:root {
    --red: #e21e2b;
    --blue: #123b84;
    --ink: #11161c;
    --muted: #68717c;
    --line: #dce1e6;
    --paper: #f3f5f7;
    --dark: #101820;
    --max: 1440px
}

* {
    box-sizing: border-box
}

html {
    scroll-behavior: smooth
}

body {
    margin: 0;
    color: var(--ink);
    background: #fff;
    font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
    letter-spacing: 0
}

body.menu-open {
    overflow: hidden
}

a {
    color: inherit;
    text-decoration: none
}

button,
input,
select {
    font: inherit
}

.wrap {
    width: min(var(--max), 88vw);
    margin: auto
}

.topbar {
    height: 34px;
    background: #101820;
    color: #aeb8c3;
    font-size: 11px
}

.topbar .wrap {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between
}

.topbar .wrap>div {
    display: flex;
    align-items: center;
    gap: 22px
}

.topbar a {
    color: #fff
}

.topbar button {
    border: 0;
    background: transparent;
    color: #fff;
    cursor: pointer
}

.header {
    height: 88px;
    background: #fff;
    position: sticky;
    top: 0;
    z-index: 50;
    border-bottom: 1px solid #e7eaed;
    transition: box-shadow .3s
}

.header.scrolled {
    box-shadow: 0 8px 28px rgba(18, 28, 38, .09)
}

.header-inner {
    height: 100%;
    display: flex;
    align-items: center
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0
}

.brand img {
    width: 56px;
    height: 56px;
    object-fit: contain
}

.brand span {
    border-left: 1px solid #d8dde2;
    padding-left: 12px
}

.brand b {
    font-size: 20px;
    letter-spacing: 2px;
    display: block
}

.brand small {
    font-size: 9px;
    color: #7d8791;
    letter-spacing: 2px;
    display: block;
    margin-top: 3px
}

.nav {
    display: flex;
    height: 100%;
    align-items: center;
    margin-left: auto
}

.nav a {
    height: 100%;
    min-width: 91px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative
}

.nav b {
    font-size: 13px;
    font-weight: 600
}

.nav small {
    font-size: 8px;
    color: #a2a8ae;
    margin-top: 5px
}

.nav a:after {
    content: "";
    position: absolute;
    bottom: 0;
    width: 0;
    height: 3px;
    background: var(--red);
    transition: width .3s
}

.nav a:hover,
.nav a.active {
    color: var(--red)
}

.nav a:hover:after,
.nav a.active:after {
    width: 28px
}

.nav-cta {
    height: 42px;
    margin-left: 18px;
    display: flex;
    align-items: center;
    background: var(--red);
    color: #fff;
    font-size: 12px
}

.nav-cta span {
    padding: 0 16px
}

.nav-cta i {
    font-style: normal;
    font-size: 17px;
    padding: 0 13px;
    border-left: 1px solid rgba(255, 255, 255, .28)
}

.menu-toggle {
    display: none
}

.hero {
    height: calc(100vh - 122px);
    min-height: 620px;
    max-height: 820px;
    position: relative;
    background: #0b1016;
    overflow: hidden
}

.hero-slide {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0;
    visibility: hidden;
    transform: scale(1.035);
    transition: opacity .9s, visibility .9s, transform 6.5s
}

.hero-slide:after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(4, 9, 14, .28), transparent 55%)
}

.hero-slide.active {
    opacity: 1;
    visibility: visible;
    transform: scale(1)
}

.hero-content {
    height: 100%;
    position: relative;
    z-index: 1;
    color: #fff;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-bottom: 70px
}

.hero-content>p {
    font-size: 11px;
    letter-spacing: 4px;
    color: #c9d1da;
    margin: 0 0 22px
}

.hero-content h1,
.hero-content h2 {
    font-size: clamp(47px, 5vw, 76px);
    line-height: 1.15;
    margin: 0;
    font-weight: 600
}

.hero-content em {
    font-style: normal;
    color: #fff
}

.hero-line {
    width: 48px;
    height: 3px;
    background: var(--red);
    margin: 27px 0 18px
}

.hero-content>span {
    font-size: 15px;
    color: #d6dce1;
    letter-spacing: 1px
}

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

.button {
    min-height: 46px;
    padding: 0 22px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid transparent;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer
}

.button i {
    font-style: normal;
    margin-left: 20px
}

.button.red {
    background: var(--red);
    color: #fff
}

.button.ghost {
    color: #fff;
    border-color: rgba(255, 255, 255, .55);
    background: rgba(0, 0, 0, .12)
}

.button:hover {
    filter: brightness(1.08)
}

.hero-controls {
    position: absolute;
    z-index: 3;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    justify-content: space-between;
    align-items: end
}

.slide-tabs {
    display: flex;
    gap: 10px
}

.slide-tabs button {
    width: 170px;
    padding: 0 0 10px;
    border: 0;
    border-bottom: 2px solid rgba(255, 255, 255, .3);
    background: transparent;
    color: #fff;
    display: grid;
    grid-template-columns: 27px 1fr;
    position: relative;
    text-align: left;
    cursor: pointer
}

.slide-tabs b {
    font-size: 12px;
    color: #aeb7c0
}

.slide-tabs span {
    font-size: 11px
}

.slide-tabs i {
    position: absolute;
    height: 2px;
    background: var(--red);
    left: 0;
    bottom: -2px;
    width: 0
}

