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a.active{color:var(--red-light)}.nav-cta{background:var(--red);border-radius:var(--radius);color:#fff!important;padding:8px 18px!important;font-size:13px!important;font-weight:600!important;transition:all .2s!important}.nav-cta:hover{box-shadow:var(--shadow-red);background:var(--red-dark)!important}.nav-right{align-items:center;gap:10px;margin-left:auto;display:flex}.nav-user-chip{border:1px solid var(--border-light);background:var(--bg-card);color:var(--text-secondary);white-space:nowrap;border-radius:24px;align-items:center;gap:8px;padding:5px 12px 5px 6px;font-size:13px;font-weight:500;text-decoration:none;transition:all 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img{width:auto;height:36px}.nav-links{gap:var(--s-1)}.nav-links a{min-block-size:44px;padding-inline:var(--s-3);border-radius:var(--r-sm);font-size:var(--t-base);color:var(--ink-body);transition:color var(--dur-1) var(--ease), background-color var(--dur-1) var(--ease);align-items:center;font-weight:500;display:inline-flex;position:relative}.nav-links a:hover{color:var(--ink-readout);background:var(--surface-panel)}.nav-links a.active{color:var(--ink-readout);background:0 0}.nav-links a.active:after{content:"";inset-inline:var(--s-3);background:var(--ink-readout);border-radius:1px;block-size:2px;position:absolute;inset-block-end:-1px}.nav-right{gap:var(--s-2)}.nav-search{align-items:center;gap:var(--s-2);min-block-size:40px;padding-inline:var(--s-3) var(--s-2);border:1px solid var(--edge-control);border-radius:var(--r-md);background:var(--surface-trench);color:var(--ink-dim);font-size:var(--t-sm);white-space:nowrap;transition:color var(--dur-1) var(--ease), border-color var(--dur-1) var(--ease), background-color var(--dur-1) var(--ease);flex:none;text-decoration:none;display:inline-flex}.nav-search svg{flex:none}.nav-search kbd{min-inline-size:1.25rem;padding-block:3px;padding-inline:var(--s-1);border:1px solid var(--edge);border-radius:var(--r-xs);background:var(--surface-panel-hi);color:var(--ink-body);font-family:var(--font-mono);font-size:var(--t-2xs);border-block-end-width:2px;justify-content:center;align-items:center;line-height:1;display:inline-flex}.nav-search:hover,.nav-search:focus-visible{color:var(--ink-readout);border-color:var(--ink-readout);background:var(--surface-panel)}.nav-search:hover kbd,.nav-search:focus-visible kbd{color:var(--ink-readout);border-color:var(--edge-control)}.nav-search:focus-visible{border-radius:var(--r-md)}@media (width<=1024px){.nav-search{justify-content:center;gap:0;inline-size:40px;padding-inline:0}.nav-search span,.nav-search kbd{display:none}}.nav-hamburger{border-radius:var(--r-sm);border:1px solid var(--edge-control);background:0 0;block-size:44px;inline-size:44px}.nav-hamburger span{background:var(--ink-body)}.nav-hamburger:hover{border-color:var(--ink-readout)}.nav-drawer{background:var(--surface-rack);border-block-end:1px solid var(--edge-hair)}.nav-drawer a{min-block-size:48px;font-size:var(--t-md);color:var(--ink-body);border-radius:var(--r-sm)}.nav-drawer a.active{color:var(--ink-readout);background:var(--surface-panel)}.btn{min-block-size:40px;padding:var(--s-2) var(--s-5);border-radius:var(--r-md);font-family:var(--font-sans);font-size:var(--t-base);letter-spacing:var(--tr-tight);transition:background-color var(--dur-1) var(--ease), border-color var(--dur-1) var(--ease), color var(--dur-1) var(--ease), transform var(--dur-1) var(--ease);border:1px solid #0000;font-weight:600}.btn-lg{min-block-size:48px;padding:var(--s-3) var(--s-8);font-size:var(--t-md)}.btn-primary{background:var(--accent);border-color:var(--accent);color:var(--on-accent);box-shadow:var(--shadow-1)}.btn-primary:hover{background:var(--accent-deep);border-color:var(--accent-deep);color:var(--on-accent);box-shadow:var(--shadow-2);transform:translateY(-1px)}.btn-primary:active{box-shadow:none;transform:none}.btn-outline{border-color:var(--edge-control);color:var(--ink-body);background:0 0}.btn-outline:hover{background:var(--surface-panel);border-color:var(--ink-readout);color:var(--ink-readout)}.eyebrow,.section-header .eyebrow,.page-header .eyebrow{align-items:center;gap:var(--s-3);font-family:var(--font-mono);font-size:var(--t-xs);letter-spacing:var(--tr-label);text-transform:uppercase;color:var(--ink-dim);margin-block-end:var(--s-4);font-weight:600;display:flex}.eyebrow:before{content:"";background:var(--accent);flex:none;block-size:.9em;inline-size:2px}.eyebrow:after{content:"";block-size:1px;min-inline-size:var(--s-6);background:var(--edge-hair);flex:auto}.section-header{margin-block-end:var(--s-12)}.section-header h2{font-size:var(--t-3xl);letter-spacing:var(--tr-tight);margin-block-end:var(--s-3);font-weight:700}.section-header p{color:var(--ink-body);font-size:var(--t-md);line-height:var(--lh-prose);max-width:56ch}.page-header{background:var(--surface-rack);border-block-end:1px solid var(--edge-hair);padding-block:var(--s-12) var(--s-10)}.page-header:before{content:none}.page-header h1{font-size:var(--t-4xl);margin-block-end:var(--s-4)}.page-header p{color:var(--ink-body);font-size:var(--t-lg);line-height:var(--lh-prose);max-width:62ch}.breadcrumb{font-family:var(--font-mono);font-size:var(--t-xs);color:var(--ink-dim);margin-block-end:var(--s-5)}.breadcrumb a{color:var(--ink-body)}.breadcrumb a:hover{color:var(--ink-readout)}.breadcrumb span{opacity:1;color:var(--ink-dim)}.card{--card-pad:var(--s-6);background:var(--surface-panel);border:1px solid var(--edge-hair);border-radius:var(--r-lg);padding:var(--card-pad);transition:background-color var(--dur-2) var(--ease), border-color var(--dur-2) var(--ease), transform var(--dur-2) var(--ease), box-shadow var(--dur-2) var(--ease)}.card:hover{background:var(--surface-panel-hi);border-color:var(--edge-control);box-shadow:var(--shadow-2);transform:translateY(-2px)}.card:not(.lab-card):before{background:var(--ink-readout);opacity:0;block-size:1px;transition:opacity var(--dur-2) var(--ease);inset-block-start:0;inset-inline:0}.card:not(.lab-card):hover:before{opacity:1}.card h3{font-size:var(--t-lg);letter-spacing:var(--tr-tight);margin-block-end:var(--s-2);font-weight:600}.card p{color:var(--ink-body);font-size:var(--t-sm);line-height:var(--lh-ui)}.lab-card{--card-pad:var(--s-5);background:var(--surface-panel);border:1px solid var(--edge-hair);border-radius:var(--r-lg)}.lab-card:hover{border-color:var(--edge-control);box-shadow:var(--shadow-2);transform:translateY(-2px)}.lab-card:before{content:none}.lab-card-title{font-size:var(--t-md);letter-spacing:var(--tr-tight);font-weight:600}.lab-card-desc{color:var(--ink-body);font-size:var(--t-sm);line-height:var(--lh-ui)}.lab-card-meta{font-family:var(--font-mono);font-size:var(--t-xs);color:var(--ink-dim)}.badge{gap:var(--s-2);padding:3px var(--s-2);border-radius:var(--r-sm);font-family:var(--font-mono);font-size:var(--t-2xs);letter-spacing:.08em;border:1px solid #0000;font-weight:600;line-height:1.45}.badge-red{background:color-mix(in srgb, var(--sig-crit) 16%, var(--surface-panel));color:var(--sig-crit);border-color:color-mix(in