.product-page {
    --product-burgundy: #760016;
    --product-burgundy-dark: #590011;
    --product-text: #1d1d1f;
    --product-muted: #686868;
    --product-border: #ded9d9;
    --product-blush: #fbf4f4;
    --product-soft: #f5f3f2;
    color: var(--product-text);
    background: #ffffff;
    font-family: "OPPO Sans", "Microsoft YaHei", sans-serif;
}

.product-page,
.product-page * {
    box-sizing: border-box;
}

.product-page img {
    display: block;
    max-width: 100%;
}

.product-page a {
    color: inherit;
    text-decoration: none;
}

.product-page button {
    font: inherit;
}

.product-shell {
    width: min(1440px, calc(100% - 64px));
    margin: 0 auto;
}

.product-section {
    padding: 108px 0;
}

.product-hero {
    position: relative;
    min-height: 520px;
    height: min(680px, calc(100vh - 140px));
    overflow: hidden;
    color: #ffffff;
}

.product-hero-media,
.product-hero-media img,
.product-hero-overlay {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.product-hero-media img {
    object-fit: cover;
    object-position: center;
    animation: productHeroScale 900ms ease-out both;
}

.product-hero-overlay {
    background: rgba(18, 12, 13, 0.38);
}

.product-hero-content {
    position: relative;
    z-index: 1;
    display: flex;
    height: 100%;
    max-width: 700px;
    margin-left: max(32px, calc((100% - min(1440px, calc(100% - 64px))) / 2));
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    animation: productHeroEnter 700ms 100ms ease-out both;
}

.product-kicker,
.product-section-kicker {
    margin: 0 0 14px;
    color: var(--product-burgundy);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0;
}

.product-hero .product-kicker {
    color: rgba(255, 255, 255, 0.82);
}

.product-hero h1 {
    max-width: 660px;
    margin: 0;
    font-size: 58px;
    line-height: 1.16;
    letter-spacing: 0;
}

.product-hero-content > p:not(.product-kicker) {
    max-width: 640px;
    margin: 24px 0 0;
    color: rgba(255, 255, 255, 0.86);
    font-size: 17px;
    line-height: 1.9;
}

.product-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 34px;
}

.product-button {
    display: inline-flex;
    min-width: 154px;
    min-height: 48px;
    align-items: center;
    justify-content: space-between;
    gap: 22px;
    padding: 0 20px;
    border: 1px solid transparent;
    color: #ffffff;
    font-size: 14px;
    font-weight: 600;
    transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.product-button::after {
    content: "→";
}

.product-button:hover,
.product-button:focus-visible {
    transform: translateY(-2px);
}

.product-page .product-button-primary {
    background: var(--product-burgundy);
    color: #ffffff;
}

.product-hero .product-button-primary {
    background: #ffffff;
    color: var(--product-burgundy);
}

.product-button-primary:hover,
.product-button-primary:focus-visible {
    background: var(--product-burgundy-dark);
}

.product-hero .product-button-primary:hover,
.product-hero .product-button-primary:focus-visible {
    background: #f4e9eb;
}

.product-button-ghost {
    border-color: rgba(255, 255, 255, 0.85);
    background: rgba(0, 0, 0, 0.08);
}

.product-button-ghost:hover,
.product-button-ghost:focus-visible {
    background: #ffffff;
    color: var(--product-burgundy);
}

.product-button-outline {
    border-color: var(--product-burgundy);
    color: var(--product-burgundy);
}

.product-button-outline:hover,
.product-button-outline:focus-visible {
    background: var(--product-burgundy);
    color: #ffffff;
}

.product-scroll {
    position: absolute;
    right: 34px;
    bottom: 44px;
    z-index: 1;
    padding-right: 38px;
    color: rgba(255, 255, 255, 0.86);
    font-size: 12px;
}

.product-scroll::after {
    position: absolute;
    top: 50%;
    right: 0;
    width: 24px;
    height: 1px;
    background: currentColor;
    content: "";
}

.product-anchor-nav {
    position: sticky;
    top: 0;
    z-index: 8;
    border-bottom: 1px solid rgba(222, 217, 217, 0.85);
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(12px);
}

.product-anchor-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    min-height: 62px;
}

.product-anchor-list a {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #4f4f4f;
    font-size: 13px;
    font-weight: 600;
}

.product-anchor-list a + a::before {
    position: absolute;
    left: 0;
    width: 1px;
    height: 20px;
    background: var(--product-border);
    content: "";
}

.product-anchor-list a::after {
    position: absolute;
    right: 30%;
    bottom: -1px;
    left: 30%;
    height: 3px;
    background: transparent;
    content: "";
}

