:root{--bg:#f7f8fa;--fg:#1a1a1a;--muted:#6b7280;--border:#e5e7eb;--accent:#1a73e8;--danger:#b91c1c;--card:#fff}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--fg);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.5}a{color:var(--accent)}.container{max-width:980px;margin:0 auto;padding:24px}.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:20px}.btn{display:inline-flex;align-items:center;gap:6px;padding:9px 14px;border:1px solid var(--border);background:#fff;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;text-decoration:none;color:var(--fg)}.btn:hover{background:#f3f4f6}.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent)}.btn-primary:hover{filter:brightness(.95);background:var(--accent)}.btn-danger{color:var(--danger);border-color:#f0c4c4}.btn-danger:hover{background:#fdf2f2}.btn:disabled{opacity:.6;cursor:default}.field{margin-bottom:16px}.field label{display:block;font-size:13px;font-weight:600;margin-bottom:6px}.field .hint{font-size:12px;color:var(--muted);font-weight:400;margin-top:4px}.input,.select,.textarea{width:100%;padding:9px 11px;border:1px solid var(--border);border-radius:8px;font-size:14px;font-family:inherit;background:#fff}.textarea{resize:vertical;min-height:70px}.section-title{font-size:15px;font-weight:700;margin:28px 0 12px;padding-bottom:8px;border-bottom:1px solid var(--border)}.row{display:flex;gap:16px;flex-wrap:wrap}.row>*{flex:1 1;min-width:160px}.error-box{background:#fdf2f2;border:1px solid #f0c4c4;color:var(--danger);padding:10px 12px;border-radius:8px;font-size:14px;margin-bottom:16px}.badge{display:inline-block;min-width:20px;text-align:center;padding:1px 7px;border-radius:999px;font-size:12px;font-weight:700;background:#eef2ff;color:#3730a3}.badge-unread{background:#fee2e2;color:#991b1b}.chip{display:inline-flex;align-items:center;gap:6px;background:#f3f4f6;border:1px solid var(--border);border-radius:999px;padding:4px 10px;font-size:13px;margin:0 6px 6px 0}.chip button{border:none;background:none;cursor:pointer;color:var(--muted);font-size:15px;line-height:1;padding:0}