/* =============================================
   页面顶部CSS文件 - top.css
   包含：全局样式重置、页面顶部、Logo区域
   ============================================= */

/* =============================================
   全局CSS变量定义
   ============================================= */
:root {
    /* 品牌色系 */
    --brand-primary: #0066CC;
    --brand-light: #4A9EFF;
    --brand-lighter: #2B8BFF;
    --brand-lightest: #5AAFFF;
    
    /* 品牌色透明度变体 */
    --brand-alpha-08: rgba(0, 102, 204, 0.08);
    --brand-alpha-15: rgba(0, 102, 204, 0.15);
    --brand-alpha-25: rgba(0, 102, 204, 0.25);
    
    /* 品牌色渐变 */
    --brand-gradient: linear-gradient(90deg, var(--brand-primary) 0%, var(--brand-light) 100%);
    --brand-gradient-hover: linear-gradient(90deg, var(--brand-lighter) 0%, var(--brand-primary) 100%);
    --brand-gradient-135: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-lighter) 100%);
    --brand-gradient-180: linear-gradient(180deg, var(--brand-light) 0%, var(--brand-primary) 100%);
}

/* =============================================
   全局样式重置与基础设置
   ============================================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}
/* 格展网络（gezhancn.com）做专业企业网站建设平台 */
/* CSS Document*/
html {
	height: 100%;
	border: none;
}
body {
	height: 100%;
	min-width: 1200px;
	border: none;
	padding: 0;
	margin: 0;
	text-align: left;
	font-size: 14px;
	color: #666;
	font-family: Arial, "microsoft yahei";
	background: #FFF;
}
div, ul, li, img, dl, dd, dt, p {
	padding: 0;
	margin: 0;
	border: none;
}
ul, dl {
	list-style-type: none;
}
h1, h2, h3, h4, h5 {
	margin: 0;
	padding: 0;
	font-weight: normal;
}
a {
	color: #666;
	text-decoration: none;
}
a:hover {
	color: #0d77e5;
	text-decoration: none;
}
.clear {
	clear: both;
}
.fl {
	float: left;
	display: inline;
}
.fr {
	float: right;
	display: inline;
}
.container {
    margin: 0 auto;
    padding: 0 10%;
    box-sizing: border-box;
}

/*响应式设计*/
@media (max-width: 1200px) {
    .container {
        padding: 0 5%;
    }
}

@media (max-width: 800px) {
    .container {
        padding: 0 3%;
    }
}

/* =============================================
   页面顶部样式
   ============================================= */
.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(0, 116, 181, 0.85) 0%, rgba(0, 0, 0, 0.6) 100%);
  z-index: 1;
}

.header {
    background-color: #ffffff;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    position: relative;
    z-index: 1000;
    transition: all 0.2s ease;
    overflow: hidden;
}

/* 头部淡蓝色半圆背景 */
.header::before {
    background-image: url("/images/top-bg.png");
}

.header .container {
    display: flex;
    align-items: center;
    height: 72px;
    padding: 0;
}

/* Logo区域 */
.logo {
    display: flex;
    flex-direction: row;
    align-items: center;
    padding: 14px 25%;
    width: 100%;
    gap: 20px;
    background-image: url("/images/top-bg.png");
    background-repeat: no-repeat;
    background-size: cover;
    background-color: #f6fbff;
}

.logo a,
.logo .logo-link {
    line-height: normal;
    text-decoration: none;
}

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

.logo-img {
    width: 64px;
    height: auto;
    display: block;
    border-radius: 4px;
}

.logo-brand {
    display: flex;
    flex-direction: column;
    justify-content: center;
    line-height: 1.2;
}

.logo-cn {
    font-size: 28px;
    font-weight: 700;
    color: #1f8be0;
    letter-spacing: 4px;
}

.logo-en {
    font-size: 14px;
    font-weight: 600;
    color: #1f8be0;
    letter-spacing: 3px;
    margin-top: 2px;
}

