:root {
    --topic-blue: #0867f2;
    --topic-blue-dark: #052f72;
    --topic-ink: #102a4c;
    --topic-muted: #6d7f96;
    --topic-line: #dfe7f2;
    --topic-soft: #f4f8fd;
}

.product-topic-page {
    color: var(--topic-ink);
    background: #fff;
}

.product-topic-page .footer {
    margin-top: 0;
}

.product-topic-page .header .scroll-open,
.product-topic-page .header .scroll-fixed,
.product-topic-page .header .menu-open {
    background-color: rgb(0, 93, 255) !important;
    box-shadow: 0 6px 20px rgba(4, 45, 110, 0.14);
    backdrop-filter: blur(14px);
}

.product-topic-hero {
    position: relative;
    min-height: 560px;
    overflow: hidden;
    background-color: var(--topic-blue);
    background-image: linear-gradient(90deg, rgba(3, 37, 98, 0.36), rgba(8, 103, 242, 0.08)), url('../images/banner.png');
    background-position: center;
    background-size: cover;
    color: #fff;
}

.product-topic-hero::after {
    position: absolute;
    right: -120px;
    bottom: -240px;
    width: 620px;
    height: 620px;
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 50%;
    content: '';
    animation: topic-pulse 7s ease-in-out infinite alternate;
}

.product-topic-hero-inner {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: flex-end;
    min-height: 560px;
    padding-top: 142px;
    padding-bottom: 72px;
}

.product-topic-hero-copy {
    max-width: 830px;
    animation: topic-rise 0.65s ease-out both;
}

.product-topic-breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 24px;
    color: rgba(255, 255, 255, 0.5);
    font-size: 12px;
}

.product-topic-breadcrumb a {
    color: rgba(255, 255, 255, 0.72);
    text-decoration: none;
}

.product-topic-breadcrumb a:hover,
.product-topic-breadcrumb [aria-current='page'] {
    color: #fff;
}

.product-topic-eyebrow,
.product-topic-kicker,
.product-topic-heading > div > span,
.product-topic-final-cta span {
    display: inline-block;
    margin-bottom: 15px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.product-topic-eyebrow {
    color: rgba(255, 255, 255, 0.72);
}

.product-topic-kicker,
.product-topic-heading > div > span {
    color: var(--topic-blue);
}

.product-topic-hero h1 {
    max-width: 820px;
    margin: 0;
}

.product-topic-hero-copy > p:not(.product-topic-note) {
    max-width: 720px;
    margin: 24px 0 0;
    color: rgba(255, 255, 255, 0.86);
    font-size: 17px;
    line-height: 1.85;
}

.product-topic-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 32px;
}

.product-topic-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 25px;
    border: 1px solid transparent;
    border-radius: 5px;
    font-size: 15px;
    font-weight: 650;
    text-decoration: none;
    transition: transform 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

.product-topic-btn:hover {
    transform: translateY(-2px);
}

.product-topic-btn-primary {
    border-color: #fff;
    background: #fff;
    color: var(--topic-blue);
}

.product-topic-btn-primary:hover {
    background: #eef5ff;
    color: #0358cf;
}

.product-topic-btn-ghost {
    border-color: rgba(255, 255, 255, 0.48);
    color: #fff;
}

.product-topic-btn-ghost:hover {
    border-color: #fff;
    color: #fff;
}

.product-topic-note {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 22px 0 0;
    color: rgba(255, 255, 255, 0.74);
    font-size: 13px;
}

.product-topic-note i {
    color: #fff;
}

.product-topic-switcher {
    position: relative;
    z-index: 2;
    border-bottom: 1px solid var(--topic-line);
    background: #fff;
}

.product-topic-switcher .container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
}

.product-topic-switcher a {
    position: relative;
    display: flex;
    min-width: 0;
    padding: 23px 24px 22px;
    border-left: 1px solid var(--topic-line);
    color: var(--topic-ink);
    flex-direction: column;
    text-decoration: none;
    transition: background-color 0.2s ease;
}

.product-topic-switcher a:last-child {
    border-right: 1px solid var(--topic-line);
}

