/* =========================
       Modern Color System
    ========================= */
    :root {
        --primary: #1f3c88;
        --primary-dark: #14274e;
        --accent: #4a90e2;
        --accent-soft: #eaf2ff;
        --text-main: #1b2430;
        --text-sub: #5b6574;
        --white: #ffffff;
        --line: #dfe7f3;
        --bg-soft: #f6f8fc;
        --bg-card: rgba(255, 255, 255, 0.92);
        --shadow-sm: 0 10px 25px rgba(20, 39, 78, 0.08);
        --shadow-md: 0 18px 40px rgba(20, 39, 78, 0.12);
        --radius-lg: 18px;
        --radius-pill: 999px;
    }

    /* =========================
       Header / Menu
    ========================= */
/*
    .header_area {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        z-index: 9999;
        transition: all 0.3s ease;
    }

    .header_area .main_menu {
        width: 100%;
    }

    .header_area .navbar {
        width: 100%;
        transition: all 0.3s ease;
    }

    .header_area .navbar .nav .nav-item > .nav-link {
        color: #fff !important;
        font-weight: 600;
        letter-spacing: 0.2px;
        transition: color 0.25s ease;
    } 
*/

    /* 스크롤 시 헤더 전체 고정 */
/*
    .header_area.navbar_fixed {
        position: fixed !important;
        top: 0;
        left: 0;
        width: 100%;
        z-index: 9999;
        background: rgba(20, 39, 78, 0.95) !important;
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
        animation: headerSlideDown 0.35s ease;
    }

    .header_area.navbar_fixed .main_menu {
        width: 100%;
    }

    .header_area.navbar_fixed .navbar {
        width: 100%;
    }

    .header_area.navbar_fixed .main_menu .navbar .nav .nav-item > .nav-link {
        color: #fff !important;
    }

    .header_area .navbar .nav .nav-item:hover > .nav-link,
    .header_area .navbar .nav .nav-item.active > .nav-link,
    .header_area .navbar .nav .nav-item.submenu.open > .nav-link,
    .header_area.navbar_fixed .main_menu .navbar .nav .nav-item:hover > .nav-link,
    .header_area.navbar_fixed .main_menu .navbar .nav .nav-item.active > .nav-link,
    .header_area.navbar_fixed .main_menu .navbar .nav .nav-item.submenu.open > .nav-link {
        color: #8ec5ff !important;
    }

    .header_area .navbar .nav .nav-item.submenu .dropdown-menu {
        border: 1px solid rgba(223, 231, 243, 0.9);
        border-radius: 14px;
        padding: 10px 0;
        background: rgba(255, 255, 255, 0.97);
        box-shadow: 0 18px 40px rgba(20, 39, 78, 0.14);
        overflow: hidden;
    }

    .header_area .navbar .nav .nav-item.submenu ul li a,
    .header_area .navbar .nav .nav-item.submenu ul li .nav-link,
    .header_area .navbar .nav .nav-item.submenu .dropdown-item {
        color: var(--text-main) !important;
        font-size: 14px;
        font-weight: 500;
        white-space: nowrap;
        padding: 10px 20px;
        transition: all 0.2s ease;
    }

    .header_area .navbar .nav .nav-item.submenu ul li a:hover,
    .header_area .navbar .nav .nav-item.submenu ul li .nav-link:hover,
    .header_area .navbar .nav .nav-item.submenu .dropdown-item:hover {
        color: var(--primary) !important;
        background: var(--accent-soft) !important;
    }

    .dropdown-menu .dropdown-item-text {
        display: block;
        color: #8a94a6;
        font-weight: 700;
        font-size: 12px;
        letter-spacing: 1px;
        padding: 12px 20px 8px;
        white-space: nowrap;
    }

    .dropdown-divider {
        margin: 8px 0;
        border-top: 1px solid var(--line);
    }