.logo-divider {
    width: 1px;
    height: 56px;
    background: #cfd8e3;
    flex-shrink: 0;
}

.logo-slogan {
    flex: 1;
    min-width: 0;
}

.slogan-main {
    font-size: 22px;
    font-weight: 700;
    color: #1a3a8f;
    margin: 0;
    letter-spacing: 1px;
    line-height: 1.3;
}

.slogan-sub {
    display: inline-block;
    font-size: 14px;
    color: #4a4a4a;
    margin: 8px 0 0;
    padding: 4px 14px;
    background: #e1ecf8;
    border-radius: 25px;
    letter-spacing: 0.5px;
}

.logo-text {
    font-size: 22px;
    font-weight: 600;
    color: #1a1a1a;
    letter-spacing: -0.02em;
}

/* Logo区域 - 响应式 */
@media (max-width: 768px) {
    .logo {
        gap: 12px;
        padding: 12px 16px;
        justify-content: center;
    }
    .logo-divider,
    .logo-slogan { display: none; }
    .logo-cn { font-size: 22px; letter-spacing: 2px; }
    .logo-en { font-size: 12px; letter-spacing: 2px; }
    .logo-img { width: 48px; }
}

@media (max-width: 1199px) {
    .header .container {
        justify-content: space-between;
    }
    
    .logo {
        flex: 0 0 auto;
    }
}

@media (min-width: 1200px) {
    .header .container {
        flex-direction: column;
        align-items: stretch;
        height: auto;
        width: auto;
    }

    .logo {
        justify-content: center;
    }
}

@media (max-width: 1024px) {
    .nav-list {
        gap: 20px;
    }
    
    .dropdown-menu {
        min-width: 600px;
    }
}

@media (max-width: 768px) {
    .nav {
        margin-left: 0;
        margin-top: 15px;
    }
    
    .nav-list {
        flex-wrap: wrap;
        gap: 15px;
        justify-content: center;
    }
    
    .dropdown-menu {
        position: fixed;
        left: 0;
        right: 0;
        min-width: auto;
        margin: 0 20px;
        width: 100%;
    }
    
    .promo-grid {
        grid-template-columns: repeat(1, 1fr);
        gap: 16px;
    }
}

@media (max-width: 1200px) {
    .promo-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }
}

@media (max-width: 767px) {
    .product-center-dropdown .product-dropdown-container {
        flex-direction: column;
        min-height: auto;
        gap: 12px;
        padding: 16px 20px;
    }
    
    .product-center-dropdown .product-dropdown-body {
        flex-direction: column;
    }
    
    .product-center-dropdown .product-categories {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid #e9ecef;
    }
    
    .product-center-dropdown .category-list {
        display: flex;
        overflow-x: auto;
    }
    
    .product-center-dropdown .category-item {
        flex-shrink: 0;
        border-right: 1px solid #e9ecef;
    }
    
    .product-center-dropdown .category-item:last-child {
        border-right: none;
    }
}

@media (max-width: 600px) {
    .contact-text {
        display: none;
    }
    
    .contact-btn {
        width: 100%;
        padding: 6px 10px;
        gap: 8px;
    }

    .header-search-form {
        flex: 1;
        min-width: 0;
        gap: 6px;
    }

    .header-search-form .s_t {
        width: 100%;
        min-width: 0;
        padding: 0 10px;
    }

    .header-search-form .so {
        padding: 0 12px;
        font-size: 12px;
    }
}


/* =============================================
   Header 菜单导航样式
   ============================================= */
/* 主导航菜单 */
.nav {
    width: 100%;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background-image: url(../../images/nav_bk.jpg);
    background-size: contain;
    background-position: center;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    padding: 24px 0;
    text-decoration: none;
    color: #ffffff;
    font-size: 15px;
    font-weight: 500;
    letter-spacing: -0.01em;
    transition: color 0.2s ease;
}

.nav-link:hover {
    color: #ffffff;
    background-color: #f9811e;
    border-radius: 20px;
}

