/* 全局样式重置与基础配置 - 语义化变量命名 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Inter", "PingFang SC", "Microsoft Yahei", sans-serif;
}

:root {
    /* 品牌紫系 - 轻奢渐变体系 */
    --brand-primary: #6C5CE7;    /* 主紫 */
    --brand-light: #8A7FF1;     /* 浅紫 */
    --brand-dark: #4B3BC2;      /* 深紫 */
    --brand-gradient: linear-gradient(135deg, #6C5CE7 0%, #9D8FFF 100%);
    --brand-gradient-hover: linear-gradient(135deg, #5A4BDB 0%, #8A7FF1 100%);
    
    /* 中性色体系 - 提升高级感 */
    --neutral-50: #F8F9FA;      /* 超浅灰 */
    --neutral-100: #E9ECEF;     /* 浅灰 */
    --neutral-200: #DEE2E6;     /* 中浅灰 */
    --neutral-600: #495057;     /* 深灰 */
    --neutral-800: #212529;     /* 近黑 */
    
    /* 功能色 */
    --success-500: #27AE60;     /* 在线绿 */
    --warning-500: #F39C12;     /* 认证黄 */
    --info-500: #3498DB;        /* 辅助蓝 */
    
    /* 视觉效果变量 */
    --shadow-xs: 0 1px 2px rgba(108, 92, 231, 0.05);
    --shadow-sm: 0 2px 8px rgba(108, 92, 231, 0.1);
    --shadow-md: 0 4px 16px rgba(108, 92, 231, 0.15);
    --shadow-lg: 0 8px 24px rgba(108, 92, 231, 0.2);
    
    --radius-xs: 4px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --radius-full: 50%;
    
    --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* 动态效果变量 */
    --scroll-reveal-delay: 0.1s;
    --hover-scale: 1.02;
}

body {
    background-color: var(--neutral-50);
    color: var(--neutral-800);
    line-height: 1.7;
    padding-bottom: 60px;
    overflow-x: hidden;
}

/* 顶部信息栏 - 简化版 */
.top-bar {
    background-color: rgba(248, 249, 250, 0.9);
    padding: 8px 0;
    border-bottom: 1px solid rgba(108, 92, 231, 0.1);
}

.top-bar-container {
    max-width: 1480px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-bar-left {
    display: flex;
    gap: 20px;
    font-size: 13px;
    color: var(--brand-dark);
    flex-wrap: wrap;
}

.top-bar-right {
    display: flex;
    gap: 16px;
    font-size: 13px;
    flex-wrap: wrap;
}

.top-bar-right a {
    color: var(--brand-dark);
    text-decoration: none;
    transition: var(--transition-fast);
}

.top-bar-right a:hover {
    color: var(--brand-primary);
    text-decoration: underline;
}

/* 语义化头部 - 简约大气风格 */
header {
    background: white;
    color: var(--neutral-800);
    padding: 20px 0;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.05);
    transition: var(--transition-base);
}

header.scrolled {
    padding: 16px 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.header-container {
    max-width: 1480px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 32px;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 24px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 24px;
}

/* Logo样式 - 清新温馨风格 */
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 700;
    transition: var(--transition-fast);
}

.logo:hover {
    transform: translateY(-1px);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background-color: var(--brand-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
    font-weight: 700;
    box-shadow: 0 2px 8px rgba(108, 92, 231, 0.2);
    transition: var(--transition-fast);
}

.logo:hover .logo-icon {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(108, 92, 231, 0.3);
}

/* 搜索框样式 - 简约大气风格 */
.search-container {
    flex-grow: 1;
    max-width: 450px;
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
    background-color: var(--neutral-50);
    border-radius: var(--radius-full);
    border: 1px solid var(--neutral-200);
    overflow: hidden;
    transition: var(--transition-fast);
}

.search-box:hover {
    border-color: var(--brand-primary);
    box-shadow: 0 1px 4px rgba(108, 92, 231, 0.1);
}

.search-box input {
    width: 100%;
    padding: 12px 48px 12px 20px;
    border: none;
    font-size: 14px;
    background-color: var(--neutral-50);
    color: var(--neutral-800);
    transition: var(--transition-fast);
}

.search-box input:focus {
    outline: none;
    background-color: white;
}

.search-btn {
    position: absolute;
    right: 4px;
    top: 50%;
    transform: translateY(-50%);
    background-color: var(--brand-primary);
    color: white;
    border: none;
    border-radius: var(--radius-full);
    padding: 8px 16px;
    cursor: pointer;
    font-size: 16px;
    transition: var(--transition-fast);
}

.search-btn:hover {
    background-color: var(--brand-dark);
    transform: translateY(-50%) scale(1.05);
}

/* 导航链接样式 - 清新温馨风格 */
.nav-links {
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav-links a {
    color: var(--neutral-800);
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    padding: 12px 0;
    border-bottom: 2px solid transparent;
    transition: var(--transition-fast);
    position: relative;
}

.nav-links a::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--brand-primary);
    transition: var(--transition-base);
    border-radius: 2px;
}

.nav-links a:hover::after, .nav-links a.active::after {
    width: 100%;
}

.nav-links a:hover {
    color: var(--brand-primary);
    transform: translateY(-1px);
}

.nav-links a.active {
    color: var(--brand-primary);
}

/* 用户功能区样式 - 简约大气风格 */
.user-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.action-btn {
    position: relative;
    background-color: var(--neutral-50);
    color: var(--neutral-600);
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-full);
    padding: 12px;
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    height: 44px;
}

