:root{--ink:#172c2b;--muted:#63716a;--paper:#f7f8f2;--green:#dced8b;--line:#dce2d7}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:Arial,Helvetica,sans-serif;font-size:16px;line-height:1.6}a{color:inherit;text-underline-offset:4px}header,main,footer{max-width:1320px;margin:auto}header{padding:28px 48px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{font-size:24px;font-weight:750;letter-spacing:-1px;display:flex;align-items:center;gap:5px;text-decoration:none}.brand>span:not(.brand-icon){font-weight:400}.brand-icon{background:var(--ink);color:var(--green);display:inline-grid;place-items:center;width:35px;height:35px;border-radius:9px;margin-right:8px;font-family:Georgia,serif}nav{display:flex;gap:30px;align-items:center}nav a{font-size:14px;text-decoration:none}.button,button{background:var(--ink);color:white;border:1px solid var(--ink);border-radius:7px;padding:14px 23px;display:inline-flex;align-items:center;justify-content:center;gap:24px;font:inherit;font-size:14px;font-weight:600;cursor:pointer;text-decoration:none}.button:hover,button:hover{background:#304c43}.button.small{padding:11px 18px}.button.light{background:var(--green);color:var(--ink);border-color:var(--green)}main{padding:0 48px}section{padding:64px 0}.hero{display:grid;grid-template-columns:1.15fr 1fr;gap:60px;align-items:center;padding:72px 0 55px}.eyebrow{font-size:11px;font-weight:700;letter-spacing:1.8px;margin:0 0 22px}.dot{display:inline-block;width:7px;height:7px;background:#68834c;border-radius:50%;margin-right:8px}h1,h2,h3{line-height:1.12;letter-spacing:-1.6px}h1{font-size:56px;font-weight:500;margin:14px 0 24px}.hero h1{font-size:clamp(42px,4.5vw,64px)}h1 em{font-family:Georgia,serif;font-weight:400;color:#607644}h2{font-size:34px;font-weight:500}h3{font-size:22px;letter-spacing:-.6px;font-weight:500}.lead{font-size:17px;line-height:1.8;max-width:470px;color:var(--muted)}.actions{display:flex;align-items:center;gap:24px;margin-top:30px}.text-link{font-size:13px;text-decoration:none}.micro{font-size:12px;color:var(--muted)}.hero-bottom{display:flex;gap:24px;padding-top:30px;margin-top:33px;border-top:1px solid var(--line);font-size:11px;color:var(--muted)}.hero-bottom span:before{content:'✓';margin-right:7px}.hero-art{background:#e4e9d9;min-height:490px;border-radius:13px;position:relative;overflow:hidden;padding:32px;display:flex;align-items:center;justify-content:center}.orbit{position:absolute;border:1px solid #b5c2a7;border-radius:50%;width:480px;height:480px;transform:rotate(-25deg)}.o2{width:310px;height:570px;transform:rotate(35deg)}.o3{width:570px;height:270px;transform:rotate(-40deg)}.art-label{position:absolute;top:25px;left:28px;font-size:9px;letter-spacing:2px}.preview-card{background:#fbfcf5;position:relative;width:100%;padding:30px;border-radius:9px;box-shadow:0 15px 45px #33493118;transform:rotate(-3deg)}.preview-card .eyebrow{font-size:9px;margin-bottom:18px}.preview-card h2{margin:0 0 27px;font-size:36px}.sample-line{border-top:1px solid var(--line);padding:14px 0;display:flex;gap:14px;font-size:12px}.sample-line span{color:#82916d}.sample-line b{margin-left:auto}.art-bottom{position:absolute;bottom:23px;left:28px;right:28px;display:flex;justify-content:space-between;font-size:9px;letter-spacing:2px}.art-bottom>span{font-size:25px;line-height:15px}.section-top{display:flex;align-items:center;justify-content:space-between;gap:30px}.section-top p{font-size:14px;color:var(--muted)}.section-top h2{margin:0 0 30px}.grid{display:grid;gap:20px}.three{grid-template-columns:repeat(3,1fr)}.two{grid-template-columns:repeat(2,1fr)}.card{border:1px solid var(--line);border-radius:9px;padding:28px;background:#fcfdf8}.card p{color:var(--muted);font-size:14px}.number{font-size:10px;letter-spacing:1.2px;color:#667b4f}.card h3{margin-top:25px}.exam-banner{margin:16px 0 70px;background:var(--ink);color:#fff;border-radius:12px;padding:42px;display:flex;justify-content:space-between;align-items:center;gap:25px}.exam-banner h2{margin:10px 0}.exam-banner