/* 下拉箭头 */
.arrow-down {
    margin-left: 6px;
    font-style: normal;
    opacity: 0.6;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.arrow-down::before {
    content: '▼';
    font-size: 9px;
    color: currentColor;
}

.nav-item:hover .arrow-down {
    opacity: 1;
    transform: translateY(1px);
}

/* 下拉菜单样式 */
.dropdown-menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    width: 100%;
    margin: 0;
    background-color: #ffffff;
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-top: none;
    border-radius: 0 0 12px 12px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all 0.2s ease;
    z-index: 1001;
    backdrop-filter: blur(20px);
}

/* 悬停显示下拉菜单 */
.nav-item:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* 背景模糊效果 */
.blur-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.02);
    backdrop-filter: blur(2px);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
}

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

/* 页面模糊状态 */
body.dropdown-open .main {
    filter: blur(3px);
    transition: filter 0.3s ease;
}

body.dropdown-open .header {
    position: relative;
    z-index: 1002;
}

/* 简单二级下拉菜单样式 */
.simple-dropdown-list {
    list-style: none;
    margin: 0;
    padding: 16px 0;
    min-width: 220px;
}

.simple-dropdown-list li a {
    display: block;
    padding: 12px 24px;
    color: #1a1a1a;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.simple-dropdown-list li a:hover {
    background: rgba(0, 114, 206, 0.08);
    color: var(--brand-primary);
}

/* 卡片式下拉菜单样式 */
.promo-dropdown .promo-container {
    padding: 32px 40px;
}

.promo-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 24px;
    color: #1a1a1a;
}

.promo-title a {
    text-decoration: none;
    color: #1a1a1a;
    display: inline-flex;
    align-items: center;
    transition: color 0.2s ease;
}

.promo-title a:hover {
    color: var(--brand-primary);
}

.arrow-right {
    font-style: normal;
    margin-left: 8px;
}

.arrow-right::before {
    content: '>';
    font-size: 16px;
    font-weight: bold;
}

.promo-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 28px;
    justify-items: stretch;
}

.promo-item a {
    display: block;
    padding: 20px;
    border: none;
    border-radius: 8px;
    text-decoration: none;
    color: #1a1a1a;
    transition: all 0.2s ease;
    height: 100%;
    background: transparent;
}

.promo-item a:hover {
    background: rgb(125 180 240 / 5%);
    color: var(--brand-primary);
    transform: translateY(-1px);
}

.promo-item h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 8px;
    color: #1a1a1a;
}

.promo-item a:hover h4 {
    color: var(--brand-primary);
}

.promo-item p {
    font-size: 13px;
    color: #666666;
    line-height: 1.5;
}

/* 产品中心下拉菜单特殊样式 */
.dropdown-menu.product-center-dropdown {
    overflow: hidden;
}

.product-center-dropdown .product-dropdown-container {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 24px 32px;
    min-height: 280px;
    box-sizing: border-box;
    background-color: rgba(255, 255, 255, 0.92);
}

.product-center-dropdown .product-dropdown-body {
    display: flex;
    width: 100%;
    min-width: 0;
}

.product-center-dropdown .product-categories {
    width: 200px;
    flex-shrink: 0;
    padding-right: 24px;
    margin-right: 24px;
    border-right: 1px solid #e9ecef;
}

.product-center-dropdown .category-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.product-center-dropdown .category-item a {
    display: inline-block;
    padding: 8px 0;
    color: #374151;
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    position: relative;
    transition: color 0.2s ease, font-weight 0.2s ease;
    border-bottom: none;
}

.product-center-dropdown .category-item a::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 2px;
    background: #111827;
    transform: scaleX(0);
    transform-origin: left;
    transition: none;
}

.product-center-dropdown .category-item:hover a::after,
.product-center-dropdown .category-item.active a::after {
    transform: scaleX(1);
    transform-origin: left;
    transition: transform 250ms ease;
}

.product-center-dropdown .category-item:hover a,
.product-center-dropdown .category-item.active a {
    color: #111827;
    font-weight: 600;
}

