.site-header {
        background: linear-gradient(135deg, rgba(0, 20, 40, 0.95), rgba(0, 10, 30, 0.9));
        border-bottom: 2px solid #00ffff;
        position: sticky;
        top: 0;
        z-index: 1000;
        box-shadow: 
            0 0 30px rgba(0, 255, 255, 0.3),
            inset 0 0 30px rgba(0, 255, 255, 0.1);
    }

    .site-header::before {
        content: '';
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
        background: linear-gradient(90deg, transparent, rgba(0, 255, 255, 0.3), transparent);
        animation: headerScan 6s infinite;
    }

    @keyframes headerScan {
        0% { left: -100%; }
        100% { left: 100%; }
    }

    .site-header::after {
        content: '';
        position: absolute;
        bottom: -2px;
        left: 0;
        width: 100%;
        height: 2px;
        background: linear-gradient(90deg, transparent, #00ffff, transparent);
        animation: headerGlow 3s infinite;
    }

    @keyframes headerGlow {
        0%, 100% { opacity: 0.5; }
        50% { opacity: 1; }
    }

    .header-container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 0 24px;
        height: 72px;
        max-width: 1200px;
        margin: 0 auto;
        position: relative;
        z-index: 2;
    }

    .site-logo {
        display: flex;
        align-items: center;
        text-decoration: none;
        color: #00ffff;
        font-size: 22px;
        font-weight: 600;
        letter-spacing: 1px;
        text-shadow: 0 0 15px #00ffff;
        transition: all 0.3s ease;
    }

    .site-logo:hover {
        color: #00ffff;
        text-shadow: 0 0 25px #00ffff;
        transform: scale(1.05);
    }

    .site-logo i {
        margin-right: 10px;
        color: #00ffff;
        font-size: 26px;
        text-shadow: 0 0 20px #00ffff;
        animation: logoPulse 3s infinite;
    }

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

    .header-nav {
        display: flex;
        align-items: center;
        gap: 40px;
        position: relative;
    }

    .nav-item {
        color: #a0a0a0;
        text-decoration: none;
        font-size: 15px;
        font-weight: 400;
        padding: 12px 16px;
        transition: all 0.3s ease;
        position: relative;
        border-radius: 20px;
        border: 1px solid transparent;
        overflow: hidden;
    }

    .nav-item::before {
        content: '';
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
        background: linear-gradient(90deg, transparent, rgba(0, 255, 255, 0.2), transparent);
        transition: left 0.5s ease;
    }

    .nav-item:hover::before {
        left: 100%;
    }

    .nav-item:hover {
        color: #00ffff;
        border-color: rgba(0, 255, 255, 0.5);
        background: rgba(0, 255, 255, 0.1);
        text-shadow: 0 0 10px #00ffff;
        box-shadow: 0 0 15px rgba(0, 255, 255, 0.3);
        transform: translateY(-2px);
    }

    .nav-item.active {
        color: #00ffff;
        font-weight: 500;
        border: 1px solid #00ffff;
        background: rgba(0, 255, 255, 0.15);
        text-shadow: 0 0 15px #00ffff;
        box-shadow: 0 0 20px rgba(0, 255, 255, 0.4);
    }

    .nav-item.active::after {
        content: '';
        position: absolute;
        bottom: -1px;
        left: 0;
        right: 0;
        height: 2px;
        background: linear-gradient(90deg, transparent, #00ffff, transparent);
        animation: activeGlow 2s infinite;
    }

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

    .mobile-menu-btn {
        display: none;
        background: rgba(0, 255, 255, 0.1);
        border: 2px solid rgba(0, 255, 255, 0.5);
        border-radius: 8px;
        font-size: 22px;
        color: #00ffff;
        cursor: pointer;
        padding: 8px 12px;
        transition: all 0.3s ease;
        text-shadow: 0 0 10px #00ffff;
        position: relative;
        overflow: hidden;
    }

    .mobile-menu-btn::before {
        content: '';
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
        background: linear-gradient(90deg, transparent, rgba(0, 255, 255, 0.3), transparent);
        transition: left 0.5s ease;
    }

