:root{--bg:#f5f7f6;--paper:#fff;--ink:#172b29;--muted:#546863;--line:#d9e3df;--green:#087563;--deep:#113f36;--mint:#dbf6e9;--orange:#bd5c29;--mono:Consolas,'SFMono-Regular',monospace;--sans:Inter,'Segoe UI',Arial,sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 var(--sans)}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button,a,input,select,textarea,summary{outline-offset:4px}a:hover{color:var(--green)}button{cursor:pointer}button:disabled{opacity:.45;cursor:not-allowed}[hidden]{display:none!important}.wrap{max-width:1200px;margin:auto;padding:0 28px}.skip{position:fixed;left:16px;top:-70px;background:var(--deep);color:white;padding:10px;z-index:10}.skip:focus{top:10px}.header{background:#fff;border-bottom:1px solid var(--line)}.nav{min-height:83px;display:flex;align-items:center;justify-content:space-between;gap:22px}.brand{font-size:24px;font-weight:760;letter-spacing:-1px;display:flex;align-items:center;gap:11px}.brand-mark{font:700 20px var(--mono);background:var(--deep);color:#b9f3d9;padding:7px 8px;border-radius:8px;letter-spacing:-3px;padding-right:11px}.navlinks{display:flex;gap:29px;align-items:center;font-size:14px;font-weight:600}.navlinks [aria-current=page]{color:var(--green)}.nav-note{font:11px var(--mono);letter-spacing:1px;color:var(--muted);border-left:1px solid var(--line);padding-left:24px}.eyebrow{font:600 11px/1.5 var(--mono);letter-spacing:1.9px;color:var(--green);text-transform:uppercase}.hero{display:grid;grid-template-columns:1.05fr 1fr;gap:60px;align-items:center;padding-top:78px;padding-bottom:65px}.hero h1{font-size:clamp(40px,4.5vw,62px);line-height:1.07;letter-spacing:-2.8px;margin:22px 0}.hero h1 span{color:var(--green)}.hero p{font-size:17px;max-width:470px;color:var(--muted)}.hero-actions{display:flex;gap:20px;align-items:center;flex-wrap:wrap;margin-top:30px}.button{display:inline-flex;justify-content:center;align-items:center;gap:10px;background:var(--green);color:#fff;border:1px solid var(--green);border-radius:7px;padding:11px 18px;font-size:14px;font-weight:650;line-height:1.5}.button:hover{background:var(--deep);color:#fff}.secondary{background:#fff;color:var(--ink);border-color:var(--line)}.secondary:hover{background:#edf4f0;color:var(--ink)}.textlink{font-size:14px;font-weight:650;text-decoration:underline;text-underline-offset:5px}.hero-foot{display:flex;gap:18px;font:11px var(--mono);color:var(--muted);margin-top:25px}.demo{border:1px solid #c8d8d1;background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 18px 42px #19362a0c;transform:rotate(1deg)}.demo-top{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;background:#eff4f1;border-bottom:1px solid var(--line);font:12px var(--mono)}.dots{color:#8ca99d;letter-spacing:4px}.demo-body{padding:22px}.demo-label{font:10px var(--mono);color:var(--muted);letter-spacing:1px}.demo-source{background:#f2f5f3;padding:14px;border-radius:6px;font:12px/1.8 var(--mono);word-break:break-all;color:#536960;margin:10px 0 16px}.code{font:14px/1.9 var(--mono);white-space:pre-wrap;margin:12px 0}.code em{font-style:normal;color:var(--green)}.code b{font-weight:400;color:#a65024}.demo-bottom{padding:13px 20px;border-top:1px solid var(--line);font:11px var(--mono);color:var(--green);display:flex;justify-content:space-between}.trust{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;padding-top:22px;padding-bottom:22px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);font-size:13px}.trust strong{font-weight:650}.trust span{color:var(--muted);margin-left:8px}.section{padding-top:56px;padding-bottom:18px}.section-head{display:flex;align-items:end;justify-content:space-between;gap:25px;margin-bottom:26px}.section-head h2{font-size:29px;line-height:1.2;letter-spacing:-.8px;margin:8px 0 0}.section-head p{margin:8px 0 0;color:var(--muted);font-size:14px}.searchbox label{display:block;font:11px var(--mono);color:var(--muted);margin-bottom:6px}.searchbox input{width:260px;padding:10px 13px;border:1px solid var(--line);border-radius:6px;background:#fff;font-size:13px}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.tool-card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:25px;display:flex;flex-direction:column;transition:transform .15s,border-color .15s}.tool-card:hover{transform:translateY(-3px);border-color:#6fa992;color:var(--ink)}.card-top{display:flex;justify-content:space-between;align-items:center}.icon{display:grid;place-items:center;width:44px;height:44px;background:#ebf7f0;color:var(--green);font:600 20px var(--mono);border-radius:9px}.card-tag{font:9px var(--mono);color:var(--muted);letter-spacing:1px}.tool-card h3{font-size:18px;margin:20px 0 8px;letter-spacing:-.3px}.tool-card p{color:var(--muted);font-size:13px;line-height:1.75;margin:0 0 20px}.card-cta{margin-top:auto;font-size:12px;color:var(--green);font-weight:650;display:flex;justify-content:space-between}.search-count{font:11px var(--mono);color:var(--muted);margin:14px 0}.lesson-card{border-top:2px solid var(--ink);padding:23px 0;display:block}.lesson-card h3{font-size:20px;line-height:1.35;letter-spacing:-.3px;margin:12px 0}.lesson-card p{font-size:13px;color:var(--muted)}.lesson-card .time{font:11px var(--mono);color:var(--muted)}.note-band{background:var(--deep);color:#fff;border-radius:12px;margin-top:40px;margin-bottom:60px;padding:34px 38px;display:flex;gap:50px;align-items:center}.note-band h2{font-size:24px;line-height:1.3;margin:0 0 8px;letter-spacing:-.5px}.note-band p{color:#c4dcd3;font-size:14px;margin:0;max-width:730px}.note-band a{white-space:nowrap;color:#cff4e3}.footer{border-top:1px solid var(--line);padding:34px 0;background:#fff}.footer-row{display:flex;justify-content:space-between;gap:25px;align-items:start}.footer .brand{font-size:19px}.footer p{font-size:12px;color:var(--muted);max-width:330px}.footer nav{display:flex;gap:22px;flex-wrap:wrap;font-size:12px}.copyright{margin-top:23px;font:10px var(--mono);color:var(--muted)}.breadcrumbs{font-size:12px;color:var(--muted);padding-top:28px}.page-head{padding:30px 0 28px;max-width:800px}.page-head h1{font-size:clamp(32px,4vw,46px);letter-spacing:-1.6px;line-height:1.12;margin:11px 0 17px}.page-head p{color:var(--muted);max-width:710px;margin:0;font-size:16px}.workspace{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}.workspace-bar{display:flex;justify-content:space-between;gap:15px;align-items:center;padding:15px 20px;background:#eef4f0;border-bottom:1px solid var(--line)}.local-label{font:11px var(--mono);color:var(--green)}.toolbar{display:flex;gap:8px;flex-wrap:wrap;align-items:center}.small{padding:7px 11px;font-size:12px}.file-label{position:relative;overflow:hidden;cursor:pointer}.file-label input{position:absolute;inset:0;opacity:0;width:100%;cursor:pointer}.file-label:focus-within{outline:2px solid var(--green)}.options{display:flex;gap:18px;flex-wrap:wrap;padding:16px 20px;border-bottom:1px solid var(--line);background:#fafcfb}.options label{font-size:12px;display:flex;align-items:center;gap:7px}.options select,.options input[type=text]{border:1px solid #bccfc5;padding:6px 8px;border-radius:5px;min-width:0;max-width:230px;background:#fff;font-size:12px}.options input[type=checkbox]{accent-color:var(--green)}.editors{display:grid;grid-template-columns:1fr 1fr}.editor{min-width:0}.editor+.editor{border-left:1px solid var(--line)}.editor-head{padding:12px 20px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;font:11px var(--mono);color:var(--muted)}.editor textarea{display:block;width:100%;height:350px;resize:vertical;border:0;background:#fff;font:13px/1.8 var(--mono);padding:20px;color:#234d3c;tab-size:2;border-radius:0;white-space:pre;overflow:auto}.editor textarea:focus{outline:2px solid var(--green);outline-offset:-2px}.editor textarea[readonly]{background:#fafcfb}.compare-result{border-top:1px solid var(--line)}.compare-result textarea{height:200px}.run-row{padding:16px 20px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:15px}.hint{font-size:12px;color:var(--muted)}.status{padding:12px 20px;margin:0;background:#f4f7f5;color:var(--muted);font-size:12px;border-top:1px solid var(--line);overflow-wrap:anywhere}.status.success{background:#eaf7f0;color:#16634c}.status.error{background:#fff0e9;color:#983d1f}.result-summary{font-size:12px;color:var(--muted);padding:13px 