.product-center-dropdown .product-details {
    flex: 1;
    position: relative;
    padding: 0 0 0 30px;
    min-width: 0;
}

.product-center-dropdown .detail-content {
    display: none;
}

.product-center-dropdown .detail-content.active {
    display: block;
}

.product-center-dropdown .detail-title {
    font-size: 16px;
    font-weight: 600;
    color: #111827;
    margin: 0 0 20px 0;
}

.product-center-dropdown .detail-title a {
    color: #111827;
    text-decoration: none;
    transition: color 0.2s;
}

.product-center-dropdown .detail-title a:hover {
    color: #0066cc;
}

.product-center-dropdown .detail-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.product-center-dropdown .detail-item {
    padding: 12px;
    border-radius: 6px;
    transition: background-color 0.2s;
}

.product-center-dropdown .detail-item:hover {
    background-color: #f9fafb;
}

.product-center-dropdown .detail-item a {
    text-decoration: none;
    color: inherit;
    display: block;
}

.product-center-dropdown .detail-item h5 {
    font-size: 14px;
    font-weight: 600;
    color: #374151;
    margin: 0 0 12px 0;
    transition: color 0.2s;
}

.product-center-dropdown .detail-item h5 a {
    color: #374151;
    text-decoration: none;
    transition: color 0.2s;
}

.product-center-dropdown .detail-item:hover h5 a {
    color: #0066cc;
}

.product-center-dropdown .detail-item p {
    font-size: 12px;
    color: #6b7280;
    margin: 0;
    line-height: 1.5;
}

.product-center-dropdown .third-level-products {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.product-center-dropdown .third-prod-link {
    display: block;
    font-size: 12px;
    color: #6b7280;
    text-decoration: none;
    padding: 6px 10px;
    background: #f9fafb;
    border-radius: 4px;
    transition: all 0.2s;
    border-left: 2px solid transparent;
}

.product-center-dropdown .third-prod-link:hover {
    color: #0066cc;
    background: #eff6ff;
    border-left-color: #0066cc;
    padding-left: 14px;
}

.product-center-dropdown .detail-intro {
    font-size: 14px;
    color: #6b7280;
    line-height: 1.6;
    margin: 0 0 15px 0;
}

.product-center-dropdown .view-more-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: #0066cc;
    text-decoration: none;
    font-weight: 500;
    transition: gap 0.2s;
}

.product-center-dropdown .view-more-link:hover {
    gap: 10px;
}

.product-center-dropdown .product-showcase {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #e5e7eb;
}

.product-center-dropdown .showcase-title {
    font-size: 14px;
    font-weight: 600;
    color: #111827;
    margin: 0 0 15px 0;
}

.product-center-dropdown .product-series-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.product-center-dropdown .product-series-card {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 16px;
    transition: all 0.2s;
}

.product-center-dropdown .product-series-card:hover {
    border-color: #0066cc;
    box-shadow: 0 2px 8px rgba(0,102,204,0.1);
}

.product-center-dropdown .series-header {
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid #f3f4f6;
}

.product-center-dropdown .series-header h4 {
    font-size: 14px;
    font-weight: 600;
    margin: 0 0 6px 0;
}

.product-center-dropdown .series-header h4 a {
    color: #111827;
    text-decoration: none;
    transition: color 0.2s;
}

.product-center-dropdown .series-header h4 a:hover {
    color: #0066cc;
}

.product-center-dropdown .series-name {
    font-size: 12px;
    color: #6b7280;
    margin: 0;
    font-weight: 500;
}

.product-center-dropdown .series-models {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.product-center-dropdown .model-link {
    display: inline-block;
    padding: 6px 12px;
    font-size: 12px;
    color: #374151;
    background: #f9fafb;
    border: 1px solid #e5e7eb;
    border-radius: 4px;
    text-decoration: none;
    transition: all 0.2s;
    white-space: nowrap;
}

.product-center-dropdown .model-link:hover {
    color: #0066cc;
    background: #eff6ff;
    border-color: #0066cc;
}