.product-anchor-list a:hover,
.product-anchor-list a:focus-visible,
.product-anchor-list a.is-active {
    color: var(--product-burgundy);
}

.product-anchor-list a.is-active::after {
    background: var(--product-burgundy);
}

.product-intro-layout {
    display: grid;
    grid-template-columns: minmax(420px, 0.9fr) minmax(520px, 1.1fr);
    gap: 110px;
    align-items: start;
}

.product-heading h2 {
    max-width: 800px;
    margin: 0;
    font-size: 42px;
    line-height: 1.32;
    letter-spacing: 0;
}

.product-heading > p:not(.product-section-kicker) {
    max-width: 720px;
    margin: 22px 0 0;
    color: var(--product-muted);
    font-size: 16px;
    line-height: 1.9;
}

.product-heading-centered {
    text-align: center;
}

.product-heading-centered h2,
.product-heading-centered > p:not(.product-section-kicker) {
    margin-right: auto;
    margin-left: auto;
}

.product-intro-copy p {
    margin: 0;
    color: var(--product-muted);
    font-size: 16px;
    line-height: 2;
}

.product-intro-copy p + p {
    margin-top: 16px;
}

.product-proof {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    margin-top: 76px;
    border-top: 1px solid var(--product-border);
    border-bottom: 1px solid var(--product-border);
}

.product-proof > div {
    min-height: 128px;
    padding: 30px 28px;
}

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

.product-proof dt {
    color: var(--product-burgundy);
    font-size: 20px;
    font-weight: 700;
}

.product-proof dd {
    margin: 10px 0 0;
    color: var(--product-muted);
    font-size: 13px;
    line-height: 1.7;
}

.product-needs,
.product-guide {
    background: var(--product-blush);
}

.product-need-tabs {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    max-width: 900px;
    margin: 52px auto 0;
    border: 1px solid #d9cdcd;
    background: rgba(255, 255, 255, 0.58);
}

.product-need-tab,
.product-craft-tab {
    border: 0;
    background: transparent;
    cursor: pointer;
}

.product-need-tab {
    min-height: 54px;
    padding: 0 16px;
    color: #555555;
    font-size: 14px;
}

.product-need-tab + .product-need-tab {
    border-left: 1px solid #d9cdcd;
}

.product-need-tab:hover,
.product-need-tab:focus-visible,
.product-need-tab.is-active {
    background: var(--product-burgundy);
    color: #ffffff;
    outline: none;
}

.product-needs-stage {
    display: grid;
    grid-template-columns: minmax(480px, 1.05fr) minmax(460px, 0.95fr);
    min-height: 600px;
    margin-top: 40px;
    border: 1px solid #e0d4d4;
    background: #ffffff;
}

.product-need-visual {
    position: relative;
    min-height: 600px;
    margin: 0;
    overflow: hidden;
    background: #f7eeee;
}

.product-need-image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.product-image-contain {
    padding: 34px;
    object-fit: contain;
}

.product-image-cover {
    object-fit: cover;
    object-position: center 22%;
}

.product-need-image[hidden],
.product-craft-image[hidden],
.product-need-panel[hidden],
.product-craft-panel[hidden] {
    display: none;
}

.product-need-panels {
    display: flex;
    min-width: 0;
    align-items: center;
    padding: 60px 64px;
}

.product-panel-index {
    margin: 0 0 20px;
    color: var(--product-burgundy);
    font-size: 12px;
    font-weight: 700;
}

.product-need-panel h3,
.product-craft-panel h3 {
    margin: 0;
    font-size: 30px;
    line-height: 1.45;
}

.product-need-panel > p:not(.product-panel-index),
.product-craft-panel > p:not(.product-panel-index) {
    margin: 22px 0 0;
    color: var(--product-muted);
    font-size: 15px;
    line-height: 1.95;
}

.product-tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0;
    margin: 30px 0 0;
    padding: 0;
    list-style: none;
}

.product-tag-list li {
    padding: 0 14px;
    border-left: 1px solid var(--product-border);
    color: #555555;
    font-size: 13px;
}

.product-tag-list li:first-child {
    padding-left: 0;
    border-left: 0;
}

.product-text-link {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    margin-top: 36px;
    padding-bottom: 5px;
    border-bottom: 2px solid var(--product-burgundy);
    color: var(--product-burgundy) !important;
    font-size: 14px;
    font-weight: 700;
}

.product-text-link::after {
    content: "→";
}

.product-series-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
    margin-top: 58px;
}

