/* ========== 1. CSS 变量 & 全局重置 ========== */
:root {
    --primary-color: #f97316;
    --primary-dark: #ea580c;
    --secondary-color: #1a1a2e;
    --white: #ffffff;
    --black: #000000;
    --gray-light: #f5f5f5;
    --gray: #777777;
    --gray-dark: #333333;
    --border-color: #e5e5e5;
    --transition: all 0.3s ease;
    --shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
    --font-primary: 'Poppins', 'Segoe UI', sans-serif;
    --font-secondary: 'Roboto', 'Helvetica Neue', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-secondary);
    line-height: 1.6;
    color: var(--gray-dark);
    min-height: 200vh;
    background-color: #f9f9f9;
}

ul {
    list-style: none;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ========== 2. 容器宽度 1650px ========== */
.container {
    max-width: 1650px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ========== 3. 顶部信息栏 ========== */
.top-bar {
    background-color: var(--secondary-color);
    color: #cccccc;
    font-size: 13px;
    padding: 10px 0;
    font-family: var(--font-primary);
}

.top-bar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.top-bar .contact-info {
    display: flex;
    align-items: center;
    gap: 25px;
    flex-wrap: wrap;
}

.top-bar .contact-info li {
    display: flex;
    align-items: center;
    gap: 8px;
}

.top-bar .contact-info li i {
    color: var(--primary-color);
    font-size: 14px;
}

.top-bar .contact-info li a:hover {
    color: var(--primary-color);
}

.top-bar .social-links {
    display: flex;
    align-items: center;
    gap: 15px;
}

.top-bar .social-links a {
    color: #cccccc;
    font-size: 14px;
    transition: var(--transition);
}

.top-bar .social-links a:hover {
    color: var(--primary-color);
    transform: translateY(-2px);
}

/* ========== 4. 主导航栏 ========== */
.main-nav {
    background-color: var(--white);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.main-nav.scrolled {
    box-shadow: var(--shadow-lg);
}

.main-nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Logo 图片样式 */
.main-nav .logo {
    padding: 0px 0;
    flex-shrink: 0;
}

.main-nav .logo img {
    height: 70px;
    width: auto;
}

/* 导航菜单容器 */
.nav-menu-wrapper {
    display: flex;
    align-items: center;
    gap: 30px;
}

/* 主导航菜单 */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 5px;
}

.nav-menu > li {
    position: relative;
    padding: 30px 0;
}

.nav-menu > li > a {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 10px 16px;
    font-size: 15px;
    font-weight: 700;          /* 加粗字体 */
    font-family: var(--font-primary);
    color: var(--gray-dark);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-radius: 4px;
    transition: var(--transition);
    white-space: nowrap;
}

.nav-menu > li > a:hover,
.nav-menu > li.active > a {
    color: var(--primary-color);
}

.nav-menu > li > a .arrow {
    font-size: 10px;
    transition: transform 0.3s ease;
}

.nav-menu > li:hover > a .arrow {
    transform: rotate(180deg);
}

/* ========== 5. 下拉菜单 ========== */
.nav-menu .dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--white);
    min-width: 220px;
    border-radius: 6px;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(15px);
    transition: all 0.3s ease;
    z-index: 999;
    padding: 10px 0;
    border-top: 3px solid var(--primary-color);
}

.nav-menu > li:hover > .dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-menu .dropdown li a {
    display: block;
    padding: 10px 22px;
    font-size: 16px;
    font-weight: 700;
    color: var(--gray-dark);
    transition: var(--transition);
    font-family: var(--font-primary);
}

.nav-menu .dropdown li a:hover {
    color: var(--primary-color);
    background-color: #fff7ed;
    padding-left: 28px;
}

/* 二级子菜单 */
.nav-menu .dropdown .sub-dropdown {
    position: absolute;
    left: 100%;
    top: 0;
    background-color: var(--white);
    min-width: 200px;
    border-radius: 6px;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateX(15px);
    transition: all 0.3s ease;
    padding: 10px 0;
    border-top: 3px solid var(--primary-color);
}

.nav-menu .dropdown li.has-submenu {
    position: relative;
}

.nav-menu .dropdown li.has-submenu > a::after {
    content: '\f105';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    float: right;
    font-size: 12px;
}

.nav-menu .dropdown li.has-submenu:hover > .sub-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

/* ========== 6. 右侧操作区 ========== */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 15px;
    flex-shrink: 0;
}

.nav-actions .search-toggle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background-color: var(--gray-light);
    color: var(--gray-dark);
    cursor: pointer;
    font-size: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.nav-actions .search-toggle:hover {
    background-color: var(--primary-color);
    color: var(--white);
}

.nav-actions .btn-quote {
    display: inline-block;
    padding: 12px 28px;
    background-color: var(--primary-color);
    color: var(--white);
    font-weight: 600;
    font-family: var(--font-primary);
    font-size: 14px;
    border-radius: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: var(--transition);
    white-space: nowrap;
    border: 2px solid var(--primary-color);
}

.nav-actions .btn-quote:hover {
    background-color: transparent;
    color: var(--primary-color);
}

/* ========== 7. 搜索覆盖层 ========== */
.search-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s ease;
}