.product-center-dropdown .product-category-content {
    position: static;
    width: 100%;
    box-sizing: border-box;
    display: none;
}

.product-center-dropdown .product-category-content.active {
    display: block;
}

.product-center-dropdown .product-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    width: 100%;
    box-sizing: border-box;
}

.product-center-dropdown .product-card {
    padding: 0;
    background: transparent;
    box-shadow: none;
    text-align: left;
    align-items: flex-start;
    padding-left: 0 !important;
}

.product-center-dropdown .product-card:hover {
    box-shadow: none !important;
    transform: none !important;
}

.product-center-dropdown .product-header h4 {
    font-size: 14px;
    font-weight: 600;
    color: #374151;
    margin: 0 0 6px 0;
    text-align: left;
}

.product-center-dropdown .product-header h4 a {
    color: #374151;
    text-decoration: none;
}

.product-center-dropdown .product-series-name {
    display: block;
    margin: 0 0 12px 0;
    font-size: 12px;
    line-height: 1.4;
    color: #6b7280;
    font-weight: 400;
}

.product-center-dropdown .product-models {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin: 0 !important;
}

.product-center-dropdown .model-item {
    font-size: 14px;
    color: #4b5563;
    text-decoration: none;
    transition: color 0.2s ease;
    word-break: break-all;
}

.product-center-dropdown .model-item:hover {
    color: var(--brand-primary);
}

/* Header 右侧联系方式 CTA */
.contact-cta {
    margin-left: 20px;
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.contact-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 2px 6px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.96);
    color: #666;
    border: 1px solid rgba(0, 100, 167, 0.14);
    box-shadow: 0 8px 24px rgba(0, 100, 167, 0.08);
    text-decoration: none;
    font-weight: 700;
    font-size: 14px;
    transition: transform .15s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
}

.contact-btn:hover {
    transform: translateY(-1px);
    border-color: rgba(0, 100, 167, 0.26);
    box-shadow: 0 12px 30px rgba(0, 100, 167, 0.14);
}

.phone-icon {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(0, 100, 167, 0.12) 0%, rgba(74, 158, 255, 0.16) 100%);
    color: var(--brand-primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-style: normal;
    font-weight: 900;
    flex: 0 0 auto;
}

/* 顶部导航电话号码 */
.nav-phone {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #ffffff;
    text-decoration: none;
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 0.5px;
    white-space: nowrap;
    margin-right: 12px;
}

.nav-phone .phone-icon {
    width: 22px;
    height: 22px;
    background: transparent;
    color: #ffffff;
}

.nav-phone .phone-icon::before {
    content: "\260E";
    width: auto;
    height: auto;
    background: none;
    font-size: 18px;
    line-height: 1;
    color: #ffffff;
    transform: rotate(15deg);
}

.nav-phone:hover {
    color: #ffd54a;
}

.nav-phone:hover .phone-icon::before {
    color: #ffd54a;
}

.phone-icon::before {
    content: "";
    width: 14px;
    height: 14px;
    background-image: url(../../images/search.png);
    background-repeat: no-repeat;
    background-size: contain;
    background-position: center;
}

.header-search-form {
    display: flex;
    align-items: center;
    gap: 8px;
}

.header-search-form .s_t {
    width: 170px;
    border: none;
    outline: none;
    background: transparent;
    color: #333;
    font-size: 14px;
}

.header-search-form .s_t::placeholder {
    color: #9aa4b2;
}

.header-search-form .so {
    width: 32px;
    height: 32px;
    padding: 0;
    border: none;
    border-radius: 50%;
    background-color: transparent;
    background-image: url(../../images/search.png);
    background-repeat: no-repeat;
    background-position: center;
    background-size: 16px 16px;
    color: transparent;
    font-size: 0;
    text-indent: -9999px;
    cursor: pointer;
    transition: background-color .2s ease;
}

.header-search-form .so:hover {
    background-color: rgba(0, 100, 167, 0.08);
}

.contact-text {
    white-space: nowrap;
}

/* =============================================
   移动端导航菜单样式
   ============================================= */

