/* ===== 全局变量与重置 ===== */
:root {
    --primary: #00ff88;
    --primary-dark: #00cc6a;
    --primary-glow: rgba(0, 255, 136, 0.6);
    --secondary: #39ff14;
    --secondary-dark: #2ecc71;
    --accent: #00ff88;
    --neon-green: #39ff14;
    --neon-cyan: #00fff7;
    --bg-dark: #0a0f0d;
    --bg-card: #0d1a14;
    --bg-card-hover: #112e20;
    --text: #d0f0e0;
    --text-light: #6b9a7e;
    --text-bright: #ffffff;
    --border: #1a3a2a;
    --gradient-1: linear-gradient(135deg, #00ff88, #39ff14);
    --gradient-2: linear-gradient(135deg, #00fff7, #00ff88);
    --gradient-neon: linear-gradient(135deg, #00ff88, #00fff7, #39ff14);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    --radius: 12px;
    --radius-lg: 20px;
    --glow: 0 0 20px rgba(0, 255, 136, 0.4), 0 0 60px rgba(0, 255, 136, 0.15);
    --glow-strong: 0 0 30px rgba(0, 255, 136, 0.6), 0 0 80px rgba(0, 255, 136, 0.25);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: var(--bg-dark);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    color: var(--neon-cyan);
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: var(--neon-green);
    text-shadow: 0 0 8px var(--primary-glow);
}

img {
    max-width: 100%;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== 导航栏 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 15, 13, 0.92);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 0 20px;
    box-shadow: 0 2px 30px rgba(0, 255, 136, 0.08);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.3rem;
    font-weight: bold;
    color: var(--text-bright) !important;
}

.logo-icon {
    font-size: 1.8rem;
    animation: pulse 2s infinite;
    filter: drop-shadow(0 0 8px var(--primary-glow));
}

@keyframes pulse {
    0%, 100% { transform: scale(1); filter: drop-shadow(0 0 8px var(--primary-glow)); }
    50% { transform: scale(1.15); filter: drop-shadow(0 0 16px var(--primary-glow)); }
}

.logo-text {
    background: var(--gradient-neon);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 10px rgba(0, 255, 136, 0.5));
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    color: var(--text-light);
    font-weight: 500;
    padding: 8px 0;
    position: relative;
    transition: color 0.3s;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--text-bright);
    text-shadow: 0 0 10px var(--primary-glow);
}

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-neon);
    border-radius: 1px;
    box-shadow: 0 0 10px var(--primary-glow);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-bright);
    font-size: 1.8rem;
    cursor: pointer;
    filter: drop-shadow(0 0 6px var(--primary-glow));
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(10, 15, 13, 0.98);
    backdrop-filter: blur(20px);
    padding: 20px;
    z-index: 999;
    flex-direction: column;
    gap: 15px;
    border-bottom: 1px solid var(--border);
}

.mobile-menu.active {
    display: flex;
}

.mobile-menu a {
    color: var(--text-light);
    padding: 12px 16px;
    border-radius: 8px;
    transition: all 0.3s;
}

.mobile-menu a:hover {
    background: var(--bg-card);
    color: var(--neon-green);
    text-shadow: 0 0 8px var(--primary-glow);
}

/* ===== Hero区域 ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    padding-top: 64px;
}

/* Canvas 声波背景 */
#waveCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(0, 255, 136, 0.12) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 50%, rgba(0, 255, 247, 0.12) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(57, 255, 20, 0.08) 0%, transparent 50%);
    animation: bgPulse 8s ease-in-out infinite;
    z-index: 0;
}

@keyframes bgPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.hero-content {
    position: relative;
    z-index: 2;
    padding: 40px 20px;
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 900;
    margin-bottom: 20px;
    letter-spacing: 2px;
}

.glitch {
    position: relative;
    background: var(--gradient-neon);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: glitchAnim 3s infinite;
    filter: drop-shadow(0 0 15px rgba(0, 255, 136, 0.6));
}

.glitch::before,
.glitch::after {
    content: attr(data-text);
    position: absolute;
    left: 0;
    right: 0;
    background: var(--gradient-neon);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 8px rgba(0, 255, 247, 0.5));
}

.glitch::before {
    animation: glitchTop 0.3s infinite;
    clip-path: polygon(0 0, 100% 0, 100% 45%, 0 45%);
}

.glitch::after {
    animation: glitchBottom 0.3s infinite;
    clip-path: polygon(0 60%, 100% 60%, 100% 100%, 0 100%);
}

