:root{--paper:#fffdf5;--ink:#284e42;--forest:#315d48;--line:#d7dfd1;--mint:#edf3e5}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.65 'Trebuchet MS',Arial,sans-serif}a{color:var(--forest);text-underline-offset:4px}a:focus-visible{outline:3px solid #b95b39;outline-offset:5px}.shell{width:min(1000px,calc(100% - 40px));margin:auto}header{border-bottom:1px solid var(--line);background:var(--mint)}nav{display:flex;gap:24px;justify-content:space-between;align-items:center;padding:20px 0}nav div{display:flex;gap:20px;flex-wrap:wrap}nav a{font-size:14px}.brand{font:bold 25px Georgia,serif;text-decoration:none}main{padding:30px 0 60px}h1,h2,h3{font-family:Georgia,serif;line-height:1.15}h1{font-size:clamp(32px,5vw,52px);letter-spacing:-.03em;max-width:900px}h2{font-size:28px;margin-top:36px}h3{font-size:21px}.intro{font-size:19px;max-width:820px}.breadcrumb,.player-note{font-size:14px}.player{aspect-ratio:16/9;margin-top:26px;background:#e5eddf;border-radius:16px;overflow:hidden}.player iframe{display:block;border:0;width:100%;height:100%}section{max-width:900px}.activity{padding:4px 24px 14px;background:var(--mint);border:1px solid var(--line);border-radius:18px;margin-top:32px}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px}.card{display:block;overflow:hidden;border:1px solid var(--line);border-radius:16px;text-decoration:none;background:white}.card img{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:cover}.card h3,.card p{margin:18px}.card p{font-size:15px}.actions{display:flex;gap:20px;align-items:center;flex-wrap:wrap}.button{display:inline-block;padding:12px 20px;border-radius:30px;background:var(--forest);color:white;text-decoration:none;font-weight:bold}.skip{position:absolute;top:-80px}.skip:focus{top:5px;background:white;padding:10px;z-index:10}footer{border-top:1px solid var(--line);padding:20px 0;font-size:14px}@media(max-width:600px){nav{align-items:flex-start;flex-direction:column;gap:14px}nav div{gap:12px}main{padding-top:20px}.intro{font-size:17px}.cards{grid-template-columns:1fr}.activity{padding:4px 18px 14px}}