.slide-tabs button.active i {
    animation: slideProgress 6s linear forwards
}

.slide-tabs button.paused i {
    animation-play-state: paused
}

.slide-arrows {
    display: flex
}

.slide-arrows button {
    width: 44px;
    height: 42px;
    border: 1px solid rgba(255, 255, 255, .3);
    background: rgba(0, 0, 0, .15);
    color: #fff;
    font-size: 18px;
    cursor: pointer
}

.slide-arrows button+button {
    border-left: 0
}

@keyframes slideProgress {
    from {
        width: 0
    }

    to {
        width: 100%
    }
}

.quick-data {
    background: #fff;
    border-bottom: 1px solid var(--line)
}

.quick-data .wrap {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    height: 108px
}

.quick-data .wrap>div {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-left: 28px;
    border-left: 1px solid var(--line)
}

.quick-data .wrap>div:last-child {
    border-right: 1px solid var(--line)
}

.quick-data b {
    font-family: Arial, sans-serif;
    font-size: 30px;
    font-weight: 500;
    color: var(--blue)
}

.quick-data b small {
    font-size: 12px;
    margin-left: 3px
}

.quick-data span {
    font-size: 11px;
    color: var(--muted);
    margin-top: 5px
}

.block {
    padding: 92px 0
}

.section-index {
    display: flex;
    align-items: center;
    gap: 12px;
    font: bold 10px Arial;
    color: var(--red);
    letter-spacing: 2px
}

.section-index i {
    width: 32px;
    height: 1px;
    background: currentColor
}

.section-index.light {
    color: #8da6d7
}

.section-head {
    display: flex;
    align-items: end;
    justify-content: space-between;
    margin-bottom: 42px
}

.section-head h2,
.about-copy h2,
.quality-copy h2,
.faq-title h2 {
    font-size: clamp(30px, 3.25vw, 48px);
    line-height: 1.28;
    margin: 14px 0 0;
    font-weight: 600
}

.section-head h2 span,
.about-copy h2 span,
.quality-copy h2 span {
    color: var(--blue)
}

.section-head>p {
    font-size: 12px;
    line-height: 1.9;
    text-align: right;
    color: var(--muted)
}

.section-head.dark {
    color: #fff
}

.section-head.dark h2 span {
    color: #8eabde
}

.line-link {
    font-size: 12px;
    color: var(--blue);
    font-weight: 600;
    border-bottom: 1px solid #9eabc0;
    padding-bottom: 7px
}

.line-link i {
    font-style: normal;
    margin-left: 18px
}

.about-grid {
    display: grid;
    grid-template-columns: 1.05fr .95fr;
    gap: 7vw;
    align-items: center
}

.about-visual {
    height: 510px;
    position: relative;
    overflow: hidden
}

.about-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover
}

.year-badge {
    position: absolute;
    right: 0;
    bottom: 0;
    background: var(--red);
    color: #fff;
    width: 190px;
    height: 145px;
    padding: 24px
}

.year-badge strong {
    font: 52px Arial
}

.year-badge sup {
    font-size: 19px
}

.year-badge span {
    display: block;
    font-size: 11px;
    margin-top: 8px
}

.about-copy h2 {
    margin: 18px 0 24px
}

.about-copy h2 span {
    display: inline-block
}

.about-copy p {
    font-size: 13px;
    line-height: 2;
    color: var(--muted)
}

.about-copy .lead {
    font-size: 15px;
    color: #353c44
}

.about-points {
    display: grid;
    grid-template-columns: 1fr 1fr;
    margin: 27px 0
}

.about-points span {
    padding: 12px 0;
    border-bottom: 1px solid var(--line);
    font-size: 12px
}

.about-points span:before {
    content: "✓";
    color: var(--red);
    margin-right: 9px
}

.products {
    background: var(--dark);
    color: #fff
}

.products .section-head h2 span {
    color: #9cb6e7
}

.products .section-head>p {
    color: #9fa9b4
}

.product-row {
    height: 500px;
    display: flex;
    gap: 7px
}

.product-item {
    flex: 1;
    min-width: 0;
    position: relative;
    overflow: hidden;
    cursor: pointer;
    transition: flex .65s cubic-bezier(.2, .8, .2, 1)
}

.product-item.active,
.product-item:hover {
    flex: 2.35
}

.product-item:after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(transparent 35%, rgba(5, 9, 13, .92))
}

.product-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: saturate(.72);
    transition: transform .65s, filter .65s
}

.product-item:hover img,
.product-item.active img {
    transform: scale(1.04);
    filter: saturate(.9)
}

.product-caption {
    position: absolute;
    z-index: 1;
    left: 24px;
    right: 24px;
    bottom: 28px
}

.product-caption>b {
    font: 11px Arial;
    color: #f24b54
}

.product-caption h3 {
    font-size: 19px;
    margin: 10px 0 8px;
    white-space: nowrap
}

.product-caption p {
    font-size: 11px;
    color: #b9c2cb;
    white-space: nowrap
}

.product-caption a {
    display: none;
    color: #fff;
    font-size: 11px;
    margin-top: 18px
}

