:root{--canvas:#e9eeeb;--frame:#f5f8f6;--card:#fff;--card-2:#f0f5f2;--glass:#ffffffe6;--glass-soft:#ffffffb8;--ink:#0b1510;--ink-2:#3c4a43;--muted:#5f6e66;--line:#e2e9e5;--line-strong:#cbd6d0;--solid:#0f1a14;--solid-2:#16a34a;--on-solid:#ecfdf3;--nav-current:#fff;--on-nav-current:#0b1510;--accent:#3ddc84;--accent-strong:#16a34a;--accent-soft:#dcfce7;--accent-ink:#14532d;--on-accent:#04130a;--warn:#f2c94c;--warn-soft:#fff6dc;--warn-ink:#6b4d00;--danger:#d23b22;--danger-soft:#fde4de;--danger-ink:#8a1f0c;--hero-a:#fff;--hero-b:#eef6f1;--hero-c:#dbe8e0;--stage-a:#fff;--stage-b:#ecf3ef;--stage-c:#d6e3db;--fig-base:#e6eeea;--fig-part:#f6faf8;--fig-stroke:#0b1510;--r-xl:28px;--r-lg:22px;--r-md:16px;--shadow:0 1px 2px #0b15100d, 0 8px 24px #0b15100f;--shadow-lg:0 16px 40px #0b15102e;--card-border:#e2e9e5;--glow:none;--focus-ring:0 0 0 3px #16a34a59;--mono:ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;--sans:"Inter", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--topbar-h:76px;--stage-h:min(60vh, 620px);--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--canvas:#030605;--frame:#070b09;--card:#0e1512;--card-2:#15201a;--glass:#0e1512e0;--glass-soft:#0e1512b3;--ink:#e8f6ed;--ink-2:#a8bdb1;--muted:#83998d;--line:#1b2822;--line-strong:#283a31;--solid:#14261c;--solid-2:#1f6b42;--on-solid:#eafff2;--nav-current:#3ddc84;--on-nav-current:#04130a;--accent:#3ddc84;--accent-strong:#5ef2a0;--accent-soft:#0f2a1b;--accent-ink:#9ff5c4;--on-accent:#04130a;--warn:#e5b73b;--warn-soft:#2e2512;--warn-ink:#f3d68a;--danger:#e0533a;--danger-soft:#34160f;--danger-ink:#ffb3a3;--hero-a:#12241b;--hero-b:#0a130e;--hero-c:#070b09;--stage-a:#14261c;--stage-b:#0b1510;--stage-c:#070b09;--fig-base:#13201a;--fig-part:#1a2b22;--fig-stroke:#dff7e9;--shadow:0 1px 2px #0006, 0 8px 24px #00000059;--shadow-lg:0 16px 40px #0009;--card-border:#3ddc841f;--glow:0 0 0 1px #3ddc8473, 0 0 22px #3ddc8447;--focus-ring:0 0 0 3px #3ddc8473, 0 0 16px #3ddc8459;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}}:root[data-theme=dark]{--canvas:#030605;--frame:#070b09;--card:#0e1512;--card-2:#15201a;--glass:#0e1512e0;--glass-soft:#0e1512b3;--ink:#e8f6ed;--ink-2:#a8bdb1;--muted:#83998d;--line:#1b2822;--line-strong:#283a31;--solid:#14261c;--solid-2:#1f6b42;--on-solid:#eafff2;--nav-current:#3ddc84;--on-nav-current:#04130a;--accent:#3ddc84;--accent-strong:#5ef2a0;--accent-soft:#0f2a1b;--accent-ink:#9ff5c4;--on-accent:#04130a;--warn:#e5b73b;--warn-soft:#2e2512;--warn-ink:#f3d68a;--danger:#e0533a;--danger-soft:#34160f;--danger-ink:#ffb3a3;--hero-a:#12241b;--hero-b:#0a130e;--hero-c:#070b09;--stage-a:#14261c;--stage-b:#0b1510;--stage-c:#070b09;--fig-base:#13201a;--fig-part:#1a2b22;--fig-stroke:#dff7e9;--shadow:0 1px 2px #0006, 0 8px 24px #00000059;--shadow-lg:0 16px 40px #0009;--card-border:#3ddc841f;--glow:0 0 0 1px #3ddc8473, 0 0 22px #3ddc8447;--focus-ring:0 0 0 3px #3ddc8473, 0 0 16px #3ddc8459;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}*{box-sizing:border-box}html,body{background:var(--frame);color:var(--ink);font-family:var(--sans);-webkit-text-size-adjust:100%;margin:0;font-size:16px;line-height:1.5}button,input,select{font:inherit;color:inherit}a{color:inherit}:focus-visible{outline:2px solid var(--ink);outline-offset:2px}.visually-hidden{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.muted{color:var(--muted)}.small{font-size:.8125rem}.mono{font-family:var(--mono)}.icon{fill:none;stroke:currentColor;stroke-width:1.8px;stroke-linecap:round;stroke-linejoin:round;flex:none;width:20px;height:20px}.app{background:var(--frame);flex-direction:column;min-height:100vh;display:flex}.topbar{height:var(--topbar-h);z-index:30;background:var(--frame);grid-template-columns:1fr