:root{--color-bg:#fcfbf9;--color-surface:#fff;--color-surface-subtle:#f6f5f0;--color-surface-muted:#eeede7;--color-border:#e4e3dc;--color-border-strong:#c8c7be;--color-text-primary:#161719;--color-text-secondary:#474a4f;--color-text-muted:#6e7279;--color-accent:#15483f;--color-accent-hover:#0c332c;--color-accent-light:#f0f6f4;--color-accent-border:#bbded6;--font-serif:"Instrument Serif", Georgia, Cambria, "Times New Roman", serif;--font-sans:"Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono:"JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;--container-max:1160px;--space-gutter:clamp(1.25rem, 3.5vw, 2.5rem);--section-gap:clamp(3rem, 5vw, 4.5rem);--radius-xs:1px;--radius-sm:2px;--min-touch:44px}html[data-theme=dark]{--color-bg:#0d1117;--color-surface:#161b22;--color-surface-subtle:#1f242c;--color-surface-muted:#2d333b;--color-border:#30363d;--color-border-strong:#484f58;--color-text-primary:#e6edf3;--color-text-secondary:#8b949e;--color-text-muted:#6e7681;--color-accent:#2ea043;--color-accent-hover:#3fb950;--color-accent-light:#2ea04326;--color-accent-border:#2ea04359}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{font-family:var(--font-sans);color:var(--color-text-primary);background-color:var(--color-bg);scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:16px;line-height:1.55}body{flex-direction:column;min-height:100dvh;display:flex;overflow-x:hidden}.skip-link{background:var(--color-text-primary);color:#fff;z-index:1000;border-radius:var(--radius-xs);padding:.75rem 1.25rem;font-size:.85rem;font-weight:600;text-decoration:none;transition:top .15s;position:absolute;top:-100px;left:1rem}.skip-link:focus{outline:2px solid var(--color-accent);outline-offset:2px;top:1rem}a:focus-visible,button:focus-visible{outline:2px solid var(--color-accent);outline-offset:3px}.container{width:100%;max-width:var(--container-max);padding-left:var(--space-gutter);padding-right:var(--space-gutter);margin-left:auto;margin-right:auto}.border-top{border-top:1px solid var(--color-border)}.site-header{border-bottom:1px solid var(--color-border);background-color:var(--color-bg);z-index:50;position:sticky;top:0}.header-inner{justify-content:space-between;align-items:center;min-height:64px;display:flex}.brand-signature{color:inherit;min-height:var(--min-touch);align-items:center;gap:.85rem;text-decoration:none;display:flex}.brand-mark-img{object-fit:contain;flex-shrink:0;width:auto;height:32px;display:block}.brand-text-col{flex-direction:column;justify-content:center;display:flex}.brand-name{letter-spacing:-.02em;color:var(--color-text-primary);font-size:1rem;font-weight:700}.brand-sub{font-family:var(--font-mono);color:var(--color-text-muted);letter-spacing:.03em;text-transform:uppercase;font-size:.7rem}.header-actions{align-items:center;gap:1.25rem;display:flex}.site-nav{align-items:center;gap:1.5rem;display:flex}.site-nav a{color:var(--color-text-secondary);min-height:var(--min-touch);align-items:center;padding:0 .2rem;font-size:.88rem;font-weight:500;text-decoration:none;transition:color .15s;display:inline-flex;position:relative}.site-nav a:hover{color:var(--color-accent)}.btn{min-height:var(--min-touch);border-radius:var(--radius-xs);cursor:pointer;justify-content:center;align-items:center;gap:.5rem;padding:.7rem 1.45rem;font-size:.88rem;font-weight:600;text-decoration:none;transition:all .15s;display:inline-flex}.btn-primary{background-color:var(--color-accent);color:#fff;border:1px solid var(--color-accent)}.btn-primary:hover{background-color:var(--color-accent-hover);border-color:var(--color-accent-hover);transform:translateY(-1px)}.btn-primary:active{transform:translateY(0)}.btn-secondary{color:var(--color-text-primary);border:1px solid var(--color-border-strong);background-color:#0000}.btn-secondary:hover{background-color:var(--color-surface-subtle);border-color:var(--color-text-primary)}.site-footer{background-color:var(--color-bg);margin-top:auto;padding-top:2.25rem;padding-bottom:2.5rem}.footer-inner{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1.25rem;display:flex}.footer-left{flex-direction:column;gap:.15rem;display:flex}.footer-name{color:var(--color-text-primary);font-size:.92rem;font-weight:700}.footer-discipline{color:var(--color-text-muted);font-size:.8rem}.footer-copy{font-family:var(--font-mono);color:var(--color-text-muted);font-size:.75rem}@media (width<=560px){.header-inner{flex-direction:column;align-items:flex-start;gap:.65rem;padding-top:.85rem;padding-bottom:.85rem}.header-actions{justify-content:space-between;gap:.75rem;width:100%}.site-nav{flex:1;padding-bottom:.25rem;overflow-x:auto}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}