.tutorial-intro{padding:45px 0 30px;max-width:850px}.tutorial-intro h1{margin:15px 0 22px}.tutorial-intro .lead{max-width:720px}.tutorial-meta{font-size:13px;color:#62685c}.tutorial-layout{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:26px;align-items:start;margin-bottom:28px}.tutorial-player{min-width:0}.tutorial-player video{display:block;width:100%;height:auto;aspect-ratio:16/9;background:#171c18;border:1px solid #171c18}.player-tools{display:flex;justify-content:space-between;align-items:center;gap:16px;border-bottom:1px solid #d2d6ca;padding:12px 0}.player-tools p{margin:0;font-size:13px;font-weight:600}.player-tools button{border:1px solid #171c18;background:#171c18;color:#f5f4ed;font:inherit;font-size:12px;padding:9px 12px;cursor:pointer;white-space:nowrap}.player-tools button[aria-pressed=false]{background:transparent;color:#171c18}.chapter-panel{border:1px solid #d2d6ca;background:#fff}.chapter-heading{padding:18px 20px;border-bottom:1px solid #d2d6ca}.chapter-heading h2{font-size:27px;margin:0 0 9px}.chapter-heading p{font-size:12px;color:#62685c;margin:0}.chapter-list{list-style:none;margin:0;padding:0}.chapter-list a{display:grid;grid-template-columns:44px 1fr;gap:12px;padding:11px 16px;text-decoration:none;font-size:12px;line-height:1.45;border-bottom:1px solid #e7e9e0}.chapter-list li:last-child a{border-bottom:0}.chapter-list a:hover{background:#f5f4ed}.chapter-list a[aria-current=true]{background:#d7ff3f;font-weight:600}.chapter-time{font-variant-numeric:tabular-nums;color:#62685c}.chapter-list a[aria-current=true] .chapter-time{color:#171c18}.tutorial-context{border-top:1px solid #d2d6ca;padding:22px 0 32px;font-size:13px;max-width:850px}.tutorial-context p{margin:0 0 12px}.tutorial-context strong{font-weight:600}.chapter-list a:focus-visible,.player-tools button:focus-visible{outline:3px solid #171c18;outline-offset:2px}@media(max-width:950px){.tutorial-layout{grid-template-columns:minmax(0,1fr) 270px;gap:18px}.chapter-list a{padding:10px 12px;font-size:11px;gap:8px}}@media(max-width:700px){.tutorial-intro{padding:30px 0 20px}.tutorial-intro h1{font-size:43px}.tutorial-layout{grid-template-columns:1fr;gap:22px}.chapter-list a{font-size:13px;padding:13px 16px}.player-tools{gap:10px}.player-tools p{font-size:12px}.chapter-heading h2{font-size:25px}.tutorial-meta{font-size:12px}}
@media(max-width:700px){.tutorial-page header{flex-wrap:wrap;gap:14px}.tutorial-page header nav{flex-wrap:wrap;gap:14px}}