.action-btn:hover {
    background-color: var(--brand-primary);
    color: white;
    border-color: var(--brand-primary);
    transform: translateY(-1px);
    box-shadow: 0 1px 4px rgba(108, 92, 231, 0.2);
}

.action-icon {
    font-size: 18px;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    padding: 8px 16px;
    border-radius: var(--radius-full);
    transition: var(--transition-fast);
    background-color: var(--neutral-50);
    border: 1px solid var(--neutral-200);
}

.user-menu:hover {
    background-color: var(--brand-primary);
    color: white;
    border-color: var(--brand-primary);
    transform: translateY(-1px);
    box-shadow: 0 1px 4px rgba(108, 92, 231, 0.2);
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    overflow: hidden;
    border: 2px solid var(--neutral-100);
}

.user-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.user-name {
    font-size: 14px;
    font-weight: 500;
    min-width: 60px;
}

/* 补充用户功能区样式 */
.user-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.action-btn {
    position: relative;
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
    border: none;
    border-radius: var(--radius-full);
    padding: 12px;
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    height: 44px;
}

.action-btn:hover {
    background-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.action-icon {
    font-size: 20px;
}

.notification-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    background-color: #e74c3c;
    color: white;
    border-radius: var(--radius-full);
    padding: 4px 8px;
    font-size: 12px;
    font-weight: 600;
    min-width: 20px;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 16px;
    cursor: pointer;
    padding: 12px 20px;
    border-radius: var(--radius-full);
    transition: var(--transition-fast);
    background-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.user-menu:hover {
    background-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.user-avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    overflow: hidden;
    border: 2px solid rgba(255, 255, 255, 0.3);
    position: relative;
}

.user-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.user-level {
    position: absolute;
    bottom: -4px;
    right: -4px;
    background: linear-gradient(135deg, #ffd700 0%, #ffed4e 100%);
    color: var(--brand-dark);
    font-size: 10px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-sm);
    border: 2px solid rgba(255, 255, 255, 0.9);
}

.user-name {
    font-size: 16px;
    font-weight: 500;
    min-width: 80px;
}

.theme-toggle {
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
    border: none;
    border-radius: var(--radius-full);
    padding: 12px;
    cursor: pointer;
    font-size: 20px;
    transition: var(--transition-fast);
    min-width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover {
    background-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.post-btn {
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a6f 100%);
    color: white;
    border: none;
    border-radius: var(--radius-full);
    padding: 12px 24px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: var(--transition-fast);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    gap: 8px;
}

.post-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    background: linear-gradient(135deg, #ee5a6f 0%, #ff6b6b 100%);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--brand-primary);
    font-size: 20px;
    box-shadow: var(--shadow-sm);
}

/* 信任标识 - EEAT原则落地 */
.trust-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    background-color: rgba(255, 255, 255, 0.2);
    padding: 6px 12px;
    border-radius: var(--radius-xl);
    backdrop-filter: blur(8px);
}

.trust-badge-icon {
    width: 18px;
    height: 18px;
    background-color: white;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--brand-primary);
    font-size: 10px;
    font-weight: bold;
}



/* 主容器 - 语义化网格布局 */
.container {
    max-width: 1480px;
    margin: 40px auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 68% 30%;
    gap: 2%;
    align-items: start;
}

/* 主内容区样式 */
.main-content {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

/* 通用Section样式 - 动态加载+玻璃拟态 */
section {
    background-color: white;
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
    border: 1px solid rgba(108, 92, 231, 0.08);
    opacity: 0;
    transform: translateY(20px);
    animation: scrollReveal 0.6s ease forwards;
}

/* 滚动渐显动画 - 用户体验提升 */
@keyframes scrollReveal {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

section:nth-child(1) { animation-delay: 0s; }
section:nth-child(2) { animation-delay: 0.1s; }
section:nth-child(3) { animation-delay: 0.2s; }
section:nth-child(4) { animation-delay: 0.3s; }
section:nth-child(5) { animation-delay: 0.4s; }

section:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

/* 语义化标题 - EEAT强化 */
.section-title {
    color: var(--brand-dark);
    margin-bottom: 24px;
    font-size: 24px;
    font-weight: 600;
    position: relative;
    padding-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.section-title::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 70px;
    height: 3px;
    background: var(--brand-gradient);
    border-radius: 3px;
}

.title-badge {
    font-size: 12px;
    background-color: rgba(108, 92, 231, 0.1);
    color: var(--brand-primary);
    padding: 4px 10px;
    border-radius: var(--radius-xl);
    font-weight: 500;
}

/* 帖子主体样式 - 语义化结构+EEAT信任元素 */
.post-main {
    grid-column: 1 / 2;
}

.post-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--neutral-100);
}

.post-author {
    display: flex;
    align-items: center;
    gap: 20px;
}

.avatar {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-full);
    overflow: hidden;
    border: 4px solid rgba(108, 92, 231, 0.1);
    position: relative;
    transition: var(--transition-base);
}

.avatar:hover {
    transform: scale(1.05);
    border-color: var(--brand-light);
}

/* 认证标识 - EEAT可信度强化 */
.avatar-verified {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 24px;
    height: 24px;
    background-color: var(--brand-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 12px;
    border: 2px solid white;
}

.avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.author-info {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.author-name {
    font-size: 20px;
    font-weight: 600;
    color: var(--neutral-800);
    display: flex;
    align-items: center;
    gap: 8px;
}

