/* ====================== Global Reset & Base ====================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: 'Arial', sans-serif;
    color: #333333;
    line-height: 1.6;
    font-size: 15px;
}
ul {
    list-style: none;
}
a {
    text-decoration: none;
    color: inherit;
    transition: all 0.25s ease;
}
img {
    max-width: 100%;
    height: auto;
    display: block;
}
.container {
    width: 92%;
    max-width: 1240px;
    margin: 0 auto;
}
.flex-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
}
.section {
    padding: 70px 0;
}
.text-center {
    text-align: center;
}
.white-text {
    color: #ffffff;
}
.dark-bg {
    background-color: #111113;
}
.text-orange {
    color: #ff5800;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 11px 24px;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 14px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}
.btn-primary-orange {
    background-color: #ff5800;
    color: #fff;
}
.btn-primary-orange:hover {
    background-color: #e64e00;
    transform: translateY(-2px);
}
.btn-white-outline {
    background: transparent;
    color: #fff;
    border: 1px solid #fff;
}
.btn-white-outline:hover {
    background: #fff;
    color: #111;
}
.btn-black-solid {
    background-color: #111113;
    color: #fff;
}
.btn-black-solid:hover {
    background-color: #222;
    transform: translateY(-2px);
}

/* Section Common */
.section-label {
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #ff5800;
    font-weight: 600;
    display: inline-block;
    margin-bottom: 8px;
}
.section-heading h2 {
    font-size: 30px;
    margin-bottom: 12px;
}
.heading-divider {
    width: 40px;
    height: 2px;
    background: #ff5800;
    margin: 8px auto 25px;
}

/* ====================== Top Bar ====================== */
.site-topbar {
    background: #111113;
    color: #fff;
    padding: 8px 0;
    font-size: 13px;
}
.topbar-wrap {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.topbar-right {
    display: flex;
    gap: 22px;
    align-items: center;
}
.topbar-right a {
    color: #fff;
}
.topbar-right a:hover {
    color: #ff5800;
}

/* ====================== Header Navigation ====================== */
.site-header {
    background-color: #111113;
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 999;
}
.header-wrap {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.site-logo img {
    height: 46px;
}

.site-logo span {
   color: #fff;
}






.main-navigation {
    display: flex;
    align-items: center;
    gap: 30px;
}
.nav-menu {
    display: flex;
    gap: 28px;
    text-transform: uppercase;
    font-size: 14px;
    font-weight: 500;
    color: #fff;
}
.nav-menu .menu-item.active a {
    color: #ff5800;
}
.nav-menu a:hover {
    color: #ff5800;
}
.mobile-menu-toggle {
    display: none;
    background: transparent;
    border: none;
    color: white;
    font-size: 24px;
}




/* ====================== Footer ====================== */
.site-footer {
    background:#111113;
    color:#bbbbbb;
    padding:60px 0 30px;
}
.footer-top-wrap {
    display:grid;
    grid-template-columns: repeat(5,1fr);
    gap:32px;
}

.footer-widget img{

    width: 50px;
    height: 50px;
}



.footer-widget h4 {
    color:#fff;
    margin-bottom:16px;
    font-size:16px;
}
.footer-widget p {
    margin-bottom:10px;
    font-size:13px;
}
.footer-widget li {
    margin-bottom:8px;
    font-size:13px;
}
.footer-widget a:hover {
    color:#ff5800;
}
.footer-social {
    display:flex;
    gap:10px;
    margin-top:14px;
}
.footer-social a {
    width:32px;
    height:32px;
    border:1px solid #444;
    display:flex;
    align-items:center;
    justify-content:center;
    color:#fff;
}
.footer-bottom-wrap {
    margin-top:40px;
    padding-top:25px;
    border-top:1px solid #282828;
    display:flex;
    justify-content:space-between;
    font-size:13px;
}
.footer-bottom-links a {
    margin-left:16px;
}

