* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background-color: #f5f6fa;
        }

        .main-container {
            max-width: 1400px;
            margin: 0 auto;
            min-height: calc(100vh - 60px - 50px);
            display: flex;
            padding: 20px;
            gap: 20px;
        }

        /* 綏�唱莨号��垸� */
        .sidebar {
            width: 240px;
            flex-shrink: 0;
            background: #fff;
            border-radius: 8px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
            overflow: hidden;
        }

        .sidebar-header {
            padding: 20px;
            background: linear-gradient(135deg, #5a6e7c 0%, #5a6e7c 0%);
            color: #fff;
            text-align: center;
        }

        .sidebar-header h3 {
            font-size: 18px;
            font-weight: 500;
            margin: 0;
        }

        .sidebar-nav {
            padding: 10px 0;
        }

        .nav-item-l {
            display: block;
            padding: 14px 24px;
            color: #333;
            text-decoration: none;
            font-size: 15px;
            cursor: pointer;
            transition: all 0.3s ease;
            border-left: 3px solid transparent;
            position: relative;
        }

        .nav-item-l:hover {
            background-color: #f0f4ff;
            color: #5a6e7c;
        }

        .nav-item-l.active {
            background-color: #e8f0fe;
            color: #5a6e7c;
            border-left-color: #5a6e7c;
            font-weight: 500;
        }

        .nav-item-l::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 3px;
            background: transparent;
            transition: all 0.3s ease;
        }

        .nav-item-l.active::before {
            background: #5a6e7c;
        }

        /* �割唱��絎劫�堺�桁� */
        .content-area {
            flex: 1;
            background: #fff;
            border-radius: 8px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
            overflow: hidden;
        }

        .content-panel {
            padding: 30px 40px;
            display: none;
        }

        .content-panel.active {
            display: block;
        }

        .content-title {
            font-size: 24px;
            color: #5a6e7c;
            margin-bottom: 20px;
            padding-bottom: 15px;
            border-bottom: 2px solid #e8f0fe;
            font-weight: 600;
        }

        .content-text {
            font-size: 15px;
            line-height: 1.8;
            color: #444;
            text-align: justify;
        }

        .content-text p {
            margin-bottom: 16px;
            text-indent: 2em;
        }

        .content-text strong {
            color: #5a6e7c;
            font-weight: 600;
        }

        .highlight-box {
            background: linear-gradient(135deg, #f8f9ff 0%, #e8f0fe 100%);
            border-left: 4px solid #5a6e7c;
            padding: 20px;
            margin: 20px 0;
            border-radius: 0 8px 8px 0;
        }

        .highlight-box p {
            margin: 0;
            text-indent: 0;
            color: #1a1a1a;
        }

        .service-list {
            margin: 20px 0;
            padding: 0;
            list-style: none;
        }

        .service-list li {
            padding: 12px 0;
            padding-left: 30px;
            position: relative;
            border-bottom: 1px dashed #e8f0fe;
        }

        .service-list li:last-child {
            border-bottom: none;
        }

        .service-list li::before {
            content: '��';
            position: absolute;
            left: 0;
            color: #5a6e7c;
            font-weight: bold;
        }

        .contact-info {
            background: #f8f9ff;
            border-radius: 8px;
            padding: 25px;
            margin-top: 20px;
        }

        .contact-item {
            display: flex;
            align-items: flex-start;
            margin-bottom: 15px;
            padding-bottom: 15px;
            border-bottom: 1px solid #e8f0fe;
        }

        .contact-item:last-child {
            margin-bottom: 0;
            padding-bottom: 0;
            border-bottom: none;
        }

        .contact-label {
            font-weight: 600;
            color: #1a1a1a;
            width: 80px;
            flex-shrink: 0;
        }

        .contact-value {
            color: #555;
            flex: 1;
        }

        /* ��綺�綣顒乗� */
        @media screen and (max-width: 768px) {
            .main-container {
                flex-direction: column;
                padding: 10px;
            }

            .sidebar {
                width: 100%;
            }

            .sidebar-nav {
                display: flex;
                flex-wrap: wrap;
                padding: 5px;
            }

            .nav-item-l {
                flex: 1;
                min-width: 50%;
                text-align: center;
                padding: 12px;
                border-left: none;
                border-bottom: 2px solid transparent;
            }

            .nav-item-l.active {
                border-left: none;
                border-bottom-color: #5a6e7c;
            }