.author-tag-group {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 14px;
    color: var(--neutral-600);
}

.author-tag {
    display: flex;
    align-items: center;
    gap: 6px;
}

.tag-verified {
    color: var(--brand-primary);
    font-weight: 500;
    background-color: rgba(108, 92, 231, 0.08);
    padding: 2px 8px;
    border-radius: var(--radius-xs);
}

.online-status {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: var(--radius-full);
    background-color: var(--success-500);
    box-shadow: 0 0 0 2px rgba(39, 174, 96, 0.2);
}

.post-meta {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 8px;
}

.post-time {
    color: var(--neutral-600);
    font-size: 14px;
    background-color: var(--neutral-50);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--neutral-100);
}

/* 内容质量评分 - EEAT专业性强化 */
.content-quality {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--warning-500);
    background-color: rgba(243, 156, 18, 0.08);
    padding: 4px 10px;
    border-radius: var(--radius-xs);
}

.post-content {
    margin-bottom: 32px;
    font-size: 17px;
    line-height: 1.8;
    color: var(--neutral-800);
}

.post-content p {
    margin-bottom: 18px;
    text-align: justify;
}

/* 图文展示区 - 动态hover效果 */
.post-gallery {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin: 24px 0;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.gallery-item {
    border-radius: var(--radius-md);
    overflow: hidden;
    position: relative;
    height: 200px;
    cursor: pointer;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-base);
}

.gallery-item:hover img {
    transform: scale(1.05);
}

.gallery-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0,0,0,0.7));
    color: white;
    padding: 16px;
    font-size: 14px;
    opacity: 0;
    transition: var(--transition-base);
}

.gallery-item:hover .gallery-caption {
    opacity: 1;
}

/* 兴趣标签 - 语义化+动态效果 */
.interest-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin: 24px 0;
}

.interest-tag {
    background-color: rgba(108, 92, 231, 0.08);
    color: var(--brand-primary);
    padding: 8px 18px;
    border-radius: var(--radius-xl);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition-fast);
    border: 1px solid transparent;
}

.interest-tag:hover {
    background-color: rgba(108, 92, 231, 0.15);
    border-color: rgba(108, 92, 231, 0.2);
    transform: translateY(-2px);
}

/* 互动区样式 - 语义化+动态反馈 */
.interaction {
    display: flex;
    gap: 24px;
    margin-bottom: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--neutral-100);
}

.interaction-btn {
    background-color: white;
    color: var(--brand-primary);
    border: 1px solid rgba(108, 92, 231, 0.2);
    padding: 12px 24px;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 500;
    transition: var(--transition-base);
    flex: 1;
    justify-content: center;
}

.interaction-btn:hover {
    background: var(--brand-gradient);
    color: white;
    transform: translateY(-3px);
    box-shadow: var(--shadow-sm);
    border-color: transparent;
}

.interaction-btn.liked {
    background: var(--brand-gradient);
    color: white;
    border-color: transparent;
}

.interaction-btn.liked:hover {
    background: var(--brand-gradient-hover);
}

/* 评论区样式 - 语义化+用户体验优化 */
.comment-section {
    grid-column: 1 / 2;
}

.comment-stats {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    color: var(--neutral-600);
    font-size: 14px;
}

.sort-comments {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.comment-list {
    margin-bottom: 32px;
}

.comment-item {
    padding: 24px 0;
    border-bottom: 1px solid var(--neutral-100);
    display: flex;
    gap: 20px;
    transition: var(--transition-fast);
}

.comment-item:hover {
    background-color: rgba(108, 92, 231, 0.02);
    padding-left: 8px;
    margin-left: -8px;
    margin-right: -8px;
    border-radius: var(--radius-sm);
}

.comment-avatar {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    overflow: hidden;
    flex-shrink: 0;
    border: 2px solid var(--neutral-100);
}

.comment-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.comment-content-wrap {
    flex-grow: 1;
}

.comment-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.comment-author-info {
    display: flex;
    align-items: center;
    gap: 8px;
}

.comment-author {
    font-weight: 600;
    color: var(--neutral-800);
}

.comment-author-level {
    font-size: 10px;
    background-color: rgba(108, 92, 231, 0.1);
    color: var(--brand-primary);
    padding: 2px 6px;
    border-radius: var(--radius-xs);
}

.comment-time {
    color: var(--neutral-600);
    font-size: 13px;
}

.comment-content {
    font-size: 15px;
    line-height: 1.7;
    margin-bottom: 16px;
}

.comment-actions {
    display: flex;
    gap: 20px;
    font-size: 14px;
    color: var(--neutral-600);
}

.comment-action {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    transition: var(--transition-fast);
}

.comment-action:hover {
    color: var(--brand-primary);
}

/* 发布评论区 - 用户体验优化 */
.post-comment {
    background-color: var(--neutral-50);
    padding: 24px;
    border-radius: var(--radius-md);
    border: 1px solid var(--neutral-100);
}

.comment-input-wrap {
    position: relative;
    margin-bottom: 16px;
}

.post-comment textarea {
    width: 100%;
    height: 120px;
    padding: 16px;
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-md);
    resize: none;
    font-size: 15px;
    transition: var(--transition-fast);
    background-color: white;
}

.post-comment textarea:focus {
    outline: none;
    border-color: var(--brand-primary);
    box-shadow: 0 0 0 4px rgba(108, 92, 231, 0.1);
}

