/* ==========================================
   3D沉浸式蜘蛛池模板 - 核心样式
   风格: 玻璃态 + 3D深度 + 发光效果
   ========================================== */

/* ---------- CSS变量定义 ---------- */
:root {
    /* 主色调 - 深空紫蓝渐变系 */
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    --secondary-gradient: linear-gradient(45deg, #4facfe 0%, #00f2fe 100%);
    --accent-gradient: linear-gradient(90deg, #fa709a 0%, #fee140 100%);
    
    /* 背景色 */
    --bg-deep: #0a0a1a;
    --bg-dark: #121228;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-glass: rgba(255, 255, 255, 0.05);
    
    /* 文字色 */
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.8);
    --text-muted: rgba(255, 255, 255, 0.5);
    
    /* 发光色 */
    --glow-primary: rgba(102, 126, 234, 0.6);
    --glow-secondary: rgba(0, 242, 254, 0.4);
    --glow-accent: rgba(250, 112, 154, 0.5);
    
    /* 边框 */
    --border-glass: rgba(255, 255, 255, 0.1);
    --border-glow: rgba(102, 126, 234, 0.3);
    
    /* 3D效果 */
    --perspective: 1200px;
    --transform-style: preserve-3d;
    
    /* 动画时间 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* 阴影 */
    --shadow-glow: 0 0 40px rgba(102, 126, 234, 0.3);
    --shadow-depth: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

/* ---------- 基础重置 ---------- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg-deep);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    position: relative;
}

/* ---------- 动态背景层 ---------- */
.bg-layer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.gradient-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(102, 126, 234, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(118, 75, 162, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(0, 242, 254, 0.05) 0%, transparent 70%),
        var(--bg-deep);
    animation: bgShift 20s ease-in-out infinite;
}

@keyframes bgShift {
    0%, 100% { transform: scale(1) rotate(0deg); }
    50% { transform: scale(1.1) rotate(2deg); }
}

.noise-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    pointer-events: none;
}

/* 发光球体 */
.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: orbFloat 15s ease-in-out infinite;
}

.orb-1 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    top: 10%;
    left: -100px;
    animation-delay: 0s;
}

.orb-2 {
    width: 300px;
    height: 300px;
    background: linear-gradient(45deg, #4facfe, #00f2fe);
    top: 60%;
    right: -50px;
    animation-delay: -5s;
}

.orb-3 {
    width: 250px;
    height: 250px;
    background: linear-gradient(90deg, #fa709a, #fee140);
    bottom: 20%;
    left: 30%;
    animation-delay: -10s;
}

@keyframes orbFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(50px, -30px) scale(1.1); }
    50% { transform: translate(20px, 50px) scale(0.95); }
    75% { transform: translate(-30px, 20px) scale(1.05); }
}

/* ---------- 玻璃态组件 ---------- */
.glass {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass);
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

/* ---------- 头部导航 ---------- */
.main-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
    margin-bottom: 2rem;
    transition: var(--transition-normal);
}

.main-header.scrolled {
    padding: 0.5rem 0;
    background: rgba(10, 10, 26, 0.9);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

/* Logo区域 */
.logo-section {
    text-align: center;
    position: relative;
}

.logo-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    height: 100px;
    background: radial-gradient(ellipse, var(--glow-primary) 0%, transparent 70%);
    opacity: 0.5;
    filter: blur(30px);
    pointer-events: none;
}

.site-logo {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.logo-link {
    text-decoration: none;
    color: var(--text-primary);
    position: relative;
    display: inline-block;
}

.logo-text {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    text-shadow: 0 0 30px rgba(102, 126, 234, 0.5);
}

.logo-shine {
    position: absolute;
    top: 0;
    left: -100%;
    width: 50%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    animation: logoShine 4s ease-in-out infinite;
}

@keyframes logoShine {
    0%, 80%, 100% { left: -100%; }
    90% { left: 150%; }
}

.site-desc {
    color: var(--text-muted);
    font-size: 0.9rem;
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* 导航菜单 */
.nav-glow-line {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, #667eea, #764ba2, #00f2fe, transparent);
    opacity: 0.8;
    z-index: 1001;
}