20px;margin:0;border-top:1px solid var(--line)}.tree-wrap{padding:0 20px 15px}.tree-wrap>summary{font-size:12px;cursor:pointer;color:var(--green)}#tree{padding:12px 0;font:12px/1.8 var(--mono);overflow-wrap:anywhere;max-height:400px;overflow:auto}#tree details{padding-left:16px}#tree p{margin:1px 0 1px 16px}#tree summary{cursor:pointer}.tool-details{display:grid;grid-template-columns:1.3fr 1fr;gap:55px;margin:38px 0 50px}.tool-details h2{font-size:22px;letter-spacing:-.5px}.tool-details p,.tool-details li{font-size:14px;color:var(--muted)}.help-card{background:#eaf3ee;border:1px solid var(--line);border-radius:9px;padding:24px;height:fit-content}.help-card h3{font-size:20px;line-height:1.4;margin:12px 0}.article-grid{display:grid;grid-template-columns:minmax(0,760px) 260px;gap:64px;padding-bottom:60px}.prose{max-width:760px;overflow-wrap:anywhere}.prose p,.prose li{font-size:15px;line-height:1.9;color:#354d46}.prose h2{font-size:25px;letter-spacing:-.6px;line-height:1.3;margin:36px 0 12px}.prose h3{font-size:18px}.prose a{color:var(--green);text-decoration:underline;text-underline-offset:3px}.prose code{font:12px var(--mono);background:#eaf1ed;padding:2px 4px;border-radius:3px}.prose pre{background:#142f27;color:#dbf3e5;padding:22px;border-radius:8px;overflow:auto;max-width:100%;font:12px/1.8 var(--mono)}.prose pre code{background:none;color:inherit;padding:0;font-size:12px}.prose .source{border-top:1px solid var(--line);padding-top:20px;font-size:12px}.article-meta{font:11px var(--mono);color:var(--muted);margin-bottom:25px}.article-grid aside{padding-top:15px}.article-grid aside .help-card{position:sticky;top:25px}.legal{padding-bottom:70px}.empty{padding:80px 0}.tool-nav{display:flex;gap:9px;flex-wrap:wrap;margin:22px 0 38px}.tool-nav a{font-size:12px;padding:6px 12px;border:1px solid var(--line);border-radius:5px;background:#fff}.tool-nav a[aria-current=page]{background:var(--deep);color:#fff}.notice{padding:14px 18px;background:#fff1dd;border-left:3px solid var(--orange);font-size:13px}.verify-note{font-size:12px;border-left:3px solid var(--green);padding:12px 17px;background:#eaf4ee;margin-bottom:25px}
.article-grid>*{min-width:0}
@media(max-width:900px){.nav-note{display:none}.hero{gap:30px;padding-top:48px}.hero h1{font-size:44px}.grid{grid-template-columns:repeat(2,1fr)}.trust{font-size:12px;gap:16px}.trust span{display:block;margin-left:0}.article-grid{grid-template-columns:minmax(0,1fr) 220px;gap:30px}.tool-details{gap:30px}}
@media(max-width:640px){.wrap{padding-left:19px;padding-right:19px}.nav{min-height:73px;gap:15px}.brand{font-size:21px}.brand-mark{font-size:17px}.navlinks{gap:15px;font-size:12px}.hero{grid-template-columns:1fr;padding-top:42px;padding-bottom:40px;gap:35px}.hero h1{font-size:46px;letter-spacing:-2px}.hero p{font-size:16px}.demo{transform:none}.trust{grid-template-columns:1fr;gap:10px}.trust span{display:inline;margin-left:8px}.section{padding-top:38px}.section-head{display:block}.searchbox{margin-top:20px}.searchbox input{width:100%}.grid{grid-template-columns:1fr}.tool-card{padding:22px}.note-band{margin-top:25px;margin-bottom:38px;padding:25px;display:block}.note-band a{display:inline-block;margin-top:18px}.footer-row{display:block}.footer nav{margin-top:24px;gap:17px}.editors{grid-template-columns:1fr}.editor+.editor{border-left:0;border-top:1px solid var(--line)}.editor textarea{height:260px}.workspace-bar{align-items:start;flex-direction:column;padding:13px}.options{padding:13px;gap:12px}.options label{flex-wrap:wrap}.run-row{flex-wrap:wrap;padding:13px}.run-row .hint{display:none}.page-head h1{font-size:34px;letter-spacing:-1px}.page-head{padding-top:25px}.tool-details,.article-grid{grid-template-columns:1fr;gap:15px}.article-grid aside{padding-top:0}.article-grid aside .help-card{position:static}.prose pre{padding:16px}.hero-foot{gap:12px;font-size:10px}.tool-nav{gap:6px}.tool-nav a{font-size:11px;padding:6px 8px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.tool-card{transition:none}}