.product-item.active .product-caption a,
.product-item:hover .product-caption a {
    display: block
}

.solutions {
    background: #edf1f5
}

.solution-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border-top: 1px solid #cfd6dc;
    border-left: 1px solid #cfd6dc
}

.solution-grid article {
    height: 300px;
    padding: 28px;
    border-right: 1px solid #cfd6dc;
    border-bottom: 1px solid #cfd6dc;
    position: relative;
    background: #edf1f5;
    transition: background .3s, color .3s, transform .3s
}

.solution-grid article:hover {
    background: var(--blue);
    color: #fff;
    transform: translateY(-5px)
}

.solution-grid article>span {
    font: 10px Arial;
    color: var(--red)
}

.solution-icon {
    width: 52px;
    height: 52px;
    border: 1px solid #aeb8c1;
    margin: 40px 0 28px;
    display: grid;
    place-items: center;
    font-weight: bold
}

.solution-grid h3 {
    font-size: 18px
}

.solution-grid p {
    font-size: 12px;
    line-height: 1.8;
    color: var(--muted)
}

.solution-grid article:hover p {
    color: #cbd7e8
}

.quality-grid {
    display: grid;
    grid-template-columns: .85fr 1.15fr;
    gap: 7vw;
    align-items: center
}

.quality-copy>p {
    color: var(--muted);
    line-height: 2;
    font-size: 13px
}

.quality-copy ol {
    list-style: none;
    padding: 0;
    margin: 28px 0 0
}

.quality-copy li {
    display: grid;
    grid-template-columns: 40px 1fr;
    padding: 15px 0;
    border-top: 1px solid var(--line)
}

.quality-copy li>b {
    font: 11px Arial;
    color: var(--red)
}

.quality-copy li strong {
    display: block;
    font-size: 13px;
    margin-bottom: 5px
}

.quality-copy li span {
    font-size: 11px;
    color: var(--muted)
}

.quality-photo {
    height: 480px;
    position: relative
}

.quality-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover
}

.quality-stamp {
    position: absolute;
    right: -1px;
    bottom: -1px;
    width: 200px;
    height: 145px;
    background: #fff;
    padding: 24px;
    display: flex;
    flex-direction: column
}

.quality-stamp b {
    font-size: 12px;
    color: var(--red)
}

.quality-stamp strong {
    font: 25px Arial;
    margin: 8px 0
}

.quality-stamp span {
    font-size: 11px;
    color: var(--muted)
}

.certificates {
    background: var(--paper)
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px
}

.cert-grid article {
    background: #fff;
    border: 1px solid #e0e4e8
}

.cert-grid img {
    width: 100%;
    height: 235px;
    object-fit: contain;
    padding: 18px;
    background: #f8f9fa
}

.cert-grid article>div {
    padding: 17px 20px;
    border-top: 1px solid #e6e9ec
}

.cert-grid b {
    display: block;
    font-size: 13px
}

.cert-grid span {
    font-size: 10px;
    color: var(--muted)
}

.cases {
    background: #13203a;
    color: #fff
}

.cases .section-head>p {
    color: #a8b6c8
}

.case-band {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border-top: 1px solid rgba(255, 255, 255, .2);
    border-left: 1px solid rgba(255, 255, 255, .2)
}

.case-band article {
    padding: 37px 28px;
    height: 195px;
    border-right: 1px solid rgba(255, 255, 255, .2);
    border-bottom: 1px solid rgba(255, 255, 255, .2);
    transition: background .3s
}

.case-band article:hover {
    background: var(--red)
}

.case-band b {
    font: 11px Arial;
    color: #92aad4
}

.case-band h3 {
    font-size: 18px;
    margin: 28px 0 10px
}

.case-band p {
    font-size: 11px;
    color: #b8c3d2
}

.process {
    background: var(--red);
    color: #fff
}

.process .wrap {
    height: 108px;
    display: flex;
    align-items: center;
    justify-content: space-between
}

.process .wrap>div {
    display: flex;
    align-items: center;
    gap: 10px
}

.process b {
    font: 11px Arial;
    opacity: .65
}

.process span {
    font-size: 12px
}

.process i {
    font-style: normal;
    opacity: .45
}

.news-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 35px
}

.news-feature {
    display: grid;
    grid-template-columns: 1.05fr .95fr;
    border: 1px solid var(--line)
}

.news-feature img {
    width: 100%;
    height: 100%;
    object-fit: cover
}

.news-feature>div {
    padding: 27px
}

.news-feature time,
.news-feature>div>span,
.news-list span {
    font-size: 10px;
    color: var(--muted)
}

.news-feature>div>span {
    color: var(--red);
    margin-left: 12px
}

.news-feature h3 {
    font-size: 19px;
    line-height: 1.55;
    margin: 20px 0 12px
}

.news-feature p,
.news-list p {
    font-size: 11px;
    line-height: 1.8;
    color: var(--muted)
}

.news-feature a {
    font-size: 11px;
    color: var(--blue);
    display: inline-block;
    margin-top: 16px
}

.news-list article {
    display: grid;
    grid-template-columns: 72px 1fr 24px;
    gap: 20px;
    align-items: center;
    min-height: 124px;
    border-top: 1px solid var(--line)
}

