*{margin:0;padding:0;box-sizing:border-box}
.about-banner {
    width:100%;
    height:750px;
    position:relative;
    color:#fff;
    font-family:"Microsoft Yahei",sans-serif;
}
.about-bg {
    position:absolute;
    left:0;
    top:0;
    width:100%;
    height:100%;
    background-position:center center;
    background-size:cover;
    background-repeat:no-repeat;
}
.top-fixed-bar {
    position: absolute;
    left: 0;
    top: 60px;
    width: 100%;
    padding: 0 45px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 9999 !important;
}
.top-fixed-bar a,
.top-fixed-bar div {
    pointer-events: auto;
}
.menu-btn {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 40px;
    height: 28px;
    position: relative;
    cursor: pointer;
}
.menu-btn::before,
.menu-btn::after {
    content: "";
    width: 100%;
    height: 2px;
    background: #D4AF37;
}
.menu-btn::before {
    margin-bottom: 8px;
}
.menu-btn::after {
    margin-top: 8px;
}
.menu-btn span {
    display: block;
    width: 100%;
    height: 2px;
    background: #D4AF37;
}
.banner-brand-text {
    z-index: 1;
    text-align: center;
}
.banner-brand-text .brand-en {
    font-family: 'Times New Roman', serif;
    font-style: italic;
    font-size: 72px;
    color: #D4AF37;
    letter-spacing: 2px;
    font-weight: 500;
}
.banner-brand-text .brand-en sup {
    font-size: 24px;
    margin-left: 8px;
    vertical-align: top;
}
.top-right-box {
    display: flex;
    align-items: center;
    gap: 25px;
}
.lang-box {
    display: none;
}
.arrow {
    width: 7px;
    height: 7px;
    border: 1px solid #fff;
    border-top: none;
    border-left: none;
    transform: rotate(45deg);
}
.search-btn {
    display: none;
}
.about-title {
    position:absolute;
    top:50%;
    left:120px;
    transform:translateY(-50%);
    z-index:2;
}
.about-title h1 {
    font-size:48px;
    font-weight:normal;
    margin-bottom:10px;
    color: #fff;
}
.about-title p {
    font-size:32px;
    opacity:.9;
}
.about-subnav {
    position:absolute;
    bottom:0;
    left:0;
    right:0;
    display:flex;
    justify-content:center;
    gap:80px;
    padding:30px 0;
    border-top:1px solid rgba(255,255,255,.2);
    z-index:2;
}
.about-subnav a {
    color: #000;
    text-decoration: none;
    font-size: 18px;
    letter-spacing: 2px;
    position: relative;
    transition: all 0.3s ease;
}
.about-subnav a:hover {
    color: #d4af37;
}
.about-subnav a.active {
    color: #d4af37;
}
.about-subnav a.active::after {
    content: '';
    width: 30px;
    height: 2px;
    background: #d4af37;
    position: absolute;
    left: 50%;
    bottom: -8px;
    transform: translateX(-50%);
}
.menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 9998;
    backdrop-filter: blur(5px);
}
.menu-overlay.active {
    display: block;
    animation: fadeInMenu 0.5s ease;
}
@keyframes fadeInMenu {
    from { opacity: 0; }
    to { opacity: 1; }
}
.fullscreen-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    overflow: hidden;
}
.fullscreen-menu.active {
    display: block;
}
.menu-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    transform: scale(1.05);
    transition: transform 1.5s ease-out;
}
.fullscreen-menu.active .menu-background {
    transform: scale(1);
}
.menu-overlay-inner {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.6) 0%, rgba(0, 0, 0, 0.4) 50%, rgba(0, 0, 0, 0.7) 100%);
}
.menu-container {
    position: relative;
    z-index: 2;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 100px 40px 80px;
    box-sizing: border-box;
    overflow: hidden;
}
#fullscreen-menu .banner-brand-text {
    position: absolute;
    top: 40px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
}
#fullscreen-menu .banner-brand-text .brand-en {
    font-family: 'Times New Roman', serif;
    font-style: italic;
    font-size: 72px;
    color: #D4AF37 !important;
    letter-spacing: 2px;
    font-weight: 500;
}
#fullscreen-menu .banner-brand-text .brand-en sup {
    font-size: 24px;
    margin-left: 8px;
    vertical-align: top;
}
.menu-nav-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 30px;
