:root{--orange: #FF4E00;--ink: #1a1a1a;--muted: #6b7280;--border: #e5e7eb;--bg: #f7f7f8}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,sans-serif;color:var(--ink);background:var(--bg)}.center{min-height:100vh;display:flex;align-items:center;justify-content:center}.app{max-width:860px;margin:0 auto;padding:0 16px 48px}header{display:flex;align-items:center;justify-content:space-between;padding:16px 0;border-bottom:1px solid var(--border);margin-bottom:24px}header .right{display:flex;align-items:center;gap:12px}main{display:flex;flex-direction:column;gap:20px}.card{background:#fff;border:1px solid var(--border);border-radius:12px;padding:24px;box-shadow:0 1px 2px #0000000a}.login{max-width:380px;text-align:center}h1{color:var(--orange);margin:0 0 4px}h2{margin:0 0 16px;font-size:18px}h3{font-size:14px;margin:16px 0 8px}.muted{color:var(--muted);font-size:14px}.error{color:#c0392b;font-size:14px}.ok{color:#15803d;font-size:14px}.badge{background:var(--orange);color:#fff;font-size:11px;font-weight:700;padding:2px 8px;border-radius:999px}.row{display:flex;gap:12px;margin-bottom:12px}.row.between{justify-content:space-between;align-items:center}input,textarea{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:8px;font:inherit;font-size:14px}textarea{resize:vertical}button{padding:9px 16px;border:1px solid var(--border);border-radius:8px;background:#fff;font:inherit;font-size:14px;cursor:pointer}button:hover:not(:disabled){border-color:var(--orange)}button:disabled{opacity:.5;cursor:not-allowed}.primary,.btnlink{background:var(--orange);color:#fff;border-color:var(--orange);font-weight:600;text-decoration:none;display:inline-block}.file{cursor:pointer;color:var(--orange);font-size:14px;font-weight:600}.result{margin-top:20px;padding-top:16px;border-top:1px solid var(--border)}.btnlink{margin:8px 0}.feedback{margin-top:16px}.feedback textarea{margin-bottom:8px}.versions .ver{display:flex;justify-content:space-between;align-items:center;padding:6px 0;font-size:13px;border-bottom:1px solid var(--border)}details{margin:12px 0}summary{cursor:pointer;color:var(--orange);font-weight:600;font-size:14px;margin-bottom:8px}ul{padding-left:20px;font-size:14px}li{margin-bottom:6px}