.news-list article:last-child {
    border-bottom: 1px solid var(--line)
}

.news-list time b {
    font: 22px Arial;
    color: var(--ink);
    display: block
}

.news-list time small {
    font-size: 10px;
    color: var(--muted)
}

.news-list h3 {
    font-size: 14px;
    margin: 7px 0
}

.news-list p {
    margin: 0
}

.news-list i {
    font-style: normal;
    color: var(--blue)
}

.faq {
    background: var(--paper)
}

.faq-grid {
    display: grid;
    grid-template-columns: .7fr 1.3fr;
    gap: 10vw
}

.faq-title p {
    color: var(--muted);
    font-size: 12px;
    margin: 16px 0 25px
}

.faq-list details {
    border-top: 1px solid #ccd2d8;
    padding: 19px 0
}

.faq-list details:last-child {
    border-bottom: 1px solid #ccd2d8
}

.faq-list summary {
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between
}

.faq-list summary i {
    font-style: normal;
    color: var(--red);
    font-size: 20px
}

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

.faq-list p {
    font-size: 12px;
    line-height: 1.9;
    color: var(--muted);
    padding-right: 50px
}

.contact {
    padding: 82px 0;
    background: #0f1823;
    color: #fff
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 9vw
}

.contact h2 {
    font-size: clamp(34px, 3.6vw, 54px);
    margin: 18px 0;
    line-height: 1.25
}

.contact h2 span {
    color: #8faad8
}

.contact p {
    font-size: 13px;
    line-height: 2;
    color: #aeb8c3
}

.contact-tags {
    display: flex;
    gap: 10px;
    margin-top: 30px
}

.contact-tags span {
    font-size: 10px;
    border: 1px solid #536170;
    padding: 8px 12px
}

.contact form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 22px 16px
}

.contact label>span {
    display: block;
    font-size: 10px;
    color: #9ca8b4
}

.contact input,
.contact select {
    width: 100%;
    height: 45px;
    color: #fff;
    background: transparent;
    border: 0;
    border-bottom: 1px solid #52606e;
    outline: 0;
    font-size: 12px
}

.contact select option {
    color: #111
}

.contact form button {
    margin-top: 4px
}

.contact form small {
    font-size: 9px;
    color: #778491;
    align-self: center
}

.footer {
    background: #0a1017;
    color: #fff
}

.footer-main {
    padding: 60px 0 45px;
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 8vw
}

.footer-brand .brand span {
    border-color: #46515d
}

.footer-brand .brand b {
    font-size: 19px
}

.footer-brand p {
    font-size: 11px;
    color: #7f8b97;
    line-height: 1.9;
    margin-top: 22px
}

.footer-nav {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px
}

.footer-nav>div {
    display: flex;
    flex-direction: column;
    gap: 11px
}

.footer-nav b {
    font-size: 12px;
    margin-bottom: 6px
}

.footer-nav a,
.footer-nav span {
    font-size: 10px;
    color: #7f8b97
}

.footer-nav a:hover {
    color: #fff
}

.footer-contact a {
    color: #ef4a53;
    margin-top: 5px
}

.footer-bottom {
    height: 57px;
    border-top: 1px solid #222b35;
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: #65717d;
    font-size: 9px
}

.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity .8s, transform .8s
}

.reveal.in-view {
    opacity: 1;
    transform: none
}

@media(max-width:1100px) {
    .wrap {
        width: min(92vw, var(--max))
    }

    .nav a {
        min-width: 74px
    }

    .nav small {
        display: none
    }

    .nav-cta {
        display: none
    }

    .product-row {
        height: 430px
    }

    .cert-grid img {
        height: 190px
    }
}

@media(max-width:800px) {
    .topbar {
        display: none
    }

    .header {
        height: 70px
    }

    .brand img {
        width: 45px;
        height: 45px
    }

    .brand b {
        font-size: 16px
    }

    .nav {
        display: none
    }

    .nav.open {
        display: flex;
        position: fixed;
        inset: 70px 0 0;
        background: #fff;
        flex-direction: column;
        padding: 24px 6vw;
        overflow: auto
    }

    .nav.open a {
        width: 100%;
        height: 60px;
        flex-direction: row;
        justify-content: space-between;
        border-bottom: 1px solid var(--line)
    }

    .nav.open small {
        display: block
    }

    .menu-toggle {
        display: flex;
        margin-left: auto;
        width: 38px;
        height: 38px;
        border: 0;
        background: transparent;
        flex-direction: column;
        justify-content: center;
        gap: 5px
    }

    .menu-toggle span {
        width: 22px;
        height: 2px;
        background: var(--ink);
        transition: .3s
    }

    .menu-toggle.active span:first-child {
        transform: translateY(7px) rotate(45deg)
    }

    .menu-toggle.active span:nth-child(2) {
        opacity: 0
    }

    .menu-toggle.active span:last-child {
        transform: translateY(-7px) rotate(-45deg)
    }

    .hero {
        height: 650px;
        min-height: 0
    }

    .hero-content {
        padding-bottom: 120px
    }

    .hero-content h1,
    .hero-content h2 {
        font-size: 40px
    }

    .hero-slide {
        background-position: 62% center
    }

    .hero-slide:after {
        background: linear-gradient(90deg, rgba(4, 9, 14, .7), rgba(4, 9, 14, .1))
    }

