/* --- 商贸公司风格样式表 (Fixed Version) --- */

/* 1. 全局与基础样式 */
:root {
    --primary-color: #1e3a5f;     /* 深蓝色 - 专业、稳重 */
    --secondary-color: #2c5aa0;   /* 中蓝色 - 可靠、专业 */
    --accent-color: #d4af37;      /* 金色 - 财富、品质 */
    --accent-light: #f0e6d2;      /* 浅金色 - 优雅、温暖 */
    --dark-color: #2c3e50;        /* 深灰色 - 正式、严肃 */
    --light-color: #f8f9fa;       /* 浅灰色 - 干净、专业 */
    --text-color: #333333;        /* 深灰文字 - 易读性 */
    --text-light: #666666;        /* 中灰文字 - 次级内容 */
    --border-color: #e0e0e0;      /* 浅灰边框 */
    --white-color: #ffffff;       /* 纯白 */
    --shadow-light: 0 2px 12px rgba(0, 0, 0, 0.08); /* 浅阴影 */
    --shadow-medium: 0 4px 20px rgba(0, 0, 0, 0.12); /* 中等阴影 */
    --gradient-primary: linear-gradient(135deg, #1e3a5f 0%, #2c5aa0 100%);
    --gradient-accent: linear-gradient(135deg, #d4af37 0%, #f0c543 100%);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.7;
    color: var(--text-color);
    background-color: var(--white-color);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    font-size: 16px;
}

main {
    flex: 1;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

h1, h2, h3, h4 {
    color: var(--dark-color);
    margin-bottom: 1.2rem;
    font-weight: 600;
    line-height: 1.3;
}

h1 {
    font-size: 2.8rem;
    letter-spacing: -0.5px;
}

h2 {
    font-size: 2.2rem;
    text-align: center;
    margin-bottom: 3.5rem;
    position: relative;
    padding-bottom: 1.2rem;
}

h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-accent);
    border-radius: 2px;
}

h3 {
    font-size: 1.6rem;
    color: var(--primary-color);
}

h4 {
    font-size: 1.25rem;
}

section {
    padding: 80px 0;
}

.btn {
    display: inline-block;
    padding: 14px 32px;
    background: var(--gradient-accent);
    color: var(--white-color);
    text-decoration: none;
    border-radius: 4px;
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    text-align: center;
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.2);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(212, 175, 55, 0.3);
    color: var(--white-color);
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 100%;
    background: var(--primary-color);
    transition: width 0.3s ease;
    z-index: -1;
}

.btn:hover::before {
    width: 100%;
}

/* 2. 头部与导航 */
.main-header {
    background-color: var(--white-color);
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
    position: sticky;
    top: 0;
    z-index: 1000;
    width: 100%;
    transition: all 0.3s ease;
}

.main-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    letter-spacing: 0.5px;
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.main-nav ul li a {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 500;
    font-size: 1rem;
    position: relative;
    padding: 8px 0;
    transition: color 0.3s ease;
}

.main-nav ul li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-accent);
    transition: width 0.3s ease;
}

.main-nav ul li a:hover::after,
.main-nav ul li a.active::after {
    width: 100%;
}

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

.menu-toggle {
    display: none;
    cursor: pointer;
    background: none;
    border: none;
    font-size: 1.8rem;
    color: var(--primary-color);
    padding: 5px;
}

/* 3. 英雄区域 */
#hero {
    background: var(--gradient-primary);
    color: var(--white-color);
    height: 85vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0 20px;
    position: relative;
    overflow: hidden;
}

#hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><rect width="100" height="100" fill="none"/><path d="M0,50 Q25,40 50,50 T100,50" stroke="rgba(255,255,255,0.05)" stroke-width="2" fill="none"/><path d="M0,70 Q25,60 50,70 T100,70" stroke="rgba(255,255,255,0.05)" stroke-width="2" fill="none"/><path d="M0,30 Q25,20 50,30 T100,30" stroke="rgba(255,255,255,0.05)" stroke-width="2" fill="none"/></svg>');
    opacity: 0.3;
}

.hero-content {
    max-width: 800px;
    z-index: 2;
}

#hero h1 {
    font-size: 3.5rem;
    color: var(--white-color);
    margin-bottom: 1.5rem;
    font-weight: 700;
    line-height: 1.2;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

#hero p {
    font-size: 1.3rem;
    max-width: 700px;
    margin: 0 auto 2.5rem;
    opacity: 0.9;
    line-height: 1.6;
}