@keyframes glitchTop {
    0% { transform: translate(-3px, -3px); }
    50% { transform: translate(3px, 0); }
    100% { transform: translate(-1px, 1px); }
}

@keyframes glitchBottom {
    0% { transform: translate(3px, 3px); }
    50% { transform: translate(-3px, 0); }
    100% { transform: translate(1px, -1px); }
}

.hero-subtitle {
    font-size: clamp(1rem, 3vw, 1.5rem);
    color: var(--neon-cyan);
    margin-bottom: 15px;
    font-weight: 600;
    text-shadow: 0 0 18px rgba(0, 255, 247, 0.5);
}

.hero-desc {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-btns {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-neon);
    color: #0a0f0d !important;
    box-shadow: 0 4px 20px rgba(0, 255, 136, 0.4);
    font-weight: 700;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--glow-strong);
}

.btn-outline {
    border: 2px solid var(--neon-green);
    color: var(--neon-green) !important;
    background: transparent;
    text-shadow: 0 0 8px rgba(57, 255, 20, 0.4);
}

.btn-outline:hover {
    background: var(--neon-green);
    color: #0a0f0d !important;
    transform: translateY(-3px);
    box-shadow: var(--glow);
}

/* ===== 波浪分隔 ===== */
.wave-divider {
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    z-index: 3;
}

.wave-divider svg {
    display: block;
    width: 100%;
    height: 80px;
}

/* ===== Section通用 ===== */
.section {
    padding: 80px 20px;
}

.section-dark {
    background: var(--bg-card);
}

.section-title {
    font-size: 2rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 50px;
    color: var(--text-bright);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    text-shadow: 0 0 12px rgba(0, 255, 136, 0.3);
}

.title-icon {
    font-size: 1.8rem;
    filter: drop-shadow(0 0 8px var(--primary-glow));
}

/* ===== 轮播 Banner ===== */
.banner-section {
    padding: 30px 20px 0;
    max-width: 1200px;
    margin: 80px auto 0;
}

.banner-wrapper {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--glow);
    border: 1px solid var(--border);
}

.banner-slides {
    position: relative;
    width: 100%;
    height: 340px;
    overflow: hidden;
}

.banner-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.8s ease;
    padding: 40px;
    text-align: center;
}

.banner-slide.active {
    opacity: 1;
    z-index: 2;
}

.banner-slide h2 {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 900;
    color: #fff;
    margin-bottom: 15px;
    text-shadow: 0 0 20px rgba(0,0,0,0.5);
}

.banner-slide p {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.85);
    margin-bottom: 20px;
}

.banner-slide .btn {
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(10px);
    color: #fff !important;
    border: 1px solid rgba(255,255,255,0.3);
}

.banner-slide .btn:hover {
    background: rgba(255,255,255,0.3);
    transform: translateY(-2px);
}

.banner-dots {
    position: absolute;
    bottom: 15px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
    gap: 10px;
    z-index: 5;
}

.banner-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255,255,255,0.4);
    cursor: pointer;
    transition: all 0.3s;
    border: 1px solid rgba(255,255,255,0.3);
}

.banner-dot.active {
    background: var(--neon-green);
    box-shadow: 0 0 12px var(--primary-glow);
    transform: scale(1.2);
}

.banner-prev,
.banner-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 5;
    background: rgba(0,0,0,0.4);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    color: #fff;
    font-size: 1.5rem;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.banner-prev { left: 15px; }
.banner-next { right: 15px; }

.banner-prev:hover,
.banner-next:hover {
    background: rgba(0, 255, 136, 0.3);
    border-color: var(--neon-green);
    box-shadow: 0 0 15px var(--primary-glow);
}

/* ===== 文章卡片网格 ===== */
.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.post-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    cursor: pointer;
    position: relative;
}

.post-card:hover {
    transform: translateY(-12px) scale(1.02);
    border-color: var(--primary);
    box-shadow: 0 20px 50px rgba(0, 255, 136, 0.2), 0 0 40px rgba(0, 255, 136, 0.1);
}

.post-cover {
    width: 100%;
    height: 260px;
    background: var(--gradient-neon);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    position: relative;
    overflow: hidden;
}

.post-cover::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(transparent 40%, rgba(10, 15, 13, 0.85));
}

.post-cover::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0, 255, 136, 0.1) 0%, transparent 60%);
    animation: coverShine 4s ease-in-out infinite;
    z-index: 1;
}

