@font-face{font-family:Mona Sans;src:url(../fonts/MonaSans.woff2) format("woff2");font-weight:200 900;font-stretch:75% 125%;font-display:swap}:root{--n-50: #f2f5f3;--n-100: #e4ebe6;--n-300: #b6bfb8;--n-500: #909692;--n-800: #232925;--n-900: #101411;--g-300: #5fed83;--g-500: #0fbf3e;--g-900: #0a241b;--line: #2f3631;--font: "Mona Sans", system-ui, -apple-system, "Segoe UI", sans-serif;--head: 56px}*,*:before,*:after{box-sizing:border-box}html{color-scheme:dark}body{margin:0;background:var(--n-900);color:var(--n-50);font:400 1rem/1.5 var(--font);-webkit-font-smoothing:antialiased}h1,p,ol,ul{margin:0;padding:0}ol,ul{list-style:none}button{font:inherit;color:inherit}a{color:var(--g-300)}code{font:600 .9em ui-monospace,SFMono-Regular,Menlo,monospace;background:var(--n-800);padding:1px 6px;border-radius:6px}:focus-visible{outline:3px solid var(--g-300);outline-offset:2px}.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}.app{min-height:100dvh;display:flex;flex-direction:column}.top{height:var(--head);display:flex;align-items:center;justify-content:space-between;padding:0 20px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:10px;color:var(--n-50);text-decoration:none;font-weight:700;line-height:1;min-height:44px}.brand svg{flex:none;display:block}nav{display:flex;gap:4px}nav a{color:var(--n-300);text-decoration:none;font-weight:600;font-size:.9375rem;line-height:1;padding:8px 12px;min-height:40px;display:inline-flex;align-items:center;border-radius:8px}nav a[aria-current=page]{color:var(--n-50);background:var(--n-800)}nav a.repo{margin-left:6px;padding:0;width:40px;min-height:40px;justify-content:center;border:1px solid var(--line);border-radius:10px;color:var(--n-50)}nav a.repo:hover{background:var(--n-800)}.build{flex:1;display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:20px;padding:20px;min-height:0}.board{position:relative;border-radius:16px;overflow:hidden;background:#7a5f43;min-height:420px;height:calc(100dvh - var(--head) - 40px)}.board-canvas{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:none}.board-status{position:absolute;inset:0;display:grid;place-items:center;padding:24px;text-align:center;color:var(--n-900);font-weight:600;pointer-events:none}.modes{position:absolute;top:12px;right:12px;display:flex;padding:3px;gap:2px;background:#101411e6;border-radius:10px}.modes label{position:relative;min-height:36px;padding:0 12px;display:inline-flex;align-items:center;border-radius:8px;color:var(--n-300);font-size:.875rem;font-weight:600;cursor:pointer}.modes label.on{background:var(--n-50);color:var(--n-900)}.modes input{position:absolute;inset:0;opacity:0;margin:0;cursor:pointer}.modes label:has(input:focus-visible){outline:3px solid var(--g-300);outline-offset:1px}.nav{position:absolute;left:12px;bottom:12px;display:flex;align-items:center;gap:2px;padding:3px;background:#101411e6;border-radius:10px}.nav button{min-height:40px;min-width:40px;padding:0 10px;border:0;border-radius:8px;cursor:pointer;background:transparent;color:var(--n-50);font-size:1.75rem;font-weight:600;line-height:1}.nav button:hover{background:var(--n-800)}.nav .nav-reset{font-size:.875rem;color:var(--n-300)}.nav-name{min-width:96px;padding:0 6px;text-align:center;color:var(--n-300);font-size:.875rem;font-weight:600}.panel{display:flex;flex-direction:column;gap:16px;align-self:center}.rail{display:flex;gap:8px;flex-wrap:wrap}.mark{width:24px;height:24px;border-radius:50%;display:grid;place-items:center;font-size:.75rem;font-weight:700;border:1px solid var(--line);color:var(--n-500)}.rail .current .mark{background:var(--n-50);color:var(--n-900);border-color:var(--n-50)}.rail .done .mark{background:var(--g-500);color:var(--n-900);border-color:var(--g-500)}h1{font-size:1.75rem;line-height:1.15;font-weight:700;outline:none}.note{min-height:1.5em;color:var(--n-300)}.note:empty{display:none}.finish{display:flex;flex-direction:column;gap:12px}.links{display:flex;flex-direction:column;gap:6px}.progress{display:flex;align-items:center;gap:12px;color:var(--n-300);font-weight:600;font-size:.875rem}.bar{flex:1;height:6px;border-radius:3px;background:var(--n-800);overflow:hidden}.bar i{display:block;height:100%;background:var(--g-500);transition:width .3s}.actions{display:flex;align-items:center;gap:16px}.primary{min-height:52px;padding:0 20px;border:0;border-radius:12px;cursor:pointer;background:var(--g-500);color:var(--n-900);font-weight:700;font-size:1.0625rem}.primary:hover{background:var(--g-300)}.text{background:none;border:0;color:var(--g-300);font-weight:600;font-size:.875rem;padding:12px 4px;cursor:pointer;min-height:44px}.tools{display:flex;gap:8px;flex-wrap:wrap}.tool{min-height:44px;padding:0 14px;border-radius:10px;border:1px solid var(--line);background:var(--n-800);font-size:.875rem;font-weight:600;cursor:pointer}.tool:disabled{opacity:.4;cursor:default}.tool.danger{background:#3a1c1c;border-color:#7c3030}.notice{padding:10px 12px;border-radius:10px;background:#3a1c1c;border:1px solid #7c3030}.page{max-width:760px;margin:0 auto;padding:32px 20px;display:flex;flex-direction:column;gap:20px;width:100%}.video{aspect-ratio:16 / 9;border-radius:16px;overflow:hidden;background:var(--n-800)}.video iframe{width:100%;height:100%;border:0;display:block}.play{position:relative;width:100%;height:100%;padding:0;border:0;cursor:pointer;display:block;background:var(--n-800) center / cover no-repeat url(../images/guide-video.webp)}.play:after{content:"";position:absolute;inset:0;background:linear-gradient(to top,#101411b3,#1014110d 55%)}.play-icon{position:absolute;z-index:1;left:50%;top:50%;width:72px;height:72px;margin:-36px 0 0 -36px;border-radius:50%;background:var(--g-500);box-shadow:0 4px 24px #00000073}.play-icon:before{content:"";position:absolute;left:29px;top:22px;border-left:22px solid var(--n-900);border-top:14px solid transparent;border-bottom:14px solid transparent}.play:hover .play-icon{background:var(--g-300)}.play-label{position:absolute;z-index:1;left:16px;bottom:14px;font-weight:700;font-size:1.0625rem;color:var(--n-50)}@media(max-width:860px){.build{grid-template-columns:minmax(0,1fr);padding:12px;gap:12px}.board{height:42dvh;min-height:240px}.modes{top:8px;right:8px}.nav{left:8px;bottom:8px}.nav-name{min-width:72px}.modes label{padding:0 9px;font-size:.8125rem}.panel{align-self:stretch;gap:12px}h1{font-size:1.375rem}}@media(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}