p{font-size:14px;color:#d0d9cb}.pill{display:inline-block;background:#eaf0d9;color:#49613b;padding:4px 9px;border-radius:4px;font-size:10px;letter-spacing:1px}.auth{max-width:490px;margin:25px auto 65px}.auth h1{font-size:42px}form label{display:block;font-size:13px;font-weight:600;margin:19px 0 8px}input,textarea,select{font:inherit;font-weight:400;display:block;width:100%;border:1px solid #c8d1c1;border-radius:5px;padding:12px;margin-top:7px;background:#fff;color:var(--ink)}textarea{min-height:90px;resize:vertical}input:focus,textarea:focus,select:focus{outline:2px solid #758c4b;outline-offset:2px}form button{margin-top:18px}.alert{padding:18px;margin:20px 0;background:#ffe8dc;border:1px solid #c9a88e;border-radius:7px}.alert.success{background:#e3efce}.practice{max-width:850px;margin:auto}.practice h1{font-size:38px}fieldset{border:1px solid var(--line);border-radius:7px;padding:20px;margin:25px 0}legend{padding:0 10px;font-size:16px}.radio{display:inline-flex;align-items:center;gap:8px;margin-right:25px;font-weight:400}.radio input{width:auto;margin:0}.stats{margin:35px 0 50px}.stats strong{font-size:42px;font-weight:400}.tabs{border-bottom:1px solid var(--line);padding-bottom:20px;flex-wrap:wrap}.tabs .selected{font-weight:700;border-bottom:2px solid var(--ink)}.editor{margin:25px 0}.secondary{background:transparent;color:var(--ink);border:1px solid var(--line);padding:8px 14px}.secondary:hover{background:#e5eadc}.table-wrap{overflow:auto}table{border-collapse:collapse;width:100%;font-size:13px}th,td{text-align:left;border-bottom:1px solid var(--line);padding:15px}td form button{margin:0}.review{margin:25px 0}footer{padding:32px 48px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:25px}footer p{font-size:10px;color:var(--muted)}footer>div{display:flex;align-items:center;gap:18px;font-size:11px}footer form button{margin:0}a:focus-visible,button:focus-visible{outline:3px solid #869a4f;outline-offset:4px}@media(max-width:900px){header,footer{padding:24px}main{padding:0 24px}nav{gap:16px}.hero{gap:25px}.hero h1{font-size:43px}.actions{flex-wrap:wrap}.preview-card{padding:23px}.hero-art{padding:24px;min-height:460px}.hero-bottom{flex-wrap:wrap;gap:10px}.three{grid-template-columns:1fr}.section-top{align-items:flex-start}.card{padding:24px}footer{flex-wrap:wrap}}@media(max-width:650px){header{flex-wrap:wrap;gap:20px}header nav{justify-content:space-between;width:100%;gap:10px}header nav a{font-size:12px}.hero{grid-template-columns:1fr;padding-top:45px}.hero h1{font-size:47px}.hero-art{min-height:430px;margin-top:10px}.preview-card{max-width:360px}.section-top,.exam-banner{display:block}.two{grid-template-columns:1fr}section{padding:40px 0}.exam-banner{padding:28px}.exam-banner>div+div{margin-top:28px}h1{font-size:40px}.auth h1{font-size:36px}h2{font-size:29px}footer{display:block}footer>div{margin-top:20px}}
/* Radiology identity: navy, teal and a high-key chest radiograph. */
:root{--ink:#0b1d33;--muted:#566b7a;--paper:#fff;--green:#bfece6;--line:#dce6eb}body{background:#fff}.brand{letter-spacing:-1px;gap:4px}.brand-mark{display:block;margin-right:8px;width:40px;height:40px}header{border-bottom:0;padding-top:24px;padding-bottom:24px}.button,button{background:#0b1d33;border-color:#0b1d33}.button:hover,button:hover{background:#163b55}.button.light{background:#bfece6;border-color:#bfece6}.dot{background:#0c9f99}.number{color:#087b77}.pill{background:#e4f5f2;color:#087b77}.card{background:#fff;border-color:#dce6eb}.card h3{font-weight:600}.radiology-hero{display:block;position:relative;isolation:isolate;min-height:620px;padding:72px 48px 36px;margin:0 -48px;overflow:hidden;background:#eff5f8;border-radius:2px}.radiology-hero:before{content:'';position:absolute;inset:0;z-index:-2;background-image:url('/assets/xray-hero.png');background-size:auto 115%;background-position:right center;background-repeat:no-repeat}.radiology-hero:after{content:'';position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,#f2f7fa 0%,#f2f7fa 27%,rgba(242,247,250,.91) 43%,rgba(242,247,250,.2) 