/* Reset */
*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family: 'Segoe UI', Roboto, sans-serif;
}
body{
    color:#333;
    line-height:1.6;
}
.container{
    width:92%;
    max-width:1200px;
    margin:0 auto;
}
a{
    text-decoration:none;
    color:inherit;
}
ul{
    list-style:none;
}

/* Buttons */
.btn{
    border:none;
    padding:12px 24px;
    border-radius:4px;
    font-weight:600;
    cursor:pointer;
    font-size:14px;
    transition:0.2s ease;
    display:inline-flex;
    align-items:center;
    gap:8px;
}
.primary-btn{
    background:#0066cc;
    color:#fff;
}
.primary-btn:hover{
    background:#0052a3;
}
.outline-btn{
    background:transparent;
    border:1px solid #fff;
    color:#fff;
}
.outline-btn:hover{
    background:rgba(255,255,255,0.1);
}
.text-btn{
    background:transparent;
    color:#0066cc;
    padding:8px 0;
}
.text-btn:hover{
    color:#0052a3;
}

/* Top Bar */
.top-bar{
    background:#121a29;
    color:#fff;
    padding:8px 0;
    font-size:13px;
}
.top-bar .container{
    display:flex;
    justify-content:space-between;
    flex-wrap:wrap;
    gap:10px;
}
.top-bar-left{
    display:flex;
    gap:20px;
}
.top-bar-right{
    display:flex;
    gap:20px;
}
.top-bar a{
    display:flex;
    align-items:center;
    gap:6px;
}

/* Header */
.site-header{
    background:#fff;
    box-shadow:0 2px 8px rgba(0,0,0,0.08);
    padding:16px 0;
    position:sticky;
    top:0;
    z-index:999;
}
.site-header .container{
    display:flex;
    align-items:center;
    justify-content:space-between;
}
.logo h1{
    font-size:20px;
    font-weight:800;
    line-height:1.1;
}
.logo small{
    font-size:10px;
    font-weight:500;
    color:#666;
}
.main-nav > ul{
    display:flex;
    gap:24px;
    align-items:center;
}
.main-nav a{
    font-weight:600;
    font-size:14px;
}
.mobile-menu-btn{
    display:none;
    background:none;
    border:none;
    font-size:22px;
    cursor:pointer;
}















/* Responsive Media Queries */
@media(max-width:992px){
    .hero-features{
        grid-template-columns:repeat(2,1fr);
    }
    .protect-inner{
        grid-template-columns:1fr;
    }
    .products-grid{
        grid-template-columns:repeat(2,1fr);
    }
    .stats-custom-section .container{
        grid-template-columns:1fr;
    }
}
@media(max-width:768px){
    .main-nav{
        display:none;
    }
    .mobile-menu-btn{
        display:block;
    }
    .hero h1{
        font-size:32px;
    }
    .products-grid{
        grid-template-columns:1fr;
    }
    .stats-wrap{
        grid-template-columns:1fr;
    }
}







/* Footer */
.site-footer{
    background:#121a29;
    color:#fff;
    padding:60px 0 30px;
}
.footer-grid{
    display:grid;
    grid-template-columns:1.5fr repeat(5,1fr);
    gap:30px;
}
.footer-logo h2{
    font-size:18px;
    line-height:1.1;
    margin-bottom:12px;
}
.footer-logo small{
    font-size:9px;
    opacity:0.7;
}
.footer-col p{
    font-size:13px;
    opacity:0.8;
    margin-bottom:16px;
}
.social-links{
    display:flex;
    gap:14px;
}
.social-links a{
    width:34px;
    height:34px;
    background:rgba(255,255,255,0.1);
    border-radius:50%;
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:16px;
}
.footer-col h4{
    font-size:15px;
    margin-bottom:16px;
}
.footer-col ul li{
    margin-bottom:8px;
}
.footer-col ul li a{
    font-size:13px;
    opacity:0.8;
}
.footer-col ul li a:hover{
    opacity:1;
}
.contact-list li{
    font-size:13px;
    opacity:0.8;
    margin-bottom:10px;
    display:flex;
    gap:8px;
}
.footer-bottom{
    margin-top:40px;
    padding-top:24px;
    border-top:1px solid rgba(255,255,255,0.15);
    display:flex;
    justify-content:space-between;
    font-size:12px;
    opacity:0.7;
}

/* Responsive Media Queries */
@media(max-width:992px){
    .stats-grid{
        grid-template-columns:repeat(2,1fr);
    }
    .story-inner{
        grid-template-columns:1fr;
    }
    .why-grid{
        grid-template-columns:repeat(3,1fr);
    }
    .timeline-items{
        grid-template-columns:repeat(2,1fr);
        gap:40px;
    }
    .timeline-line{
        display:none;
    }
    .certified-inner{
        grid-template-columns:1fr;
    }
    .logo-grid{
        grid-template-columns:repeat(3,1fr);
    }
    .cta-inner{
        grid-template-columns:1fr;
        text-align:center;
    }
    .footer-grid{
        grid-template-columns:repeat(3,1fr);
    }
}
@media(max-width:768px){
    .main-nav{
        display:none;
    }
    .mobile-menu-btn{
        display:block;
    }
    .about-hero h1{
        font-size:32px;
    }
    .stats-grid{
        grid-template-columns:1fr;
    }
    .why-grid{
        grid-template-columns:1fr;
    }
    .timeline-items{
        grid-template-columns:1fr;
    }
    .footer-grid{
        grid-template-columns:1fr;
    }
    .footer-bottom{
        flex-direction:column;
        gap:12px;
        text-align:center;
    }
}




