:root{font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#182c33;background:#f5f7f8;font-synthesis:none;--ink:#0e4653;--line:#dce4e7}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}a{color:inherit}header{max-width:1160px;margin:auto;padding:25px 36px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px;font-size:23px;font-weight:750;text-decoration:none;letter-spacing:-.5px}.mark{display:grid;place-items:center;background:var(--ink);color:white;width:42px;height:46px;border-radius:7px;font-family:Georgia,serif;font-size:31px}.brand-sub{display:block;font-size:12px;letter-spacing:.6px;text-transform:uppercase;color:#63737b;font-weight:550;margin-top:2px}.private{font-size:13px;color:#53656b;border:1px solid #cbd8de;border-radius:20px;padding:7px 12px}main{max-width:1088px;margin:0 auto;padding:46px 0 64px;min-height:75vh}h1{font-family:Georgia,"Times New Roman",serif;font-size:44px;font-weight:400;letter-spacing:-1.3px;line-height:1.15;margin:10px 0 14px}p{line-height:1.65}.eyebrow{text-transform:uppercase;letter-spacing:1.8px;font-size:12px;font-weight:700;color:#486b78}.intro{color:#5e7078;margin:0 0 26px;font-size:17px}.section-nav{display:flex;gap:8px;flex-wrap:wrap;margin:25px 0 34px}.section-nav a{padding:10px 18px;border-radius:6px;border:1px solid var(--line);text-decoration:none;background:white;font-size:15px}.section-nav a:hover{border-color:var(--ink)}.section-title{display:flex;justify-content:space-between;align-items:baseline;border-bottom:2px solid var(--ink);padding-bottom:15px;margin-top:36px;gap:10px}.section-title h2{font-size:23px;font-weight:650;margin:0}.muted,.section-title span{color:#61737b;font-size:14px}.category-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 28px}.category{display:block;position:relative;text-decoration:none;padding:23px 26px 23px 0;border-bottom:1px solid var(--line);min-height:126px;transition:color .15s}.category:hover{color:#08758b}.category small{display:block;font-size:12px;letter-spacing:.5px;color:#6e8087;margin-bottom:8px}.category strong{display:block;font-weight:600;font-size:17px;line-height:1.4}.category .count{display:block;font-size:13px;color:#667a82;margin-top:8px}.category:after{content:'›';position:absolute;right:5px;top:51px;font-size:26px;color:#69858e}.other-section{margin-top:48px}.back{display:inline-block;color:#426873;text-decoration:none;margin-bottom:24px;font-size:14px}.reader{max-width:810px;margin:0 auto}.reader h1{font-size:36px}.reader-bar{display:flex;justify-content:space-between;align-items:center;gap:12px;margin:25px 0 17px}.reader-bar label{font-size:14px;color:#5b6b73}.reader-bar select{padding:8px 10px;border:1px solid #c5d2d8;background:white;border-radius:5px;color:#223f49}.question-card{background:white;border:1px solid var(--line);border-top:4px solid var(--ink);border-radius:7px;padding:30px 34px}.source-meta{font-size:13px;line-height:1.6;color:#64747d;margin:0 0 25px}.question-card h2{font-size:15px;color:#456a75;margin:20px 0 12px}.prose{font-size:17px;line-height:1.75;white-space:pre-wrap;overflow-wrap:anywhere}.options{border:0;margin:24px 0;padding:0;min-width:0}.option{display:flex;align-items:flex-start;gap:12px;padding:14px 16px;margin:9px 0;border:1px solid #d5e0e5;border-radius:5px;cursor:pointer;font-size:16px;line-height:1.6}.option:hover{border-color:#5e929f}.option:has(input:checked){border-color:var(--ink);background:#edf6f8}.option input{margin:6px 0 0;accent-color:var(--ink);width:17px;height:17px;flex-shrink:0}.letter{font-weight:650;color:#446772}.option-text{white-space:pre-wrap;overflow-wrap:anywhere}.calc-input{display:block;margin:22px 0;font-size:15px;line-height:1.6}.calc-input input{display:block;width:min(100%,320px);padding:12px;border:1px solid #b7cbd3;border-radius:5px;margin:10px 0}.button,button{display:inline-block;background:var(--ink);color:white;border:1px solid var(--ink);border-radius:5px;padding:12px 20px;cursor:pointer;font-weight:600;font-size:15px;min-height:45px}button:hover{background:#176276}button:disabled{opacity:.35;cursor:default}.secondary{background:transparent;color:var(--ink);border-color:#b9cbd1}.secondary:hover{background:#e9f0f3}.navigation{display:flex;justify-content:space-between;gap:15px;margin-top:22px}.answer{border-top:1px