:root{color-scheme:light;--ink:#172033;--muted:#5b6475;--blue:#2563eb;--line:#e1e6ef;--paper:#f7f9fc;--white:#fff;font-family:'DM Sans',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;color:var(--ink);background:var(--white);line-height:1.65}
*{box-sizing:border-box}body{margin:0}a{color:var(--blue);text-underline-offset:4px}a:hover{text-decoration-thickness:2px}button,input{font:inherit}button{cursor:pointer}button,a,input{touch-action:manipulation}:focus-visible{outline:3px solid #2563eb;outline-offset:4px}.container{width:min(100% - 40px,1080px);margin-inline:auto}.site-header{border-bottom:1px solid var(--line);background:#fff}.header-inner{display:flex;align-items:center;gap:28px;min-height:88px;flex-wrap:wrap;padding-block:18px}.header-inner a{color:var(--ink);text-decoration:none}.header-inner .brand{margin-right:auto}.brand{font-size:28px;font-weight:700;letter-spacing:-1.2px;color:var(--ink);text-decoration:none}.brand span{color:var(--blue)}.wpd-language-switcher a[aria-current=page]{color:var(--ink);font-weight:700}.skip-link{position:absolute;top:-100px;left:15px;padding:12px;background:#fff;z-index:10}.skip-link:focus{top:12px}.breadcrumbs{font-size:.85rem;color:var(--muted);display:flex;gap:12px;flex-wrap:wrap;padding-top:24px}.intro{max-width:800px;margin:36px auto 30px;text-align:center}h1,h2,h3{font-family:'Fraunces',Georgia,serif;line-height:1.25;letter-spacing:-.025em;hyphens:auto;overflow-wrap:anywhere}h1{font-size:clamp(2rem,5vw,3.25rem);margin:0 0 20px}h2{font-size:clamp(1.5rem,3vw,2rem);margin:40px 0 16px}h3{font-size:1.2rem;margin:28px 0 12px}.intro p{font-size:1.08rem;color:var(--muted)}p{margin:0 0 18px}button{border:1px solid var(--line);border-radius:9px;padding:10px 15px;background:#fff;color:var(--ink);white-space:normal;overflow-wrap:anywhere;min-height:44px}button:hover{border-color:var(--blue);background:#f3f7ff}.calculator{max-width:800px;margin:32px auto 56px;padding:32px;border:1px solid var(--line);border-radius:20px;background:var(--paper);box-shadow:0 8px 35px #17203308}.calc-top{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:26px}.badge{font-size:.88rem;background:#e8efff;color:#1d4ed8;border-radius:99px;padding:7px 14px;font-weight:700}.fields{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-bottom:22px}.fields>*{min-width:0}label{display:block;font-size:.9rem;font-weight:600;margin-bottom:8px}input[type=text]{width:100%;min-width:0;border:1px solid #cbd3df;border-radius:10px;padding:13px 15px;font-size:1.3rem;color:var(--ink);background:#fff}input[aria-invalid=true]{border-color:#c02626}.output-panel{min-width:0}output{display:block;font-size:1.85rem;font-weight:700;color:#1d4ed8;overflow-wrap:anywhere;min-height:61px;padding:8px 0}.presets{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0 24px}.presets button{font-size:.85rem;padding:7px 11px}.presets button[aria-pressed=true]{color:#fff;background:var(--blue);border-color:var(--blue)}.formula{background:#eef2f8;border-radius:8px;padding:12px 16px;margin:20px 0;font-family:ui-monospace,Consolas,monospace;font-size:.92rem;overflow-wrap:anywhere}.hint{font-size:.85rem;color:var(--muted)}.actions{display:flex;gap:10px;flex-wrap:wrap}.primary{color:#fff;background:var(--blue);border-color:var(--blue);font-weight:600}.primary:hover{color:#fff;background:#1d4ed8}#message{min-height:1.65em;font-size:.9rem;margin:16px 0 0;color:#8c2020}.article{max-width:760px;margin:auto}.article table{border-collapse:collapse;width:100%;font-size:.92rem;margin:20px 0 35px;table-layout:fixed}.article th,.article td{padding:12px 16px;border-bottom:1px solid var(--line);text-align:left;overflow-wrap:anywhere}.article th{background:#eef2f8}.article tbody