.main-nav {
    position: relative;
    width: 100%;
    max-width: 800px;
}

.nav-list {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    list-style: none;
    flex-wrap: wrap;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: block;
    padding: 0.8rem 1.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    transition: var(--transition-fast);
}

.nav-link .link-text {
    position: relative;
    z-index: 2;
}

.nav-link .link-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary-gradient);
    opacity: 0;
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition-normal);
    border-radius: 8px;
}

.nav-link .link-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80%;
    height: 80%;
    background: var(--glow-primary);
    filter: blur(20px);
    opacity: 0;
    transition: var(--transition-normal);
}

.nav-link:hover,
.nav-link.on {
    color: var(--text-primary);
}

.nav-link:hover .link-bg,
.nav-link.on .link-bg {
    opacity: 1;
    transform: scaleX(1);
}

.nav-link:hover .link-glow,
.nav-link.on .link-glow {
    opacity: 0.5;
}

/* 头部装饰 */
.header-decoration {
    display: flex;
    align-items: center;
    gap: 1rem;
    opacity: 0.5;
}

.deco-line {
    width: 100px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--text-muted), transparent);
}

.deco-dots {
    display: flex;
    gap: 6px;
}

.deco-dots i {
    width: 6px;
    height: 6px;
    background: var(--text-muted);
    border-radius: 50%;
    animation: dotPulse 2s ease-in-out infinite;
}

.deco-dots i:nth-child(2) { animation-delay: 0.3s; }
.deco-dots i:nth-child(3) { animation-delay: 0.6s; }

@keyframes dotPulse {
    0%, 100% { opacity: 0.3; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.2); }
}

/* ---------- 页面主体 ---------- */
.page-wrapper {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    perspective: var(--perspective);
}

.immersive-main {
    min-height: calc(100vh - 300px);
}

.content-grid {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 2.5rem;
    align-items: start;
}

/* ---------- 发光文字效果 ---------- */
.glow-text {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    text-shadow: 0 0 20px rgba(102, 126, 234, 0.5);
}

.glow-text .icon {
    color: #667eea;
    animation: iconGlow 2s ease-in-out infinite;
}

@keyframes iconGlow {
    0%, 100% { opacity: 0.5; text-shadow: 0 0 10px #667eea; }
    50% { opacity: 1; text-shadow: 0 0 20px #667eea, 0 0 30px #764ba2; }
}

.header-line {
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, #667eea, #764ba2, transparent);
    margin-top: 0.5rem;
}

/* ---------- 文章卡片 ---------- */
.posts-section {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.section-header {
    margin-bottom: 1rem;
}

.post-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    padding: 1.5rem 2rem;
    overflow: hidden;
    transition: var(--transition-normal);
    transform-style: var(--transform-style);
}

.card-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.1) 0%, transparent 60%);
    opacity: 0;
    transition: var(--transition-normal);
    pointer-events: none;
}

.post-card:hover {
    transform: translateY(-5px) rotateX(2deg);
    border-color: var(--border-glow);
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.3),
        0 0 40px rgba(102, 126, 234, 0.1);
}

.post-card:hover .card-glow {
    opacity: 1;
}

.post-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.post-date,
.post-views {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.date-icon,
.view-icon {
    color: #667eea;
}

.post-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    line-height: 1.4;
}

.title-link {
    color: var(--text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition-fast);
}

.title-glow {
    color: var(--text-primary);
    transition: var(--transition-normal);
}

.title-link:hover .title-glow {
    background: linear-gradient(90deg, #667eea, #764ba2, var(--text-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
}

.link-arrow {
    opacity: 0;
    transform: translateX(-10px);
    transition: var(--transition-fast);
    color: #667eea;
}

.title-link:hover .link-arrow {
    opacity: 1;
    transform: translateX(0);
}

.post-excerpt {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.post-excerpt p {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

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

.category-tag {
    padding: 0.3rem 1rem;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.2), rgba(118, 75, 162, 0.2));
    border: 1px solid rgba(102, 126, 234, 0.3);
    border-radius: 20px;
    font-size: 0.8rem;
    color: #667eea;
}