.char-count {
    position: absolute;
    bottom: 16px;
    right: 16px;
    font-size: 12px;
    color: var(--neutral-600);
}

.post-comment-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.comment-tips {
    font-size: 12px;
    color: var(--neutral-600);
}

.post-comment-btn {
    background: var(--brand-gradient);
    color: white;
    border: none;
    padding: 12px 32px;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    transition: var(--transition-base);
}

.post-comment-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-sm);
    background: var(--brand-gradient-hover);
}

.post-comment-btn:disabled {
    background: var(--neutral-200);
    color: var(--neutral-600);
    transform: none;
    box-shadow: none;
    cursor: not-allowed;
}

/* 相关推荐样式 - 语义化+内容充实 */
.related-posts {
    position: relative;
}

.related-posts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 24px;
}

.related-post-item {
    background-color: rgba(108, 92, 231, 0.02);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition-base);
    border: 1px solid rgba(108, 92, 231, 0.08);
}

.related-post-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: rgba(108, 92, 231, 0.15);
}

.related-post-thumbnail {
    width: 100%;
    height: 160px;
    overflow: hidden;
}

.related-post-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-base);
}

.related-post-item:hover .related-post-thumbnail img {
    transform: scale(1.05);
}

.related-post-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--neutral-800);
    margin: 16px;
    line-height: 1.4;
}

.related-post-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 16px 16px;
    font-size: 13px;
    color: var(--neutral-600);
}

/* 语义理解专区样式 - 语义化+AI赋能 */
.semantic-understanding {
    position: relative;
}

.semantic-content {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.semantic-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 24px;
}

.semantic-feature-item {
    background-color: rgba(108, 92, 231, 0.02);
    border-radius: var(--radius-md);
    padding: 24px;
    text-align: center;
    transition: var(--transition-base);
    border: 1px solid rgba(108, 92, 231, 0.08);
}

.semantic-feature-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: rgba(108, 92, 231, 0.15);
}

.semantic-feature-icon {
    font-size: 32px;
    margin-bottom: 16px;
}

.semantic-feature-item h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--neutral-800);
    margin-bottom: 12px;
}

.semantic-feature-item p {
    font-size: 14px;
    line-height: 1.6;
    color: var(--neutral-600);
}

.semantic-showcase {
    margin-top: 24px;
}

.semantic-showcase h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--neutral-800);
    margin-bottom: 20px;
}

.semantic-case {
    background-color: white;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(108, 92, 231, 0.08);
}

.semantic-case img {
    width: 100%;
    height: auto;
    display: block;
}

.semantic-case p {
    padding: 24px;
    font-size: 15px;
    line-height: 1.6;
    color: var(--neutral-600);
}

/* EEAT原则专区样式 - 专业性+权威性+可信度 */
.eeat-section {
    position: relative;
}

.eeat-content {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.eeat-principles {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 24px;
}

.eeat-principle-item {
    background-color: rgba(108, 92, 231, 0.02);
    border-radius: var(--radius-md);
    padding: 24px;
    text-align: center;
    transition: var(--transition-base);
    border: 1px solid rgba(108, 92, 231, 0.08);
}

.eeat-principle-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: rgba(108, 92, 231, 0.15);
}

.eeat-principle-icon {
    font-size: 32px;
    margin-bottom: 16px;
}

.eeat-principle-item h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--neutral-800);
    margin-bottom: 12px;
}

.eeat-principle-item p {
    font-size: 14px;
    line-height: 1.6;
    color: var(--neutral-600);
}

.eeat-certifications {
    margin-top: 24px;
}

.eeat-certifications h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--neutral-800);
    margin-bottom: 20px;
}

.certification-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.certification-item {
    background-color: white;
    border-radius: var(--radius-md);
    padding: 24px;
    transition: var(--transition-base);
    border: 1px solid rgba(108, 92, 231, 0.08);
    box-shadow: var(--shadow-sm);
}

.certification-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: rgba(108, 92, 231, 0.15);
}

.certification-icon {
    font-size: 24px;
    margin-bottom: 12px;
}

.certification-item h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--neutral-800);
    margin-bottom: 8px;
}

.certification-item p {
    font-size: 14px;
    line-height: 1.6;
    color: var(--neutral-600);
}

/* 用户体验专区样式 - 交互设计+用户体验优化 */
.ux-section {
    position: relative;
}

.ux-content {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.ux-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 24px;
}

.ux-feature-item {
    background-color: rgba(108, 92, 231, 0.02);
    border-radius: var(--radius-md);
    padding: 24px;
    text-align: center;
    transition: var(--transition-base);
    border: 1px solid rgba(108, 92, 231, 0.08);
}

.ux-feature-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: rgba(108, 92, 231, 0.15);
}

.ux-feature-icon {
    font-size: 32px;
    margin-bottom: 16px;
}

.ux-feature-item h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--neutral-800);
    margin-bottom: 12px;
}

.ux-feature-item p {
    font-size: 14px;
    line-height: 1.6;
    color: var(--neutral-600);
}

.ux-testimonials {
    margin-top: 24px;
}

.ux-testimonials h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--neutral-800);
    margin-bottom: 20px;
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.testimonial-item {
    display: flex;
    gap: 20px;
    background-color: white;
    border-radius: var(--radius-md);
    padding: 24px;
    transition: var(--transition-base);
    border: 1px solid rgba(108, 92, 231, 0.08);
    box-shadow: var(--shadow-sm);
}

