:root{--bg:#0d1117;--bg-raised:#151c26;--bg-card:#1a2330;--border:#2a3646;--text:#e8edf4;--text-dim:#93a4ba;--accent:#ff7a45;--accent-soft:rgba(255,122,69,0.14);--green:#3fb96f;--amber:#e0a82e;--red:#e05c5c;--radius:10px;--font-display:"Fraunces",Georgia,"Times New Roman",serif;--font-body:ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;--mono:ui-monospace,"SF Mono","Cascadia Code",Menlo,monospace}*{box-sizing:border-box;margin:0;padding:0}html{color-scheme:dark}body{background:var(--bg);color:var(--text);font-family:var(--font-body);font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}h1,h2,h3{font-family:var(--font-display);line-height:1.2}.btn,h1,h2,h3{font-weight:600}.btn{display:inline-flex;align-items:center;gap:8px;padding:9px 18px;border-radius:8px;border:1px solid transparent;background:var(--accent);color:#1a0f08;font-size:14px;cursor:pointer;font-family:var(--font-body);transition:filter .15s}.btn:hover{filter:brightness(1.1)}.btn:disabled{opacity:.5;cursor:default}.btn-secondary{background:transparent;color:var(--text);border-color:var(--border)}.btn-secondary:hover{border-color:var(--text-dim);filter:none}.btn-sm{padding:5px 12px;font-size:13px}.btn-danger{background:transparent;color:var(--red);border-color:var(--border)}.input,.textarea,select.input{width:100%;padding:10px 12px;border-radius:8px;border:1px solid var(--border);background:var(--bg-raised);color:var(--text);font-size:14px;font-family:var(--font-body)}.input:focus,.textarea:focus{outline:2px solid var(--accent-soft);border-color:var(--accent)}.textarea{min-height:110px;resize:vertical}.label{display:block;font-size:13px;font-weight:600;color:var(--text-dim);margin:14px 0 6px}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px}.badge{display:inline-block;padding:2px 9px;border-radius:99px;font-size:12px;font-weight:600}.badge-green{background:rgba(63,185,111,.15);color:var(--green)}.badge-amber{background:rgba(224,168,46,.15);color:var(--amber)}.badge-red{background:rgba(224,92,92,.15);color:var(--red)}.badge-dim{background:var(--bg-raised);color:var(--text-dim)}.badge-accent{background:var(--accent-soft);color:var(--accent)}.table{width:100%;border-collapse:collapse;font-size:14px}.table th{text-align:left;font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:var(--text-dim);padding:8px 12px}.table td,.table th{border-bottom:1px solid var(--border)}.table td{padding:10px 12px}.table tr:last-child td{border-bottom:none}.error-text{color:var(--red);font-size:13px;margin-top:8px}.muted{color:var(--text-dim)}.mono{font-family:var(--mono);font-size:13px}.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.auth-card{width:100%;max-width:400px}.auth-card h1{font-size:26px;margin-bottom:4px}.auth-card .sub{color:var(--text-dim);margin-bottom:12px}.mk-nav{display:flex;align-items:center;justify-content:space-between;max-width:1060px;margin:0 auto;padding:20px 24px}.mk-logo{font-family:var(--font-display);font-size:20px;font-weight:700}.mk-logo em{color:var(--accent);font-style:normal}.mk-hero{max-width:820px;margin:0 auto;padding:90px 24px 60px;text-align:center}.mk-hero h1{font-size:52px;margin-bottom:20px}.mk-hero h1 em{color:var(--accent);font-style:italic}.mk-hero p{font-size:18px;color:var(--text-dim);max-width:600px;margin:0 auto 32px}.mk-section{max-width:1060px;margin:0 auto;padding:50px 24px}.mk-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));grid-gap:18px;gap:18px;margin-top:28px}.mk-section h2{font-size:32px;text-align:center}.mk-card h3{font-size:18px;margin-bottom:8px}.mk-card p{color:var(--text-dim);font-size:14px}.price{font-size:36px;font-family:var(--font-display)}.price span{font-size:15px;color:var(--text-dim);font-family:var(--font-body)}.mk-footer{text-align:center;padding:40px;color:var(--text-dim);font-size:13px}.shell{display:flex;min-height:100vh}.sidebar{width:220px;flex-shrink:0;background:var(--bg-raised);border-right:1px solid var(--border);padding:20px 12px;display:flex;flex-direction:column;gap:2px;position:-webkit-sticky;position:sticky;top:0;height:100vh}.sidebar .mk-logo{padding:0 10px 18px;font-size:18px}.nav-link{padding:8px 10px;border-radius:7px;color:var(--text-dim);font-size:14px;font-weight:500}.nav-link:hover{background:var(--bg-card);color:var(--text)}.nav-link.active{background:var(--accent-soft);color:var(--accent)}.main,.sidebar .spacer{flex:1 1}.main{padding:28px 32px;max-width:1100px;min-width:0}.page-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;gap:16px;flex-wrap:wrap}.page-head h1{font-size:26px}.page-head .sub{color:var(--text-dim);font-size:14px;margin-top:2px}.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));grid-gap:14px;gap:14px;margin-bottom:24px}.stat{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:16px}.stat .v{font-size:28px;font-family:var(--font-display)}.stat .k{font-size:13px;color:var(--text-dim)}.editor-grid{display:grid;grid-template-columns:1fr 300px;grid-gap:20px;gap:20px;align-items:start}@media (max-width:900px){.editor-grid{grid-template-columns:1fr}}.editor-body{width:100%;min-height:480px;background:var(--bg-raised);border:1px solid var(--border);border-radius:var(--radius);color:var(--text);padding:16px;font-family:var(--mono);font-size:13.5px;line-height:1.65;resize:vertical}.score-ring{font-size:42px;font-family:var(--font-display);line-height:1}.check-row{display:flex;justify-content:space-between;align-items:baseline;gap:10px;padding:8px 0;border-bottom:1px solid var(--border);font-size:13px}.check-row:last-child{border-bottom:none}.check-row .hint{color:var(--text-dim);font-size:12px;margin-top:2px}pre.code-block{background:var(--bg-raised);border:1px solid var(--border);border-radius:var(--radius);padding:16px;overflow-x:auto;font-family:var(--mono);font-size:12.5px;line-height:1.55;white-space:pre-wrap;word-break:break-word}.steps{display:flex;gap:8px;margin-bottom:24px}.step-dot{flex:1 1;height:4px;border-radius:2px;background:var(--border)}.step-dot.on{background:var(--accent)}