:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#172033;background:#f6f7f9;line-height:1.5}
*{box-sizing:border-box}body{margin:0;background:linear-gradient(180deg,#f7f8fa 0,#fff 360px);color:#172033}a{color:inherit;text-decoration:none}button,input,select{font:inherit}
.wrap{width:min(1160px,calc(100% - 28px));margin:auto}.site-header{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid #e7e9ee}.header-row{display:flex;align-items:center;gap:20px;min-height:68px}.brand{display:flex;align-items:center;gap:11px;font-weight:800}.brand img{width:36px;height:36px}.header-nav{display:flex;gap:16px;margin-left:auto;font-size:.94rem}.hero{padding:48px 0 28px}.hero h1{font-size:clamp(2rem,5vw,3.6rem);line-height:1.05;margin:.25rem 0 1rem;letter-spacing:-.04em}.hero p{max-width:780px;color:#596277;font-size:1.05rem}.eyebrow{font-weight:800;text-transform:uppercase;letter-spacing:.08em;font-size:.78rem;color:#1d4ed8}
.search-shell{margin:8px 0 30px}.search-shell input{width:100%;padding:16px 18px;border:1px solid #d7dae2;border-radius:14px;background:#fff;box-shadow:0 6px 24px rgba(28,39,62,.06)}
.section-title{font-size:1.35rem;margin:30px 0 14px}.tool-grid,.category-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.card{display:block;padding:18px;border:1px solid #e2e5eb;border-radius:16px;background:#fff;box-shadow:0 4px 18px rgba(28,39,62,.04);transition:.16s}.card:hover{transform:translateY(-2px);border-color:#3b82f6}.card-title{font-weight:800}.card p{color:#657087;margin:.55rem 0 0;font-size:.94rem}
.privacy-banner,.safety-banner{display:flex;gap:8px;align-items:flex-start;padding:13px 15px;border-radius:13px;background:#eff6ff;border:1px solid #bfdbfe;margin:4px 0 20px;color:#1e40af}.safety-banner{background:#f3f5f8;border-color:#e0e4eb;color:#4d576c}
.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;padding-top:24px;color:#687187;font-size:.9rem}.breadcrumb span+span:before{content:"/";margin-right:8px;color:#a0a7b5}
.tool-shell{display:grid;grid-template-columns:1.2fr .8fr;gap:18px;align-items:start}.panel{background:#fff;border:1px solid #dfe3ea;border-radius:18px;box-shadow:0 8px 32px rgba(28,39,62,.06);overflow:hidden}.panel-head,.result-head{padding:16px 18px;border-bottom:1px solid #e8eaf0;background:#fbfbfc}.editor-body,.result-body{padding:18px}.calc-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px}.field{display:block}.field>span:first-child{display:block;font-weight:700;font-size:.88rem;margin-bottom:6px}.input-wrap{display:flex;align-items:center;border:1px solid #d4d8e1;border-radius:12px;background:#fff;overflow:hidden}.input-wrap input,.input-wrap select{width:100%;border:0;outline:0;padding:13px;background:transparent;min-width:0}.unit-badge{padding:0 10px;color:#737d91;font-size:.84rem;white-space:nowrap}.select-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:14px}.actions{display:flex;gap:10px;margin-top:16px}.btn{border:1px solid #d6dae2;border-radius:11px;padding:11px 16px;background:#fff;cursor:pointer;font-weight:750}.btn.primary{background:#172033;color:#fff;border-color:#172033}.privacy-note{font-size:.84rem;color:#667085;margin-top:15px}.runtime-note{color:#b42318;font-weight:650;margin-top:10px;min-height:1.2em}
.result-list{display:grid;gap:0}.result-row{display:flex;justify-content:space-between;gap:16px;padding:13px 0;border-bottom:1px solid #eceef2}.result-row span{color:#667085}.result-row strong{text-align:right;word-break:break-word}.result-row[hidden]{display:none}
.content-grid{display:grid;grid-template-columns:1fr 320px;gap:22px;margin:26px 0 50px}.prose,.sidebar-card{background:#fff;border:1px solid #e2e5eb;border-radius:16px;padding:22px}.prose h2,.sidebar-card h2{margin:0 0 10px}.formula-box,.example-box{padding:14px;border-radius:12px;background:#f6f7f9;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;overflow:auto}.related-list{display:grid;gap:8px}.related-list a{padding:9px 0;border-bottom:1px solid #eef0f4}.site-footer{border-top:1px solid #e5e7eb;background:#fff;padding:30px 0;margin-top:45px;color:#657087}.footer-row{display:flex;gap:18px;justify-content:space-between;flex-wrap:wrap}.footer-links{display:flex;gap:14px;flex-wrap:wrap}.language-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px;margin:24px 0 50px}.language-grid a{padding:18px;border-radius:14px;background:#fff;border:1px solid #dfe3ea;font-weight:800;text-align:center}.info-page{padding:50px 0}.empty{color:#667085}.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:820px){.header-nav{display:none}.tool-grid,.category-grid{grid-template-columns:1fr 1fr}.tool-shell,.content-grid{grid-template-columns:1fr}.calc-fields{grid-template-columns:1fr}.language-grid{grid-template-columns:1fr 1fr}.hero{padding-top:32px}.result-row{display:block}.result-row strong{display:block;text-align:left;margin-top:4px}}
@media(max-width:520px){.tool-grid,.category-grid{grid-template-columns:1fr}.select-row{grid-template-columns:1fr}.actions{flex-direction:column}.btn{width:100%}.wrap{width:min(100% - 20px,1160px)}}

.mode-field{display:none}

.field-hint{font-size:.78rem;color:#778196;margin-top:5px}.select-field .input-wrap{background:#fbfcfe}.safety-banner.mains{background:#fff7ed;border-color:#fed7aa;color:#9a3412}.result-row strong{max-width:62%}