@charset "UTF-8";
:root{color-scheme:light;--ink:#172029;--muted:#56616d;--paper:#fff;--line:#dfe4e9;--green:#2149b4;--white:#fff;--lime:#edf2ff;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}
*{box-sizing:border-box}body{margin:0}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit;color:inherit}button{cursor:pointer}button:disabled{cursor:default;opacity:.5}[hidden]{display:none!important}:focus-visible{outline:3px solid var(--green);outline-offset:3px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip{position:absolute;left:16px;top:-80px;padding:12px;background:var(--ink);color:white;z-index:20}.skip:focus{top:12px}
.shell{width:min(1120px,calc(100% - 64px));margin:auto}.site-header{height:80px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{font-size:30px;font-weight:800;letter-spacing:-1.6px;display:flex;align-items:baseline}.brand-dot{color:var(--green);font-size:38px}.nav{display:flex;align-items:center;gap:30px;font-size:14px}.nav a{padding:12px 0}.nav a:hover,.crumbs a:hover,.group-heading a:hover{color:var(--green)}#language{width:126px;min-height:44px;padding:8px 10px;font-size:13px;border:1px solid var(--line);background:white;border-radius:5px}
.hero{padding:44px 0 32px;display:grid;grid-template-columns:minmax(0,1fr) minmax(260px,370px);gap:55px;align-items:end}.eyebrow{font-size:11px;letter-spacing:1.5px;text-transform:uppercase;font-weight:700;color:var(--muted);margin:0 0 14px}.hero h1{font-family:Georgia,"Times New Roman",serif;font-size:clamp(32px,3.5vw,46px);line-height:1.13;letter-spacing:-1.6px;max-width:610px;font-weight:500;margin:0 0 16px}html:lang(ja) .hero h1,html:lang(ko) .hero h1{font-family:inherit;letter-spacing:-1.5px;font-weight:650}.lead{color:var(--muted);font-size:15px;line-height:1.7;margin:0;max-width:600px}.search-wrap label{display:block;font-size:12px;font-weight:650;margin-bottom:10px}.search-box{position:relative}.search-box input{width:100%;height:56px;padding:12px 52px 12px 16px;background:#f5f7fa;border:1px solid #a8b3bf;border-radius:5px;font-size:16px}.search-box kbd{position:absolute;right:14px;top:16px;border:1px solid #bbc4ce;border-radius:3px;padding:1px 7px;font:14px/20px ui-monospace,monospace;color:var(--muted)}
.catalog-heading{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:0 0 20px;border-bottom:1px solid var(--line)}.filters{display:flex;gap:4px;flex-wrap:wrap}.filters button{padding:10px 15px;min-height:44px;border:0;background:transparent;border-radius:4px;font-size:13px;color:var(--muted)}.filters button:hover{background:#f1f4f8}.filters button[aria-pressed=true]{background:var(--ink);color:white}.count{font-size:12px;white-space:nowrap;color:var(--muted)}.tool-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 48px}.directory{align-items:start}.tool-group{min-width:0;margin-top:28px}.group-heading{display:flex;align-items:center;gap:12px;padding-bottom:14px;border-bottom:2px solid var(--ink)}.group-number{font:12px ui-monospace,monospace;color:var(--muted)}.group-heading h2{margin:0;flex:1;font-size:15px;font-weight:700}.group-heading>span:last-child{font:12px ui-monospace,monospace;color:var(--muted)}.tool-card{display:flex;gap:16px;align-items:center;padding:18px 0;border-bottom:1px solid var(--line);min-height:94px;min-width:0;transition:background .12s}.tool-card:hover{background:#f5f7fb}.tool-row-copy{flex:1;min-width:0}.tool-card h2{font-size:16px;line-height:1.4;font-weight:650;letter-spacing:-.3px;margin:0 0 5px;overflow-wrap:anywhere}.tool-card p{font-size:13px;line-height:1.6;color:var(--muted);margin:0;overflow-wrap:anywhere}.card-arrow{color:var(--green);font-size:21px;flex-shrink:0;padding-right:5px}.empty{padding:45px 20px;text-align:center;background:#f5f7fa;color:var(--muted)}.empty button{padding:12px 20px;border:1px solid var(--line);background:white;border-radius:4px}.about-strip{border-top:1px solid var(--line);padding:28px 0;margin-top:40px;display:flex;align-items:baseline;gap:28px}.about-strip h2{font-size:14px;margin:0;white-space:nowrap}.about-strip p{font-size:13px;line-height:1.7;margin:0;color:var(--muted);flex:1}.about-strip a{font-size:12px;white-space:nowrap;color:var(--green)}.site-footer{padding:25px 0 32px;border-top:1px solid var(--line);font-size:12px;color:var(--muted);display:flex;justify-content:space-between;gap:16px}