.product-series-card {
    overflow: hidden;
    border: 1px solid var(--product-border);
    border-radius: 6px;
    background: #ffffff;
}

.product-series-card > img {
    width: 100%;
    aspect-ratio: 3 / 4;
    object-fit: cover;
    transition: transform 480ms ease;
}

.product-series-card:hover > img {
    transform: scale(1.025);
}

.product-series-card-detail > img {
    padding: 26px 8px 0;
    background: var(--product-blush);
    object-fit: contain;
}

.product-series-copy {
    position: relative;
    min-height: 230px;
    padding: 28px 26px 26px;
    background: #ffffff;
}

.product-series-copy > p:first-child {
    margin: 0 0 12px;
    color: var(--product-burgundy);
    font-size: 11px;
    font-weight: 700;
}

.product-series-copy h3 {
    margin: 0;
    font-size: 24px;
    line-height: 1.4;
}

.product-series-copy > p:not(:first-child) {
    margin: 15px 0 0;
    color: var(--product-muted);
    font-size: 14px;
    line-height: 1.8;
}

.product-series-copy span {
    position: absolute;
    right: 26px;
    bottom: 25px;
    left: 26px;
    padding-top: 15px;
    border-top: 1px solid var(--product-border);
    color: #555555;
    font-size: 12px;
}

.product-craft {
    background: #1f1c1d;
    color: #ffffff;
}

.product-craft-layout {
    display: grid;
    grid-template-columns: minmax(520px, 1.05fr) minmax(460px, 0.95fr);
    gap: 88px;
    align-items: center;
}

.product-craft-visual {
    position: relative;
    min-height: 650px;
    background: #f7eeee;
}

.product-craft-image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    padding: 34px;
    object-fit: contain;
}

.product-craft .product-section-kicker,
.product-craft .product-panel-index {
    color: #e3aab4;
}

.product-craft-content > h2 {
    max-width: 620px;
    margin: 0;
    font-size: 42px;
    line-height: 1.32;
}

.product-craft-intro {
    max-width: 620px;
    margin: 22px 0 0;
    color: rgba(255, 255, 255, 0.68);
    font-size: 15px;
    line-height: 1.9;
}

.product-craft-tabs {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    margin-top: 42px;
    border-top: 1px solid rgba(255, 255, 255, 0.25);
    border-bottom: 1px solid rgba(255, 255, 255, 0.25);
}

.product-craft-tab {
    min-height: 58px;
    color: rgba(255, 255, 255, 0.62);
    font-size: 13px;
}

.product-craft-tab + .product-craft-tab {
    border-left: 1px solid rgba(255, 255, 255, 0.25);
}

.product-craft-tab:hover,
.product-craft-tab:focus-visible,
.product-craft-tab.is-active {
    background: #ffffff;
    color: var(--product-burgundy);
    outline: none;
}

.product-craft-panels {
    min-height: 250px;
    padding-top: 38px;
}

.product-craft-panel > p:not(.product-panel-index) {
    color: rgba(255, 255, 255, 0.68);
}

.product-compare .product-heading {
    display: grid;
    grid-template-columns: minmax(430px, 0.9fr) minmax(500px, 1.1fr);
    gap: 100px;
    align-items: end;
}

.product-compare .product-heading > p:not(.product-section-kicker) {
    grid-column: 2;
    grid-row: 1 / span 2;
    align-self: end;
    margin: 0;
}

.product-table-wrap {
    margin-top: 56px;
    overflow-x: auto;
}

.product-compare-table {
    width: 100%;
    min-width: 900px;
    border-collapse: collapse;
    text-align: left;
}

.product-compare-table th,
.product-compare-table td {
    padding: 24px 22px;
    border-bottom: 1px solid var(--product-border);
    font-size: 14px;
    line-height: 1.75;
    vertical-align: top;
}

.product-compare-table thead th {
    border-top: 2px solid var(--product-text);
    color: var(--product-text);
    font-size: 12px;
}

.product-compare-table tbody th {
    color: var(--product-burgundy);
    font-size: 16px;
}

.product-compare-table tbody td {
    color: var(--product-muted);
}

.product-guide-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    margin: 56px 0 0;
    padding: 0;
    border-top: 1px solid #d9cdcd;
    border-bottom: 1px solid #d9cdcd;
    list-style: none;
}

.product-guide-list li {
    min-height: 250px;
    padding: 34px 30px;
}

.product-guide-list li + li {
    border-left: 1px solid #d9cdcd;
}

.product-guide-list span {
    color: var(--product-burgundy);
    font-size: 12px;
    font-weight: 700;
}

