/* 全局重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563EB;
    --secondary-color: #1D4ED8;
    --text-color: #FFFFFF;
    --dark-bg: #0F172A;
    --light-text: #94A3B8;
    --header-height: 80px;
    --border-color: rgba(37, 99, 235, 0.2);
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --gradient-bg: linear-gradient(135deg, #2563EB 0%, #1E40AF 100%);
    --card-bg: rgba(30, 41, 59, 0.5);
    --hover-bg: rgba(37, 99, 235, 0.1);
}

/* 基础样式 */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background: var(--dark-bg);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* 顶部导航栏样式 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background: rgba(26, 32, 44, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: all 0.3s ease;
    box-shadow: var(--box-shadow);
}

.header-container {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    height: 100%;
    gap: clamp(20px, 4vw, 60px); /* 减小最小间距和默认间距 */
    padding: 0 15px;
    max-width: 1200px;
    margin: 0 auto;
}

/* Logo和公司名称样式 */
.logo {
    height: 50px;
    flex-shrink: 0;
    max-width: 50%; /* 减小logo区域最大宽度 */
}

.logo a {
    display: flex;
    align-items: center;
    gap: 15px;
    text-decoration: none;
    max-width: 100%;
}

.logo img {
    height: 46px;
    width: auto;
    flex-shrink: 0;
}

.company-name {
    color: var(--text-color);
    overflow: hidden;
}

.company-name h1 {
    font-size: 18px;
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.company-name p {
    font-size: 12px;
    color: var(--light-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 导航菜单样式 */
.nav-menu {
    position: relative;
}

.nav-menu > ul {
    display: flex;
    list-style: none;
    gap: clamp(15px, 2vw, 30px); /* 减小导航项之间的间距 */
    justify-content: flex-end;
    margin-left: auto;
}

.nav-menu a {
    text-decoration: none;
    color: var(--light-text);
    font-size: clamp(14px, 0.9vw, 16px); /* 稍微调小字体 */
    font-weight: 500;
    padding: 10px 10px; /* 减小水平内边距 */
    position: relative;
    transition: all 0.3s ease;
    white-space: nowrap; /* 防止文字换行 */
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 5px; /* 调整位置，使其更靠近文字 */
    left: 15px; /* 与padding-left对应 */
    right: 15px; /* 与padding-right对应 */
    height: 2px;
    background: var(--primary-color);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s ease;
}

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

.nav-menu a:hover::after,
.nav-menu a.active::after {
    transform: scaleX(1);
    transform-origin: left;
}

/* 下拉菜单样式 */
.has-submenu {
    position: relative;
    padding: 0 5px;
}

.has-submenu > a::before {  /* 改用::before，避免与下划线冲突 */
    content: '▾';
    display: inline-block;
    margin-left: 4px;
    font-size: 12px;
    transition: transform 0.2s ease;
    position: relative;
    top: -1px;
}

.has-submenu:hover > a::before {  /* 配合上面的更改 */
    transform: rotate(180deg);
}

.submenu {
    position: absolute;
    top: 100%;
    left: -8px;
    min-width: 180px;
    background: rgba(26, 32, 44, 0.98);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(49, 130, 206, 0.15);
    border-radius: 4px;
    margin-top: 20px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all 0.15s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    overflow: hidden;
    z-index: 1100;
    display: flex;
    flex-direction: column;
}

.submenu::before {
    content: '';
    position: absolute;
    top: -4px;
    left: 20px;
    width: 8px;
    height: 8px;
    background: inherit;
    border-left: 1px solid rgba(49, 130, 206, 0.15);
    border-top: 1px solid rgba(49, 130, 206, 0.15);
    transform: rotate(45deg);
}

.has-submenu:hover .submenu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.submenu ul {
    list-style: none;
    margin: 0;
    padding: 4px 0;
    width: 100%;
    display: block;
    gap: 0; /* 移除间距 */
}

.submenu li {
    display: block;
    width: 100%;
    margin: 0;
    padding: 0;
    height: 40px; /* 固定高度 */
}

.submenu li + li {
    border-top: 1px solid rgba(49, 130, 206, 0.08);
}

.submenu a {
    display: flex;
    align-items: center;
    width: 100%;
    height: 100%;
    padding: 0 16px;
    color: var(--light-text);
    font-size: 14px;
    text-decoration: none;
    transition: all 0.15s ease;
    position: relative;
}

.submenu a:hover {
    color: var(--text-color);
    background: rgba(49, 130, 206, 0.1);
}

.submenu a::after {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--primary-color);
    transform: scaleY(0);
    transition: transform 0.2s ease;
}

.submenu a:hover::after {
    transform: scaleY(1);
}

/* 移动端样式调整 */
@media (max-width: 900px) { /* 提高断点，让移动端菜单更早触发 */
    /* 导航和Logo样式 */
    .header-container {
        padding: 0 15px;
    }
    
