.external-shell {
    min-height: 100vh;
    background:
        radial-gradient(circle at top left, rgba(21, 101, 192, 0.14), transparent 28%),
        radial-gradient(circle at bottom right, rgba(0, 150, 136, 0.10), transparent 24%),
        linear-gradient(180deg, #f6f9fc 0%, #edf3f7 100%);
}

.external-appbar {
    background: rgba(255, 255, 255, 0.84);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(18, 50, 74, 0.08);
}

.external-brand {
    font-weight: 700;
    color: #12324a;
    letter-spacing: 0.02em;
}

.external-content {
    padding: 0.75rem 0 2rem;
}

.ext-page-shell {
    min-height: calc(100vh - 80px);
}

.ext-hero {
    background:
        radial-gradient(circle at top left, rgba(21, 101, 192, 0.14), transparent 32%),
        linear-gradient(145deg, rgba(255, 255, 255, 0.98), rgba(240, 247, 255, 0.94));
    border: 1px solid rgba(18, 50, 74, 0.08);
    border-radius: 28px;
}

.ext-hero-inner {
    padding: 2rem;
}

.ext-kicker {
    display: block;
    text-align: center;
    letter-spacing: 0.18em;
    color: #2f6fa3;
    font-weight: 700;
}

.ext-title {
    color: #12324a;
    font-weight: 700;
}

.ext-subtitle {
    max-width: 42rem;
    color: #4a6578;
    font-size: 1.05rem;
}

.ext-pricing-card {
    height: 100%;
    display: flex;
    flex-direction: column;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(246, 250, 253, 0.96));
    border: 1px solid rgba(18, 50, 74, 0.08);
    border-radius: 28px;
    box-shadow: 0 18px 45px rgba(18, 50, 74, 0.08);
    overflow: hidden;
}

.ext-pricing-card-highlight {
    border-color: rgba(21, 101, 192, 0.16);
}

.ext-pricing-card-featured {
    transform: translateY(-10px);
    border-color: rgba(21, 101, 192, 0.25);
    box-shadow: 0 26px 60px rgba(21, 101, 192, 0.18);
}

.ext-pricing-card-content {
    padding: 1.25rem 2rem 1rem;
    flex: 1;
}

.ext-plan-tag {
    color: #5e7a8f;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.ext-plan-tag-strong {
    color: #1565c0;
}

.ext-plan-title,
.ext-section-title {
    color: #12324a;
    font-weight: 700;
}

.ext-old-price {
    color: #7a8d9b;
    text-decoration: line-through;
}

.ext-price {
    color: #12324a;
    font-weight: 800;
    line-height: 1;
}

.ext-period {
    color: #2f6fa3;
    font-weight: 600;
}

.ext-panel {
    height: 100%;
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid rgba(18, 50, 74, 0.08);
    border-radius: 24px;
    box-shadow: 0 18px 45px rgba(18, 50, 74, 0.07);
}

.ext-summary-panel {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(244, 249, 253, 0.96));
}

.ext-section-subtitle {
    color: #60798d;
}

.ext-summary-card {
    background: rgba(248, 251, 254, 0.95);
    border: 1px solid rgba(18, 50, 74, 0.08);
    border-radius: 18px;
}

.ext-action-button {
    width: 100%;
    max-width: 220px;
    min-width: 180px;
    border-radius: 14px;
    text-transform: none;
    font-weight: 600;
}

@media (max-width: 960px) {
    .ext-pricing-card-featured {
        transform: none;
    }
}

@media (max-width: 600px) {
    .external-content {
        padding-top: 0.5rem;
    }

    .ext-hero,
    .ext-pricing-card,
    .ext-panel {
        border-radius: 20px;
    }

    .ext-hero-inner {
        padding: 1.5rem;
    }

    .ext-pricing-card-content {
        padding-left: 1.25rem;
        padding-right: 1.25rem;
    }
}