68%,rgba(242,247,250,0) 100%)}.hero-copy{max-width:620px}.hero h1{font-size:clamp(48px,5.7vw,76px);letter-spacing:-3px;line-height:1.04;font-weight:600;margin-bottom:24px}.hero h1 em{color:#087f7b;font-style:normal;font-family:inherit;font-weight:500}.hero .lead{max-width:450px;color:#4c6374;font-size:17px}.hero .eyebrow{color:#24455a;letter-spacing:2px}.hero .actions{gap:22px}.hero .hero-bottom{max-width:485px;border-color:#cddde5;padding-top:20px;margin-top:28px;color:#466277}.radiology-caption{position:absolute;right:32px;bottom:28px;display:flex;align-items:flex-end;gap:10px;flex-direction:column;font-size:8px;letter-spacing:1.8px;color:#547183}.scan-cross{font-size:27px;font-weight:300;line-height:1;color:#0c9f99}.exam-banner{background:#0b1d33}.exam-banner p{color:#c8dce5}.secondary{background:transparent;color:var(--ink);border-color:var(--line)}.secondary:hover{background:#eaf3f5}a:focus-visible,button:focus-visible,input:focus,textarea:focus,select:focus{outline-color:#0c9f99}footer{background:#f6f9fb}.auth{padding-top:48px}@media(max-width:900px){.radiology-hero{margin:0 -24px;padding:55px 28px 35px;min-height:600px}.radiology-caption{right:24px;bottom:22px}.hero-copy{max-width:540px}.hero h1{font-size:60px}.radiology-hero:before{background-position:calc(100% + 130px) center}.radiology-hero:after{background:linear-gradient(90deg,#f2f7fa 0%,rgba(242,247,250,.97) 32%,rgba(242,247,250,.65) 62%,rgba(242,247,250,.1) 100%)}}@media(max-width:650px){.radiology-hero{padding:44px 24px 125px;min-height:650px}.hero h1{font-size:52px;letter-spacing:-2px}.hero .lead{font-size:16px;max-width:340px}.radiology-hero:before{background-size:auto 88%;background-position:calc(100% + 230px) bottom;opacity:.75}.radiology-hero:after{background:linear-gradient(90deg,rgba(242,247,250,.98),rgba(242,247,250,.78) 65%,rgba(242,247,250,.35))}.radiology-caption{left:24px;right:auto;align-items:flex-start;bottom:25px;gap:4px}.hero .hero-bottom{max-width:300px;font-size:10px}.hero .actions{align-items:flex-start;gap:18px}.brand-mark{width:34px;height:34px}.brand{font-size:23px}}

/* Account-only header and revised physics headline. */
.account-nav{gap:30px}.account-link{--account-accent:#0c9f99;display:inline-flex;align-items:center;gap:9px;font-size:14px;font-weight:600;color:#0b1d33}.account-link svg{width:29px;height:29px;flex-shrink:0}.account-link:hover{color:#087f7b}.create-account{color:#087f7b}.create-account svg{width:30px;height:30px}.hero-copy{max-width:680px}.hero h1{font-size:clamp(43px,4.8vw,64px);line-height:1.08;letter-spacing:-2.5px}.hero h1 em{font-size:.78em;letter-spacing:-1.6px;display:inline-block}.hero .lead{max-width:530px;font-size:16px;line-height:1.8}.radiology-hero{min-height:680px}@media(max-width:900px){.hero h1{font-size:54px}.hero .lead{max-width:490px}}@media(max-width:650px){header .account-nav{width:auto;justify-content:flex-start;gap:25px}.account-nav .account-link{font-size:13px}.account-link svg{width:25px;height:25px}.hero h1{font-size:43px;letter-spacing:-1.8px}.hero h1 em{font-size:.73em;letter-spacing:-1px}.hero .lead{font-size:15px}.radiology-hero{min-height:760px}.hero-copy{max-width:100%}}@media(max-width:360px){.hero h1{font-size:37px}.account-nav{gap:18px}}

.syllabus-list{padding-left:18px;margin:20px 0 0;color:var(--muted);font-size:14px;line-height:1.9}.syllabus-list li{padding-left:3px}.account-nav .account-link{white-space:nowrap}
/* Question practice and marked review. */