tr:nth-child(even){background:#f8fafc}code{font-family:ui-monospace,Consolas,monospace;font-size:.9em;overflow-wrap:anywhere}.related{max-width:760px;margin:40px auto 70px;border-top:1px solid var(--line)}.related ul{padding-left:20px}.related li{margin-bottom:12px}.rgb-fields{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.rgb-fields>*{min-width:0}input[type=range]{width:100%;accent-color:var(--blue);margin-top:16px;min-height:32px}.swatch{height:120px;border:1px solid #cbd3df;border-radius:12px;margin:24px 0}.color-result{font-family:ui-monospace,Consolas,monospace}.site-footer{border-top:1px solid var(--line);background:var(--paper);padding:38px 0 46px;font-size:.9rem}.site-footer p{margin:12px 0;color:var(--muted)}.tool-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;margin:48px 0 80px}.tool-card{display:block;text-decoration:none;color:var(--ink);padding:28px;border:1px solid var(--line);border-radius:16px;background:var(--paper)}.tool-card:hover{border-color:var(--blue)}.tool-card h2{margin:0 0 15px;font-size:1.5rem}.tool-card p{font-size:.92rem;color:var(--muted)}.tool-card>span{color:var(--blue);font-size:1.5rem}
#message{color:#1d4ed8}#message.error{color:#8c2020}button:disabled{cursor:default;opacity:.55}
#batch{width:100%;padding:12px;border:1px solid #cbd3df;border-radius:10px;font:inherit;resize:vertical}#batch-result{white-space:pre-wrap}
.full-tool-article .tool-description{padding:0}.full-tool-article .tool-meta{font-size:.85rem;line-height:1.7;color:#6b7280;margin-bottom:28px}.full-tool-article p,.full-tool-article li{overflow-wrap:anywhere}.full-tool-article ul,.full-tool-article ol{padding-left:24px;margin:18px 0 24px}.full-tool-article li{margin-bottom:9px}.full-tool-article pre{display:block;max-width:100%;overflow-x:auto;white-space:pre;background:#f2f4fa;border:1px solid #e1e6ef;border-radius:12px;padding:20px;margin:22px 0;font:13px/1.7 ui-monospace,Consolas,monospace}.full-tool-article pre code{white-space:inherit;overflow-wrap:normal;word-break:normal;font:inherit}.full-tool-article img,.full-tool-article svg{max-width:100%;height:auto}.full-tool-article figure{margin:24px 0}.full-tool-article blockquote{padding:18px 22px;margin:24px 0;border-left:3px solid #1847f0;background:#f2f6ff}.full-tool-article .article-table-scroll{max-width:100%;overflow-x:auto;margin:22px 0}.full-tool-article .article-table-scroll table{min-width:0;table-layout:auto;margin:0}.full-tool-article .article-table-scroll--wide table{min-width:580px}.full-tool-article table a{overflow-wrap:anywhere}html:lang(ja) .full-tool-article em,html:lang(ja) .full-tool-article i{font-style:normal}
.legacy-widget .cpg-palette-selector{flex-wrap:wrap;min-width:0;max-width:100%}.legacy-widget .cpg-select{max-width:100%;min-width:0}
html:lang(ja),html:lang(ja) body,html:lang(ja) h1,html:lang(ja) h2,html:lang(ja) h3,html:lang(ja) button,html:lang(ja) input{font-family:'Hiragino Kaku Gothic ProN','Yu Gothic',Meiryo,sans-serif;font-style:normal;text-transform:none;line-height:1.8;line-break:strict;letter-spacing:normal}html:lang(ja) h1{font-size:clamp(1.8rem,4vw,2.6rem)}
@media(max-width:600px){.container{width:calc(100% - 32px)}.header-inner{gap:14px 18px;min-height:76px}.header-inner .brand{flex-basis:100%;margin-right:0}.header-inner a:not(.brand){font-size:.85rem}.intro{margin:28px 0}.intro p{font-size:1rem}.calculator{padding:22px 18px;margin:24px 0 38px;border-radius:14px}.fields,.tool-grid{grid-template-columns:1fr}.fields{gap:18px}.rgb-fields{gap:10px}.rgb-fields input[type=text]{font-size:1.1rem;padding:10px}.rgb-fields label{font-size:.8rem}.article th,.article td{padding:10px 12px}.color-result{font-size:1.5rem}.tool-grid{margin-top:30px}.tool-card{padding:22px}.calc-top{gap:12px}.calc-top button{font-size:.85rem}.wpd-language-switcher{font-size:.9rem!important}}