    .hero-controls {
        bottom: 28px
    }

    .slide-tabs {
        width: 100%
    }

    .slide-tabs button {
        width: auto;
        flex: 1;
        display: block
    }

    .slide-tabs span {
        display: none
    }

    .slide-arrows {
        display: none
    }

    .quick-data .wrap {
        grid-template-columns: repeat(2, 1fr);
        height: auto
    }

    .quick-data .wrap>div {
        height: 88px;
        border-bottom: 1px solid var(--line)
    }

    .quick-data .wrap>div:last-child {
        grid-column: 1/-1
    }

    .block {
        padding: 68px 0
    }

    .about-grid,
    .quality-grid,
    .contact-grid,
    .faq-grid,
    .news-grid {
        grid-template-columns: 1fr
    }

    .about-visual,
    .quality-photo {
        height: 380px
    }

    .about-copy {
        margin-top: 16px
    }

    .section-head {
        align-items: flex-start;
        flex-direction: column;
        gap: 12px
    }

    .section-head>p {
        text-align: left
    }

    .product-row {
        height: auto;
        display: grid;
        grid-template-columns: 1fr 1fr
    }

    .product-item {
        height: 290px
    }

    .product-item.active,
    .product-item:hover {
        flex: auto
    }

    .solution-grid,
    .cert-grid,
    .case-band {
        grid-template-columns: 1fr 1fr
    }

    .solution-grid article {
        height: 260px
    }

    .cert-grid img {
        height: 180px
    }

    .process {
        padding: 22px 0
    }

    .process .wrap {
        height: auto;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 16px
    }

    .process i {
        display: none
    }

    .news-feature {
        grid-template-columns: 1fr
    }

    .news-feature img {
        height: 260px
    }

    .contact form {
        margin-top: 35px
    }

    .footer-main {
        grid-template-columns: 1fr
    }

    .footer-nav {
        grid-template-columns: 1fr 1fr
    }

    .footer-bottom {
        height: auto;
        padding: 20px 0;
        gap: 12px;
        flex-wrap: wrap
    }
}

@media(max-width:480px) {

    .hero-content h1,
    .hero-content h2 {
        font-size: 34px
    }

    .hero-actions {
        align-items: flex-start;
        flex-direction: column
    }

    .hero-actions .button {
        width: 180px
    }

    .product-row,
    .solution-grid,
    .cert-grid,
    .case-band {
        grid-template-columns: 1fr
    }

    .product-item {
        height: 340px
    }

    .numbers {
        grid-template-columns: 1fr
    }

    .contact form {
        grid-template-columns: 1fr
    }

    .footer-nav {
        grid-template-columns: 1fr 1fr
    }

    .about-visual,
    .quality-photo {
        height: 320px
    }

    .year-badge {
        width: 150px;
        height: 118px;
        padding: 18px
    }

    .year-badge strong {
        font-size: 40px
    }
}

@media(prefers-reduced-motion:reduce) {
    html {
        scroll-behavior: auto
    }

    .hero-slide,
    .product-item,
    .reveal {
        transition: none
    }

    .slide-tabs button.active i {
        animation: none;
        width: 100%
    }
}

/* Brighter brand-led palette and cleaner section hierarchy. */
:root {
    --dark: #123b84;
    --paper: #f4f7fb;
    --ink: #18212b
}

.topbar {
    background: var(--blue);
    color: #dfeaff
}

.header {
    background: #fff
}

.section-index {
    display: none
}

.slide-tabs b,
.product-caption>b,
.solution-grid article>span,
.case-band article>b,
.process b,
.quality-copy li>b {
    display: none
}

.products {
    background: #edf3fa;
    color: var(--ink)
}

.products .section-head h2,
.products .section-head p {
    color: var(--ink)
}

.products .section-head h2 span {
    color: var(--blue)
}

.products .section-head>p {
    color: var(--muted)
}

.product-item {
    box-shadow: 0 12px 28px rgba(18, 59, 132, .12)
}

.solutions {
    background: #f7f9fc
}

.solutions .section-head.dark {
    color: var(--ink)
}

.solutions .section-head.dark h2 span {
    color: var(--blue)
}

.cases {
    background: #dfeaf8;
    color: var(--ink)
}

.cases .section-head.dark {
    color: var(--ink)
}

.cases .section-head.dark h2 span {
    color: var(--blue)
}

.cases .section-head>p {
    color: var(--muted)
}

.case-band {
    border-color: #bdcde1
}

.case-band article {
    border-color: #bdcde1
}

.case-band article:hover {
    background: var(--blue);
    color: #fff
}

.case-band article p {
    color: var(--muted)
}

.case-band article:hover p {
    color: #dfeaff
}

.process {
    background: var(--red)
}

.contact {
    background: #e7eff9;
    color: var(--ink)
}

.contact p {
    color: #5d6b7a
}

.contact input,
.contact select {
    color: var(--ink);
    border-color: #aebed2
}

.contact form small {
    color: #6c7c8d
}

.footer {
    background: var(--blue)
}

.footer-brand p,
.footer-nav a,
.footer-nav span {
    color: #c5d4eb
}

.footer-bottom {
    border-color: rgba(255, 255, 255, .18);
    color: #c5d4eb
}