.question-page{max-width:1120px}.question-page>.eyebrow{margin-top:30px}.question-card{margin-top:24px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:32px}.question-card h1,.question-card h2{font-size:26px;line-height:1.35;letter-spacing:-.6px;margin:0 0 12px;font-weight:600}.question-instruction{font-size:13px;color:var(--muted);margin:0 0 28px}.answer-row{display:grid;grid-template-columns:minmax(0,1fr) 200px 26px;gap:20px;align-items:center;padding:22px 0;border-top:1px solid var(--line)}.statement-text{display:flex;gap:12px;font-size:16px;line-height:1.6}.statement-letter{color:#087f7b;font-weight:700}.answer-options{display:grid;grid-template-columns:1fr 1fr;border:0;padding:0;margin:0;gap:8px;min-width:0}.answer-choice{position:relative;margin:0;cursor:pointer;font-size:15px}.answer-choice input{position:absolute;opacity:0;width:1px;height:1px;margin:0}.answer-choice>span,.review-choice>span{display:block;text-align:center;padding:10px 8px;border:1px solid #bccbd7;border-radius:6px;background:#f9fbfc;font-weight:600}.answer-choice input:checked+span,.review-choice.chosen>span{background:#d5eaff;color:#0d4e88;border-color:#4787c4;box-shadow:inset 0 0 0 1px #4787c4}.answer-choice input:focus-visible+span{outline:3px solid #0c9f99;outline-offset:3px}.answer-choice:hover>span{border-color:#4787c4}.review-choice small{display:block;text-align:center;font-size:10px;line-height:1.3;padding-top:6px;color:#08766b;min-height:20px;font-weight:700}.answer-mark{font-size:21px;font-weight:700;align-self:center}.answer-mark.right{color:#147b64}.answer-mark.wrong{color:#b34141}.statement-note{font-size:14px;line-height:1.7;background:#f4f8fa;padding:12px 16px;margin:0 0 12px;color:#486073}.question-actions{display:flex;justify-content:flex-end;margin-top:24px}.question-actions button{margin-top:0}.question-explanation{padding:30px;border-radius:10px;background:#f0f7f7;border-left:3px solid #0c9f99;margin-top:28px}.question-explanation h3{margin:0 0 15px}.question-explanation p{line-height:1.85}.question-explanation .eyebrow{margin-bottom:12px}.review-heading{display:flex;align-items:center;justify-content:space-between;margin-top:30px}.review-heading h1{font-size:34px;margin-bottom:0}.question-score{font-size:36px;color:#087f7b}.performance-panel{padding:48px 0 12px}.performance-panel h3{margin-top:0}.performance-panel .accuracy-value{font-size:40px;line-height:1.2;color:var(--ink);margin:20px 0}.performance-panel>.micro{margin-top:-10px;margin-bottom:25px}.score-scale,.peer-chart{width:100%;height:auto;max-height:200px}.score-scale text,.peer-chart text{font:12px Arial,sans-serif;fill:#566b7a}.band-low{fill:#f2d9d4}.band-mid{fill:#efe4bd}.band-high{fill:#bddfd3}.score-pointer{fill:#0b1d33}.peer-bar{fill:#7ab9c2}.peer-self{stroke:#0b1d33;stroke-width:3}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@media(max-width:700px){.question-card{padding:22px 18px}.question-card h1,.question-card h2{font-size:22px}.answer-row{grid-template-columns:1fr 24px;gap:12px;padding:20px 0}.statement-text{grid-column:1/-1;font-size:15px}.answer-options{grid-column:1;max-width:240px;width:100%}.answer-mark{grid-column:2}.question-explanation{padding:22px}.review-heading h1{font-size:29px}.question-score{font-size:30px}.performance-panel .grid.two{grid-template-columns:1fr}.performance-panel th,.performance-panel td{padding:12px 8px}}

.background-article{padding:30px 0}.background-article>p{line-height:1.9}.background-diagram{display:block;width:100%;height:auto}.background-article figure{margin:30px 0}.background-article figcaption{font-size:12px;color:var(--muted);margin-top:10px}.background-article li{overflow-wrap:anywhere;font-size:14px;margin-bottom:8px}
.member-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:40px;min-height:75vh;margin:10px 0 40px}.member-sidebar{background:#10273a;color:#edf4f7;border-radius:12px;padding:25px 20px;align-self:start;position:sticky;top:20px}.sidebar-label{font-size:10px;letter-spacing:1.5px;color:#a8bdca;margin:26px 0 10px}.sidebar-label:first-child{margin-top:0}.member-sidebar select{background:#19364b;color:white;border-color:#375367;font-size:13px;padding:10px}.member-nav{display:flex;flex-direction:column;align-items:stretch;gap:4px}.member-nav a{font-size:14px;padding:11px 0;text-decoration:none;display:flex;gap:11px;align-items:center}.member-nav a[aria-current=page]{border-bottom:2px solid #50cec1;color:#fff;font-weight:700}.member-nav a span{width:19px;color:#88dbd2}.member-content{min-width:0;padding:14px 0 40px}.member-content h1{font-size:34px;letter-spacing:-1px;margin:0 