:root{--ink: #0f172a;--muted: #64748b;--faint: #94a3b8;--line: #e2e8f0;--bg: #f8fafc;--accent: #2563eb;--accent-strong: #1d4ed8;--danger: #dc2626;--ok: #15803d;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Noto Sans KR,Apple SD Gothic Neo,sans-serif}*{box-sizing:border-box}html,body,#app{margin:0;min-height:100%;color:var(--ink);background:var(--bg)}a{color:var(--accent);text-decoration:none}a:hover{color:var(--accent-strong)}button,input,select,textarea{font:inherit}input:focus{outline:none;border-color:var(--accent)!important;box-shadow:0 0 0 3px #2563eb26}.field{width:100%;border:1px solid var(--line);border-radius:10px;padding:15px 16px;font-size:16px;color:var(--ink);background:#fff}.btn{display:flex;align-items:center;justify-content:center;width:100%;border:none;border-radius:10px;padding:15px 18px;font-size:16.5px;font-weight:600;cursor:pointer;background:var(--accent);color:#fff}.btn:hover{background:var(--accent-strong)}.btn:disabled{background:#93b4f5;cursor:default}.btn-ghost{background:#fff;color:#374151;border:1px solid #d1d5db}.btn-ghost:hover{background:#f8fafc}.err{display:flex;align-items:center;gap:6px;font-size:14.5px;color:var(--danger);margin-top:10px}.back-link{display:flex;align-items:center;justify-content:center;gap:7px;margin-top:18px;font-size:15px;font-weight:600;color:var(--muted);background:none;border:none;cursor:pointer}.back-link:hover{color:var(--accent)}