@keyframes coverShine {
    0%, 100% { transform: translate(-20%, -20%); }
    50% { transform: translate(20%, 20%); }
}

.post-category {
    position: absolute;
    top: 15px;
    left: 15px;
    background: rgba(10, 15, 13, 0.7);
    backdrop-filter: blur(10px);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--neon-green);
    font-weight: 600;
    z-index: 2;
    border: 1px solid rgba(0, 255, 136, 0.3);
    text-shadow: 0 0 8px rgba(0, 255, 136, 0.5);
}

.post-body {
    padding: 24px;
}

.post-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-bright);
    margin-bottom: 10px;
    line-height: 1.4;
}

.post-excerpt {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

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

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

.post-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--gradient-2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    color: #0a0f0d;
    font-weight: 700;
}

.load-more {
    text-align: center;
}

/* ===== 分类卡片 ===== */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 20px;
}

.category-card {
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 30px 20px;
    text-align: center;
    transition: all 0.3s;
    color: var(--text) !important;
}

.category-card:hover {
    border-color: var(--neon-green);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 255, 136, 0.12);
    text-shadow: 0 0 8px rgba(0, 255, 136, 0.3);
}

.cat-icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
    filter: drop-shadow(0 0 8px var(--primary-glow));
}

.category-card h3 {
    color: var(--text-bright);
    margin-bottom: 8px;
    font-size: 1.1rem;
}

.category-card p {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* ===== 热门排行 ===== */
.hot-list {
    max-width: 800px;
    margin: 0 auto;
}

.hot-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px;
    background: var(--bg-card);
    border-radius: var(--radius);
    margin-bottom: 15px;
    border: 1px solid var(--border);
    transition: all 0.3s;
    cursor: pointer;
}

.hot-item:hover {
    border-color: var(--primary);
    transform: translateX(5px);
    box-shadow: 0 0 20px rgba(0, 255, 136, 0.1);
}

.hot-rank {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.hot-rank.top1 { background: linear-gradient(135deg, #ffd700, #ffaa00); color: #000; box-shadow: 0 0 15px rgba(255, 215, 0, 0.4); }
.hot-rank.top2 { background: linear-gradient(135deg, #c0c0c0, #a0a0a0); color: #000; }
.hot-rank.top3 { background: linear-gradient(135deg, #cd7f32, #a0522d); color: #fff; }
.hot-rank.normal { background: var(--border); color: var(--text-light); }

.hot-info {
    flex: 1;
}

.hot-title {
    font-weight: 700;
    color: var(--text-bright);
    margin-bottom: 5px;
}

.hot-meta {
    font-size: 0.85rem;
    color: var(--text-light);
    display: flex;
    gap: 15px;
}

.hot-views {
    color: var(--neon-green);
    font-weight: 600;
    text-shadow: 0 0 6px rgba(57, 255, 20, 0.4);
}

/* ===== 关于我们 ===== */
.about-content {
    max-width: 1000px;
    margin: 0 auto;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: start;
}

.about-text p {
    margin-bottom: 15px;
    font-size: 1.05rem;
    line-height: 1.8;
}

.about-text h3 {
    color: var(--text-bright);
    margin: 25px 0 15px;
    font-size: 1.3rem;
}

.about-text ul {
    list-style: none;
    padding: 0;
}

.about-text li {
    padding: 8px 0;
    font-size: 1rem;
    border-bottom: 1px solid var(--border);
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.stat-card {
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 30px 20px;
    text-align: center;
    transition: all 0.3s;
}

.stat-card:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
    box-shadow: 0 0 25px rgba(0, 255, 136, 0.15);
}

.stat-num {
    font-size: 2.5rem;
    font-weight: 900;
    background: var(--gradient-neon);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 8px rgba(0, 255, 136, 0.4));
}

.stat-label {
    color: var(--text-light);
    margin-top: 8px;
    font-size: 0.95rem;
}

/* ===== 联系/投稿 ===== */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info h3 {
    color: var(--text-bright);
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.contact-info > p {
    color: var(--text-light);
    margin-bottom: 30px;
}

.contact-items {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    padding: 20px;
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.contact-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
    filter: drop-shadow(0 0 6px var(--primary-glow));
}

.contact-item strong {
    color: var(--text-bright);
    display: block;
    margin-bottom: 5px;
}

