:root{--bg:#0a0e14;--bg-surface:#111720;--bg-elevated:#18202e;--border:#1e2a3a;--border-light:#243347;--text-primary:#e8edf5;--text-secondary:#7a8fa8;--text-muted:#4a5d72;--accent:#3b82c4;--accent-dim:#3b82c426;--accent-glow:#3b82c414;--positive:#2ecc8a;--negative:#e05252;--warning:#d4a843;--font-sans:"DM Sans",sans-serif;--font-mono:"DM Mono",monospace}*{box-sizing:border-box;margin:0;padding:0}html{background:var(--bg);color:var(--text-primary);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;scroll-behavior:smooth;font-size:15px}body{background:var(--bg);background-image:radial-gradient(80% 40% at 50% -10%,#3b82c40f 0%,#0000 60%);min-height:100vh}::selection{background:var(--accent-dim);color:var(--text-primary)}input[type=number]::-webkit-inner-spin-button{-webkit-appearance:none}input[type=number]::-webkit-outer-spin-button{-webkit-appearance:none}input[type=range]{appearance:none;background:var(--border);border-radius:1px;outline:none;width:100%;height:2px}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;background:var(--accent);cursor:pointer;border:2px solid var(--bg);width:14px;height:14px;box-shadow:0 0 0 1px var(--accent);border-radius:50%}.calc-link{background:var(--bg-surface);grid-template-columns:60px 1fr auto;align-items:center;gap:1.5rem;padding:1.75rem 2rem;text-decoration:none;transition:background .15s;display:grid}.calc-link:hover{background:var(--bg-elevated)}