.read-more {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

.read-more:hover {
    color: #667eea;
}

.pulse-dot {
    width: 6px;
    height: 6px;
    background: #667eea;
    border-radius: 50%;
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.5); }
}

/* ---------- 分页 ---------- */
.pagination-container {
    margin-top: 2rem;
}

.pagebar {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem;
    border-radius: 12px;
}

.page-number {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass);
    transition: var(--transition-fast);
}

.page-number a {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.5rem 1rem;
}

.page-number:hover,
.page-number.active {
    background: var(--primary-gradient);
    border-color: transparent;
    box-shadow: 0 0 20px rgba(102, 126, 234, 0.4);
}

.page-number:hover a,
.page-number.active a {
    color: var(--text-primary);
}

/* ---------- 侧边栏 ---------- */
.sidebar-section {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.sidebar-widget {
    border-radius: 16px;
    overflow: hidden;
    position: relative;
    transition: var(--transition-normal);
}

.sidebar-widget:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), 0 0 30px rgba(102, 126, 234, 0.1);
}

.widget-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.08) 0%, transparent 60%);
    opacity: 0;
    transition: var(--transition-normal);
    pointer-events: none;
}

.sidebar-widget:hover .widget-glow {
    opacity: 1;
}

.widget-header {
    padding: 1.2rem 1.5rem;
    border-bottom: 1px solid var(--border-glass);
    position: relative;
}

.widget-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.widget-icon {
    color: #667eea;
    font-size: 0.8rem;
}

.widget-content {
    padding: 1rem 1.5rem;
}

/* 分类列表 */
.category-list {
    list-style: none;
}

.category-item {
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.category-link {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.8rem 0;
    color: var(--text-secondary);
    text-decoration: none;
    position: relative;
    transition: var(--transition-fast);
}

.link-bullet {
    color: #667eea;
    font-size: 0.7rem;
    transition: var(--transition-fast);
}

.link-text {
    flex: 1;
}

.link-shine {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.1), transparent);
    transition: var(--transition-normal);
}

.category-link:hover {
    color: var(--text-primary);
    padding-left: 0.5rem;
}

.category-link:hover .link-bullet {
    transform: translateX(5px);
}

.category-link:hover .link-shine {
    left: 100%;
}

/* 热门文章列表 */
.hot-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.hot-item {
    display: flex;
    align-items: flex-start;
    gap: 0.8rem;
}

.rank-number {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-muted);
    min-width: 24px;
    text-align: center;
    padding: 0.2rem 0;
}

.hot-item:nth-child(1) .rank-number {
    color: #ffd700;
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
}

.hot-item:nth-child(2) .rank-number {
    color: #c0c0c0;
    text-shadow: 0 0 10px rgba(192, 192, 192, 0.5);
}

.hot-item:nth-child(3) .rank-number {
    color: #cd7f32;
    text-shadow: 0 0 10px rgba(205, 127, 50, 0.5);
}

.hot-link {
    flex: 1;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: var(--transition-fast);
}

.hot-link:hover {
    color: #667eea;
}

/* 友情链接 */
.friend-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.friend-tag {
    padding: 0.4rem 0.8rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass);
    border-radius: 6px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.8rem;
    transition: var(--transition-fast);
}

.friend-tag:hover {
    background: rgba(102, 126, 234, 0.2);
    border-color: rgba(102, 126, 234, 0.5);
    color: var(--text-primary);
    transform: translateY(-2px);
}

/* ---------- 文章详情页 ---------- */
.article-detail {
    border-radius: 20px;
    padding: 2.5rem;
    position: relative;
    overflow: hidden;
}

.article-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 50% 0%, rgba(102, 126, 234, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.article-header {
    margin-bottom: 2rem;
    position: relative;
}

.article-meta-top {
    display: flex;
    gap: 2rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.article-date,
.article-views {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.article-title {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--text-primary) 0%, #a8b2ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.title-underline {
    width: 80px;
    height: 3px;
    background: var(--primary-gradient);
    border-radius: 3px;
    box-shadow: 0 0 20px rgba(102, 126, 234, 0.5);
}