    .pl-4 {
        padding-left: 30px !important;
    }

    .nowrap {
        white-space: nowrap;
    }

    @keyframes headerSlideDown {
        from {
            transform: translateY(-100%);
            opacity: 0.8;
        }
        to {
            transform: translateY(0);
            opacity: 1;
        }
    }
*/
    /* =========================
       Banner
    ========================= */
    .banner_area {
        position: relative;
    }

    .banner_area .banner_inner {
        background: linear-gradient(135deg, rgba(20, 39, 78, 0.88), rgba(31, 60, 136, 0.78));
    }

    .banner_area .head-title {
        color: #fff;
        font-size: 36px;
        font-weight: 700;
        line-height: 1.5;
        letter-spacing: -0.3px;
        text-shadow: 0 4px 20px rgba(0, 0, 0, 0.18);
    }

    /* =========================
       Section Title
    ========================= */
    .portfolio_details_area {
        background: linear-gradient(180deg, #ffffff 0%, #f7f9fc 100%);
    }

    h1.section-title {
        text-align: center;
        font-size: 38px;
        font-weight: 800;
        color: var(--primary-dark);
        margin-bottom: 12px;
        letter-spacing: -0.6px;
    }

    hr.title-line {
        border: none;
        height: 4px;
        width: 56px;
        margin: 18px auto 28px;
        background: linear-gradient(90deg, var(--primary), var(--accent));
        border-radius: var(--radius-pill);
        opacity: 1;
    }

    /* =========================
       Card Grid
    ========================= */
    .feature_inner.row {
        display: flex;
        flex-wrap: wrap;
    }

    .feature_inner .col-lg-4,
    .feature_inner .col-lg-6 {
        display: flex;
        margin-bottom: 8px;
    }

    .feature_item {
        flex: 1;
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        text-align: left;
        padding: 38px 30px;
        background: var(--bg-card);
        border: 1px solid rgba(223, 231, 243, 0.9);
        border-radius: var(--radius-lg);
        transition: transform 0.28s ease, box-shadow 0.28s ease, border-color 0.28s ease;
        margin-bottom: 22px;
        min-height: 340px;
        height: auto;
        position: relative;
        box-shadow: var(--shadow-sm);
        overflow: hidden;
    }

    .feature_item::before {
        content: "";
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 5px;
        background: linear-gradient(90deg, var(--primary), var(--accent));
        opacity: 0.95;
    }

    .feature_item:hover {
        transform: translateY(-8px);
        box-shadow: var(--shadow-md);
        border-color: rgba(74, 144, 226, 0.28);
    }

    .feature_item h4 {
        font-size: 24px;
        font-weight: 800;
        color: var(--primary-dark);
        margin-bottom: 16px;
        padding-top: 4px;
        letter-spacing: -0.3px;
    }

    .feature_item p {
        font-size: 15px;
        color: var(--text-sub);
        line-height: 1.8;
        flex-grow: 1;
        margin-bottom: 0;
        padding-top: 0;
    }

    .storage_category_title {
        font-size: 20px;
        font-weight: 800;
        letter-spacing: 1px;
        color: #14274e;
        margin-bottom: 18px;
        position: relative;
        display: inline-block;
    }

    .storage_category_title::after {
        content: "";
        display: block;
        width: 40px;
        height: 3px;
        background: linear-gradient(90deg, #1f3c88, #4a90e2);
        margin-top: 8px;
        border-radius: 2px;
    }

    .storage_item {
    margin-bottom: 14px;
    }

    .storage_item strong {
        font-size: 20px;
        font-weight: 700;
        color: #000;
    }

    .storage_item span {
        margin-left: 12px;
        font-size: 15px;
        color: #6b7280;
    }
    /* =========================
       Buttons
    ========================= */
    .main_btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        align-self: flex-start;
        min-width: 128px;
        padding: 12px 26px;
        margin-top: 24px;
        background: linear-gradient(135deg, var(--primary), var(--accent));
        color: #fff !important;
        border-radius: var(--radius-pill);
        text-decoration: none;
        font-size: 14px;
        font-weight: 700;
        letter-spacing: 0.2px;
        line-height: normal;
        border: none;
        box-shadow: 0 10px 24px rgba(31, 60, 136, 0.24);
        transition: transform 0.22s ease, box-shadow 0.22s ease, opacity 0.22s ease;
    }

