:root{--bg:#fafafa;--surface:#fff;--border:#e6e6ea;--text:#111;--muted:#666;--accent:#0a7ea4;--danger:#b00020;--warn:#b06200}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;font-size:14px;line-height:1.5}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}main{max-width:1200px;margin:0 auto;padding:16px}h1{font-size:22px;margin:0 0 12px}h2{font-size:16px;margin:16px 0 8px}table{width:100%;border-collapse:collapse;font-size:13px}td,th{text-align:left;padding:8px 10px;border-bottom:1px solid var(--border);vertical-align:top}th{font-weight:600;opacity:.7;font-size:12px}small{color:var(--muted)}input,select,textarea{padding:6px 8px}button,input,select,textarea{font:inherit;border:1px solid var(--border);border-radius:6px;background:var(--surface)}button{padding:6px 12px;cursor:pointer}button:hover:not(:disabled){background:#f1f3f5}button:disabled{opacity:.5;cursor:not-allowed}button.primary{background:var(--accent);color:#fff;border-color:transparent}button.primary:hover:not(:disabled){opacity:.9;background:var(--accent)}button.danger{color:var(--danger);border-color:var(--danger)}button.warn{color:var(--warn);border-color:var(--warn)}.row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.spacer{flex:1 1}.muted{color:var(--muted)}.pill{display:inline-block;padding:2px 8px;border-radius:10px;font-size:11px;font-weight:600;background:#f1f3f5;color:#444}.pill.warn{background:#fff4d6;color:var(--warn)}.pill.danger{background:#ffe2e6;color:var(--danger)}.pill.ok{background:#e3f0f5;color:var(--accent)}.nav{display:flex;gap:16px;align-items:center;padding:12px 16px;background:var(--surface);border-bottom:1px solid var(--border)}.nav .brand{font-weight:700}.nav a{color:var(--text)}.nav a.active{font-weight:600;color:var(--accent)}.card{background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:12px;margin-bottom:12px}.error{color:var(--danger)}.preview{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;background:#f7f7f8;padding:8px;border-radius:6px;white-space:pre-wrap;word-break:break-word}