/* ── Section wrapper ───────────────────────────────────────── */
    .exp-section {
        padding: 100px 0;
        background: #ffffff;
    }

    .exp-container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 32px;
    }

    /* ── Header ────────────────────────────────────────────────── */
    .exp-header {
        margin-bottom: 72px;
    }

    .exp-title {
        font-size: 2.5rem;
        font-weight: 400;
        color: var(--text-primary);
        margin: 0 0 16px;
        line-height: 1.2;
        display: inline-block;
    }

    .exp-subtitle {
        font-size: 17px;
        color: var(--text-secondary);
        max-width: 580px;
        line-height: 1.65;
        margin: 0;
    }

    /* ── Body ──────────────────────────────────────────────────── */
    .exp-body {
        display: flex;
        flex-direction: column;
    }

    /* ── Gradient divider between categories ───────────────────── */
    .exp-divider {
        height: 1px;
        background: linear-gradient(90deg,
                rgba(13, 159, 232, .3) 0%,
                rgba(237, 131, 33, .2) 50%,
                transparent 100%);
        margin: 0;
    }

    /* ── Category block ────────────────────────────────────────── */
    .exp-category {
        display: grid;
        grid-template-columns: 220px 1fr;
        gap: 0 48px;
        padding: 56px 0;
        opacity: 0;
        transform: translateY(24px);
        transition: opacity .5s ease, transform .5s ease;
    }

    .exp-category.exp-visible {
        opacity: 1;
        transform: translateY(0);
    }

    /* ── Left — sticky label ───────────────────────────────────── */
    .exp-cat-label {
        position: sticky;
        top: 100px;
        align-self: start;
        padding-top: 4px;
    }

    .exp-cat-num {
        display: block;
        font-size: 11px;
        font-weight: 700;
        letter-spacing: 2px;
        text-transform: uppercase;
        margin-bottom: 10px;
        font-family: 'IBM Plex Mono', monospace;
        opacity: .7;
        transition: opacity .3s ease;
    }

    /* Alternate number colour */
    .exp-category:nth-child(1) .exp-cat-num,
    .exp-category:nth-child(5) .exp-cat-num {
        color: #0d9fe8;
    }

    .exp-category:nth-child(3) .exp-cat-num {
        color: #ed8321;
    }

    .exp-category:nth-child(5) .exp-cat-num {
        color: #0d9fe8;
    }

    .exp-cat-title {
        font-size: 1.45rem;
        font-weight: 600;
        color: var(--text-primary);
        line-height: 1.25;
        margin: 0 0 16px;
        padding-left: 14px;
        transition: color .3s ease;
    }

    /* Left border accent per category */
    .exp-category:nth-child(1) .exp-cat-title {
        border-left: 3px solid #0d9fe8;
    }

    .exp-category:nth-child(3) .exp-cat-title {
        border-left: 3px solid #ed8321;
    }

    .exp-category:nth-child(5) .exp-cat-title {
        border-left: 3px solid #0d9fe8;
    }

    /* Active state — set by JS when category is in viewport center */
    .exp-category.exp-active .exp-cat-num {
        opacity: 1;
    }

    .exp-category:nth-child(1).exp-active .exp-cat-title,
    .exp-category:nth-child(5).exp-active .exp-cat-title {
        color: #0d9fe8;
    }

    .exp-category:nth-child(3).exp-active .exp-cat-title {
        color: #ed8321;
    }

    .exp-cat-rule {
        height: 1px;
        background: #f0f2f5;
        margin-top: 8px;
        display: none;
        /* visible on mobile */
    }

    /* ── Right — services list ─────────────────────────────────── */
    .exp-services {
        display: flex;
        flex-direction: column;
    }

    /* ── Single service item ───────────────────────────────────── */
    .exp-item {
        display: grid;
        grid-template-columns: 46px 1fr;
        gap: 20px;
        align-items: start;
        padding: 28px 0;
        border-bottom: 1px solid #f4f6f8;
        transition: opacity .4s ease, transform .4s ease;
    }

    .exp-item.exp-item-last {
        border-bottom: none;
        padding-bottom: 0;
    }

