:root{--ink:#13231d;--muted:#63716b;--paper:#f7f5ef;--card:#fff;--line:#dfe3dc;--green:#147a50;--green-dark:#0d583a;--mint:#dff2e7;--lime:#d7ee79;--orange:#e46b36;--shadow:0 18px 45px rgba(22,48,37,.08);--radius:18px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:"DM Sans",system-ui,sans-serif;line-height:1.55}a{color:inherit;text-decoration:none}button,input,select{font:inherit}.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}.site-header{height:76px;background:rgba(247,245,239,.94);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(14px)}.nav-wrap{max-width:1240px;height:100%;margin:auto;padding:0 28px;display:flex;align-items:center;gap:42px}.brand{display:inline-flex;align-items:center;gap:11px;font-weight:700;font-size:19px;white-space:nowrap}.brand i{color:var(--green);font-style:normal}.brand-mark{width:36px;height:36px;border-radius:11px;background:var(--green);color:#fff;display:grid;place-items:center;font-family:"DM Mono",monospace;letter-spacing:-4px;padding-right:4px}.brand-mark span{color:var(--lime)}.nav-wrap nav{display:flex;gap:26px;margin-right:auto;color:#4e5d56;font-size:14px;font-weight:600}.nav-wrap nav a:hover,.nav-wrap nav a:focus-visible{color:var(--green)}.language select{min-width:132px;border:1px solid var(--line);border-radius:10px;background:#fff;padding:9px 30px 9px 12px;color:var(--ink)}.hero{padding:80px 28px 70px;text-align:center;background:radial-gradient(circle at 20% 10%,rgba(215,238,121,.22),transparent 28%),radial-gradient(circle at 80% 30%,rgba(74,176,126,.12),transparent 28%)}.eyebrow,.kicker{font-size:11px;letter-spacing:.15em;font-weight:700;color:var(--green)}.eyebrow{display:flex;justify-content:center;align-items:center;gap:9px}.eyebrow span{width:7px;height:7px;background:var(--orange);border-radius:50%}.hero h1{font-size:clamp(48px,7vw,88px);line-height:.98;letter-spacing:-.065em;margin:20px 0 24px}.hero h1 em{font-family:Georgia,serif;color:var(--green);font-weight:400}.hero>p{max-width:650px;margin:0 auto 34px;color:var(--muted);font-size:18px}.hero-search{max-width:690px;margin:auto;height:62px;background:#fff;border:1px solid #d7ded8;border-radius:16px;display:flex;align-items:center;padding:0 18px;box-shadow:var(--shadow)}.hero-search:focus-within{outline:3px solid rgba(20,122,80,.18);border-color:var(--green)}.hero-search svg{width:22px;fill:none;stroke:var(--green);stroke-width:2}.hero-search input{border:0;outline:0;flex:1;padding:0 16px;font-size:16px;background:transparent;min-width:0}.hero-search kbd{border:1px solid var(--line);border-bottom-width:2px;border-radius:6px;padding:1px 7px;color:#8a948f;background:#fafafa}.quick-links{display:flex;justify-content:center;gap:10px;margin-top:18px;font-size:13px;color:var(--muted)}.quick-links a{color:var(--green);font-weight:700}.catalog-wrap{max-width:1240px;margin:auto;padding:76px 28px 100px}.section-heading{display:flex;justify-content:space-between;align-items:end;margin-bottom:26px}.section-heading h2{font-size:36px;margin:7px 0 0;letter-spacing:-.035em}.section-heading p{color:var(--muted)}.section-heading strong{font-family:Georgia,serif;color:var(--green);font-size:27px}.filter-row{display:flex;gap:8px;overflow:auto;padding:2px 0 24px;scrollbar-width:none}.chip{border:1px solid var(--line);background:#fff;border-radius:99px;padding:8px 14px;color:#56635d;white-space:nowrap;cursor:pointer;font-size:13px;font-weight:600}.chip:hover,.chip:focus-visible,.chip.active{background:var(--ink);color:#fff;border-color:var(--ink)}.tool-group{padding:30px 0 14px;scroll-margin-top:90px}.group-title{display:flex;align-items:center;gap:12px;margin-bottom:14px}.group-title h3{font-size:19px;margin:0}.group-title>span:last-child{font-size:12px;color:var(--muted);margin-left:auto}.category-icon{width:34px;height:34px;border-radius:10px;background:var(--mint);display:grid;place-items:center;color:var(--green);font-family:"DM Mono",monospace;font-weight:700}.tool-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.tool-card{display:grid;grid-template-columns:38px 