/* 移动端菜单按钮 */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 6px;
    transition: background-color 0.2s;
    position: relative;
    z-index: 1001;
}

.mobile-menu-toggle:hover {
    background-color: rgba(24, 144, 255, 0.1);
}

.hamburger-line {
    width: 24px;
    height: 2px;
    background-color: #333;
    margin: 2px 0;
    transition: all 0.3s ease;
    border-radius: 1px;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* 移动端菜单覆盖层 - 高级模糊效果 */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.4) 0%, rgba(0, 0, 0, 0.6) 100%);
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(8px);
}

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

/* 移动端菜单 - 从顶部下拉，优雅简约设计 */
.mobile-menu {
    position: fixed;
    top: -100%;
    left: 0;
    width: 100%;
    background: linear-gradient(180deg, #ffffff 0%, #fafbfc 100%);
    z-index: 999;
    transition: all 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
    max-height: 100vh;
    overflow-y: auto;
}

.mobile-menu.active {
    top: 0;
}

/* 移动端菜单头部 - 极简设计 */
.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
}

.mobile-logo-img {
    height: 36px;
    width: auto;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.mobile-menu-close {
    width: 36px;
    height: 36px;
    background: rgba(71, 85, 105, 0.08);
    border: none;
    cursor: pointer;
    position: relative;
    padding: 0;
    border-radius: 10px;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
}

.mobile-menu-close:hover {
    background: rgba(71, 85, 105, 0.15);
    transform: scale(1.05);
}

.close-line {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 2px;
    background: linear-gradient(90deg, #666 0%, #888 100%);
    border-radius: 1px;
    transition: all 0.3s ease;
}

.close-line:nth-child(1) {
    transform: translate(-50%, -50%) rotate(45deg);
}

.close-line:nth-child(2) {
    transform: translate(-50%, -50%) rotate(-45deg);
}

/* 移动端导航网格布局 - 优雅设计 */
.mobile-nav-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    margin: 0;
    padding: 28px 22px;
    list-style: none;
    background: linear-gradient(135deg, #f8fafc 0%, #fff 100%)
}

.mobile-nav-item {
    background: rgba(255, 255, 255, 0.9);
    border-radius: 12px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    position: relative;
    backdrop-filter: blur(5px);
    box-shadow: 0 4px 16px rgb(182 182 182 / 15%);
}

.mobile-nav-item::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--brand-primary), var(--brand-lighter));
    transform: scaleX(0);
    transition: transform 0.3s ease;
    transform-origin: left;
}

.mobile-nav-item:hover::after {
    transform: scaleX(1);
}

.mobile-nav-item:hover {
    background: rgba(255, 255, 255, 0.95);
    border-color: rgba(24, 144, 255, 0.3);
    box-shadow: 0 4px 16px rgba(24, 144, 255, 0.15);
    transform: translateY(-1px);
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 22px 16px;
    color: #475569;
    text-decoration: none;
    font-size: 15px;
    font-weight: 600;
    transition: all 0.3s ease;
    text-align: center;
    min-height: 68px;
    letter-spacing: 0.3px;
}

.mobile-nav-link:hover {
    color: #333;
}

/* 移动端菜单底部 */
.mobile-menu-footer {
    padding: 24px 22px 28px;
    background: linear-gradient(135deg, #f8fafc 0%, #fff 100%);
}

.mobile-contact-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 16px 24px;
    background: var(--brand-gradient-135);
    color: #FFF;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 15px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 16px rgba(24, 144, 255, 0.25);
    position: relative;
    overflow: hidden;
}

.mobile-contact-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
    transition: left 0.5s ease;
}

.mobile-contact-btn:hover::before {
    left: 100%;
}

.mobile-contact-btn:hover {
    background: linear-gradient(135deg, #2B8BFF 0%, #5AAFFF 100%);
    box-shadow: 0 6px 20px rgba(0, 114, 206, 0.35);
    transform: translateY(-1px);
}