            .content-panel {
                padding: 20px;
            }
        }


@media (max-width: 768px) {
    .footer {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 1.2rem;
        padding: 1.5rem 0;
        justify-content: center;
    }

    .footer-links {
        flex-wrap: wrap;
        gap: 10px 18px;
        justify-content: center;
    }

    .footer-links a {
        font-size: 12px;
    }

    /* 筝糸��絎劫�� */
    .main-container {
        padding: 10px;
        gap: 10px;
    }

    .sidebar {
        width: 100%;
    }

    .sidebar-nav {
        display: flex;
        flex-wrap: wrap;
        padding: 4px;
        gap: 4px;
    }

    .nav-item-l {
        flex: 1 1 calc(50% - 4px);
        min-width: 0;
        text-align: center;
        padding: 10px 6px;
        font-size: 12px;
        border-left: none;
        border-bottom: 2px solid transparent;
        border-radius: 6px;
    }

    .nav-item-l.active {
        border-left: none;
        border-bottom-color: #5a6e7c;
        background: #e8f0fe;
    }

    .nav-item-l:hover {
        background-color: #f0f4ff;
    }

    /* ��絎劫�� */
    .content-panel {
        padding: 14px;
    }

    .content-title {
        font-size: 16px;
    }

    .content-text {
        font-size: 12px;
    }

    .content-text p {
        margin-bottom: 8px;
    }

    /* 蕁級�∽��蘂��� */
    .page-header {
        padding: 20px 0;
        border-radius: 8px;
    }

    .page-header h1 {
        font-size: 1.2rem;
    }

    .page-header p {
        font-size: 0.72rem;
    }
}

/* ���� ���榊� 550px ���� */
@media (max-width: 550px) {
    /* ���镾��∝�絲取����丞ず腱糸����������� */
    .navbar {
        display: none !important;
    }

    .mobile-menu-btn {
        display: block;
    }

    /* 臀��弱失�九���� */
    .brand-category-grid,
    .featured-grid,
    .rank-cards-container {
        grid-template-columns: 1fr !important;
    }

    /* 蕁級�∽��蘂��肴�筝�罩ョ而絨� */
    .page-header {
        padding: 16px 0;
    }

    .page-header h1 {
        font-size: 1.05rem;
    }

    .page-header p {
        font-size: 0.68rem;
    }

    /* 箴ф�鎛取������膾球������ */
    .sidebar-nav {
        flex-direction: column;
    }

    .nav-item-l {
        flex: none;
        width: 100%;
        border-bottom: 1px solid #eef2f8;
        border-left: 3px solid transparent !important;
        border-radius: 0;
        padding: 10px 14px;
        text-align: left;
    }

    .nav-item-l.active {
        border-bottom: 1px solid #eef2f8;
        border-left: 3px solid #5a6e7c !important;
        background: #e8f0fe;
    }

    /* ��絎劫�阪��莨壕� */
    .content-panel {
        padding: 12px 10px;
    }

    .content-title {
        font-size: 15px;
    }

    /* 蕁笈���丈･�頑� */
    .footer-links {
        gap: 8px 12px;
    }
}
       
       

         /* ========== 絲取���� ========== */
        .navbar {
            max-width: 1350px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
            margin-bottom: 32px;
            border-bottom: 1px solid #eef2f8;
            flex-wrap: wrap;
            gap: 0.8rem;
            position: relative;
            z-index: 1000;
        }
       .navbar .logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: #1e3a5f;
            letter-spacing: -0.3px;
            text-decoration: none;
        }
        .logo span {
            color: #5685a8;
        }
        .nav-container {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .nav-links {
            display: flex;
            gap: 0.3rem;
            list-style: none;
        }
        .nav-item {
            position: relative;
        }
        .nav-item > a {
            display: flex;
            align-items: center;
            gap: 4px;
            padding: 0.6rem 1rem;
            text-decoration: none;
            color: #5a6e7c;
            font-weight: 500;
            font-size: 0.9rem;
            transition: all 0.2s;
            border-radius: 0.5rem;
        }
        .nav-item > a:hover, .nav-item > a.active {
            color: #2c6280;
            background: rgba(44, 98, 128, 0.08);
        }
        .nav-item > a .arrow {
            font-size: 0.7rem;
            transition: transform 0.2s;
        }
        .nav-item:hover > a .arrow {
            transform: rotate(180deg);
        }
        .nav-item .arrow {
            font-size: 10px;
        }

