:root {
        --accent: #5efcff;
        --card-bg: #111827;
        --bg: #050a15;
        --radius: 14px;

         /* Motion System */
        --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
        --ease-inout: cubic-bezier(0.165, 0.84, 0.44, 1);
        --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);

        --t-fast: 0.2s;
        --t-normal: 0.4s;
        --t-slow: 0.8s;
        }

        body {
            background-color: var(--bg);
            color: #fff;
            font-family: 'Outfit', -apple-system, BlinkMacSystemFont, 'Helvetica', 'Arial', sans-serif;
            font-display: swap;
            margin: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            text-rendering: optimizeLegibility;
            overflow-x: hidden;
        }

        .mono { font-family: 'JetBrains Mono', SFMono-Regular, Consolas, monospace; font-display: swap; }

        .header {
            text-align: center;
            padding: 60px 20px 10px;
        }

        .logo-wrapper {
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 40px;
            cursor: default;
        }

        .logo-part {
          font-size: clamp(34px, 8vw, 56px); 
          font-family: 'Outfit', 'Arial Black', 'Arial', sans-serif;
          font-weight: 900;
          font-display: swap;
          text-transform: uppercase;
          color: rgba(255, 255, 255, 0.95);
          letter-spacing: 0.15em;
          position: relative;
          will-change: transform;
         }

        .logo-dot {
            will-change: transform, opacity;
            backface-visibility: hidden;
            width: 14px;
            height: 14px;
            background-color: #5efcff;
            border-radius: 50%;
            box-shadow: 0 0 20px #5efcff;
            animation: pulse-dot 3s infinite ease-in-out;
            margin-top: 5px;
            margin-left: 9px;  
            margin-right: 16px; 
        }

        @keyframes pulse-dot {
    0%, 100% {
        transform: scale(1);
        opacity: 0.7;
        filter: blur(0px);
    }

    50% {
        transform: scale(1.6);
        opacity: 1;
        filter: blur(0.3px);
    }
}

        .logo-part::before {
    content: attr(data-text);
    position: absolute;
    inset: 0;
    color: #5efcff;
    opacity: 0.6;

    -webkit-mask-image: linear-gradient(
    0deg,
    transparent 40%,
    white 50%,
    transparent 60%
);
     will-change: transform;

mask-image: linear-gradient(
    0deg,
    transparent 40%,
    white 50%,
    transparent 60%
);

    animation: scan 3s ease-in-out infinite;
}

        @keyframes scan {
            0%, 100% { transform: translateY(-2px); opacity: 0.5; }
            50% { transform: translateY(2px); opacity: 1; }
        }

        .search-box {
            width: 100%;
            max-width: 768px;
            padding: 20px 25px;
            background: linear-gradient(145deg, rgba(5, 10, 21, 0.8), rgba(17, 24, 39, 0.4));
            border: 1px solid rgba(94, 252, 255, 0.2);
            border-radius: 50px;
            font-family: 'JetBrains Mono', monospace; 
            color: var(--accent); 
            font-size: 14px;
            letter-spacing: 1px;
            outline: none;
            transition: all var(--t-normal) var(--ease-inout);
            backdrop-filter: blur(10px);
            text-align: center;
            box-shadow: 0 0 0 0px rgba(94, 252, 255, 0);
        }
        
        .search-box::placeholder {
            color: rgba(94, 252, 255, 0.2); 
            text-transform: uppercase;
            font-weight: 300;
            letter-spacing: 1px; 
            font-family: 'JetBrains Mono', monospace; 
            transition: all var(--t-normal) var(--ease-inout);
        }

        .search-box::-webkit-input-placeholder {letter-spacing: 2px;}
        .search-box::-moz-placeholder {letter-spacing: 2px;}

        .search-box:focus {
            border-color: var(--accent);
            box-shadow: 0 0 30px rgba(94, 252, 255, 0.15), inset 0 0 10px rgba(94, 252, 255, 0.05);
            transform: translateY(-2px) scale(1.02); 
        }
        
        .search-box:focus::placeholder {
            opacity: 0.3; 
        }
        
        #no-result {
            letter-spacing: 1px;
        }

        .site-description {
            max-width: 768px;
            margin: -15px auto 44px; 
            font-size: 18px;
            line-height: 1.6;
            font-weight: 700;
            letter-spacing: 1px;
            font-style: italic;
            opacity: 0.9;
            background: linear-gradient(180deg, 
                rgba(255,255,255,0.8) 0%, 
                rgba(255,255,255,0.5) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            filter: drop-shadow(0 0 10px rgba(94, 252, 255, 0.1));
        }

        .section-title {
            grid-column: 1 / -1;
            font-size: 26px;
            font-weight: 700;
            color: rgba(255, 255, 255, 0.8);
            text-transform: uppercase;
            letter-spacing: 4px;
            margin-top: 40px;
            margin-bottom: 12px;
            text-align: center;
        }

        .section-desc {
            grid-column: 1 / -1;
            font-size: 14px;
            letter-spacing: 1px;
            background: linear-gradient(180deg, 
                rgba(255,255,255,0.6) 0%, 
                rgba(255,255,255,0.4) 60%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-align: center;
            margin: -20px auto 20px;
            max-width: 768px;
            margin-left: auto;
            margin-right: auto;
            text-transform: uppercase;
            padding-bottom: 24px;
            position: relative; 
        }

