.practice-header {
            background: linear-gradient(120deg, #3498db, #1abc9c);
            padding: 0.8rem 5%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            box-shadow: 0 4px 16px rgba(0,0,0,0.08);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .practice-logo {
            display: flex;
            align-items: center;
            color: white;
            text-decoration: none;
            font-size: 1.3rem;
            font-weight: 700;
            gap: 0.7rem;
            transition: all 0.2s;
        }
        .practice-logo i {
            font-size: 1.7rem;
            color: #ecf0f1;
        }
        .practice-logo:hover {
            opacity: 0.85;
            text-decoration: underline;
        }
        .practice-main {
            max-width: 1200px;
            margin: 2.5rem auto 0 auto;
            padding: 0 1.5rem;
        }
        .practice-title {
            font-size: 2rem;
            font-weight: bold;
            color: #3498db;
            margin-bottom: 2.5rem;
            text-align: center;
            letter-spacing: 2px;
        }
        .practice-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2.2rem;
        }
        .practice-card {
            background: #fff;
            border-radius: 16px;
            box-shadow: 0 4px 16px rgba(52,152,219,0.08);
            padding: 2.2rem 1.2rem 1.5rem 1.2rem;
            text-align: center;
            transition: all 0.2s;
            cursor: pointer;
            position: relative;
            min-height: 180px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }
        .practice-card:hover {
            box-shadow: 0 8px 24px rgba(52,152,219,0.18);
            transform: translateY(-6px) scale(1.03);
        }
        .practice-card i {
            font-size: 2.5rem;
            color: #1abc9c;
            margin-bottom: 1.2rem;
        }
        .practice-card .card-title {
            font-size: 1.25rem;
            font-weight: 600;
            color: #2980b9;
            margin-bottom: 0.7rem;
        }
        .practice-card .card-desc {
            color: #888;
            font-size: 0.98rem;
        }
        @media (max-width: 900px) {
            .practice-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 600px) {
            .practice-grid { grid-template-columns: 1fr; }
            .practice-main { padding: 0 0.5rem; }
        }