.testimonial-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: rgba(108, 92, 231, 0.15);
}

.testimonial-avatar {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-full);
    overflow: hidden;
    flex-shrink: 0;
    border: 2px solid rgba(108, 92, 231, 0.1);
}

.testimonial-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.testimonial-content {
    flex-grow: 1;
}

.testimonial-rating {
    font-size: 16px;
    margin-bottom: 12px;
    color: var(--warning-500);
}

.testimonial-content p {
    font-size: 14px;
    line-height: 1.6;
    color: var(--neutral-600);
    margin-bottom: 12px;
}

.testimonial-author {
    font-size: 14px;
    font-weight: 500;
    color: var(--neutral-800);
}

/* 侧边栏样式 - 语义化+EEAT强化 */
.sidebar {
    grid-column: 2 / 3;
    display: flex;
    flex-direction: column;
    gap: 32px;
}

/* 用户资料卡片 - EEAT信任体系 */
.user-card {
    text-align: center;
    padding: 36px 24px;
    background: linear-gradient(180deg, white 0%, var(--neutral-50) 100%);
    position: relative;
    overflow: hidden;
}

.user-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: var(--brand-gradient);
    opacity: 0.05;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.user-card-avatar {
    width: 110px;
    height: 110px;
    border-radius: var(--radius-full);
    overflow: hidden;
    margin: 0 auto 20px;
    border: 4px solid white;
    box-shadow: var(--shadow-sm);
    position: relative;
    z-index: 1;
}

.user-card-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.user-card-name {
    font-size: 22px;
    font-weight: 600;
    color: var(--neutral-800);
    margin-bottom: 8px;
    position: relative;
    z-index: 1;
}

.user-card-title {
    color: var(--brand-primary);
    font-size: 15px;
    font-weight: 500;
    margin-bottom: 12px;
    position: relative;
    z-index: 1;
}

.user-card-info {
    color: var(--neutral-600);
    font-size: 14px;
    margin-bottom: 24px;
    position: relative;
    z-index: 1;
}

/* 信誉评分 - EEAT核心元素 */
.trust-score {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 20px 0;
    position: relative;
    z-index: 1;
}

.score-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--brand-primary);
    margin-bottom: 4px;
}

.score-label {
    font-size: 12px;
    color: var(--neutral-600);
    background-color: var(--neutral-100);
    padding: 2px 12px;
    border-radius: var(--radius-xl);
}

.user-card-stats {
    display: flex;
    justify-content: space-around;
    margin: 24px 0;
    padding: 20px 0;
    border-top: 1px solid var(--neutral-100);
    border-bottom: 1px solid var(--neutral-100);
    position: relative;
    z-index: 1;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-number {
    font-size: 20px;
    font-weight: 600;
    color: var(--brand-primary);
    margin-bottom: 4px;
}

.stat-label {
    font-size: 12px;
    color: var(--neutral-600);
}

.contact-btn {
    background: var(--brand-gradient);
    color: white;
    border: none;
    padding: 14px 0;
    width: 100%;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    margin-top: 12px;
    transition: var(--transition-base);
    position: relative;
    z-index: 1;
}

.contact-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-sm);
    background: var(--brand-gradient-hover);
}

/* 推荐用户 - 语义化+匹配算法提示 */
.recommend-users h3 {
    color: var(--brand-dark);
    font-size: 18px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.recommend-algorithm {
    font-size: 11px;
    color: var(--neutral-600);
    background-color: var(--neutral-50);
    padding: 2px 6px;
    border-radius: var(--radius-xs);
}

.recommend-user-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 0;
    border-bottom: 1px solid var(--neutral-100);
    transition: var(--transition-fast);
}

.recommend-user-item:hover {
    background-color: rgba(108, 92, 231, 0.02);
    padding-left: 8px;
    margin-left: -8px;
    margin-right: -8px;
    border-radius: var(--radius-sm);
}

.recommend-user-avatar {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-full);
    overflow: hidden;
    border: 2px solid var(--neutral-100);
}

.recommend-user-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.recommend-user-info {
    flex-grow: 1;
}

.recommend-user-name {
    font-weight: 500;
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.match-score {
    font-size: 10px;
    color: var(--success-500);
    background-color: rgba(39, 174, 96, 0.08);
    padding: 1px 6px;
    border-radius: var(--radius-xs);
}

.recommend-user-location {
    font-size: 12px;
    color: var(--neutral-600);
}

.follow-btn {
    background-color: white;
    color: var(--brand-primary);
    border: 1px solid rgba(108, 92, 231, 0.2);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition-fast);
}

.follow-btn:hover {
    background: var(--brand-gradient);
    color: white;
    border-color: transparent;
}

/* 热门话题 - 语义化+EEAT */
.hot-topics {
    position: relative;
}

.topic-item {
    padding: 16px 0;
    border-bottom: 1px solid var(--neutral-100);
    transition: var(--transition-fast);
}

.topic-item:last-child {
    border-bottom: none;
}

.topic-item:hover {
    transform: translateX(4px);
}

.topic-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--brand-primary);
    text-decoration: none;
    font-weight: 500;
}

.topic-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--neutral-600);
    margin-top: 6px;
}

.topic-participants {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* 热门活动样式 - 语义化+用户参与 */
.hot-activities {
    position: relative;
}