/* 4. 解决方案 */
#solutions {
    background-color: var(--white-color);
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.solution-card {
    background-color: var(--white-color);
    padding: 35px 30px;
    border-radius: 10px;
    box-shadow: var(--shadow-light);
    text-align: center;
    transition: all 0.4s ease;
    border: 1px solid rgba(224, 224, 224, 0.5);
    position: relative;
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.solution-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-medium);
    border-color: var(--accent-light);
}

.solution-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 25px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    color: var(--white-color);
    font-size: 2rem; /* 稍微调大一点 */
    font-weight: normal; /* 图标一般不需要 bold */
    line-height: 1;
}

/* [修复] 添加缺失的图标内容，使用 Unicode 字符模拟图标 */
.icon-cloud::before { content: '☁'; }     /* 云 */
.icon-data::before { content: '📊'; }     /* 柱状图 */
.icon-ai::before { content: '🧠'; }       /* 大脑 */
.icon-security::before { content: '🛡'; } /* 盾牌 */
.icon-iot::before { content: '📡'; }      /* 天线/卫星 */
.icon-consult::before { content: '🤝'; }  /* 握手 */

/* 为不同卡片配置背景色渐变 */
.solution-card:nth-child(1) .solution-icon { background: linear-gradient(135deg, #1e3a5f 0%, #3a6bc7 100%); }
.solution-card:nth-child(2) .solution-icon { background: linear-gradient(135deg, #2c5aa0 0%, #4a8cff 100%); }
.solution-card:nth-child(3) .solution-icon { background: linear-gradient(135deg, #d4af37 0%, #f0c543 100%); }
.solution-card:nth-child(4) .solution-icon { background: linear-gradient(135deg, #1e3a5f 0%, #2c5aa0 100%); }
.solution-card:nth-child(5) .solution-icon { background: linear-gradient(135deg, #2c5aa0 0%, #3a6bc7 100%); }
.solution-card:nth-child(6) .solution-icon { background: linear-gradient(135deg, #d4af37 0%, #e6c158 100%); }

.solution-card h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.solution-card p {
    color: var(--text-light);
    line-height: 1.7;
    flex-grow: 1;
}

/* 5. 关于我们 */
#about {
    background-color: var(--light-color);
}

.about-content {
    display: flex;
    align-items: center;
    gap: 60px;
}

.about-text {
    flex: 1;
}

.about-text p {
    margin-bottom: 1.5rem;
    color: var(--text-color);
    line-height: 1.8;
}

.about-visual {
    flex: 1;
    height: 350px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white-color);
    font-size: 1.8rem;
    font-weight: 600;
    box-shadow: var(--shadow-medium);
    position: relative;
    overflow: hidden;
}

.about-visual::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(212, 175, 55, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(44, 90, 160, 0.1) 0%, transparent 50%);
}

.about-visual span {
    z-index: 1;
    text-align: center;
    padding: 20px;
    font-size: 1.6rem;
    letter-spacing: 1px;
}

.about-action {
    margin-top: 2.5rem;
}

/* 6. 最新动态/内容区域 */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 35px;
}

.news-card {
    background-color: var(--white-color);
    border-radius: 10px;
    box-shadow: var(--shadow-light);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: all 0.4s ease;
    border: 1px solid var(--border-color);
    height: 100%;
}

.news-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-medium);
    border-color: var(--accent-light);
}

.news-cover {
    height: 220px;
    width: 100%;
    overflow: hidden;
    position: relative;
}

.news-cover::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, transparent 70%, rgba(0, 0, 0, 0.1));
}

.news-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.6s ease;
}

.news-card:hover .news-cover img {
    transform: scale(1.05);
}

.news-content {
    padding: 25px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.news-content h4 {
    font-size: 1.3rem;
    margin-bottom: 12px;
    line-height: 1.4;
}

.news-content h4 a {
    text-decoration: none;
    color: var(--dark-color);
    transition: color 0.3s;
}

.news-content h4 a:hover {
    color: var(--secondary-color);
}

.news-meta {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 15px;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.news-meta a {
    color: var(--text-light);     /* 默认保持灰色，与日期协调 */
    text-decoration: none;        /* 去掉下划线 */
    font-weight: 500;             /* 稍微加粗，区分于纯文本 */
    transition: all 0.3s ease;    /* 平滑过渡 */
    border-bottom: 1px solid transparent; /* 预留边框位置 */
}

.news-meta a:hover {
    color: var(--secondary-color); /* 悬停变为主题蓝色 */
    border-bottom-color: var(--secondary-color); /* 出现细下划线 */
}

.news-content p {
    flex-grow: 1;
    margin-bottom: 20px;
    font-size: 0.95rem;
    color: var(--text-color);
    line-height: 1.7;
}

.read-more-link {
    text-decoration: none;
    color: var(--secondary-color);
    font-weight: 600;
    align-self: flex-start;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    transition: all 0.3s ease;
}