.crumbs{display:flex;flex-wrap:wrap;gap:8px;font-size:12px;line-height:1.6;color:var(--muted);margin:25px 0 18px}.tool-heading{margin-bottom:22px}.tool-heading h1{font-size:32px;line-height:1.2;letter-spacing:-1px;margin:0 0 8px;font-weight:700;overflow-wrap:anywhere}.tool-heading p{font-size:15px;color:var(--muted);margin:0;line-height:1.6}.workspace{display:grid;grid-template-columns:1.05fr 1fr;border:1px solid #b7c2ce;border-radius:6px;overflow:hidden;background:white}.input-panel,.result-panel{padding:26px;min-width:0}.panel-kicker{display:flex;justify-content:space-between;gap:10px;font-size:11px;color:var(--muted);margin-bottom:20px}.panel-kicker>span:first-child{font-weight:700;text-transform:uppercase;letter-spacing:1px;color:var(--ink)}#tool-form label:not(.checkbox){display:block;font-size:13px;font-weight:600;margin:16px 0 8px}#tool-form label:first-child{margin-top:0}input,select,textarea{width:100%;padding:11px 12px;min-height:48px;border:1px solid #aeb9c5;border-radius:4px;background:white;font-size:16px}input:hover,select:hover,textarea:hover{border-color:#697a8b}input[type=date]{min-width:0}textarea{min-height:155px;max-height:500px;resize:vertical;font:14px/1.6 ui-monospace,SFMono-Regular,Consolas,monospace}input[type=checkbox]{width:18px;min-height:18px;height:18px;accent-color:var(--green)}.checkbox{display:flex;align-items:center;gap:10px;margin-top:14px;font-size:14px;min-height:32px}.field-pair{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:14px}.field-pair label{margin-top:0!important}.actions{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:20px}.button{padding:10px 15px;min-height:44px;font-size:13px;font-weight:600;border:1px solid #b2bfce;border-radius:4px;background:white}.button:hover:not(:disabled){border-color:var(--green);background:#f0f4ff}.primary{background:var(--green);border-color:var(--green);color:white}.primary:hover:not(:disabled){background:#153789;color:white}.quiet{border-color:transparent;color:var(--muted)}.result-panel{background:#f0f4ff;border-left:1px solid #b7c2ce;display:flex;flex-direction:column;scroll-margin:16px}.result{margin-bottom:16px;min-height:115px;display:flex;flex-direction:column;justify-content:center;overflow-wrap:anywhere}.result-value{font-size:44px;line-height:1.3;letter-spacing:-1px;font-weight:650;color:#153580}.result pre{font:14px/1.7 ui-monospace,SFMono-Regular,Consolas,monospace;letter-spacing:0;white-space:pre-wrap;overflow:auto;max-height:340px;margin:0}.result p{font-size:14px;line-height:1.7;margin:12px 0 0;color:#35496c}.result-actions{margin-top:auto;display:flex;align-items:center;flex-wrap:wrap;gap:10px;min-height:44px}.result-actions button{background:white}.status{font-size:12px;color:var(--green)}.error{color:#94221b;font-size:14px;line-height:1.6;padding:10px 12px;background:#fff3f1;border-left:3px solid #af3023;border-radius:3px;margin:0 0 14px}.result.is-error{font-size:36px;color:var(--muted)}body[data-tool=text] .result{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.stat span{display:block;color:var(--muted);font-size:12px;margin-bottom:6px}.stat strong{font-size:30px}.result-jump{display:none}.tool-meta{font-size:12px;color:var(--muted);margin-top:14px}.guide{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:48px;padding:32px 0}.guide h2,.worked-examples h2,.related h2{font-size:17px;font-weight:650;margin:0 0 12px}.guide p{font-size:14px;line-height:1.8;color:var(--muted);margin:0}.worked-examples{padding-bottom:30px}.example-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,280px),1fr));gap:20px}.example-card{padding:20px;min-width:0;border-left:2px