/* 文章内容样式 */
.article-body {
    color: var(--text-secondary);
    line-height: 2;
    font-size: 1.05rem;
}

.article-body p {
    margin-bottom: 1.5rem;
}

.article-body h1,
.article-body h2,
.article-body h3,
.article-body h4,
.article-body h5,
.article-body h6 {
    color: var(--text-primary);
    margin: 2rem 0 1rem;
    font-weight: 600;
}

.article-body h2 {
    font-size: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-glass);
}

.article-body h3 {
    font-size: 1.3rem;
}

.article-body a {
    color: #667eea;
    text-decoration: none;
    border-bottom: 1px dashed rgba(102, 126, 234, 0.5);
    transition: var(--transition-fast);
}

.article-body a:hover {
    color: #764ba2;
    border-bottom-style: solid;
}

.article-body img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.article-body blockquote {
    margin: 1.5rem 0;
    padding: 1.5rem 2rem;
    background: rgba(102, 126, 234, 0.1);
    border-left: 4px solid #667eea;
    border-radius: 0 12px 12px 0;
    font-style: italic;
}

.article-body code {
    padding: 0.2rem 0.5rem;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 4px;
    font-family: 'Consolas', monospace;
    font-size: 0.9em;
    color: #00f2fe;
}

.article-body pre {
    padding: 1.5rem;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 12px;
    overflow-x: auto;
    margin: 1.5rem 0;
}

.article-body pre code {
    padding: 0;
    background: none;
}

.article-body ul,
.article-body ol {
    margin: 1.5rem 0;
    padding-left: 2rem;
}

.article-body li {
    margin-bottom: 0.5rem;
}

.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    border-radius: 12px;
    overflow: hidden;
}

.article-body th,
.article-body td {
    padding: 1rem;
    border: 1px solid var(--border-glass);
}

.article-body th {
    background: rgba(102, 126, 234, 0.2);
    color: var(--text-primary);
    font-weight: 600;
}

.article-body tr:nth-child(even) {
    background: rgba(255, 255, 255, 0.02);
}

/* 文章底部 */
.article-footer {
    margin-top: 3rem;
    padding-top: 2rem;
}

.footer-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-glass), transparent);
    margin-bottom: 1.5rem;
}

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

.action-tag {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1.2rem;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.2), rgba(118, 75, 162, 0.2));
    border: 1px solid rgba(102, 126, 234, 0.3);
    border-radius: 20px;
    font-size: 0.9rem;
    color: #667eea;
}

.action-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 1.5rem;
    background: var(--primary-gradient);
    border-radius: 10px;
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    overflow: hidden;
    transition: var(--transition-fast);
}

.btn-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80%;
    height: 80%;
    background: var(--glow-primary);
    filter: blur(20px);
    opacity: 0;
    transition: var(--transition-normal);
}

.action-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
}

.action-btn:hover .btn-glow {
    opacity: 0.6;
}

/* ---------- 评论区域 ---------- */
.comment-section {
    margin-top: 2rem;
    border-radius: 20px;
    padding: 2rem;
    position: relative;
}

.section-glow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 0%, rgba(102, 126, 234, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

.comment-header {
    margin-bottom: 1.5rem;
}

.comment-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.2rem;
    font-weight: 600;
}

.title-icon {
    font-size: 1.1rem;
}

.comment-tip {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.comment-tip a {
    color: var(--text-secondary);
    text-decoration: none;
}

.cancel-btn {
    float: right;
    color: #667eea !important;
    transition: var(--transition-fast);
}

.cancel-btn:hover {
    color: #764ba2 !important;
}

.comment-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.textarea-wrapper {
    position: relative;
}

.comment-textarea {
    width: 100%;
    min-height: 120px;
    padding: 1rem;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-glass);
    border-radius: 12px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    resize: vertical;
    transition: var(--transition-fast);
}

