.fd-overlay {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: grid;
    place-items: center;
    padding: 20px;
    background: rgba(20, 30, 42, 0.58);
}

.fd-overlay[hidden],
.fd-section[hidden],
#fdPaymentLink[hidden],
.fd-panel [hidden] {
    display: none !important;
}

.fd-panel {
    position: relative;
    width: min(440px, 100%);
    max-height: calc(100vh - 40px);
    overflow-y: auto;
    padding: 28px;
    border: 1px solid #d9e1ea;
    border-radius: 8px;
    background: #ffffff;
    box-shadow: 0 24px 70px rgba(16, 35, 56, 0.28);
    color: #172033;
    font-family: "Microsoft YaHei", sans-serif;
}

.fd-panel h2 {
    margin: 0 36px 8px 0;
    font-size: 24px;
    line-height: 1.3;
}

.fd-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 34px;
    height: 34px;
    padding: 0;
    border: 0;
    background: transparent;
    color: #5d6876;
    font-size: 28px;
    line-height: 1;
    cursor: pointer;
}

.fd-description,
.fd-hint,
.fd-message,
#fdOrderInfo {
    color: #5a6878;
    font-size: 14px;
    line-height: 1.6;
}

.fd-tabs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4px;
    margin: 20px 0 16px;
    padding: 4px;
    border: 1px solid #d9e1ea;
    border-radius: 7px;
    background: #f4f7fa;
}

.fd-tabs button {
    min-height: 38px;
    border: 0;
    border-radius: 5px;
    background: transparent;
    color: #536173;
    cursor: pointer;
}

.fd-tabs button.is-active {
    background: #ffffff;
    color: #174f86;
    box-shadow: 0 2px 8px rgba(23, 51, 80, 0.12);
    font-weight: 700;
}

.fd-panel form,
.fd-section {
    display: grid;
    gap: 14px;
}

.fd-panel label {
    display: grid;
    gap: 6px;
    color: #344256;
    font-size: 14px;
    font-weight: 700;
}

.fd-panel input,
.fd-panel select {
    width: 100%;
    min-height: 42px;
    padding: 9px 11px;
    border: 1px solid #bdc9d6;
    border-radius: 6px;
    background: #ffffff;
    color: #172033;
    font: inherit;
}

.fd-panel button,
.fd-panel a.fd-primary {
    min-height: 42px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 9px 15px;
    border: 1px solid #245c9c;
    border-radius: 6px;
    background: #ffffff;
    color: #245c9c;
    font: inherit;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
}

.fd-panel .fd-primary {
    background: #245c9c;
    color: #ffffff;
}

.fd-price {
    margin: 16px 0 0;
    font-size: 16px;
}

.fd-price strong {
    color: #b33b2e;
    font-size: 22px;
}

#fdPaymentLink {
    display: grid;
    gap: 10px;
}

.fd-message {
    min-height: 22px;
    margin: 14px 0 0;
    color: #24704a;
}

.fd-message.is-error {
    color: #b12d25;
}