auto 1fr;align-items:center;gap:12px;padding:0 20px;display:grid;position:relative}.brand{align-items:center;gap:12px;min-width:0;text-decoration:none;display:flex}.brand-logo{flex:none;width:auto;height:58px;display:block}.brand-tag{border-left:1px solid var(--line-strong);max-width:190px;color:var(--muted);padding-left:12px;font-size:.75rem;line-height:1.35;display:block}.pill-nav{background:var(--solid);border-radius:999px;gap:2px;padding:5px;display:flex}.pill-nav a{color:color-mix(in srgb, var(--on-solid) 72%, transparent);white-space:nowrap;border-radius:999px;padding:9px 22px;font-size:.9rem;font-weight:550;text-decoration:none;transition:background .15s,color .15s}.pill-nav a:hover{color:var(--on-solid)}.pill-nav a[aria-current=page]{background:var(--nav-current);color:var(--on-nav-current)}.topbar-end{justify-content:flex-end;align-items:center;gap:10px;display:flex}.lang-switch{background:var(--card);border-radius:999px;flex:none;padding:4px;display:flex}.lang-switch button{cursor:pointer;background:0 0;border:0;border-radius:999px;min-height:34px;padding:6px 12px;font-size:.8rem;font-weight:650}.lang-switch button[aria-pressed=true]{background:var(--solid);color:var(--on-solid)}.shell{flex:1;grid-template-columns:minmax(0,1fr);padding:0 20px 8px;display:grid}main{width:100%;min-width:0;padding-bottom:16px}.footer{text-align:center;color:var(--muted);padding:4px 20px 18px;font-size:.75rem}.card{background:var(--card);border-radius:var(--r-xl);box-shadow:var(--shadow), inset 0 0 0 1px var(--card-border)}.card-head{justify-content:space-between;align-items:center;gap:10px;display:flex}.card-head h2{letter-spacing:-.01em;margin:0;font-size:1.2rem;font-weight:700}.eyebrow{letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-size:.7rem;font-weight:650}.tag-draft{letter-spacing:.1em;color:var(--warn-ink);background:var(--warn-soft);box-shadow:inset 0 0 0 1px color-mix(in srgb, var(--warn-ink) 22%, transparent);border-radius:999px;flex:none;padding:3px 8px;font-size:.625rem;font-weight:750}.tag-draft.large{padding:5px 12px;font-size:.72rem}.draft-banner{background:var(--card);border-radius:var(--r-lg);color:var(--ink-2);box-shadow:var(--shadow);align-items:center;gap:12px;margin:0 0 16px;padding:12px 16px;font-size:.875rem;display:flex}.warn-square{background:var(--warn);width:36px;height:36px;color:var(--on-accent);border-radius:11px;flex:none;place-items:center;display:grid}.chip{background:var(--card);box-shadow:inset 0 0 0 1px var(--line);cursor:pointer;white-space:nowrap;border:0;border-radius:999px;min-height:36px;padding:6px 14px;font-size:.8125rem;font-weight:550}.chip[aria-pressed=true]{background:var(--solid);color:var(--on-solid);box-shadow:none}.btn{background:var(--solid);color:var(--on-solid);cursor:pointer;border:0;border-radius:999px;min-height:46px;padding:11px 22px;font-weight:650}.btn.secondary{background:var(--card);color:var(--ink);box-shadow:inset 0 0 0 1.5px var(--line-strong)}.btn.done{background:var(--accent);color:var(--on-accent)}.btn-arrow{align-items:center;gap:12px;padding:6px 6px 6px 22px;display:inline-flex}.btn-arrow-icon{background:var(--accent);width:36px;height:36px;color:var(--on-accent);border-radius:50%;place-items:center;display:grid}.btn-arrow-icon .icon{width:18px;height:18px}.round-icon{width:38px;height:38px;box-shadow:inset 0 0 0 1px var(--line);color:var(--ink);border-radius:50%;flex:none;place-items:center;display:grid}.round-icon .icon{width:18px;height:18px}.round-icon.dark{background:var(--solid);color:var(--on-solid);box-shadow:none}.bar{background:var(--card-2);border-radius:999px;height:8px;display:block;overflow:hidden}.bar>span{background:var(--solid-2);border-radius:999px;min-width:0;height:100%;display:block}.dash{grid-template-columns:minmax(0,1.15fr) minmax(0,1fr) minmax(320px,380px);grid-template-areas:"hero hero bike""recent remind ask";gap:16px;display:grid}.hero{background:radial-gradient(ellipse 70% 80% at 68% 45%, var(--hero-a) 0%, var(--hero-b) 55%, var(--hero-c) 100%);min-height:500px;box-shadow:none;flex-direction:column;grid-area:hero;padding:26px;display:flex;position:relative;overflow:hidden}.hero-figure{opacity:0;transition:opacity .6s;position:absolute;inset:0 -4% 40px 32%}.hero-figure.is-ready{opacity:1}.hero-figure canvas{display:block}.hero-copy{z-index:1;pointer-events:none;max-width:400px;position:relative}.pill-chip{background:var(--card);border-radius:999px;align-items:center;gap:8px;padding:7px 14px 7px 10px;font-size:.8rem;font-weight:600;display:inline-flex}.dot{background:var(--accent);width:9px;height:9px;box-shadow:0 0 0 3px color-mix(in srgb, var(--accent) 40%, transparent);border-radius:50%}.hero-title{letter-spacing:-.035em;margin:18px 0 10px;font-size:clamp(2.3rem,4.4vw,3.6rem);font-weight:750;line-height:1}.hero-sub{color:var(--ink-2);max-width:340px;margin:0 0 22px}.stats{flex-direction:column;align-items:flex-start;gap:8px;margin:0;padding:0;list-style:none;display:flex}.stats li{background:var(--glass);border-radius:var(--r-md);align-items:center;gap:10px;padding:8px 16px 8px 8px;display:flex}.stats strong{margin-right:6px;font-size:1.05rem}.stats span span{color:var(--ink-2);font-size:.85rem}.stat-icon{background:var(--accent);border-radius:11px;flex:none;place-items:center;width:36px;height:36px;display:grid}.stat-icon .icon{width:18px;height:18px}.hero-bar{z-index:1;justify-content:flex-end;align-items:center;margin-top:auto;display:flex;position:relative}.ask{flex-direction:column;grid-area:ask;gap:10px;padding:22px;display:flex}.ask>p{margin:-4px 0 4px}.tiles{grid-template-columns:1fr 1fr;gap:10px;margin:0;padding:0;list-style:none;display:grid}.tile{text-align:left;background:var(--card-2);cursor:pointer;border:0;border-radius:20px;flex-direction:column;gap:10px;width:100%;height:100%;min-height:138px;padding:14px;transition:transform .15s,background .15s;display:flex}.tile:hover{transform:translateY(-2px)}.tile-icon{background:var(--card);border-radius:12px;flex:none;place-items:center;width:38px;height:38px;display:grid}.tile-title{font-size:.92rem;font-weight:650;line-height:1.3}.tile-meta{color:var(--muted);justify-content:space-between;align-items:center;gap:6px;margin-top:auto;font-size:.75rem;display:flex}.tiles li:first-child .tile{background:var(--solid);color:var(--on-solid)}.tiles li:first-child .tile-icon{background:var(--accent);color:var(--on-accent)}.tiles li:first-child .tile-meta{color:color-mix(in srgb, var(--on-solid) 60%, transparent)}.ask-search{background:var(--card-2);color:var(--muted);border-radius:999px;align-items:center;gap:10px;margin-top:auto;padding:6px 6px 6px 16px;display:flex}.ask-search input{width:100%;min-width:0;color:var(--ink);background:0 0;border:0;outline:none;padding:8px 0;font-size:.9rem}.lime-btn{background:var(--accent);width:42px;height:42px;color:var(--on-accent);cursor:pointer;border:0;border-radius:50%;flex:none;place-items:center;display:grid}.dark-card{background:var(--solid);color:var(--on-solid);padding:22px}.dark-card .dim{color:color-mix(in srgb, var(--on-solid) 62%, transparent)}.dark-card h2{margin:16px 0 2px;font-weight:550}.lime-square{background:var(--accent);width:42px;height:42px;color:var(--on-accent);border-radius:13px;place-items:center;display:grid}.dark-figure{letter-spacing:-.02em;margin:0 