/* ============================================
   Header Styles - Professional Modern Design
   ============================================ */
.header {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.05), 0 4px 20px rgba(0, 0, 0, 0.08);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0;
    min-height: 72px;
}

.logo {
    display: flex;
    align-items: center;
}

.logo a {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: #1a5f3f;
    text-decoration: none;
    transition: color 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo a:hover {
    color: #27ae60;
}

.logo a::before {
    content: '';
    width: 8px;
    height: 8px;
    background: linear-gradient(135deg, #27ae60, #52c97a);
    border-radius: 2px;
    display: inline-block;
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: 8px;
    align-items: center;
    margin: 0;
    padding: 0;
}

.main-nav > ul > li {
    position: relative;
}

.main-nav a {
    color: #2c3e50;
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    letter-spacing: 0.2px;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 12px 16px;
    border-radius: 8px;
    white-space: nowrap;
}

.main-nav a::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(39, 174, 96, 0.08);
    border-radius: 8px;
    opacity: 0;
    transition: opacity 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.main-nav a:hover {
    color: #27ae60;
}

.main-nav a:hover::before {
    opacity: 1;
}

.main-nav .dropdown {
    position: relative;
}

.main-nav .dropdown > a {
    padding-right: 8px;
}

.main-nav .dropdown > a .arrow {
    font-size: 10px;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    margin-left: 2px;
}

.main-nav .dropdown:hover > a .arrow {
    transform: rotate(180deg);
}

.main-nav .dropdown:hover > a {
    color: #27ae60;
}

.main-nav .dropdown-menu {
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    transform: translateY(-8px) scale(0.96);
    background: #fff;
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.12), 
                0 4px 16px rgba(0, 0, 0, 0.08),
                0 0 0 1px rgba(0, 0, 0, 0.04);
    min-width: 280px;
    width: max-content;
    max-width: 400px;
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    list-style: none;
    border-radius: 12px;
    overflow: hidden;
    z-index: 1000;
    display: block;
}

.main-nav .dropdown-menu::before {
    content: '';
    position: absolute;
    top: -6px;
    left: 24px;
    transform: rotate(45deg);
    width: 12px;
    height: 12px;
    background: #fff;
    border-left: 1px solid rgba(0, 0, 0, 0.06);
    border-top: 1px solid rgba(0, 0, 0, 0.06);
}

.main-nav .dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

/* 确保下拉菜单在中等屏幕上也能正常显示 */
@media (max-width: 1024px) and (min-width: 769px) {
    .main-nav .dropdown-menu {
        min-width: 260px;
        max-width: 300px;
    }
}

.main-nav .dropdown-menu li {
    padding: 0;
    margin: 0;
    position: relative;
    width: 100%;
    display: block;
}

.main-nav .dropdown-menu li:not(:last-child)::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 20px;
    right: 20px;
    height: 1px;
    background: rgba(0, 0, 0, 0.06);
}

.main-nav .dropdown-menu a {
    display: block;
    padding: 12px 20px;
    color: #34495e;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    margin: 0;
    border-radius: 0;
    width: 100%;
    box-sizing: border-box;
}

.main-nav .dropdown-menu a:hover {
    color: #27ae60;
    background: rgba(39, 174, 96, 0.06);
}

.cta-button {
    background: linear-gradient(135deg, #27ae60 0%, #229954 100%);
    color: #fff !important;
    padding: 11px 24px;
    border-radius: 8px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 8px rgba(39, 174, 96, 0.25),
                0 0 0 0 rgba(39, 174, 96, 0.2);
    position: relative;
    overflow: hidden;
    font-weight: 600;
    font-size: 14px;
    letter-spacing: 0.3px;
    border: none;
    cursor: pointer;
    margin-left: 8px;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
    transition: left 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.cta-button::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 8px;
    padding: 1px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.3), rgba(255, 255, 255, 0.1));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.cta-button:hover {
    background: linear-gradient(135deg, #229954 0%, #1e8449 100%);
    box-shadow: 0 6px 20px rgba(39, 174, 96, 0.4),
                0 0 0 4px rgba(39, 174, 96, 0.1);
    transform: translateY(-1px);
}

.cta-button:hover::before {
    left: 100%;
}

.cta-button:hover::after {
    opacity: 1;
}

.cta-button:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(39, 174, 96, 0.3);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
}

/* ============================================
   Breadcrumb Styles
   ============================================ */
.breadcrumb {
    background: #f8f9fa;
    padding: 15px 0;
    border-bottom: 1px solid #e0e0e0;
}

.breadcrumb .container {
    display: flex;
    align-items: center;
    gap: 10px;
}

.breadcrumb a {
    color: #27ae60;
    text-decoration: none;
}

.breadcrumb .separator {
    color: #999;
}

/* ============================================
   Header Responsive Styles
   ============================================ */
@media (max-width: 768px) {
    .header {
        border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    }

    .header-content {
        padding: 0;
        min-height: 64px;
    }

    .logo a {
        font-size: 18px;
    }

    .mobile-menu-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        color: #2c3e50;
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        border-radius: 8px;
        font-size: 20px;
    }

    .mobile-menu-toggle:hover {
        background: rgba(39, 174, 96, 0.1);
        color: #27ae60;
    }

    .main-nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        border-top: 1px solid rgba(0, 0, 0, 0.06);
    }

    .main-nav.active {
        max-height: 1000px;
        padding: 16px 0;
    }

    .main-nav ul {
        flex-direction: column;
        gap: 4px;
        align-items: stretch;
        padding: 0 16px;
    }

    .main-nav ul > li {
        border-bottom: none;
    }

    .main-nav a {
        padding: 14px 16px;
        display: flex;
        border-radius: 8px;
        font-size: 15px;
    }

    .main-nav a::before {
        border-radius: 8px;
    }

    .main-nav .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        border-radius: 0;
        padding: 0;
        margin: 0;
        background: #f8f9fa;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
        min-width: auto;
        max-width: none;
        left: auto;
    }

    .main-nav .dropdown-menu::before {
        display: none;
    }

    .main-nav .dropdown.active .dropdown-menu {
        max-height: 500px;
        padding: 10px 0;
    }

    .main-nav .dropdown-menu a {
        padding: 14px 20px 14px 20px;
        border-left: none;
        flex-direction: row;
        gap: 12px;
    }

    .main-nav .dropdown-menu a::before {
        display: none;
    }

    .main-nav .dropdown-menu a::after {
        display: none;
    }

    .main-nav .dropdown-menu a .menu-icon {
        width: 36px;
        height: 36px;
        font-size: 16px;
    }

    .main-nav .dropdown-menu a:hover {
        padding-left: 20px;
        transform: none;
        background: rgba(39, 174, 96, 0.1);
    }

    .main-nav .dropdown-menu a:hover .menu-icon {
        transform: none;
    }

    .cta-button {
        margin-top: 10px;
        text-align: center;
        display: block;
    }
}