1fr 20px;align-items:center;gap:12px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;min-height:88px;transition:.18s ease}.tool-card:hover{transform:translateY(-2px);border-color:#aecdbc;box-shadow:0 12px 28px rgba(22,48,37,.07)}.tool-number{font-family:"DM Mono",monospace;font-size:11px;color:var(--green);background:var(--mint);border-radius:8px;padding:5px;text-align:center}.tool-card strong{display:block;font-size:14px;line-height:1.3}.tool-card small{display:block;color:var(--muted);margin-top:5px;font-family:"DM Mono",monospace;font-size:10px}.tool-card>b{color:#9ba69f;font-weight:500}.tool-layout{max-width:1180px;margin:0 auto;display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:44px;padding:42px 28px 90px}.breadcrumbs{display:flex;gap:8px;align-items:center;flex-wrap:wrap;font-size:12px;color:var(--muted);margin-bottom:36px}.breadcrumbs a:hover{color:var(--green)}.tool-heading{display:flex;gap:18px;align-items:flex-start;margin-bottom:28px}.tool-heading>.tool-number{width:46px;padding:8px 5px;margin-top:6px}.tool-heading p{margin:0;color:var(--green);font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.11em}.tool-heading h1{font-size:clamp(34px,5vw,56px);line-height:1.04;letter-spacing:-.05em;margin:6px 0 8px}.tool-heading div>span{color:var(--muted);font-family:"DM Mono",monospace;font-size:13px}.calculator{background:var(--ink);color:#fff;border-radius:22px;padding:28px;box-shadow:var(--shadow);min-height:270px}.calc-topline{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}.calc-topline h2{margin:0;font-size:16px}.precision{display:flex;align-items:center;gap:8px;color:#bdc9c4;font-size:12px}.precision select{background:#294038;color:#fff;border:1px solid #476158;border-radius:8px;padding:6px}.converter-grid{display:grid;grid-template-columns:1fr 48px 1fr;gap:12px;align-items:end}.field label{display:block;font-size:11px;color:#bdc9c4;text-transform:uppercase;letter-spacing:.08em;margin:0 0 7px}.input-wrap{background:#fff;border:2px solid transparent;border-radius:13px;overflow:hidden;display:flex}.input-wrap:focus-within{border-color:var(--lime)}.input-wrap input{width:100%;border:0;outline:0;padding:15px;color:var(--ink);font-family:"DM Mono",monospace;font-size:20px;min-width:0}.input-wrap select{border:0;border-left:1px solid var(--line);background:#f3f5f1;color:var(--ink);padding:0 10px;max-width:118px}.swap{width:44px;height:44px;border-radius:50%;border:1px solid #496057;background:#294038;color:var(--lime);cursor:pointer;margin-bottom:5px}.swap:hover,.swap:focus-visible{background:var(--green)}.result-note{border-top:1px solid #385047;margin-top:20px;padding-top:16px;color:#c1cec8;font-family:"DM Mono",monospace;font-size:12px}.multi-fields{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.multi-fields .wide{grid-column:1/-1}.primary-button,.calc-button{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:11px;background:var(--lime);color:var(--ink);font-weight:700;padding:13px 20px;cursor:pointer}.calc-button{margin-top:16px}.calc-output{margin-top:18px;background:#294038;border:1px solid #456057;border-radius:13px;padding:16px;font-family:"DM Mono",monospace;color:#fff;min-height:56px}.calc-output strong{color:var(--lime);font-size:22px}.content-section{padding:55px 0;border-bottom:1px solid var(--line)}.content-section h2{font-size:30px;letter-spacing:-.035em;margin:6px 0 22px}.content-section h3{margin:30px 0 14px}.formula-card{background:#edf4ef;border-left:4px solid var(--green);padding:20px 22px;border-radius:0 12px 12px 0;font-family:"DM Mono",monospace;color:var(--green-dark)}.steps-list{padding:0;list-style:none;counter-reset:steps}.steps-list li{counter-increment:steps;display:flex;gap:12px;margin:12px 0;color:#4f5d57}.steps-list li:before{content:counter(steps);min-width:26px;height:26px;background:var(--ink);color:#fff;border-radius:50%;display:grid;place-items:center;font-family:"DM Mono",monospace;font-size:11px}.reference-table