.main-nav > ul {
    display: flex;
    align-items: center;
    gap: 38px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.main-nav > ul > li {
    position: relative;
}

.main-nav a {
    display: flex;
    align-items: center;
    gap: 7px;
    color: #222;
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.5px;
    padding: 25px 0;
    white-space: nowrap;
}
/* 下拉箭头 */
.main-nav .fa-chevron-down {
    font-size: 10px;
    transition: transform 0.3s ease;
}

/* 二级下拉菜单 */
.main-nav .sub-menu {
    position: absolute;
    top: 100%;
    left: 0;

    width: 240px;
    margin: 0;
    padding: 10px 0;

    list-style: none;

    background: #fff;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
    border-top: 3px solid #222;

    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);

    transition: all 0.25s ease;

    z-index: 999;
}

/* 二级菜单每一项 */
.main-nav .sub-menu li {
    display: block;
    width: 100%;
    margin: 0;
    padding: 0;
}

/* 二级菜单链接 */
.main-nav .sub-menu li a {
    display: block;
    width: 100%;
    box-sizing: border-box;

    padding: 13px 20px;

    color: #333;
    font-size: 14px;
    font-weight: 500;
    line-height: 1.4;

    text-decoration: none;
    white-space: nowrap;
}

/* hover */
.main-nav .sub-menu li a:hover {
    background: #f5f5f5;
    color: #111;
    padding-left: 25px;
}

/* 鼠标移入一级菜单，显示二级菜单 */
.main-nav > ul > li:hover > .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* 一级菜单 */
.main-nav > ul {
    display: flex;
    align-items: center;
    gap: 38px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.main-nav > ul > li {
    position: relative;
}

/* 一级菜单链接 */
.main-nav > ul > li > a {
    display: flex;
    align-items: center;
    gap: 7px;

    padding: 25px 0;

    color: #222;
    text-decoration: none;
    white-space: nowrap;
}

/* 箭头 */
.main-nav .fa-chevron-down {
    font-size: 10px;
    transition: transform 0.25s ease;
}

.main-nav > ul > li:hover > a .fa-chevron-down {
    transform: rotate(180deg);
}






/* =========================
   Mobile Menu Button
========================= */

.mobile-menu-toggle {
    display: none;

    width: 42px;
    height: 42px;

    padding: 8px;

    border: 0;
    background: transparent;

    cursor: pointer;
}

.mobile-menu-toggle span {
    display: block;

    width: 24px;
    height: 2px;

    margin: 5px auto;

    background: #222;

    transition: all .3s ease;
}


/* =========================
   Mobile Menu
========================= */

.mobile-menu {
    position: fixed;

    top: 0;
    right: -100%;

    width: 320px;
    max-width: 85%;

    height: 100vh;

    background: #fff;

    z-index: 1001;

    overflow-y: auto;

    transition: right .35s ease;
}


/* 打开菜单 */

.mobile-menu.active {
    /* right: 0; */

    left:0;
}


/* =========================
   Mobile Menu Header
========================= */

.mobile-menu-header {
    display: flex;

    align-items: center;
    justify-content: space-between;

    height: 70px;

    padding: 0 25px;

    border-bottom: 1px solid #eee;
}

.mobile-menu-header span {
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 1px;
}

.mobile-menu-close {
    width: 40px;
    height: 40px;

    border: 0;
    background: transparent;

    font-size: 20px;

    cursor: pointer;
}


/* =========================
   Mobile Navigation
========================= */

.mobile-nav > ul {
    margin: 0;
    padding: 10px 0;

    list-style: none;
}

.mobile-nav li {
    margin: 0;
    padding: 0;

    list-style: none;
}

.mobile-nav > ul > li > a {
    display: flex;

    align-items: center;
    justify-content: space-between;

    padding: 16px 25px;

    color: #222;

    font-size: 14px;
    font-weight: 600;

    text-decoration: none;

    border-bottom: 1px solid #eee;
}


/* =========================
   Mobile Sub Menu
========================= */

.mobile-sub-menu {
    display: none;

    margin: 0;
    padding: 5px 0;

    background: #f7f7f7;

    list-style: none;
}

.mobile-sub-menu li a {
    display: block;

    padding: 12px 25px 12px 40px;

    color: #555;

    font-size: 14px;

    text-decoration: none;
}

.mobile-sub-menu li a:hover {
    color: #111;
}


/* 展开 */

.mobile-has-children.active > .mobile-sub-menu {
    display: block;
}


/* 箭头 */

.mobile-has-children > a i {
    font-size: 10px;

    transition: transform .3s ease;
}

.mobile-has-children.active > a i {
    transform: rotate(180deg);
}


/* =========================
   Overlay
========================= */

.mobile-menu-overlay {
    position: fixed;

    inset: 0;

    background: rgba(0, 0, 0, .45);

    z-index: 1000;

    opacity: 0;
    visibility: hidden;

    transition: all .3s ease;
}

.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}


/* =========================
   Mobile Breakpoint
========================= */

@media (max-width: 991px) {

    .main-nav {
        display: none;
    }

    .mobile-menu-toggle {
        display: block;
    }

}


/* Desktop 隐藏 Mobile Menu */

@media (min-width: 992px) {

    .mobile-menu,
    .mobile-menu-overlay {
        display: none;
    }

}










.footer-qrcodes {
    display: flex;
    gap: 20px;
    margin-top: 20px;
}

.footer-qrcode {
    text-align: center;
}

.footer-qrcode img {
    width: 100px;
    height: 100px;
    object-fit: cover;
    background: #fff;
    padding: 5px;
    border-radius: 4px;
}

.footer-qrcode span {
    display: block;
    margin-top: 7px;
    font-size: 13px;
    color: #aaa;
}