@import"https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Noto+Sans+JP:wght@400;600;700&display=swap";:root{color:#182135;background:#f5f7fb;font-family:DM Sans,Noto Sans JP,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility;--ink: #182135;--muted: #68738a;--blue: #146bd1;--blue-dark: #0d4d9c;--border: #dce2ec;--surface: #ffffff}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh}a{color:var(--blue)}button,select,input{font:inherit}button{border:0;border-radius:8px;padding:.65rem 1rem;color:#fff;background:var(--blue);cursor:pointer}button:hover{background:var(--blue-dark)}button.secondary{color:var(--ink);background:#edf1f7}.site-header{display:flex;align-items:center;justify-content:space-between;min-height:68px;padding:0 5vw;border-bottom:1px solid var(--border);background:#ffffffe0;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.site-header>a{color:var(--ink);font-weight:700;text-decoration:none}.site-header nav{display:flex;align-items:center;gap:1.25rem}.locale-switcher select{padding:.45rem 2rem .45rem .7rem;border:1px solid var(--border);border-radius:7px;background:var(--surface)}.article-shell{display:grid;grid-template-columns:minmax(0,760px) minmax(240px,320px);gap:3rem;width:min(1180px,90vw);margin:4rem auto}article{padding:2.5rem 3rem;border:1px solid var(--border);border-radius:14px;background:var(--surface);box-shadow:0 12px 40px #1b294412}article h1{margin-top:0;font-size:clamp(2rem,4vw,3.4rem);letter-spacing:-.04em}article p,article li{line-height:1.75}.formula-card{align-self:start;padding:1.5rem;border:1px solid var(--border);border-radius:14px;background:var(--surface)}.formula-card label{display:grid;gap:.35rem;margin:1rem 0;color:var(--muted);font-size:.9rem}.formula-card input{width:100%;padding:.65rem;border:1px solid var(--border);border-radius:7px;color:var(--ink)}.formula-card output{display:block;margin-top:1rem;font-size:1.25rem;font-weight:700}.eyebrow{color:var(--blue);font-size:.75rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase}.notice,.status{color:var(--muted)}.error{color:#b42318}.tool-page{width:min(540px,90vw);margin:4rem auto}.admin-shell{min-height:100vh;background:#eef2f8}.admin-header{display:flex;align-items:center;justify-content:space-between;padding:1.25rem 2rem;border-bottom:1px solid var(--border);background:var(--surface)}.admin-header h1{margin:.15rem 0 0;font-size:1.25rem}.admin-header .eyebrow{margin:0}.actions{display:flex;gap:.65rem}.locale-tabs{display:flex;gap:.25rem;padding:.75rem 2rem 0}.locale-tabs button{border-radius:7px 7px 0 0;color:var(--muted);background:transparent}.locale-tabs button.active{color:var(--blue);background:var(--surface)}.split-editor{display:grid;grid-template-columns:1fr 1fr;min-height:calc(100vh - 150px);margin:0 2rem 2rem;border:1px solid var(--border);border-radius:0 10px 10px;overflow:hidden;background:var(--surface)}.editor-pane,.preview-pane{min-width:0}.editor-pane{border-right:1px solid var(--border)}.editor-pane h2,.preview-pane h2{margin:0;padding:.75rem 1rem;border-bottom:1px solid var(--border);color:var(--muted);font-size:.8rem;text-transform:uppercase}.preview-pane pre,.rendered-preview,.preview-pane>.error{padding:1rem 1.5rem}.preview-pane pre{white-space:pre-wrap}.rendered-preview{line-height:1.7}.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}@media(max-width:800px){.article-shell,.split-editor{grid-template-columns:1fr}.article-shell{margin:2rem auto}article{padding:1.5rem}.editor-pane{border-right:0;border-bottom:1px solid var(--border)}}