:root{--color-bg: #0d1117;--color-surface: #161b22;--color-border: #30363d;--color-text: #e6edf3;--color-text-muted: #8b949e;--color-primary: #58a6ff;--color-success: #3fb950;--color-error: #f85149;--color-code-bg: #0d1117;--font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;--max-width: 960px}*{margin:0;padding:0;box-sizing:border-box}html{font-size:16px}body{font-family:var(--font-sans);background:var(--color-bg);color:var(--color-text);line-height:1.6}#root{min-height:100vh;display:flex;flex-direction:column}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}.nav{background:var(--color-surface);border-bottom:1px solid var(--color-border);padding:.75rem 1.5rem;display:flex;align-items:center;gap:2rem}.nav-brand{font-weight:700;font-size:1.25rem;color:var(--color-text)}.nav-links{display:flex;gap:1.5rem}.nav-links a{color:var(--color-text-muted);font-size:.9rem}.nav-links a:hover,.nav-links a.active{color:var(--color-text);text-decoration:none}.main{flex:1;max-width:var(--max-width);margin:0 auto;padding:2rem 1.5rem;width:100%}.hero{text-align:center;padding:3rem 0}.hero h1{font-size:2.5rem;margin-bottom:1rem}.hero p{color:var(--color-text-muted);font-size:1.1rem;max-width:600px;margin:0 auto 2rem}.hero-badges{display:flex;gap:.75rem;justify-content:center;flex-wrap:wrap}.badge{display:inline-block;padding:.25rem .75rem;border-radius:1rem;font-size:.8rem;font-weight:600;background:var(--color-surface);border:1px solid var(--color-border);color:var(--color-text-muted)}.badge-primary{border-color:var(--color-primary);color:var(--color-primary)}.section{margin-bottom:3rem}.section h2{font-size:1.5rem;margin-bottom:1rem;padding-bottom:.5rem;border-bottom:1px solid var(--color-border)}.section h3{font-size:1.15rem;margin-bottom:.75rem;margin-top:1.5rem}.section p{margin-bottom:1rem;color:var(--color-text-muted)}pre{background:var(--color-code-bg);border:1px solid var(--color-border);border-radius:6px;padding:1rem;overflow-x:auto;margin-bottom:1rem;font-family:var(--font-mono);font-size:.875rem;line-height:1.5}code{font-family:var(--font-mono);font-size:.875em;background:var(--color-surface);padding:.15em .4em;border-radius:3px}pre code{background:none;padding:0}table{width:100%;border-collapse:collapse;margin-bottom:1rem}th,td{text-align:left;padding:.5rem .75rem;border:1px solid var(--color-border)}th{background:var(--color-surface);font-weight:600}.validator{display:flex;flex-direction:column;gap:1rem}.validator textarea{width:100%;min-height:200px;background:var(--color-code-bg);color:var(--color-text);border:1px solid var(--color-border);border-radius:6px;padding:1rem;font-family:var(--font-mono);font-size:.875rem;resize:vertical}.validator textarea:focus{outline:none;border-color:var(--color-primary)}.validator-actions{display:flex;gap:.75rem}.btn{padding:.5rem 1.25rem;border-radius:6px;border:1px solid var(--color-border);background:var(--color-surface);color:var(--color-text);font-size:.9rem;cursor:pointer;font-weight:500}.btn:hover{background:var(--color-border)}.btn-primary{background:var(--color-primary);border-color:var(--color-primary);color:#000}.btn-primary:hover{opacity:.9}.result{padding:1rem;border-radius:6px;border:1px solid var(--color-border);font-family:var(--font-mono);font-size:.875rem;white-space:pre-wrap;word-break:break-all}.result-success{border-color:var(--color-success);color:var(--color-success)}.result-error{border-color:var(--color-error);color:var(--color-error)}.footer{text-align:center;padding:1.5rem;border-top:1px solid var(--color-border);color:var(--color-text-muted);font-size:.85rem}