.read-more-link:hover {
    color: var(--primary-color);
    gap: 10px;
}

/* 7. FAQ */
#faq {
    background-color: var(--light-color);
}

.faq-accordion {
    max-width: 850px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--border-color);
    background-color: var(--white-color);
    border-radius: 8px;
    margin-bottom: 12px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.faq-item:last-child {
    margin-bottom: 0;
}

.faq-question {
    width: 100%;
    background: var(--white-color);
    border: none;
    text-align: left;
    padding: 22px 25px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--primary-color);
    transition: all 0.3s ease;
}

.faq-question:hover {
    background-color: rgba(30, 58, 95, 0.03);
}

.faq-question::after {
    content: '+';
    font-size: 1.8rem;
    color: var(--accent-color);
    transition: transform 0.3s ease;
    font-weight: 300;
}

.faq-item.active .faq-question::after {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
    padding: 0 25px;
}

.faq-item.active .faq-answer {
    padding: 0 25px 25px;
}

.faq-answer p {
    color: var(--text-color);
    line-height: 1.7;
    padding-top: 10px;
}

/* 8. 页脚 */
.main-footer {
    background: var(--gradient-primary);
    color: var(--white-color);
    padding: 70px 0 30px;
    margin-top: auto;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 50px;
}

.footer-column {
    flex: 1;
    min-width: 220px;
}

.footer-column h4 {
    color: var(--white-color);
    margin-bottom: 1.8rem;
    font-size: 1.3rem;
    position: relative;
    padding-bottom: 10px;
}

.footer-column h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--accent-color);
}

.footer-column ul {
    list-style: none;
}

.footer-column ul li {
    margin-bottom: 12px;
}

.footer-column ul li a {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.footer-column ul li a:hover {
    color: var(--accent-color);
    transform: translateX(5px);
}

.footer-column p {
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}

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

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

/* CMS 页面样式 */
.breadcrumb {
    padding: 20px 0;
    font-size: 0.9rem;
    color: var(--text-light);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 40px;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

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

.breadcrumb a:hover {
    color: var(--primary-color);
}

.breadcrumb span {
    color: var(--border-color);
}

.page-container {
    padding: 70px 0 100px;
}

.page-header {
    text-align: left;
    margin-bottom: 50px;
}

.page-header.center-header {
    text-align: center;
}

.page-header.center-header h1::after {
    left: 50%;
    transform: translateX(-50%);
}

.page-header h1 {
    font-size: 2.5rem;
    color: var(--primary-color);
    position: relative;
    padding-bottom: 15px;
}

.page-header h1::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 4px;
    background: var(--gradient-accent);
    border-radius: 2px;
}

.page-meta {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-top: 15px;
    line-height: 1.6;
}

.page-meta a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.page-meta a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    margin-top: 60px;
}

.page-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-color);
    text-decoration: none;
    transition: all 0.3s ease;
    font-weight: 600;
    background-color: var(--white-color);
}

.page-btn:hover {
    background: var(--gradient-primary);
    color: var(--white-color);
    border-color: transparent;
    transform: translateY(-2px);
}

.page-current {
    display: inline-flex;
    align-items: center;
    height: 45px;
    padding: 0 20px;
    font-weight: 600;
    color: var(--primary-color);
    background-color: var(--light-color);
    border-radius: 25px;
}

/* [优化] 显式定义单页容器样式，防止内联样式失效或不一致 */
.single-post-wrapper {
    max-width: 800px;
    margin: 0 auto;
    width: 100%;
}

.markdown-body {
    color: var(--text-color);
    font-size: 1.1rem;
    line-height: 1.8;
    max-width: 100%;
    overflow-x: hidden;
}

.markdown-body h2 {
    font-size: 1.9rem;
    margin-top: 2.8rem;
    margin-bottom: 1.8rem;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
    text-align: left;
}

.markdown-body h2::after {
    display: none;
}

.markdown-body h3 {
    font-size: 1.5rem;
    margin-top: 2.5rem;
    margin-bottom: 1.2rem;
    color: var(--primary-color);
}

.markdown-body p {
    margin-bottom: 1.8rem;
}

.markdown-body ul,
.markdown-body ol {
    padding-left: 24px;
    margin-bottom: 1.8rem;
    list-style: none; /* [修复] 移除默认列表样式，防止双重符号 */
}

.markdown-body li {
    margin-bottom: 0.8rem;
    position: relative;
}

.markdown-body ul li::before {
    content: '•';
    color: var(--accent-color);
    font-weight: bold;
    display: inline-block;
    width: 1em;
    margin-left: -1em;
}

.markdown-body img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 25px 0;
    box-shadow: var(--shadow-light);
    border: 1px solid var(--border-color);
}

