.tutorial-library{scroll-margin-top:90px;min-width:0}
.tutorial-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:18px}
.tutorial-heading h2{margin:0}
.tutorial-workspace{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(270px,1fr);gap:22px;align-items:start}
.tutorial-main h3{font-size:22px;margin:0 0 8px}
.tutorial-main{scroll-margin-top:90px}
.tutorial-main>p{margin:0 0 16px}
.tutorial-screen{overflow:hidden;border-radius:14px;background:#10243e;display:flex;justify-content:center}
.tutorial-screen video{display:block;width:100%;height:min(640px,72vh);max-width:100%;object-fit:contain;background:#10243e}
.tutorial-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 0;font-size:13px;color:var(--muted)}
.tutorial-meta a{color:var(--blue);font-weight:700}
.tutorial-lessons{display:grid;gap:10px}
.tutorial-lesson{display:grid;grid-template-columns:56px minmax(0,1fr);gap:14px;padding:14px;border:1px solid #dce4eb;border-radius:14px;background:var(--white);color:var(--ink)}
.tutorial-lesson[aria-current=true]{border-color:var(--blue);box-shadow:inset 4px 0 0 var(--blue)}
.tutorial-lesson img{width:56px;height:80px;object-fit:cover;border-radius:8px;background:#10243e}
.tutorial-lesson strong,.tutorial-lesson small{display:block;overflow-wrap:anywhere}
.tutorial-lesson small{font-size:12px;color:var(--muted);margin:5px 0}
.tutorial-length{font-size:12px;font-variant-numeric:tabular-nums;color:var(--blue);font-weight:750}
.tutorial-chapters{border-top:1px solid #dce4eb;padding-top:12px}
.tutorial-chapters summary{cursor:pointer;font-weight:700;min-height:36px}
.tutorial-chapters ol{list-style:none;margin:0;padding:0;max-height:310px;overflow-y:auto;overscroll-behavior:contain}
.tutorial-chapters button{display:flex;align-items:center;gap:14px;text-align:left;width:100%;min-height:44px;border:0;border-radius:8px;background:transparent;color:var(--ink);font:inherit;font-size:13px;padding:10px;cursor:pointer}
.tutorial-chapters button>span{flex:0 0 40px;color:var(--muted);font-variant-numeric:tabular-nums}
.tutorial-chapters button:hover,.tutorial-chapters button[aria-current=true]{background:#e8f5f4;color:#10243e}
.tutorial-library a:focus-visible,.tutorial-library button:focus-visible,.tutorial-library summary:focus-visible{outline:3px solid var(--gold);outline-offset:2px}
.tutorial-playback-error{padding:12px;border-radius:10px;background:#fff0de;color:#10243e;font-size:13px}
.tutorial-playback-error[hidden]{display:none}
.tutorial-playback-error button{border:0;background:transparent;color:#176b87;text-decoration:underline;font:inherit;cursor:pointer}
html[data-theme=dark] .tutorial-lesson{background:#182d43;border-color:#354a62;color:#edf4fb}
html[data-theme=dark] .tutorial-lesson[aria-current=true]{border-color:#77cade;box-shadow:inset 4px 0 0 #77cade}
html[data-theme=dark] .tutorial-lesson small,html[data-theme=dark] .tutorial-meta,html[data-theme=dark] .tutorial-chapters button>span{color:#b3c4d4}
html[data-theme=dark] .tutorial-length,html[data-theme=dark] .tutorial-meta a{color:#77cade}
html[data-theme=dark] .tutorial-chapters button{color:#edf4fb}
html[data-theme=dark] .tutorial-chapters button:hover,html[data-theme=dark] .tutorial-chapters button[aria-current=true]{background:#233d56;color:#edf4fb}
@media(max-width:760px){.tutorial-workspace{grid-template-columns:minmax(0,1fr);gap:16px}.tutorial-screen video{height:min(620px,72vh)}.tutorial-main{padding:16px}.tutorial-lessons{grid-template-columns:repeat(2,minmax(0,1fr))}.tutorial-lesson{grid-template-columns:minmax(0,1fr);gap:8px;padding:12px}.tutorial-lesson img{display:none}.tutorial-lesson strong{font-size:14px}.tutorial-lesson small{font-size:12px}.tutorial-heading h2{font-size:22px}}
@media(prefers-reduced-motion:reduce){.tutorial-library{scroll-behavior:auto}}