.product-topic-switcher a::after {
    position: absolute;
    right: 20px;
    bottom: -1px;
    left: 20px;
    height: 3px;
    background: var(--topic-blue);
    content: '';
    transform: scaleX(0);
    transition: transform 0.24s ease;
}

.product-topic-switcher a:hover,
.product-topic-switcher a.active {
    background: #f7faff;
}

.product-topic-switcher a:hover::after,
.product-topic-switcher a.active::after {
    transform: scaleX(1);
}

.product-topic-switcher span {
    font-size: 17px;
    font-weight: 700;
}

.product-topic-switcher small {
    overflow: hidden;
    margin-top: 6px;
    color: var(--topic-muted);
    font-size: 12px;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.product-topic-section {
    padding: 88px 0;
}

.product-topic-signals-section {
    padding: 0;
}

.product-topic-signals {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    border-right: 1px solid var(--topic-line);
    border-bottom: 1px solid var(--topic-line);
    border-left: 1px solid var(--topic-line);
}

.product-topic-signals > div {
    display: flex;
    padding: 28px 32px;
    flex-direction: column;
}

.product-topic-signals > div + div {
    border-left: 1px solid var(--topic-line);
}

.product-topic-signals span {
    color: var(--topic-muted);
    font-size: 13px;
}

.product-topic-signals strong {
    margin-top: 7px;
    color: var(--topic-ink);
    font-size: 19px;
    font-weight: 680;
}

.product-topic-heading {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 48px;
    margin-bottom: 44px;
}

.product-topic-heading h2,
.product-topic-selection-copy h2,
.product-topic-faq-heading h2,
.product-topic-final-cta h2 {
    margin: 0;
}

.product-topic-heading > p {
    max-width: 480px;
    margin: 0;
    color: var(--topic-muted);
    font-size: 15px;
    line-height: 1.8;
}

.product-topic-use-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    border-top: 1px solid var(--topic-line);
    border-bottom: 1px solid var(--topic-line);
}

.product-topic-use-list article {
    padding: 38px 36px 42px;
}

.product-topic-use-list article + article {
    border-left: 1px solid var(--topic-line);
}

.product-topic-use-list article > span {
    color: var(--topic-blue);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.08em;
}

.product-topic-use-list h3 {
    margin: 32px 0 14px;
    color: var(--topic-ink);
    font-size: 22px;
    font-weight: 700;
}

.product-topic-use-list p {
    margin: 0;
    color: var(--topic-muted);
    font-size: 15px;
    line-height: 1.85;
}

.product-topic-selection-section,
.product-topic-products-section {
    background: var(--topic-soft);
}

.product-topic-selection-layout {
    display: grid;
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: 100px;
}

.product-topic-selection-copy > p {
    max-width: 470px;
    margin: 24px 0;
    color: var(--topic-muted);
    font-size: 15px;
    line-height: 1.85;
}

.product-topic-text-link {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    color: var(--topic-blue);
    font-size: 15px;
    font-weight: 650;
    text-decoration: none;
}

.product-topic-text-link:hover {
    color: #034eb8;
}

.product-topic-text-link i {
    transition: transform 0.2s ease;
}

.product-topic-text-link:hover i {
    transform: translateX(4px);
}

.product-topic-checklist {
    margin: 0;
    padding: 0;
    border-top: 1px solid var(--topic-line);
    list-style: none;
}

.product-topic-checklist li {
    display: grid;
    grid-template-columns: 54px 1fr;
    gap: 18px;
    padding: 22px 0;
    border-bottom: 1px solid var(--topic-line);
    align-items: start;
}

.product-topic-checklist span {
    color: var(--topic-blue);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.08em;
}

.product-topic-checklist p {
    margin: 0;
    color: var(--topic-ink);
    font-size: 16px;
    line-height: 1.75;
}

.topic-product-list.product {
    margin-top: 0;
}

.topic-product-list.product .col .box {
    background-color: #fff;
}

.product-topic-product-more {
    margin-top: 34px;
}

.product-topic-empty {
    padding: 50px;
    border: 1px solid var(--topic-line);
    color: var(--topic-muted);
    text-align: center;
}

.product-topic-faq-layout {
    display: grid;
    grid-template-columns: minmax(260px, 0.72fr) minmax(0, 1.28fr);
    gap: 90px;
}

