width:none}
@media(max-width:640px){.app-header{gap:8px}.header-links{gap:0}.header-links a{padding:7px 8px;font-size:.8rem}.brand{font-size:1rem}.brand img{width:32px;height:32px}.exam-countdown{padding:17px}.exam-countdown .eyebrow{font-size:.7rem}.countdown-units{gap:12px}.countdown-units strong{font-size:1.55rem}.history-metrics{gap:12px}.history-metrics strong{font-size:1.35rem}.history-metrics span{font-size:.8rem}.page-tabs{gap:7px}.page-tabs a{font-size:.84rem;padding:12px}.frequency-row{grid-template-columns:18px minmax(0,1fr) 85px;gap:10px}.frequency-topic strong,.text-button{font-size:.94rem}.frequency-numbers>span,.frequency-numbers>small{font-size:.75rem}.insight-grid{grid-template-columns:1fr;gap:0}.period-picker{width:100%}.period-picker button{flex:1}.scope-note{font-size:.875rem;padding:14px 16px}.study-links{gap:10px;justify-content:space-between;font-size:.82rem}#clock-time{font-size:.78rem;padding:10px}}
.header-links{flex-wrap:wrap;justify-content:flex-end}.statistics .card.guide>p{margin-top:15px}
.broad-overview .section-heading>a{font-size:.875rem;text-underline-offset:4px}.broad-part-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:20px}.broad-part-card{display:flex;flex-direction:column;gap:10px;padding:17px;border:1px solid var(--border);border-radius:12px;text-decoration:none;background:var(--soft);line-height:1.5}.broad-part-card>strong{font-size:1.15rem}.broad-part-card>span{color:inherit;font-size:.9rem}.broad-part-card>small{margin-top:auto;font-size:.8rem}.page-tabs{flex-wrap:wrap}@media(max-width:640px){.broad-part-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.broad-part-card{padding:14px}}@media(max-width:380px){.broad-part-grid{grid-template-columns:1fr}}