/* =============================================
   响应式显示控制
   ============================================= */

/* 1200px以下显示移动端菜单按钮，隐藏桌面端导航 */
@media (max-width: 1199px) {
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav {
        display: none;
    }
    
    .contact-cta {
        display: none;
    }
    .mobile-actions {
        display: none;
    }
}

/* 1200px以上隐藏移动端相关元素 */
@media (min-width: 1200px) {
    .mobile-menu-toggle,
    .mobile-menu,
    .mobile-menu-overlay {
        display: none !important;
    }

    .nav {
        margin-left: 0;
        width: 100%;
    }

    .nav-list {
        justify-content: center;
    }

    .nav-link {
        padding: 6px 10px;
        margin: 10px auto;
    }

    .dropdown-menu {
        top: 152px;
        width: 100%;
        margin: 0;
    }
}


.footer {
	background: #333333;
	height: 220px;
	overflow: hidden;
	padding-top: 30px;
}
.fnav dl {
	float: left;
	display: inline;
	margin-right: 80px;
}
.fnav dl dt {
	position: relative;
	line-height: 50px;
	font-size: 16px;
	margin-bottom: 10px;
}
.fnav dl dt a {
	color: #FFF;
}
.fnav dl dt:after {
	content: '';
	width: 20px;
	height: 2px;
	background: #666666;
	position: absolute;
	left: 0;
	bottom: 0;
}
.fnav dl dd {
	line-height: 25px;
	color: #999999;
}
.fnav dl dd a {
	color: #999999;
}
.footer .ewm {
	text-align: center;
	color: #FFF;
}
.footer .ewm h3 {
	padding-bottom: 5px;
}
.footer .ewm img {
	width: 150px;
	height: 150px;
}
.copyright {
	background: #333333;
	color: #999999;
	height: 50px;
	line-height: 30px;
	overflow: hidden;
	text-align: center;
}
.kefu {
	position: fixed;
	right: -170px;
	top: 50%;
	z-index: 900;
}
.kefu li a {
	text-decoration: none;
	color: #FFF;
}
.kefu li {
	margin-top: 1px;
	clear: both;
	height: 71px;
	position: relative;
}
.kefu li i {
	background: url(../images/fx.png) no-repeat;
	display: block;
	width: 30px;
	height: 27px;
	margin: 0 auto;
	text-align: center;
}
.kefu li p {
	height: 20px;
	font-size: 14px;
	line-height: 20px;
	overflow: hidden;
	text-align: center;
	color: #fff;
	margin: 0;
}
.kefu .kefu-qq i {
	background-position: 4px 5px;
}
.kefu .kefu-tel i {
	background-position: 0 -21px;
}
.kefu .kefu-liuyan i {
	background-position: 4px -53px;
}
.kefu .kefu-weixin i {
	background-position: -34px 4px;
}
.kefu .kefu-weibo i {
	background-position: -30px -22px;
}
.kefu .kefu-ftop {
	display: none;
}
.kefu .kefu-ftop i {
	width: 33px;
	height: 35px;
	background-position: -27px -51px;
}
.kefu .kefu-left {
	float: left;
	width: 77px;
	height: 47px;
	position: relative;
}
.kefu .kefu-tel-right {
	font-size: 16px;
	color: #fff;
	float: left;
	height: 24px;
	line-height: 22px;
	padding: 0 15px;
	border-left: 1px solid #fff;
	margin-top: 14px;
}
.kefu .kefu-right {
	width: 20px;
}
.kefu .kefu-tel-main {
	background: #0d77e5;
	color: #fff;
	width: 247px;
	padding: 9px 0 6px;
	float: left;
}
.kefu .kefu-main {
	background: #0d77e5;
	width: 97px;
	position: relative;
	padding: 12px 0 5px;
	float: left;
}
.kefu .kefu-weixin-pic {
	position: absolute;
	left: -130px;
	top: -24px;
	display: none;
	z-index: 333;
}
.kefu-weixin-pic img {
	width: 115px;
	height: 115px;
}