/* ====================== Responsive Media Query ====================== */
@media screen and (max-width: 1200px) {
    .products-grid {
        grid-template-columns: repeat(3,1fr);
    }
}
@media screen and (max-width: 1024px) {
    .nav-menu {
        display: none;
    }
    .mobile-menu-toggle {
        display:block;
    }
    .who-row, .cert-row {
        flex-direction:column;
    }
    .values-grid {
        grid-template-columns: repeat(3,1fr);
    }
    .factory-gallery-grid {
        grid-template-columns: repeat(3,1fr);
    }
    .custom-mesh-section .flex-row {
        flex-direction:column;
    }
    .custom-mesh-text-col {
        padding-left:0;
        margin-top:30px;
    }
    .about-preview-section .flex-row {
        flex-direction:column;
    }
    .about-preview-text-col {
        padding-left:0;
        margin-top:30px;
    }
    .footer-top-wrap {
        grid-template-columns: repeat(3,1fr);
    }
}
@media screen and (max-width:768px) {
    .hero-content h1 {
        font-size:36px;
    }
    .hero-features {
        grid-template-columns: repeat(2,1fr);
    }
    .feature-grid {
        grid-template-columns: repeat(2,1fr);
    }
    .values-grid {
        grid-template-columns: repeat(2,1fr);
    }
    .factory-gallery-grid {
        grid-template-columns: repeat(2,1fr);
    }
    .cert-logo-grid {
        grid-template-columns: repeat(2,1fr);
    }
    .custom-features-grid {
        grid-template-columns: repeat(2,1fr);
    }
    .about-data-grid {
        grid-template-columns: repeat(2,1fr);
    }
    .service-grid {
        grid-template-columns: repeat(2,1fr);
    }
    .cta-row {
        flex-direction:column;
        gap:20px;
        text-align:center;
    }
    .footer-top-wrap {
        grid-template-columns:1fr;
    }
    .footer-bottom-wrap {
        flex-direction:column;
        gap:12px;
        text-align:center;
    }
    .hero-buttons {
        flex-direction:column;
    }
}
@media screen and (max-width:480px) {
    .values-grid, .factory-gallery-grid, .products-grid {
        grid-template-columns:1fr;
    }
}











/* ====================== 导航下拉菜单 二级子菜单 ====================== */
.menu-item-has-children {
    position: relative;
}
.menu-item-has-children > a {
    display: flex;
    align-items: center;
    gap: 6px;
}
.menu-item-has-children .submenu {
    position: absolute;
    top: 100%;
    left: 0;
    background: #ffffff;
    min-width: 220px;
    box-shadow: 0 6px 18px rgba(0,0,0,0.12);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.25s ease;
    z-index: 9999;
}
.menu-item-has-children:hover .submenu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.submenu li {
    padding: 0;
}
.submenu li a {
    display: block;
    padding: 12px 20px;
    color: #333;
    text-transform: uppercase;
    font-size: 13px;
}
.submenu li a:hover {
    background-color: #f7f7f7;
    color: #ff5800;
}

/* ====================== 移动端汉堡菜单样式 ====================== */
.mobile-menu-canvas {
    position: fixed;
    top: 0;
    right: 0;
    width: 300px;
    height: 100vh;
    background-color: #111113;
    z-index: 99999;
    transform: translateX(100%);
    transition: transform 0.35s ease;
    padding: 30px 25px;
    overflow-y: auto;
}
.mobile-menu-canvas.open {
    transform: translateX(0);
}
.mobile-menu-close {
    background: transparent;
    border: none;
    color: #fff;
    font-size: 26px;
    position: absolute;
    top: 16px;
    right: 20px;
    cursor: pointer;
}
.mobile-nav-menu {
    margin-top: 40px;
}
.mobile-nav-menu > li {
    border-bottom: 1px solid #282828;
}
.mobile-nav-menu > li > a {
    display: block;
    padding: 14px 0;
    color: #fff;
    text-transform: uppercase;
    font-size: 14px;
}
.mobile-nav-menu > li.active > a {
    color: #ff5800;
}
.mobile-nav-menu a:hover {
    color: #ff5800;
}
/* 移动端下拉折叠 */
.mobile-menu-item-has-children > a {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.mobile-submenu {
    display: none;
    padding-left: 16px;
}
.mobile-submenu.open {
    display: block;
}
.mobile-submenu li a {
    padding: 10px 0;
    display: block;
    font-size:13px;
    color:#bbbbbb;
}
/* 遮罩层 */
.menu-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index:99998;
    opacity:0;
    visibility:hidden;
    transition: all 0.3s ease;
}
.menu-overlay.open {
    opacity:1;
    visibility:visible;
}