/*
Theme Name: iHeir Enterprise
Theme URI: https://www.gzzxsc.cn/
Author: iHeir 艾浩尔
Author URI: https://www.gzzxsc.cn/
Description: 企业级 WordPress 主题：响应式布局、SEO/GEO/AEO 全优化、安全加固、高性能。参照 The7 布局设计，全新编写，无第三方依赖。
Version: 1.0.0
Requires at least: 5.8
Tested up to: 6.7
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: iheir-enterprise
Tags: business, corporate, responsive, seo, e-commerce
*/

/* ============================================================
   1. CSS 变量（设计令牌）
   ============================================================ */
:root {
    --color-primary: #1a5fb4;
    --color-primary-dark: #14498d;
    --color-accent: #e8a020;
    --color-text: #333333;
    --color-text-light: #666666;
    --color-bg: #ffffff;
    --color-bg-light: #f5f7fa;
    --color-border: #e5e8ec;
    --color-footer-bg: #1c2430;
    --color-footer-text: #aeb6c2;
    --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
                 "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    --container-width: 1200px;
    --space-1: 0.5rem;
    --space-2: 1rem;
    --space-3: 1.5rem;
    --space-4: 2.5rem;
    --space-5: 4rem;
    --radius: 4px;
    --shadow: 0 2px 8px rgba(0,0,0,0.08);
    --transition: 0.2s ease;
}

/* ============================================================
   2. 基础重置（Reset）
   ============================================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text);
    background: var(--color-bg);
    word-break: break-word;
}

img {
    max-width: 100%;
    height: auto;
    vertical-align: middle;
}

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

a:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

h1, h2, h3, h4, h5, h6 {
    line-height: 1.35;
    margin: 0 0 var(--space-2);
    font-weight: 600;
    color: #222;
}

h1 { font-size: 2rem; }
h2 { font-size: 1.6rem; }
h3 { font-size: 1.3rem; }
h4 { font-size: 1.1rem; }

p { margin-bottom: var(--space-2); }

ul, ol {
    padding-left: 1.5em;
    margin-bottom: var(--space-2);
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: var(--space-2);
}

table th, table td {
    border: 1px solid var(--color-border);
    padding: 0.6em 0.8em;
    text-align: left;
}

table th { background: var(--color-bg-light); }

/* ============================================================
   3. 布局容器（响应式）
   ============================================================ */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding-left: var(--space-2);
    padding-right: var(--space-2);
}

.site-header {
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    position: relative;
    z-index: 100;
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 68px;
}

.site-branding {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-shrink: 0;
}

.site-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin: 0;
    color: var(--color-primary);
}

.site-description {
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin: 0;
}

/* ---------- 导航（移动端汉堡菜单） ---------- */
.main-navigation {
    display: flex;
    align-items: center;
}

.main-navigation ul {
    list-style: none;
    display: flex;
    gap: 1.2rem;
    margin: 0;
    padding: 0;
}

.main-navigation a {
    display: block;
    padding: 0.5em 0;
    color: var(--color-text);
    font-weight: 500;
}

.main-navigation a:hover,
.main-navigation .current-menu-item > a {
    color: var(--color-primary);
}

.nav-toggle {
    display: none;
    background: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 0.4em 0.8em;
    font-size: 1.1rem;
    cursor: pointer;
    line-height: 1;
}

/* ---------- 主内容区 ---------- */
.site-content {
    padding: var(--space-4) 0;
    min-height: 60vh;
}

.content-area {
    float: none;
    width: 100%;
}

.sidebar-area {
    width: 100%;
}

/* 侧边栏布局：桌面端右侧栏 */
@media (min-width: 992px) {
    .layout-with-sidebar .content-area {
        float: left;
        width: 68%;
        padding-right: var(--space-4);
    }
    .layout-with-sidebar .sidebar-area {
        float: right;
        width: 32%;
    }
}

/* ---------- 页脚 ---------- */
.site-footer {
    background: var(--color-footer-bg);
    color: var(--color-footer-text);
    padding: var(--space-5) 0 0;
    font-size: 0.9rem;
}

.site-footer a {
    color: #cdd4de;
}

.site-footer a:hover {
    color: #ffffff;
}

.footer-widgets {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-4);
    margin-bottom: var(--space-4);
}

.footer-widgets h3,
.footer-widgets .widget-title {
    color: #ffffff;
    font-size: 1rem;
    margin-bottom: var(--space-2);
}

.site-info {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: var(--space-2) 0;
    text-align: center;
    font-size: 0.8rem;
}