.contact-item p {
    color: var(--neon-cyan);
    margin: 0;
}

.contact-form {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 40px;
}

.contact-form h3 {
    color: var(--text-bright);
    margin-bottom: 25px;
    font-size: 1.3rem;
}

.form-group {
    margin-bottom: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text-bright);
    font-size: 1rem;
    transition: border-color 0.3s;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 15px var(--primary-glow);
}

.form-group textarea {
    resize: vertical;
}

/* ===== 留言墙 ===== */
.section-wall {
    background: var(--bg-dark);
    padding: 80px 20px;
}

.wall-container {
    max-width: 1000px;
    margin: 0 auto;
}

.wall-form {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 30px;
    margin-bottom: 40px;
    box-shadow: 0 0 30px rgba(0, 255, 136, 0.08);
}

.wall-form h3 {
    color: var(--text-bright);
    margin-bottom: 20px;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.wall-form-row {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
}

.wall-form-row input {
    flex: 1;
    padding: 12px 16px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text-bright);
    font-size: 0.95rem;
    font-family: inherit;
    transition: border-color 0.3s;
}

.wall-form-row input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 12px var(--primary-glow);
}

.wall-form textarea {
    width: 100%;
    padding: 14px 16px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text-bright);
    font-size: 0.95rem;
    font-family: inherit;
    resize: vertical;
    min-height: 80px;
    transition: border-color 0.3s;
    margin-bottom: 15px;
}

.wall-form textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 12px var(--primary-glow);
}

.wall-form button {
    background: var(--gradient-neon);
    color: #0a0f0d;
    border: none;
    padding: 12px 30px;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
}

.wall-form button:hover {
    transform: translateY(-2px);
    box-shadow: var(--glow-strong);
}

.wall-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.wall-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.wall-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-neon);
}

.wall-card:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 255, 136, 0.1);
}

.wall-card-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.wall-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--gradient-2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    font-weight: 700;
    color: #0a0f0d;
}

.wall-name {
    font-weight: 700;
    color: var(--text-bright);
    font-size: 0.95rem;
}

.wall-time {
    font-size: 0.8rem;
    color: var(--text-light);
}

.wall-message {
    color: var(--text);
    font-size: 0.95rem;
    line-height: 1.6;
}

.wall-empty {
    text-align: center;
    padding: 40px;
    color: var(--text-light);
    font-size: 1rem;
    grid-column: 1 / -1;
}

.wall-empty span {
    font-size: 2rem;
    display: block;
    margin-bottom: 10px;
}

/* ===== 页脚 ===== */
.footer {
    background: #050510;
    border-top: 1px solid var(--border);
    padding: 60px 20px 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 50px;
    margin-bottom: 40px;
}

.footer-brand p {
    color: var(--text-light);
    margin-top: 15px;
}

.footer-links h4 {
    color: var(--text-bright);
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.footer-links a {
    display: block;
    color: var(--text-light);
    padding: 6px 0;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--neon-green);
    text-shadow: 0 0 8px var(--primary-glow);
}

.footer-bottom {
    border-top: 1px solid var(--border);
    padding-top: 25px;
    text-align: center;
}

.footer-bottom p {
    color: var(--text-light);
    font-size: 0.9rem;
}

.footer-icp {
    margin-top: 8px;
    font-size: 0.8rem !important;
    color: var(--text-light) !important;
    opacity: 0.6;
}

/* ===== 回到顶部 ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gradient-neon);
    color: #0a0f0d;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(0, 255, 136, 0.4);
    transition: all 0.3s;
    opacity: 0;
    visibility: hidden;
    z-index: 100;
    font-weight: 900;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--glow-strong);
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
    .nav-links { display: none; }
    .mobile-menu-btn { display: block; }
    .mobile-menu { display: none; }
    .mobile-menu.active { display: flex; }

    .posts-grid {
        grid-template-columns: 1fr;
    }

    .about-grid,
    .contact-content,
    .wall-form-row {
        grid-template-columns: 1fr;
        flex-direction: column;
        gap: 15px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero-btns {
        flex-direction: column;
        align-items: center;
    }

    .about-stats {
        grid-template-columns: 1fr 1fr;
    }

    .banner-slides {
        height: 260px;
    }

    .wall-form-row {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .categories-grid {
        grid-template-columns: 1fr;
    }

    .hot-item {
        flex-direction: column;
        text-align: center;
    }

    .hot-meta {
        justify-content: center;
    }

    .banner-slides {
        height: 220px;
    }
}