    max-width: 1200px;
    width: 100%;
    overflow: hidden;
}
.nav-column {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    opacity: 0;
    transform: translateY(20px);
    animation: slideUpColumn 0.6s ease forwards;
}
.nav-column:nth-child(1) { animation-delay: 0.1s; }
.nav-column:nth-child(2) { animation-delay: 0.15s; }
.nav-column:nth-child(3) { animation-delay: 0.2s; }
.nav-column:nth-child(4) { animation-delay: 0.25s; }
.nav-column:nth-child(5) { animation-delay: 0.3s; }
.nav-column:nth-child(6) { animation-delay: 0.35s; }
@keyframes slideUpColumn {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
.nav-title {
    font-family: "SimSun", "STSong", "Noto Serif SC", serif;
    font-size: 28px;
    color: #ffffff;
    text-decoration: none;
    letter-spacing: 10px;
    margin-bottom: 30px;
    font-weight: 300;
    transition: all 0.3s ease;
    position: relative;
}
.nav-title::after {
    content: "";
    position: absolute;
    bottom: -8px;
    left: 50%;
    width: 0;
    height: 1px;
    background: rgba(212, 175, 55, 0.8);
    transition: width 0.4s ease;
    transform: translateX(-50%);
}
.nav-title:hover {
    color: #D4AF37;
    letter-spacing: 12px;
}
.nav-title:hover::after {
    width: 50%;
}
.nav-sub-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}
.nav-sub-item {
    font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
    font-size: 15px;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    letter-spacing: 3px;
    transition: all 0.3s ease;
    position: relative;
}
.nav-sub-item::after {
    content: "";
    position: absolute;
    bottom: -4px;
    left: 50%;
    width: 0;
    height: 1px;
    background: rgba(255, 255, 255, 0.5);
    transition: width 0.3s ease;
    transform: translateX(-50%);
}
.nav-sub-item:hover {
    color: #ffffff;
}
.nav-sub-item:hover::after {
    width: 80%;
}
.menu-footer {
    position: absolute;
    bottom: 60px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    opacity: 0;
    animation: fadeInUpMenu 0.8s ease 0.8s forwards;
}
@keyframes fadeInUpMenu {
    from { opacity: 0; transform: translateX(-50%) translateY(20px); }
    to { opacity: 1; transform: translateX(-50%) translateY(0); }
}
.footer-text {
    font-family: "SimSun", "STSong", "Noto Serif SC", serif;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    letter-spacing: 6px;
    margin: 0;
    font-weight: 300;
}
.menu-close {
    position: absolute;
    top: 40px;
    right: 40px;
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: all 0.3s ease;
    z-index: 3;
}
.menu-close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: rotate(90deg);
}
.menu-close span {
    position: absolute;
    width: 20px;
    height: 1px;
    background: rgba(255, 255, 255, 0.8);
    transition: background 0.3s ease;
}
.menu-close:hover span {
    background: #D4AF37;
}
.menu-close span:first-child {
    transform: rotate(45deg);
}
.menu-close span:last-child {
    transform: rotate(-45deg);
}
@media (max-width: 768px) {
    .menu-container {
        padding: 80px 20px 60px;
    }
    #fullscreen-menu .banner-brand-text .brand-en {
        font-size: 48px;
    }
    .menu-nav-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }
    .nav-title {
        font-size: 22px;
        letter-spacing: 8px;
        margin-bottom: 20px;
    }
    .nav-sub-item {
        font-size: 13px;
        letter-spacing: 2px;
    }
    .footer-text {
        font-size: 12px;
        letter-spacing: 4px;
        padding: 0 20px;
    }
    .menu-close {
        width: 36px;
        height: 36px;
        top: 25px;
        right: 25px;
    }
    .menu-close span {
        width: 16px;
    }
}
@media (max-width: 480px) {
    #fullscreen-menu .banner-brand-text .brand-en {
        font-size: 36px;
    }
    .menu-nav-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .nav-title {
        font-size: 18px;
        letter-spacing: 6px;
    }
    .nav-sub-list {
        gap: 12px;
    }
    .footer-text {
        font-size: 11px;
        letter-spacing: 3px;
    }
}