srgb, var(--sig-crit) 34%, transparent)}.badge-green{background:color-mix(in srgb, var(--sig-ok) 16%, var(--surface-panel));color:var(--sig-ok);border-color:color-mix(in srgb, var(--sig-ok) 34%, transparent)}.badge-yellow{background:color-mix(in srgb, var(--sig-warn) 16%, var(--surface-panel));color:var(--sig-warn);border-color:color-mix(in srgb, var(--sig-warn) 34%, transparent)}.badge-blue{background:color-mix(in srgb, var(--sig-info) 16%, var(--surface-panel));color:var(--sig-info);border-color:color-mix(in srgb, var(--sig-info) 34%, transparent)}.badge-purple{background:color-mix(in srgb, var(--sig-alt) 16%, var(--surface-panel));color:var(--sig-alt);border-color:color-mix(in srgb, var(--sig-alt) 34%, transparent)}.badge-orange{background:color-mix(in srgb, var(--sig-note) 16%, var(--surface-panel));color:var(--sig-note);border-color:color-mix(in srgb, var(--sig-note) 34%, transparent)}.badge-gray{background:var(--surface-trench);color:var(--ink-body);border-color:var(--edge)}.diff-easy{background:color-mix(in srgb, var(--sig-ok) 16%, var(--surface-panel));color:var(--sig-ok);border-color:color-mix(in srgb, var(--sig-ok) 34%, transparent)}.diff-medium{background:color-mix(in srgb, var(--sig-warn) 16%, var(--surface-panel));color:var(--sig-warn);border-color:color-mix(in srgb, var(--sig-warn) 34%, transparent)}.diff-hard{background:color-mix(in srgb, var(--sig-crit) 16%, var(--surface-panel));color:var(--sig-crit);border-color:color-mix(in srgb, var(--sig-crit) 34%, transparent)}.diff-easy{--gauge-1:var(--sig-ok);--gauge-2:var(--edge-control);--gauge-3:var(--edge-control)}.diff-medium{--gauge-1:var(--sig-warn);--gauge-2:var(--sig-warn);--gauge-3:var(--edge-control)}.diff-hard{--gauge-1:var(--sig-crit);--gauge-2:var(--sig-crit);--gauge-3:var(--sig-crit)}.badge[class*=diff-]:before{content:"";background:linear-gradient(to right, var(--gauge-1) 0 5px, transparent 5px 7px, var(--gauge-2) 7px 12px, transparent 12px 14px, var(--gauge-3) 14px 19px);border-radius:1px;flex:none;block-size:3px;inline-size:19px}[dir=rtl] .badge[class*=diff-]:before{transform:scaleX(-1)}@media (forced-colors:active){.badge[class*=diff-]:before{display:none}}.tag{border-radius:var(--r-sm);font-family:var(--font-mono);font-size:var(--t-2xs);color:var(--ink-dim);border-color:var(--edge-hair)}.tag:hover{color:var(--ink-readout);border-color:var(--edge-control);background:var(--surface-panel-hi)}.hero{min-height:auto;padding-block:var(--s-20) var(--s-16)}.hero .hero-bg,.hero .hero-grid-bg{display:none}.hero-inner{gap:var(--s-12);grid-template-columns:1.05fr .95fr}.hero-badge{background:var(--surface-panel);border:1px solid var(--edge-hair);border-radius:var(--r-sm);color:var(--ink-body);font-family:var(--font-mono);font-size:var(--t-xs);letter-spacing:var(--tr-label);padding:var(--s-2) var(--s-3)}.hero-badge span{background:var(--sig-ok);border-radius:var(--r-pill);block-size:6px;inline-size:6px;animation:none}.hero h1{font-family:var(--font-sans);font-size:clamp(2.2rem,1.7775rem + 1.8028vw,3.4rem);font-weight:800;line-height:var(--lh-tight);letter-spacing:var(--tr-display);text-wrap:initial;margin-block-end:var(--s-5)}.hero h1 em{color:var(--accent-ink)}.hero p{color:var(--ink-body);font-size:var(--t-lg);line-height:var(--lh-prose);max-width:52ch;margin-block-end:var(--s-8)}.hero-stats{border-block-start:1px solid var(--edge-hair);gap:var(--s-10)}.hero-stat .num,.stat-num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:var(--tr-display);color:var(--ink-readout);font-weight:700}.hero-stat .num span,.stat-num span{color:var(--accent-ink)}.hero-stat .label,.stat-label{font-family:var(--font-mono);font-size:var(--t-2xs);letter-spacing:var(--tr-label);color:var(--ink-dim)}.terminal-window{background:var(--surface-trench);border:1px solid var(--edge);border-radius:var(--r-lg);box-shadow:var(--shadow-3)}.terminal-bar{background:var(--surface-panel);border-block-end:1px solid var(--edge-hair);padding:var(--s-3) var(--s-4)}.terminal-dot{background:var(--edge-control);block-size:9px;inline-size:9px}.terminal-dot.red,.terminal-dot.yellow,.terminal-dot.green{background:var(--edge-control)}.terminal-title{font-family:var(--font-mono);font-size:var(--t-xs);letter-spacing:var(--tr-label);color:var(--ink-dim)}.terminal-body{font-family:var(--font-mono);font-size:var(--t-sm);color:var(--ink-body);padding:var(--s-5) var(--s-6);white-space:pre;tab-size:4;line-height:1.75;overflow-x:auto}.t-prompt,.t-red{color:var(--accent-ink)}.t-path{color:var(--sig-info)}.t-cmd{color:var(--ink-readout)}.t-out{color:var(--ink-body)}.t-success{color:var(--sig-ok)}.t-warn{color:var(--sig-warn)}.cursor{background:var(--accent-ink)}.stats-bar{background:var(--surface-rack);border-block:1px solid var(--edge-hair);padding-block:var(--s-8)}.stat-num{font-size:clamp(1.75rem,1.2rem + 1.6vw,2.25rem)}.prose{max-width:var(--measure);color:var(--ink-body);font-size:var(--t-md);line-height:var(--lh-prose)}.prose h2{font-size:var(--t-2xl);margin-block:var(--s-12) var(--s-4);border-block-end:1px solid var(--edge-hair);scroll-margin-top:calc(var(--nav-h) + var(--s-6));padding-block-end:var(--s-3);font-weight:600}.prose h3{font-size:var(--t-xl);margin-block:var(--s-8) var(--s-3);scroll-margin-top:calc(var(--nav-h) + var(--s-6));font-weight:600}.prose h4{font-size:var(--t-md);color:var(--ink-readout);margin-block:var(--s-6) var(--s-2);font-weight:600}.prose p{color:var(--ink-body);line-height:var(--lh-prose);margin-block-end:var(--s-4)}.prose ul,.prose ol{color:var(--ink-body);margin-block-end:var(--s-4)}.prose li{line-height:var(--lh-prose);margin-block-end:var(--s-2)}.prose li::marker{color:var(--edge-control)}.prose hr{border-block-start:1px solid var(--edge-hair);margin-block:var(--s-10)}.prose .step-num,.step-num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;background:var(--accent);color:var(--on-accent)}.step{background:var(--surface-panel);border:1px solid var(--edge-hair);border-radius:var(--r-lg);padding:var(--s-5);gap:var(--s-4)}.step-content{min-width:0}.objectives{background:var(--surface-panel);border:1px solid var(--edge-hair);border-inline-start:3px solid var(--accent);border-radius:var(--r-lg);padding:var(--s-5) var(--s-6)}.objectives .objectives-title,.prose .step-title{font-size:var(--t-md);color:var(--ink-readout);margin-block:var(--s-6) var(--s-2);font-weight:600}.objectives .objectives-title{letter-spacing:var(--tr-label)}.objectives li{color:var(--ink-body);font-size:var(--t-base)}.objectives li:before{color:var(--accent-ink)}code{background:var(--surface-trench);border:1px solid var(--edge-hair);border-radius:var(--r-xs);color:var(--ink-readout);font-family:var(--font-mono);padding:.1em .35em;font-size:.875em}pre,.code-block{color:var(--ink-body);font-family:var(--font-mono);font-size:var(--t-sm);tab-size:4;border:1px solid var(--edge-hair);border-radius:var(--r-md);padding:var(--s-4) var(--s-5);margin-block:var(--s-5);overscroll-behavior-x:contain;background-color:var(--surface-trench);background-image:linear-gradient(to right, var(--surface-trench) 30%, #11141c00), linear-gradient(to