:root{--brand: #F97316;--brand-dark: #EA580C;--brand-glow: color-mix(in srgb, #F97316 18%, transparent);--bg: #ffffff;--bg-secondary: #f8f9fb;--text: #111827;--text-secondary: #4b5563;--text-tertiary: #6b7280;--border: #e2e4e9;--radius: 12px;--max-width: 720px;--transition: .2s cubic-bezier(.25, .1, .25, 1)}@media(prefers-color-scheme:dark){:root{--bg: #0a0a0b;--bg-secondary: #131316;--text: #f0f0f3;--text-secondary: #a1a1aa;--text-tertiary: #71717a;--border: #27272a;--brand-glow: color-mix(in srgb, #F97316 12%, transparent)}}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-family:Plus Jakarta Sans,sans-serif;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;line-height:1.65;scroll-behavior:smooth}body{min-height:100dvh;display:flex;flex-direction:column}:focus-visible{outline:2px solid var(--brand);outline-offset:2px}.header[data-astro-cid-jkfvkvs4]{border-bottom:1px solid var(--border)}.header-inner[data-astro-cid-jkfvkvs4]{display:flex;justify-content:space-between;align-items:center;max-width:720px;margin:0 auto;padding:.85rem 1.5rem}.logo[data-astro-cid-jkfvkvs4]{text-decoration:none;display:flex;align-items:center;gap:.4rem;transition:opacity .15s}.logo[data-astro-cid-jkfvkvs4]:hover{opacity:.8}.logo-icon[data-astro-cid-jkfvkvs4]{width:26px;height:26px;flex-shrink:0}.logo-text[data-astro-cid-jkfvkvs4]{display:flex;align-items:baseline;gap:.15em;font-size:1.05rem;letter-spacing:-.03em}.logo-parent[data-astro-cid-jkfvkvs4]{font-weight:800;color:var(--text);-webkit-text-fill-color:var(--text)}.logo-sub[data-astro-cid-jkfvkvs4]{font-weight:400;color:var(--text-tertiary);-webkit-text-fill-color:var(--text-tertiary);font-size:.85em}.header-nav[data-astro-cid-jkfvkvs4]{display:flex;gap:.25rem}.header-nav[data-astro-cid-jkfvkvs4] a[data-astro-cid-jkfvkvs4]{color:var(--text-secondary);text-decoration:none;font-size:.85rem;font-weight:500;padding:.4rem .85rem;border-radius:8px;transition:color .15s,background .15s}.header-nav[data-astro-cid-jkfvkvs4] a[data-astro-cid-jkfvkvs4]:hover{color:var(--text);background:var(--bg-secondary)}.progress-bar-wrap[data-astro-cid-jkfvkvs4]{height:3px;background:var(--border)}.progress-bar[data-astro-cid-jkfvkvs4]{height:100%;background:var(--brand);transition:width .3s ease}.main[data-astro-cid-jkfvkvs4]{flex:1;width:100%;max-width:var(--max-width);margin:0 auto;padding:2rem 1.5rem}.breadcrumb[data-astro-cid-jkfvkvs4]{font-size:.8rem;color:var(--text-secondary);margin-bottom:1.5rem}.breadcrumb[data-astro-cid-jkfvkvs4] a[data-astro-cid-jkfvkvs4]{color:var(--brand);text-decoration:none}.breadcrumb[data-astro-cid-jkfvkvs4] a[data-astro-cid-jkfvkvs4]:hover{text-decoration:underline}.sep[data-astro-cid-jkfvkvs4]{margin:0 .4rem}.lesson-meta[data-astro-cid-jkfvkvs4]{display:flex;align-items:center;gap:.75rem;margin-bottom:.75rem}.lesson-badge[data-astro-cid-jkfvkvs4]{font-size:.8rem;font-weight:600;color:var(--brand);padding:.25rem .75rem;background:color-mix(in srgb,var(--brand) 10%,transparent);border-radius:6px}.lesson-time[data-astro-cid-jkfvkvs4]{font-size:.8rem;color:var(--text-secondary)}.lesson-title[data-astro-cid-jkfvkvs4]{font-size:1.75rem;font-weight:700;line-height:1.4;margin-bottom:.75rem}.lesson-desc[data-astro-cid-jkfvkvs4]{color:var(--text-secondary);font-size:.95rem;line-height:1.6;margin-bottom:2rem}.lesson-body[data-astro-cid-jkfvkvs4]{line-height:1.85;font-size:.95rem}.lesson-body[data-astro-cid-jkfvkvs4] h2{font-size:1.4rem;font-weight:750;margin:2.5rem 0 1rem;padding-bottom:.5rem;border-bottom:2px solid var(--brand)}.lesson-body[data-astro-cid-jkfvkvs4] h3{font-size:1.15rem;font-weight:650;margin:2rem 0 .75rem}.lesson-body[data-astro-cid-jkfvkvs4] p{margin-bottom:1.25rem}.lesson-body[data-astro-cid-jkfvkvs4] ul,.lesson-body[data-astro-cid-jkfvkvs4] ol{padding-left:1.5rem;margin-bottom:1.25rem}.lesson-body[data-astro-cid-jkfvkvs4] li{margin-bottom:.5rem}.lesson-body[data-astro-cid-jkfvkvs4] strong{color:var(--text);font-weight:650}.lesson-body[data-astro-cid-jkfvkvs4] code{padding:.2rem .5rem;background:var(--bg-secondary);border:1px solid var(--border);border-radius:4px;font-family:SFMono-Regular,Consolas,monospace;font-size:.85em}.lesson-body[data-astro-cid-jkfvkvs4] pre{padding:1.25rem;background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius);overflow-x:auto;margin-bottom:1.25rem;font-size:.85rem;line-height:1.6}.lesson-body[data-astro-cid-jkfvkvs4] pre