0 28px}.member-content h2{font-size:22px;letter-spacing:-.5px}.member-content section{padding-top:20px}.member-content .performance-panel{padding-top:0}.bank-summary{display:grid;grid-template-columns:1fr 150px;gap:35px;align-items:center;border-bottom:1px solid var(--line);padding-bottom:25px;margin-bottom:25px}.bank-summary h2{margin:0}.bank-summary p{font-size:14px;color:var(--muted)}.bank-summary strong{margin-left:10px;color:var(--ink)}progress{width:100%;height:16px;border:0;border-radius:12px;overflow:hidden;background:#e6edf1;accent-color:#0c9f99}progress::-webkit-progress-bar{background:#e6edf1;border-radius:12px}progress::-webkit-progress-value{background:#0c9f99;border-radius:12px}progress::-moz-progress-bar{background:#0c9f99;border-radius:12px}.bank-score{display:flex;flex-direction:column;align-items:center;gap:5px}.bank-score strong{font-size:36px;color:#0b6d70;margin:0}.bank-score small{font-size:10px;color:var(--muted)}.bank-start{display:flex;align-items:center;gap:24px;margin-bottom:30px}.bank-start button{margin:0}.bank-start span{font-size:14px}.category-option{display:flex;align-items:center;gap:12px;border-bottom:1px solid var(--line);padding:16px 5px!important;margin:0!important;cursor:pointer;font-size:14px}.category-option input{width:18px;height:18px;margin:0;accent-color:#0c9f99}.category-option small{margin-left:auto;color:var(--muted);font-size:11px;font-weight:400;white-space:nowrap}.category-option:has(input:checked){background:#eef8f7}.account-details{display:grid;grid-template-columns:170px 1fr;gap:20px;font-size:15px}.account-details dt{font-weight:600}.account-details dd{margin:0;overflow-wrap:anywhere}.reset-confirm{display:flex;gap:12px;align-items:flex-start;font-weight:400}.reset-confirm input{width:18px;flex-shrink:0;margin:3px 0 0}.danger{background:#963e3e;border-color:#963e3e}button:disabled{opacity:.45;cursor:not-allowed}.textbook-search{position:relative;margin:20px 0 35px}.textbook-search input{max-width:650px}#subject-suggestions:not(:empty){border:1px solid var(--line);background:white;box-shadow:0 8px 20px #10273a12;max-width:650px;padding:8px;border-radius:6px}#subject-suggestions a{display:block;padding:10px;text-decoration:none;border-bottom:1px solid var(--line)}#subject-suggestions a:hover{background:#eef8f7}.textbook-entry{display:flex;justify-content:space-between;gap:20px;padding:20px 0;border-bottom:1px solid var(--line);text-decoration:none;font-size:15px}.textbook-entry small{color:var(--muted);font-size:11px}.mock-clock{position:sticky;top:10px;z-index:2;background:#10273a;color:#fff;border-radius:6px;padding:12px;text-align:right;font-variant-numeric:tabular-nums}.mock-clock+form .question-actions{gap:15px}.peer-range{fill:#efe4bd;opacity:.65}.member-content .question-page{padding-top:0}.member-content .question-page h1{font-size:26px;line-height:1.4}.member-content .background-article h1{line-height:1.25}@media(max-width:1000px){.member-layout{grid-template-columns:200px minmax(0,1fr);gap:24px}.member-sidebar{padding:22px 14px}.bank-summary{gap:15px;grid-template-columns:1fr 110px}}@media(max-width:750px){.member-layout{grid-template-columns:1fr;gap:20px}.member-sidebar{position:static;border-radius:8px;padding:16px}.member-nav{flex-direction:row;flex-wrap:wrap;gap:5px 18px}.member-nav a{padding:6px 0;font-size:13px}.sidebar-label{margin:14px 0 6px}.member-sidebar select{max-width:320px}.member-content h1{font-size:29px}.bank-summary{grid-template-columns:1fr 90px;gap:15px}.bank-score strong{font-size:29px}.bank-score small{text-align:center}.category-option small{font-size:10px}.category-option{gap:8px;font-size:13px}.bank-start{gap:15px;flex-wrap:wrap}.account-details{grid-template-columns:1fr;gap:8px}.account-details dd{margin-bottom:16px}.textbook-entry{flex-direction:column;gap:6px}.member-content .table-wrap{max-width:100%}}

/* Member readability and category separation. */
