:root{--bg:#f6f7fb;--surface:#fff;--text:#172033;--muted:#5b6478;--border:#e2e6ef;--primary:#2563eb;--primary-ink:#fff;--accent-soft:#eef3ff;--good:#0f8a5f;--bad:#c2362b;--series-0:#2563eb;--series-1:#f59e0b;--radius:12px;--shadow:0 1px 2px #1018280f, 0 4px 16px #1018280d;color-scheme:light}@media (prefers-color-scheme:dark){:root{--bg:#0f1420;--surface:#171e2d;--text:#e7ebf3;--muted:#9aa4b8;--border:#2a3346;--primary:#5b8cff;--primary-ink:#0b1020;--accent-soft:#1d2840;--good:#34c48b;--bad:#ff7b6e;--series-0:#5b8cff;--series-1:#fbbf24;--shadow:none;color-scheme:dark}}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{background:var(--bg);color:var(--text);margin:0;font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif}a{color:var(--primary)}h1{margin:.4rem 0;font-size:clamp(1.6rem,4vw,2.2rem);line-height:1.2}h2{margin:1.6rem 0 .6rem;font-size:1.3rem}h3{margin:1.2rem 0 .4rem;font-size:1.05rem}.container{max-width:1100px;margin:0 auto;padding:0 16px}.muted{color:var(--muted)}.small{font-size:.875rem}.site-header{background:var(--surface);border-bottom:1px solid var(--border);z-index:10;position:sticky;top:0}.header-inner{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;min-height:56px;display:flex}.brand{color:var(--text);white-space:nowrap;font-size:1.15rem;font-weight:700;text-decoration:none}.main-nav{flex-wrap:wrap;gap:.25rem;display:flex}.nav-group{position:relative}.nav-group summary{cursor:pointer;border-radius:8px;padding:.4rem .7rem;font-size:.95rem;list-style:none}.nav-group summary::-webkit-details-marker{display:none}.nav-group[open] summary,.nav-group summary:hover{background:var(--accent-soft)}.nav-menu{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);min-width:230px;box-shadow:var(--shadow);z-index:20;padding:.4rem;display:grid;position:absolute;top:110%;right:0}.nav-menu a{color:var(--text);border-radius:8px;padding:.45rem .6rem;text-decoration:none}.nav-menu a:hover{background:var(--accent-soft)}.site-footer{border-top:1px solid var(--border);background:var(--surface);margin-top:3rem;padding:2rem 0 1.5rem}.footer-inner{flex-wrap:wrap;justify-content:space-between;gap:2rem;display:flex}.footer-inner p{max-width:520px}.site-footer nav{flex-wrap:wrap;align-items:flex-start;gap:1rem;display:flex}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);margin:1rem 0;padding:1.25rem}.tool-cards{grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:.75rem;display:grid}.tool-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);color:var(--text);flex-direction:column;gap:.25rem;padding:1rem;text-decoration:none;transition:border-color .15s,transform .15s;display:flex}.tool-card:hover{border-color:var(--primary);transform:translateY(-1px)}.tool-icon{font-size:1.6rem}.hero{text-align:center;padding:2.5rem 0 1rem}.hero .lead{margin:0 auto 1.2rem}.search{max-width:520px;margin:0 auto;display:block}.lead{color:var(--muted);max-width:760px;font-size:1.05rem}.breadcrumb{color:var(--muted);margin-top:1rem;font-size:.85rem}.breadcrumb a{color:var(--muted)}.tool-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:start;gap:1rem;display:grid}.tool-grid .card{margin:0}@media (width<=820px){.tool-grid{grid-template-columns:1fr}}.field{flex-direction:column;gap:.3rem;min-width:0;margin-bottom:.9rem;display:flex}.field-label{font-size:.9rem;font-weight:600}.input-wrap{border:1px solid var(--border);background:var(--bg);border-radius:10px;align-items:stretch;display:flex;overflow:hidden}.input-wrap:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px #2563eb2e}.input{width:100%;min-width:0;font:inherit;color:inherit;background:0 0;border:0;outline:none;padding:.6rem .7rem}.search.input,textarea.input{border:1px solid