.footer-nav a:hover {
    color: #fff
}

.section-kicker {
    font-size: 11px;
    letter-spacing: 2px;
    color: var(--red);
    font-weight: 700
}

.section-kicker.light {
    color: #e21e2b
}

.quality-copy li {
    grid-template-columns: 1fr
}

.quality-copy li strong {
    color: var(--blue)
}

.quality-copy li span {
    display: block
}

.quality-photo,
.about-visual {
    box-shadow: 0 20px 45px rgba(18, 59, 132, .13)
}

.quick-data .wrap>div {
    transition: background .3s, transform .3s
}

.quick-data .wrap>div:hover {
    background: #edf3fa;
    transform: translateY(-4px)
}

.solution-grid article {
    transition: background .35s, color .35s, transform .35s, box-shadow .35s
}

.solution-grid article:hover {
    box-shadow: 0 16px 30px rgba(18, 59, 132, .15)
}

.cert-grid article {
    transition: transform .35s, box-shadow .35s
}

.cert-grid article:hover {
    transform: translateY(-8px);
    box-shadow: 0 18px 32px rgba(18, 59, 132, .13)
}

.news-feature,
.news-list article {
    transition: transform .35s, box-shadow .35s
}

.news-feature:hover {
    transform: translateY(-5px);
    box-shadow: 0 16px 28px rgba(18, 59, 132, .1)
}

.news-list article:hover {
    padding-left: 8px;
    background: #f4f7fb
}

.year-badge {
    animation: badgeFloat 4s ease-in-out infinite
}

@keyframes badgeFloat {

    0%,
    100% {
        transform: translateY(0)
    }

    50% {
        transform: translateY(-7px)
    }
}

.slide-tabs button {
    grid-template-columns: 1fr
}

.hero-slide.active .hero-content>p {
    animation: heroRise .7s .1s both
}

.hero-slide.active .hero-content h1,
.hero-slide.active .hero-content h2 {
    animation: heroRise .8s .2s both
}

.hero-slide.active .hero-line,
.hero-slide.active .hero-content>span {
    animation: heroRise .8s .34s both
}

.hero-slide.active .hero-actions {
    animation: heroRise .8s .46s both
}

@keyframes heroRise {
    from {
        opacity: 0;
        transform: translateY(24px)
    }

    to {
        opacity: 1;
        transform: none
    }
}

.button.red {
    position: relative;
    overflow: hidden
}

.button.red:after {
    content: "";
    position: absolute;
    top: -30%;
    left: -45%;
    width: 28%;
    height: 160%;
    background: rgba(255, 255, 255, .28);
    transform: skewX(-20deg);
    transition: left .55s
}

.button.red:hover:after {
    left: 120%
}

@media(max-width:800px) {
    .menu-toggle {
        display: flex !important;
        margin-left: auto;
        position: relative;
        z-index: 60
    }

    .slide-tabs button {
        display: block
    }

    .slide-tabs span {
        display: none
    }
}

@media(max-width:800px) {
    .menu-toggle {
        display: block !important;
        width: 42px;
        height: 42px;
        padding: 0;
        color: var(--blue);
        font-size: 0
    }

    .menu-toggle:before {
        content: "☰";
        font-size: 25px;
        line-height: 42px
    }

    .menu-toggle span {
        display: none
    }

    .menu-toggle.active:before {
        content: "×";
        font-size: 31px
    }
}

@media(max-width:800px) {
    .menu-toggle {
        position: absolute !important;
        right: 4vw;
        top: 14px;
        background: var(--blue) !important;
        color: #fff !important;
        border: 0;
        border-radius: 2px
    }

    .menu-toggle:before {
        display: block;
        text-align: center
    }
}

/* Bright banner treatment and richer image-led feature sections. */
.brand b {
    font-size: 16px;
    letter-spacing: 0;
    white-space: nowrap;
    color: var(--blue)
}

.brand span {
    padding-left: 14px
}

.footer-brand .brand b {
    font-size: 0
}

.footer-brand .brand b:after {
    content: "唐山亿安金属制品有限公司";
    font-size: 16px;
    letter-spacing: 0;
    color: #fff;
    white-space: nowrap
}

.footer-brand .brand small {
    display: none
}

.nav a {
    justify-content: center
}

.nav small {
    display: none
}

.hero {
    background: #eef3f8
}

.hero-slide:after {
    background: linear-gradient(90deg, rgba(255, 255, 255, .94) 0%, rgba(255, 255, 255, .82) 31%, rgba(255, 255, 255, .18) 56%, transparent 75%)
}

.hero-content {
    color: var(--blue)
}

.hero-content>p {
    color: #526987;
    font-weight: 700
}

.hero-content h1,
.hero-content h2,
.hero-content em {
    color: var(--blue)
}

.hero-content>span {
    color: #4f6174
}

.button.ghost {
    color: var(--blue);
    border-color: rgba(18, 59, 132, .45);
    background: rgba(255, 255, 255, .5)
}

.slide-tabs button {
    color: var(--blue);
    border-color: rgba(18, 59, 132, .25)
}

.slide-tabs span {
    font-weight: 700
}

.slide-arrows button {
    color: var(--blue);
    border-color: rgba(18, 59, 132, .35);
    background: rgba(255, 255, 255, .66)
}