    .main_btn:hover {
        transform: translateY(-2px);
        box-shadow: 0 14px 28px rgba(31, 60, 136, 0.28);
        color: #fff !important;
        text-decoration: none;
        opacity: 0.96;
    }

    .center-btn {
        display: inline-flex !important;
        margin: 24px auto 0 !important;
        text-align: center !important;
        float: none !important;
        align-self: center !important;
    }

    /* =========================
       Shelf Card
    ========================= */
    .shelf-card {
        padding: 42px 42px;
        min-height: 250px;
        text-align: center;
    }

    .shelf-card h4 {
        margin-bottom: 18px;
    }

    .shelf-card p {
        margin-bottom: 26px;
    }

    /* =========================
       Footer
    ========================= */
    .footer_area {
        background: linear-gradient(135deg, #14274e, #1c355e);
        color: rgba(255, 255, 255, 0.88);
    }

    .footer_area h3 {
        color: #fff;
        font-weight: 700;
        margin-bottom: 12px;
    }

    .footer_area a,
    .footer_area p,
    .footer_area div,
    .footer_area span,
    .footer_area li {
        color: rgba(255, 255, 255, 0.82);
    }

    /* =========================
       Mobile
    ========================= */
    @media (max-width: 991px) {
        .banner_area .head-title {
            font-size: 26px;
            line-height: 1.5;
        }

        .feature_item {
            min-height: auto;
            text-align: center;
            padding: 30px 22px;
        }

        .feature_item h4 {
            font-size: 22px;
            text-align: center;
        }

        .feature_item p {
            text-align: center;
            font-size: 14px;
            line-height: 1.7;
        }

        .feature_inner .col-lg-4,
        .feature_inner .col-lg-6 {
            width: 100%;
            flex: 0 0 100%;
            max-width: 100%;
            display: block;
        }

        .main_btn {
            margin-top: 18px;
        }

        h1.section-title {
            font-size: 28px;
        }

        .shelf-card {
            min-height: auto;
            padding: 28px 22px;
        }
    }

    /* =========================
    3-Column Storage Category Version
    ========================= */

    ========================= */
    .portfolio_details_area .container {
        max-width: 1320px;
    }

    .storage_category_row {
        display: grid;
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 30px;
        width: 100%;
    }

    .storage_category_col {
        width: 100%;
    }

    .storage_category_card {
        position: relative;
        width: 100%;
        min-height: 340px;
        padding: 34px 34px 30px;
        background: #f8fafc;
        border: 1px solid #dbe5f1;
        border-radius: 22px;
        box-shadow: 0 10px 28px rgba(20, 39, 78, 0.06);
        transition: transform 0.28s ease, box-shadow 0.28s ease, border-color 0.28s ease;
        overflow: hidden;
    }

    .storage_category_card::before {
        content: "";
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 4px;
        background: linear-gradient(90deg, #1d63e8, #67a8ff);
    }

    .storage_category_card:hover {
        transform: translateY(-6px);
        box-shadow: 0 18px 38px rgba(20, 39, 78, 0.12);
        border-color: #b8d2f3;
    }

    .storage_category_title {
        font-size: 15px;
        font-weight: 800;
        color: #111;
        letter-spacing: 0.8px;
        text-transform: uppercase;
        margin-bottom: 30px;
        line-height: 1.2;
    }

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

    .storage_product_list li {
        margin-bottom: 24px;
    }

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

    .storage_product_link {
        display: inline-flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 6px;
        text-decoration: none !important;
        line-height: 1.45;
    }

    .storage_product_link .product_name {
        font-size: 22px;
        font-weight: 800;
        color: #111;
        letter-spacing: -0.3px;
        transition: color 0.22s ease;
    }