.company-intro-section {
    width: 100%;
    height: 100vh;
    display: flex;
    flex-direction: column;
    margin: 0;
    padding: 0;
    background: #fff;
    overflow: hidden;
}

.company-intro-top {
    width: 100%;
    height: 50%;
    position: relative;
    display: flex;
    align-items: flex-end;
    justify-content: flex-start;
    margin: 0;
    padding-left: 8%;
    padding-bottom: 90px;
    overflow: hidden;
}

.company-intro-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.company-intro-content {
    position: relative;
    z-index: 2;
    text-align: left;
    padding: 0;
}

.company-intro-title-cn {
    margin: 0 0 18px;
    font-size: 70px;
    line-height: 1.15;
    color: #fff;
    font-weight: 700;
    letter-spacing: 2px;
}

.company-intro-title-en {
    margin: 0;
    font-size: 34px;
    line-height: 1.3;
    color: #d4af37;
    letter-spacing: 3px;
    text-transform: uppercase;
}

.company-intro-bottom {
    position: relative;
    z-index: 2;
    width: 100%;
    margin: 0;
    padding: 60px 8%;
    display: flex;
    align-items: center;
}

.company-intro-bottom-wrap {
    position: relative;
    width: 100%;
    flex: 1;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.company-intro-bottom-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.company-intro-text {
    max-width: 1280px;
    margin: 0 auto;
    font-size: 24px;
    line-height: 2.1;
    color: #333;
    text-align: left;
    white-space: pre-wrap;
    text-wrap: pretty;
}

.company-intro-richtext {
    white-space: normal;
    word-break: break-word;
}

.company-intro-richtext p {
    margin: 0 0 18px;
}

.company-intro-richtext p:last-child {
    margin-bottom: 0;
}

.company-intro-richtext img {
    display: block;
    max-width: 100% !important;
    height: auto !important;
    margin: 24px auto;
}

.company-intro-richtext ul,
.company-intro-richtext ol {
    margin: 0 0 18px 1.5em;
}

.company-intro-richtext li {
    margin-bottom: 10px;
}

.company-intro-richtext table {
    width: 100% !important;
    max-width: 100%;
}

.product-advantage-section {
    height: auto;
    min-height: 100vh;
    overflow: visible;
}

.product-advantage-section .company-intro-top {
    height: 50vh;
    min-height: 420px;
}

.product-advantage-section .company-intro-bottom-wrap {
    flex: none;
    min-height: 50vh;
    align-items: stretch;
    overflow: visible;
}

.product-advantage-section .company-intro-bottom {
    min-height: 50vh;
    align-items: flex-start;
    padding-top: 80px;
    padding-bottom: 80px;
}

.product-advantage-section .company-intro-bottom-bg {
    background-position: center top;
}

.honor-cert-section {
    --honor-content-width: min(1320px, 84vw);
    --honor-small-card-height: 210px;
    width: 100%;
    background: #fff;
    height: auto;
    min-height: 100vh;
    overflow: visible;
}

.honor-cert-bottom {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: stretch;
}

.honor-cert-bottom > * {
    width: 100%;
    flex: none;
}

.honor-cert-header,
.honor-cert-gallery-main,
.honor-cert-gallery-strip,
.honor-cert-text,
.honor-cert-gallery-bottom {
    width: var(--honor-content-width);
    margin-left: auto;
    margin-right: auto;
}

.honor-cert-header {
    text-align: left;
    position: relative;
    z-index: 2;
}

.honor-cert-title-cn {
    margin: 0 0 16px;
    font-size: 64px;
    line-height: 1.1;
    color: #fff;
    font-weight: 700;
    letter-spacing: 2px;
}

.honor-cert-title-en {
    margin: 0;
    font-size: 30px;
    line-height: 1.3;
    color: #d4af37;
    letter-spacing: 3px;
    text-transform: uppercase;
}

.honor-cert-gallery-main {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 0;
    margin-bottom: 0;
}

.honor-cert-left,
.honor-cert-right,
.honor-cert-gallery-strip,
.honor-cert-gallery-bottom {
    gap: 0;
}