solid #9cb1e3;background:#f7f9fc;display:flex;flex-direction:column;align-items:flex-start}.example-label{font-size:12px;color:var(--muted);margin:0 0 6px}.example-card pre{font:14px/1.6 ui-monospace,monospace;white-space:pre-wrap;overflow-wrap:anywhere;max-width:100%;margin:0 0 16px}.example-answer{font-weight:650;color:#153580}.example-card .button{margin-top:auto}.related{border-top:1px solid var(--line);padding:26px 0 35px}.related-links{display:flex;flex-wrap:wrap;gap:12px}.related a{font-size:14px;min-height:44px;padding:12px 0;margin-right:14px;color:var(--green)}.related a:hover{text-decoration:underline}.category-page{padding-bottom:35px}.category-page h1{font-size:34px;letter-spacing:-1px}.category-page .lead{margin-bottom:20px}.category-guide{margin:35px 0;max-width:780px}.category-guide h3{font-size:16px;margin:25px 0 8px}.category-guide p{font-size:14px;color:var(--muted);line-height:1.8}.category-links{display:flex;gap:20px;flex-wrap:wrap;font-size:13px;color:var(--green)}.category-links a{padding:12px 0;min-height:44px}.policy{max-width:740px;line-height:1.8;padding:25px 0 60px}.policy h1{font-size:32px;letter-spacing:-1px}.policy h2{font-size:19px;margin-top:30px}.policy p{font-size:15px;color:var(--muted)}.policy a{text-decoration:underline}.monetization-slot{display:none}
@media(max-width:850px){.hero{grid-template-columns:1fr;gap:24px;padding:32px 0}.search-wrap{max-width:600px}.tool-grid{column-gap:28px}.shell{width:calc(100% - 40px)}.input-panel,.result-panel{padding:22px}.about-strip{align-items:flex-start}}
@media(max-width:580px){.shell{width:calc(100% - 32px)}.site-header{height:66px}.brand{font-size:27px}.nav{gap:0}.nav>a{display:none}#language{width:118px}.hero{padding:26px 0 20px;gap:20px}.hero h1{font-size:34px;letter-spacing:-1px;margin-bottom:12px}.eyebrow{font-size:10px;margin-bottom:10px}.lead{font-size:14px}.search-wrap label{font-size:12px;margin-bottom:7px}.search-box input{height:52px}.search-box kbd{display:none}.catalog-heading{flex-wrap:wrap;gap:8px;padding-bottom:12px}.filters{gap:0;width:100%;flex-wrap:nowrap;overflow:auto}.filters button{padding:10px 12px;font-size:12px;flex-shrink:0}.count{margin-left:auto}.tool-grid{grid-template-columns:1fr}.tool-group{margin-top:22px}.group-heading{padding-bottom:12px}.tool-card{padding:15px 0;min-height:85px}.tool-card h2{font-size:16px}.tool-card p{font-size:13px}.about-strip{display:block;margin-top:28px;padding:24px 0}.about-strip p{margin:10px 0}.about-strip a{display:inline-block;min-height:44px;padding-top:12px}.site-footer{flex-wrap:wrap;font-size:11px;padding:20px 0}.crumbs{font-size:11px;margin:15px 0 12px;gap:5px}.tool-heading{margin-bottom:12px}.tool-heading h1{font-size:25px;letter-spacing:-.7px}.tool-heading p{font-size:14px}.result-jump{display:inline-block;font-size:13px;color:var(--green);min-height:44px;padding:12px 0}.workspace{grid-template-columns:1fr}.input-panel,.result-panel{padding:18px}.panel-kicker{margin-bottom:14px;line-height:1.5}.panel-kicker>span:last-child{text-align:right}#tool-form label:not(.checkbox){font-size:13px;margin:12px 0 7px}.actions{margin-top:16px}.field-pair{gap:12px;margin-top:12px}.result-panel{border-left:0;border-top:1px solid #b7c2ce}.result{min-height:60px;margin-bottom:12px}.result-value{font-size:34px}.result pre{max-height:220px;font-size:13px}textarea{min-height:110px}.guide{grid-template-columns:1fr;gap:22px;padding:28px 0}.guide p{font-size:14px}.example-card{padding:17px}.related-links{gap:4px 15px}.related a{font-size:13px;margin-right:0}.category-page h1{font-size:28px}.category-links{gap:12px}.policy{padding-top:20px}.policy p{font-size:14px}.stat strong{font-size:26px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
@media(max-width:580px){#tool-form textarea{font-size:16px}.checkbox{min-height:44px}}
.directory-column{min-width:0}.directory-column:not(:has(.tool-group:not([hidden]))){display:none}