        .section-desc::after {
            content: "";
            position: absolute;
            left: 50%;
            bottom: 0;
            transform: translateX(-50%);
            width: 60%; 
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--accent), transparent);
            opacity: 0.3; 
            transition: all 0.6s cubic-bezier(0.23, 1, 0.32, 1);
        }

        .category:hover .section-desc::after,
        .section-desc:hover::after {
            width: 100%;
            opacity: 0.6;
        }
        
        .headline {
            font-weight: 600;
        }

        .domain-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 20px;
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 60px 20px 80px;
            perspective: 1000px;
        }

        .domain-card {
            text-decoration: none;
            background: var(--card-bg);
            border: 1px solid rgba(255, 255, 255, 0.08);
            height: 110px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
            border-radius: var(--radius); 
            transition: transform var(--t-normal) var(--ease-out),
            background-color var(--t-normal) var(--ease-out),
            border-color var(--t-normal) var(--ease-out);
            will-change: transform, background-color, border-color;
        }
        
        .domain-card::before {
    content: "";
    position: absolute;
    inset: -100px; /* 扩大范围，确保光晕边缘平滑 */
    /* 使用变量控制光晕位置，初始在中心 */
    background: radial-gradient(
        circle at var(--mouse-x, 50%) var(--mouse-y, 50%), 
        rgba(94, 252, 255, 0.15) 0%, /* 稍微调高一点亮度，因为是局部的 */
        transparent 60%
    );
    opacity: 0;
    transition: opacity var(--t-normal) var(--ease-inout);
    z-index: 1; /* 确保在文字下方 */
}

        .domain-card:hover {
        border-color: rgba(94, 252, 255, 0.6); /* 边框也相应变亮 */
    background-color: #1a2230; /* 比原来稍微暗一点，突出光晕 */
}
        
        .domain-card:hover::before {
    opacity: 1;
}

       @media (hover: none) {
    .domain-card:active {
        transform: scale(0.98);
    }
}

    .domain-card:hover .domain-name::after {
        width: 80%;
        opacity: 0.8;
    }

        .domain-name {
    font-size: 22px;
    font-weight: 600;
    letter-spacing: 1px;
    color: #fff;
    z-index: 2;
    margin-bottom: 12px; 
    position: relative; 
    z-index: 2;
    text-shadow: 0 0 10px rgba(94, 252, 255, 0.2);
}

.domain-name::after {
    content: "";
    position: absolute; 
    left: 50%; 
    bottom: -8px;
    transform: translateX(-50%); 
    width: 40px; 
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0.3;
    transition: all 0.4s ease;
}

.domain-card:hover .domain-name::after {
    width: 100px; 
    opacity: 0.8;
}

        .domain-tag {
            font-family: 'JetBrains Mono', monospace; 
            font-size: 14px; 
            letter-spacing: 0.5px;
            color: var(--accent);
            margin-top: 4px;
            opacity: 0.6;
        }

        .hidden { display: none !important; }

        footer {
            padding: 0 20px 80px;
            text-align: center;
        }
        
        .contact {
    padding: 60px 20px 40px;
}

.contact h2 {
    font-size: 28px;
    letter-spacing: 1px;
    font-weight: 600;
    background: linear-gradient(180deg, 
                rgba(255,255,255,0.8) 0%, 
                rgba(255,255,255,0.5) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            filter: drop-shadow(0 0 10px rgba(94, 252, 255, 0.1));
}

        .footer-link {
    display: inline-block;
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 1px;
    padding: 20px 50px;   /* 放大 */
    border-radius: 999px;
    color: #000;
    background: linear-gradient(135deg, #5efcff, #6fffe9);
    border: none;
    box-shadow: 0 15px 40px rgba(94, 252, 255, 0.05);
            transition: transform var(--t-fast) var(--ease-out), 
            box-shadow var(--t-fast) var(--ease-out),
            filter var(--t-fast);
}

.footer-link:active {
    transform: translateY(0) scale(0.96);
    filter: brightness(0.9);
}

        .footer-link:hover {
    transform: translateY(-3px) scale(1.04);
    box-shadow: 0 20px 50px rgba(94, 252, 255, 0.15);
}
        
        .footer-meta {
    margin: 40px 20px 10px;
    font-size: 12px;
    opacity: 0.35;   /* 大幅降低 */
    line-height: 1.8;
    letter-spacing: 1px;
    background: none;
    -webkit-text-fill-color: rgba(255,255,255,0.7);
    filter: none;
}

footer::before {
    content: "";
    display: block;
    width: 60%; /* 初始宽度减小，Hover时拉长更有张力 */
    height: 1px;
    margin: 0 auto 40px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        var(--accent) 50%, 
        transparent 100%);
    opacity: 0.3;
    transition: width var(--t-slow) var(--ease-smooth), opacity var(--t-normal);
}

footer:hover::before {
    width: 100%;
    opacity: 0.6;
}


        @media (max-width: 768px) {
            .section-title {
            font-size: 24px;
            letter-spacing: 2px; 
        }
            .header { padding: 45px 20px 10px; }
            .logo-part { font-size: 34px; letter-spacing: 4px; }
            .logo-dot { width: 9px; height: 9px; 
             margin: 2px 10px 0 6px;
            }
        }