/* ===== Reset & Base ===== */
    *,
    *::before,
    *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }

    body {
        font-family: 'Roboto', 'Segoe UI', sans-serif;
        background: #ffffff;
        color: #1a1a2e;
        line-height: 1.6;
    }

    .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 24px;
    }

    /* ===== Core Advantages – Pure White ===== */
    .core-advantages {
        padding: 80px 0 100px;
        background: #ffffff;
        position: relative;
        overflow: hidden;
    }

    .core-advantages::before,
    .core-advantages::after {
        display: none;
    }

    /* ---- Section Header ---- */
    .section-header {
        text-align: center;
        margin-bottom: 60px;
        position: relative;
        z-index: 1;
    }

    .section-badge {
        display: inline-block;
        background: rgba(42, 92, 170, 0.10);
        color: #2A5CAA;
        font-size: 0.7rem;
        font-weight: 700;
        letter-spacing: 2px;
        text-transform: uppercase;
        padding: 6px 22px;
        border-radius: 30px;
        margin-bottom: 18px;
        border: 1px solid rgba(42, 92, 170, 0.08);
    }

    .section-header h2 {
        font-family: 'Montserrat', sans-serif;
        font-size: 2.6rem;
        font-weight: 800;
        color: #1a1a2e;
        letter-spacing: -0.5px;
        margin-bottom: 16px;
    }

    .section-header h2 span {
        color: #2A5CAA;
        position: relative;
    }

    .section-header h2 span::after {
        content: '';
        position: absolute;
        bottom: 4px;
        left: 0;
        width: 100%;
        height: 8px;
        background: rgba(255, 107, 53, 0.25);
        border-radius: 4px;
        z-index: -1;
    }

    .section-header p {
        font-size: 1.1rem;
        color: #555;
        max-width: 600px;
        margin: 0 auto;
        font-weight: 400;
    }

    /* ---- Advantage Grid (4 columns) ---- */
    .advantages-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 30px;
        position: relative;
        z-index: 1;
    }

    /* ---- Advantage Card ---- */
    .adv-card {
        background: #ffffff;
        border-radius: 20px;
        padding: 36px 28px 32px;
        box-shadow: 0 8px 40px rgba(0, 0, 0, 0.04);
        border: 1px solid rgba(42, 92, 170, 0.06);
        transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
        position: relative;
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        text-align: left;
    }

    .adv-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 4px;
        background: linear-gradient(90deg, #2A5CAA, #4A7CC8);
        border-radius: 20px 20px 0 0;
        opacity: 0;
        transition: opacity 0.4s ease;
    }

    .adv-card:hover {
        transform: translateY(-10px);
        box-shadow: 0 20px 60px rgba(42, 92, 170, 0.12);
        border-color: rgba(42, 92, 170, 0.12);
    }

    .adv-card:hover::before {
        opacity: 1;
    }

    .adv-card .card-number {
        position: absolute;
        top: 16px;
        right: 20px;
        font-family: 'Montserrat', sans-serif;
        font-size: 0.7rem;
        font-weight: 700;
        color: rgba(42, 92, 170, 0.12);
        letter-spacing: 0.5px;
    }

    /* ---- Icon ---- */
    .adv-icon {
        width: 68px;
        height: 68px;
        margin-bottom: 24px;
        flex-shrink: 0;
        display: flex;
        align-items: center;
        justify-content: center;
        background: linear-gradient(135deg, rgba(42, 92, 170, 0.06), rgba(74, 124, 200, 0.10));
        border-radius: 16px;
        transition: all 0.4s ease;
        position: relative;
    }

    .adv-card:hover .adv-icon {
        background: linear-gradient(135deg, rgba(42, 92, 170, 0.12), rgba(74, 124, 200, 0.18));
        transform: scale(1.02);
    }

    .adv-icon svg {
        width: 36px;
        height: 36px;
        display: block;
        transition: transform 0.4s ease;
    }

    .adv-card:hover .adv-icon svg {
        transform: scale(1.05) rotate(-2deg);
    }

    /* ---- Content ---- */
    .adv-card h3 {
        font-family: 'Montserrat', sans-serif;
        font-size: 1.35rem;
        font-weight: 700;
        color: #1a1a2e;
        margin: 0 0 10px 0;
        line-height: 1.3;
    }

    .adv-card h3 .highlight {
        color: #2A5CAA;
    }

    .adv-card .adv-desc {
        font-size: 0.95rem;
        color: #555;
        line-height: 1.7;
        margin: 0 0 18px 0;
        flex: 1;
    }

    /* ---- Feature List ---- */
    .adv-features {
        list-style: none;
        padding: 0;
        margin: 0 0 20px 0;
        width: 100%;
        display: flex;
        flex-direction: column;
        gap: 6px;
    }

    .adv-features li {
        font-size: 0.85rem;
        color: #444;
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 4px 0;
    }

    .adv-features li .check {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 18px;
        height: 18px;
        background: #2A5CAA;
        border-radius: 50%;
        color: #fff;
        font-size: 11px;
        font-weight: 700;
        flex-shrink: 0;
    }

    .adv-features li .check.accent {
        background: #FF6B35;
    }

    /* ---- Tag ---- */
    .adv-tag {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        padding: 4px 16px 4px 14px;
        border-radius: 20px;
        font-size: 0.7rem;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 0.5px;
        color: #fff;
        background: linear-gradient(135deg, #2A5CAA, #4A7CC8);
        margin-top: 4px;
        transition: all 0.3s ease;
    }

    .adv-card:hover .adv-tag {
        transform: translateX(4px);
    }

    .adv-tag.tag-accent {
        background: linear-gradient(135deg, #FF6B35, #ff8a5c);
    }

    .adv-tag.tag-green {
        background: linear-gradient(135deg, #0f9d58, #34a853);
    }

    .adv-tag.tag-purple {
        background: linear-gradient(135deg, #7c3aed, #a78bfa);
    }

    .adv-tag .dot {
        width: 6px;
        height: 6px;
        border-radius: 50%;
        background: rgba(255, 255, 255, 0.6);
        display: inline-block;
    }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
        .advantages-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .adv-card {
            padding: 32px 24px 28px;
        }
        .section-header h2 {
            font-size: 2.2rem;
        }
    }

    @media (max-width: 600px) {
        .advantages-grid {
            grid-template-columns: 1fr;
            max-width: 460px;
            margin: 0 auto;
        }
        .core-advantages {
            padding: 48px 0 56px;
        }
        .section-header h2 {
            font-size: 1.8rem;
        }
        .section-header p {
            font-size: 1rem;
        }
        .adv-card {
            padding: 28px 20px 24px;
        }
        .adv-icon {
            width: 56px;
            height: 56px;
        }
        .adv-icon svg {
            width: 30px;
            height: 30px;
        }
        .adv-card h3 {
            font-size: 1.2rem;
        }
        .adv-card .card-number {
            top: 12px;
            right: 14px;
            font-size: 0.6rem;
        }
    }

    @media (max-width: 400px) {
        .container {
            padding: 0 16px;
        }
        .section-header h2 {
            font-size: 1.5rem;
        }
        .adv-card h3 {
            font-size: 1.05rem;
        }
        .adv-features li {
            font-size: 0.8rem;
        }
    }