@font-face{font-family:JetBrains Mono;font-style:normal;font-weight:400 700;font-display:swap;src:url(/fonts/jetbrains-mono-latin-ext.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:JetBrains Mono;font-style:normal;font-weight:400 700;font-display:swap;src:url(/fonts/jetbrains-mono-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Space Grotesk;font-style:normal;font-weight:400 700;font-display:swap;src:url(/fonts/space-grotesk-latin-ext.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Space Grotesk;font-style:normal;font-weight:400 700;font-display:swap;src:url(/fonts/space-grotesk-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}:root{color-scheme:dark;--bg: #0b0d0c;--bg-panel: #111513;--bg-panel-2: #161b18;--amber: #46e07f;--amber-soft: #6fdc97;--amber-dim: #1f5a36;--teal: #8fe3b0;--text: #e6ebe8;--text-dim: #9ea8a2;--text-faint: #7a847e;--border: #212925;--border-strong: #2e3a33;--error: #ff7a6b;--r: 8px;--ease: cubic-bezier(.16,1,.3,1);--font-mono: "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;--font-sans: "Space Grotesk", "Segoe UI", system-ui, sans-serif}*{box-sizing:border-box}[hidden]{display:none!important}html{scroll-behavior:smooth}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-sans);font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased}::selection{background:#46e07f47;color:#fff}:focus-visible{outline:2px solid var(--amber);outline-offset:2px}h1,h2,h3{letter-spacing:-.02em;line-height:1.15;text-wrap:balance}p{text-wrap:pretty}.container{max-width:1180px;margin:0 auto;padding:0 24px}.container.narrow{max-width:780px}.site-header{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:64px;padding:0 24px;border-bottom:1px solid var(--border);background:#0b0d0cd6;position:sticky;top:0;z-index:50;backdrop-filter:blur(10px) saturate(140%);-webkit-backdrop-filter:blur(10px) saturate(140%)}.brand{display:flex;align-items:center;gap:10px;text-decoration:none}.brand .mark{flex:0 0 auto;border-radius:6px;display:block}.brand .name{font-size:17px;font-weight:600;color:var(--text);letter-spacing:-.01em}.brand .name b{color:var(--amber);font-weight:700}.site-nav{display:flex;gap:2px;margin-left:auto}.site-nav a{font-size:14px;color:var(--text-dim);text-decoration:none;white-space:nowrap;padding:6px 10px;border-radius:var(--r);transition:color .2s var(--ease),background .2s var(--ease)}.site-nav a:hover{color:var(--text);background:var(--bg-panel-2)}.site-nav a.active{color:var(--amber)}.skip-link{position:absolute;left:16px;top:-48px;z-index:100;background:var(--amber);color:#07120b;font-weight:600;padding:8px 14px;border-radius:var(--r);text-decoration:none;transition:top .15s}.skip-link:focus{top:12px}#content:focus{outline:none}.search-btn{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;font:500 14px var(--font-sans);color:var(--text-dim);background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--r);padding:6px 8px 6px 12px;cursor:pointer;transition:border-color .2s,color .2s}.search-btn:hover{color:var(--text);border-color:var(--border-strong)}.search-btn kbd,.search-keys kbd{font:600 11px var(--font-mono);color:var(--text-faint);background:var(--bg);border:1px solid var(--border-strong);border-radius:4px;padding:1px 6px}.search-dialog{width:min(640px,calc(100vw - 32px));max-height:min(70dvh,620px);margin:12vh auto auto;padding:0;color:var(--text);background:var(--bg-panel);border:1px solid var(--border-strong);border-radius:var(--r);box-shadow:0 30px 80px -20px #000000e6;overflow:hidden}.search-dialog[open]{display:flex;flex-direction:column}.search-dialog::backdrop{background:#050706b8;backdrop-filter:blur(3px)}.search-form{padding:14px 16px 10px;border-bottom:1px solid var(--border)}.search-form label{display:block;font-size:13px;font-weight:600;color:var(--text-dim);margin-bottom:6px}.search-form input{width:100%;font:500 17px var(--font-sans);color:var(--text);background:var(--bg);border:1px solid var(--border-strong);border-radius:var(--r);padding:10px 12px;outline:none}.search-form input:focus{border-color:var(--amber-dim);box-shadow:0 0 0 3px #46e07f1f}.search-form input::placeholder{color:var(--text-faint)}.search-status{margin:0;padding:10px 18px 4px;font-size:13px;color:var(--text-faint)}.search-results{list-style:none;margin:0;padding:4px 8px 8px;overflow-y:auto}.search-results a{display:grid;grid-template-columns:92px 1fr;gap:2px 12px;padding:10px;border-radius:6px;text-decoration:none;outline:none}.search-results a:hover,.search-results a:focus{background:var(--bg-panel-2)}.search-results a:focus{box-shadow:inset 0 0 0 1px var(--amber-dim)}.sr-kind{grid-row:span 2;align-self:start;justify-self:start;margin-top:2px;font:600 11px var(--font-mono);color:var(--amber-soft);background:var(--bg);border:1px solid var(--border);border-radius:4px;padding:2px 6px;white-space:nowrap}.sr-label{font-weight:600;color:var(--text)}.sr-desc{font-size:13.5px;color:var(--text-dim);line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.search-keys{margin:0;padding:10px 18px;border-top:1px solid var(--border);font-size:12px;color:var(--text-faint);display:flex;gap:6px;align-items:center;flex-wrap:wrap}.search-keys kbd:not(:first-child){margin-left:2px}@media(hover:none){.search-keys,.search-btn kbd{display:none}}.nav-toggle-input{position:absolute;opacity:0;pointer-events:none}.nav-toggle-btn{display:none;flex-direction:column;justify-content:center;align-items:center;gap:4px;width:40px;height:40px;cursor:pointer;border-radius:var(--r)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}.nav-toggle-btn span:not(.sr-only){display:block;width:18px;height:2px;background:var(--text-dim);border-radius:2px}.nav-toggle-btn:hover span:not(.sr-only){background:var(--text)}.nav-toggle-input:focus-visible~.nav-toggle-btn{outline:2px solid var(--amber);outline-offset:2px}.site-footer{border-top:1px solid var(--border);margin-top:112px;padding:56px 24px 32px;font-size:14px;color:var(--text-faint)}.site-footer .inner{max-width:1132px;margin:0 auto;display:grid;grid-template-columns:2fr repeat(3,1fr);gap:32px}.site-footer .f-brand p{margin:12px 0 0;max-width:320px;line-height:1.6}.site-footer nav{display:flex;flex-direction:column;gap:8px}.site-footer h2{font-size:14px;font-weight:600;color:var(--text);margin:0 0 4px;letter-spacing:0}.site-footer nav a{color:var(--text-faint);text-decoration:none;transition:color .2s}.site-footer nav a:hover{color:var(--text)}.site-footer .f-copy{max-width:1132px;margin:40px auto 0;padding-top:20px;border-top:1px solid var(--border);font-size:12.5px}.prose h1{font-size:clamp(28px,4vw,40px);margin:28px 0 12px}.prose h2{font-size:24px;margin:48px 0 14px}.prose h3{font-size:18px;margin:30px 0 8px;color:var(--text)}.prose p{color:var(--text-dim);margin:0 0 16px;max-width:70ch}.prose p strong,.prose li strong{color:var(--text)}.prose ul,.prose ol{color:var(--text-dim);padding-left:22px;max-width:70ch}.prose li{margin-bottom:6px}.prose