.bwp-card {
    --bwp-ink: #162234;
    --bwp-muted: #627087;
    --bwp-line: #dce4ef;
    --bwp-blue: #1769e0;
    --bwp-blue-dark: #0f4ea9;
    max-width: 920px;
    margin: 42px auto;
    padding: clamp(24px, 5vw, 48px);
    color: var(--bwp-ink);
    background: linear-gradient(145deg, #ffffff 0%, #f6f9fd 100%);
    border: 1px solid var(--bwp-line);
    border-radius: 22px;
    box-shadow: 0 20px 60px rgba(33, 56, 86, 0.12);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
                 "Microsoft YaHei", sans-serif;
}

.bwp-card * {
    box-sizing: border-box;
}

.bwp-header h1 {
    margin: 8px 0 10px;
    font-size: clamp(28px, 5vw, 42px);
    line-height: 1.15;
    letter-spacing: -0.03em;
}

.bwp-header p {
    margin: 0;
    color: var(--bwp-muted);
}

.bwp-header .bwp-eyebrow {
    color: var(--bwp-blue);
    font-size: 12px;
    font-weight: 750;
    letter-spacing: 0.14em;
}

.bwp-form {
    margin-top: 30px;
}

.bwp-form label {
    display: block;
    margin-bottom: 9px;
    font-size: 14px;
    font-weight: 700;
}

.bwp-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 10px;
}

.bwp-row input,
.bwp-row textarea {
    min-width: 0;
    padding: 12px 15px;
    color: var(--bwp-ink);
    background: #fff;
    border: 1px solid #bdc9d9;
    border-radius: 10px;
    font-size: 16px;
    line-height: 1.55;
    outline: none;
    resize: vertical;
    transition: border-color .15s ease, box-shadow .15s ease;
}

.bwp-row input {
    height: 48px;
    padding-top: 0;
    padding-bottom: 0;
}

.bwp-row textarea {
    min-height: 144px;
}

.bwp-row input:focus,
.bwp-row textarea:focus {
    border-color: var(--bwp-blue);
    box-shadow: 0 0 0 3px rgba(23, 105, 224, 0.14);
}

.bwp-row button {
    align-self: start;
    min-height: 48px;
    padding: 0 22px;
    color: #fff;
    background: var(--bwp-blue);
    border: 0;
    border-radius: 10px;
    font-weight: 700;
    cursor: pointer;
    transition: background .15s ease, transform .15s ease;
}

.bwp-row button:hover {
    background: var(--bwp-blue-dark);
    transform: translateY(-1px);
}

.bwp-row button:disabled {
    opacity: .55;
    cursor: wait;
    transform: none;
}

.bwp-actions {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    margin-top: 10px;
    color: var(--bwp-muted);
    font-size: 13px;
}

.bwp-link-button {
    padding: 0;
    color: var(--bwp-blue);
    background: transparent;
    border: 0;
    cursor: pointer;
    white-space: nowrap;
}

.bwp-message {
    margin-top: 24px;
    padding: 12px 15px;
    border-radius: 10px;
    font-size: 14px;
}

.bwp-message.bwp-success {
    color: #12623c;
    background: #e8f8ef;
    border: 1px solid #bce6cd;
}

.bwp-message.bwp-error {
    color: #8f2530;
    background: #fff0f1;
    border: 1px solid #f0c5ca;
}

.bwp-message.bwp-info {
    color: #28517d;
    background: #eef6ff;
    border: 1px solid #cadff7;
}

.bwp-loading {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 24px;
    color: var(--bwp-muted);
}

.bwp-spinner {
    width: 18px;
    height: 18px;
    border: 2px solid #c6d5e8;
    border-top-color: var(--bwp-blue);
    border-radius: 50%;
    animation: bwp-spin .75s linear infinite;
}

.bwp-result {
    margin-top: 26px;
    display: grid;
    gap: 16px;
}

.bwp-result-item {
    overflow: hidden;
    background: #fff;
    border: 1px solid var(--bwp-line);
    border-radius: 14px;
}

.bwp-result-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 14px 18px;
    background: #f6f9fd;
}

.bwp-result-email {
    overflow-wrap: anywhere;
    font-size: 16px;
}

.bwp-status {
    flex: 0 0 auto;
    padding: 6px 10px;
    color: #fff;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 750;
}

.bwp-status-deliverable { background: #168354; }
.bwp-status-risky { background: #ba7200; }
.bwp-status-undeliverable { background: #bd3440; }
.bwp-status-unknown { background: #68778d; }
.bwp-status-error { background: #8f2530; }

.bwp-result-row {
    display: grid;
    grid-template-columns: minmax(120px, .8fr) minmax(0, 1.7fr);
    gap: 20px;
    padding: 12px 18px;
    border-top: 1px solid #edf1f6;
}

.bwp-result-key {
    color: var(--bwp-muted);
}

.bwp-result-value {
    overflow-wrap: anywhere;
    font-weight: 600;
}

.bwp-result code {
    padding: 2px 5px;
    color: #43536a;
    background: #edf2f8;
    border-radius: 5px;
    font-size: 12px;
}

.bwp-result-error {
    margin: 0;
    padding: 16px 18px;
    color: #8f2530;
    border-top: 1px solid #edf1f6;
}

[hidden] {
    display: none !important;
}

@keyframes bwp-spin {
    to { transform: rotate(360deg); }
}

@media (max-width: 600px) {
    .bwp-card {
        margin: 20px 10px;
        border-radius: 16px;
    }

    .bwp-row {
        grid-template-columns: 1fr;
    }

    .bwp-row button {
        width: 100%;
    }

    .bwp-result-row {
        grid-template-columns: 1fr;
        gap: 4px;
    }

    .bwp-result-head {
        align-items: flex-start;
        flex-direction: column;
    }
}