code{padding:0;background:none;border:none;font-size:inherit}.lesson-body[data-astro-cid-jkfvkvs4] blockquote{border-left:3px solid var(--brand);padding:1rem 1.25rem;margin:1.25rem 0;background:color-mix(in srgb,var(--brand) 4%,var(--bg));border-radius:0 var(--radius) var(--radius) 0}.lesson-body[data-astro-cid-jkfvkvs4] a{color:var(--brand);text-decoration:underline;text-decoration-color:color-mix(in srgb,var(--brand) 30%,transparent);text-underline-offset:2px;transition:text-decoration-color var(--transition)}.lesson-body[data-astro-cid-jkfvkvs4] a:hover{text-decoration-color:var(--brand)}.lesson-body[data-astro-cid-jkfvkvs4] table{width:100%;border-collapse:collapse;margin-bottom:1.25rem;font-size:.85rem}.lesson-body[data-astro-cid-jkfvkvs4] th,.lesson-body[data-astro-cid-jkfvkvs4] td{padding:.6rem .85rem;border:1px solid var(--border);text-align:left}.lesson-body[data-astro-cid-jkfvkvs4] th{background:var(--bg-secondary);font-weight:650}.lesson-body[data-astro-cid-jkfvkvs4] img{max-width:100%;height:auto;border-radius:var(--radius)}.lesson-tags[data-astro-cid-jkfvkvs4]{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:2rem;padding-top:1.5rem;border-top:1px solid var(--border)}.tag[data-astro-cid-jkfvkvs4]{font-size:.8rem;color:var(--text-secondary);padding:.2rem .6rem;background:var(--bg-secondary);border-radius:4px}.lesson-nav[data-astro-cid-jkfvkvs4]{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-top:2.5rem;padding-top:2rem;border-top:1px solid var(--border)}.lesson-nav-link[data-astro-cid-jkfvkvs4]{display:flex;flex-direction:column;gap:.3rem;padding:1rem 1.25rem;border:1px solid var(--border);border-radius:var(--radius);text-decoration:none;transition:border-color .15s,background .15s}.lesson-nav-link[data-astro-cid-jkfvkvs4]:hover{border-color:var(--brand);background:color-mix(in srgb,var(--brand) 3%,transparent)}.lesson-nav-prev[data-astro-cid-jkfvkvs4]{text-align:left}.lesson-nav-next[data-astro-cid-jkfvkvs4]{text-align:right}.lesson-nav-label[data-astro-cid-jkfvkvs4]{font-size:.8rem;color:var(--brand);font-weight:600}.lesson-nav-title[data-astro-cid-jkfvkvs4]{font-size:.9rem;color:var(--text);font-weight:500;line-height:1.4}.lesson-back[data-astro-cid-jkfvkvs4]{margin-top:1.5rem}.back-link[data-astro-cid-jkfvkvs4]{display:inline-flex;align-items:center;gap:.4rem;color:var(--brand);text-decoration:none;font-size:.9rem;font-weight:600;padding:.5rem 1rem;border-radius:8px;transition:background .15s}.back-link[data-astro-cid-jkfvkvs4]:hover{background:color-mix(in srgb,var(--brand) 8%,transparent)}.footer[data-astro-cid-jkfvkvs4]{border-top:1px solid var(--border);padding:1.5rem;font-size:.8rem;color:var(--text-secondary)}.footer-inner[data-astro-cid-jkfvkvs4]{display:flex;align-items:center;gap:1rem;max-width:720px;margin:0 auto;flex-wrap:wrap}.footer-logo[data-astro-cid-jkfvkvs4]{font-size:.95rem;text-decoration:none;display:flex;align-items:center;gap:.3rem}.footer-logo-icon[data-astro-cid-jkfvkvs4]{width:20px;height:20px;flex-shrink:0}.footer-logo[data-astro-cid-jkfvkvs4] .logo-parent[data-astro-cid-jkfvkvs4]{font-weight:800;color:var(--text);-webkit-text-fill-color:var(--text)}ruby[data-astro-cid-jkfvkvs4].logo-parent{ruby-position:over}rt[data-astro-cid-jkfvkvs4]{font-size:.55em;letter-spacing:.05em;font-weight:400}.footer-logo[data-astro-cid-jkfvkvs4] .logo-sub[data-astro-cid-jkfvkvs4]{font-weight:400;color:var(--text-tertiary);-webkit-text-fill-color:var(--text-tertiary);font-size:.85em}.footer-copy[data-astro-cid-jkfvkvs4]{font-size:.75rem;color:var(--text-secondary)}.footer-nav[data-astro-cid-jkfvkvs4]{margin-left:auto;display:flex;gap:1rem}.footer-nav[data-astro-cid-jkfvkvs4] a[data-astro-cid-jkfvkvs4]{color:var(--text-secondary);text-decoration:none;font-size:.8rem;font-weight:500;transition:color .15s}.footer-nav[data-astro-cid-jkfvkvs4] a[data-astro-cid-jkfvkvs4]:hover{color:var(--brand)}@media(max-width:640px){.header-inner[data-astro-cid-jkfvkvs4]{padding:.75rem 1rem}.main[data-astro-cid-jkfvkvs4]{padding:1.5rem 1rem}.lesson-title[data-astro-cid-jkfvkvs4]{font-size:1.35rem}.lesson-nav[data-astro-cid-jkfvkvs4]{grid-template-columns:1fr}.lesson-nav-next[data-astro-cid-jkfvkvs4]{text-align:left}.footer-inner[data-astro-cid-jkfvkvs4]{flex-direction:column;text-align:center}.footer-nav[data-astro-cid-jkfvkvs4]{margin-left:0}}