a{color:var(--teal);text-decoration:underline;text-decoration-color:var(--amber-dim);text-underline-offset:3px}.prose a:hover{text-decoration-color:var(--amber)}.lead{font-size:18px;color:var(--text-dim);max-width:62ch}code:not(pre code){font-family:var(--font-mono);background:var(--bg-panel-2);border:1px solid var(--border);padding:1px 6px;border-radius:5px;color:var(--amber-soft);font-size:.88em}pre{position:relative;font-family:var(--font-mono);font-size:13.5px;line-height:1.65;background:#080a09;border:1px solid var(--border);border-radius:var(--r);padding:36px 18px 16px;overflow-x:auto;color:#c6cec9}pre:before{content:"bash";position:absolute;top:0;left:0;right:0;padding:6px 14px;font-size:11px;color:var(--text-faint);border-bottom:1px solid var(--border)}.pre-copy{position:absolute;top:3px;right:6px;font:500 11.5px var(--font-sans);color:var(--text-faint);background:transparent;border:1px solid transparent;border-radius:6px;padding:2px 8px;cursor:pointer;transition:color .15s,border-color .15s}.pre-copy:hover,.pre-copy:focus-visible{color:var(--text);border-color:var(--border-strong)}.pre-copy.copied{color:var(--amber);border-color:var(--amber-dim)}@media print{.pre-copy{display:none}}.page-toc{display:flex;flex-wrap:wrap;gap:4px 14px;align-items:center;font-family:var(--font-mono);font-size:12.5px;background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--r);padding:10px 14px;margin:18px 0 6px}.page-toc span{color:var(--text-faint)}.page-toc a{color:var(--amber-soft);text-decoration:none;border-bottom:none;display:inline-flex;align-items:center;min-height:24px}.page-toc a:hover{color:var(--amber)}pre .cmd{color:var(--text)}pre .cmt{color:var(--text-faint)}pre .out{color:#98a29c}table{width:100%;border-collapse:collapse;font-size:14px;margin:16px 0 24px}th{text-align:left;font-size:13px;font-weight:600;color:var(--text);padding:10px 12px;border-bottom:1px solid var(--border-strong)}td{padding:10px 12px;color:var(--text-dim);vertical-align:top}tbody tr:nth-child(2n) td{background:#ffffff05}td code{white-space:nowrap}tr:hover td{background:var(--bg-panel)}.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px;margin:24px 0}.card{display:block;background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--r);padding:18px 20px;text-decoration:none;transition:border-color .25s var(--ease),background .25s var(--ease),transform .25s var(--ease)}.card:hover{border-color:var(--border-strong);background:var(--bg-panel-2);transform:translateY(-2px)}.card:active{transform:scale(.99)}.card .cmd-name{font-family:var(--font-mono);font-weight:700;color:var(--amber);font-size:16px}.card p{font-size:14px;color:var(--text-dim);margin:8px 0 0;line-height:1.55}.cmd-index{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--border);border:1px solid var(--border);border-radius:var(--r);overflow:hidden}.cmd-index a{display:flex;flex-direction:column;gap:6px;padding:20px 22px;background:var(--bg);text-decoration:none;transition:background .2s var(--ease)}.cmd-index a:hover{background:var(--bg-panel)}.cmd-index .cmd{font-family:var(--font-mono);font-weight:700;font-size:17px;color:var(--amber)}.cmd-index .sum{font-size:14px;color:var(--text-dim);line-height:1.5}@media(min-width:961px){.cmd-index a:last-child:nth-child(3n+1){grid-column:span 3}.cmd-index a:last-child:nth-child(3n+2){grid-column:span 2}}@media(min-width:768px)and (max-width:960px){.cmd-index{grid-template-columns:1fr 1fr}.cmd-index a:last-child:nth-child(odd){grid-column:span 