@charset "UTF-8";@import url(https://fonts.googleapis.com/css2?family=Fraunces:ital,wght@0,400;0,600;0,700;1,400&family=Plus+Jakarta+Sans:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;700&family=Playfair+Display:ital,wght@0,700;1,700&family=DM+Sans:wght@300;400;500;600&family=Space+Mono:wght@400;700&display=swap);#root{display:flex;flex-direction:column;min-height:100vh}:root{--bg:#f5f6fa;--bg2:#fff;--bg3:#eef0f8;--ink:#0d1117;--ink2:#4a5260;--ink3:#9099aa;--blue:#1d4ed8;--blue2:#2563eb;--blue3:#3b82f6;--blue-soft:#eff4ff;--blue-mid:#dbeafe;--orange:#ea580c;--orange-soft:#fff7ed;--border:#e4e7f0;--border2:#c8cdd8;--shadow:0 1px 3px #0000000f,0 4px 16px #0000000a;--shadow2:0 2px 8px #1d4ed81f,0 8px 32px #1d4ed814}body,html{height:100%;margin:0;padding:0}body,html{overflow-x:hidden}html{scroll-behavior:smooth}body{-webkit-font-smoothing:antialiased;color:#0d1117;color:var(--ink);font-family:Inter,sans-serif;overflow-x:hidden}main{flex:1 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li.last-green{color:var(--green);font-weight:500}.block-timeline{display:flex;flex-direction:column}.tl-step{align-items:flex-start;display:flex;gap:12px;padding-bottom:18px;position:relative}.tl-step:last-child{padding-bottom:0}.tl-step:before{background:var(--border);content:"";height:calc(100% - 14px);left:14px;position:absolute;top:30px;width:2px}.tl-step:last-child:before{display:none}.tl-dot{align-items:center;background:var(--card);border:2px solid var(--brand);border-radius:50%;color:var(--brand);display:flex;flex-shrink:0;font-size:12px;font-weight:500;height:30px;justify-content:center;width:30px;z-index:1}.tl-dot.done{background:var(--brand);color:#fff}.tl-content{padding-top:4px}.tl-title{font-size:14px;font-weight:500;margin-bottom:2px}.tl-desc{color:var(--muted);font-size:13px;line-height:1.6}.block-exercises{display:flex;flex-direction:column;gap:12px}.ex-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:1.25rem}.ex-num{color:var(--accent);font-size:11px;font-weight:500;letter-spacing:.08em;margin-bottom:.35rem;text-transform:uppercase}.ex-task{font-size:15px;font-weight:500;margin-bottom:.5rem}.ex-hint{color:var(--muted);font-size:13px;margin-bottom:.75rem}.ex-toggle{background:none;border:1.5px solid var(--border);border-radius:7px;color:var(--muted);font-size:12px;padding:6px 14px;transition:all .15s}.ex-toggle:hover{border-color:var(--accent);color:var(--accent)}.ex-answer{background:var(--surface);border-radius:8px;font-size:13px;line-height:1.7;margin-top:.75rem;padding:.85rem 1rem}.ex-answer code{background:var(--border);border-radius:4px;font-family:var(--font-mono);font-size:12px;padding:1px 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