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

        body {
            background-color: #1a1a1a;
            color: #d9d9d9;
            font-family: "Times New Roman", Times, Georgia, serif;
            min-height: 100vh;
            overflow-x: hidden;
            position: relative;
        }

        .container-greeter {
            position: relative;
            z-index: 1;
            display: flex;
            justify-content: flex-start;
            align-items: center;
            padding: 3rem 2rem 2rem 2rem;
            width: 100%;
        }

        /* Horizontal Japanese title */
        .title-greeter {
            font-family: 'Noto Sans JP', sans-serif;
            font-weight: 900;
            font-size: 3.5rem;
            color: #ffffff;
            letter-spacing: 0.3rem;
            line-height: 1;
            display: flex;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .title-greeter span {
            text-shadow: 
                0 0 3px #ffffff,
                0 0 6px rgba(255, 255, 255, 0.5);
            position: relative;
        }

        /* Glitch effect with screen tearing */
        .title-greeter {
            animation: glitch 3s infinite;
            position: relative;
        }

        .title-greeter::before,
        .title-greeter::after {
            content: 'シリコンオンライン';
            position: absolute;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            opacity: 0;
        }

        .title-greeter::before {
            animation: glitchTop 3s infinite;
            clip-path: polygon(0 0, 100% 0, 100% 33%, 0 33%);
            text-shadow: -2px 0 #ff0040;
        }

        .title-greeter::after {
            animation: glitchBottom 3s infinite;
            clip-path: polygon(0 67%, 100% 67%, 100% 100%, 0 100%);
            text-shadow: 2px 0 #00ffff;
        }

        @keyframes glitch {
            0%, 90%, 100% {
                transform: translate(0);
            }
            91% {
                transform: translate(-3px, 0);
            }
            92% {
                transform: translate(4px, 0);
            }
            93% {
                transform: translate(-2px, 0);
            }
            94% {
                transform: translate(0);
            }
        }

        @keyframes glitchTop {
            0%, 90%, 94%, 100% {
                opacity: 0;
                transform: translate(0);
            }
            91% {
                opacity: 1;
                transform: translate(-8px, -2px);
            }
            92% {
                opacity: 1;
                transform: translate(12px, 1px);
            }
            93% {
                opacity: 1;
                transform: translate(-5px, -1px);
            }
        }

        @keyframes glitchBottom {
            0%, 90%, 94%, 100% {
                opacity: 0;
                transform: translate(0);
            }
            91% {
                opacity: 1;
                transform: translate(10px, 3px);
            }
            92% {
                opacity: 1;
                transform: translate(-7px, -2px);
            }
            93% {
                opacity: 1;
                transform: translate(6px, 2px);
            }
        }

        /* Individual character flickering with varied intensity */
        .title-greeter span:nth-child(2) {
            animation: flicker1 5s infinite;
        }

        .title-greeter span:nth-child(4) {
            animation: flicker2 6s infinite;
        }

        .title-greeter span:nth-child(6) {
            animation: flicker3 7s infinite;
        }

        @keyframes flicker1 {
            0%, 45%, 47%, 100% {
                opacity: 1;
            }
            45.5% {
                opacity: 0.4;
            }
            46% {
                opacity: 0;
            }
            46.5% {
                opacity: 0.6;
            }
            48% {
                opacity: 0.2;
            }
        }

        @keyframes flicker2 {
            0%, 62%, 64%, 66%, 100% {
                opacity: 1;
            }
            62.3% {
                opacity: 0.3;
            }
            63% {
                opacity: 0;
            }
            63.5% {
                opacity: 0.5;
            }
            65% {
                opacity: 0.1;
            }
            65.5% {
                opacity: 0.7;
            }
        }

        @keyframes flicker3 {
            0%, 28%, 32%, 100% {
                opacity: 1;
            }
            28.4% {
                opacity: 0.5;
            }
            29% {
                opacity: 0;
            }
            29.5% {
                opacity: 0.3;
            }
            31% {
                opacity: 0.8;
            }
            31.5% {
                opacity: 0.2;
            }
        }

        /* Navbar */
        .navbar {
            display: flex;
            justify-content: flex-start;
            gap: 2rem;
            padding: 1.5rem 2rem;
            background-color: rgba(26, 26, 26, 0.9);
            position: sticky;
            top: 0;
            z-index: 10;
            backdrop-filter: blur(10px);
        }

        .nav-link {
            color: #d9d9d9;
            text-decoration: none;
            text-transform: uppercase;
            letter-spacing: 0.15rem;
            font-size: 0.9rem;
            padding: 0.5rem 1rem;
            transition: all 0.3s ease;
        }

        .nav-link:hover {
            color: #ffffff;
        }

        .nav-link.active {
            color: #ffffff;
            border-bottom: 2px solid #fdfdfd;
        }

        /* Main Content */
        .content {
            max-width: 1200px;
            margin: 0;
            padding: 3rem 2rem;
        }

        .content-section {
            border-radius: 8px;
            margin-bottom: 2rem;
        }

        .content-section h2 {
            color: #ffffff;
            font-size: 1.5rem;
            margin-bottom: 1rem;
            text-transform: uppercase;
            letter-spacing: 0.15rem;
        }

        .content-section p {
            line-height: 1.8;
            color: #d9d9d9;
            margin-bottom: 1rem;
        }

        .crypto-addy {
            background-color: rgba(0, 0, 0, 0.3);
            border: 1px solid #ffffff;
            padding: 1.5rem;
            border-radius: 8px;
            text-align: center;
            margin: 2rem 0;
        }

        .crypto-addy code {
            color: #fdfdfd;
            font-size: 1.1rem;
            word-break: break-all;
            font-family: 'Courier Prime', 'Courier New', monospace;
        }

        .project-item {
            border-radius: 8px;
            padding: 10px;
            margin-bottom: 1.5rem;
            transition: all 0.3s ease;
        }

        .project-item:hover {
            border-color: #ffffff;
            margin-right: 15px;
            background-color: rgba(255, 255, 255, 0.08);
            transform: translateX(10px);
        }

        .project-item h3 {
            color: #ffffff;
            word-break: break-word;
            font-size: 1.3rem;
            margin-bottom: 0.5rem;
            text-transform: uppercase;
            letter-spacing: 0.1rem;
        }

        .project-item p {
            color: #d9d9d9;
            line-height: 1.6;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(-10px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* Responsive layout */
        @media (max-width: 768px) {
            .container-greeter {
                padding: 2rem 1rem 1.5rem 1rem;
            }

            .title-greeter {
                font-size: 2.5rem;
                justify-content: center;
            }

            .navbar {
                gap: 1rem;
                padding: 1rem;
                flex-wrap: wrap;
            }

            .nav-link {
                font-size: 0.8rem;
                padding: 0.4rem 0.8rem;
            }

            .content {
                padding: 2rem 1rem;
            }
        }

        @media (max-width: 480px) {
            .title-greeter {
                font-size: 2rem;
                letter-spacing: 0.2rem;
            }

            .container-greeter {
                padding: 1.5rem 1rem 1rem 1rem;
            }

            .navbar {
                gap: 0.5rem;
            }

            .nav-link {
                font-size: 0.75rem;
                padding: 0.3rem 0.6rem;
                letter-spacing: 0.1rem;
            }

            .content-section {
                padding: 1.5rem;
            }
        }