.activity-item {
    padding: 16px 0;
    border-bottom: 1px solid var(--neutral-100);
    transition: var(--transition-fast);
}

.activity-item:last-child {
    border-bottom: none;
}

.activity-item:hover {
    background-color: rgba(108, 92, 231, 0.02);
    padding-left: 8px;
    margin-left: -8px;
    margin-right: -8px;
    border-radius: var(--radius-sm);
}

.activity-date {
    font-size: 12px;
    background-color: var(--brand-primary);
    color: white;
    padding: 4px 10px;
    border-radius: var(--radius-xs);
    margin-bottom: 10px;
    display: inline-block;
}

.activity-item h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--neutral-800);
    margin-bottom: 8px;
}

.activity-item p {
    font-size: 14px;
    line-height: 1.5;
    color: var(--neutral-600);
    margin-bottom: 12px;
}

.activity-meta {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 12px;
    color: var(--neutral-600);
}

/* 内容分类样式 - 语义化+快速导航 */
.content-categories {
    position: relative;
}

.category-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.category-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background-color: rgba(108, 92, 231, 0.02);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    border: 1px solid rgba(108, 92, 231, 0.08);
    text-decoration: none;
}

.category-item:hover {
    transform: translateX(4px);
    background-color: rgba(108, 92, 231, 0.05);
    border-color: rgba(108, 92, 231, 0.15);
}

.category-icon {
    font-size: 18px;
    flex-shrink: 0;
}

.category-name {
    flex-grow: 1;
    font-size: 14px;
    font-weight: 500;
    color: var(--neutral-800);
}

.category-count {
    font-size: 12px;
    color: var(--neutral-600);
    background-color: rgba(108, 92, 231, 0.1);
    padding: 2px 8px;
    border-radius: var(--radius-xs);
}

/* 平台统计样式 - 语义化+数据展示 */
.platform-stats {
    position: relative;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.stat-card {
    background-color: rgba(108, 92, 231, 0.02);
    border-radius: var(--radius-md);
    padding: 16px;
    text-align: center;
    transition: var(--transition-fast);
    border: 1px solid rgba(108, 92, 231, 0.08);
}

.stat-card:hover {
    transform: translateY(-2px);
    background-color: rgba(108, 92, 231, 0.05);
    border-color: rgba(108, 92, 231, 0.15);
}

.platform-stats .stat-number {
    font-size: 18px;
    font-weight: 700;
    color: var(--brand-primary);
    margin-bottom: 4px;
}

.platform-stats .stat-label {
    font-size: 12px;
    color: var(--neutral-600);
}

/* 最新动态样式 - 语义化+实时更新 */
.latest-updates {
    position: relative;
}

.update-item {
    display: flex;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--neutral-100);
    transition: var(--transition-fast);
}

.update-item:last-child {
    border-bottom: none;
}

.update-item:hover {
    background-color: rgba(108, 92, 231, 0.02);
    padding-left: 8px;
    margin-left: -8px;
    margin-right: -8px;
    border-radius: var(--radius-sm);
}

.update-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    overflow: hidden;
    flex-shrink: 0;
    border: 1px solid rgba(108, 92, 231, 0.1);
}

.update-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.update-content {
    flex-grow: 1;
}

.update-content p {
    font-size: 14px;
    line-height: 1.5;
    color: var(--neutral-800);
    margin-bottom: 4px;
}

.update-time {
    font-size: 12px;
    color: var(--neutral-600);
}

/* 问答专区样式 - 语义化+知识分享 */
.qna-section {
    position: relative;
}

.qna-item {
    padding: 16px 0;
    border-bottom: 1px solid var(--neutral-100);
    transition: var(--transition-fast);
}

.qna-item:last-child {
    border-bottom: none;
}

.qna-item:hover {
    background-color: rgba(108, 92, 231, 0.02);
    padding-left: 8px;
    margin-left: -8px;
    margin-right: -8px;
    border-radius: var(--radius-sm);
}

.qna-item h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--neutral-800);
    margin-bottom: 8px;
}

.qna-item p {
    font-size: 14px;
    line-height: 1.5;
    color: var(--neutral-600);
    margin-bottom: 12px;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.qna-meta {
    display: flex;
    gap: 12px;
    font-size: 12px;
    color: var(--neutral-600);
}

/* 资源分享样式 - 语义化+学习资料 */
.resources-section {
    position: relative;
}

.resources-section .section-title {
    font-size: 26px;
}

.resource-item {
    padding: 10px 0;
    border-bottom: 1px solid var(--neutral-100);
    transition: var(--transition-fast);
}

.resource-item:last-child {
    border-bottom: none;
}

.resource-item:hover {
    background-color: rgba(108, 92, 231, 0.02);
    padding-left: 6px;
    margin-left: -6px;
    margin-right: -6px;
    border-radius: var(--radius-sm);
}

.resource-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 4px;
}

.resource-icon {
    font-size: 20px;
}

.resource-item h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--neutral-800);
    margin-bottom: 0;
}

.resource-item p {
    font-size: 14px;
    line-height: 1.4;
    color: var(--neutral-600);
    margin-bottom: 6px;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.resource-meta {
    display: flex;
    flex-direction: row;
    gap: 12px;
    font-size: 12px;
    color: var(--neutral-600);
}

/* 专家推荐样式 - 语义化+专业用户 */
.experts-section {
    position: relative;
}

.experts-section .section-title {
    font-size: 26px;
}

.expert-item {
    display: flex;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid var(--neutral-100);
    transition: var(--transition-fast);
}

