:root{--ink:#17333f;--muted:#46616e;--line:#cedadf;--teal:#086c6e;--pale:#eef5f4;--gold:#dfad58}*{box-sizing:border-box}body{margin:0;background:#f4f6f5;color:var(--ink);font:18px/1.6 system-ui,-apple-system,Segoe UI,sans-serif}header{background:#142f3a;color:white;display:flex;justify-content:space-between;gap:20px;align-items:center;padding:24px 4vw}.brand{font-size:13px;letter-spacing:.13em;font-weight:750}.brand span{display:block;font-size:16px;letter-spacing:0;font-weight:400;margin-top:5px;color:#d0e1e5}.pill{font-size:13px;color:#fff;border:1px solid #66808a;border-radius:30px;padding:7px 12px;white-space:nowrap}#runtime{background:#e4ecee;padding:9px 4vw;font-size:14px;color:#23434e}#runtime.error{background:#fff0d9;color:#603608}.layout{max-width:1360px;display:grid;grid-template-columns:300px minmax(0,1fr);margin:0 auto;gap:44px;padding:36px 4vw 52px}aside h1{font-size:30px;line-height:1.15;margin:8px 0 20px;letter-spacing:-.02em}.eyebrow{font-size:10px;font-weight:800;letter-spacing:.14em;color:#285b65}#progress{font-size:14px;margin:0 0 5px}progress{width:100%;height:8px;accent-color:var(--teal);margin-bottom:20px}nav button{font:inherit;font-size:14px;width:100%;border:0;border-bottom:1px solid var(--line);border-radius:0;background:transparent;text-align:left;display:flex;gap:10px;align-items:flex-start;padding:9px 6px;color:var(--muted);line-height:1.35;min-height:42px}nav button span{font-size:11px;min-width:28px;padding-top:2px}nav button[aria-current=step]{background:#dae9e8;color:#113d42;font-weight:750;border-radius:5px}.resources{border-top:1px solid var(--line);margin-top:20px;padding:18px 0;font-size:14px}.resources a,a{color:#086369;text-underline-offset:3px}main{min-width:0;background:white;border:1px solid #d8e2e4;border-radius:10px;padding:40px clamp(22px,4vw,58px);align-self:start;box-shadow:0 6px 22px #16333c05}main:focus{outline:none}main h2{font-size:clamp(28px,3vw,40px);line-height:1.13;font-weight:750;letter-spacing:-.03em;margin:14px 0 30px}main h3{font-size:21px;line-height:1.3;margin:26px 0 12px}main p{margin:0 0 21px}.step{font-size:12px;font-weight:750;color:#34717a;letter-spacing:.12em;text-transform:uppercase}.question{margin:30px 0;padding:22px;background:var(--pale);border:1px solid #c6dcd9;border-radius:8px}fieldset{border:0;margin:0;padding:0;min-width:0}legend{font-weight:700;font-size:18px;margin-bottom:16px;line-height:1.45;width:100%}label.option{display:flex;gap:12px;align-items:flex-start;background:white;border:1px solid #bdd1d4;border-radius:6px;padding:13px 15px;margin-bottom:10px;cursor:pointer;font-size:16px;line-height:1.5}input[type=radio]{flex:none;width:19px;height:19px;accent-color:var(--teal);margin-top:3px}button{font:inherit;font-size:16px;font-weight:650;background:var(--teal);color:white;border:1px solid var(--teal);border-radius:6px;padding:11px 18px;cursor:pointer;line-height:1.45}button:hover{filter:brightness(.93)}button:disabled{cursor:not-allowed;background:#edf0f0;color:#637579;border-color:#cdd6d8;filter:none}button.secondary{background:transparent;border-color:#819ca4;color:#2f535e}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #aa5600;outline-offset:3px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px;border-top:1px solid #dce4e6;padding-top:24px}.actions button:last-child{margin-left:auto}.feedback{font-size:16px;margin-top:16px;padding:14px;background:#fff4df;border-left:4px solid #bc7720}.feedback.good{background:#dfefeb;border-color:#287966}.feedback p{margin:0}.notice{background:#edf3f5;border-left:4px solid #658c9b;padding:18px;margin:25px 0}.notice p:last-child{margin-bottom:0}.score{font-size:52px;font-weight:800;line-height:1.1;margin:25px 0 12px}.review{border-top:1px solid var(--line);padding-top:16px;margin-top:20px}.review p{font-size:16px;margin-bottom:10px}footer{border-top:1px solid var(--line);font-size:13px;color:var(--muted);padding:24px 4vw;text-align:center}.skip{position:absolute;left:20px;top:-80px;background:white;z-index:3;padding:10px}.skip:focus{top:12px}.small{font-size:14px;color:var(--muted)}.empty{color:#675421}#exit{font-size:14px}ul{padding-left:23px}@media(max-width:820px){header{align-items:flex-start;flex-direction:column;padding:20px 22px}.layout{grid-template-columns:1fr;padding:25px 18px;gap:24px}aside h1{font-size:25px;margin-bottom:12px}nav{display:grid;grid-template-columns:1fr 1fr;gap:3px}nav button{font-size:12px;padding:8px;min-height:50px}.resources{margin-top:12px;padding:12px 0}main{padding:28px 22px}main h2{font-size:30px}.question{padding:15px}.actions button{flex:1}.actions button:last-child{margin-left:0}body{font-size:17px}}@media print{header,aside,#runtime,footer,.actions,button{display:none}.layout{display:block;padding:0}main{border:0;box-shadow:none;padding:0}}

