:root {
            --nav-accent: #00FFFF;
            --nav-glow: rgba(0,255,255,0.4);
            --nav-brand: #C45FFF;
            --nav-brand-glow: rgba(196,95,255,0.7);
        }

        /* ── CYAN TERMINAL PALETTE ── */
        body {
            --cyan: #00FFFF;
            --cyan-dim: #007A7A;
            --cyan-glow: rgba(0,255,255,0.4);
            --cyan-bright: #7DF9FF;
            background: #040c0c;
            background-image: repeating-linear-gradient(
                0deg, transparent, transparent 2px,
                rgba(0,255,255,0.03) 2px, rgba(0,255,255,0.03) 4px
            );
        }

        footer {
            border-top-color: var(--cyan-dim);
        }
        footer span {
            color: var(--cyan);
        }

        .breadcrumb {
            font-family: 'Press Start 2P', monospace;
            font-size: 7px;
            color: var(--cyan-dim);
            letter-spacing: 0.1em;
            margin-top: -8px;
            margin-bottom: 16px;
            align-self: flex-start;
        }
        .breadcrumb a { color: var(--cyan-dim); text-decoration: none; transition: color 0.15s; }
        .breadcrumb a:hover { color: var(--cyan); }
        .breadcrumb .sep { margin: 0 8px; color: var(--cyan); opacity: 0.7; }
        .breadcrumb .current { color: var(--cyan); }

        main {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            padding: 80px 20px 60px;
        }

        /* ── TERMINAL PROMPT ── */
        .terminal-prompt {
            font-family: 'Press Start 2P', monospace;
            font-size: 10px;
            color: var(--cyan);
            margin-bottom: 8px;
            animation: fadeUp 0.5s ease both;
        }
        .terminal-prompt .cursor {
            animation: blink-cyan 1s step-end infinite;
        }

        .page-title {
            font-family: 'Press Start 2P', monospace;
            font-size: 18px;
            color: var(--cyan);
            text-shadow:
                0 0 10px rgba(0,255,255,0.6),
                0 0 30px rgba(0,255,255,0.3),
                0 0 60px rgba(0,255,255,0.1);
            margin-bottom: 10px;
            letter-spacing: 0.1em;
            animation: fadeUp 0.5s 0.05s ease both;
        }

        .page-subtitle {
            font-family: 'Courier Prime', monospace;
            font-size: 12px;
            color: var(--cyan-dim);
            letter-spacing: 0.05em;
            margin-bottom: 48px;
            animation: fadeUp 0.5s 0.1s ease both;
        }

        @keyframes blink-cyan {
            0%, 100% { opacity: 1; }
            50% { opacity: 0; }
        }

        /* ── TOOL CARDS ── */
        .tool-cards {
            display: flex;
            flex-direction: column;
            gap: 0;
            width: min(520px, 90vw);
            animation: fadeUp 0.5s 0.15s ease both;
        }

        .tool-card {
            display: flex;
            align-items: stretch;
            text-decoration: none;
            border: 2px solid var(--cyan-dim);
            border-bottom: none;
            background: rgba(0,255,255,0.02);
            transition: background 0.15s, border-color 0.15s, box-shadow 0.15s;
            position: relative;
            overflow: hidden;
        }
        .tool-card:last-child {
            border-bottom: 2px solid var(--cyan-dim);
        }

        .tool-card::before {
            content: '';
            display: block;
            width: 4px;
            flex-shrink: 0;
            background: var(--cyan);
            transition: width 0.15s;
        }

        .tool-card:hover {
            background: rgba(0,255,255,0.05);
            border-color: var(--cyan);
            box-shadow: 0 0 20px rgba(0,255,255,0.15),
                        inset 0 0 40px rgba(0,255,255,0.02);
        }
        .tool-card:hover::before { width: 7px; }
        .tool-card:hover .tc-arrow { opacity: 1; transform: translateX(0); }

        .tc-inner {
            padding: 20px 22px;
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .tc-label {
            font-family: 'Press Start 2P', monospace;
            font-size: 9px;
            color: var(--cyan);
            letter-spacing: 0.08em;
            margin-bottom: 7px;
            display: block;
            text-shadow: 0 0 8px rgba(0,255,255,0.4);
        }

        .tc-desc {
            font-family: 'Courier Prime', monospace;
            font-size: 12px;
            color: var(--cyan-dim);
            line-height: 1.5;
        }

        .tc-arrow {
            font-family: 'Press Start 2P', monospace;
            font-size: 10px;
            color: var(--cyan);
            opacity: 0;
            transform: translateX(-6px);
            transition: opacity 0.15s, transform 0.15s;
            flex-shrink: 0;
            text-shadow: 0 0 8px rgba(0,255,255,0.6);
        }

        /* ── CATEGORY GRID (ware root) ── */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            width: min(560px, 90vw);
            animation: fadeUp 0.5s 0.15s ease both;
        }

        .category-card {
            display: flex;
            align-items: stretch;
            text-decoration: none;
            border: 2px solid var(--cyan-dim);
            background: rgba(0,255,255,0.02);
            transition: background 0.15s, border-color 0.15s, box-shadow 0.15s, transform 0.15s;
            position: relative;
            overflow: hidden;
        }

        .category-card::before {
            content: '';
            display: block;
            width: 4px;
            flex-shrink: 0;
            background: var(--cyan);
            transition: width 0.15s;
        }

        .category-card:hover {
            background: rgba(0,255,255,0.05);
            border-color: var(--cyan);
            box-shadow: 0 0 24px rgba(0,255,255,0.2),
                        inset 0 0 40px rgba(0,255,255,0.02);
            transform: translateY(-3px);
        }
        .category-card:hover::before { width: 7px; }
        .category-card:hover .cc-arrow { opacity: 1; transform: translateX(0); }

        .cc-inner {
            padding: 24px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .cc-label {
            font-family: 'Press Start 2P', monospace;
            font-size: 10px;
            color: var(--cyan);
            letter-spacing: 0.08em;
            text-shadow: 0 0 8px rgba(0,255,255,0.4);
        }

        .cc-desc {
            font-family: 'Courier Prime', monospace;
            font-size: 12px;
            color: var(--cyan-dim);
            line-height: 1.5;
        }

        .cc-arrow {
            font-family: 'Press Start 2P', monospace;
            font-size: 10px;
            color: var(--cyan);
            opacity: 0;
            transform: translateX(-6px);
            transition: opacity 0.15s, transform 0.15s;
            text-shadow: 0 0 8px rgba(0,255,255,0.6);
            margin-top: auto;
            align-self: flex-start;
        }

        @media (max-width: 640px) {
            .page-title { font-size: 13px; }
            .tc-label { font-size: 8px; }
            .category-grid { grid-template-columns: 1fr; }
        }