    .mobile-menu-btn:hover::before {
        left: 100%;
    }

    .mobile-menu-btn:hover {
        color: #00ffff;
        border-color: #00ffff;
        background: rgba(0, 255, 255, 0.2);
        box-shadow: 0 0 20px rgba(0, 255, 255, 0.5);
        transform: scale(1.1);
    }

    .mobile-nav {
        display: none;
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: linear-gradient(135deg, rgba(0, 20, 40, 0.95), rgba(0, 10, 30, 0.9));
        border-bottom: 2px solid #00ffff;
        z-index: 999;
        box-shadow: 
            0 0 30px rgba(0, 255, 255, 0.3),
            inset 0 0 30px rgba(0, 255, 255, 0.1);
        overflow: hidden;
    }

    .mobile-nav::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: 
            linear-gradient(rgba(0, 255, 255, 0.05) 1px, transparent 1px),
            linear-gradient(90deg, rgba(0, 255, 255, 0.05) 1px, transparent 1px);
        background-size: 20px 20px;
        animation: gridMove 10s linear infinite;
    }

    @keyframes gridMove {
        0% { transform: translate(0, 0); }
        100% { transform: translate(20px, 20px); }
    }

    .mobile-nav.show {
        display: block;
        animation: slideDown 0.3s ease;
    }

    @keyframes slideDown {
        from { 
            opacity: 0;
            transform: translateY(-20px);
        }
        to { 
            opacity: 1;
            transform: translateY(0);
        }
    }

    .mobile-nav-list {
        padding: 16px 0;
        position: relative;
        z-index: 2;
    }

    .mobile-nav-item {
        display: flex;
        align-items: center;
        padding: 16px 24px;
        color: #a0a0a0;
        text-decoration: none;
        font-size: 15px;
        transition: all 0.3s ease;
        position: relative;
        overflow: hidden;
        border-left: 3px solid transparent;
    }

    .mobile-nav-item::before {
        content: '';
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
        background: linear-gradient(90deg, transparent, rgba(0, 255, 255, 0.2), transparent);
        transition: left 0.5s ease;
    }

    .mobile-nav-item:hover::before,
    .mobile-nav-item.active::before {
        left: 100%;
    }

    .mobile-nav-item:hover,
    .mobile-nav-item.active {
        background: rgba(0, 255, 255, 0.1);
        color: #00ffff;
        border-left-color: #00ffff;
        text-shadow: 0 0 10px #00ffff;
        box-shadow: inset 0 0 20px rgba(0, 255, 255, 0.1);
    }

    .mobile-nav-item i {
        margin-right: 12px;
        font-size: 18px;
        color: #00ffff;
        text-shadow: 0 0 10px #00ffff;
        transition: all 0.3s ease;
    }

    .mobile-nav-item:hover i,
    .mobile-nav-item.active i {
        transform: scale(1.2);
        text-shadow: 0 0 15px #00ffff;
    }

    @media (max-width: 768px) {
        .header-container {
            padding: 0 20px;
            height: 64px;
        }

        .header-nav {
            display: none;
        }

        .mobile-menu-btn {
            display: block;
        }

        .site-logo {
            font-size: 20px;
        }

        .site-logo i {
            font-size: 24px;
            margin-right: 8px;
        }

        .mobile-nav {
            top: 64px;
        }
    }

    body {
        background: linear-gradient(135deg, #0a0e27 0%, #1a1a2e 50%, #16213e 100%);
        color: #ffffff;
        min-height: 100vh;
    }
    @media (hover: none) and (pointer: coarse) {
    .mobile-menu-btn,
    .mobile-nav-item {
        transition: none !important;
        animation: none !important;
    }

    .mobile-menu-btn::before,
    .mobile-nav-item::before {
        display: none !important;
    }

    .mobile-menu-btn:hover,
    .mobile-nav-item:hover {
        transform: none !important;
        box-shadow: none !important;
    }
}








   html,
    body {
        height: 100%;
        margin: 0;
        padding: 0;
    }

    body {
        display: flex;
        flex-direction: column;
        min-height: 100vh;
    }

