:root{color-scheme:light;--ink:#193541;--muted:#596e77;--paper:#faf9f5;--line:#dce4e2;--teal:#086859;--soft:#edf5f0;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--paper)}
*{box-sizing:border-box}body{margin:0}a{color:var(--teal);text-underline-offset:3px}button,a{-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible{outline:3px solid #e3a746;outline-offset:4px;border-radius:4px}.masthead{max-width:1160px;margin:auto;padding:25px 30px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);gap:18px}.masthead a{color:var(--ink);font-size:1.35rem;font-weight:850;letter-spacing:.08em;text-decoration:none}.masthead a span{display:block;font-size:.72rem;font-weight:500;letter-spacing:.02em;margin-top:2px}.edition{font-size:.82rem;color:var(--muted)}main{max-width:1160px;margin:auto;padding:0 30px}.intro{max-width:790px;padding:64px 0 34px}.eyebrow{text-transform:uppercase;letter-spacing:.13em;font-size:.7rem;font-weight:750;color:var(--teal);margin:0 0 12px}h1{font-size:clamp(2.25rem,5vw,3.6rem);font-weight:650;letter-spacing:-.055em;line-height:1.05;margin:0 0 20px}.lead{font-size:1.16rem;line-height:1.6;max-width:670px;margin:0 0 17px}.run-note{font-size:.85rem;line-height:1.6;color:var(--muted);max-width:660px;margin:0}.topic-nav{display:flex;flex-wrap:wrap;gap:8px;padding-bottom:35px}.topic-nav a{border:1px solid var(--line);border-radius:20px;padding:8px 12px;font-size:.76rem;text-decoration:none;color:var(--muted)}.topic-nav a:hover{background:var(--soft);border-color:#9fbfb4;color:var(--teal)}.topic{display:grid;grid-template-columns:1fr 2.2fr;gap:40px;padding:34px 0 40px;border-top:1px solid var(--line);scroll-margin-top:20px}.topic-heading .eyebrow{margin-top:5px}h2{font-size:1.3rem;font-weight:630;letter-spacing:-.025em;line-height:1.3;margin:0}h3{font-size:1rem;line-height:1.4;font-weight:620;margin:0}.quiz-card{display:flex;justify-content:space-between;gap:20px;align-items:center;padding:21px 23px;border-radius:10px;background:var(--soft);border:1px solid #d9e7de}.quiz-card p,.interactions p{font-size:.86rem;line-height:1.55;color:var(--muted);margin:7px 0 0}.quiz-link{display:inline-flex;gap:15px;align-items:center;white-space:nowrap;text-decoration:none;font-size:.88rem;font-weight:650}.quiz-link:hover{text-decoration:underline}.interactions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:12px}.interactions form,.external-activity{display:flex;flex-direction:column;justify-content:space-between;border:1px solid var(--line);border-radius:10px;background:white;padding:22px;gap:24px}.kind{display:block;text-transform:uppercase;font-size:.64rem;letter-spacing:.1em;color:var(--muted);margin-bottom:7px}button,.activity-link{font:inherit;font-size:.85rem;font-weight:600;display:flex;justify-content:space-between;align-items:center;color:var(--teal);border:0;border-top:1px solid var(--line);background:none;cursor:pointer;padding:15px 0 0;text-align:left;gap:14px}button:hover,.activity-link:hover{color:var(--ink)}button span[aria-hidden],.activity-link span[aria-hidden]{font-size:1.1rem}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}footer{max-width:1100px;margin:0 auto;padding:24px 0 35px;font-size:.78rem;color:var(--muted);border-top:1px solid var(--line)}main.expired{max-width:780px;margin:10vh auto}.expired p:not(.eyebrow){line-height:1.6;margin-bottom:28px}
@media(max-width:760px){.masthead{padding:20px}.edition{font-size:.72rem}main{padding:0 20px}.intro{padding-top:38px}.topic{grid-template-columns:1fr;gap:20px;padding:26px 0}.quiz-card{padding:18px}.interactions form,.external-activity{padding:18px}.topic-nav{padding-bottom:24px;gap:6px}footer{margin:0 20px}.topic-heading h2{max-width:500px}}@media(max-width:420px){.interactions{grid-template-columns:1fr}.quiz-card{align-items:flex-start;flex-direction:column;gap:15px}.topic-nav a{font-size:.71rem}}

.activity-link{text-decoration:none}