/* ============================================================
   4. 通用组件
   ============================================================ */
/* 面包屑 */
.breadcrumbs {
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-bottom: var(--space-3);
    padding-bottom: var(--space-1);
    border-bottom: 1px solid var(--color-border);
}

.breadcrumbs a { color: var(--color-text-light); }
.breadcrumbs a:hover { color: var(--color-primary); }
.breadcrumbs .separator { margin: 0 0.4em; color: #b0b6c0; }

/* 文章卡片 */
.post-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--space-3);
    margin-bottom: var(--space-3);
    box-shadow: var(--shadow);
    transition: box-shadow var(--transition);
}

.post-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.12); }

.post-card .entry-title {
    font-size: 1.25rem;
    margin-bottom: var(--space-1);
}

.post-card .entry-meta {
    font-size: 0.8rem;
    color: var(--color-text-light);
    margin-bottom: var(--space-2);
}

.post-card .entry-thumbnail {
    margin-bottom: var(--space-2);
    overflow: hidden;
    border-radius: var(--radius);
}

.post-card .entry-thumbnail img {
    width: 100%;
    display: block;
    transition: transform 0.3s ease;
}

.post-card:hover .entry-thumbnail img { transform: scale(1.02); }

/* 按钮 */
.btn {
    display: inline-block;
    background: var(--color-primary);
    color: #fff !important;
    padding: 0.6em 1.4em;
    border-radius: var(--radius);
    font-weight: 500;
    text-decoration: none;
    transition: background var(--transition);
}

.btn:hover { background: var(--color-primary-dark); }

/* 分页 */
.pagination {
    margin: var(--space-4) 0;
    text-align: center;
}

.pagination .page-numbers {
    display: inline-block;
    padding: 0.4em 0.9em;
    margin: 0 0.2em;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    color: var(--color-text);
}

.pagination .page-numbers.current {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

/* 搜索框 */
.search-form {
    display: flex;
    gap: 0.5rem;
}

.search-form input[type="search"] {
    flex: 1;
    padding: 0.6em 0.9em;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 0.95rem;
}

.search-form button {
    background: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: var(--radius);
    padding: 0 1.2em;
    cursor: pointer;
}

/* 侧边栏部件 */
.sidebar-widget {
    margin-bottom: var(--space-3);
}

.sidebar-widget .widget-title {
    font-size: 1.05rem;
    padding-bottom: 0.5em;
    border-bottom: 2px solid var(--color-primary);
    margin-bottom: var(--space-2);
}

.sidebar-widget ul {
    list-style: none;
    padding-left: 0;
}

.sidebar-widget ul li {
    padding: 0.35em 0;
    border-bottom: 1px dashed var(--color-border);
}

/* 无障碍辅助类 */
.screen-reader-text {
    border: 0;
    clip: rect(1px, 1px, 1px, 1px);
    clip-path: inset(50%);
    height: 1px;
    width: 1px;
    margin: -1px;
    overflow: hidden;
    padding: 0;
    position: absolute !important;
    word-wrap: normal !important;
}

.skip-link:focus {
    clip: auto;
    clip-path: none;
    height: auto;
    width: auto;
    background: var(--color-primary);
    color: #fff;
    padding: 0.6em 1.2em;
    top: 0;
    left: 0;
    z-index: 9999;
    text-decoration: none;
}

/* 代码块 */
pre, code {
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

pre {
    background: #f6f8fa;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--space-2);
    overflow-x: auto;
    margin-bottom: var(--space-2);
}

/* ============================================================
   5. 响应式断点
   ============================================================ */
/* 平板（≤ 991px） */
@media (max-width: 991px) {
    .container { padding-left: 1rem; padding-right: 1rem; }
    .layout-with-sidebar .content-area,
    .layout-with-sidebar .sidebar-area {
        float: none;
        width: 100%;
        padding-right: 0;
    }
    .sidebar-area { margin-top: var(--space-4); }
}

/* 手机（≤ 768px） */
@media (max-width: 768px) {
    html { font-size: 15px; }

    .nav-toggle {
        display: inline-block;
    }

    .main-navigation {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-bg);
        border-bottom: 1px solid var(--color-border);
        box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    }

    .main-navigation.is-open {
        display: block;
    }

    .main-navigation ul {
        flex-direction: column;
        gap: 0;
        padding: var(--space-1) var(--space-2);
    }

    .main-navigation ul li {
        border-bottom: 1px solid var(--color-border);
    }