.product-caption h3 {
    color: #fff !important;
    text-shadow: 0 2px 8px rgba(0, 0, 0, .55)
}

.product-caption p {
    color: #eef4ff
}

.products .section-head h2 {
    color: var(--blue)
}

.solutions {
    padding-bottom: 105px;
    background: linear-gradient(180deg, #f8fbff 0%, #edf4fb 100%)
}

.solution-grid {
    gap: 16px;
    border: 0
}

.solution-grid article {
    height: 390px;
    border: 0;
    background-size: cover;
    background-position: center;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    overflow: hidden;
    color: #fff;
    box-shadow: 0 16px 30px rgba(18, 59, 132, .12)
}

.solution-grid article:before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(18, 59, 132, .04) 20%, rgba(11, 35, 73, .9) 100%);
    transition: background .35s
}

.solution-grid article:nth-child(1) {
    background-image: url('../images/banner-bright-project.jpg')
}

.solution-grid article:nth-child(2) {
    background-image: url('../images/factory-01.jpg')
}

.solution-grid article:nth-child(3) {
    background-image: url('../images/banner-bright-factory.jpg')
}

.solution-grid article:nth-child(4) {
    background-image: url('../images/product-copper.jpg')
}

.solution-grid article>* {
    position: relative;
    z-index: 1
}

.solution-grid article:hover {
    background-color: transparent;
    transform: translateY(-9px)
}

.solution-grid article:hover:before {
    background: linear-gradient(180deg, rgba(226, 30, 43, .03), rgba(18, 59, 132, .96))
}

.solution-icon {
    margin: 0 0 20px;
    border-color: rgba(255, 255, 255, .6);
    background: rgba(255, 255, 255, .13);
    backdrop-filter: blur(5px)
}

.solution-grid h3 {
    font-size: 21px;
    margin: 0 0 10px
}

.solution-grid p {
    color: #e7effa;
    margin: 0;
    min-height: 45px
}

.quality {
    position: relative;
    overflow: hidden;
    background: #fff
}

.quality:before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 17%;
    background: #edf4fb;
    z-index: 0
}

.quality-grid {
    position: relative;
    z-index: 1;
    grid-template-columns: .92fr 1.08fr;
    gap: 5vw
}

.quality-copy {
    background: #fff;
    padding: 42px 48px;
    box-shadow: 0 22px 55px rgba(18, 59, 132, .1);
    border-top: 4px solid var(--red)
}

.quality-copy ol {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px
}

.quality-copy li {
    border: 0;
    background: #f2f6fb;
    padding: 18px 20px;
    position: relative;
    transition: transform .3s, background .3s
}

.quality-copy li:before {
    content: "✓";
    position: absolute;
    right: 18px;
    top: 17px;
    width: 24px;
    height: 24px;
    background: var(--blue);
    color: #fff;
    display: grid;
    place-items: center;
    font-size: 11px;
    border-radius: 50%
}

.quality-copy li:hover {
    transform: translateX(8px);
    background: #e5eef9
}

.quality-photo {
    height: 600px
}

.quality-stamp {
    background: var(--blue);
    color: #fff;
    width: 220px;
    height: 155px
}

.quality-stamp b {
    color: #fff
}

.quality-stamp span {
    color: #dce8fa
}

.cases {
    padding-top: 105px;
    background: #f3f7fc
}

.case-band {
    gap: 16px;
    border: 0
}

.case-band article {
    height: 320px;
    border: 0;
    padding: 30px;
    background-size: cover;
    background-position: center;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    position: relative;
    overflow: hidden;
    color: #fff;
    box-shadow: 0 14px 28px rgba(18, 59, 132, .12)
}

.case-band article:before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 25%, rgba(11, 35, 73, .9))
}

.case-band article:nth-child(1) {
    background-image: url('../images/banner-bright-project.jpg')
}

.case-band article:nth-child(2) {
    background-image: url('../images/banner-bright-factory.jpg')
}

.case-band article:nth-child(3) {
    background-image: url('../images/factory-02.jpg')
}

.case-band article:nth-child(4) {
    background-image: url('../images/banner-bright-product.jpg')
}

.case-band article h3,
.case-band article p {
    position: relative;
    z-index: 1
}

.case-band article h3 {
    font-size: 20px;
    margin: 0 0 10px
}

.case-band article p {
    color: #e2ebf8;
    margin: 0
}

.case-band article:hover {
    background-color: transparent;
    transform: translateY(-8px)
}

.cases .section-head.dark {
    color: var(--blue)
}

.cases .section-head.dark h2 span {
    color: var(--red)
}

@media(max-width:800px) {
    .brand b {
        font-size: 13px;
        white-space: normal;
        max-width: 215px
    }

    .hero-slide:after {
        background: linear-gradient(90deg, rgba(255, 255, 255, .92), rgba(255, 255, 255, .5) 70%, transparent)
    }

    .hero-content h1,
    .hero-content h2 {
        font-size: 36px
    }

    .solution-grid article,
    .case-band article {
        height: 300px
    }

    .quality-copy {
        padding: 28px 22px
    }

    .quality:before {
        display: none
    }

    .quality-photo {
        height: 380px
    }
}

.solution-showcase {
    background: #fff
}

.solution-showcase .section-head h2 span {
    color: var(--blue)
}

.solution-flow {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    border: 1px solid #ced9e6;
    background: #fff
}