    .main-content {
        flex: 1;
    }

    .nexus-links-zone {
        background: linear-gradient(135deg, rgba(0, 20, 40, 0.95), rgba(0, 10, 30, 0.9));
        border-top: 2px solid #00ffff;
        padding: 40px 0;
        position: relative;
        backdrop-filter: blur(15px);
    }

    .nexus-links-zone::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background:
            linear-gradient(rgba(0, 255, 255, 0.05) 1px, transparent 1px),
            linear-gradient(90deg, rgba(0, 255, 255, 0.05) 1px, transparent 1px);
        background-size: 30px 30px;
        animation: gridDrift 15s linear infinite;
        pointer-events: none;
    }

    @keyframes gridDrift {
        0% {
            transform: translate(0, 0);
        }

        100% {
            transform: translate(30px, 30px);
        }
    }

    .nexus-links-zone::after {
        content: '';
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
        background: linear-gradient(90deg, transparent, rgba(0, 255, 255, 0.3), transparent);
        animation: zoneScan 8s infinite;
    }

    @keyframes zoneScan {
        0% {
            left: -100%;
        }

        100% {
            left: 100%;
        }
    }

    .links-matrix-container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 20px;
        position: relative;
        z-index: 2;
    }

    .matrix-header {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 15px;
        margin-bottom: 30px;
        padding: 20px 25px;
        background: linear-gradient(135deg, rgba(0, 255, 255, 0.15), rgba(0, 255, 255, 0.05));
        border: 2px solid #00ffff;
        border-radius: 12px;
        backdrop-filter: blur(10px);
        position: relative;
    }

    .matrix-header::before {
        content: '';
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
        background: linear-gradient(90deg, transparent, rgba(0, 255, 255, 0.2), transparent);
        animation: headerScan 6s infinite;
    }

    @keyframes headerScan {
        0% {
            left: -100%;
        }

        100% {
            left: 100%;
        }
    }

    .matrix-signal {
        width: 12px;
        height: 12px;
        border-radius: 50%;
        background: radial-gradient(circle, #00ff00, #00cc00);
        box-shadow: 0 0 20px #00ff00;
        animation: signalPulse 1.5s infinite;
        position: relative;
        z-index: 2;
    }

    .matrix-signal::after {
        content: '';
        position: absolute;
        top: 50%;
        left: 50%;
        width: 6px;
        height: 6px;
        border-radius: 50%;
        background: #ffffff;
        transform: translate(-50%, -50%);
    }

    @keyframes signalPulse {

        0%,
        100% {
            opacity: 1;
        }

        50% {
            opacity: 0.3;
        }
    }

    .matrix-title2 {
        font-size: 18px;
        font-weight: bold;
        color: #00ffff;
        text-shadow: 0 0 15px #00ffff;
        letter-spacing: 2px;
        position: relative;
        z-index: 2;
    }

    .links-network {
        display: flex;
        justify-content: center;
        align-items: center;
        gap: 20px;
        flex-wrap: wrap;
    }

    .network-node {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        color: #ffffff;
        text-decoration: none;
        font-size: 14px;
        font-weight: 500;
        padding: 12px 20px;
        background: linear-gradient(135deg, rgba(0, 20, 40, 0.8), rgba(0, 10, 30, 0.6));
        border: 2px solid rgba(0, 255, 255, 0.3);
        border-radius: 25px;
        transition: all 0.4s ease;
        position: relative;
        min-width: 120px;
        backdrop-filter: blur(10px);
        text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
    }

    .network-node::before {
        content: '';
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
        background: linear-gradient(90deg, transparent, rgba(0, 255, 255, 0.4), transparent);
        transition: left 0.6s ease;
    }

    .network-node:hover {
        color: #00ffff;
        border-color: #00ffff;
        background: linear-gradient(135deg, rgba(0, 255, 255, 0.2), rgba(0, 255, 255, 0.1));
        transform: translateY(-3px) scale(1.05);
        box-shadow: 0 10px 30px rgba(0, 255, 255, 0.4);
        text-shadow: 0 0 15px #00ffff;
    }

    .network-node:hover::before {
        left: 100%;
    }

    .cyber-divider {
        border: none;
        height: 2px;
        background: linear-gradient(to right, transparent, #00ffff, transparent);
        margin: 0;
        width: 100%;
        position: relative;
        overflow: hidden;
    }

