.skd-wrap{max-width:820px;margin:40px auto;padding:0 20px}
.skd-card{background:#fff;border:1px solid #ddd;border-radius:16px;padding:28px;box-shadow:0 8px 24px rgba(0,0,0,.06)}
.skd-card h1{margin-top:0;margin-bottom:10px}
.skd-field{margin:18px 0}
.skd-field label{display:block;font-weight:600;margin-bottom:8px}
.skd-field input{width:100%;padding:12px 14px;border:1px solid #cfcfcf;border-radius:10px;box-sizing:border-box}
#skd-card-element{padding:14px;border:1px solid #cfcfcf;border-radius:10px;background:#fff}
.skd-amounts{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:12px}
.skd-amount-btn,.skd-link-btn,#skd-submit{display:inline-block;padding:12px 16px;border-radius:10px;border:1px solid #111;background:#111;color:#fff;text-decoration:none;cursor:pointer;font-weight:600}
.skd-amount-btn{background:#fff;color:#111}
.skd-amount-btn.active{background:#111;color:#fff}
#skd-submit[disabled]{opacity:.6;cursor:not-allowed}
.skd-message{margin-top:16px;min-height:22px}
.skd-message-error{color:#b00020}
.skd-message-ok{color:#1b5e20}
.skd-summary{border:1px solid #ddd;border-radius:12px;padding:16px;background:#fafafa;margin:18px 0;display:grid;gap:10px}
.skd-actions-row{display:flex;flex-wrap:wrap;gap:10px}