:root{--bg: #eef1f3;--surface: #ffffff;--surface-raised: #ffffff;--result-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;--raise-shadow: 0 1px 3px rgb(16 24 32 / 8%);--raise-border: transparent}:root[data-theme=dark]{--bg: #0f1215;--surface: #181d22;--surface-raised: #232a31;--result-bg: #16211f;--fg: #e8ebee;--muted: #a7b2bf;--line: #333c46;--accent: #5fd6c1;--accent-weak: #1d2c2a;--warn-bg: #2e2718;--warn-line: #6b5a2e;--error: #ff8a80;--raise-shadow: none;--raise-border: #3a444f}*,*: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(--surface);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;align-items:center;gap:16px;font-size:.92rem}.theme-toggle{font:inherit;font-size:1rem;line-height:1;width:34px;height:34px;display:grid;place-items:center;padding:0;border:1px solid var(--line);border-radius:999px;background:var(--surface);color:var(--fg);cursor:pointer}.theme-toggle:hover{border-color:var(--accent)}.theme-toggle:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.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(--result-bg);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);background:var(--surface)}.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(--surface-raised);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(--result-bg)}.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(--surface-raised);border:1px solid var(--raise-border);box-shadow:var(--raise-shadow);border-radius:8px;padding:12px;margin-bottom:6px}.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(--surface-raised);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(--surface-raised);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;background:var(--surface)}.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{max-width:40em}.prose>p{margin:0 0 1.4em}.prose strong{font-weight:700;background:linear-gradient(transparent 62%,var(--accent-weak) 62%);padding:0 1px}.prose h3{font-size:1.05rem;margin:2em 0 .6em;padding-left:10px;border-left:3px solid var(--accent);line-height:1.5}.prose blockquote{margin:1.4em 0;padding:2px 0 2px 16px;border-left:3px solid var(--line);color:var(--muted)}.prose :is(ul,ol){padding-left:1.3em;margin:0 0 1.4em}.prose li+li{margin-top:8px}.prose li{padding-left:2px}.prose li::marker{color:var(--accent)}.zu{margin:1.8em 0}.zu figcaption{margin-top:8px;font-size:.8rem;color:var(--muted)}.zu-band{display:flex;gap:3px;align-items:stretch}.zu-seg{flex-basis:0;min-width:4.5em;padding:9px 10px;border:1px solid var(--line);border-radius:8px;background:var(--surface);box-shadow:var(--raise-shadow)}.zu-seg.is-strong{border-color:var(--accent);background:var(--accent-weak)}.zu-seg-range{display:block;font-size:.78rem;color:var(--muted);font-variant-numeric:tabular-nums;white-space:nowrap}.zu-seg-dash{margin:0 1px}.zu-seg-label{display:block;margin-top:2px;font-size:.88rem;font-weight:600;line-height:1.45}.zu-seg.is-strong .zu-seg-label{color:var(--accent)}@media(max-width:560px){.zu-band{flex-direction:column}.zu-seg{min-width:0}}.zu-bars{display:grid;gap:8px}.zu-bar-row{display:grid;grid-template-columns:minmax(5em,auto) 1fr auto;gap:10px;align-items:center;font-size:.88rem}.zu-bar-label{color:var(--muted)}.zu-bar-track{background:var(--accent-weak);border-radius:4px;overflow:hidden;height:14px}.zu-bar-fill{display:block;height:100%;background:color-mix(in srgb,var(--accent) 45%,transparent);border-radius:4px}.zu-bar-row.is-strong .zu-bar-fill{background:var(--accent)}.zu-bar-row.is-strong :is(.zu-bar-label,.zu-bar-value){color:var(--fg);font-weight:700}.zu-bar-value{font-variant-numeric:tabular-nums;white-space:nowrap;color:var(--muted)}.zu-flow-q{margin:0 0 10px;padding:10px 12px;border:1px solid var(--line);border-radius:8px;background:var(--surface);font-weight:600;box-shadow:var(--raise-shadow)}.zu-flow-branches{display:grid;gap:8px}.zu-flow-branch{display:grid;grid-template-columns:minmax(4em,auto) 1fr;gap:10px;align-items:baseline;padding:9px 12px;border-left:3px solid var(--accent);background:var(--accent-weak);border-radius:0 8px 8px 0;font-size:.9rem}.zu-flow-when{font-weight:700;color:var(--accent)}.callout{margin:1.6em 0;padding:12px 14px;border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:0 var(--radius) var(--radius) 0;background:var(--surface)}.callout:before{content:attr(data-label);display:block;font-size:.75rem;font-weight:700;letter-spacing:.06em;color:var(--accent);margin-bottom:4px}.callout>:first-of-type{margin-top:0}.callout>:last-child{margin-bottom:0}.callout-warn{border-left-color:var(--warn-line);background:var(--warn-bg)}.callout-warn:before{color:inherit}.callout-example{border-left-color:var(--muted)}.callout-example:before{color:var(--muted)}.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}.evidence{background:var(--warn-bg);border:1px solid var(--warn-line);border-radius:var(--radius);padding:12px 14px;margin:20px 0;font-size:.85rem}.evidence strong{display:block;margin-bottom:4px}.evidence p{margin:4px 0 0}.product-nav{padding:7px 11px;border-radius:999px;background:var(--accent);color:#fff;font-weight:700;text-decoration:none;white-space:nowrap}:root[data-theme=dark] .product-nav{color:#0f2b26}.product-proof{position:relative;overflow:hidden;margin:24px 0 42px;padding:clamp(22px,5vw,34px);border:1px solid color-mix(in srgb,var(--accent) 40%,var(--line));border-radius:17px;background:linear-gradient(135deg,var(--surface),var(--accent-weak));box-shadow:0 13px 34px #0b6b5e1f}.product-proof h2{max-width:31em;margin:4px 0 10px;padding:0;border:0;font-size:clamp(1.3rem,3.3vw,1.8rem)}.product-proof>p:not(.product-kicker){max-width:46em}.product-kicker{margin:0;color:var(--accent);font-size:.76rem;font-weight:800;letter-spacing:.07em}.product-facts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px;margin:18px 0;padding:0;list-style:none}.product-facts li{padding:11px 12px;border:1px solid var(--line);border-radius:9px;background:var(--surface-raised)}.product-facts strong,.product-facts span{display:block}.product-facts strong{color:var(--accent)}.product-facts span{color:var(--muted);font-size:.75rem}.product-actions{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px}.product-button{display:inline-flex;min-height:43px;align-items:center;justify-content:center;padding:9px 16px;border-radius:8px;background:var(--accent);color:#fff;font-weight:800;text-decoration:none}:root[data-theme=dark] .product-button{color:#0f2b26}@media(max-width:720px){.site-header nav{gap:9px;font-size:.8rem}.product-nav{padding:6px 9px}.product-facts{grid-template-columns:1fr}.product-facts li{display:grid;grid-template-columns:7em 1fr;gap:8px;align-items:baseline}.product-actions,.product-button{width:100%}.product-actions>a:not(.product-button){display:block;width:100%;text-align:center}}