    .cyber-divider::before {
        content: '';
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
        background: linear-gradient(90deg, transparent, rgba(0, 255, 255, 0.8), transparent);
        animation: dividerFlow 3s infinite;
    }

    @keyframes dividerFlow {
        0% {
            left: -100%;
        }

        100% {
            left: 100%;
        }
    }

    .nexus-footer {
        background: linear-gradient(135deg, rgba(0, 15, 35, 0.95), rgba(0, 5, 25, 0.9));
        margin-top: auto;
        backdrop-filter: blur(20px);
        border-top: 2px solid #00ffff;
        position: relative;
    }

    .nexus-footer::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background:
            linear-gradient(rgba(0, 255, 255, 0.03) 1px, transparent 1px),
            linear-gradient(90deg, rgba(0, 255, 255, 0.03) 1px, transparent 1px);
        background-size: 40px 40px;
        animation: footerGrid 20s linear infinite;
        pointer-events: none;
    }

    @keyframes footerGrid {
        0% {
            transform: translate(0, 0);
        }

        100% {
            transform: translate(40px, 40px);
        }
    }

    .footer-matrix {
        max-width: 1200px;
        margin: 0 auto;
        padding: 35px 20px;
        position: relative;
        z-index: 2;
    }

    .footer-core {
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 40px;
        padding: 25px 30px;
        background: linear-gradient(135deg, rgba(0, 20, 40, 0.6), rgba(0, 10, 30, 0.4));
        border: 2px solid rgba(0, 255, 255, 0.3);
        border-radius: 15px;
        backdrop-filter: blur(15px);
        position: relative;
    }

    .footer-core::before {
        content: '';
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
        background: linear-gradient(90deg, transparent, rgba(0, 255, 255, 0.2), transparent);
        animation: coreScan 10s infinite;
    }

    @keyframes coreScan {
        0% {
            left: -100%;
        }

        100% {
            left: 100%;
        }
    }

    .footer-identity {
        display: flex;
        align-items: center;
        flex-shrink: 0;
        gap: 25px;
        position: relative;
        z-index: 2;
    }

    .identity-logo {
        display: flex;
        align-items: center;
        color: #00ffff;
        font-size: 20px;
        font-weight: bold;
        text-decoration: none;
        transition: all 0.3s ease;
        text-shadow: 0 0 15px #00ffff;
        letter-spacing: 1px;
    }

    .identity-logo:hover {
        color: #00ffff;
        transform: scale(1.05);
        text-shadow: 0 0 25px #00ffff;
    }

    .identity-logo i {
        margin-right: 10px;
        color: #00ffff;
        font-size: 24px;
        text-shadow: 0 0 20px #00ffff;
        animation: logoGlow 3s infinite;
    }

    @keyframes logoGlow {

        0%,
        100% {
            opacity: 1;
        }

        50% {
            opacity: 0.7;
        }
    }

    .identity-desc {
        color: rgba(255, 255, 255, 0.8);
        font-size: 14px;
        line-height: 1.6;
        max-width: 350px;
        position: relative;
        z-index: 2;
    }

    .footer-data {
        display: flex;
        align-items: center;
        gap: 25px;
        color: rgba(255, 255, 255, 0.8);
        font-size: 13px;
        flex-shrink: 0;
        text-align: right;
        position: relative;
        z-index: 2;
    }

    .footer-data a {
        color: rgba(255, 255, 255, 0.8);
        text-decoration: none;
        transition: all 0.3s ease;
        padding: 6px 12px;
        border-radius: 8px;
        border: 1px solid transparent;
        position: relative;
    }

    .footer-data a::before {
        content: '';
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
        background: linear-gradient(90deg, transparent, rgba(0, 255, 255, 0.3), transparent);
        transition: left 0.5s ease;
    }

    .footer-data a:hover {
        color: #00ffff;
        background: rgba(0, 255, 255, 0.1);
        border-color: rgba(0, 255, 255, 0.3);
        text-shadow: 0 0 10px #00ffff;
    }

    .footer-data a:hover::before {
        left: 100%;
    }

    .footer-data i {
        color: #00ffff;
        margin-right: 6px;
        text-shadow: 0 0 10px #00ffff;
    }

