.checkout-failure-page {
    background: #f6f8fb;
}

.checkout-failure-page .header .container {
    gap: 1.5rem;
}

.checkout-nav {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 1.15rem;
    margin-left: auto;
}

.checkout-nav a {
    color: #243041;
    font-weight: 700;
    text-decoration: none;
}

.checkout-nav a:hover,
.checkout-nav a:focus-visible {
    color: #006d77;
    text-decoration: underline;
    text-underline-offset: 0.25rem;
}

.checkout-hero {
    background:
        radial-gradient(circle at 84% 18%, rgba(42, 157, 143, 0.18), transparent 28rem),
        linear-gradient(145deg, #f8fbfd 0%, #eef6f4 100%);
}

.checkout-hero .container {
    align-items: center;
}

.checkout-signal-panel {
    border-top: 0.35rem solid #2a9d8f;
    box-shadow: 0 1.2rem 3.5rem rgba(16, 42, 67, 0.12);
}

.checkout-panel-label {
    color: #08796d;
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    margin: 0 0 0.5rem;
    text-transform: uppercase;
}

.checkout-symptoms {
    background: #ffffff;
}

.checkout-demo-section,
.checkout-boundary-section {
    padding: 5rem 0;
}

.checkout-demo-section {
    background: #102a43;
    color: #f8fbfd;
}

.checkout-demo-section .section-kicker {
    color: #8ee3d8;
}

.checkout-demo-section .section-title,
.checkout-demo-section .section-intro {
    color: inherit;
}

.checkout-demo-section .section-intro {
    max-width: 56rem;
}

.checkout-demo-shell {
    background: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 1.25rem;
    box-shadow: 0 1.5rem 4rem rgba(0, 0, 0, 0.22);
    color: #243041;
    margin-top: 2rem;
    overflow: hidden;
}

.checkout-scenario {
    align-items: end;
    background: #eaf4f2;
    display: grid;
    gap: 0.7rem 1.25rem;
    grid-template-columns: minmax(0, 1fr) auto;
    padding: 1.5rem;
}

.checkout-scenario label {
    color: #102a43;
    font-size: 0.86rem;
    font-weight: 800;
    grid-column: 1 / -1;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.checkout-scenario select {
    background: #ffffff;
    border: 1px solid #8da5b6;
    border-radius: 0.65rem;
    color: #102a43;
    font: inherit;
    min-height: 3rem;
    padding: 0.7rem 2.6rem 0.7rem 0.85rem;
    width: 100%;
}

.checkout-scenario > p {
    color: #455b6b;
    font-size: 0.9rem;
    grid-column: 1 / -1;
    margin: 0;
}

.checkout-demo-actions {
    display: flex;
    gap: 0.65rem;
    grid-column: 2;
    grid-row: 2;
}

.checkout-demo-actions .cta-button {
    border: 0;
    cursor: pointer;
    font: inherit;
    white-space: nowrap;
}

.checkout-demo-reset {
    background: transparent;
    border: 1px solid #60798a;
    border-radius: 0.65rem;
    color: #243041;
    cursor: pointer;
    font: inherit;
    font-weight: 700;
    padding: 0.75rem 1rem;
}

.checkout-demo-reset:hover,
.checkout-demo-reset:focus-visible {
    background: #ffffff;
    border-color: #006d77;
}

.checkout-scenario select:focus-visible,
.checkout-demo-actions button:focus-visible,
.checkout-demo-result:focus-visible {
    outline: 3px solid #f4a261;
    outline-offset: 3px;
}

.checkout-comparison {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    padding: 1.5rem;
}

.checkout-case {
    background: #f8fafc;
    border: 1px solid #cbd8e1;
    border-radius: 0.9rem;
    min-width: 0;
    padding: 1.25rem;
}

.checkout-case > span,
.checkout-demo-result span,
.checkout-boundaries article > span {
    color: #557082;
    display: block;
    font-size: 0.76rem;
    font-weight: 800;
    letter-spacing: 0.07em;
    text-transform: uppercase;
}

.checkout-case h3 {
    color: #102a43;
    margin: 0.35rem 0 1rem;
}

.checkout-case dl,
.checkout-case dl div {
    margin: 0;
}

.checkout-case dl div {
    border-top: 1px solid #dce5eb;
    display: grid;
    gap: 1rem;
    grid-template-columns: minmax(5.5rem, 0.45fr) minmax(0, 1fr);
    padding: 0.75rem 0;
}

.checkout-case dt {
    color: #60798a;
    font-weight: 700;
}

.checkout-case dd {
    margin: 0;
    overflow-wrap: anywhere;
}

.checkout-status {
    color: #455b6b;
}

.checkout-status.is-pass {
    color: #08796d;
}

.checkout-status.is-fail {
    color: #b13e2f;
}

.checkout-demo-result {
    background: #fff9ed;
    border-top: 1px solid #edd9ae;
    display: grid;
    gap: 1px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.checkout-demo-result[hidden] {
    display: none;
}

.checkout-demo-result > div {
    background: #fffdf8;
    padding: 1.25rem 1.5rem;
}

.checkout-demo-result p {
    color: #243041;
    line-height: 1.55;
    margin: 0.45rem 0 0;
}

.checkout-demo-noscript {
    background: #fff9ed;
    border-top: 1px solid #edd9ae;
    line-height: 1.55;
    padding: 1.25rem 1.5rem;
}

.checkout-deliverable {
    background: #eef3f7;
}

.checkout-boundary-section {
    background: #ffffff;
}

.checkout-boundaries {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-top: 2rem;
}

.checkout-boundaries article {
    background: #f8fafc;
    border: 1px solid #d8e1e7;
    border-radius: 0.9rem;
    padding: 1.4rem;
}

.checkout-boundaries strong {
    color: #102a43;
    display: block;
    font-size: clamp(1.35rem, 2.5vw, 1.8rem);
    margin: 0.35rem 0 0.65rem;
}

.checkout-boundaries p,
.checkout-boundary-note {
    color: #455b6b;
    line-height: 1.6;
    margin: 0;
}

.checkout-boundary-note {
    border-left: 0.25rem solid #f4a261;
    margin-top: 1.25rem;
    max-width: 62rem;
    padding: 0.25rem 0 0.25rem 1rem;
}

@media (max-width: 860px) {
    .checkout-scenario {
        grid-template-columns: 1fr;
    }

    .checkout-demo-actions {
        grid-column: 1;
        grid-row: auto;
    }

    .checkout-comparison,
    .checkout-demo-result,
    .checkout-boundaries {
        grid-template-columns: 1fr;
    }

    .checkout-demo-result {
        gap: 0;
    }

    .checkout-demo-result > div + div {
        border-top: 1px solid #edd9ae;
    }
}

@media (max-width: 640px) {
    .checkout-nav {
        gap: 0.8rem;
    }

    .checkout-nav a:first-child {
        display: none;
    }

    .checkout-demo-section,
    .checkout-boundary-section {
        padding: 3.5rem 0;
    }

    .checkout-scenario,
    .checkout-comparison {
        padding: 1rem;
    }

    .checkout-demo-actions {
        align-items: stretch;
        flex-direction: column;
    }

    .checkout-demo-actions .cta-button,
    .checkout-demo-reset {
        justify-content: center;
        text-align: center;
        width: 100%;
    }

    .checkout-case dl div {
        gap: 0.3rem;
        grid-template-columns: 1fr;
    }
}

@media (prefers-reduced-motion: reduce) {
    .checkout-failure-page *,
    .checkout-failure-page *::before,
    .checkout-failure-page *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
    }
}