@font-face{font-family:Manrope;font-style:normal;font-weight:400 800;font-display:swap;src:url(/fonts/manrope-latin.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Manrope;font-style:normal;font-weight:400 800;font-display:swap;src:url(/fonts/manrope-latin-ext.woff2)format("woff2");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C4,U+2113,U+2C60-2C7F,U+A720-A7FF}:root{--paper:#f4f6f3;--panel:#fff;--ink:#15202b;--ink-2:#3c4a58;--muted:#66737f;--line:#d8ded8;--line-2:#eceeea;--accent:#e4572e;--accent-ink:#b63f1b;--accent-soft:#fdece6;--teal:#1f7a8c;--teal-soft:#e3f1f4;--warn:#b7791f;--layer-1:#e4572e;--layer-2:#f08a5d;--layer-3:#f7b267;--layer-4:#1f7a8c;--layer-5:#5aa9b8;--layer-6:#9fc9d3;--layer-7:#c9d6cf;--layer-8:#8a9aa6;--radius:6px;--shadow:0 1px 0 #15202b0f, 0 8px 24px -16px #15202b40;--font:"Manrope", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--max:1120px;--gutter:16px;color-scheme:light}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--paper:#0f151b;--panel:#161e26;--ink:#e8edf1;--ink-2:#c3ccd4;--muted:#8f9ba6;--line:#2a3541;--line-2:#1f2932;--accent:#ff7a4d;--accent-ink:#ff9470;--accent-soft:#2a1a14;--teal:#5bc0d2;--teal-soft:#11262c;--warn:#e0a84a;--layer-7:#3a4752;--layer-8:#6b7a86;--shadow:0 1px 0 #0006, 0 8px 24px -16px #000c;color-scheme:dark}}:root[data-theme=dark]{--paper:#0f151b;--panel:#161e26;--ink:#e8edf1;--ink-2:#c3ccd4;--muted:#8f9ba6;--line:#2a3541;--line-2:#1f2932;--accent:#ff7a4d;--accent-ink:#ff9470;--accent-soft:#2a1a14;--teal:#5bc0d2;--teal-soft:#11262c;--warn:#e0a84a;--layer-7:#3a4752;--layer-8:#6b7a86;color-scheme:dark}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{transition:none!important;animation:none!important}}body{background:var(--paper);color:var(--ink);font-family:var(--font);font-feature-settings:"tnum" 1, "cv11" 1;-webkit-font-smoothing:antialiased;margin:0;font-size:16px;line-height:1.55}img,svg,canvas{max-width:100%;display:block}a{color:var(--teal);text-underline-offset:2px;text-decoration-thickness:1px}a:hover{color:var(--accent-ink)}:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:3px}h1,h2,h3,h4{letter-spacing:-.01em;margin:0 0 .5em;font-weight:800;line-height:1.15}h1{font-size:clamp(1.75rem,1.2rem + 2.2vw,2.6rem)}h2{margin-top:2.2em;font-size:clamp(1.3rem,1.1rem + 1vw,1.7rem)}h3{margin-top:1.6em;font-size:1.1rem;font-weight:700}p{max-width:68ch;margin:0 0 1em}p.lede{color:var(--ink-2);max-width:60ch;font-size:1.1rem}small,.small{color:var(--muted);font-size:.875rem}code{background:var(--line-2);border-radius:4px;padding:.1em .35em;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.9em}hr{border:0;border-top:1px solid var(--line);margin:2.5rem 0}table{border-collapse:collapse;width:100%;font-size:.95rem}th,td{text-align:left;border-bottom:1px solid var(--line);vertical-align:top;padding:.55rem .6rem}th{color:var(--ink-2);font-weight:700}td.num,th.num{text-align:right;font-variant-numeric:tabular-nums}.table-wrap{-webkit-overflow-scrolling:touch;margin:1rem 0 1.5rem;overflow-x:auto}ul,ol{padding-left:1.3rem}li{margin:.25rem 0}.wrap{max-width:var(--max);padding:0 var(--gutter);margin:0 auto}.site-header{border-bottom:1px solid var(--line);background:var(--paper);z-index:20;position:sticky;top:0}.site-header .wrap{align-items:center;gap:1.25rem;min-height:56px;display:flex}.brand{color:var(--ink);letter-spacing:-.02em;align-items:center;gap:.55rem;font-size:1.15rem;font-weight:800;text-decoration:none;display:inline-flex}.brand svg{width:26px;height:26px}.nav{gap:.25rem;margin-left:auto;display:flex}.nav a{color:var(--ink-2);border-radius:var(--radius);padding:.45rem .7rem;font-size:.95rem;font-weight:600;text-decoration:none}.nav a:hover,.nav a[aria-current=page]{background:var(--line-2);color:var(--ink)}@media (width<=640px){.nav a{padding:.4rem .5rem;font-size:.9rem}.nav .hide-sm{display:none}}main{padding:1.75rem 0 3rem}.page-head{margin-bottom:1.5rem}.crumbs{color:var(--muted);margin-bottom:.75rem;font-size:.875rem}.crumbs a{color:var(--muted)}.crumbs span{margin:0 .4rem}.tool{grid-template-columns:minmax(0,1fr) 360px;align-items:start;gap:2rem;display:grid}@media (width<=900px){.tool{grid-template-columns:1fr}.tool .result{order:-1;position:static}}.result{background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:10px;padding:1.25rem 1.25rem 1rem;position:sticky;top:72px}.result .label{color:var(--muted);font-size:.9rem;font-weight:600}.result .big{letter-spacing:-.03em;color:var(--ink);font-variant-numeric:tabular-nums;margin:.15rem 0 .35rem;font-size:clamp(2rem,1.6rem + 1.5vw,2.8rem);font-weight:800;line-height:1.05}.result .big .unit{color:var(--muted);letter-spacing:0;margin-left:.2em;font-size:.45em;font-weight:700}.result .sub{color:var(--ink-2);margin-bottom:.75rem;font-size:.95rem}.result dl{grid-template-columns:1fr auto;gap:.35rem 1rem;margin:.75rem 0 0;font-size:.95rem;display:grid}.result dt{color:var(--ink-2)}.result dd{text-align:right;font-variant-numeric:tabular-nums;overflow-wrap:anywhere;margin:0;font-weight:700}.result dd.total{border-top:1px solid var(--line);padding-top:.35rem}.result dt.total{border-top:1px solid var(--line);color:var(--ink);padding-top:.35rem;font-weight:700}.result .note{color:var(--muted);margin-top:.9rem;font-size:.8rem;line-height:1.4}.layers{flex-direction:column-reverse;gap:2px;height:72px;margin:.6rem 0 .4rem;display:flex}.layers span{border-radius:2px;min-height:3px;transition:flex-grow .25s;display:block}.legend{color:var(--ink-2);flex-wrap:wrap;gap:.3rem .9rem;margin-bottom:.5rem;font-size:.8rem;display:flex}.legend i{vertical-align:-1px;border-radius:2px;width:10px;height:10px;margin-right:.35rem;display:inline-block}.fields{grid-template-columns:repeat(2,minmax(0,1fr));gap:.9rem 1rem;display:grid}@media (width<=520px){.fields{grid-template-columns:1fr}}.fields .span-2{grid-column:1/-1}.fields>*,.field,.control,.tool>*{min-width:0}fieldset{border:0;min-width:0;margin:0 0 1.5rem;padding:0}legend{letter-spacing:-.01em;width:100%;margin-bottom:.75rem;padding:0;font-size:1.05rem;font-weight:800}legend small{margin-left:.5rem;font-weight:500}.field label{color:var(--ink-2);margin-bottom:.3rem;font-size:.875rem;font-weight:600;display:block}.field .hint{color:var(--muted);margin-top:.25rem;font-size:.78rem}.control{border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);align-items:stretch;display:flex;overflow:hidden}.control:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.control input,.control select{min-width:0;color:var(--ink);font:inherit;font-variant-numeric:tabular-nums;background:0 0;border:0;flex:1;padding:.55rem .7rem;font-size:1rem}.control input:focus,.control select:focus{outline:none}.control input[type=number]::-webkit-inner-spin-button{opacity:.5}.control .suffix{color:var(--muted);border-left:1px solid var(--line-2);background:var(--line-2);white-space:nowrap;align-items:center;padding:0 .7rem;font-size:.875rem;font-weight:600;display:flex}.control select{-webkit-appearance:none;appearance:none;background-image:linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%);background-position:calc(100% - 15px) 55%,calc(100% - 10px) 55%;background-repeat:no-repeat;background-size:5px 5px;padding-right:2rem}.seg{border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);display:inline-flex;overflow:hidden}.seg button{font:inherit;color:var(--ink-2);cursor:pointer;background:0 0;border:0;padding:.45rem .8rem;font-weight:600}.seg button[aria-pressed=true]{background:var(--ink);color:var(--paper)}details.more{border-top:1px solid var(--line);margin-top:.25rem;padding-top:.75rem}details.more summary{cursor:pointer;color:var(--teal);align-items:center;gap:.4rem;font-weight:700;list-style:none;display:inline-flex}details.more summary::-webkit-details-marker{display:none}details.more summary:before{content:"+";background:var(--teal-soft);border-radius:50%;place-items:center;width:18px;height:18px;font-weight:800;display:inline-grid}details.more[open] summary:before{content:"–"}details.more>div{margin-top:1rem}.btn{border:1px solid var(--ink);background:var(--ink);color:var(--paper);font:inherit;border-radius:var(--radius);cursor:pointer;align-items:center;gap:.5rem;padding:.6rem 1rem;font-weight:700;text-decoration:none;display:inline-flex}.btn:hover{background:var(--accent);border-color:var(--accent);color:#fff}.btn.ghost{color:var(--ink);background:0 0}.btn.ghost:hover{background:var(--line-2);color:var(--ink)}.btn.sm{padding:.35rem .7rem;font-size:.875rem}.actions{flex-wrap:wrap;gap:.5rem;margin-top:1rem;display:flex}.callout{border-left:3px solid var(--accent);background:var(--panel);border-radius:0 var(--radius) var(--radius) 0;margin:1rem 0;padding:.8rem 1rem;font-size:.95rem}.callout.teal{border-color:var(--teal)}.drop{border:2px dashed var(--line);text-align:center;background:var(--panel);cursor:pointer;border-radius:12px;padding:2rem 1rem;transition:border-color .15s,background .15s}.drop:hover,.drop.over{border-color:var(--accent);background:var(--accent-soft)}.drop strong{font-size:1.1rem;display:block}.viewer{aspect-ratio:4/3;background:radial-gradient(ellipse at center, var(--panel), var(--line-2));border:1px solid var(--line);border-radius:10px;position:relative;overflow:hidden}.viewer canvas{width:100%!important;height:100%!important}.explain{max-width:72ch;margin-top:3rem}.formula{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);white-space:pre;margin:1rem 0;padding:.9rem 1rem;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.9rem;line-height:1.6;overflow-x:auto}.faq details{border-bottom:1px solid var(--line);padding:.75rem 0}.faq summary{cursor:pointer;justify-content:space-between;gap:1rem;font-weight:700;list-style:none;display:flex}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:"+";color:var(--muted);font-weight:800}.faq details[open] summary:after{content:"–"}.faq details p{margin:.6rem 0 0}.grid{background:var(--line);border:1px solid var(--line);border-radius:10px;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:1px;margin:1.25rem 0 2rem;display:grid;overflow:hidden}.grid a.cell{background:var(--panel);color:var(--ink);min-height:108px;padding:1rem 1.1rem;text-decoration:none;display:block}.grid a.cell:hover{background:var(--accent-soft)}.grid a.cell strong{letter-spacing:-.01em;margin-bottom:.25rem;font-size:1.02rem;display:block}.grid a.cell span{color:var(--muted);font-size:.875rem;line-height:1.4;display:block}.grid a.cell em{color:var(--accent-ink);font-size:.875rem;font-style:normal;font-weight:700}.hero{padding:2rem 0 1.5rem}.hero h1{letter-spacing:-.035em;max-width:18ch;font-size:clamp(2.1rem,1.3rem + 3.4vw,3.6rem)}.hero p{color:var(--ink-2);max-width:54ch;font-size:1.15rem}.quick{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:.75rem;margin:1.5rem 0 .5rem;display:grid}.quick a{background:var(--panel);border:1px solid var(--line);color:var(--ink);border-radius:10px;padding:.9rem 1rem;text-decoration:none;display:block}.quick a:hover{border-color:var(--accent)}.quick a b{font-size:1.05rem;display:block}.quick a span{color:var(--muted);font-size:.875rem}.ad{justify-content:center;align-items:center;min-height:90px;margin:2rem 0;display:flex}.ad .ph{border:1px dashed var(--line);border-radius:var(--radius);width:100%;min-height:90px;color:var(--muted);place-items:center;font-size:.8rem;display:grid}.ad.side{min-height:250px;margin:1rem 0 0}.site-footer{border-top:1px solid var(--line);color:var(--muted);padding:2rem 0 3rem;font-size:.9rem}.site-footer .cols{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:1.5rem;margin-bottom:1.5rem;display:grid}.site-footer .ft-h{color:var(--ink);margin:0 0 .5rem;font-size:.95rem;font-weight:800}.site-footer ul{margin:0;padding:0;list-style:none}.site-footer li{margin:.2rem 0}.site-footer a{color:var(--muted);text-decoration:none}.site-footer a:hover{color:var(--accent-ink)}.related{margin-top:2.5rem}.related ul{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:.5rem;padding:0;list-style:none;display:grid}.related li a{border:1px solid var(--line);border-radius:var(--radius);color:var(--ink);background:var(--panel);padding:.7rem .9rem;font-size:.95rem;font-weight:600;text-decoration:none;display:block}.related li a:hover{border-color:var(--accent)}.spec{grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:.75rem;margin:1rem 0 1.5rem;display:grid}.spec div{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:.7rem .85rem}.spec b{letter-spacing:-.02em;font-size:1.15rem;display:block}.spec span{color:var(--muted);font-size:.8rem}.sr-only{clip:rect(0,0,0,0);border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.prose{max-width:72ch}.prose h2{margin-top:2em}.prose img{border-radius:8px}
