:root{--bg: #ffffff;--fg: #0b0c10;--muted: #5b6470;--border: #e5e7eb;--card: #f8fafc;--accent: #2563eb;--accent-fg: #ffffff;--code-bg: #f1f5f9;--shadow: 0 1px 2px rgba(0,0,0,.04), 0 4px 12px rgba(0,0,0,.04);--radius: 10px;--maxw: 880px}[data-theme=dark]{--bg: #0b0c10;--fg: #f1f5f9;--muted: #94a3b8;--border: #1f2937;--card: #111827;--accent: #60a5fa;--accent-fg: #0b0c10;--code-bg: #111827;--shadow: 0 1px 2px rgba(0,0,0,.4), 0 4px 12px rgba(0,0,0,.3)}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--fg);line-height:1.6;font-size:16px}a{color:var(--accent);text-decoration:none}a:hover,a:focus{text-decoration:underline}.container{max-width:var(--maxw);margin:0 auto;padding:0 1rem}.site-header{border-bottom:1px solid var(--border);position:sticky;top:0;background:var(--bg);z-index:10}.site-header .container{display:flex;align-items:center;justify-content:space-between;padding-top:.75rem;padding-bottom:.75rem;gap:1rem}.brand{font-weight:700;font-size:1.05rem;color:var(--fg)}.brand:hover{text-decoration:none}.nav{display:flex;gap:1.25rem;align-items:center}.nav a{color:var(--fg);font-weight:500;font-size:.95rem}.theme-toggle{background:transparent;border:1px solid var(--border);color:var(--fg);border-radius:999px;padding:.35rem .75rem;font-size:.85rem;cursor:pointer;display:inline-flex;align-items:center;gap:.4rem}.theme-toggle svg{color:#f59e0b}[data-theme=dark] .theme-toggle svg{color:#fbbf24}.theme-toggle:hover{background:var(--card)}main{padding:2rem 0 3rem}h1{font-size:clamp(1.6rem,2.2vw + 1rem,2.25rem);line-height:1.2;margin:0 0 .5rem}h2{font-size:1.35rem;margin:2rem 0 .75rem}h3{font-size:1.1rem;margin:1.25rem 0 .5rem}p{margin:.5rem 0 1rem;color:var(--fg)}.lead{color:var(--muted);font-size:1.05rem;margin-bottom:1.5rem}.converter{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:1.25rem;box-shadow:var(--shadow);margin-bottom:1.5rem}.fields{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.field{display:flex;flex-direction:column;gap:.35rem}.field label{font-weight:600;font-size:.9rem}.input-row{display:flex;gap:.5rem}.input-row input{flex:1;min-width:0;font:inherit;padding:.6rem .75rem;border:1px solid var(--border);border-radius:8px;background:var(--bg);color:var(--fg)}.input-row input:focus{outline:2px solid var(--accent);outline-offset:1px}.btn{background:var(--accent);color:var(--accent-fg);border:0;border-radius:8px;padding:.55rem .85rem;font:inherit;font-weight:600;cursor:pointer}.btn.secondary{background:transparent;color:var(--fg);border:1px solid var(--border)}.btn:hover{filter:brightness(1.05)}.base-row{margin-top:1rem;display:flex;gap:.75rem;align-items:end;flex-wrap:wrap}.base-row .field{flex:0 0 200px}.share{margin-top:1rem;font-size:.9rem}.share input{width:100%;padding:.5rem;border:1px solid var(--border);border-radius:8px;background:var(--bg);color:var(--fg);font-family:ui-monospace,monospace;font-size:.85rem}.toast{position:fixed;bottom:1.5rem;left:50%;transform:translate(-50%);background:var(--fg);color:var(--bg);padding:.5rem 1rem;border-radius:999px;font-size:.9rem;opacity:0;pointer-events:none;transition:opacity .2s}.toast.show{opacity:1}table.quick{width:100%;border-collapse:collapse;margin:.5rem 0 1.5rem}table.quick th,table.quick td{text-align:left;padding:.5rem .75rem;border-bottom:1px solid var(--border);font-variant-numeric:tabular-nums}table.quick th{font-size:.85rem;color:var(--muted);font-weight:600}code{background:var(--code-bg);padding:.1rem .35rem;border-radius:4px;font-size:.9em}pre{background:var(--code-bg);padding:1rem;border-radius:8px;overflow-x:auto;font-size:.9rem}.post-list{list-style:none;padding:0;margin:1.5rem 0;display:grid;gap:1rem}.post-list li{border:1px solid var(--border);border-radius:var(--radius);padding:1rem 1.25rem;background:var(--card)}.post-list h2{margin:0 0 .35rem;font-size:1.15rem}.post-list p{color:var(--muted);margin:0;font-size:.95rem}.ad-slot{margin:2rem 0;border:1px dashed var(--border);background:var(--card);border-radius:var(--radius);padding:2rem 1rem;text-align:center;color:var(--muted);font-size:.85rem}details{border:1px solid var(--border);border-radius:8px;padding:.75rem 1rem;margin-bottom:.5rem;background:var(--card)}details summary{cursor:pointer;font-weight:600}details[open] summary{margin-bottom:.5rem}.site-footer{border-top:1px solid var(--border);padding:1.5rem 0;margin-top:3rem;color:var(--muted);font-size:.9rem}.site-footer .container{display:flex;flex-wrap:wrap;gap:1rem;justify-content:space-between;align-items:center}.site-footer .popular{display:flex;flex-wrap:wrap;gap:.75rem}.site-footer .popular a{color:var(--muted)}@media(max-width:560px){.fields{grid-template-columns:1fr}.nav{gap:.75rem}.nav a{font-size:.9rem}}