    .logo {
        max-width: 75%;
    }
    
    .logo a {
        gap: 8px;
    }
    
    .logo img {
        height: 35px;
    }
    
    .company-name h1 {
        font-size: 14px;
    }
    
    .company-name p {
        font-size: 10px;
    }

    /* 移动端导航菜单 */
    .nav-mobile-btn {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: 0;
        width: 100%;
        background: rgba(26, 32, 44, 0.98);
        padding: 20px;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        backdrop-filter: blur(10px);
        border-bottom: 1px solid var(--border-color);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-menu ul {
        flex-direction: column;
        gap: 15px;
    }

    .nav-menu > ul > li {
        width: 100%;
    }

    .nav-menu a {
        display: block;
        padding: 10px 0;
    }

    /* 移动端下拉菜单 */
    .submenu {
        position: static;
        width: 100%;
        background: none;
        border: none;
        box-shadow: none;
        opacity: 1;
        visibility: visible;
        transform: none;
        padding: 0 0 0 20px;
        display: none;
    }

    .has-submenu.active .submenu {
        display: block;
    }

    .submenu a {
        padding: 8px 0;
        border-bottom: 1px solid var(--border-color);
    }

    /* 页脚响应式 */
    .footer-content {
        gap: 30px;
        padding: 0 15px;
    }

    .footer-info {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .footer-section {
        padding: 20px;
    }

    .qrcode img {
        width: 100px;
        height: 100px;
    }
}

/* 小屏幕设备优化 */
@media (max-width: 480px) {
    .logo {
        max-width: 50px;
    }

    .company-name {
        display: none;
    }

    .header {
        height: 60px;
        --header-height: 60px;
    }
    
    .logo img {
        height: 30px;
    }

    .main-content {
        margin-top: var(--header-height);
        padding: 20px 0;
    }

    .footer {
        padding: 40px 0 20px;
    }
}

/* 简单背景效果 */
body {
    background: var(--dark-bg);
}

/* 添加滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--dark-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

/* 页脚样式 */
.footer {
    background: var(--dark-bg);
    color: var(--text-color);
    padding: 25px 0 15px; /* 减小上下间距 */
    border-top: 1px solid var(--border-color);
}

.footer-content {
    max-width: 1200px; /* 与其他区域保持一致 */
    margin: 0 auto;
    padding: 0 20px;
}

.footer-info {
    display: flex;
    justify-content: space-between;
    align-items: stretch;
    margin-bottom: 15px;
    background: var(--card-bg);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    padding: 20px; /* 进一步减小整体内边距 */
    backdrop-filter: blur(10px);
}

.footer-section {
    flex: 1;
    padding: 15px; /* 进一步减小内边距 */
    border-radius: 8px;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--border-color);
    margin: 0 12px; /* 减小外边距 */
}

.footer-section:first-child {
    margin-left: 0;
}

.footer-section:last-child {
    margin-right: 0;
    padding: 12px; /* 二维码部分padding更小 */
}

.company-info {
    flex: 3;
}

.qrcode {
    flex: 1;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-width: 160px; /* 设置最小宽度 */
}

.footer-section h3 {
    font-size: 14px;
    margin-bottom: 8px;
    color: var(--text-color);
    background: var(--gradient-bg);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.company-info h3 {
    text-align: left;
}

.qrcode h3 {
    text-align: center;
    margin-bottom: 4px; /* 减小二维码标题下方间距 */
}

.company-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.company-info p {
    margin: 4px 0;
    font-size: 13px;
    line-height: 1.4;
    color: var(--light-text);
    position: relative;
    padding-left: 20px; /* 为图标留出空间 */
}

.company-info p::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 4px;
    background: var(--primary-color);
    border-radius: 50%;
}

.company-info p:first-of-type {
    font-weight: 500;
    color: var(--text-color);
    margin-bottom: 8px;
    padding-left: 0;
}

.company-info p:first-of-type::before {
    display: none;
}

.qrcode img {
    width: 100px; /* 减小二维码尺寸 */
    height: 100px;
    margin: 5px auto;
    display: block;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 3px;
    background: rgba(255, 255, 255, 0.05);
    transition: transform 0.3s ease;
}

.qrcode img:hover {
    transform: scale(1.05);
}

.qrcode p {
    font-size: 12px;
    margin-top: 5px;
    color: var(--light-text);
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 15px; /* 减小顶部间距 */
    text-align: center;
}

.footer-bottom p {
    font-size: 12px;
    color: var(--light-text);
    line-height: 1.4; /* 减小行高 */
}

.footer-bottom a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-bottom a:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}

/* 响应式布局 */
@media screen and (max-width: 768px) {
    .footer-info {
        flex-direction: column;
        gap: 20px;
        margin: 0 15px 20px;
        padding: 15px;
    }

    .footer-section {
        padding: 15px;
    }

    .company-info,
    .qrcode {
        max-width: 100%;
    }

    .qrcode img {
        margin: 10px auto;
    }

    .footer-section h3,
    .company-info p {
        text-align: center;
    }
}