.site-header{justify-content:space-between;align-items:center;gap:16px;max-width:880px;margin:0 auto;padding:clamp(14px,3vw,22px) clamp(16px,4vw,32px);display:flex}.site-brand{letter-spacing:-.01em;color:var(--text);align-items:center;gap:10px;font-weight:650;text-decoration:none;display:inline-flex}.site-brand svg{flex-shrink:0;width:30px;height:30px}.site-nav{flex-wrap:wrap;align-items:center;gap:4px 14px;display:flex}.site-nav a{color:var(--text-2);border-bottom:2px solid #0000;padding:6px 2px;font-size:14px;text-decoration:none}.site-nav a:hover{color:var(--accent-ink)}.site-nav a[aria-current=page]{color:var(--accent-ink);border-bottom-color:var(--accent)}.theme-toggle{border:1px solid var(--border);background:var(--surface);width:40px;height:40px;color:var(--text-2);cursor:pointer;border-radius:999px;place-items:center;display:grid}.site-main{max-width:720px;margin:0 auto;padding:clamp(16px,4vw,32px) clamp(16px,4vw,32px) 64px}.prose h1{letter-spacing:-.02em;margin:0 0 8px;font-size:clamp(26px,4vw,34px);font-weight:700;line-height:1.2}.prose .lead{color:var(--text-2);margin:0 0 28px;font-size:17px}.prose h2{letter-spacing:-.01em;margin:34px 0 10px;font-size:21px;font-weight:650}.prose h3{margin:22px 0 8px;font-size:17px;font-weight:650}.prose p,.prose li{color:var(--text);font-size:16px;line-height:1.7}.prose a{color:var(--accent-ink);text-underline-offset:2px;text-decoration:underline}.prose ul,.prose ol{padding-inline-start:22px}.prose li{margin:4px 0}.prose table{border-collapse:collapse;width:100%;margin:16px 0;font-size:15px}.prose th,.prose td{text-align:start;border-bottom:1px solid var(--border);padding:8px 10px}.prose th{color:var(--text-2);font-weight:650}.owner-note{border:1px dashed var(--border-strong);border-radius:var(--radius-content);background:var(--surface-2);color:var(--text-2);margin:18px 0;padding:12px 14px;font-size:14px}.site-links{max-width:980px;padding:32px clamp(16px, 4vw, 40px) calc(40px + env(safe-area-inset-bottom));border-top:1px solid var(--border);grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:20px 32px;margin:0 auto;display:grid}.site-links-group{flex-direction:column;gap:7px;display:flex}.site-links-group h2{letter-spacing:.1em;text-transform:uppercase;color:var(--text-3);margin:0 0 4px;font-size:12px;font-weight:700}.site-links-group a{color:var(--text-2);font-size:14px;text-decoration:none}.site-links-group a:hover{color:var(--accent-ink)}.site-footer{border-top:1px solid var(--border);background:var(--surface-2)}.site-footer-inner{max-width:880px;color:var(--text-2);flex-wrap:wrap;align-items:center;gap:8px 18px;margin:0 auto;padding:24px clamp(16px,4vw,32px);font-size:13.5px;display:flex}.site-footer-inner a{color:var(--text-2);text-decoration:none}.site-footer-inner a:hover{color:var(--accent-ink)}.site-footer-sep{color:var(--text-3)}.back-to-converter{color:var(--accent-ink);align-items:center;gap:6px;margin-top:8px;font-weight:600;text-decoration:none;display:inline-flex}.tool{flex-direction:column;gap:18px;margin-top:8px;display:flex}.tool-field{border:1px solid var(--border);border-radius:var(--radius-content);margin:0;padding:14px 16px}.tool-field legend,.tool-legend{letter-spacing:.08em;text-transform:uppercase;color:var(--accent-ink);padding:0 6px;font-size:12px;font-weight:700}.tool-cal{gap:16px;margin-bottom:12px;font-size:14px;display:flex}.tool-cal label{cursor:pointer;align-items:center;gap:6px;display:inline-flex}.tool-row{grid-template-columns:72px 1fr 96px;gap:10px;display:grid}.tool-row label,.tool-amount,.tool-unit{letter-spacing:.04em;text-transform:uppercase;color:var(--text-2);flex-direction:column;gap:5px;font-size:11.5px;font-weight:600;display:flex}.tool-row input,.tool-row select,.tool-amount input,.tool-unit select,.tool-textarea{border:1px solid var(--border);background:var(--surface-2);height:46px;font:inherit;color:var(--text);font-variant-numeric:tabular-nums;border-radius:12px;padding:0 12px;font-size:16px}.tool-textarea{resize:vertical;width:100%;height:auto;padding:12px;line-height:1.6}.tool-controls{flex-wrap:wrap;align-items:flex-end;gap:12px;display:flex}.tool-seg{border:1px solid var(--border);border-radius:11px;display:inline-flex;overflow:hidden}.tool-seg button{background:var(--surface);color:var(--text-2);cursor:pointer;border:none;padding:11px 16px;font-weight:600}.tool-seg button.on{background:var(--btn-bg);color:var(--btn-text)}.tool-result{border:1px solid var(--border);border-radius:var(--radius-content);background:var(--surface-2);padding:16px}.tool-big{letter-spacing:-.01em;margin:0;font-size:clamp(20px,3vw,26px);font-weight:700}.tool-sub{color:var(--text-2);margin:4px 0 0}.tool-hint{color:var(--text-3)}.tool-error{color:var(--danger);margin:6px 0 0;font-size:14px}.tool-table{border-collapse:collapse;width:100%;font-size:14px}.tool-table th,.tool-table td{text-align:start;border-bottom:1px solid var(--border);padding:8px 10px}.tool-row-bad td{color:var(--danger)}.tool-copy{background:var(--btn-bg);color:var(--btn-text);cursor:pointer;border:none;border-radius:11px;align-self:flex-start;margin-top:12px;padding:9px 16px;font-weight:600}@media (width<=420px){.tool-row{grid-template-columns:64px 1fr 80px;gap:8px}}