/*
Theme Name: gzzxsc - GEO AI Optimized Theme
Theme URI: https://www.gzzxsc.cn
Author: AI优化主题开发团队
Author URI: https://www.gzzxsc.cn
Description: 专为AI平台收录优化的GEO主题，完美适配DeepSeek、豆包、百度AI等平台，支持复杂结构化数据，响应式设计，SEO友好。
Version: 2.0.0
License: GPL v2 or later
Text Domain: gzzxsc
Domain Path: /languages
Tags: ge优化, ai收录, 响应式, 多语言, 结构化数据, 短视频支持
*/

/* ========== CSS变量定义 ========== */
:root {
    /* 主色调 - AI科技红 */
    --gzzxsc-primary: #C62828;
    --gzzxsc-primary-dark: #B71C1C;
    --gzzxsc-primary-light: #EF5350;
    
    /* AI辅助色 */
    --gzzxsc-secondary: #2C3E50;
    --gzzxsc-accent: #1976D2;
    --gzzxsc-success: #4CAF50;
    --gzzxsc-warning: #FF9800;
    --gzzxsc-error: #F44336;
    
    /* 背景色 */
    --gzzxsc-bg-white: #FFFFFF;
    --gzzxsc-bg-light: #F8F9FA;
    --gzzxsc-bg-dark: #263238;
    
    /* 文字色 */
    --gzzxsc-text-dark: #333333;
    --gzzxsc-text-medium: #666666;
    --gzzxsc-text-light: #999999;
    
    /* 边框 */
    --gzzxsc-border-light: #EEEEEE;
    --gzzxsc-border-medium: #E0E0E0;
    
    /* 字体 */
    --gzzxsc-font-main: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --gzzxsc-font-heading: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    
    /* 圆角 */
    --gzzxsc-radius-sm: 4px;
    --gzzxsc-radius-md: 8px;
    --gzzxsc-radius-lg: 16px;
    --gzzxsc-radius-xl: 24px;
    
    /* 阴影 */
    --gzzxsc-shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --gzzxsc-shadow-md: 0 4px 8px rgba(0,0,0,0.12);
    --gzzxsc-shadow-lg: 0 8px 16px rgba(0,0,0,0.15);
    --gzzxsc-shadow-xl: 0 12px 24px rgba(0,0,0,0.2);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--gzzxsc-font-main);
    color: var(--gzzxsc-text-dark);
    line-height: 1.6;
    background: var(--gzzxsc-bg-white);
    overflow-x: hidden;
}

/* ========== 语义化标签样式 ========== */
article, section, aside, nav, header, footer, main {
    display: block;
}

main {
    min-height: 60vh;
}

/* ========== 容器 ========== */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ========== 排版 ========== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--gzzxsc-font-heading);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 1rem;
    color: var(--gzzxsc-text-dark);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1.5rem;
    color: var(--gzzxsc-text-medium);
}

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

a:hover {
    color: var(--gzzxsc-primary-dark);
}

/* ========== 按钮 ========== */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: var(--gzzxsc-radius-md);
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gzzxsc-primary);
    color: white;
}

.btn-primary:hover {
    background: var(--gzzxsc-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--gzzxsc-shadow-md);
}

.btn-outline {
    background: transparent;
    color: var(--gzzxsc-primary);
    border: 2px solid var(--gzzxsc-primary);
}

.btn-outline:hover {
    background: var(--gzzxsc-primary);
    color: white;
}

.btn-small {
    padding: 8px 20px;
    font-size: 14px;
}

.btn-large {
    padding: 15px 40px;
    font-size: 18px;
}

/* ========== 区块标题 ========== */
.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    position: relative;
    display: inline-block;
    padding-bottom: 1rem;
    margin-bottom: 1rem;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: var(--gzzxsc-primary);
}

.section-header p {
    font-size: 1.125rem;
    max-width: 800px;
    margin: 0 auto;
}

/* ========== 网格布局 ========== */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; }

/* ========== 卡片样式 ========== */
.card {
    background: var(--gzzxsc-bg-white);
    border-radius: var(--gzzxsc-radius-lg);
    padding: 2rem;
    box-shadow: var(--gzzxsc-shadow-sm);
    transition: all 0.3s ease;
    border: 1px solid var(--gzzxsc-border-light);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--gzzxsc-shadow-lg);
    border-color: var(--gzzxsc-primary-light);
}

