:root {
            --primary: #00ff9c;
            --secondary: #00d9ff;
            --dark: #07111f;
            --dark-2: #0b1728;
            --card: #0d1b2d;
            --border: rgba(255,255,255,.09);
            --text: #e8f0f7;
            --muted: #9aacbd;
        }

        body {
            background: var(--dark);
            color: var(--text);
            font-family: system-ui, -apple-system, BlinkMacSystemFont,
                         "Segoe UI", sans-serif;
        }

        a {
            text-decoration: none;
        }

        /* HERO */
        .hero {
            position: relative;
            overflow: hidden;
            padding: 110px 20px 100px;
            background:
                radial-gradient(circle at 20% 20%, rgba(0,255,156,.10), transparent 30%),
                radial-gradient(circle at 80% 30%, rgba(0,217,255,.09), transparent 30%),
                linear-gradient(135deg, #07111f, #091a2d);
            border-bottom: 1px solid var(--border);
        }

        .hero-grid {
            position: absolute;
            inset: 0;
            opacity: .12;
            background-image:
                linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px);
            background-size: 40px 40px;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
        }

        .badge-lab {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 14px;
            border: 1px solid rgba(0,255,156,.25);
            border-radius: 50px;
            background: rgba(0,255,156,.06);
            color: var(--primary);
            font-size: .85rem;
            font-weight: 600;
            margin-bottom: 22px;
        }

        .hero h1 {
            font-size: clamp(2.5rem, 6vw, 5rem);
            font-weight: 800;
            line-height: 1.05;
            letter-spacing: -2px;
        }

        .hero h1 span {
            color: var(--primary);
        }

        .hero-text {
            max-width: 760px;
            margin: 25px auto 35px;
            color: var(--muted);
            font-size: 1.1rem;
            line-height: 1.8;
        }

        .btn-primary-custom {
            background: var(--primary);
            color: #04110c;
            border: none;
            font-weight: 700;
            padding: 13px 23px;
            border-radius: 8px;
        }

        .btn-primary-custom:hover {
            background: #55ffbd;
            color: #04110c;
        }

        .btn-outline-custom {
            border: 1px solid rgba(255,255,255,.18);
            color: var(--text);
            padding: 12px 22px;
            border-radius: 8px;
        }

        .btn-outline-custom:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        /* SECTIONS */

        .section-title {
            font-size: 2rem;
            font-weight: 750;
            margin-bottom: 10px;
        }

        .section-subtitle {
            color: var(--muted);
            max-width: 700px;
            margin-bottom: 45px;
        }

        /* CATEGORY CARDS */
        .category-card {
            height: 100%;
            padding: 28px;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: 14px;
            transition: .25s ease;
        }

        .category-card:hover {
            transform: translateY(-5px);
            border-color: rgba(0,255,156,.35);
            box-shadow: 0 15px 45px rgba(0,0,0,.25);
        }

        .category-icon {
            width: 52px;
            height: 52px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            background: rgba(0,255,156,.08);
            color: var(--primary);
            font-size: 1.35rem;
            margin-bottom: 20px;
        }

        .category-card h3 {
            font-size: 1.15rem;
            margin-bottom: 10px;
        }

        .category-card p {
            color: var(--muted);
            font-size: .93rem;
            line-height: 1.7;
            margin-bottom: 18px;
        }

        .category-link {
            color: var(--primary);
            font-size: .9rem;
            font-weight: 650;
        }

        /* TOOL CARDS */
        .tool-card, .device-card {
            height: 100%;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 25px;
            transition: .25s ease;
        }

        .tool-card:hover, .device-card:hover {
            transform: translateY(-5px);
            border-color: rgba(0,217,255,.35);
        }

        .tool-icon, .device-icon {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(0,217,255,.08);
            color: var(--secondary);
            font-size: 1.2rem;
            margin-bottom: 18px;
        }

        .tool-card h3, .device-card h3 {
            font-size: 1.15rem;
            margin-bottom: 10px;
        }

        .tool-card p, .device-card p {
            color: var(--muted);
            font-size: .9rem;
            line-height: 1.65;
            min-height: 72px;
        }

        .tool-card .btn, .device-card .btn {
            margin-top: 8px;
            font-size: .85rem;
        }

        /* INFO BOX */
        .info-box {
            padding: 30px;
            border-radius: 15px;
            background: linear-gradient(
                135deg,
                rgba(0,255,156,.06),
                rgba(0,217,255,.04)
            );
            border: 1px solid rgba(0,255,156,.14);
        }

        .info-box i {
            color: var(--primary);
            font-size: 1.6rem;
            margin-bottom: 15px;
        }

        .info-box h3 {
            font-size: 1.25rem;
        }

        .info-box p {
            color: var(--muted);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* CTA */
        .cta {
            padding: 90px 20px;
            background: #081526;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .cta-box {
            max-width: 850px;
            margin: auto;
            text-align: center;
        }

        .cta h2 {
            font-size: clamp(2rem, 4vw, 3rem);
            font-weight: 800;
        }

        .cta p {
            color: var(--muted);
            line-height: 1.8;
            margin: 20px auto 30px;
            max-width: 680px;
        }

        /* FOOTER */
        footer {
            padding: 35px 20px;
            background: #050d18;
            color: var(--muted);
        }

        footer a {
            color: var(--muted);
        }

        footer a:hover {
            color: var(--primary);
        }

        .footer-brand {
            color: var(--text);
            font-weight: 700;
        }

        /* RESPONSIVE */
        @media (max-width: 767px) {

            .hero {
                padding: 80px 20px;
            }

            .section {
                padding: 65px 20px;
            }

            .hero h1 {
                letter-spacing: -1px;
            }

            .hero-text {
                font-size: 1rem;
            }

            .tool-card p {
                min-height: auto;
            }
        }