2}}@media(max-width:767px){.cmd-index{grid-template-columns:1fr}}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;white-space:nowrap;font-family:var(--font-sans);font-size:15px;font-weight:600;background:var(--amber);color:#07120b;text-decoration:none;padding:11px 20px;border-radius:var(--r);border:1px solid var(--amber);transition:background .2s var(--ease),border-color .2s var(--ease),transform .15s var(--ease)}.btn:hover{background:#63ec96}.btn:active{transform:translateY(1px)}.btn.secondary{background:transparent;color:var(--text);border-color:var(--border-strong)}.btn.secondary:hover{background:var(--bg-panel-2);border-color:var(--text-faint)}.eyebrow{font-family:var(--font-mono);font-size:12.5px;color:var(--amber-soft)}.breadcrumbs{font-size:13px;color:var(--text-faint);margin-top:24px}.breadcrumbs a{color:var(--text-dim);text-decoration:underline;text-decoration-color:var(--border-strong);text-underline-offset:3px}.breadcrumbs a:hover{color:var(--text)}.callout{background:var(--bg-panel);border:1px solid var(--border);border-left:3px solid var(--text-faint);border-radius:var(--r);padding:14px 18px;margin:20px 0;font-size:14.5px;color:var(--text-dim)}.callout.warn{border-left-color:var(--amber);color:var(--text)}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#1d2420;border-radius:5px}::-webkit-scrollbar-thumb:hover{background:var(--amber-dim)}@media(max-width:1180px){.site-header{min-height:60px;padding:10px 16px;flex-wrap:wrap}.search-btn{order:1;margin-left:auto}.nav-toggle-btn{display:flex;order:2}.site-nav{order:3;flex-basis:100%;flex-direction:column;gap:2px;max-height:0;overflow:hidden;visibility:hidden}.nav-toggle-input:checked~.site-nav{max-height:75vh;overflow-y:auto;visibility:visible;margin:8px 0 6px}.site-nav a{padding:10px 12px;font-size:15px}.site-nav a.active{background:var(--bg-panel-2)}}@media(max-width:760px){.container{padding:0 16px}.prose h1{font-size:26px}.prose h2{font-size:20px}.prose table{display:block;overflow-x:auto;white-space:normal}.card-grid{grid-template-columns:1fr}.site-footer{margin-top:72px;padding:40px 16px 28px}.site-footer .inner{grid-template-columns:1fr 1fr;gap:28px}.site-footer .f-brand{grid-column:1 / -1}.st-body{font-size:12.8px}.st-input{font-size:16px}}@media(max-width:420px){.btn{display:flex;width:100%}}@media(max-width:760px){pre{white-space:pre-wrap;overflow-wrap:break-word;padding:32px 12px 12px;font-size:12.5px;line-height:1.65}pre code{display:block;padding-left:1.4em;text-indent:-1.4em}pre:before{font-size:10px;padding:5px 12px}.sheet-toc{top:68px;padding:6px}.page-toc{font-size:11.5px;gap:3px 10px;padding:9px 11px}h2[id]{scroll-margin-top:150px}.diagram{padding:12px 8px 8px;margin:16px -4px 20px}.diagram figcaption{font-size:11.5px}.cause,.scenario,.step-card{padding:13px}.cause h3,.scenario h3,.step-card h3{font-size:15px}.sc-rows li{padding:9px 8px}.cmd-chip{padding:7px 10px}.sc-head{padding:14px 14px 11px}.st-terminal{margin:16px 0}.st-body{padding:13px 12px 6px}.st-input-row{padding:12px}.st-titlebar{padding:9px 12px}.lesson-nav{flex-direction:column-reverse;gap:8px}.nav-btn{width:100%;text-align:center;padding:12px 16px}.nav-btn.primary{margin-left:0}.learn-sidebar{position:static;max-height:none}}@media(max-width:420px){.prose h1{font-size:23px}.err-h1{font-size:.68em}.sheet-stats{font-size:11.5px}.diagram{margin-left:-8px;margin-right:-8px}}@media(hover:none){.site-nav a{padding:10px 12px}.lesson-item{padding:11px 10px}.sheet-toc a{padding:6px 12px}}