solid #c5dadf;margin-top:26px;padding-top:12px}.answer-title{color:var(--ink);font-size:18px;font-weight:650}.answer .prose{font-size:16px}.answer-box{background:#eff6f8;border-left:3px solid #3e7888;padding:16px;margin:14px 0}.notice{background:#fff6df;color:#73591f;border:1px solid #e9d8a9;border-radius:5px;padding:12px 15px;font-size:14px;line-height:1.6;margin:16px 0}.note-added{background:#fff0bd;color:#674d15}details{border-top:1px solid var(--line);padding:15px 0}summary{font-size:14px;color:#486976;cursor:pointer;font-weight:600}details .prose{margin-top:14px;font-size:15px}footer{max-width:1088px;margin:auto;border-top:1px solid var(--line);padding:22px 0 30px;display:flex;justify-content:space-between;gap:15px;color:#6a7c83;font-size:12px}.skip{position:fixed;top:-80px;background:white;padding:12px;z-index:10}.skip:focus{top:5px}:focus-visible{outline:3px solid #d89928;outline-offset:4px}main:focus{outline:none}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.loading{padding:25px}.table-wrap{overflow-x:auto;max-width:100%;margin:16px 0}table{border-collapse:collapse;min-width:100%;font-size:14px;line-height:1.5}td,th{border:1px solid var(--line);padding:9px;text-align:left;white-space:normal;min-width:85px}th{background:#eff4f6}.text-block{white-space:pre-wrap}
@media(max-width:1160px){main,footer{margin-left:36px;margin-right:36px}}@media(max-width:780px){.category-grid{grid-template-columns:repeat(2,minmax(0,1fr))}h1{font-size:38px}.question-card{padding:24px}.reader h1{font-size:32px}}@media(max-width:480px){header{padding:19px 20px}main{padding-top:30px;margin-left:20px;margin-right:20px}footer{margin:0 20px;flex-direction:column;gap:6px}.category-grid{grid-template-columns:1fr}.category{min-height:0;padding:19px 25px 19px 0}.category:after{top:38px}.section-title{margin-top:30px}.section-title h2{font-size:21px}.section-title span{font-size:12px}.question-card{padding:20px 16px}.reader-bar{flex-wrap:wrap}.prose{font-size:16px}h1{font-size:35px}.private{font-size:12px}.section-nav a{padding:9px 13px;font-size:14px}.option{padding:12px;gap:9px}}

.study-progress{margin:24px 0 12px}.progress-heading{display:flex;justify-content:space-between;gap:12px;font-size:14px;margin-bottom:10px}.progress-heading span{color:#526970}.progress-track{height:10px;border-radius:20px;overflow:hidden;background:#dce6ea}.progress-track>span{display:block;height:100%;background:#0e6476;transition:width .2s}.score-counts{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:14px;margin-top:12px;color:#596e76}.score-correct{color:#17653a;font-weight:650}.score-incorrect{color:#a52e33;font-weight:650}.progress-tools{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:12px;color:#62757e}.text-button{background:none!important;border:0;padding:7px 0;min-height:36px;color:#486976;font-size:12px;font-weight:500;text-decoration:underline}.result{padding:13px 16px;border-radius:5px;margin:16px 0;font-weight:650;font-size:16px}.result:empty{display:none}.result.correct,.option.is-correct,.calc-input input.is-correct{background:#e8f6ee;border:1px solid #258452;color:#145c34}.result.incorrect,.option.is-incorrect,.calc-input input.is-incorrect{background:#fff0f0;border:1px solid #c34248;color:#96292e}.result.neutral{background:#edf2f5;color:#435d69}.option:has(input:disabled){cursor:default}.option.is-correct .letter{color:#145c34}.option.is-incorrect .letter{color:#96292e}.option input:disabled{opacity:1}.calc-input input:disabled{opacity:1;-webkit-text-fill-color:currentColor}.compact{max-width:620px;margin:18px 0 4px}.compact .progress-track{height:6px}@media(max-width:480px){.score-counts{gap:8px 14px;font-size:13px}.progress-tools{flex-wrap:wrap}.progress-heading{font-size:13px}#check-answer,#reveal{margin-bottom:8px}}

[hidden]{display:none!important}.option.is-correct:has(input:checked){background:#e8f6ee;border-color:#258452;color:#145c34}.option.is-incorrect:has(input:checked){background:#fff0f0;border-color:#c34248;color:#96292e}