.honor-cert-left {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.honor-cert-right {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    grid-template-rows: repeat(2, var(--honor-small-card-height));
}

.honor-cert-card,
.honor-cert-strip-item {
    position: relative;
    overflow: hidden;
    background: #f5f5f5;
}

.honor-cert-card img,
.honor-cert-strip-item img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
}

.honor-cert-card-tall {
    height: calc(var(--honor-small-card-height) * 2);
}

.honor-cert-card-small,
.honor-cert-strip-item {
    height: var(--honor-small-card-height);
}

.honor-cert-gallery-strip {
    display: flex;
    margin-bottom: 44px;
}

.honor-cert-strip-item {
    flex: 1 1 0;
}

.honor-cert-strip-item img {
    object-fit: contain;
    object-position: center;
    background: #fff;
}

.honor-cert-text {
    margin-bottom: 48px;
    font-size: 24px;
    line-height: 2;
    color: #333;
    white-space: pre-wrap;
    text-wrap: pretty;
}

.honor-cert-gallery-bottom {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
}

.honor-cert-card-bottom {
    aspect-ratio: 4 / 3;
}

.cooperation-section {
    width: 100%;
    margin: 0;
    padding: 0;
    position: relative;
}

.section-top-bg {
    width: 100%;
    height: 700px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.section-bottom-bg {
    width: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    padding: 80px 20px;
    box-sizing: border-box;
    position: relative;
}

.section-content {
    max-width: 1200px;
    margin: 0 auto;
    color: #fff;
    font-size: 36px;
    line-height: 1.8;
    text-align: center;
}

@media (max-width: 768px) {
    .company-intro-top {
        height: 40%;
        padding-left: 5%;
        padding-bottom: 20px;
    }
    .company-intro-content {
        padding: 0;
    }
    .company-intro-title-cn {
        font-size: 34px;
        margin-bottom: 10px;
    }
    .company-intro-title-en {
        font-size: 18px;
        letter-spacing: 2px;
    }
    .company-intro-bottom {
        padding: 30px 5%;
    }
    .company-intro-text {
        font-size: 16px;
        line-height: 1.9;
        text-align: left;
    }
    .company-intro-richtext p {
        margin-bottom: 14px;
    }
    .company-intro-richtext img {
        margin: 18px auto;
    }
    .product-advantage-section .company-intro-top {
        height: 40vh;
        min-height: 260px;
    }
    .product-advantage-section .company-intro-bottom-wrap,
    .product-advantage-section .company-intro-bottom {
        min-height: auto;
    }
    .product-advantage-section .company-intro-bottom {
        padding-top: 40px;
        padding-bottom: 40px;
    }
    .honor-cert-section {
        --honor-content-width: 90vw;
        --honor-small-card-height: 108px;
    }
    .honor-cert-header {
    }
    .honor-cert-title-cn {
        font-size: 34px;
        margin-bottom: 10px;
    }
    .honor-cert-title-en {
        font-size: 18px;
        letter-spacing: 2px;
    }
    .honor-cert-gallery-main {
        grid-template-columns: 1fr;
        gap: 0;
        margin-bottom: 0;
    }
    .honor-cert-left,
    .honor-cert-right,
    .honor-cert-gallery-bottom {
        gap: 0;
    }
    .honor-cert-left {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .honor-cert-right {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        grid-template-rows: repeat(2, var(--honor-small-card-height));
    }
    .honor-cert-card-tall {
        height: calc(var(--honor-small-card-height) * 2 + 8px);
    }
    .honor-cert-gallery-strip {
        margin-bottom: 28px;
        overflow-x: auto;
    }
    .honor-cert-strip-item {
        min-width: 96px;
        flex-basis: 96px;
    }
    .honor-cert-text {
        margin-bottom: 32px;
        font-size: 16px;
        line-height: 1.9;
    }
    .honor-cert-gallery-bottom {
        grid-template-columns: 1fr;
    }
    .honor-cert-card-bottom {
        aspect-ratio: 16 / 9;
    }
    .section-top-bg {
        height: 450px;
    }
    .section-bottom-bg {
        padding: 60px 15px;
    }
    .section-content {
        font-size: 16px;
    }
}