.expert-item:last-child {
    border-bottom: none;
}

.expert-item:hover {
    background-color: rgba(108, 92, 231, 0.02);
    padding-left: 6px;
    margin-left: -6px;
    margin-right: -6px;
    border-radius: var(--radius-sm);
}

.expert-avatar {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    overflow: hidden;
    flex-shrink: 0;
    border: 1px solid rgba(108, 92, 231, 0.1);
}

.expert-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.expert-info {
    flex-grow: 1;
}

.expert-info h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--neutral-800);
    margin-bottom: 3px;
}

.expert-info p {
    font-size: 14px;
    color: var(--neutral-600);
    margin-bottom: 4px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.expert-stats {
    display: flex;
    flex-direction: column;
    gap: 2px;
    font-size: 12px;
    color: var(--neutral-600);
    margin-bottom: 6px;
}

.expert-info .follow-btn {
    margin-top: 2px;
    padding: 6px 14px;
    font-size: 13px;
}

/* 响应式适配 - 全设备用户体验 */
@media (max-width: 992px) {
    .container {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        grid-column: 1 / 2;
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
    
    .user-card {
        grid-column: 1 / 2;
    }
    
    .recommend-users, .hot-topics, .hot-activities, .content-categories, .platform-stats, .latest-updates, .qna-section, .resources-section, .experts-section {
        grid-column: 2 / 3;
    }
}

@media (max-width: 1200px) {
    .search-container {
        max-width: 350px;
    }
    
    .header-left {
        gap: 16px;
    }
    
    .header-right {
        gap: 16px;
    }
    
    .user-actions {
        gap: 12px;
    }
}

@media (max-width: 992px) {
    .top-bar {
        display: none;
    }
    
    .header-container {
        flex-direction: column;
        gap: 20px;
        align-items: stretch;
    }
    
    .header-left {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .search-container {
        max-width: 100%;
    }
    
    .header-right {
        flex-direction: column;
        gap: 16px;
    }
    
    .nav-links {
        width: 100%;
        justify-content: space-around;
        flex-wrap: wrap;
    }
    
    .user-actions {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .header-container {
        gap: 16px;
    }
    
    .nav-links {
        gap: 12px;
        justify-content: space-between;
    }
    
    .nav-links a {
        font-size: 14px;
    }
    
    .user-actions {
        gap: 8px;
    }
    
    .action-btn {
        padding: 8px;
    }
    
    .user-menu {
        padding: 6px 12px;
    }
    
    .user-name {
        display: none;
    }
    
    .post-gallery {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .related-posts-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .semantic-features {
        grid-template-columns: 1fr;
    }
    
    .eeat-principles {
        grid-template-columns: 1fr;
    }
    
    .certification-grid {
        grid-template-columns: 1fr;
    }
    
    .ux-features {
        grid-template-columns: 1fr;
    }
    
    .testimonial-grid {
        grid-template-columns: 1fr;
    }
    
    .interaction {
        flex-wrap: wrap;
    }
    
    .interaction-btn {
        flex-basis: calc(50% - 12px);
    }
    
    .sidebar {
        grid-template-columns: 1fr;
    }
    
    .user-card, .recommend-users, .hot-topics, .hot-activities, .content-categories, .platform-stats, .latest-updates, .qna-section, .resources-section, .experts-section {
        grid-column: 1 / 2;
    }
}

@media (max-width: 480px) {
    .header-left {
        flex-direction: column;
        align-items: center;
        gap: 12px;
    }
    
    .trust-badge {
        font-size: 12px;
        padding: 4px 8px;
    }
    
    .search-box input {
        padding: 10px 40px 10px 16px;
        font-size: 13px;
    }
    
    .nav-links {
        gap: 8px;
    }
    
    .nav-links a {
        font-size: 13px;
    }
    
    .theme-toggle {
        display: none;
    }
    
    .post-gallery {
        grid-template-columns: 1fr;
    }
    
    .related-posts-grid {
        grid-template-columns: 1fr;
    }
    
    .semantic-features {
        grid-template-columns: 1fr;
    }
    
    .eeat-principles {
        grid-template-columns: 1fr;
    }
    
    .certification-grid {
        grid-template-columns: 1fr;
    }
    
    .ux-features {
        grid-template-columns: 1fr;
    }
    
    .testimonial-grid {
        grid-template-columns: 1fr;
    }
    
    .interaction-btn {
        flex-basis: 100%;
    }
    
    section {
        padding: 20px;
    }
    
    .post-header {
        flex-direction: column;
        gap: 16px;
    }
    
    .post-meta {
        align-items: flex-start;
    }
    
    .testimonial-item {
        flex-direction: column;
        text-align: center;
    }
}

/* 页脚样式 - 简约大气风格 */
.footer {
    background: white;
    color: var(--neutral-800);
    padding: 40px 0 24px;
    margin-top: 60px;
    position: relative;
    border-top: 1px solid var(--neutral-100);
}

.footer::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background-color: var(--neutral-100);
}

.footer-container {
    max-width: 1480px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 30% 25% 25% 20%;
    gap: 24px;
    position: relative;
    z-index: 1;
}

@media (max-width: 992px) {
    .footer-container {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

/* 网站logo和简介 */
.footer-info {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 16px;
    transition: var(--transition-fast);
}