.account-bar{display:flex;align-items:center;gap:14px;font-size:13px;overflow-wrap:anywhere}.auth-card{max-width:480px;margin:50px auto;padding:30px;background:white;border:1px solid var(--line);border-radius:8px}.auth-card h1{font-size:34px}.auth-card p{color:#536a74;font-size:15px}.auth-card label{display:block;margin:18px 0;font-size:15px}.auth-card input{display:block;width:100%;margin-top:8px;padding:12px;border:1px solid #b5cad1;border-radius:5px}.auth-links{display:flex;justify-content:space-between;gap:20px}.auth-card .auth-small{font-size:12px;line-height:1.6}.auth-card #account-message{color:#845728}.progress-tools{flex-wrap:wrap}body:has(#main[hidden]) main{display:none}@media(max-width:540px){.auth-card{margin:25px 20px;padding:23px}.account-bar{max-width:48%;font-size:12px;flex-wrap:wrap;gap:2px}}

/* PRW study workspace */
:root{--ink:#184f44;--line:#e2e6e1;color:#22352e;background:#fafbf8;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}header{max-width:none;padding:18px 32px;background:#fff;border-bottom:1px solid var(--line);height:80px}.brand{font-size:22px;gap:10px}.mark{width:36px;height:39px;border-radius:5px;font-size:28px}.brand-sub{font-size:10px;letter-spacing:1.2px;color:#7d8981}.account-bar{color:#5b6961}.account-bar .text-button{color:var(--ink);text-decoration:none;font-weight:600;border-left:1px solid var(--line);padding-left:16px}main{max-width:none;margin:0!important;padding:0;min-height:calc(100vh - 140px)}h1{font-family:inherit;font-size:36px;font-weight:650;letter-spacing:-1.2px;margin:12px 0;line-height:1.2}.eyebrow{font-size:11px;text-transform:none;letter-spacing:.3px;color:#748177;font-weight:500}.intro{font-size:15px;color:#738076;line-height:1.6;margin:0}.study-shell{display:grid;grid-template-columns:268px minmax(0,1fr);min-height:calc(100vh - 80px)}#topic-navigation{background:#f1f4ef;border-right:1px solid var(--line)}.sidebar{position:sticky;top:0;max-height:100vh;overflow-y:auto;padding:30px 16px 24px;scrollbar-width:thin}.sidebar-caption{font-size:10px;letter-spacing:1.8px;color:#859086;font-weight:650;padding:0 12px 22px}.nav-group{border:0;padding:0;margin:0 0 9px}.nav-group>summary{display:flex;align-items:center;gap:10px;list-style:none;padding:12px 10px;font-size:14px;font-weight:650;color:#34483b;border-radius:6px}.nav-group>summary::-webkit-details-marker{display:none}.nav-group>summary:hover{background:#e6ece3}.nav-number{font-size:10px;color:#81927e;font-variant-numeric:tabular-nums}.nav-chevron{margin-left:auto;font-weight:400}.nav-group[open] .nav-chevron{transform:rotate(180deg)}.topic-link,.section-link{display:flex;gap:8px;align-items:center;justify-content:space-between;text-decoration:none;border-radius:5px;padding:9px 12px 9px 31px;margin:2px 0;font-size:12px;line-height:1.4;color:#67766b}.topic-link small{font-size:10px;color:#88968b;font-variant-numeric:tabular-nums}.topic-link:hover,.section-link:hover{background:#e7ede4;color:#223e2e}.topic-link.active,.section-link.active{background:#dfe9dc;color:#1c513c;font-weight:650}.topic-link.active small{color:#315d3e}.sidebar-note{border-top:1px solid #dce3d8;margin:28px 12px 0;padding-top:20px;color:#73836f;font-size:11px;line-height:1.7}.sidebar-note span{display:block;color:#99a394}.workspace{padding:40px clamp(24px,4vw,72px) 64px;min-width:0;max-width:1400px;width:100%;margin:0 auto}.workspace-heading{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-bottom:28px}.library-count{font-size:14px;font-weight:600;text-align:right;white-space:nowrap}.library-count span{display:block;margin-top:7px;color:#7c887e;font-size:12px;font-weight:400}.overview-progress{padding:22px 26px;background:#fff;border:1px solid var(--line);border-radius:10px}.overview-progress h2{font-size:13px;font-weight:600;margin:0;color:#68776b}.overview-progress .study-progress{margin:16px 0 0}.progress-heading{font-size:13px}.progress-heading strong{font-weight:600}.progress-heading span{color:#7d897e}.progress-track{height:6px;background:#ecf0e9}.progress-track>span{background:#4c7958}.score-counts{gap:22px;font-size:12px;margin-top:14px}.score-correct{color:#397a4b}.score-incorrect{color:#b6524e}.topics-heading{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin:32px 0 12px}.topics-heading h2{font-size:16px;margin:0;font-weight:600}.topics-heading>span{font-size:11px;color:#8a958b}.topic-list{border-top:1px