.tutorial-page [hidden]{display:none!important}.tutorial-heading{padding-bottom:34px}.tutorial-heading .tutorial-eyebrow{color:#79cfff;font:12px Bahnschrift,Arial,sans-serif;letter-spacing:2.5px;margin-bottom:12px}.tutorial-layout{display:grid;grid-template-columns:288px minmax(0,1fr);gap:24px;align-items:start}.tutorial-directory{padding:24px 18px;position:sticky;top:20px}.tutorial-directory-title{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:0 5px}.tutorial-directory-title h2{font-size:19px;margin:0}.tutorial-directory-title>span{color:#8da9c8;font-size:12px}.tutorial-search{display:flex;align-items:center;gap:10px;border:1px solid #355375;border-radius:8px;background:#030e1ee8;padding:10px 12px;margin:22px 0}.tutorial-search:focus-within{border-color:#68c8ff;box-shadow:0 0 0 2px #3886d329}.tutorial-search svg{width:18px;height:18px;stroke:#a7bfd8;stroke-width:1.7;fill:none;flex-shrink:0}.tutorial-search input{min-width:0;width:100%;border:0;outline:none;background:transparent;color:#edf5ff;font:inherit;font-size:13px}.tutorial-search input::placeholder{color:#8196b1}.tutorial-muted{color:#9eb3cb;font-size:13px}.tutorial-category-group{margin:0 0 22px}.tutorial-category-group h3{color:#99b6d4;font-size:12px;font-weight:500;letter-spacing:1px;margin:0 10px 8px}.tutorial-course-button{display:flex;align-items:center;gap:10px;width:100%;text-align:left;border:1px solid transparent;border-radius:8px;background:transparent;color:#d7e5f6;padding:11px 10px;font:inherit;font-size:14px;cursor:pointer;line-height:1.6;margin:3px 0}.tutorial-course-name{flex:1;min-width:0;overflow-wrap:anywhere}.tutorial-course-number{font:11px Bahnschrift,Arial,sans-serif;color:#7e9bb9}.tutorial-course-button:hover{background:#1e3a5b80}.tutorial-course-button[aria-current=true]{color:#fff;background:linear-gradient(100deg,#1063b5b8,#0f3b69a8);border-color:#3278b9;box-shadow:inset 3px 0 #63c8ff}.tutorial-course-button[aria-current=true] .tutorial-course-number{color:#9fdcff}.tutorial-detail{padding:30px;min-height:600px;overflow:hidden}.tutorial-detail:focus{outline:2px solid #529cd4;outline-offset:4px}.tutorial-eyebrow{font-size:12px;letter-spacing:1px;color:#8ecfff;margin:0 0 10px}.tutorial-detail h2{font-size:26px;line-height:1.45;margin:0 0 24px;overflow-wrap:anywhere}.tutorial-cover{position:relative;aspect-ratio:16/9;border:1px solid #314b69;border-radius:10px;overflow:hidden;background:#071424}.tutorial-cover img{width:100%;height:100%;object-fit:contain;display:block}.tutorial-cover-placeholder{height:100%;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:8px;background:radial-gradient(ellipse at 55% 20%,#195b8269,transparent 65%),linear-gradient(135deg,#091a30,#0d253e)}.tutorial-cover-placeholder>span{font-size:54px;line-height:1.2;color:#65beed}.tutorial-cover-placeholder p{color:#deefff;font-size:18px;margin:0}.tutorial-cover-placeholder small{color:#99b6d4}.tutorial-cover-tag{position:absolute;left:16px;top:16px;padding:4px 10px;border:1px solid #6082a5;border-radius:5px;color:#d6e9ff;background:#041225dc;font-size:11px}.tutorial-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:24px}.tutorial-actions .cosmic-button{padding:11px 26px;gap:12px}.tutorial-watch-note{margin:12px 0 0;font-size:12px;color:#91a8c0}.tutorial-introduction{border-top:1px solid #29415c;margin-top:26px;padding-top:23px}.tutorial-introduction h3{font-size:16px;margin:0 0 12px}.tutorial-introduction p{white-space:pre-wrap;overflow-wrap:anywhere;color:#afc1d6;font-size:14px;line-height:1.9;margin:0}.tutorial-empty{display:flex;min-height:530px;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:28px}.tutorial-empty h2{font-size:24px;margin:15px 0}.tutorial-empty p{color:#9fb5ce;margin:0 0 24px;max-width:360px}.tutorial-book{font-size:64px;color:#6da4ce}.tutorial-qr-dialog{background:#0b1b30;color:#edf5ff;border:1px solid #45658a;border-radius:14px;padding:32px;width:min(410px,calc(100% - 32px));max-height:calc(100dvh - 32px);overflow:auto;text-align:center;box-shadow:0 24px 100px #0007;box-sizing:border-box}.tutorial-qr-dialog::backdrop{background:#010812c9;backdrop-filter:blur(5px)}.tutorial-qr-dialog h2{font-size:22px;margin:0 0 22px}.tutorial-qr-dialog #qr-close{position:absolute;right:10px;top:8px;width:36px;height:36px;background:transparent;border:0;color:#c9dcf1;cursor:pointer;font-size:25px}.tutorial-qr-dialog svg{width:100%;height:auto;display:block;background:#fff}.tutorial-qr-dialog #course-qr-image{max-width:300px;margin:0 auto 16px}.tutorial-qr-dialog #course-qr-caption{font-size:14px;overflow-wrap:anywhere}.tutorial-qr-dialog a{color:#8fd6ff;font-size:13px}.tutorial-visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}.tutorial-page button:focus-visible,.tutorial-page a:focus-visible{outline:2px solid #8bd8ff;outline-offset:3px}#course-directory{max-height:64vh;overflow:auto;scrollbar-width:thin;scrollbar-color:#355375 transparent}.tutorial-page .cosmic-learning-note{margin-top:24px}
@media(max-width:1050px){.tutorial-layout{grid-template-columns:248px minmax(0,1fr);gap:18px}.tutorial-detail{padding:24px}.tutorial-detail h2{font-size:23px}.tutorial-actions .cosmic-button{padding:11px 18px}.tutorial-directory{padding:22px 14px}}
@media(max-width:760px){.tutorial-layout{grid-template-columns:minmax(0,1fr);gap:18px}.tutorial-heading{padding-top:28px;padding-bottom:24px}.tutorial-directory{position:static;padding:18px}.tutorial-directory-title h2{font-size:18px}.tutorial-search{margin:16px 0}.tutorial-category-group{margin-bottom:16px}#course-directory{max-height:240px}.tutorial-detail{padding:20px;min-height:0}.tutorial-detail h2{font-size:22px}.tutorial-empty{min-height:300px;padding:12px}.tutorial-actions{gap:10px}.tutorial-actions .cosmic-button{width:100%;justify-content:center}.tutorial-cover-placeholder>span{font-size:36px}.tutorial-cover-placeholder p{font-size:14px}.tutorial-cover-placeholder small{font-size:11px}.tutorial-cover-tag{top:8px;left:8px;font-size:10px}.tutorial-qr-dialog{padding:30px 22px}.tutorial-introduction{margin-top:20px;padding-top:20px}}