:root{--ink:#14364e;--muted:#48616f;--teal:#075681;--pale:#edf4fa}header{background:#082d43;flex-wrap:wrap}.brand{font-size:14px;letter-spacing:.03em}.brand a{color:#fff;text-decoration:none}.brand span{color:#d5e4ec}.pill{font-size:14px;border-color:#829aab}header .return{color:#f6c700;font-weight:700;font-size:16px}.eyebrow{font-size:13px}.step{font-size:14px;letter-spacing:.06em}nav button span{font-size:13px}nav button[aria-current=step]{background:#e2eef7;color:#14364e}a{color:#075681}details summary{font-size:16px;cursor:pointer;font-weight:700;padding:10px 0}.resources{font-size:16px}.small{font-size:14px}footer{font-size:14px}.preview-note{font-size:14px;background:#fff6cf;padding:10px 4vw;margin:0}#exit{font-size:16px}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #b45b00;outline-offset:4px}.return-course{display:inline-block;margin-top:16px;font-size:16px}main{scroll-margin-top:20px}@media(max-width:820px){nav button{font-size:14px}header{gap:12px}.layout{gap:18px;padding-top:20px}.brand span{font-size:15px}main h2{font-size:28px}.pill{white-space:normal}}@media(min-width:900px){details>summary{font-size:14px}}@media print{.preview-note,.return-course{display:none}}

/* Keyboard focus must remain visible on light and dark surfaces. */
:is(a,button,input,summary,main,[tabindex]):focus-visible{outline:3px solid #14364e;outline-offset:3px;box-shadow:0 0 0 3px #fff}
#main{overflow-wrap:anywhere}
@media(max-width:380px){.layout{padding-inline:10px}main{padding:22px 14px}.question{padding:12px}label.option{padding:12px;gap:9px}.actions{flex-direction:column}.actions button{width:100%}nav{grid-template-columns:1fr}}
@media(forced-colors:active){:is(a,button,input,summary,main,[tabindex]):focus-visible{outline-color:Highlight;box-shadow:none}progress{forced-color-adjust:auto}}

[data-lesson-voice-controls]{display:flex;align-items:center;gap:.65rem;flex-wrap:wrap;margin:1rem 0}
[data-lesson-voice-controls] button{min-height:44px;padding:.6rem .9rem;border:1px solid var(--teal,#28648f);border-radius:6px;background:var(--teal,#28648f);color:#fff;font:inherit;font-weight:650;cursor:pointer}
[data-lesson-voice-controls] button[data-lesson-voice-stop]{background:transparent;color:var(--teal,#28648f)}
[data-lesson-voice-controls] button:disabled{opacity:.6;cursor:default}
[data-lesson-voice-controls] button:focus-visible{outline:3px solid #bb8f42;outline-offset:3px}
[data-lesson-voice-controls] button{display:inline-flex;align-items:center;justify-content:center;min-width:44px}
[data-lesson-voice-controls] svg{display:block;flex:none}
[data-lesson-voice-controls] span,[data-lesson-voice-status]{font-size:.9rem;color:#455b68;line-height:1.5}
[data-lesson-voice-status]{margin:.5rem 0 1rem}
@media(max-width:550px){[data-lesson-voice-controls] span{flex-basis:100%}}