.footer-logo:hover {
    transform: translateY(-1px);
}

.footer-logo .logo-icon {
    width: 52px;
    height: 52px;
    background-color: var(--brand-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 26px;
    font-weight: 700;
    box-shadow: 0 2px 8px rgba(108, 92, 231, 0.2);
    transition: var(--transition-fast);
}

.footer-logo:hover .logo-icon {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(108, 92, 231, 0.3);
}

.footer-logo .logo-text {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.footer-logo .logo-main {
    font-size: 28px;
    font-weight: 700;
    display: block;
    color: var(--neutral-800);
}

.footer-logo .logo-sub {
    font-size: 14px;
    opacity: 0.7;
    font-weight: 400;
    display: block;
    color: var(--neutral-600);
}

.footer-features {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.footer-features h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
    position: relative;
    padding-bottom: 12px;
    color: var(--neutral-800);
}

.footer-features h3::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 40px;
    height: 2px;
    background: var(--brand-gradient);
    border-radius: 2px;
}

.footer-features ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-features ul li {
    transition: var(--transition-fast);
}

.footer-features ul li:hover {
    transform: translateX(2px);
}

.footer-features ul li a {
    color: var(--neutral-600);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition-fast);
}

.footer-features ul li a:hover {
    color: var(--brand-primary);
    text-decoration: underline;
}

.footer-description {
    font-size: 13px;
    line-height: 1.5;
    opacity: 0.8;
    max-width: 350px;
    margin-bottom: 8px;
}

.footer-advantages {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 8px;
}

.footer-advantage-item {
    background-color: rgba(108, 92, 231, 0.08);
    color: var(--brand-primary);
    padding: 6px 12px;
    border-radius: var(--radius-xs);
    font-size: 12px;
    font-weight: 500;
    transition: var(--transition-fast);
}

.footer-advantage-item:hover {
    background-color: rgba(108, 92, 231, 0.15);
    transform: translateY(-1px);
}



/* 导航链接 */
.footer-links,
.footer-contact,
.footer-social {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.footer-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
    position: relative;
    padding-bottom: 12px;
    color: var(--brand-dark);
}

.footer-title::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 40px;
    height: 2px;
    background: var(--brand-gradient);
    border-radius: 2px;
}

.footer-links ul {
    list-style: none;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px 16px;
}

.footer-links a {
    color: var(--neutral-600);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition-fast);
    position: relative;
    padding-bottom: 2px;
    display: inline-block;
}

.footer-links a::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--brand-primary);
    transition: var(--transition-base);
}

.footer-links a:hover {
    color: var(--brand-primary);
    transform: translateX(2px);
}

.footer-links a:hover::after {
    width: 100%;
}

/* 联系方式 */
.footer-contact ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
    font-size: 14px;
    opacity: 0.8;
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    transition: var(--transition-fast);
}

.footer-contact li:hover {
    transform: translateX(2px);
    color: var(--brand-primary);
}

/* 社交媒体 */
.social-icons {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.social-icon {
    display: flex;
    align-items: center;
    gap: 12px;
    background-color: var(--neutral-50);
    color: var(--neutral-800);
    padding: 12px 18px;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition-base);
    border: 1px solid var(--neutral-200);
}

.social-icon:hover {
    background-color: var(--brand-primary);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(108, 92, 231, 0.2);
    border-color: var(--brand-primary);
}

.social-icon-emoji {
    font-size: 18px;
    min-width: 24px;
}

.social-icon-text {
    flex-grow: 1;
}







/* 版权信息 */
.footer-bottom {
    border-top: 1px solid var(--neutral-200);
    margin-top: 32px;
    padding-top: 16px;
    position: relative;
    z-index: 1;
}

.footer-bottom-container {
    max-width: 1480px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.copyright {
    font-size: 13px;
    opacity: 0.7;
    flex: 1;
    min-width: 200px;
}

.footer-policies {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.footer-policies a {
    color: var(--neutral-600);
    text-decoration: none;
    font-size: 13px;
    transition: var(--transition-fast);
    white-space: nowrap;
}

.footer-policies a:hover {
    color: var(--brand-primary);
    text-decoration: underline;
}

.footer-disclaimer {
    font-size: 11px;
    color: var(--neutral-500);
    margin-top: 8px;
    width: 100%;
    text-align: center;
    line-height: 1.4;
}

/* 响应式适配 */
@media (max-width: 1200px) {
    .footer-container {
        grid-template-columns: 25% 20% 20% 35%;
        gap: 24px;
    }
}

@media (max-width: 992px) {
    .footer-container {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
    
    .footer-info {
        grid-column: 1 / 3;
    }
}

@media (max-width: 768px) {
    .footer {
        padding: 40px 0 24px;
    }
    
    .footer-container {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .footer-info {
        grid-column: 1 / 2;
    }
    
    .footer-bottom-container {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
    
    .footer-policies {
        gap: 16px;
    }
}

@media (max-width: 480px) {
    .footer-container {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .footer-info {
        grid-column: 1 / 2;
    }
    
    .footer-logo .logo-main {
        font-size: 20px;
    }
    
    .footer-logo .logo-icon {
        width: 40px;
        height: 40px;
        font-size: 20px;
    }
    
    .footer-description {
        font-size: 13px;
    }
    
    .footer-title {
        font-size: 14px;
    }
    
    .footer-links a,
    .footer-contact ul,
    .social-icon {
        font-size: 13px;
    }
    
    .copyright,
    .footer-policies a {
        font-size: 12px;
    }
}