:root{--ink:#1b3449;--paper:#f8f7f3;--white:#fffefa;--line:#d5d1c8;--muted:#626f77;--orange:#bd6038;--gold:#c59a42;--soft:#eeebe4;--feedback:#254f85}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font:1.125rem/1.65 "DM Sans",Arial,sans-serif}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,[tabindex]:focus-visible{outline:3px solid #a65b25;outline-offset:4px}h1,h2,h3,h4{font-family:Manrope,Arial,sans-serif;line-height:1.2}p{margin-top:0}button{color:inherit}a:hover{color:#9f4927}.skip-link{position:fixed;top:-80px;left:16px;z-index:100;background:var(--ink);color:#fff;padding:12px 20px}.skip-link:focus{top:10px}.course-container{width:min(1180px,calc(100% - 64px));margin-inline:auto}.course-header{height:116px;padding-inline:max(calc((100vw - 1180px)/2),32px);display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:24px}.course-header img{width:auto;height:96px;object-fit:contain;display:block}.course-header nav{display:flex;align-items:center;gap:30px;font-size:1rem;font-weight:600}.support-link{border-bottom:1px solid var(--gold);padding-bottom:5px}.support-link span{margin-left:14px}.course-hero{padding:25px 0 35px;background:#ece8df;border-bottom:1px solid var(--line)}.breadcrumb{display:flex;flex-wrap:wrap;gap:12px;font-size:0.875rem;color:var(--muted);margin-bottom:45px}.breadcrumb a{text-decoration:underline;text-underline-offset:4px}.course-hero-grid{display:grid;grid-template-columns:1fr 310px;gap:80px;align-items:center}.eyebrow{font-size:0.875rem;letter-spacing:1.6px;text-transform:uppercase;font-weight:700;color:#a54c2a;margin-bottom:14px}h1{margin:0 0 17px;font-size:clamp(48px,6vw,76px);letter-spacing:-3px}.hero-description{max-width:625px;font-size:18px;line-height:1.65;color:#52636f;margin:0}.course-switch>p{font-size:0.875rem;font-weight:700;margin-bottom:10px}.course-switch nav{display:flex;gap:8px}.course-switch a{flex:1;background:var(--paper);border:1px solid #cfc8bb;padding:14px;font-size:1rem;font-weight:700;display:flex;align-items:center;justify-content:space-between;gap:15px}.course-switch a[aria-current="page"]{background:var(--ink);color:white;border-color:var(--ink)}.course-switch small{display:block;margin-top:10px;color:#65717b;font-size:0.875rem}.course-path{display:flex;flex-wrap:wrap;gap:17px;margin-top:38px;font-size:0.875rem;font-weight:700;letter-spacing:.3px}.course-path i{color:#a8884b;font-style:normal}.explorer{padding:42px 0 60px}.explorer-tabs{display:flex;gap:27px;border-bottom:1px solid var(--line);margin-bottom:32px;overflow-x:auto}.explorer-tabs button{padding:0 0 17px;border:0;border-bottom:3px solid transparent;background:none;white-space:nowrap;font-size:1rem;color:#65717b;font-weight:600}.explorer-tabs button[aria-selected="true"]{color:var(--ink);border-bottom-color:var(--orange)}.explorer-tabs button:focus-visible{outline-offset:-3px}#course-content{min-height:400px}.preview-note{padding:16px 20px;border-left:3px solid var(--gold);background:var(--soft);font-size:0.875rem;color:#576772;margin-bottom:28px}.preview-note a{text-decoration:underline}.unit-layout{display:grid;grid-template-columns:290px 1fr;gap:35px}.unit-sidebar h2{font-size:0.875rem;margin:0 0 4px}.unit-sidebar>p{font-size:0.875rem;color:var(--muted);margin-bottom:18px}.unit-list{display:flex;flex-direction:column}.unit-list button{display:flex;align-items:center;gap:15px;text-align:left;padding:14px 12px;border:0;border-top:1px solid var(--line);background:none;font-size:0.875rem;line-height:1.45}.unit-list button:last-child{border-bottom:1px solid var(--line)}.unit-list button>span:first-child{color:#8c8c80;font-size:0.875rem;font-weight:700;flex-shrink:0}.unit-list button[aria-pressed="true"]{background:var(--ink);color:#fff;border-color:var(--ink)}.unit-list button[aria-pressed="true"]>span:first-child{color:#d4b674}.unit-list button:hover:not([aria-pressed="true"]){background:#ede9df}.unit-detail{padding:34px;border:1px solid var(--line);background:var(--white)}.unit-detail h2{font-size:30px;letter-spacing:-1px;margin:0 