left, var(--surface-trench) 30%, #11141c00), radial-gradient(farthest-side at 0 50%, #00000080, #0000), radial-gradient(farthest-side at 100% 50%, #00000080, #0000);background-position:0 0,100% 0,0 0,100% 0;background-repeat:no-repeat;background-size:44px 100%,44px 100%,14px 100%,14px 100%;background-attachment:local,local,scroll,scroll;max-width:100%;line-height:1.7;overflow-x:auto}pre code{color:inherit;font-size:inherit;background:0 0;border:0;padding:0}.code-header{background:var(--surface-panel);border:1px solid var(--edge-hair);border-radius:var(--r-md) var(--r-md) 0 0;font-family:var(--font-mono);font-size:var(--t-xs);letter-spacing:var(--tr-label);text-transform:uppercase;color:var(--ink-dim);padding:var(--s-2) var(--s-4);border-block-end:none}.code-header+pre{border-radius:0 0 var(--r-md) var(--r-md)}.code-block-wrap{--sk-background:transparent;--sk-foreground:var(--ink-body);--sk-token-comment:#3fb950;--sk-token-keyword:#ff7b8a;--sk-token-string:#9ecbff;--sk-token-string-expression:#79d4c4;--sk-token-function:#c9a7ff;--sk-token-constant:#e3a552;--sk-token-parameter:#d6dde7;--sk-token-punctuation:#9aa6b8;margin-block:var(--s-5);min-width:0;max-width:100%;position:relative}.code-block-wrap>pre{margin-block:0}.code-block-wrap .tok-comment{color:var(--sk-token-comment)}.code-header+.code-block-wrap>pre{border-radius:0 0 var(--r-md) var(--r-md)}.code-copy{top:var(--s-2);right:var(--s-2);z-index:1;block-size:30px;inline-size:30px;color:var(--ink-dim);background:var(--surface-panel);border:1px solid var(--edge-hair);border-radius:var(--r-sm);cursor:pointer;justify-content:center;align-items:center;padding:0;transition:color .12s,border-color .12s;display:inline-flex;position:absolute}.code-block-wrap:hover .code-copy,.code-copy:focus-visible{color:var(--ink-readout)}.code-copy:hover{color:var(--ink-readout);border-color:var(--edge-control)}.code-copy:focus-visible{outline:var(--focus-width) solid var(--focus);outline-offset:var(--focus-offset)}.code-copy .ico-copy{display:block}.code-copy .ico-done{display:none}.code-block-wrap[data-copied] .code-copy{color:var(--sig-ok);border-color:var(--sig-ok)}.code-block-wrap[data-copied] .code-copy .ico-copy{display:none}.code-block-wrap[data-copied] .code-copy .ico-done{display:block}.code-copy:after{content:"Copied";right:calc(100% + var(--s-2));font-family:var(--font-mono);font-size:var(--t-2xs);letter-spacing:var(--tr-label);text-transform:uppercase;color:var(--sig-ok);white-space:nowrap;opacity:0;pointer-events:none;transition:opacity .12s;position:absolute}.code-block-wrap[data-copied] .code-copy:after{opacity:1}@media (prefers-reduced-motion:reduce){.code-copy,.code-copy:after{transition:none}}.alert{border-radius:var(--r-md);padding:var(--s-4) var(--s-5);font-size:var(--t-base);line-height:var(--lh-prose);gap:var(--s-3)}.alert-info{background:color-mix(in srgb, var(--sig-info) 9%, var(--surface-panel));border-color:var(--sig-info);color:var(--sig-info)}.alert-warn{background:color-mix(in srgb, var(--sig-warn) 9%, var(--surface-panel));border-color:var(--sig-warn);color:var(--sig-warn)}.alert-danger{background:color-mix(in srgb, var(--sig-crit) 9%, var(--surface-panel));border-color:var(--sig-crit);color:var(--sig-crit)}.alert-success{background:color-mix(in srgb, var(--sig-ok) 9%, var(--surface-panel));border-color:var(--sig-ok);color:var(--sig-ok)}.alert strong{color:inherit}.alert code{color:inherit;background:#00000040;border-color:currentColor}.table-wrap{border:1px solid 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