.solution-flow article {
    min-height: 300px;
    padding: 34px 28px;
    border-right: 1px solid #ced9e6;
    position: relative;
    transition: background .35s, transform .35s, box-shadow .35s
}

.solution-flow article:last-child {
    border-right: 0
}

.solution-flow article:after {
    content: "→";
    position: absolute;
    right: -13px;
    top: 52px;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: var(--red);
    color: #fff;
    z-index: 2;
    font-size: 12px
}

.solution-flow article:last-child:after {
    display: none
}

.solution-flow article:hover {
    background: #edf4fb;
    transform: translateY(-7px);
    box-shadow: 0 16px 30px rgba(18, 59, 132, .12);
    z-index: 1
}

.flow-mark {
    width: 58px;
    height: 58px;
    border: 1px solid var(--blue);
    color: var(--blue);
    display: grid;
    place-items: center;
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 52px;
    position: relative
}

.flow-mark:before {
    content: "";
    position: absolute;
    left: 12px;
    bottom: -13px;
    width: 30px;
    height: 3px;
    background: var(--red)
}

.solution-flow h3 {
    font-size: 18px;
    color: var(--blue);
    margin: 0 0 13px
}

.solution-flow p {
    font-size: 12px;
    line-height: 1.9;
    color: var(--muted);
    margin: 0
}

.nav-group {
    height: 100%;
    min-width: 91px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative
}

.nav-group>.nav-main {
    height: 100%;
    min-width: 91px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative
}

.nav-group>.nav-main:after {
    content: "";
    position: absolute;
    bottom: 0;
    width: 0;
    height: 3px;
    background: var(--red);
    transition: width .3s
}

.nav-group:hover>.nav-main,
.nav-group>.nav-main.active {
    color: var(--red)
}

.nav-group:hover>.nav-main:after,
.nav-group>.nav-main.active:after {
    width: 28px
}

.nav-dropdown {
    position: absolute;
    left: 50%;
    top: calc(100% - 1px);
    transform: translate(-50%, 8px);
    min-width: 190px;
    padding: 9px 0;
    background: #fff;
    box-shadow: 0 16px 28px rgba(18, 59, 132, .14);
    border-top: 3px solid var(--red);
    opacity: 0;
    visibility: hidden;
    transition: .25s;
    z-index: 20
}

.nav-group:hover .nav-dropdown,
.nav-group:focus-within .nav-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, 0)
}

.nav-dropdown a {
    display: block;
    padding: 11px 18px;
    font-size: 12px;
    color: #516274;
    white-space: nowrap
}

.nav-dropdown a:hover {
    background: #edf4fb;
    color: var(--blue)
}

@media(max-width:800px) {
    .solution-flow {
        grid-template-columns: 1fr 1fr
    }

    .solution-flow article {
        border-bottom: 1px solid #ced9e6
    }

    .solution-flow article:nth-child(2) {
        border-right: 0
    }

    .solution-flow article:after {
        display: none
    }
}

@media(max-width:480px) {
    .solution-flow {
        grid-template-columns: 1fr
    }

    .solution-flow article {
        border-right: 0
    }

    .flow-mark {
        margin-bottom: 34px
    }
}

.history-block {
    background: #f3f7fc;
    padding: 78px 0
}

.history-track {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border-top: 2px solid var(--blue);
    gap: 18px
}

.history-track article {
    padding: 26px 20px 8px;
    position: relative
}

.history-track article:before {
    content: "";
    position: absolute;
    left: 20px;
    top: -8px;
    width: 13px;
    height: 13px;
    border: 3px solid var(--red);
    background: #fff;
    border-radius: 50%
}

.history-track b {
    display: block;
    color: var(--blue);
    font: 21px Arial;
    margin-bottom: 18px
}

.history-track span {
    display: block;
    font-size: 12px;
    line-height: 1.9;
    color: var(--muted)
}

@media(max-width:800px) {
    .history-track {
        grid-template-columns: 1fr 1fr;
        gap: 10px
    }

    .history-track article {
        padding: 22px 12px
    }

    .history-track article:before {
        left: 12px
    }
}

@media(max-width:800px) {
    .nav.open {
        display: flex;
        align-items: stretch;
        padding: 10px 6vw
    }

    .nav-group {
        height: auto;
        min-width: 0;
        width: 100%;
        display: block
    }

    .nav-group>.nav-main {
        width: 100%;
        height: 58px;
        justify-content: space-between;
        border-bottom: 1px solid var(--line)
    }

    .nav-group>.nav-main:after {
        display: none
    }

    .nav-dropdown {
        position: static;
        transform: none;
        display: none;
        opacity: 1;
        visibility: visible;
        box-shadow: none;
        border: 0;
        background: #f5f8fc;
        padding: 0;
        min-width: 0
    }

    .nav-group:hover .nav-dropdown,
    .nav-group:focus-within .nav-dropdown {
        display: block;
        transform: none
    }

    .nav-dropdown a {
        padding: 11px 18px;
        font-size: 11px
    }

    .nav-main:before {
        content: "+";
        order: 2;
        color: var(--red);
        font-size: 18px
    }

    .nav-group:hover>.nav-main:before {
        content: "−"
    }
}