var(--border);background:var(--surface);border-radius:10px}select.input{cursor:pointer}select.input option,select.input optgroup{background:var(--surface);color:var(--text)}.affix{color:var(--muted);background:var(--accent-soft);white-space:nowrap;align-items:center;padding:0 .65rem;font-size:.9rem;display:flex}.hint{color:var(--muted);font-size:.8rem}.field-error,.field-validation-error{color:var(--bad);font-size:.85rem}.input-validation-error{color:var(--bad)}.row{grid-template-columns:repeat(auto-fit,minmax(140px,1fr));align-items:end;gap:0 .75rem;display:grid}.row>.btn{width:100%}details.more{margin:.25rem 0 1rem}details.more>summary{cursor:pointer;color:var(--primary);margin-bottom:.75rem;font-weight:600}.btn{background:var(--primary);color:var(--primary-ink);font:inherit;cursor:pointer;border:0;border-radius:10px;margin-bottom:.9rem;padding:.7rem 1.2rem;font-weight:600;display:inline-block}.btn:hover{filter:brightness(1.05)}.btn-secondary{background:var(--accent-soft);color:var(--primary)}.btn-link{color:var(--primary);cursor:pointer;font:inherit;background:0 0;border:0;margin-top:.75rem;padding:0}.hp{width:1px;height:1px;position:absolute;left:-9999px;overflow:hidden}[hidden]{display:none!important}.calc-result{background:linear-gradient(180deg, var(--accent-soft), var(--surface) 140px)}.result-label{color:var(--muted);margin:0;font-weight:600}.result-big{overflow-wrap:anywhere;margin:.2rem 0;font-size:clamp(1.9rem,5vw,2.6rem);font-weight:800;line-height:1.15}.result-sub{margin:0 0 .75rem;font-size:1.1rem;font-weight:600}.stats{grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:.6rem;margin:1rem 0 0;display:grid}.stats>div{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:.6rem .75rem}.stats dt{color:var(--muted);font-size:.8rem}.stats dd{margin:0;font-weight:700}.stats .good dd{color:var(--good)}.breakdown{border-collapse:collapse;width:100%;margin-top:.75rem}.breakdown td,.breakdown th{border-bottom:1px dashed var(--border);text-align:left;padding:.4rem 0}.breakdown td:last-child,.breakdown th:last-child{text-align:right;font-variant-numeric:tabular-nums}.breakdown tr.highlight td{color:var(--primary);font-weight:700}.steps{padding-left:1.2rem}.formula{background:var(--accent-soft);border-radius:8px;padding:.6rem .8rem;font-family:ui-monospace,Cascadia Code,Consolas,monospace;overflow-x:auto}.error-box{color:var(--bad);background:#c2362b1a;border-radius:10px;padding:.75rem 1rem}.success-box{color:var(--good);background:#0f8a5f1f;border-radius:10px;padding:.75rem 1rem}.bmi-gauge{background:linear-gradient(90deg,#60a5fa 0 14%,#22c55e 14% 40%,#f59e0b 40% 60%,#ef4444 60% 100%);border-radius:5px;height:10px;margin:.75rem 0;position:relative}.bmi-gauge span{background:var(--text);border-radius:2px;width:4px;height:20px;position:absolute;top:-5px;transform:translate(-2px)}.table-wrap{overflow-x:auto}table.data{border-collapse:collapse;font-variant-numeric:tabular-nums;width:100%;font-size:.95rem}table.data th,table.data td{border-bottom:1px solid var(--border);text-align:right;white-space:nowrap;padding:.5rem .6rem}table.data th:first-child,table.data td:first-child{text-align:left}table.data thead th{background:var(--accent-soft);font-size:.85rem}details.monthly summary{cursor:pointer;color:var(--primary);margin:1rem 0 .5rem;font-weight:600}details.monthly .table-wrap{max-height:480px;overflow-y:auto}.chart{margin:0 0 1rem}.chart figcaption{margin-bottom:.5rem;font-weight:600}.chart svg{width:100%;height:220px;display:block}.chart .series-0{fill:var(--series-0)}.chart .series-1{fill:var(--series-1)}.axis-label{fill:var(--muted);font-size:11px}.legend{color:var(--muted);gap:1rem;font-size:.85rem;display:flex}.swatch{border-radius:2px;width:10px;height:10px;margin-right:.35rem;display:inline-block}.swatch.series-0{background:var(--series-0)}.swatch.series-1{background:var(--series-1)}.prose{max-width:820px}.prose