        /* 筝������� */
        .dropdown {
            position: absolute;
            top: 100%;
            left: 0;
            min-width: 200px;
            background: #fff;
            border-radius: 1rem;
            box-shadow: 0 10px 40px rgba(0,0,0,0.12);
            padding: 0.8rem 0;
            opacity: 0;
            visibility: hidden;
            transform: translateY(10px);
            transition: all 0.3s ease;
            z-index: 1001;
        }
        .nav-item-t:hover .dropdown {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .dropdown a {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.7rem 1.2rem;
            text-decoration: none;
            color: #5a6e7c;
            font-size: 0.85rem;
            transition: all 0.2s;
        }
        .dropdown a:hover {
            background: #f0f4f8;
            color: #2c6280;
        }
        .dropdown a .icon {
            font-size: 1rem;
        }
        .dropdown-divider {
            height: 1px;
            background: #eef2f8;
            margin: 0.5rem 0;
        }
        .dropdown-title {
            padding: 0.5rem 1.2rem;
            font-size: 0.75rem;
            color: #9aaebf;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }
        .nav-btn {
            background: linear-gradient(135deg, #ff6b35, #ff8f5a);
            padding: 0.6rem 1.4rem;
            border-radius: 2rem;
            text-decoration: none;
            color: white;
            font-weight: 500;
            font-size: 0.85rem;
            transition: all 0.2s;
            box-shadow: 0 4px 12px rgba(255, 107, 53, 0.25);
        }
        .nav-btn:hover {
            background: linear-gradient(135deg, #e55a28, #ff6b35);
            box-shadow: 0 6px 16px rgba(255, 107, 53, 0.35);
            transform: translateY(-2px);
        }
        .nav-login {
            color: #5a6e7c;
            text-decoration: none;
            font-size: 0.85rem;
            font-weight: 500;
            padding: 0.6rem 1rem;
            border-radius: 0.5rem;
            transition: all 0.2s;
        }
        .nav-login:hover {
            color: #2c6280;
            background: rgba(44, 98, 128, 0.08);
        }

        /* 腱糸����������� */
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            padding: 0.5rem;
            cursor: pointer;
        }
        .mobile-menu-btn span {
            display: block;
            width: 24px;
            height: 2px;
            background: #5a6e7c;
            margin: 5px 0;
            border-radius: 2px;
            transition: all 0.3s;
        }

         /* 蕁級�∽��蘂��� */
        .page-header {
            background: linear-gradient(135deg, #94a2b4, #2c6280);
            border-radius: 12px;
            padding: 50px 0;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
            max-width: 1352px;
            margin: 0 auto;
        }

        .page-header .container {
            max-width: 1160px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .page-header::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(255,255,255,0.1);
        }

        .page-header h1 {
            font-size: 2.2rem;
            margin-bottom: 10px;
            position: relative;
        }

        .page-header p {
            font-size: 1rem;
            opacity: 0.9;
            position: relative;
        }

  /* 綺��� */
        /*.footer {*/
        /*     max-width: 1350px;*/
        /*    margin: 0 auto;*/
        /*    background: #f5f6f8;*/
        /*    padding: 30px 0;*/
        /*    margin-top: 40px;*/
        /*    border-top: 1px solid #eee;*/
        /*}*/

        /*.footer .container {*/
        /*    display: flex;*/
        /*    justify-content: space-between;*/
        /*    align-items: center;*/
        /*}*/

        /*.footer-col .logo {*/
        /*    font-size: 1.1rem;*/
        /*    margin-bottom: 8px;*/
        /*}*/

        /*.footer-col p {*/
        /*    color: #999;*/
        /*    font-size: 13px;*/
        /*}*/

        /*.footer-links {*/
        /*    display: flex;*/
        /*    gap: 20px;*/
        /*}*/

        /*.footer-links a {*/
        /*    color: #666;*/
        /*    text-decoration: none;*/
        /*    font-size: 13px;*/
        /*    transition: color 0.3s;*/
        /*}*/

        /*.footer-links a:hover {*/
        /*    color: #5a7388;*/
        /*}*/
        .footer {
               max-width: 1400px;
              margin: 0 auto;
            margin-top: 3rem;
            padding: 2rem 0 3rem;
            border-top: 1px solid #eef2f8;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 2rem;
        }
        .footer-col p {
            color: #8aa2b8;
            font-size: 0.8rem;
            margin-top: 0.5rem;
        }
        .footer-links {
            display: flex;
            gap: 2rem;
        }
        .footer-links a {
            text-decoration: none;
            color: #5a6e7c;
            font-size: 0.8rem;
        }