0 13px}.unit-description{color:var(--muted);font-size:1.0625rem}.skill-tags{display:flex;flex-wrap:wrap;gap:7px;margin:21px 0 29px}.skill-tags span{border:1px solid var(--line);padding:4px 9px;font-size:0.875rem;background:var(--paper)}.lesson-card{padding:23px;background:#f0eee7;border-left:3px solid var(--gold)}.lesson-card .eyebrow{margin-bottom:10px}.lesson-card h3{margin:0 0 12px;font-size:19px}.lesson-card p:last-child{margin-bottom:0}.lesson-card>p:not(.eyebrow){color:#536570;font-size:1rem}.math-line{font-family:Georgia,"Times New Roman",serif;font-size:25px;line-height:1.5;color:var(--ink);margin:15px 0}.unit-actions{display:flex;flex-wrap:wrap;align-items:center;gap:22px;margin-top:26px}.button{display:inline-flex;align-items:center;justify-content:center;gap:25px;background:var(--orange);border:1px solid var(--orange);color:#fff;padding:13px 18px;font-size:0.875rem;font-weight:700;border-radius:0;line-height:1.5}.button:hover{background:#a9512d;color:#fff;border-color:#a9512d}.button.secondary{background:transparent;color:var(--ink);border-color:#a7aaa8}.button.secondary:hover{background:var(--soft)}.text-action{font-size:0.875rem;font-weight:700;text-decoration:underline;text-underline-offset:5px;text-decoration-color:var(--gold)}.unit-connection{margin:23px 0 0;padding-top:19px;border-top:1px solid var(--line);color:var(--muted);font-size:0.875rem}.section-intro{display:flex;align-items:flex-start;justify-content:space-between;gap:30px;margin-bottom:25px}.section-intro h2{font-size:30px;letter-spacing:-1px;margin:0 0 10px}.section-intro p{max-width:760px;color:var(--muted);font-size:1rem;margin:0}.sample-counter{white-space:nowrap;font-size:0.875rem;background:#eae6dc;padding:7px 11px}.practice-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:30px;align-items:start}.sample-card{padding:32px;border:1px solid var(--line);background:var(--white);min-width:0}.sample-card .eyebrow{margin-bottom:7px}.sample-card h3{font-size:18px;margin:0 0 17px}.question-prompt{font-size:1.1875rem;line-height:1.8;color:var(--ink)}.question-prompt .math-line{display:block;font-size:29px}.answer-options{padding:0;margin:23px 0;border:0;display:grid;gap:10px}.answer-options legend{font-size:0.875rem;color:var(--muted);margin-bottom:10px}.answer-option{display:flex;align-items:center;gap:13px;border:1px solid var(--line);padding:12px 14px;font-size:1.0625rem;cursor:pointer;line-height:1.5}.answer-option:hover{background:#f2efe8}.answer-option:has(input:checked){border-color:var(--ink);background:#eaeef0}.answer-option input{margin:0;accent-color:var(--ink);width:16px;height:16px;flex-shrink:0}.answer-option.correct-choice{border-color:var(--feedback);background:#edf3ee}.choice-mark{margin-left:auto;font-size:0.875rem;color:var(--feedback);font-weight:700}.question-controls{display:flex;align-items:center;gap:15px;flex-wrap:wrap}.question-controls .button:disabled{opacity:.55}.inline-error{font-size:0.875rem;color:#9d4328;width:100%;margin:0}.feedback{margin-top:25px;border-top:1px solid var(--line);padding-top:22px}.feedback>h4{font-size:18px;margin:0 0 9px;color:var(--feedback)}.feedback.incorrect>h4{color:#a54c2a}.feedback>p{font-size:1rem;color:var(--muted)}.feedback h5{font-size:0.875rem;margin:22px 0 7px}.feedback ol{padding-left:20px;margin:0;font-size:1rem;line-height:1.8;color:#53616b}.common-mistake{padding:12px 15px;background:#f3ede2;font-size:0.875rem}.next-review{padding:15px;border:1px solid var(--line);background:var(--paper)}.next-review p{font-size:0.875rem;color:var(--muted);margin:0 0 8px}.review-sidebar{padding:24px;background:#ece9e1;border-top:3px solid var(--gold)}.review-sidebar h3{font-size:18px;margin:0 0 12px}.review-sidebar p{font-size:0.875rem;color:#5b6a74}.review-sidebar label{display:block;font-size:0.875rem;font-weight:700;margin-bottom:8px}.review-sidebar select{width:100%;padding:10px 8px;border:1px solid #c5c2b9;background:var(--paper);color:var(--ink);font-size:0.875rem;min-height:44px}.review-sidebar .text-action{display:inline-block;margin-top:16px}.sample-nav{display:flex;gap:10px;flex-wrap:wrap;margin-top:21px}.sample-nav button{font-size:0.875rem}.assessment-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.assessment-card{padding:29px;border:1px solid var(--line);background:var(--white);display:flex;flex-direction:column;align-items:flex-start}.assessment-card .number{font-family:Georgia,serif;color:#ac8a45;font-size:27px}.assessment-card h3{font-size:23px;margin:12px 0}.assessment-card p{font-size:1rem;color:var(--muted)}.assessment-card .text-action{margin-top:auto;padding-top:15px}.assessment-process{padding:24px 29px;margin-top:22px;background:var(--ink);color:#fff;display:flex;align-items:center;gap:40px}.assessment-process h3{font-size:18px;margin:0;flex-shrink:0}.assessment-process p{color:#d5dce1;font-size:0.875rem;margin:0}.course-fit{display:flex;justify-content:space-between;align-items:center;gap:60px;padding:44px 0 55px;border-top:1px solid var(--line)}.course-fit h2{font-size:32px;letter-spacing:-1px;margin:0 0 17px}.course-fit p:not(.eyebrow){max-width:680px;font-size:1rem;color:var(--muted);margin-bottom:0}.course-fit .button{flex-shrink:0}.course-footer{background:#eeebe4;border-top:3px solid var(--orange);padding:32px 0}.course-footer a{font-size:1.0625rem;font-weight:700}.course-footer a span{padding:0 13px;color:#a29477}.course-footer p{color:#627079;font-size:0.875rem;max-width:850px;margin:15px 0 0}.course-footer .footer-note{font-size:0.875rem;margin-top:7px}
@media(max-width:1000px){.course-hero-grid{gap:35px;grid-template-columns:1fr 270px}.unit-layout{grid-template-columns:240px 1fr;gap:22px}.unit-detail{padding:26px}.practice-layout{grid-template-columns:minmax(0,1fr) 240px;gap:20px}.course-fit{gap:30px}.course-fit h2{font-size:29px}}
@media(max-width:760px){.course-container{width:calc(100% - 40px)}.course-header{height:100px;padding-inline:20px;gap:18px}.course-header img{width:auto;height:80px;object-fit:contain}.course-header nav{gap:15px;font-size:0.875rem}.course-header nav>a:first-child{display:none}.course-hero{padding-top:20px}.breadcrumb{margin-bottom:30px}.course-hero-grid{grid-template-columns:1fr;gap:27px}.course-switch{max-width:340px}.course-switch>p{margin-bottom:7px}.hero-description{font-size:1.125rem;max-width:530px}h1{font-size:54px}.course-path{gap:13px;margin-top:26px}.explorer{padding-top:28px}.explorer-tabs{gap:24px;margin-bottom:24px}.explorer-tabs button{font-size:0.875rem}.unit-layout{grid-template-columns:1fr}.unit-list{display:grid;grid-template-columns:1fr 1fr;border-bottom:1px solid var(--line)}.unit-list button{border-bottom:0!important;font-size:0.875rem;gap:8px;padding:11px 10px}.unit-sidebar>p{margin-bottom:13px}.unit-detail h2{font-size:26px}.practice-layout{grid-template-columns:1fr}.review-sidebar{order:-1;padding:19px}.review-sidebar h3{font-size:1.125rem}.review-sidebar p{margin-bottom:13px}.review-sidebar .text-action{margin-top:12px}.section-intro h2{font-size:27px}.sample-card{padding:23px}.assessment-grid{gap:14px}.assessment-card{padding:22px}.assessment-card h3{font-size:21px}.assessment-process{flex-direction:column;align-items:flex-start;gap:12px}.course-fit{align-items:flex-start;flex-direction:column;gap:25px;padding-top:34px}.course-fit h2{font-size:29px}.course-fit h2 br{display:none}}
@media(max-width:420px){.course-header img{width:auto}.course-header nav{font-size:0.875rem}.support-link span{margin-left:5px}.course-container{width:calc(100% - 32px)}.course-hero .eyebrow{font-size:0.875rem}.course-path{font-size:0.875rem;gap:11px}.section-intro{flex-direction:column;gap:12px}.sample-card,.unit-detail{padding:20px}.assessment-grid{grid-template-columns:1fr}.unit-list button{font-size:0.875rem}.unit-detail h2{font-size:24px}.sample-card h3{font-size:1.125rem}.question-prompt{font-size:1.125rem}.question-prompt .math-line{font-size:25px}.course-footer a{font-size:0.875rem}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}