/* ========== 图标框 ========== */
.icon-box {
    text-align: center;
    padding: 1.5rem;
}

.icon-box .icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: var(--gzzxsc-bg-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gzzxsc-primary);
    font-size: 2rem;
    transition: all 0.3s ease;
}

.icon-box:hover .icon {
    background: var(--gzzxsc-primary);
    color: white;
}

/* ========== 进度条 ========== */
.progress-item {
    margin-bottom: 1.5rem;
}

.progress-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.progress-bar {
    width: 100%;
    height: 10px;
    background: var(--gzzxsc-bg-light);
    border-radius: var(--gzzxsc-radius-sm);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--gzzxsc-primary);
    border-radius: var(--gzzxsc-radius-sm);
    transition: width 1s ease;
}

/* ========== 列表样式 ========== */
.list-check {
    list-style: none;
    padding: 0;
}

.list-check li {
    padding: 0.5rem 0 0.5rem 2rem;
    position: relative;
}

.list-check li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--gzzxsc-primary);
    font-weight: bold;
}

/* ========== 合作品牌 ========== */
.brands-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    padding: 2rem 0;
}

.brand-item {
    width: 120px;
    height: 60px;
    background: var(--gzzxsc-bg-light);
    border-radius: var(--gzzxsc-radius-md);
    transition: all 0.3s ease;
    filter: grayscale(100%);
    opacity: 0.7;
}

.brand-item:hover {
    filter: grayscale(0);
    opacity: 1;
    transform: scale(1.05);
}

/* ========== 突出显示文本 ========== */
.highlight {
    background: linear-gradient(120deg, rgba(198,40,40,0.1) 0%, rgba(198,40,40,0.1) 100%);
    padding: 2rem;
    border-radius: var(--gzzxsc-radius-lg);
    border-left: 4px solid var(--gzzxsc-primary);
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--gzzxsc-text-dark);
    margin: 2rem 0;
}

.highlight strong {
    color: var(--gzzxsc-primary);
    font-size: 1.25rem;
}

/* ========== 引用图标 ========== */
blockquote {
    position: relative;
    padding: 2rem 2rem 2rem 4rem;
    background: var(--gzzxsc-bg-light);
    border-radius: var(--gzzxsc-radius-lg);
    margin: 2rem 0;
}

blockquote::before {
    content: '"';
    position: absolute;
    left: 1.5rem;
    top: 1rem;
    font-size: 4rem;
    color: var(--gzzxsc-primary);
    opacity: 0.3;
    font-family: serif;
}

/* ========== 工具类 ========== */
.text-center { text-align: center; }
.text-primary { color: var(--gzzxsc-primary); }
.bg-light { background: var(--gzzxsc-bg-light); }
.bg-dark { background: var(--gzzxsc-bg-dark); color: white; }
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }
.py-1 { padding: 1rem 0; }
.py-2 { padding: 2rem 0; }
.py-3 { padding: 3rem 0; }

/* ========== 动画 ========== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.6s ease forwards;
}

/* ========== 幻灯片区域 ========== */
.slider-section {
    margin-bottom: 40px;
}

.swiper-container {
    width: 100%;
    height: 500px;
    overflow: hidden;
}

.swiper-slide {
    position: relative;
    background-size: cover;
    background-position: center;
}

.slide-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: #fff;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.5);
    width: 80%;
    max-width: 800px;
}

.slide-content h2 {
    font-size: 48px;
    margin-bottom: 20px;
}

.slide-content p {
    font-size: 20px;
    margin-bottom: 30px;
}

.slide-content .btn {
    display: inline-block;
    background: var(--gzzxsc-primary);
    color: #fff;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: background 0.3s;
}

.slide-content .btn:hover {
    background: var(--gzzxsc-primary-dark);
}

/* ========== 首页内容区 ========== */
.home-intro {
    text-align: center;
    padding: 60px 0;
}

.home-intro h1 {
    font-size: 36px;
    margin-bottom: 20px;
    color: var(--gzzxsc-primary);
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin: 50px 0;
}