p,.prose li{color:var(--text)}.page{padding:1rem 0}.faq details{border-bottom:1px solid var(--border);padding:.75rem 0}.faq summary{cursor:pointer;font-weight:600}.chips{flex-wrap:wrap;gap:.5rem;display:flex}.chips a{background:var(--surface);border:1px solid var(--border);border-radius:999px;padding:.35rem .7rem;font-size:.9rem;text-decoration:none}.chips a:hover{border-color:var(--primary)}.related{margin-top:2rem}.ad-slot{text-align:center;min-height:100px;margin:1.25rem 0}.ad-placeholder{border:2px dashed var(--border);border-radius:var(--radius);color:var(--muted);justify-content:center;align-items:center;font-size:.85rem;display:flex}.row.actions{margin-top:.25rem}.btn-link{display:block}.result-label{overflow-wrap:anywhere}.visually-hidden{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;overflow:hidden;position:absolute!important}.skip-link{background:var(--primary);color:var(--primary-ink);z-index:100;padding:.5rem 1rem;position:absolute;top:0;left:-9999px}.skip-link:focus{left:1rem}.answer{background:var(--accent-soft);border-left:4px solid var(--primary);border-radius:8px;max-width:820px;padding:.7rem 1rem}.updated{margin-top:-.25rem}.faq summary h3{margin:0;font-size:1rem;display:inline}.footer-tools{grid-template-columns:repeat(2,minmax(0,auto));gap:.3rem 1.2rem;display:grid!important}.tool-card .muted{text-transform:capitalize}:root{--radius:14px;--header-h:60px}body{font-size:16.5px}h1{letter-spacing:-.02em}.site-header{backdrop-filter:saturate(1.4)blur(8px);background:color-mix(in srgb, var(--surface) 88%, transparent)}.header-inner{min-height:var(--header-h);flex-wrap:nowrap}.brand{align-items:center;gap:.5rem;display:inline-flex}.brand img{display:block}.cat-nav{gap:.15rem;margin-left:auto;display:flex}.cat-nav a{color:var(--text);white-space:nowrap;border-radius:8px;padding:.4rem .65rem;font-size:.93rem;text-decoration:none}.cat-nav a:hover{background:var(--accent-soft);color:var(--primary)}.search-btn{border:1px solid var(--border);background:var(--bg);color:var(--muted);font:inherit;cursor:pointer;white-space:nowrap;border-radius:10px;align-items:center;gap:.5rem;padding:.45rem .7rem;font-size:.9rem;display:inline-flex}.search-btn:hover{border-color:var(--primary);color:var(--text)}.search-btn kbd{border:1px solid var(--border);background:var(--surface);border-radius:5px;padding:0 .35rem;font:600 .75rem ui-monospace,monospace}.mobile-menu{display:none;position:relative}.mobile-menu summary{cursor:pointer;border-radius:8px;padding:.2rem .5rem;font-size:1.4rem;list-style:none}.mobile-menu summary::-webkit-details-marker{display:none}.mobile-menu nav{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);z-index:30;min-width:220px;padding:.4rem;display:grid;position:absolute;top:120%;right:0}.mobile-menu nav a{color:var(--text);border-radius:8px;padding:.55rem .7rem;text-decoration:none}@media (width<=1080px){.cat-nav{display:none}.search-btn{margin-left:auto}.mobile-menu{display:block}}@media (width<=520px){.search-label,.search-btn kbd{display:none}}.search-dialog{border:1px solid var(--border);background:var(--surface);width:min(640px,100vw - 32px);color:var(--text);border-radius:16px;margin:10vh auto auto;padding:.75rem;box-shadow:0 20px 60px #0000004d}.search-dialog::backdrop{backdrop-filter:blur(2px);background:#0f14208c}.search-dialog input{width:100%;font:inherit;border:1px solid var(--border);background:var(--bg);color:var(--text);border-radius:12px;outline:none;padding:.8rem 1rem;font-size:1.1rem}.search-dialog input:focus{border-color:var(--primary)}.search-dialog ul{max-height:55vh;margin:.5rem 