:root{color-scheme:dark;--bg:#0b0e0d;--panel:#111613;--text:#f0f3ec;--muted:#a5b29f;--line:#303a30;--lime:#c5fa42;font-family:Inter,Arial,"Microsoft YaHei",sans-serif}*{box-sizing:border-box}body{margin:0;color:var(--text);background:var(--bg)}[hidden]{display:none!important}a{color:inherit;text-decoration:none}header{max-width:1320px;padding:26px 36px;margin:auto;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;align-items:center;gap:15px}.brand>span{color:var(--lime);font-size:45px;font-weight:800}.brand b{font-size:24px;letter-spacing:1px}.brand small{display:block;font-size:10px;font-weight:400;margin-top:5px;letter-spacing:0}.header-note{font-size:12px;color:var(--muted)}main{max-width:1100px;margin:auto;padding:65px 36px;min-height:80vh}.eyebrow{font:11px/1.8 Consolas,monospace;letter-spacing:2px;color:var(--lime)}h1{font-size:clamp(42px,5vw,68px);line-height:1.2;font-weight:650;letter-spacing:-1px;margin:21px 0 25px}h1 span,h2 span{color:var(--lime)}.intro{font-size:15px;line-height:1.9;color:var(--muted);max-width:640px}#progress{list-style:none;padding:0;margin:44px 0 28px;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));border-bottom:1px solid var(--line);gap:15px}#progress li{font-size:12px;color:var(--muted);line-height:1.8;padding:15px 0;border-bottom:2px solid transparent}#progress li[aria-current]{color:var(--lime);border-color:var(--lime)}.panel{border:1px solid var(--line);background:var(--panel);padding:36px;min-width:0}h2{font-size:clamp(25px,3vw,34px);font-weight:550;margin:18px 0;line-height:1.5}h2:focus{outline:0}p{font-size:14px;line-height:1.9;color:var(--muted);overflow-wrap:anywhere}form{display:grid;gap:22px;margin-top:28px}label{display:grid;gap:10px;font-size:13px}input{min-width:0;width:100%;border:1px solid var(--line);border-radius:3px;background:var(--bg);color:var(--text);padding:14px;font:inherit;min-height:48px}a,button,input{touch-action:manipulation}button{font:inherit;cursor:pointer}button:disabled{opacity:.45;cursor:wait}a,button,input,summary{outline-offset:4px}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--lime)}.primary,.quiet{border-radius:3px;min-height:47px;display:inline-flex;align-items:center;justify-content:center;text-align:center;gap:15px;padding:13px 22px;font-size:13px;line-height:1.6}.primary{background:var(--lime);border:1px solid var(--lime);color:#16200d;font-weight:600}.primary:hover{background:#d7ff81}.quiet{background:0 0;border:1px solid var(--line);color:var(--text)}.quiet:hover{border-color:var(--lime);color:var(--lime)}form>.primary{justify-self:start}.actions{display:flex;align-items:center;gap:14px;justify-content:space-between;flex-wrap:wrap;margin-top:28px}.helper{font-size:12px;line-height:1.9}code{font-family:Consolas,monospace;color:var(--text);overflow-wrap:anywhere}details{border-top:1px solid var(--line);padding-top:22px;margin-top:30px}summary{font-size:13px;cursor:pointer}.checks{list-style:none;margin:28px 0;padding:0}.checks li{border-top:1px solid var(--line);padding:20px 0;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px 18px}.checks li:last-child{border-bottom:1px solid var(--line)}.checks b{font-weight:500;font-size:14px}.checks span{font-size:12px;color:var(--lime)}.checks p{grid-column:1/-1;font-size:12px;margin:0}.checks .failed span{color:#ffc26e}#feedback,#health-state{color:var(--lime);min-height:25px;font-size:14px;white-space:pre-line}footer{padding:26px 36px;max-width:1256px;margin:auto;border-top:1px solid var(--line);font:10px/1.8 monospace;letter-spacing:1px;color:var(--muted)}@media(max-width:720px){header{padding:20px}.brand b{font-size:21px}.header-note{font-size:11px}main{padding:38px 20px}.panel{padding:24px}#progress{grid-template-columns:repeat(2,minmax(0,1fr));gap:0 16px;margin-top:30px}#progress li{padding:10px 0;font-size:11px}.actions>*{flex:1}.actions{align-items:stretch}.primary,.quiet{padding:13px 15px}footer{padding:24px 20px}}@media(max-width:360px){.panel{padding:20px}.header-note{max-width:60px;line-height:1.8}h1{font-size:40px}.actions{flex-direction:column;align-items:stretch}}::selection{background:var(--lime);color:var(--bg)}input,select,textarea{accent-color:var(--lime);caret-color:currentColor}select option:checked{background:var(--lime);color:var(--bg)}