0 6px;font-size:2rem;font-weight:750}.dark-figure span{color:color-mix(in srgb, var(--on-solid) 75%, transparent);letter-spacing:0;font-size:.9rem;font-weight:500}.dark-card p:last-child{margin:0}.list-page{padding-top:4px}.page-head{align-items:center;gap:16px;margin:4px 0 20px;display:flex}.page-head h1{letter-spacing:-.035em;margin:0 0 4px;font-size:clamp(1.9rem,3.6vw,2.8rem);font-weight:800;line-height:1.05}.page-head p{color:var(--ink-2);margin:0;font-size:1.02rem}.title-icon{background:var(--accent);width:60px;height:60px;color:var(--on-accent);border-radius:18px;flex:none;place-items:center;display:grid}.title-icon .icon{width:30px;height:30px}.list-cards{grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px;margin:0;padding:0;list-style:none;display:grid}.list-card{text-align:left;cursor:pointer;border:0;flex-direction:column;gap:8px;width:100%;height:100%;padding:20px;transition:transform .15s;display:flex}.list-card:hover{transform:translateY(-2px)}.list-card .tile-icon{background:var(--accent)}.list-card-top{justify-content:space-between;align-items:center;margin-bottom:6px;display:flex}.list-card-title{letter-spacing:-.01em;font-size:1.25rem;font-weight:700;line-height:1.25}.list-card-body{color:var(--ink-2);font-size:.92rem}.list-card .bar{margin-top:6px}.list-card-meta{color:var(--muted);justify-content:space-between;align-items:center;margin-top:auto;padding-top:8px;font-size:.8rem;display:flex}.lesson-head{background:var(--card);border-radius:var(--r-xl);box-shadow:var(--shadow);grid-template-columns:minmax(0,1.5fr) minmax(340px,1fr);align-items:stretch;gap:16px;margin-bottom:14px;padding:16px;display:grid}.lesson-head.single{grid-template-columns:minmax(0,1fr)}.lesson-head-main{align-items:center;gap:14px;min-width:0;padding:4px;display:flex}.round-back{background:var(--card-2);cursor:pointer;border:0;border-radius:50%;flex:none;align-self:flex-start;place-items:center;width:40px;height:40px;display:grid}.round-back:hover{background:var(--line)}.round-back .icon{width:18px;height:18px}.lesson-head .title-icon{border-radius:20px;width:64px;height:64px}.lesson-head .title-icon .icon{width:30px;height:30px}.lesson-title{flex:1;min-width:0}.lesson-title h1{letter-spacing:-.035em;margin:0;font-size:clamp(1.7rem,3vw,2.4rem);font-weight:800;line-height:1.05}.lesson-sub{max-width:70ch;color:var(--ink-2);-webkit-line-clamp:2;-webkit-box-orient:vertical;margin:4px 0 0;font-size:.95rem;display:-webkit-box;overflow:hidden}.title-meta{flex-wrap:wrap;gap:6px;margin:10px 0 0;padding:0;list-style:none;display:flex}.title-meta li{background:var(--card-2);border-radius:999px;align-items:center;gap:6px;min-height:28px;padding:4px 11px;font-size:.78rem;font-weight:600;display:inline-flex}.title-meta li .icon{width:15px;height:15px}.title-meta li.title-chip{background:var(--solid);color:var(--on-solid);padding-left:8px}.title-meta li.title-chip .icon{color:var(--accent)}.brand-logo-mark{flex:none;width:22px;height:auto}.lesson-glance{grid-template-rows:auto auto;gap:10px;min-width:0;display:grid}.glance-progress{border-radius:var(--r-lg);background:var(--solid);color:var(--on-solid);flex-direction:column;gap:6px;padding:14px 16px;display:flex}.glance-row{justify-content:space-between;align-items:center;gap:10px;display:flex}.glance-label{letter-spacing:.08em;text-transform:uppercase;color:color-mix(in srgb, var(--on-solid) 62%, transparent);font-size:.72rem;font-weight:650}.glance-status{color:var(--accent);font-size:.8rem;font-weight:750}.glance-step{white-space:nowrap;text-overflow:ellipsis;margin:0;font-size:.9rem;overflow:hidden}.glance-step