*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;color:#1a2332;background:#f5f7fa;line-height:1.55}
.container{max-width:1100px;margin:0 auto;padding:0 20px}
.site-header{background:#fff;border-bottom:1px solid #e6ebf1;padding:14px 0;position:sticky;top:0;z-index:10}
.header-inner{display:flex;justify-content:space-between;align-items:center}
.logo{font-size:22px;font-weight:700;color:#1a2332;text-decoration:none}
.logo span{color:#0d6efd}
.site-header nav a{margin-left:18px;color:#555;text-decoration:none;font-size:14px}
main{padding:32px 0 60px}
.hero{text-align:center;margin-bottom:28px}
.hero h1{font-size:32px;margin:0 0 8px}
.hero p{color:#666;margin:0}
.filters{display:flex;gap:12px;flex-wrap:wrap;background:#fff;padding:16px;border-radius:12px;margin-bottom:24px;box-shadow:0 1px 3px rgba(0,0,0,.05)}
.filters label{display:flex;flex-direction:column;font-size:13px;color:#555;gap:4px;flex:1;min-width:140px}
.filters input{padding:9px 12px;border:1px solid #dfe6ee;border-radius:8px;font-size:14px}
.filters button{background:#0d6efd;color:#fff;border:0;padding:0 22px;border-radius:8px;cursor:pointer;font-weight:600;align-self:end;height:38px}
.offers{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:16px}
.offer-card{background:#fff;border-radius:14px;padding:20px;box-shadow:0 1px 4px rgba(0,0,0,.06);display:flex;flex-direction:column;gap:12px}
.offer-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.offer-head h2{margin:0;font-size:18px;flex:1}
.offer-head h2 a{color:#1a2332;text-decoration:none}
.offer-head .logo{width:44px;height:44px;object-fit:contain;border-radius:8px;background:#f5f7fa}
.logo-placeholder{width:44px;height:44px;border-radius:8px;background:#0d6efd;color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:20px}
.badge{background:#e7f5ea;color:#1e7d32;font-size:12px;font-weight:600;padding:3px 8px;border-radius:20px}
.offer-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;background:#f8fafc;padding:12px;border-radius:10px}
.offer-grid small{display:block;color:#889;font-size:11px;text-transform:uppercase;letter-spacing:.04em}
.offer-grid strong{font-size:14px}
.desc{margin:0;color:#555;font-size:14px}
.btn{display:inline-block;text-align:center;background:#0d6efd;color:#fff;text-decoration:none;padding:11px 18px;border-radius:10px;font-weight:600;border:0;cursor:pointer;font-size:15px}
.btn:hover{background:#0a58ca}
.btn-large{display:block;padding:15px;font-size:17px;margin:20px 0 10px}
.btn-ghost{background:transparent;color:#555;border:1px solid #dfe6ee}
.back{display:inline-block;margin-bottom:16px;color:#0d6efd;text-decoration:none;font-size:14px}
.offer-detail{background:#fff;padding:28px;border-radius:14px;box-shadow:0 1px 4px rgba(0,0,0,.06)}
.offer-detail ul{padding-left:20px}
.small{font-size:13px;color:#888}
.site-footer{margin-top:auto;background:#fff;border-top:1px solid #e6ebf1;padding:24px 0;text-align:center;font-size:13px;color:#888}
.site-footer a{color:#0d6efd;text-decoration:none}
.empty{text-align:center;color:#888;padding:40px}
/* admin */
.admin-bar{display:flex;justify-content:space-between;align-items:center;margin:20px 0}
.admin-table{width:100%;border-collapse:collapse;background:#fff;border-radius:12px;overflow:hidden;margin-top:16px;font-size:14px}
.admin-table th,.admin-table td{padding:10px 12px;text-align:left;border-bottom:1px solid #eef2f6}
.admin-table th{background:#f8fafc;font-weight:600;font-size:12px;text-transform:uppercase;color:#666}
.link-danger{background:none;border:0;color:#c62828;cursor:pointer;padding:0;font-size:14px}
.form{display:flex;flex-direction:column;gap:14px;background:#fff;padding:24px;border-radius:12px;margin-top:16px}
.form label{display:flex;flex-direction:column;font-size:13px;color:#555;gap:5px}
.form input,.form textarea{padding:10px 12px;border:1px solid #dfe6ee;border-radius:8px;font-size:14px;font-family:inherit}
.form .row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.form .checkbox{flex-direction:row;align-items:center;gap:8px}
.error{background:#fde8e8;color:#c62828;padding:10px;border-radius:8px}
@media(max-width:640px){.offer-grid{grid-template-columns:1fr}.hero h1{font-size:24px}.form .row{grid-template-columns:1fr}}