#tut-app{display:grid;grid-template-columns:minmax(340px,420px) 1fr;grid-template-rows:var(--top-h) 1fr;grid-template-areas:"top top" "coach main";height:100%}#tut-app.picking{grid-template-columns:0 1fr}#tut-app.picking #coach{display:none}#tut-app #viewport{grid-area:main}#tut-top{grid-area:top;display:flex;align-items:center;gap:18px;padding:0 14px;background:var(--panel);border-bottom:1px solid var(--line);min-width:0}#tut-top .brand{text-decoration:none;color:inherit}.tut-lesson{flex:1;display:flex;align-items:center;gap:14px;min-width:0}.tl-title{font-family:var(--font-ui);font-weight:800;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}.tl-title span{color:var(--accent-2);margin-right:8px}.tl-bar{flex:1;max-width:340px;min-width:80px;height:6px;border-radius:4px;background:var(--panel-3);overflow:hidden}.tl-bar i{display:block;height:100%;background:var(--accent);transition:width .45s ease}.tl-count{color:var(--muted);font-variant-numeric:tabular-nums;font-size:12px;white-space:nowrap}.tut-actions{display:flex;gap:6px;align-items:center;margin-left:auto}.pill{display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 12px;border-radius:16px;background:var(--panel-2);border:1px solid var(--line);color:var(--muted);font-size:12px;font-family:var(--font-ui);font-weight:700;white-space:nowrap}.pill i{width:9px;height:9px;border-radius:50%;background:#4a525b}.pill.on{color:#fff;border-color:#38c77f73;background:#38c77f1f}.pill.on i{background:var(--ok);box-shadow:0 0 8px var(--ok)}a.btn,a.tbtn{text-decoration:none}#coach{grid-area:coach;background:#f6f5f0;color:#1d2127;display:flex;flex-direction:column;min-height:0;border-right:1px solid #dcd9d0}.coach-body{flex:1;overflow-y:auto;padding:26px 26px 18px;scrollbar-width:thin}.coach-type{display:inline-flex;align-items:center;gap:7px;font-family:var(--font-ui);font-weight:800;font-size:11.5px;letter-spacing:.05em;text-transform:uppercase;padding:6px 11px;border-radius:20px;background:#ece9e1;color:#5d6773}.coach-type.t-wire{background:#fff0e6;color:#c24a00}.coach-type.t-action{background:#e7f2ff;color:#1d5fa8}.coach-type.t-quiz{background:#f1e9ff;color:#6b3fb8}.coach-type.t-end{background:#e3f6ec;color:#1c7a47}.coach-type.t-measure,.coach-type.t-clamp{background:#e2f5f4;color:#0f6d6d}#coach h2{font-family:var(--font-ui);font-size:27px;line-height:1.18;margin:14px 0 10px;letter-spacing:-.015em}#coach .lead{font-size:16.5px;line-height:1.62;color:#2b3138;margin:0 0 18px}.schema{background:#fff;border:1px solid #e3e0d8;border-radius:14px;padding:12px 14px;margin:0 0 18px}.schema svg{display:block}.chips{display:flex;align-items:stretch;gap:8px;margin:0 0 16px}.chip{flex:1;display:flex;gap:10px;align-items:center;background:#fff;border:2px solid #d9d5cb;border-radius:14px;padding:10px 12px;min-width:0}.chip>div{min-width:0}.chip b{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;color:#fff;font-family:var(--font-ui);font-size:15px;flex:none;background:#8a939c}.chip span{display:block;font-size:12px;color:#6b7682;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chip strong{display:block;font-family:var(--font-ui);font-size:15px}.chip.start{border-color:#ff7a1a}.chip.start b{background:#ff7a1a}.chip.end{border-color:#2fbf6a}.chip.end b{background:#2fbf6a}.chip.probe-r{border-color:#ff3b30}.chip.probe-r b{background:#ff3b30}.chip.probe-b{border-color:#3a3f46}.chip.probe-b b{background:#3a3f46}.chip.clamp{border-color:#ff7a1a}.chip.clamp .ico{color:#ff7a1a;flex:none}.chip-arrow{display:grid;place-items:center;color:#9aa3ad;flex:none}.todo{display:flex;gap:12px;align-items:flex-start;background:#fff4ea;border:1px solid #ffd3b5;color:#6e3408;border-radius:14px;padding:14px 16px;font-size:15.5px;line-height:1.5;font-weight:500;margin-bottom:16px}.todo .ico{color:#ff5900;flex:none;margin-top:2px}.coach-buttons{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}#coach .btn{background:#fff;border-color:#d6d2c8;color:#1d2127}#coach .btn:hover:not(:disabled){border-color:#ff9a57}#coach .btn.accent{background:var(--accent);border-color:var(--accent);color:#fff}#coach .btn.accent:hover:not(:disabled){background:var(--accent-2)}#coach .btn.ghost{background:transparent}#coach .btn.big{height:46px;padding:0 18px;font-size:14px;justify-content:center}#coach .btn:disabled{opacity:.4}.done-banner{display:flex;gap:10px;align-items:center;background:#e3f6ec;color:#16663b;border:1px solid #b7e5cb;border-radius:14px;padding:13px 15px;font-weight:700;font-family:var(--font-ui);font-size:15px;animation:pop .35s ease;margin-bottom:16px}.why{border-top:1px solid #e3e0d8;margin-top:6px;padding-top:12px}.why summary{cursor:pointer;font-family:var(--font-ui);font-weight:800;color:#5d6773;display:inline-flex;gap:7px;align-items:center;list-style:none}.why summary::-webkit-details-marker{display:none}.why p{font-size:15px;line-height:1.62;color:#3a4148;margin:10px 0 0}.quiz{display:grid;gap:8px;margin:0 0 16px}.quiz-opt{display:flex;gap:12px;align-items:center;text-align:left;padding:12px 14px;border-radius:14px;background:#fff;border:2px solid #e3e0d8;font-size:15px;line-height:1.4;color:#1d2127}.quiz-opt:hover:not(:disabled){border-color:#ff9a57}.quiz-opt:disabled{cursor:default}.quiz-opt .qk{width:30px;height:30px;border-radius:9px;background:#efece4;display:grid;place-items:center;font-family:var(--font-ui);font-weight:800;flex:none}.quiz-opt.right{border-color:#2fbf6a;background:#effaf3}.quiz-opt.right .qk{background:#2fbf6a;color:#fff}.quiz-opt.wrong{border-color:#ff5d62;background:#fff1f1}.quiz-opt.wrong .qk{background:#ff5d62;color:#fff}.quiz-fb{display:flex;gap:10px;align-items:flex-start;padding:12px 14px;border-radius:12px;font-size:14.5px;line-height:1.5;animation:pop .3s ease}.quiz-fb .ico{flex:none;margin-top:1px}.quiz-fb.ok{background:#e3f6ec;color:#16663b}.quiz-fb.no{background:#fff4e6;color:#8a4a00}.end-box .section-title{color:#6b7682;margin-top:8px}.recap{list-style:none;padding:0;margin:8px 0 18px;display:grid;gap:10px}.recap li{display:flex;gap:10px;font-size:15px;line-height:1.5}.recap .ico{color:#2fbf6a;margin-top:3px;flex:none}.end-actions{display:grid;gap:8px}.coach-foot{display:grid;grid-template-columns:auto 1fr auto;gap:8px;align-items:center;padding:14px 18px;border-top:1px solid #e3e0d8;background:#efede6}.coach-foot>:nth-child(2){justify-self:center}.coach-foot .btn{height:40px}.coach-foot .next.ready{animation:nudge 1.4s ease-in-out infinite}@keyframes nudge{0%,to{box-shadow:0 0 #ff590000}50%{box-shadow:0 0 0 6px #ff590040}}@keyframes pop{0%{transform:scale(.97);opacity:0}to{transform:none;opacity:1}}#picker{position:absolute;inset:0;z-index:10;overflow-y:auto;background:linear-gradient(180deg,#0a0d11d6,#0a0d11f2);backdrop-filter:blur(5px)}.picker-inner{max-width:1120px;margin:0 auto;padding:44px 28px 36px}.kicker{color:var(--accent-2);font-family:var(--font-ui);font-weight:800;letter-spacing:.08em;text-transform:uppercase;font-size:12.5px}#picker h1{font-family:var(--font-ui);font-size:clamp(26px,3.2vw,40px);margin:10px 0 12px;letter-spacing:-.02em;line-height:1.12}.picker-lead{color:var(--muted);font-size:16px;line-height:1.6;max-width:760px;margin:0 0 28px}.lesson-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px}.lesson-card{text-align:left;padding:0;border-radius:16px;overflow:hidden;background:var(--panel-2);border:1px solid var(--line);color:var(--text);display:flex;flex-direction:column;transition:transform .15s,border-color .15s}.lesson-card:hover{transform:translateY(-3px);border-color:var(--accent)}.lesson-cover{position:relative;aspect-ratio:16 / 10;overflow:hidden}.lesson-cover img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}.lesson-n{position:absolute;left:12px;top:12px;width:36px;height:36px;border-radius:10px;background:var(--accent);color:#fff;display:grid;place-items:center;font-family:var(--font-ui);font-weight:800;font-size:16px;box-shadow:0 4px 14px #00000059}.lesson-done{position:absolute;right:10px;top:12px;display:inline-flex;gap:5px;align-items:center;background:#2fbf6af2;color:#fff;font-weight:700;font-size:12px;padding:4px 10px;border-radius:20px}.lesson-meta{padding:14px 16px 16px}.lesson-meta b{font-family:var(--font-ui);font-size:17px;display:block}.lesson-meta p{color:var(--muted);margin:6px 0 12px;line-height:1.45;font-size:13.5px}.lesson-tags{display:flex;gap:14px;color:var(--dim);font-size:12px}.lesson-tags span{display:inline-flex;gap:5px;align-items:center}.picker-foot{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-top:28px;color:var(--muted);font-size:13px}.picker-foot .howto{display:flex;gap:8px;align-items:center}.picker-foot .links{display:flex;gap:8px}@media(max-width:860px){#tut-app,#tut-app.picking{grid-template-columns:1fr;grid-template-rows:var(--top-h) 1fr auto;grid-template-areas:"top" "main" "coach"}#coach{max-height:50vh;border-right:0;border-top:1px solid #dcd9d0}.coach-body{padding:18px 18px 12px}#coach h2{font-size:22px}.tl-bar,#tut-top .brand-text span,.tut-actions .tbtn .lbl,.pill span{display:none}}