0;padding:0;list-style:none;overflow-y:auto}.search-dialog li a{color:var(--text);border-radius:10px;grid-template-columns:2rem 1fr auto;align-items:center;gap:.5rem;padding:.6rem .7rem;text-decoration:none;display:grid}.search-dialog li a.active,.search-dialog li a:hover{background:var(--accent-soft)}.search-dialog li small{color:var(--muted)}.search-dialog li.empty{color:var(--muted);padding:1rem}.hero{padding:3rem 0 1.5rem}.hero h1{font-size:clamp(2rem,5vw,3rem)}.hero-search{max-width:620px;box-shadow:var(--shadow);border-radius:14px;margin:0 auto;display:flex}.hero-search input{font:inherit;border:1px solid var(--border);background:var(--surface);color:var(--text);border-radius:14px;flex:1;padding:.95rem 1.1rem;font-size:1.1rem}.hero-stats{color:var(--muted);flex-wrap:wrap;justify-content:center;gap:1.5rem;margin-top:1rem;font-size:.9rem;display:flex}.hero-stats strong{color:var(--text)}.section-head{justify-content:space-between;align-items:baseline;gap:1rem;display:flex}.section-head a{white-space:nowrap;font-size:.95rem}.tool-cards{grid-template-columns:repeat(auto-fill,minmax(220px,1fr))}.tool-card{box-shadow:var(--shadow)}.tool-card:hover{box-shadow:0 6px 24px #2563eb1f}.tool-card.big{min-height:0}.tool-card .muted{-webkit-line-clamp:2;text-transform:none;-webkit-box-orient:vertical;display:-webkit-box;overflow:hidden}.cat-tiles{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:.75rem;display:grid}.cat-tile{border-radius:var(--radius);background:var(--surface);border:1px solid var(--border);color:var(--text);flex-direction:column;gap:.3rem;padding:1rem;text-decoration:none;display:flex}.cat-tile span:first-child{font-size:1.6rem}.cat-tile:hover{border-color:var(--primary)}@media (width>=821px){.calc-result{top:calc(var(--header-h) + 12px);position:sticky}}.btn-ghost{color:var(--muted);border:1px solid var(--border);background:0 0}.btn-ghost:hover{color:var(--text)}.row.actions{grid-template-columns:repeat(auto-fit,minmax(110px,max-content))}.result-actions{gap:1.25rem;margin-top:.75rem;display:flex}.result-actions .btn-link{margin:0;display:inline}.field-wide textarea.input{resize:vertical;min-height:140px;font-family:inherit}textarea.input{border:0}.input:focus-visible,.btn:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid color-mix(in srgb, var(--primary) 45%, transparent);outline-offset:2px}.footer-grid{grid-template-columns:1.4fr repeat(6,1fr);gap:1.5rem;display:grid}.footer-grid nav{flex-direction:column;gap:.35rem;font-size:.9rem;display:flex}.footer-grid nav a{color:var(--muted);text-decoration:none}.footer-grid nav a:hover{color:var(--primary)}.footer-grid .footer-head{color:var(--text);font-weight:700}.footer-bottom{border-top:1px solid var(--border);flex-wrap:wrap;justify-content:space-between;gap:1rem;margin-top:1.5rem;padding-top:1rem;display:flex}.footer-bottom nav{flex-wrap:wrap;gap:1rem;display:flex}.footer-bottom a{color:var(--muted)}@media (width<=900px){.footer-grid{grid-template-columns:repeat(2,1fr)}.footer-grid>div:first-child{grid-column:1/-1}}.ask{max-width:720px;margin:1.5rem auto 0}.ask form{gap:.5rem;display:flex}.ask input{font:inherit;border:1px solid var(--border);background:var(--surface);color:var(--text);border-radius:12px;flex:1;padding:.8rem 1rem}.ask-answer{text-align:left;margin-top:.75rem}.ask-answer .result-big{font-size:1.6rem}.embed-box summary{cursor:pointer}.embed-code{background:var(--bg);width:100%;color:var(--text);border:1px solid var(--border);resize:vertical;border-radius:8px;margin:.5rem 0;padding:.6rem;font:12px/1.45 ui-monospace,Consolas,monospace}body.embed{background:0 0;padding:0}.embed-tool{max-width:none;margin:0;padding:8px}.embed-title{margin:0 0 .75rem;font-size:1.15rem}.embed-credit{text-align:right;margin:.5rem 4px 0}