    /* ========== 低性能模式优化 ========== */
    .low-performance .nexus-links-zone::before,
    .low-performance .nexus-links-zone::after,
    .low-performance .matrix-header::before,
    .low-performance .nexus-footer::before,
    .low-performance .footer-core::before,
    .low-performance .cyber-divider::before,
    .low-performance .network-node::before,
    .low-performance .footer-data a::before,
    .low-performance .cyber-grid,
    .low-performance .neon-particles,
    .low-performance .hero-terminal::before,
    .low-performance .terminal-header::after,
    .low-performance .packet-beam,
    .low-performance .tab-scanner,
    .low-performance .node-beam,
    .low-performance .article-terminal::before,
    .low-performance .btn-beam,
    .low-performance .nav-beam,
    .low-performance .related-beam,
    .low-performance .hot-beam,
    .low-performance .share-beam,
    .low-performance .cyber-terminal::before,
    .low-performance .content-terminal::before,
    .low-performance .profile-matrix::before,
    .low-performance .metric-node::before,
    .low-performance .info-node::before,
    .low-performance .tool-node::before,
    .low-performance .advantage-node::before,
    .low-performance .recommendation-node::before {
        display: none !important;
    }

    .low-performance .matrix-signal,
    .low-performance .terminal-dot::after,
    .low-performance .section-signal,
    .low-performance .stream-signal,
    .low-performance .node-pulse,
    .low-performance .void-lines span,
    .low-performance .terminal-dot {
        animation: none !important;
    }

    .low-performance .matrix-signal::after,
    .low-performance .section-signal::after,
    .low-performance .terminal-dot::after,
    .low-performance .stream-signal::after {
        display: none !important;
    }

    .low-performance .identity-logo i {
        animation: none !important;
    }

    .low-performance .glitch::before,
    .low-performance .glitch::after {
        display: none !important;
    }

    .low-performance .typing-text {
        animation: none !important;
        border-right: none !important;
        white-space: normal !important;
    }

    .low-performance .cursor {
        display: none !important;
    }

    .low-performance .data-packet.scanning {
        animation: none !important;
    }

    .low-performance .metric-node .node-value {
        animation: none !important;
    }

    @media (max-width: 768px) {
        .nexus-links-zone {
            padding: 30px 0;
        }

        .links-matrix-container {
            padding: 0 16px;
        }

        .matrix-title2 {
            font-size: 16px;
            letter-spacing: 1px;
        }

        .matrix-header {
            padding: 15px 20px;
            margin-bottom: 25px;
        }

        .links-network {
            gap: 15px;
        }

        .network-node {
            font-size: 13px;
            padding: 10px 16px;
            min-width: 100px;
        }

        .footer-matrix {
            padding: 25px 16px;
        }

        .footer-core {
            flex-direction: column;
            gap: 25px;
            text-align: center;
            padding: 20px;
        }

        .footer-identity {
            flex-direction: column;
            gap: 15px;
            text-align: center;
        }

        .identity-desc {
            max-width: none;
            text-align: center;
        }

        .footer-data {
            gap: 20px;
            justify-content: center;
            text-align: center;
            flex-wrap: wrap;
        }

        .identity-logo {
            font-size: 18px;
        }

        .identity-logo i {
            font-size: 22px;
        }
    }

    @media (max-width: 480px) {
        .nexus-links-zone {
            padding: 25px 0;
        }

        .links-network {
            gap: 12px;
        }

        .network-node {
            font-size: 12px;
            padding: 8px 14px;
            min-width: 90px;
        }

        .footer-core {
            padding: 15px;
            gap: 20px;
        }

        .footer-data {
            flex-direction: column;
            gap: 15px;
        }

        .identity-desc {
            font-size: 13px;
        }

        .matrix-header {
            padding: 12px 16px;
        }

        .matrix-title2 {
            font-size: 15px;
        }
    }
    
    .link-item{
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    padding: 12px 20px;
    background: rgba(0, 255, 255, 0.15);
    border: 1px solid rgba(0, 255, 255, 0.05);
    border-radius: 25px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    min-width: 120px;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}