    .storage_product_link .product_desc {
        font-size: 16px;
        font-weight: 600;
        color: #7a7f8c;
        transition: color 0.22s ease;
    }

    .storage_product_link .product_arrow {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 18px;
        height: 18px;
        opacity: 0;
        transform: translateX(-6px);
        transition: all 0.22s ease;
        color: #1d63e8;
        font-size: 18px;
        line-height: 1;
    }

    .storage_product_link:hover .product_name,
    .storage_product_link:focus .product_name {
        color: #1d63e8;
    }

    .storage_product_link:hover .product_desc,
    .storage_product_link:focus .product_desc {
        color: #1d63e8;
    }

    .storage_product_link:hover .product_arrow,
    .storage_product_link:focus .product_arrow {
        opacity: 1;
        transform: translateX(0);
    }

    .storage_bottom_glow {
        position: absolute;
        bottom: 12px;
        left: 50%;
        transform: translateX(-50%);
        width: 120px;
        height: 16px;
        background: radial-gradient(circle, rgba(214, 222, 235, 0.9) 0%, rgba(214, 222, 235, 0) 72%);
        pointer-events: none;
    }

    /* Tablet */
    @media (max-width: 991px) {
        .storage_category_row {
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 24px;
        }

        .storage_category_card {
            min-height: 300px;
            padding: 28px 24px 24px;
        }

        .storage_product_link .product_name {
            font-size: 20px;
        }

        .storage_product_link .product_desc {
            font-size: 15px;
        }
    }

    /* Mobile */
    @media (max-width: 767px) {
        .storage_category_row {
            grid-template-columns: 1fr;
            gap: 18px;
        }

        .storage_category_card {
            min-height: auto;
            padding: 22px 18px 22px;
            border-radius: 18px;
        }

        .storage_category_title {
            font-size: 14px;
            margin-bottom: 18px;
        }

        .storage_product_list li {
            margin-bottom: 16px;
        }

        .storage_product_link {
            gap: 4px;
            align-items: baseline;
        }

        .storage_product_link .product_name {
            font-size: 18px;
        }

        .storage_product_link .product_desc {
            font-size: 14px;
        }

        .storage_product_link .product_arrow {
            opacity: 1;
            transform: translateX(0);
            font-size: 16px;
        }

        .storage_bottom_glow {
            display: none;
        }
    }

/* EF-Series 등 준비중 제품 */
.storage_product_link--disabled {
    cursor: default;
    opacity: 0.58;
    background: rgba(246, 248, 252, 0.88);
    box-shadow: none;
}

.storage_product_link--disabled:hover {
    transform: none;
    box-shadow: none;
}

.product_status {
    margin-left: auto;
    padding: 5px 9px;
    border: 1px solid var(--line);
    border-radius: var(--radius-pill);
    color: var(--text-sub);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.06em;
    white-space: nowrap;
}

/* =========================
   Storage section spacing
========================= */
.portfolio_details_area.p_120 {
    padding-top: 100px;
    padding-bottom: 120px;
}

.portfolio_details_area.p_120 > .container > .section-title {
    margin-top: 0;
}

@media (max-width: 991px) {
    .portfolio_details_area.p_120 {
        padding-top: 105px;
        padding-bottom: 90px;
    }
}

@media (max-width: 767px) {
    .portfolio_details_area.p_120 {
        padding-top: 80px;
        padding-bottom: 72px;
    }
}

/* =========================
   Storage title-to-card spacing
========================= */
.portfolio_details_area.p_120 .title-line {
    margin-bottom: 54px;
}

.storage_category_row {
    margin-top: 0;
}

@media (max-width: 991px) {
    .portfolio_details_area.p_120 .title-line {
        margin-bottom: 42px;
    }
}

@media (max-width: 767px) {
    .portfolio_details_area.p_120 .title-line {
        margin-bottom: 32px;
    }
}