    .exp-item:first-child {
        padding-top: 0;
    }

    /* ── Icons ─────────────────────────────────────────────────── */
    .exp-item-icon {
        width: 46px;
        height: 46px;
        border-radius: 10px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 18px;
        flex-shrink: 0;
        transition: background .25s ease, transform .25s ease;
    }

    .exp-icon-blue {
        background: rgba(13, 159, 232, .09);
        color: #0d9fe8;
    }

    .exp-icon-orange {
        background: rgba(237, 131, 33, .09);
        color: #ed8321;
    }

    .exp-item:hover .exp-icon-blue {
        background: rgba(13, 159, 232, .16);
        transform: translateY(-2px);
    }

    .exp-item:hover .exp-icon-orange {
        background: rgba(237, 131, 33, .16);
        transform: translateY(-2px);
    }

    /* ── Item content ──────────────────────────────────────────── */
    .exp-item-content {
        min-width: 0;
    }

    .exp-item-title {
        font-size: 15.5px;
        font-weight: 600;
        color: var(--text-primary);
        margin: 2px 0 6px;
        line-height: 1.3;
        transition: color .2s ease;
    }

    .exp-item:hover .exp-icon-blue~.exp-item-content .exp-item-title {
        color: #0d9fe8;
    }

    .exp-item:hover .exp-icon-orange~.exp-item-content .exp-item-title {
        color: #ed8321;
    }

    .exp-item-desc {
        font-size: 14px;
        color: var(--text-secondary);
        line-height: 1.65;
        margin: 0 0 12px;
    }

    /* ── Pills ─────────────────────────────────────────────────── */
    .exp-pills {
        display: flex;
        flex-wrap: wrap;
        gap: 6px;
    }

    .exp-pill {
        font-size: 11.5px;
        font-weight: 600;
        padding: 3px 11px;
        border-radius: 100px;
        white-space: nowrap;
        transition: background .2s ease, color .2s ease;
        background: #f4f6f8;
        color: #6c757d;
    }

    .exp-pill-orange {
        background: #f4f6f8;
        color: #6c757d;
    }

    .exp-item:hover .exp-pill {
        background: rgba(13, 159, 232, .10);
        color: #0d9fe8;
    }

    .exp-item:hover .exp-pill-orange {
        background: rgba(237, 131, 33, .10);
        color: #ed8321;
    }

    /* ── Responsive ────────────────────────────────────────────── */
    @media (max-width: 1024px) {
        .exp-container {
            padding: 0 24px;
        }
    }

    @media (max-width: 991px) {
        .exp-category {
            grid-template-columns: 180px 1fr;
            gap: 0 32px;
        }

        .exp-cat-label {
            position: static;
        }

        .exp-cat-title {
            font-size: 1.25rem;
        }
    }

    @media (max-width: 767px) {
        .exp-section {
            padding: 64px 0;
        }

        .exp-header {
            margin-bottom: 48px;
        }

        .exp-title {
            font-size: 2rem;
        }

        .exp-subtitle {
            font-size: 16px;
        }

        .exp-category {
            grid-template-columns: 1fr;
            gap: 20px;
            padding: 40px 0;
        }

        .exp-cat-label {
            display: flex;
            align-items: center;
            gap: 12px;
            position: static;
        }

        .exp-cat-num {
            margin-bottom: 0;
        }

        .exp-cat-title {
            font-size: 1.1rem;
            margin-bottom: 0;
            white-space: nowrap;
        }

        .exp-cat-title br {
            display: none;
        }

        .exp-cat-rule {
            display: block;
            flex: 1;
            margin: 0;
        }

        .exp-item {
            grid-template-columns: 40px 1fr;
            gap: 14px;
            padding: 22px 0;
        }

        .exp-item-icon {
            width: 40px;
            height: 40px;
            font-size: 16px;
        }
    }

    @media (max-width: 480px) {
        .exp-container {
            padding: 0 16px;
        }

        .exp-pill {
            font-size: 11px;
        }

        .exp-item-title {
            font-size: 15px;
        }
    }