    .main-navigation ul li:last-child { border-bottom: none; }

    .main-navigation a {
        padding: 0.8em 0;
    }

    h1 { font-size: 1.6rem; }
    h2 { font-size: 1.35rem; }
    h3 { font-size: 1.15rem; }

    .site-header .container { min-height: 56px; }
    .site-title { font-size: 1.1rem; }
    .site-description { display: none; }
}

/* 小屏手机（≤ 480px） */
@media (max-width: 480px) {
    .post-card { padding: var(--space-2); }
    .site-content { padding: var(--space-3) 0; }
}

/* ============================================================
   7. 首页模板（front-page.php）区块样式
   ============================================================ */
.home-content { padding-top: 0; }

/* ---------- 7.1 Hero 轮播（纯 CSS，无 JS 依赖） ---------- */
.home-hero {
    position: relative;
    width: 100%;
    height: 480px;
    overflow: hidden;
    background: var(--color-primary-dark);
}

.hero-slider {
    position: absolute;
    inset: 0;
    display: flex;
}

.hero-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 1s ease;
}

.hero-slide.is-active { opacity: 1; }

.hero-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.hero-caption {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
    background: rgba(0, 0, 0, 0.35);
    padding: 0 var(--space-3);
    z-index: 2;
}

.hero-caption h1 {
    color: #fff;
    font-size: 2.6rem;
    margin-bottom: 0.8rem;
    text-shadow: 0 2px 8px rgba(0,0,0,0.4);
}

.hero-caption p { font-size: 1.15rem; margin-bottom: 1.2rem; text-shadow: 0 1px 4px rgba(0,0,0,0.4); }

.btn-accent {
    background: var(--color-accent);
    color: #fff !important;
}

.btn-accent:hover { background: #c9871a; }

/* ---------- 7.2 通用首页区块 ---------- */
.home-section { padding: var(--space-5) 0; }
.home-section:nth-child(even) { background: var(--color-bg-light); }

.section-header {
    text-align: center;
    margin-bottom: var(--space-4);
}

.section-header h2 {
    font-size: 2rem;
    color: var(--color-primary);
    position: relative;
    display: inline-block;
    padding-bottom: 0.5em;
    margin-bottom: 0.5em;
}

.section-header h2::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--color-accent);
    border-radius: 2px;
}

.section-sub {
    color: var(--color-text-light);
    font-size: 1.05rem;
}

/* ---------- 7.3 六大优势 ---------- */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-3);
}

.benefit-item {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--space-3);
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform var(--transition), box-shadow var(--transition);
}

.benefit-item:hover { transform: translateY(-4px); box-shadow: 0 8px 20px rgba(0,0,0,0.1); }

.benefit-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto var(--space-2);
    border-radius: 50%;
    background: var(--color-bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.benefit-icon img { width: 100%; height: 100%; object-fit: contain; }

.benefit-title { font-size: 1.15rem; margin-bottom: 0.4em; color: var(--color-primary); }
.benefit-text { font-size: 0.9rem; color: var(--color-text-light); margin: 0; }

/* ---------- 7.4 关于我们 ---------- */
.about-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
    align-items: stretch;
}

.about-banner {
    position: relative;
    min-height: 380px;
    border-radius: var(--radius);
    overflow: hidden;
    display: flex;
    align-items: flex-end;
}

.about-banner > img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.about-banner-text {
    position: relative;
    z-index: 1;
    background: rgba(0, 60, 140, 0.6);
    color: #fff;
    padding: var(--space-3);
    width: 100%;
}

.about-banner-text h4 { color: #fff; margin-bottom: 0.5em; }
.about-banner-text p { font-size: 0.9rem; margin-bottom: 0.6em; color: #f0f4f8; }

.about-right { display: flex; flex-direction: column; gap: var(--space-2); }

.about-img {
    flex: 1;
    border-radius: var(--radius);
    overflow: hidden;
    min-height: 120px;
}

.about-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.about-img:hover img { transform: scale(1.03); }

/* ---------- 7.5 核心优势 ---------- */
.core-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
    align-items: center;
}

.core-image { border-radius: var(--radius); overflow: hidden; box-shadow: 0 6px 24px rgba(0,0,0,0.12); }
.core-image img { width: 100%; display: block; }

.core-lists {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2);
    margin: var(--space-3) 0;
}

.core-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.core-list li {
    padding: 0.55em 0.9em;
    margin-bottom: 0.4em;
    background: var(--color-bg-light);
    border-left: 3px solid var(--color-accent);
    border-radius: 0 var(--radius) var(--radius) 0;
    font-size: 0.95rem;
}