table{border-collapse:collapse;width:100%;background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;display:table}.reference-table th,.reference-table td{text-align:left;border-bottom:1px solid var(--line);padding:12px 16px;font-family:"DM Mono",monospace;font-size:12px}.reference-table th{background:#edf4ef;color:var(--green-dark)}.definition-grid,.example-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.definition-grid>div,.example-grid>div{background:#fff;border:1px solid var(--line);border-radius:13px;padding:18px}.definition-grid h3,.example-grid h3{margin:0 0 7px;font-size:15px}.definition-grid p,.example-grid p{margin:0;color:var(--muted);font-size:13px}.example-grid{grid-template-columns:repeat(3,1fr)}.tool-aside{padding-top:118px}.aside-card,.trust-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;position:sticky;top:98px}.aside-card h2{font-size:20px;margin:6px 0 12px}.aside-card a{display:flex;justify-content:space-between;gap:8px;padding:13px 0;border-top:1px solid var(--line);font-size:13px;font-weight:600}.aside-card small{display:block;color:var(--muted);font-family:"DM Mono",monospace;font-size:9px;margin-top:3px}.aside-card a b{color:var(--green)}.trust-card{position:static;margin-top:14px;background:var(--mint);border:0}.trust-card p{font-size:12px;color:#4d675b;margin-bottom:0}.simple-page{max-width:800px;margin:auto;padding:120px 28px 200px}.simple-page h1{font-size:64px;letter-spacing:-.055em;margin:8px 0}.simple-page p{font-size:20px;color:var(--muted);max-width:660px;margin-bottom:30px}footer{border-top:1px solid var(--line);max-width:1180px;margin:auto;padding:44px 28px;display:grid;grid-template-columns:1fr auto;gap:10px;align-items:center}footer p{font-size:12px;color:var(--muted);margin:6px 0}footer nav{display:flex;gap:20px;font-size:12px;color:var(--muted)}footer>small{grid-column:1/-1;color:#919b96;font-size:10px;margin-top:18px}[hidden]{display:none!important}:focus-visible{outline:3px solid rgba(20,122,80,.3);outline-offset:2px}
@media(max-width:900px){.tool-grid{grid-template-columns:repeat(2,1fr)}.tool-layout{grid-template-columns:1fr}.tool-aside{padding-top:0}.aside-card{position:static}.example-grid{grid-template-columns:1fr}.nav-wrap nav{display:none}}
@media(max-width:620px){.site-header{height:66px}.nav-wrap{padding:0 16px}.brand{font-size:15px}.brand-mark{width:32px;height:32px}.language select{min-width:0;width:108px}.hero{padding:55px 18px}.hero h1{font-size:48px}.hero>p{font-size:15px}.catalog-wrap{padding:55px 16px}.section-heading{align-items:start}.section-heading h2{font-size:29px}.section-heading p{display:none}.tool-grid{grid-template-columns:1fr}.tool-layout{padding:28px 16px 65px}.tool-heading h1{font-size:38px}.tool-heading>.tool-number{display:none}.calculator{padding:20px 16px;border-radius:16px}.converter-grid{grid-template-columns:1fr}.swap{transform:rotate(90deg);margin:auto}.multi-fields{grid-template-columns:1fr}.multi-fields .wide{grid-column:auto}.definition-grid{grid-template-columns:1fr}.reference-table{overflow:auto}.reference-table table{min-width:480px}.content-section{padding:42px 0}.simple-page{padding:80px 18px 140px}.simple-page h1{font-size:44px}footer{grid-template-columns:1fr}footer nav{margin-top:15px;flex-wrap:wrap}}
[dir=rtl] .nav-wrap nav{margin-right:0;margin-left:auto}[dir=rtl] .formula-card{border-left:0;border-right:4px solid var(--green);border-radius:12px 0 0 12px}[dir=rtl] .reference-table th,[dir=rtl] .reference-table td{text-align:right}
body{font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}.brand-mark,.tool-card small,.tool-number,.tool-heading div>span,.input-wrap input,.result-note,.formula-card,.reference-table th,.reference-table td{font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace}
.tool-main,.content-section,.calculator,.converter-grid,.field{min-width:0}@media(max-width:620px){.calc-topline{align-items:flex-start;flex-wrap:wrap;gap:10px}.input-wrap select{max-width:42%;min-width:0}.reference-table{max-width:100%}}