.product-topic-faq-heading > p {
    max-width: 360px;
    margin: 22px 0 0;
    color: var(--topic-muted);
    font-size: 15px;
    line-height: 1.8;
}

.product-topic-faq .accordion-item {
    border: 0;
    border-bottom: 1px solid var(--topic-line);
    border-radius: 0;
}

.product-topic-faq .accordion-item:first-child {
    border-top: 1px solid var(--topic-line);
}

.product-topic-faq .accordion-button {
    padding: 24px 4px;
    background: #fff;
    color: var(--topic-ink);
    font-size: 16px;
    font-weight: 650;
    box-shadow: none;
}

.product-topic-faq .accordion-button:not(.collapsed) {
    color: var(--topic-blue);
}

.product-topic-faq .accordion-body {
    padding: 0 4px 24px;
    color: var(--topic-muted);
    font-size: 15px;
    line-height: 1.85;
}

.product-topic-final-cta {
    border-top: 1px solid var(--topic-line);
    background: var(--topic-soft);
    color: var(--topic-ink);
}

.product-topic-final-cta-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    min-height: 210px;
    padding-top: 44px;
    padding-bottom: 44px;
}

.product-topic-final-cta span {
    color: var(--topic-blue);
}

.product-topic-final-cta h2 {
    color: var(--topic-ink);
}

.product-topic-final-cta .product-topic-btn-primary {
    border-color: var(--topic-blue);
    background: var(--topic-blue);
    color: #fff;
}

.product-topic-final-cta .product-topic-btn-primary:hover {
    border-color: #0358cf;
    background: #0358cf;
    color: #fff;
}

@keyframes topic-rise {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes topic-pulse {
    from { transform: scale(0.96); opacity: 0.72; }
    to { transform: scale(1.04); opacity: 1; }
}

@media (max-width: 991px) {
    .product-topic-switcher .container {
        grid-template-columns: repeat(2, 1fr);
    }

    .product-topic-switcher a:nth-child(3) {
        border-top: 1px solid var(--topic-line);
    }

    .product-topic-switcher a:nth-child(4) {
        border-top: 1px solid var(--topic-line);
    }

    .product-topic-use-list,
    .product-topic-selection-layout,
    .product-topic-faq-layout {
        grid-template-columns: 1fr;
    }

    .product-topic-use-list article + article {
        border-top: 1px solid var(--topic-line);
        border-left: 0;
    }

    .product-topic-selection-layout,
    .product-topic-faq-layout {
        gap: 52px;
    }
}

@media (max-width: 767px) {
    .product-topic-hero,
    .product-topic-hero-inner {
        min-height: 540px;
    }

    .product-topic-hero-inner {
        padding-top: 118px;
        padding-bottom: 50px;
    }

    .product-topic-hero-copy > p:not(.product-topic-note) {
        font-size: 15px;
        line-height: 1.75;
    }

    .product-topic-note {
        align-items: flex-start;
        line-height: 1.65;
    }

    .product-topic-switcher .container {
        padding-right: 0;
        padding-left: 0;
    }

    .product-topic-switcher a {
        padding: 18px 16px;
    }

    .product-topic-switcher small {
        display: none;
    }

    .product-topic-signals {
        grid-template-columns: 1fr;
        border-right: 0;
        border-left: 0;
    }

    .product-topic-signals > div {
        padding: 22px 4px;
    }

    .product-topic-signals > div + div {
        border-top: 1px solid var(--topic-line);
        border-left: 0;
    }

    .product-topic-section {
        padding: 64px 0;
    }

    .product-topic-signals-section {
        padding: 0;
    }

    .product-topic-heading {
        align-items: flex-start;
        gap: 20px;
        margin-bottom: 32px;
        flex-direction: column;
    }

    .product-topic-use-list article {
        padding: 30px 4px 32px;
    }

    .product-topic-use-list h3 {
        margin-top: 20px;
    }

    .product-topic-final-cta-inner {
        align-items: flex-start;
        flex-direction: column;
    }
}

@media (prefers-reduced-motion: reduce) {
    .product-topic-hero-copy,
    .product-topic-hero::after {
        animation: none;
    }

    .product-topic-btn,
    .product-topic-text-link i,
    .product-topic-switcher a::after {
        transition: none;
    }
}