.member-nav a{font-size:16px;line-height:1.5}.sidebar-label{font-size:12px;letter-spacing:1.1px}.member-sidebar select{font-size:15px}.member-sidebar{padding:25px 17px}.member-layout{grid-template-columns:260px minmax(0,1fr)}.member-content{font-size:17px;line-height:1.75}.member-content .card p{font-size:16px}.member-content .micro{font-size:14px}.bank-summary p,.bank-start span{font-size:16px}.bank-score small{font-size:12px}.category-option{font-size:16px;line-height:1.6}.category-option small{font-size:13px}.category-option.all-categories{border-bottom:2px solid #8ba9b7;padding-bottom:20px!important;margin-bottom:12px!important}.member-content table{font-size:15px}.member-content button,.member-content .button{font-size:16px}.textbook-entry{font-size:17px}.textbook-entry small{font-size:13px}.member-content .question-instruction{font-size:15px}.member-content .statement-text{font-size:17px}.member-content .statement-note{font-size:16px}.review-choice small{font-size:12px}.answer-choice{font-size:16px}.inline-background{border-top:1px solid var(--line);margin-top:36px;padding-top:30px}.inline-background>.background-article{padding-top:5px}.inline-background .background-article h1{font-size:28px}.inline-background .background-article li{font-size:15px}.inline-background .background-article figcaption{font-size:13px}@media(max-width:1000px){.member-layout{grid-template-columns:225px minmax(0,1fr);gap:24px}}@media(max-width:750px){.member-layout{grid-template-columns:1fr}.member-nav a{font-size:15px}.member-content{font-size:16px}.category-option{font-size:15px}.category-option small{font-size:12px}.member-content .statement-text{font-size:16px}.member-content table{font-size:14px}}

footer{max-width:none;width:100%;padding:0;background:#f6f9fb}.footer-inner{max-width:1320px;margin:auto;padding:32px 48px;display:flex;align-items:center;justify-content:space-between;gap:25px}.footer-inner>div{display:flex;gap:18px;font-size:13px}.session-control{margin:0}.session-control button{margin:0;font-size:14px;padding:9px 16px}.account-nav{gap:12px}.score-ring{position:relative;width:118px;min-height:140px;display:flex;align-items:center;flex-direction:column;justify-content:flex-end;flex-shrink:0}.score-ring svg{position:absolute;top:0;left:4px;width:110px;height:110px}.ring-track{fill:none;stroke:#e2ebef;stroke-width:7}.ring-value{fill:none;stroke:#0c9f99;stroke-width:7;stroke-linecap:round}.score-ring strong{position:absolute;top:32px;left:0;right:0;text-align:center;font-size:27px;font-weight:600;color:#0b1d33;line-height:1.5}.score-ring>span{font-size:13px;font-weight:600;text-align:center;padding-bottom:5px}.bank-score .score-ring strong{font-size:27px}.review-heading{gap:25px}.review-heading .eyebrow{margin-bottom:15px}@media(max-width:750px){.footer-inner{padding:28px 24px;flex-wrap:wrap}.footer-inner>div{width:100%}.account-nav .session-control button{font-size:13px;padding:8px 12px}.score-ring{width:106px}.score-ring svg{left:0;width:106px}.score-ring strong{font-size:25px}.review-heading{align-items:center}}
/* Full-bleed homepage hero with aligned content. */
.radiology-hero{width:100vw;margin-left:calc(50% - 50vw);margin-right:calc(50% - 50vw);padding-left:max(48px,calc((100vw - 1224px)/2));padding-right:max(48px,calc((100vw - 1224px)/2));border-radius:0}.radiology-hero .radiology-caption{right:max(32px,calc((100vw - 1256px)/2))}@media(max-width:900px){.radiology-hero{padding-left:28px;padding-right:28px}}@media(max-width:650px){.radiology-hero{padding-left:24px;padding-right:24px}.radiology-hero .radiology-caption{right:auto;left:24px}}

.bank-start-button{background:#4bcac3;color:#0b1d33;border:1px solid #4bcac3;border-radius:10px;font-weight:700;padding:13px 24px}.bank-start-button:hover{background:#73d8d2;color:#0b1d33;border-color:#73d8d2}.bank-bottom-start{display:flex;justify-content:flex-end;padding-top:24px}.bank-bottom-start button{margin:0}