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

.search-overlay .search-close {
    position: absolute;
    top: 30px;
    right: 30px;
    font-size: 30px;
    color: var(--white);
    cursor: pointer;
    background: none;
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.search-overlay .search-close:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: rotate(90deg);
}

.search-overlay .search-form {
    width: 90%;
    max-width: 600px;
    display: flex;
    border-bottom: 2px solid rgba(255, 255, 255, 0.5);
    padding-bottom: 10px;
}

.search-overlay .search-form input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--white);
    font-size: 24px;
    padding: 10px 15px;
    font-family: var(--font-primary);
}

.search-overlay .search-form input::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

.search-overlay .search-form button {
    background: var(--primary-color);
    border: none;
    color: var(--white);
    padding: 10px 25px;
    font-size: 18px;
    cursor: pointer;
    border-radius: 4px;
    transition: var(--transition);
    font-family: var(--font-primary);
    font-weight: 600;
}

.search-overlay .search-form button:hover {
    background-color: var(--primary-dark);
}

/* ========== 8. 移动端切换按钮 ========== */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    z-index: 1001;
}

.mobile-menu-toggle span {
    display: block;
    width: 28px;
    height: 3px;
    background-color: var(--gray-dark);
    margin: 6px 0;
    transition: var(--transition);
    border-radius: 3px;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

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

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

/* 移动端遮罩 */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

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

/* ========== 9. 响应式设计 ========== */
@media (max-width: 991px) {
    .top-bar {
        display: none;
    }

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

    .nav-menu-wrapper {
        position: fixed;
        top: 0;
        right: -320px;
        width: 300px;
        height: 100vh;
        background-color: var(--white);
        flex-direction: column;
        align-items: flex-start;
        padding: 80px 25px 30px;
        gap: 20px;
        transition: right 0.4s ease;
        z-index: 999;
        overflow-y: auto;
        box-shadow: -5px 0 25px rgba(0, 0, 0, 0.15);
    }

    .nav-menu-wrapper.active {
        right: 0;
    }

    .nav-menu {
        flex-direction: column;
        align-items: flex-start;
        width: 100%;
        gap: 0;
    }

    .nav-menu > li {
        padding: 0;
        width: 100%;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-menu > li > a {
        padding: 14px 5px;
        font-size: 14px;
        justify-content: space-between;
    }

    .nav-menu .dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border-top: none;
        border-radius: 0;
        padding: 0;
        min-width: auto;
        display: none;
    }

    .nav-menu .dropdown.show {
        display: block;
    }

    .nav-menu .dropdown li a {
        padding: 10px 20px;
        font-size: 13px;
        background-color: #fafafa;
    }

    .nav-menu .dropdown .sub-dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border-top: none;
        border-radius: 0;
        padding: 0;
        min-width: auto;
        display: none;
        background-color: #f5f5f5;
    }

    .nav-menu .dropdown .sub-dropdown.show {
        display: block;
    }

    .nav-menu .dropdown li.has-submenu > a::after {
        content: '\f107';
    }

    .nav-actions {
        flex-direction: column;
        width: 100%;
        gap: 12px;
    }

    .nav-actions .btn-quote {
        text-align: center;
        width: 100%;
    }

    .nav-actions .search-toggle {
        display: none;
    }
}

@media (max-width: 576px) {
    .nav-menu-wrapper {
        width: 280px;
        right: -280px;
    }

    .main-nav .logo img {
        height: 38px;
    }

    .search-overlay .search-form {
        flex-direction: column;
        gap: 15px;
        border-bottom: none;
    }

    .search-overlay .search-form input {
        font-size: 18px;
        border-bottom: 2px solid rgba(255, 255, 255, 0.5);
        padding: 10px 5px;
    }

    .search-overlay .search-form button {
        width: 100%;
        text-align: center;
    }
}

/* ========== 10. 演示内容样式 ========== */
.demo-content {
    padding: 80px 20px;
    text-align: center;
}

.demo-content h1 {
    font-family: var(--font-primary);
    font-size: 36px;
    color: var(--secondary-color);
    margin-bottom: 15px;
}

.demo-content p {
    color: var(--gray);
    font-size: 16px;
    max-width: 600px;
    margin: 0 auto;
}
.digg4{ padding:10px; margin:10px; text-align:center; font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 16px; }
.digg4 a,.digg4 span.miy{ margin:2px; text-decoration:none;}
.digg4 .disabledfy{ font-family: Tahoma, Verdana;}

.metpager_9 a,.metpager_9 span.miy{ border:1px solid #eae0d9; padding:10px 15px 10px 15px; color:#a1a0a0;  border-radius: 5px; } 
.metpager_9 a.page-num-current{background-color: #4e83f4;  color: #fff; }
.metpager_9 a:hover { border:1px solid #eae0d9; color:#fff; background-color:#4e83f4; } 
.metpager_9 a:hover { border:1px solid #eae0d9; color:#fff; background-color:#4e83f4; } 
.metpager_9 span.current {border:1px solid #b2e05d; padding:2px 5px 2px 5px; margin:2px; color:#fff; background-color:#b2e05d; text-decoration:none;} 
.metpager_9 span.disabled { border:1px solid #f3f3f3; padding:2px 5px 2px 5px; margin:2px; color:#ccc;}