.comment-textarea::placeholder {
    color: var(--text-muted);
}

.comment-textarea:focus {
    outline: none;
    border-color: rgba(102, 126, 234, 0.5);
    box-shadow: 0 0 20px rgba(102, 126, 234, 0.1);
}

.textarea-glow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 12px;
    box-shadow: 0 0 30px rgba(102, 126, 234, 0);
    transition: var(--transition-normal);
    pointer-events: none;
}

.comment-textarea:focus ~ .textarea-glow {
    box-shadow: 0 0 30px rgba(102, 126, 234, 0.1);
}

.form-actions {
    display: flex;
    justify-content: flex-end;
}

.submit-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 2rem;
    background: var(--primary-gradient);
    border: none;
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: var(--transition-fast);
}

.btn-icon {
    transition: var(--transition-fast);
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
}

.submit-btn:hover .btn-icon {
    transform: translateX(5px);
}

/* ---------- 底部 ---------- */
.main-footer {
    margin-top: 4rem;
    padding: 2rem 0;
    position: relative;
}

.footer-glow {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.5), transparent);
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

.footer-top-line {
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-glass), transparent);
    margin-bottom: 2rem;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    text-align: center;
}

.copyright-text {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.copy-icon {
    color: #667eea;
}

.divider {
    margin: 0 0.5rem;
    opacity: 0.5;
}

.beian-info {
    font-size: 0.85rem;
}

.beian-link {
    color: var(--text-muted);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.3rem;
    transition: var(--transition-fast);
}

.beian-link:hover {
    color: #667eea;
}

.beian-icon {
    color: #667eea;
}

.footer-links {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.footer-link {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

.footer-link:hover {
    color: #667eea;
}

.link-divider {
    color: var(--text-muted);
}

.footer-bottom-glow {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 100px;
    background: radial-gradient(ellipse, rgba(102, 126, 234, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

/* ---------- 悬浮按钮 ---------- */
.floating-actions {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 999;
}

.float-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 1px solid var(--border-glass);
    background: var(--bg-glass);
    backdrop-filter: blur(10px);
    color: var(--text-secondary);
    font-size: 1.2rem;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80%;
    height: 80%;
    background: var(--glow-primary);
    filter: blur(15px);
    opacity: 0;
    transition: var(--transition-normal);
}

.float-btn:hover {
    color: var(--text-primary);
    transform: translateY(-3px);
    border-color: rgba(102, 126, 234, 0.5);
}

.float-btn:hover .btn-glow {
    opacity: 0.5;
}

.float-btn.hidden {
    opacity: 0;
    pointer-events: none;
    transform: translateY(20px);
}

/* ---------- 响应式设计 ---------- */
@media (max-width: 1024px) {
    .content-grid {
        grid-template-columns: 1fr;
    }
    
    .sidebar-section {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 1.5rem;
    }
}

@media (max-width: 768px) {
    .header-container {
        padding: 0 1rem;
    }
    
    .site-logo {
        font-size: 1.8rem;
    }
    
    .nav-list {
        gap: 0.3rem;
    }
    
    .nav-link {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }
    
    .page-wrapper {
        padding: 0 1rem;
    }
    
    .post-card {
        padding: 1.2rem;
    }
    
    .post-title {
        font-size: 1.1rem;
    }
    
    .article-detail {
        padding: 1.5rem;
    }
    
    .article-title {
        font-size: 1.4rem;
    }
    
    .article-meta-top {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .floating-actions {
        bottom: 1rem;
        right: 1rem;
    }
}

@media (max-width: 480px) {
    .site-logo {
        font-size: 1.5rem;
    }
    
    .nav-list {
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
    }
    
    .nav-link {
        width: 100%;
        text-align: center;
    }
    
    .glow-text {
        font-size: 1.2rem;
    }
    
    .post-footer-bar {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
    
    .article-actions {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
}

/* ---------- 3D粒子容器 ---------- */
#particles-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
}

/* ---------- 滚动条美化 ---------- */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, #667eea, #764ba2);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, #764ba2, #667eea);
}

/* ---------- 选择文本颜色 ---------- */
::selection {
    background: rgba(102, 126, 234, 0.3);
    color: var(--text-primary);
}