:root{--bg: #ffffff;--fg: #1a1d21;--muted: #5b6470;--line: #e3e7ec;--accent: #0b6b5e;--accent-weak: #eef6f4;--warn-bg: #fff8e6;--warn-line: #e8c477;--error: #b3261e;--radius: 10px;--wrap: 860px}@media(prefers-color-scheme:dark){:root{--bg: #14171a;--fg: #e8ebee;--muted: #a3adba;--line: #2b3138;--accent: #58c9b6;--accent-weak: #17282a;--warn-bg: #2e2718;--warn-line: #6b5a2e;--error: #ff8a80}}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--fg);font-family:system-ui,-apple-system,Hiragino Sans,Noto Sans JP,Yu Gothic,sans-serif;line-height:1.75;font-size:16px}.wrap{max-width:var(--wrap);margin:0 auto;padding:0 16px}a{color:var(--accent)}.skip{position:absolute;left:-9999px}.skip:focus{left:8px;top:8px;background:var(--bg);padding:8px 12px;z-index:10}.site-header{border-bottom:1px solid var(--line)}.site-header .wrap{display:flex;flex-wrap:wrap;gap:8px 20px;align-items:center;justify-content:space-between;padding-block:12px}.brand{font-weight:700;text-decoration:none;color:var(--fg)}.site-header nav{display:flex;gap:16px;font-size:.92rem}.breadcrumbs{font-size:.82rem;color:var(--muted);padding-block:10px 0}.breadcrumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px;margin:0;padding:0}.breadcrumbs li+li:before{content:"›";margin-right:6px;color:var(--line)}main{padding-block:8px 48px}.site-footer{border-top:1px solid var(--line);padding-block:24px 40px;font-size:.85rem;color:var(--muted)}.site-footer nav{display:flex;flex-wrap:wrap;gap:16px;margin:12px 0}.disclaimer{background:var(--accent-weak);border-radius:var(--radius);padding:12px 14px;margin:0}.copyright{margin:0}h1{font-size:1.55rem;line-height:1.45;margin:20px 0 8px}h2{font-size:1.2rem;margin:36px 0 10px;padding-bottom:6px;border-bottom:2px solid var(--accent-weak)}h3{font-size:1.02rem;margin:24px 0 8px}.lead{color:var(--muted);margin-top:0}.updated{font-size:.8rem;color:var(--muted);margin-top:40px}.tool{display:grid;gap:20px;margin:20px 0 8px}@media(min-width:720px){.tool{grid-template-columns:1fr 1fr;align-items:start}}.tool-form{display:grid;grid-template-columns:1fr 1fr;gap:14px;padding:16px;border:1px solid var(--line);border-radius:var(--radius)}.field{grid-column:1 / -1;display:flex;flex-direction:column;gap:4px;min-width:0}.field-half{grid-column:span 1}@media(max-width:460px){.field-half{grid-column:1 / -1}}.field label{font-size:.85rem;font-weight:600}.unit{font-weight:400;color:var(--muted)}.field input,.field select,.field textarea{font:inherit;font-size:1rem;padding:9px 10px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--fg);width:100%;min-width:0}.field textarea{resize:vertical;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.9rem;line-height:1.6}.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid var(--accent);outline-offset:1px}.check{display:flex;align-items:center;gap:8px;font-size:.88rem;font-weight:500}.check input{width:auto}.help{font-size:.78rem;color:var(--muted);margin:2px 0 0}.privacy-note{grid-column:1 / -1;font-size:.78rem;color:var(--muted);margin:0;padding-top:4px;border-top:1px dashed var(--line)}.tool-result{padding:16px;border:1px solid var(--line);border-radius:var(--radius);background:var(--accent-weak)}.tool-result h2{margin:0 0 10px;font-size:.95rem;border:0;padding:0;color:var(--muted)}.rows{margin:0}.row{display:flex;flex-wrap:wrap;justify-content:space-between;gap:4px 12px;padding:8px 0;border-bottom:1px solid var(--line)}.row:last-child{border-bottom:0}.row dt{font-size:.85rem;color:var(--muted)}.row dd{margin:0;text-align:right;font-variant-numeric:tabular-nums}.row .value{font-weight:600}.row-emphasis{background:var(--bg);border-radius:8px;padding:12px;margin-bottom:6px;border-bottom:0}.row-emphasis dt{font-weight:600;color:var(--fg)}.row-emphasis .value{font-size:1.35rem;color:var(--accent)}.row .note{display:block;font-size:.75rem;color:var(--muted);font-weight:400}.row dd pre{text-align:left;background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:10px;margin:4px 0;overflow-x:auto;max-height:320px;font-size:.85rem;white-space:pre-wrap;word-break:break-word}.copy{font:inherit;font-size:.78rem;padding:4px 10px;border:1px solid var(--line);border-radius:6px;background:var(--bg);color:var(--fg);cursor:pointer}.warnings{margin:12px 0 0;padding:10px 12px 10px 28px;background:var(--warn-bg);border:1px solid var(--warn-line);border-radius:8px;font-size:.82rem}.warnings li+li{margin-top:6px}.error{color:var(--error);font-weight:600;margin:0}.card-grid{list-style:none;padding:0;margin:16px 0;display:grid;gap:10px}@media(min-width:620px){.card-grid{grid-template-columns:1fr 1fr}}.card{border:1px solid var(--line);border-radius:var(--radius);padding:14px}.card a{font-weight:600;text-decoration:none}.card p{margin:4px 0 0;font-size:.85rem;color:var(--muted)}.cluster-nav{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0;padding:0;list-style:none}.cluster-nav a{display:inline-block;padding:6px 12px;border:1px solid var(--line);border-radius:999px;text-decoration:none;font-size:.85rem}.prose :is(ul,ol){padding-left:1.3em}.prose li+li{margin-top:4px}.prose table{width:100%;border-collapse:collapse;font-size:.88rem;margin:12px 0;display:block;overflow-x:auto}.prose th,.prose td{border:1px solid var(--line);padding:7px 10px;text-align:left;white-space:nowrap}.prose th{background:var(--accent-weak)}.prose code{background:var(--accent-weak);padding:1px 5px;border-radius:4px;font-size:.88em}.faq dt{font-weight:600;margin-top:14px}.faq dd{margin:4px 0 0;color:var(--muted)}.sources{font-size:.85rem;padding-left:1.2em}.sources li+li{margin-top:4px}.prose pre{background:var(--accent-weak);color:var(--fg);border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:8px;padding:12px 14px;overflow-x:auto;font-size:.88rem;line-height:1.7}.prose pre code{background:none;padding:0;font-size:inherit;color:inherit}