:root{--bg: #0d1117;--surface: #161b22;--border: #30363d;--text: #e6edf3;--muted: #8b949e;--accent: #2f81f7;--danger: #f85149}@media(prefers-color-scheme:light){:root{--bg: #ffffff;--surface: #f6f8fa;--border: #d1d9e0;--text: #1f2328;--muted: #59636e;--accent: #0969da;--danger: #cf222e}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;line-height:1.5}main{max-width:34rem;margin:0 auto;padding:3rem 1rem}h1{margin:0;font-size:1.75rem}.subtitle{margin:.25rem 0 2rem;color:var(--muted)}form{display:flex;gap:.5rem;margin-bottom:1.5rem}input{flex:1;min-width:0;padding:.6rem .75rem;font-size:1rem;color:var(--text);background:var(--surface);border:1px solid var(--border);border-radius:6px}input:focus-visible{outline:2px solid var(--accent);outline-offset:-1px}button{padding:.6rem 1.25rem;font-size:1rem;font-weight:500;color:#fff;background:var(--accent);border:none;border-radius:6px;cursor:pointer}button:disabled{opacity:.6;cursor:default}.error{padding:.75rem 1rem;color:var(--danger);background:color-mix(in srgb,var(--danger) 10%,transparent);border:1px solid color-mix(in srgb,var(--danger) 35%,transparent);border-radius:6px}.card{padding:1.5rem;text-align:center;background:var(--surface);border:1px solid var(--border);border-radius:12px}.avatar{width:96px;height:96px;border-radius:50%;border:1px solid var(--border)}.card h2{margin:.75rem 0 .125rem;font-size:1.375rem}.handle{color:var(--accent);text-decoration:none}.handle:hover{text-decoration:underline}.bio{margin:1rem 0 0;color:var(--muted)}.meta{display:flex;flex-wrap:wrap;justify-content:center;gap:.5rem 1.5rem;margin:1rem 0 0;font-size:.875rem}.meta div{display:flex;gap:.375rem}.meta dt{color:var(--muted)}.meta dd{margin:0}.stats{display:grid;grid-template-columns:repeat(3,1fr);margin-top:1.5rem;padding-top:1.25rem;border-top:1px solid var(--border)}.stat{display:flex;flex-direction:column}.stat-value{font-size:1.25rem;font-weight:600}.stat-label{font-size:.8125rem;color:var(--muted)}