.feature-item {
    padding: 30px 20px;
    border: 1px solid #eee;
    border-radius: 8px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.feature-item h3 {
    color: var(--gzzxsc-primary);
    margin-bottom: 15px;
}

/* ========== 产品卡片 ========== */
.product-card {
    background: #fff;
    border-radius: var(--gzzxsc-radius-lg);
    overflow: hidden;
    box-shadow: var(--gzzxsc-shadow-sm);
    transition: all 0.3s;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--gzzxsc-shadow-lg);
}

.product-image {
    height: 200px;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

.product-card:hover .product-image img {
    transform: scale(1.1);
}

.product-content {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.product-title {
    font-size: 18px;
    margin-bottom: 10px;
}

.product-title a {
    color: var(--gzzxsc-text-dark);
    text-decoration: none;
}

.product-title a:hover {
    color: var(--gzzxsc-primary);
}

.product-excerpt {
    color: var(--gzzxsc-text-medium);
    margin-bottom: 15px;
    line-height: 1.6;
    flex: 1;
}

.product-button {
    margin-top: auto;
}

/* ========== 页脚 ========== */
.site-footer {
    background: var(--gzzxsc-bg-dark);
    color: #ccc;
    padding: 40px 0 20px;
    margin-top: 60px;
}

.footer-widgets {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.footer-bottom {
    text-align: center;
    border-top: 1px solid #444;
    padding-top: 20px;
    font-size: 14px;
}

/* ========== 内容区间距 ========== */
.site-content {
    padding-top: 30px;
    padding-bottom: 40px;
    min-height: 400px;
}

.home .site-content {
    padding-top: 0;
}

/* ========== 头部导航栏样式（核心修复部分）========== */

/* 头部容器 */
.site-header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 15px 0;
}

.header-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
}

/* Logo区域 */
.site-branding {
    flex: 0 0 auto;
}

.site-logo img {
    max-height: 50px;
    width: auto;
}

.site-title {
    font-size: 24px;
    font-weight: 700;
    margin: 0;
    line-height: 1.2;
}

.site-title a {
    color: var(--gzzxsc-primary);
    text-decoration: none;
}

.site-description {
    margin: 5px 0 0;
    font-size: 14px;
    color: var(--gzzxsc-text-light);
}

/* ===== 主导航 - 横排布局（重点） ===== */
.main-navigation {
    flex: 1;
    display: flex;
    justify-content: flex-end;
}

.main-navigation ul {
    display: flex !important;
    flex-direction: row !important;
    flex-wrap: wrap !important;
    list-style: none !important;
    margin: 0 !important;
    padding: 0 !important;
    gap: 25px !important;
}

.main-navigation li {
    position: relative !important;
    margin: 0 !important;
    padding: 0 !important;
    width: auto !important;
}

.main-navigation a {
    display: block !important;
    padding: 10px 0 !important;
    color: #333 !important;
    font-weight: 500 !important;
    text-decoration: none !important;
    font-size: 15px !important;
    white-space: nowrap !important;
    transition: color 0.3s !important;
}

.main-navigation a:hover {
    color: var(--gzzxsc-primary) !important;
}

/* 当前菜单项高亮 */
.main-navigation .current-menu-item > a,
.main-navigation .current_page_item > a {
    color: var(--gzzxsc-primary) !important;
    position: relative !important;
}

.main-navigation .current-menu-item > a:after,
.main-navigation .current_page_item > a:after {
    content: '' !important;
    position: absolute !important;
    bottom: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 2px !important;
    background: var(--gzzxsc-primary) !important;
}

/* 有子菜单的菜单项 */
.main-navigation li.menu-item-has-children {
    position: relative !important;
}

.main-navigation li.menu-item-has-children > a {
    padding-right: 20px !important;
    position: relative !important;
}

.main-navigation li.menu-item-has-children > a:after {
    content: '▼' !important;
    font-size: 10px !important;
    position: absolute !important;
    right: 0 !important;
    top: 50% !important;
    transform: translateY(-50%) !important;
    color: #999 !important;
}