.product-guide-list h3 {
    margin: 46px 0 0;
    font-size: 22px;
}

.product-guide-list p {
    margin: 16px 0 0;
    color: var(--product-muted);
    font-size: 14px;
    line-height: 1.85;
}

.product-faq-layout {
    display: grid;
    grid-template-columns: minmax(360px, 0.78fr) minmax(600px, 1.22fr);
    gap: 100px;
    align-items: start;
}

.product-faq-list details {
    border-top: 1px solid var(--product-border);
}

.product-faq-list details:last-child {
    border-bottom: 1px solid var(--product-border);
}

.product-faq-list summary {
    display: flex;
    min-height: 76px;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    list-style: none;
}

.product-faq-list summary::-webkit-details-marker {
    display: none;
}

.product-faq-list summary span {
    color: var(--product-burgundy);
    font-size: 24px;
    font-weight: 400;
    transition: transform 180ms ease;
}

.product-faq-list details[open] summary span {
    transform: rotate(45deg);
}

.product-faq-list details p {
    margin: -4px 0 0;
    padding: 0 52px 26px 0;
    color: var(--product-muted);
    font-size: 14px;
    line-height: 1.9;
}

.product-consult {
    margin-bottom: 24px;
    padding: 70px 0;
    border-top: 1px solid #eadede;
    background: var(--product-blush);
}

.product-consult-layout {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 72px;
}

.product-consult h2 {
    margin: 0;
    font-size: 34px;
    line-height: 1.4;
}

.product-consult p:not(.product-section-kicker) {
    max-width: 700px;
    margin: 14px 0 0;
    color: var(--product-muted);
    font-size: 14px;
    line-height: 1.8;
}

.product-consult .product-actions {
    flex: 0 0 auto;
    margin-top: 0;
}

.product-js .product-reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 540ms ease, transform 540ms ease;
}

.product-js .product-reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

@keyframes productHeroScale {
    from { transform: scale(1.035); }
    to { transform: scale(1); }
}

@keyframes productHeroEnter {
    from { opacity: 0; transform: translateY(18px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 1180px) {
    .product-intro-layout,
    .product-compare .product-heading {
        grid-template-columns: 1fr 1fr;
        gap: 60px;
    }

    .product-needs-stage,
    .product-craft-layout {
        grid-template-columns: 1fr 1fr;
        gap: 0;
    }

    .product-craft-content {
        padding-left: 52px;
    }

    .product-need-panels {
        padding: 46px;
    }

    .product-series-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 24px;
    }

    .product-series-card > img {
        aspect-ratio: 4 / 4.4;
    }

    .product-faq-layout {
        gap: 60px;
    }
}

@media (max-width: 900px) {
    .product-intro-layout,
    .product-compare .product-heading,
    .product-faq-layout {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .product-compare .product-heading > p:not(.product-section-kicker) {
        grid-column: auto;
        grid-row: auto;
    }

    .product-proof,
    .product-guide-list {
        grid-template-columns: repeat(2, 1fr);
    }

    .product-proof > div:nth-child(3),
    .product-guide-list li:nth-child(3) {
        border-left: 0;
    }

    .product-proof > div:nth-child(-n + 2),
    .product-guide-list li:nth-child(-n + 2) {
        border-bottom: 1px solid var(--product-border);
    }

    .product-needs-stage,
    .product-craft-layout {
        grid-template-columns: 1fr;
    }

    .product-craft-layout {
        gap: 54px;
    }

    .product-craft-content {
        padding-left: 0;
    }

    .product-consult-layout {
        display: block;
    }

    .product-consult .product-actions {
        margin-top: 28px;
    }
}

@media (max-width: 767px) {
    .product-shell {
        width: calc(100% - 40px);
    }

    .product-section {
        padding: 76px 0;
    }

    .product-hero {
        min-height: 600px;
        height: 72vh;
        max-height: 760px;
    }

    .product-hero-media img {
        object-position: center;
    }

    .product-hero-overlay {
        background: rgba(22, 13, 15, 0.42);
    }

    .product-hero-content {
        width: calc(100% - 40px);
        max-width: none;
        height: 100%;
        margin: 0 auto;
        padding-top: 90px;
        justify-content: flex-end;
        padding-bottom: 74px;
    }

    .product-hero h1 {
        font-size: 38px;
        line-height: 1.22;
    }

    .product-hero-content > p:not(.product-kicker) {
        margin-top: 18px;
        font-size: 14px;
        line-height: 1.8;
    }

    .product-actions {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        width: 100%;
        margin-top: 26px;
    }

