/* --- H-LIFT MODERN INDUSTRIAL THEME --- */
    :root {
        --brand-primary: #1A365D; /* Deep Slate Blue */
        --brand-accent: #FF6B00;  /* Vibrant Safety Orange */
        --text-main: #2D3748;
        --text-muted: #718096;
        --bg-page: #F7FAFC;
        --bg-card: #FFFFFF;
        --border-color: #E2E8F0;
        --danger-red: #E53E3E;
        --danger-bg: #FFF5F5;
        --warning-yellow: #D69E2E;
        --warning-bg: #FFFFF0;
        --info-blue: #3182CE;
        --info-bg: #EBF8FF;
        --radius-md: 10px;
        --radius-lg: 16px;
        --shadow-sm: 0 2px 4px rgba(0,0,0,0.02);
        --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
    }

    /* Global Typography */
    * { box-sizing: border-box; }
    body {
        font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
        font-size: 16px;
        color: var(--text-main);
        line-height: 1.6;
        margin: 0;
        padding: 20px;
        background-color: var(--bg-page);
    }

    .article-container {
        max-width: 1100px;
        margin: 0 auto;
    }

    /* --- 1. HERO SECTION --- */
    .hero-section {
        background: var(--bg-card);
        padding: 40px;
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-sm);
        margin-bottom: 40px;
        border-top: 5px solid var(--brand-primary);
        text-align: center;
    }

    .hero-title {
        font-size: 36px;
        color: var(--brand-primary);
        margin: 0 0 15px 0;
        font-weight: 800;
        letter-spacing: -0.5px;
    }

    .hero-subtitle {
        font-size: 18px;
        color: var(--text-muted);
        font-weight: 600;
        margin-bottom: 20px;
    }

    .tags-wrapper {
        display: flex;
        gap: 12px;
        flex-wrap: wrap;
        justify-content: center;
        margin-bottom: 25px;
    }

    .tag {
        background: #EDF2F7;
        color: var(--brand-primary);
        padding: 6px 16px;
        border-radius: 20px;
        font-size: 13px;
        font-weight: 700;
        border: 1px solid var(--border-color);
    }

    .tag.tag-highlight {
        background: var(--brand-accent);
        color: #fff;
        border-color: var(--brand-accent);
    }

    .hero-desc {
        color: var(--text-main);
        max-width: 900px;
        margin: 0 auto;
        text-align: left;
    }

    /* --- 2. SECTION HEADINGS --- */
    .section-heading {
        font-size: 24px;
        color: var(--brand-primary);
        margin-top: 0;
        margin-bottom: 25px;
        display: flex;
        align-items: center;
        gap: 10px;
    }

    .section-heading::before {
        content: "";
        width: 6px;
        height: 24px;
        background: var(--brand-accent);
        border-radius: 4px;
    }

    /* --- 3. SPLIT LAYOUT --- */
    .split-container {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 30px;
        margin-bottom: 40px;
    }

    @media (max-width: 800px) {
        .split-container { grid-template-columns: 1fr; }
    }

    .list-block {
        background: var(--bg-card);
        padding: 30px;
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-sm);
        height: 100%;
        border: 1px solid var(--border-color);
        border-top: 4px solid var(--info-blue);
    }

    .list-block.warning { border-top-color: var(--warning-yellow); }
    .list-block.danger { border-top-color: var(--danger-red); }

    .list-block h3 {
        margin-top: 0;
        margin-bottom: 20px;
        font-size: 20px;
        display: flex;
        align-items: center;
        gap: 10px;
    }

    .list-block.info h3 { color: var(--info-blue); }
    .list-block.warning h3 { color: #975A16; }
    .list-block.danger h3 { color: var(--danger-red); }

    .list-block ul {
        list-style: none;
        padding: 0;
        margin: 0;
    }

    .list-block li {
        margin-bottom: 15px;
        padding-left: 28px;
        position: relative;
        color: var(--text-main);
    }

    .list-block li:last-child { margin-bottom: 0; }

    .list-block li::before {
        content: "■";
        color: var(--brand-accent);
        font-size: 14px;
        position: absolute;
        left: 0;
        top: 2px;
    }

    /* --- 4. DATA TABLE --- */
    .table-wrapper {
        background: var(--bg-card);
        border-radius: var(--radius-lg);
        padding: 30px;
        box-shadow: var(--shadow-md);
        margin-bottom: 40px;
        border: 1px solid var(--border-color);
    }

    .table-responsive {
        width: 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        border-radius: 8px;
        border: 1px solid var(--border-color);
    }

    .tech-table {
        width: 100%;
        border-collapse: collapse;
        min-width: 600px;
        font-size: 15px;
    }

    .tech-table th {
        background-color: var(--brand-primary);
        color: #ffffff;
        font-weight: 600;
        padding: 12px 10px;
        text-align: center !important;
        vertical-align: middle !important;
        border: 1px solid rgba(255,255,255,0.1);
    }

    .tech-table td {
        padding: 12px 10px;
        text-align: center !important;
        vertical-align: middle !important;
        border-bottom: 1px solid var(--border-color);
        border-right: 1px solid var(--border-color);
        color: var(--text-main);
    }

    .tech-table tbody tr:hover { background-color: #F0F4F8; }
    .tech-table td:first-child { font-weight: 700; }

    /* Elegant Color Swatch */
    .color-cell-wrapper {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 10px;
        font-weight: 600;
    }

    .color-dot {
        width: 16px;
        height: 16px;
        border-radius: 50%;
        display: inline-block;
        box-shadow: inset 0 1px 3px rgba(0,0,0,0.2);
    }
    .c-violet { background-color: #8e44ad; }
    .c-green  { background-color: #27ae60; }
    .c-yellow { background-color: #f1c40f; }
    .c-grey   { background-color: #7f8c8d; }
    .c-red    { background-color: #c0392b; }
    .c-brown  { background-color: #795548; }
    .c-blue   { background-color: #2980b9; }
    .c-orange { background-color: #e67e23; }

    /* --- 5. ALERT BANNERS --- */
    .alert-banner {
        background-color: var(--danger-bg);
        border: 1px solid #FEB2B2;
        border-left: 8px solid var(--danger-red);
        padding: 30px;
        border-radius: var(--radius-md);
        margin-bottom: 40px;
        box-shadow: var(--shadow-sm);
    }

    .alert-banner h3 {
        color: var(--danger-red);
        margin: 0 0 15px 0;
        font-size: 22px;
        display: flex;
        align-items: center;
        gap: 10px;
    }

    .alert-banner p { margin: 0 0 10px 0; color: #742A2A; }
    .alert-banner p:last-child { margin-bottom: 0; }
    .alert-banner strong { color: var(--danger-red); }

    /* --- 6. SPLIT FOOTER (CTA) --- */
    .footer-split {
        display: grid;
        grid-template-columns: 1fr;
        background: var(--bg-card);
        padding: 40px;
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-sm);
        border-top: 5px solid var(--brand-accent);
        text-align: center;
    }

    .footer-content h3 {
        color: var(--brand-primary);
        margin-top: 0;
        margin-bottom: 15px;
        font-size: 24px;
    }

    .footer-content p {
        color: var(--text-main);
        margin-bottom: 15px;
    }