.background-article h2{font-size:23px;line-height:1.35;margin:32px 0 14px;font-weight:650}.background-article p{margin:0 0 18px}.background-article ul,.background-article ol{padding-left:25px;margin:14px 0 24px}.background-article li{font-size:17px;line-height:1.8;margin-bottom:12px}.background-article strong{font-weight:700;color:#0b1d33}.inline-background .background-article li{font-size:17px}@media(max-width:650px){.background-article li,.inline-background .background-article li{font-size:16px}.background-article h2{font-size:21px}}

.google-login-form .google-signin{width:100%;background:white;color:#1f1f1f;border:1px solid #747775;border-radius:6px;font-family:Arial,sans-serif;font-size:15px;font-weight:600;padding:14px 20px}.google-login-form .google-signin:hover{background:#f2f6f8}.signin-divider{display:flex;align-items:center;gap:16px;color:#667681;font-size:12px;margin:24px 0}.signin-divider:before,.signin-divider:after{content:'';height:1px;background:#dce6eb;flex:1}

.auth .email-code-button{width:100%}

.exam-info h2{margin-top:2.5rem}.exam-info-links{display:flex;flex-wrap:wrap;gap:1.5rem;margin:2rem 0}.exam-table-wrap{overflow-x:auto}.exam-info table{width:100%;border-collapse:collapse;min-width:430px}.exam-info caption{text-align:left;color:#506575;padding:0 0 1rem}.exam-info th,.exam-info td{text-align:left;padding:1rem;border-bottom:1px solid #dce6eb}.exam-info thead,.exam-info tfoot{background:#eef7f7}.exam-info .card h3{font-size:1.4rem}

.background-table{width:100%;border-collapse:collapse;margin:18px 0 26px;font-size:16px}.background-table th,.background-table td{padding:12px 14px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}.background-table th{background:#eef7f7;font-weight:700}.background-article h3{font-size:20px;line-height:1.4;margin:26px 0 12px}.background-article .table-wrap{max-width:100%;overflow-x:auto}.background-table td{min-width:110px}

.background-article nav.related-backgrounds{display:block;width:100%;margin:30px 0;position:static}.background-article .related-backgrounds h2{margin:0 0 14px}.background-article .related-backgrounds ul{display:block;margin:0 0 24px;padding-left:25px}.background-article .related-backgrounds li{display:list-item;margin:0 0 10px}.background-article .related-backgrounds a{color:#087e7b;text-decoration:underline;text-underline-offset:3px}
/* Textbook reading layout */
body:has(.standalone-reader){background:#f5f8f9}body:has(.textbook-reader)>header{max-width:none;width:100%;border-bottom:1px solid #e0e8ed;background:white}
.member-content:has(.standalone-reader)>section.practice{max-width:none;padding-top:28px}.textbook-reader{min-width:0}.standalone-reader{display:grid;grid-template-columns:minmax(0,780px) 190px;gap:40px;align-items:start;margin-top:24px}.textbook-reader .background-article{min-width:0;max-width:780px;width:100%;padding:0}.article-heading{display:block;background:none;padding:0 0 28px;border:0;border-bottom:1px solid #dce6eb;margin:0}.article-heading .eyebrow{color:#087e79;font-size:12px;font-weight:750;letter-spacing:.13em;margin:0 0 14px}.textbook-reader .article-heading h1{font-size:clamp(28px,3vw,38px);font-weight:750;line-height:1.2;letter-spacing:-.035em;margin:0;color:#12283b}.textbook-reader .learning-section{padding:26px 0 12px;margin:0;border-bottom:1px solid #dce6eb;scroll-margin-top:24px}.textbook-reader .learning-section h2{font-size:24px;margin:0 0 15px;font-weight:750;letter-spacing:-.02em}.textbook-reader .learning-section h3{font-size:20px;margin:24px 0 12px}.textbook-reader .background-article p,.textbook-reader .background-article li{font-size:18px;line-height:1.75}.textbook-reader .background-article p{margin:0 0 18px}.textbook-reader .background-article li{margin-bottom:12px}.textbook-reader .background-article strong{font-weight:700}.textbook-reader .learning-section.examination-callout{background:#e2f3f0;border:1px solid #cce8e3;border-radius:14px;padding:24px 26px;margin:28px 0}.textbook-reader .examination-callout h2{color:#087c76;font-size:14px;letter-spacing:.09em;text-transform:uppercase}.textbook-reader .examination-callout ul{margin-bottom:0}.background-crossref{color:#087c76;background:transparent;border-radius:0;padding:0;text-decoration:none;border-bottom:0;font-size:.94em}.background-crossref:hover{background:transparent;text-decoration:underline;text-underline-offset:3px}.background-crossref:focus-visible,.article-toc a:focus-visible{outline:2px solid #087c76;outline-offset:3px}
