:root{color-scheme:light;--font-family-sans:Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-size-xs:.75rem;--font-size-sm:.875rem;--font-size-md:1rem;--font-size-lg:1.125rem;--font-size-xl:1.5rem;--font-size-2xl:2rem;--line-height-tight:1.25;--line-height-normal:1.5;--color-brand-900:#12324a;--color-brand-700:#1d587d;--color-brand-500:#287da8;--color-page:#fff;--color-surface:#fff;--color-surface-muted:#f4f6f8;--color-surface-emphasis:#e8eef2;--color-border:#d6dee5;--color-border-strong:#aebdca;--color-text:#17232d;--color-text-muted:#5d6d79;--color-text-on-brand:#fff;--color-success:#147a52;--color-success-surface:#e8f5ef;--color-warning:#a15c00;--color-warning-surface:#fff4df;--color-danger:#b42318;--color-danger-surface:#fef0ee;--color-info:#1769aa;--color-focus:#1769aa;--color-diesel:#586474;--color-gasoline-95:#c87500;--color-gasoline-98:#a33d5c;--space-1:.25rem;--space-2:.5rem;--space-3:.75rem;--space-4:1rem;--space-5:1.25rem;--space-6:1.5rem;--space-8:2rem;--space-10:2.5rem;--space-12:3rem;--radius-sm:.375rem;--radius-md:.625rem;--radius-lg:1rem;--radius-pill:999px;--shadow-sm:0 1px 2px #12324a14;--shadow-md:0 4px 14px #12324a1f;--shadow-lg:0 12px 32px #12324a29;--focus-ring:0 0 0 3px #1769aa47;--transition-fast:.12s ease;--transition-normal:.2s ease}:root[data-theme=dark],html[data-theme=dark]{color-scheme:dark;--color-brand-900:#b8d8e9;--color-brand-700:#78b8d6;--color-brand-500:#55a6ce;--color-page:#151a1f;--color-surface:#1e252b;--color-surface-muted:#252e35;--color-surface-emphasis:#303b44;--color-border:#46535d;--color-border-strong:#667681;--color-text:#f1f5f7;--color-text-muted:#b9c6ce;--color-text-on-brand:#10212c;--color-success:#63d09e;--color-success-surface:#18392c;--color-warning:#f4b85e;--color-warning-surface:#44341e;--color-danger:#ff8f85;--color-danger-surface:#482523;--color-info:#82c8ed;--color-focus:#82c8ed;--color-diesel:#aebcca;--color-gasoline-95:#f0b04e;--color-gasoline-98:#e58aa5;--shadow-sm:0 1px 2px #0000003d;--shadow-md:0 4px 14px #00000052;--shadow-lg:0 12px 32px #0006;--focus-ring:0 0 0 3px #82c8ed57}@media (prefers-color-scheme:dark){:root:not([data-theme=light]),html:not([data-theme=light]){color-scheme:dark;--color-brand-900:#b8d8e9;--color-brand-700:#78b8d6;--color-brand-500:#55a6ce;--color-page:#151a1f;--color-surface:#1e252b;--color-surface-muted:#252e35;--color-surface-emphasis:#303b44;--color-border:#46535d;--color-border-strong:#667681;--color-text:#f1f5f7;--color-text-muted:#b9c6ce;--color-text-on-brand:#10212c;--color-success:#63d09e;--color-success-surface:#18392c;--color-warning:#f4b85e;--color-warning-surface:#44341e;--color-danger:#ff8f85;--color-danger-surface:#482523;--color-info:#82c8ed;--color-focus:#82c8ed;--color-diesel:#aebcca;--color-gasoline-95:#f0b04e;--color-gasoline-98:#e58aa5;--shadow-sm:0 1px 2px #0000003d;--shadow-md:0 4px 14px #00000052;--shadow-lg:0 12px 32px #0006;--focus-ring:0 0 0 3px #82c8ed57}}html{font-family:var(--font-family-sans);font-size:16px;line-height:var(--line-height-normal);color:var(--color-text);background:var(--color-page)}*,:before,:after{box-sizing:border-box}body{background:var(--color-page);min-width:20rem;color:var(--color-text);margin:0}.app-shell{width:100%;min-height:100vh}.site-header{align-items:center;gap:var(--space-6);max-width:80rem;padding:var(--space-4) var(--space-6);justify-content:space-between;width:100%;margin:0 auto;display:flex}.site-header__brand{color:var(--color-brand-900);font-size:var(--font-size-lg);align-items:center;gap:var(--space-2);font-weight:700;line-height:var(--line-height-tight);text-decoration:none;display:inline-flex}.site-header__brand-mark{font-size:var(--font-size-xl);line-height:1}.site-header__nav{align-items:center;gap:var(--space-2);margin-left:auto;display:flex}.site-header__nav a{border-radius:var(--radius-md);color:var(--color-text-muted);font-size:var(--font-size-sm);min-height:2.5rem;padding:var(--space-2) var(--space-3);transition:background var(--transition-fast), color var(--transition-fast);align-items:center;font-weight:600;text-decoration:none;display:inline-flex}.site-header__nav a:hover{background:var(--color-surface-muted);color:var(--color-text)}.site-header__nav a.active{background:var(--color-surface-emphasis);color:var(--color-brand-900)}.site-header__nav a:focus-visible,.site-header__brand:focus-visible{box-shadow:var(--focus-ring);outline:none}.site-header__actions{flex-shrink:0;display:flex}@media (width<=40rem){.site-header{gap:var(--space-3);padding:var(--space-3) var(--space-4);flex-wrap:wrap}.site-header__brand span:last-child{font-size:var(--font-size-md)}.site-header__nav{border-top:1px solid var(--color-border);padding-top:var(--space-2);flex:1 0 100%;order:3;gap:0;margin-left:0}.site-header__nav a{padding-inline:var(--space-2);flex:1;justify-content:center}.theme-toggle{padding-inline:var(--space-3)}}.theme-toggle{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-pill);color:var(--color-text);cursor:pointer;font:inherit;font-size:var(--font-size-sm);align-items:center;gap:var(--space-2);min-height:2.5rem;padding:var(--space-2) var(--space-4);transition:background var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast), color var(--transition-fast);font-weight:600;display:inline-flex}.theme-toggle:hover{background:var(--color-surface-muted);border-color:var(--color-border-strong)}.theme-toggle:focus-visible{box-shadow:var(--focus-ring);outline:none}.theme-toggle span:first-child{font-size:var(--font-size-lg);line-height:1}