.markdown-body blockquote {
    border-left: 4px solid var(--accent-color);
    background-color: var(--accent-light);
    padding: 25px;
    margin: 25px 0;
    border-radius: 0 8px 8px 0;
    font-style: italic;
    color: var(--dark-color);
    position: relative;
}

.markdown-body a {
    color: var(--secondary-color);
    text-decoration: none;
    border-bottom: 1px solid rgba(44, 90, 160, 0.3);
    transition: all 0.3s ease;
}

.markdown-body a:hover {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.markdown-body hr {
    border: 0;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--border-color), transparent);
    margin: 40px 0;
}

.markdown-body pre {
    background: #1e3a5f;
    color: #f0f0f0;
    padding: 25px;
    border-radius: 8px;
    overflow-x: auto;
    margin-bottom: 25px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    font-family: 'Courier New', monospace;
    font-size: 0.95rem;
}

.post-tags {
    margin-top: 50px;
    padding-top: 25px;
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tag-pill {
    display: inline-block;
    background: var(--light-color);
    padding: 8px 18px;
    border-radius: 25px;
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.tag-pill:hover {
    background: var(--gradient-primary);
    color: var(--white-color);
    border-color: transparent;
    transform: translateY(-2px);
}

.post-navigation {
    display: flex;
    justify-content: space-between;
    margin-top: 50px;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
}

.nav-next,
.nav-prev {
    max-width: 45%;
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 600;
    padding: 15px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.nav-next:hover,
.nav-prev:hover {
    color: var(--primary-color);
    background-color: rgba(30, 58, 95, 0.05);
    transform: translateY(-3px);
}

.nav-next span,
.nav-prev span {
    display: block;
    font-size: 0.85rem;
    color: var(--text-light);
    font-weight: normal;
    margin-bottom: 8px;
}

.error-page {
    text-align: center;
    padding: 120px 0;
}

.error-page h1 {
    font-size: 6rem;
    color: var(--primary-color);
    margin-bottom: 10px;
    font-weight: 700;
}

.error-page p {
    font-size: 1.5rem;
    margin-bottom: 40px;
    color: var(--text-light);
}

.no-content {
    text-align: center;
    padding: 60px 40px;
    color: var(--text-light);
    background: var(--light-color);
    border-radius: 10px;
    font-size: 1.1rem;
    grid-column: 1 / -1;
}

/* 响应式设计 */
@media (max-width: 1100px) {
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    #hero h1 {
        font-size: 3rem;
    }
    
    .about-content {
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .logo {
        font-size: 1.5rem;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .main-nav {
        position: fixed;
        top: 80px;
        left: 0;
        width: 100%;
        background-color: var(--white-color);
        flex-direction: column;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s ease-in-out;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        border-top: 1px solid var(--border-color); /* [优化] 增加顶部分割线 */
    }
    
    .main-nav.active {
        max-height: 80vh; /* [优化] 使用视口高度 */
        padding: 20px 0;
        overflow-y: auto; /* [修复] 允许菜单过长时滚动 */
    }
    
    .main-nav ul {
        flex-direction: column;
        padding: 0;
        width: 100%;
    }
    
    .main-nav ul li {
        margin: 0;
        width: 100%;
        text-align: center;
    }
    
    .main-nav ul li a {
        display: block;
        padding: 15px 20px;
        width: 100%;
    }
    
    #hero h1 {
        font-size: 2.5rem;
    }
    
    #hero p {
        font-size: 1.1rem;
    }
    
    #hero {
        height: 70vh;
        min-height: 500px;
    }
    
    .about-content {
        flex-direction: column;
    }
    
    .about-visual {
        height: 250px;
        width: 100%;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: left;
    }
    
    section {
        padding: 60px 0;
    }
    
    h2 {
        font-size: 1.8rem;
        margin-bottom: 2.5rem;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .solutions-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .post-navigation {
        flex-direction: column;
        gap: 20px;
    }
    
    .nav-next,
    .nav-prev {
        max-width: 100%;
    }
    
    /* [修复] 移动端单页容器边距 */
    .single-post-wrapper {
        padding: 0 5px; 
    }
}

@media (max-width: 480px) {
    #hero h1 {
        font-size: 2rem;
    }
    
    #hero p {
        font-size: 1rem;
    }
    
    section {
        padding: 50px 0;
    }
    
    h2 {
        font-size: 1.6rem;
    }
    
    .container {
        padding: 0 20px;
    }
    
    .solution-card,
    .news-card {
        padding: 25px 20px;
    }
    
    .error-page h1 {
        font-size: 4rem;
    }
    
    .error-page p {
        font-size: 1.2rem;
    }
}