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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(180deg, #f8fafc 0%, #eef2ff 100%);
            color: #1f2937;
        }

        .header {
            background: linear-gradient(135deg, #2563eb 0%, #64748b 100%);
            color: #fff;
            padding: 20px 24px;
            box-shadow: 0 8px 24px rgba(15, 23, 42, 0.18);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .header-inner {
            max-width: 1100px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 1.15rem;
            font-weight: 700;
        }

        .brand img {
            width: 44px;
            height: 44px;
            object-fit: contain;
        }

        .nav {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .nav a,
        .card-link {
            text-decoration: none;
        }

        .nav a {
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.28);
            padding: 10px 16px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.12);
        }

        main.container {
            max-width: 900px;
            margin: 40px auto;
            padding: 40px;
        }

        .hero {
            text-align: center;
            margin-bottom: 30px;
            background: none;
            color: #1f2937;
            padding: 0;
        }

        .hero h1 {
            font-size: clamp(2rem, 4vw, 3.3rem);
            margin-bottom: 12px;
        }

        .hero p {
            color: #475569;
            font-size: 1.05rem;
            line-height: 1.6;
        }

        .grid {
            display: grid;
            grid-template-columns: repeat(3, minmax(0, 1fr));
            gap: 20px;
            margin-top: 36px;
        }

        .card-link {
            display: block;
            padding: 26px 22px;
            border-radius: 22px;
            background: #fff;
            box-shadow: 0 18px 42px rgba(15, 23, 42, 0.08);
            border: 1px solid rgba(148, 163, 184, 0.22);
            color: #1f2937;
            transition: transform 0.2s ease, box-shadow 0.2s ease;
            min-height: 220px;
        }

        .card-link:hover {
            transform: translateY(-4px);
            box-shadow: 0 22px 48px rgba(15, 23, 42, 0.12);
        }

        .icon {
            width: 54px;
            height: 54px;
            border-radius: 16px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            font-size: 1.35rem;
            color: #fff;
        }

        .icon.phone { background: linear-gradient(135deg, #2563eb, #3b82f6); }
        .icon.whatsapp { background: linear-gradient(135deg, #16a34a, #22c55e); }
        .icon.email { background: linear-gradient(135deg, #0f172a, #475569); }

        .card-link h2 {
            font-size: 1.3rem;
            margin-bottom: 10px;
        }

        .value {
            display: block;
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .desc {
            color: #64748b;
            line-height: 1.55;
        }

        @media (max-width: 768px) {
            .header-inner {
                flex-direction: column;
                gap: 15px;
                align-items: stretch;
            }

            .brand {
                justify-content: center;
                text-align: center;
            }

            .nav {
                flex-direction: column;
                width: 100%;
                gap: 10px;
            }

            .nav a {
                width: 100%;
                text-align: center;
            }

            .grid {
                grid-template-columns: 1fr;
            }
        }