    .product-button {
        min-width: 0;
        min-height: 44px;
        gap: 10px;
        padding: 0 14px;
        font-size: 12px;
    }

    .product-scroll {
        display: none;
    }

    .product-anchor-nav {
        top: 72px;
    }

    .product-anchor-list {
        width: 100%;
        min-height: 54px;
        overflow-x: auto;
        grid-template-columns: repeat(4, minmax(110px, 1fr));
        scrollbar-width: none;
    }

    .product-anchor-list::-webkit-scrollbar {
        display: none;
    }

    .product-anchor-list a {
        font-size: 12px;
        white-space: nowrap;
    }

    .product-heading h2 {
        font-size: 30px;
        line-height: 1.38;
    }

    .product-heading > p:not(.product-section-kicker),
    .product-intro-copy p {
        font-size: 14px;
        line-height: 1.85;
    }

    .product-intro-layout {
        gap: 28px;
    }

    .product-proof {
        margin-top: 44px;
    }

    .product-proof > div {
        min-height: 132px;
        padding: 24px 16px;
    }

    .product-proof dt {
        font-size: 17px;
    }

    .product-proof dd {
        font-size: 12px;
    }

    .product-need-tabs {
        display: flex;
        margin-top: 38px;
        overflow-x: auto;
        scrollbar-width: none;
    }

    .product-need-tabs::-webkit-scrollbar {
        display: none;
    }

    .product-need-tab {
        flex: 0 0 112px;
        min-height: 48px;
        padding: 0 12px;
        font-size: 12px;
    }

    .product-needs-stage {
        min-height: 0;
        margin-top: 24px;
    }

    .product-need-visual {
        min-height: 0;
        aspect-ratio: 1 / 1.08;
    }

    .product-image-contain {
        padding: 14px;
    }

    .product-need-panels {
        min-height: 420px;
        padding: 36px 24px 40px;
        align-items: flex-start;
    }

    .product-need-panel h3,
    .product-craft-panel h3 {
        font-size: 23px;
    }

    .product-need-panel > p:not(.product-panel-index),
    .product-craft-panel > p:not(.product-panel-index) {
        font-size: 14px;
        line-height: 1.85;
    }

    .product-tag-list li {
        padding: 0 10px;
        font-size: 12px;
    }

    .product-series-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        margin-top: 40px;
    }

    .product-series-card > img {
        aspect-ratio: 4 / 4.6;
        object-position: center 22%;
    }

    .product-series-card-detail > img {
        object-position: center;
    }

    .product-series-copy {
        min-height: 210px;
        padding: 24px 22px;
    }

    .product-series-copy span {
        right: 22px;
        bottom: 22px;
        left: 22px;
    }

    .product-craft-layout {
        gap: 44px;
    }

    .product-craft-visual {
        min-height: 0;
        aspect-ratio: 1 / 1.08;
    }

    .product-craft-image {
        padding: 14px;
    }

    .product-craft-content > h2 {
        font-size: 30px;
    }

    .product-craft-tabs {
        margin-top: 32px;
    }

    .product-craft-tab {
        min-height: 52px;
        font-size: 12px;
    }

    .product-craft-panels {
        min-height: 320px;
        padding-top: 32px;
    }

    .product-table-wrap {
        margin-top: 38px;
    }

    .product-compare-table {
        min-width: 760px;
    }

    .product-compare-table th,
    .product-compare-table td {
        padding: 20px 16px;
        font-size: 13px;
    }

    .product-guide-list {
        grid-template-columns: 1fr;
        margin-top: 38px;
    }

    .product-guide-list li,
    .product-guide-list li:nth-child(3) {
        min-height: 0;
        padding: 26px 0;
        border-right: 0;
        border-bottom: 1px solid #d9cdcd;
        border-left: 0;
    }

    .product-guide-list li:last-child {
        border-bottom: 0;
    }

    .product-guide-list h3 {
        margin-top: 22px;
    }

    .product-faq-layout {
        gap: 42px;
    }

    .product-faq-list summary {
        min-height: 68px;
        font-size: 14px;
    }

    .product-faq-list details p {
        padding-right: 22px;
        font-size: 13px;
    }

    .product-consult {
        margin-bottom: 16px;
        padding: 56px 0;
    }

    .product-consult h2 {
        font-size: 27px;
    }

    .product-consult .product-actions {
        display: grid;
        margin-top: 24px;
    }

    .down-fixed {
        display: none;
    }
}

@media (prefers-reduced-motion: reduce) {
    .product-hero-media img,
    .product-hero-content,
    .product-js .product-reveal,
    .product-series-card > img {
        animation: none;
        transition: none;
    }
}