.core-cta { margin-top: var(--space-2); }

/* ---------- 7.6 合作客户 ---------- */
.clients-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
    align-items: start;
}

.clients-info h3 { color: var(--color-primary); margin-bottom: var(--space-2); }

.accordion { border: 1px solid var(--color-border); border-radius: var(--radius); overflow: hidden; }

.accordion-item { border-bottom: 1px solid var(--color-border); }
.accordion-item:last-child { border-bottom: none; }

.accordion-header {
    display: block;
    width: 100%;
    text-align: left;
    background: var(--color-bg-light);
    border: none;
    padding: 0.9em 1.1em;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
    cursor: pointer;
    position: relative;
}

.accordion-header::after {
    content: "+";
    position: absolute;
    right: 1.1em;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.2rem;
    color: var(--color-primary);
}

.accordion-header.is-open::after { content: "−"; }

.accordion-body { padding: 1em 1.1em; font-size: 0.95rem; }
.accordion-body ul { list-style: none; padding-left: 0; margin: 0; }
.accordion-body li { padding: 0.25em 0; }

.logos-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-2);
}

.logo-item {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--space-2);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 90px;
    transition: box-shadow var(--transition);
}

.logo-item:hover { box-shadow: 0 4px 12px rgba(0,0,0,0.1); }

.logo-item img { max-height: 60px; object-fit: contain; filter: grayscale(60%); transition: filter var(--transition); }
.logo-item:hover img { filter: grayscale(0); }

/* ---------- 7.7 产品中心 ---------- */
.product-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--space-2);
}

.product-card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform var(--transition), box-shadow var(--transition);
}

.product-card:hover { transform: translateY(-4px); box-shadow: 0 8px 20px rgba(0,0,0,0.12); }

.product-thumb { overflow: hidden; aspect-ratio: 4 / 3; }
.product-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s ease; }
.product-card:hover .product-thumb img { transform: scale(1.05); }

.product-title {
    font-size: 0.95rem;
    padding: 0.8em 0.6em;
    margin: 0;
    color: var(--color-text);
}

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

/* ---------- 7.8 新闻动态 ---------- */
.news-layout {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--space-4);
    align-items: start;
}

.news-side h3 { color: var(--color-primary); font-size: 1.05rem; margin-bottom: var(--space-2); }
.news-side-h3 { margin-top: var(--space-4); }

.news-cats, .news-cases {
    list-style: none;
    padding: 0;
    margin: 0;
}

.news-cats li, .news-cases li {
    padding: 0.45em 0;
    border-bottom: 1px dashed var(--color-border);
}

.news-cases li a { color: var(--color-text); }
.news-cases li a:hover { color: var(--color-primary); }

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-2);
}

.news-card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: box-shadow var(--transition);
}

.news-card:hover { box-shadow: 0 6px 16px rgba(0,0,0,0.1); }

.news-thumb { overflow: hidden; aspect-ratio: 16 / 9; }
.news-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s ease; }
.news-card:hover .news-thumb img { transform: scale(1.04); }

.news-title {
    font-size: 0.95rem;
    line-height: 1.5;
    padding: 0.8em 0.9em 0.3em;
    margin: 0;
}

.news-meta { padding: 0 0.9em 0.8em; font-size: 0.8rem; color: var(--color-text-light); }

/* ---------- 7.9 首页响应式 ---------- */
@media (max-width: 991px) {
    .benefits-grid { grid-template-columns: repeat(2, 1fr); }
    .about-layout, .core-layout, .clients-layout, .news-layout { grid-template-columns: 1fr; }
    .product-grid { grid-template-columns: repeat(4, 1fr); }
    .news-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .home-hero { height: 340px; }
    .hero-caption h1 { font-size: 1.7rem; }
    .hero-caption p { font-size: 0.95rem; }
    .home-section { padding: var(--space-4) 0; }
    .section-header h2 { font-size: 1.5rem; }
    .benefits-grid { grid-template-columns: 1fr; }
    .product-grid { grid-template-columns: repeat(2, 1fr); }
    .news-grid { grid-template-columns: 1fr; }
    .logos-grid { grid-template-columns: repeat(2, 1fr); }
}

/* 无障碍：减少动效偏好 */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ============================================================
   6. 打印样式
   ============================================================ */
@media print {
    .site-header, .site-footer, .sidebar-area, .nav-toggle {
        display: none !important;
    }
    .content-area { float: none !important; width: 100% !important; }
    body { font-size: 12pt; color: #000; }
}