:root {
            --primary-bg: #050505;
            --accent-blue: #4000ff;
            --accent-purple: #8050ff;
            --accent-cyan: #50c8ff;
            --accent-green: #00ff80;
            --text-main: #f0f0f0;
            --text-dim: #a0a0a0;
            --glass: rgba(255, 255, 255, 0.03);
            --border: rgba(255, 255, 255, 0.1);
        }

        * { box-sizing: border-box; }

        body {
            margin: 0;
            padding: 0;
            font-family: 'Inter', sans-serif;
            color: var(--text-main);
            background-color: var(--primary-bg);
            line-height: 1.6;
            overflow-x: hidden;
        }

        .bg-pattern {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
            background: 
                radial-gradient(circle at 20% 30%, rgba(64, 0, 255, 0.15) 0%, transparent 40%),
                radial-gradient(circle at 80% 70%, rgba(0, 255, 128, 0.1) 0%, transparent 40%);
            opacity: 0.6;
        }

        .container {
            max-width: 1000px;
            margin: 0 auto;
            padding: 0 20px;
        }

        header {
            height: 80vh;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            text-align: center;
        }

        h1 {
            font-size: clamp(3rem, 10vw, 5rem);
            margin: 0;
            font-weight: 800;
            letter-spacing: -2px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple), var(--accent-blue));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            filter: drop-shadow(0 0 30px rgba(80, 200, 255, 0.3));
        }

        .tagline {
            font-size: 1.2rem;
            color: var(--accent-green);
            margin-top: 15px;
            font-weight: 700;
            letter-spacing: 4px;
            text-transform: uppercase;
        }

        section {
            margin-bottom: 100px;
            opacity: 0;
            transform: translateY(30px);
            animation: reveal 0.8s forwards;
        }

        @keyframes reveal {
            to { opacity: 1; transform: translateY(0); }
        }

        h2 {
            font-size: 2rem;
            margin-bottom: 30px;
            display: flex;
            align-items: center;
            gap: 15px;
        }

        h2::after {
            content: "";
            height: 2px;
            flex-grow: 1;
            background: linear-gradient(90deg, var(--accent-green), transparent);
        }

        .glass-card {
            background: var(--glass);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid var(--border);
            border-radius: 24px;
            padding: 40px;
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }

        .glass-card:hover {
            border-color: var(--accent-cyan);
            background: rgba(255, 255, 255, 0.05);
            transform: scale(1.02);
        }

        .skill-container {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 20px;
        }

        .skill-tag {
            background: rgba(64, 0, 255, 0.1);
            padding: 8px 18px;
            border-radius: 12px;
            font-size: 0.9rem;
            border: 1px solid rgba(80, 200, 255, 0.3);
            color: var(--accent-cyan);
            font-weight: 600;
        }

        .project-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
        }

        .project-card {
            padding: 30px;
        }

        .project-card h3 { margin-top: 0; color: var(--accent-cyan); }

        .btn {
            display: inline-block;
            margin-top: 20px;
            padding: 12px 24px;
            background: var(--accent-blue);
            color: white;
            border-radius: 12px;
            font-weight: 700;
            text-decoration: none;
            transition: 0.3s;
        }

        .btn:hover {
            background: var(--accent-purple);
            box-shadow: 0 0 20px rgba(128, 80, 255, 0.5);
        }

        .interest-list {
            list-style: none;
            padding: 0;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 15px;
        }

        .interest-item strong { color: var(--accent-purple); display: block; font-size: 0.8rem; text-transform: uppercase; }
        
        /* Links専用の新しいスタイル */
        .link-flex-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }

        .link-card {
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 25px;
            text-decoration: none;
            display: flex;
            flex-direction: column;
            position: relative;
            transition: all 0.3s ease;
            overflow: hidden;
        }

        .link-card:hover {
            background: rgba(255, 255, 255, 0.06);
            border-color: var(--accent-blue);
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(64, 0, 255, 0.2);
        }

        .link-category {
            font-size: 0.7rem;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--text-dim);
            margin-bottom: 8px;
        }

        .link-title {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-main);
        }

        .link-arrow {
            position: absolute;
            right: 25px;
            bottom: 25px;
            font-size: 1.2rem;
            color: var(--accent-cyan);
            opacity: 0.5;
            transition: 0.3s;
        }

        .link-card:hover .link-arrow {
            opacity: 1;
            transform: translateX(5px);
        }

        /* 個別のアクセント（ホバー時に色が少し変わる） */
        .itch-border:hover { border-color: #ff2449; box-shadow: 0 10px 30px rgba(255, 36, 73, 0.15); }
        .oc-border:hover { border-color: var(--accent-cyan); box-shadow: 0 10px 30px rgba(80, 200, 255, 0.15); }
        
        footer {
            text-align: center;
            padding: 60px 20px;
            color: var(--text-dim);
            font-size: 0.9rem;
            border-top: 1px solid var(--border);
        }