/* 子菜单 - 默认隐藏 */
.main-navigation .sub-menu {
    display: none !important;
    position: absolute !important;
    top: 100% !important;
    left: 0 !important;
    z-index: 99999 !important;
    background: #fff !important;
    border: 1px solid #eee !important;
    border-radius: 4px !important;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1) !important;
    min-width: 200px !important;
    padding: 10px 0 !important;
    margin-top: 5px !important;
}

/* 悬停时显示子菜单 */
.main-navigation li:hover > .sub-menu {
    display: block !important;
}

/* 子菜单项样式 */
.main-navigation .sub-menu li {
    display: block !important;
    width: 100% !important;
}

.main-navigation .sub-menu a {
    padding: 8px 20px !important;
    white-space: nowrap !important;
    color: #555 !important;
    font-size: 14px !important;
}

.main-navigation .sub-menu a:hover {
    background: #f5f5f5 !important;
    color: var(--gzzxsc-primary) !important;
}

/* 二级子菜单的位置 */
.main-navigation .sub-menu .sub-menu {
    top: 0 !important;
    left: 100% !important;
    margin-top: -10px !important;
}

.main-navigation .sub-menu li.menu-item-has-children > a:after {
    content: '▶' !important;
    right: 15px !important;
    font-size: 10px !important;
}

/* 右侧工具栏 */
.header-tools {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-left: 20px;
}

.header-search-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    color: #333;
    transition: color 0.3s;
}

.header-search-toggle:hover {
    color: var(--gzzxsc-primary);
}

/* 搜索弹窗 */
.header-search-popup {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: #fff;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    padding: 20px 0;
    z-index: 1000;
}

.header-search-popup.active {
    display: block;
}

.search-popup-inner {
    position: relative;
}

.search-popup-close {
    position: absolute;
    top: 50%;
    right: 20px;
    transform: translateY(-50%);
    background: none;
    border: none;
    font-size: 30px;
    cursor: pointer;
    color: #999;
    transition: color 0.3s;
}

.search-popup-close:hover {
    color: var(--gzzxsc-primary);
}

.search-popup-inner .search-form {
    display: flex;
    gap: 10px;
    max-width: 600px;
    margin: 0 auto;
}

.search-popup-inner .search-field {
    flex: 1;
    padding: 12px 20px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
}

.search-popup-inner .search-field:focus {
    outline: none;
    border-color: var(--gzzxsc-primary);
}

.search-popup-inner .search-submit {
    padding: 0 30px;
    background: var(--gzzxsc-primary);
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    transition: background 0.3s;
}

.search-popup-inner .search-submit:hover {
    background: var(--gzzxsc-primary-dark);
}

/* 移动端菜单按钮 */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    flex-direction: column;
    gap: 5px;
}

.menu-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background: #333;
    transition: all 0.3s;
}

/* 移动端适配 */
@media (max-width: 992px) {
    .main-navigation ul {
        gap: 20px !important;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: flex !important;
    }
    
    .header-wrapper {
        position: relative;
    }
    
    .main-navigation {
        display: none !important;
        position: absolute !important;
        top: 100% !important;
        left: 0 !important;
        width: 100% !important;
        background: #fff !important;
        padding: 20px !important;
        box-shadow: 0 5px 15px rgba(0,0,0,0.1) !important;
        z-index: 99 !important;
    }
    
    .main-navigation.active {
        display: block !important;
    }
    
    .main-navigation ul {
        flex-direction: column !important;
        gap: 15px !important;
        width: 100% !important;
    }
    
    .main-navigation li {
        width: 100% !important;
    }
    
    .main-navigation a {
        width: 100% !important;
        padding: 10px 0 !important;
    }
    
    .main-navigation .sub-menu {
        position: static !important;
        display: none !important;
        box-shadow: none !important;
        border: none !important;
        background: #f9f9f9 !important;
        padding: 10px 0 10px 20px !important;
        margin-top: 5px !important;
    }
    
    .main-navigation li.menu-item-has-children > a:after {
        content: '▼' !important;
    }
    
    .main-navigation li.menu-item-has-children.active > .sub-menu {
        display: block !important;
    }
    
    .main-navigation li.menu-item-has-children.active > a:after {
        content: '▲' !important;
    }
    
    .header-tools {
        margin-left: auto;
    }
}