solid var(--line)}.topic-row{display:flex;gap:18px;align-items:center;padding:20px 8px;text-decoration:none;border-bottom:1px solid var(--line);transition:background .15s}.topic-row:hover{background:#f0f4ec}.topic-index{width:26px;flex-shrink:0;font-size:11px;color:#94a08f;font-variant-numeric:tabular-nums}.topic-name{flex:1;min-width:0}.topic-name strong{font-size:15px;font-weight:550;line-height:1.5;display:block}.topic-name small{display:block;color:#8b958b;font-size:11px;margin-top:5px}.topic-completion{width:90px;font-size:10px;color:#85917f;text-align:right}.mini-track{display:block;height:3px;background:#e5eadf;margin-top:8px;border-radius:4px;overflow:hidden}.mini-track i{display:block;height:100%;background:#6b8b63}.topic-arrow{font-size:19px;color:#73916b;margin-left:14px}.reader{max-width:900px;margin:0 auto}.reader h1{font-size:30px;font-family:inherit;font-weight:600}.back{font-size:12px;margin-bottom:24px;color:#70856c}.reader>.study-progress,#study-progress{background:white;border:1px solid var(--line);padding:0 22px 12px;border-radius:8px;margin-top:24px}.progress-tools{justify-content:flex-start;margin:8px 0 24px;color:#809079}.progress-tools #save-status{margin-right:auto}.text-button{font-size:11px;color:#72856c}.reader-bar{font-size:12px;margin:18px 0 14px}.reader-bar label,.reader-bar .muted{font-size:12px}.question-card{border-top:1px solid var(--line);border-radius:10px;padding:30px 34px;box-shadow:0 3px 15px #20351d03}.source-meta{font-size:11px;color:#85907e;padding-bottom:20px;border-bottom:1px solid #edf0e9;margin-bottom:24px;line-height:1.8}.prose{font-size:16px;line-height:1.8;color:#354036}.option{font-size:14px;border-color:#e0e6da;border-radius:6px;padding:13px 16px}.option:hover{background:#f6f8f2;border-color:#98aa8c}.option:has(input:checked){background:#f0f5eb;border-color:#66835a}.letter{color:#7c8c72}button{border-radius:6px;font-size:13px;padding:11px 18px}button:hover{background:#276750}.secondary{border-color:#d7dfd0;color:#4d6946;background:white}.secondary:hover{background:#edf3e7}.answer-box{background:#f3f7ed;border-color:#819c6f}.answer .prose{font-size:15px}.navigation{margin-top:18px}.auth-card{margin:70px auto;border-radius:12px;padding:38px;box-shadow:0 8px 40px #23391c06}.auth-card h1{font-family:inherit;font-size:30px}.auth-card .eyebrow{text-transform:uppercase;letter-spacing:1.5px;font-size:10px}.auth-card input{border-color:#d4dece;border-radius:6px}.auth-card button[type=submit]{width:100%}.auth-card .auth-small{color:#87927f}footer{max-width:none;margin:0!important;padding:20px 32px;background:white;font-size:10px;color:#8c9885}.topics-toggle{display:none}
@media(min-width:1500px){.workspace{padding-top:52px}.topic-row{padding-top:23px;padding-bottom:23px}}
@media(max-width:1000px){.study-shell{grid-template-columns:235px minmax(0,1fr)}.workspace{padding:30px 24px 50px}.workspace-heading{align-items:flex-start}.library-count{display:none}h1{font-size:30px}.question-card{padding:24px}}
@media(max-width:720px){header{height:auto;min-height:72px;padding:16px 20px}.brand{font-size:20px}.brand-sub{font-size:9px}.account-bar{max-width:48%;font-size:10px;gap:4px;flex-direction:column;align-items:flex-end}.account-bar .text-button{border:0;padding:0}.study-shell{display:block}.topics-toggle{display:block;margin:18px 20px 0;font-size:12px;min-height:40px}.study-shell>#topic-navigation{display:none}.study-shell.topics-open>#topic-navigation{display:block;margin-top:14px;border-bottom:1px solid var(--line)}.sidebar{position:static;max-height:60vh;padding-top:20px}.workspace{padding:26px 20px 40px}.workspace-heading{margin-bottom:22px}h1{font-size:29px}.reader h1{font-size:26px}.overview-progress{padding:20px}.topics-heading>span{display:none}.topic-row{gap:12px;padding:18px 0}.topic-index{width:21px}.topic-name strong{font-size:14px}.topic-completion{width:54px}.topic-arrow{margin-left:0;font-size:16px}.question-card{padding:22px 18px}.prose{font-size:15px}.reader-bar{flex-wrap:wrap}.progress-tools{gap:8px 16px}.score-counts{font-size:11px;gap:9px 15px}.auth-card{margin:35px 20px;padding:28px}.reader .back{margin-bottom:20px}footer{padding:20px;flex-direction:column;gap:5px}}