.textbook-reader nav.related-backgrounds{display:block;margin:28px 0;padding:0}.textbook-reader .related-backgrounds h2{font-size:23px;margin:0 0 16px}.textbook-reader .related-backgrounds ul{display:flex;flex-wrap:wrap;list-style:none;gap:10px;padding:0;margin:0}.textbook-reader .related-backgrounds li{display:block;margin:0;font-size:15px;line-height:1.5}.textbook-reader .related-backgrounds a{display:block;background:white;border:1px solid #c5dedb;border-radius:20px;padding:8px 14px;color:#087c76;text-decoration:none}.textbook-reader .related-backgrounds a:hover{background:#e2f3f0}.article-references{border-top:1px solid #dce6eb;padding-top:24px;margin-top:28px}.textbook-reader .article-references h2{font-size:20px;margin:0 0 14px}.textbook-reader .article-references li{font-size:15px;color:#516574;overflow-wrap:anywhere}.article-toc{position:sticky;top:28px;padding-top:8px}.article-toc summary{color:#516574;text-transform:uppercase;letter-spacing:.1em;font-size:11px;font-weight:750;list-style:none;margin-bottom:14px;cursor:pointer}.article-toc nav{display:flex;flex-direction:column;align-items:stretch;gap:0;border-left:2px solid #d8e3e7}.article-toc a{font-size:13px;line-height:1.5;color:#516574;text-decoration:none;padding:8px 0 8px 13px;margin-left:-2px;border-left:2px solid transparent}.article-toc a[aria-current="location"],.article-toc a:hover{border-color:#098c83;color:#087c76;background:#e9f5f2}.article-pagination{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:34px 0}.article-pagination a{display:block;border:1px solid #cedee5;border-radius:12px;background:white;padding:16px;text-decoration:none;min-width:0}.article-pagination a:last-child{background:#112b3c;border-color:#112b3c}.article-pagination small{display:block;font-size:12px;color:#516574;margin-bottom:6px}.article-pagination strong{display:block;font-size:15px;line-height:1.4}.article-pagination a:last-child strong,.article-pagination a:last-child small{color:#eef8f7}.inline-reader{max-width:780px}.inline-reader .article-heading h1{font-size:28px}
.member-sidebar .member-nav a[aria-current="page"]{background:#1d3b50;border-radius:8px;border-bottom:2px solid #50c7be;padding-left:14px;color:white}.member-sidebar{position:sticky;top:22px;align-self:start;max-height:calc(100vh - 44px);overflow-y:auto}.member-content:has(.standalone-reader)>section.practice>a{color:#087c76;font-size:15px;text-decoration:none}
@media(min-width:1450px){.member-layout:has(.standalone-reader){max-width:1600px;grid-template-columns:250px minmax(0,1fr);gap:44px}}
@media(max-width:1190px){.standalone-reader{grid-template-columns:minmax(0,1fr)}.article-toc{grid-row:1;position:static;padding:16px 18px;background:#eaf4f2;border:1px solid #d2e8e2;border-radius:10px}.article-toc summary{margin:0}.article-toc details[open] summary{margin-bottom:10px}.article-toc nav{max-height:230px;overflow-y:auto}.standalone-reader{gap:24px}}
@media(max-width:750px){.member-sidebar{position:static;max-height:none;overflow:visible}.textbook-reader .background-article p,.textbook-reader .background-article li{font-size:17px;line-height:1.7}.textbook-reader .learning-section.examination-callout{padding:20px}.article-pagination{grid-template-columns:1fr}.article-pagination span:empty{display:none}.textbook-reader .article-heading h1{font-size:29px}.textbook-reader .learning-section h2{font-size:22px}}

.article-heading .eyebrow{text-transform:uppercase}.member-nav a>span{display:inline-flex;align-items:center;justify-content:center;flex:0 0 20px;width:20px}.member-nav a>span svg{display:block;width:20px;height:20px}
.textbook-reader .article-heading .eyebrow{font-size:12px;line-height:1.5}.textbook-reader .learning-section.examination-callout h2{font-size:13px;line-height:1.5}