strong{font-size:1.35rem}.glance-step .muted{color:color-mix(in srgb, var(--on-solid) 62%, transparent)}.glance-progress .bar{background:color-mix(in srgb, var(--on-solid) 15%, transparent)}.glance-progress .bar>span{background:var(--accent)}.glance-stats{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin:0;padding:0;list-style:none;display:grid}.glance-stats a{background:var(--card-2);border-radius:16px;grid-template-rows:auto auto;grid-template-columns:auto 1fr;align-items:center;column-gap:8px;height:100%;padding:10px 12px;text-decoration:none;transition:background .15s;display:grid}.glance-stats a:hover{background:var(--accent-soft)}.glance-stats .icon{grid-row:span 2;width:20px;height:20px}.glance-stats strong{font-size:1.1rem;line-height:1.1}.glance-stats span{color:var(--muted);white-space:nowrap;text-overflow:ellipsis;font-size:.72rem;overflow:hidden}#manual-tools,#manual-precautions{scroll-margin-top:16px}@media (width<=1100px){.lesson-head{grid-template-columns:minmax(0,1fr)}}.lesson-grid{grid-template-columns:minmax(0,1.5fr) minmax(340px,1fr);align-items:start;gap:16px;display:grid}.lesson-stage{flex-direction:column;gap:10px;display:flex;position:sticky;top:12px}.lesson-manual{background:var(--card);border-radius:var(--r-xl);min-width:0;box-shadow:var(--shadow);padding:20px}.figure{height:var(--stage-h);border-radius:var(--r-xl);background:radial-gradient(ellipse 75% 70% at 50% 42%, var(--stage-a) 0%, var(--stage-b) 58%, var(--stage-c) 100%);touch-action:none;min-height:300px;position:relative;overflow:hidden}.figure-stage{position:absolute;inset:0}.figure-stage canvas{cursor:grab;display:block}.figure-corner{letter-spacing:.06em;text-transform:uppercase;color:var(--ink-2);pointer-events:none;background:var(--glass);border-radius:999px;max-width:48%;padding:5px 12px;font-size:.7rem;font-weight:600;line-height:1.4;position:absolute}.figure-status{max-width:calc(100% - 28px);color:var(--ink-2);background:var(--glass);pointer-events:none;text-align:center;border-radius:999px;padding:5px 12px;font-size:.75rem;position:absolute;bottom:56px;left:50%;transform:translate(-50%)}.figure-corner.tl{top:14px;left:14px}.figure-corner.tr{text-align:right;top:14px;right:14px}.figure-corner.bl{color:var(--muted);text-transform:none;letter-spacing:0;font-weight:500;bottom:14px;left:14px}.figure-corner.br{text-align:right;text-transform:none;letter-spacing:0;color:var(--on-solid);background:var(--solid);font-size:.8rem;bottom:14px;right:14px}.figure-tools{flex-wrap:wrap;align-items:center;gap:6px;display:flex;position:absolute;top:52px;left:14px}.figure-tools .chip{background:var(--glass);min-height:32px;box-shadow:none;padding:4px 12px;font-size:.75rem}.figure-tools .chip[aria-pressed=true]{background:var(--solid);color:var(--on-solid)}.figure-explode{text-transform:uppercase;letter-spacing:.06em;background:var(--glass);border-radius:999px;align-items:center;gap:8px;min-height:32px;padding:2px 12px;font-size:.7rem;font-weight:650;display:flex}.figure-explode input{width:90px;accent-color:var(--ink)}.figure-legend{flex-direction:column;gap:3px;max-height:calc(100% - 150px);margin:0;padding:0;list-style:none;display:flex;position:absolute;top:94px;left:14px;overflow-y:auto}.figure-legend button{color:var(--muted);cursor:pointer;text-align:left;background:var(--glass-soft);border:0;border-radius:999px;align-items:center;gap:6px;padding:3px 10px 3px 3px;font-size:.7rem;display:flex}.figure-legend button.is-step{color:var(--ink);background:var(--glass)}.figure-legend 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