/* 導航列樣式 */
.main-nav {
    background-color: var(--background-color);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: all var(--transition-speed) ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

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

.logo a {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo-img {
    height: 50px;
    width: auto;
    margin-right: 1rem;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-cn {
    font-size: 1.5rem;
    font-weight: bold;
    color: #333;
}

.logo-en {
    font-size: 1rem;
    color: #666;
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-links li {
    margin: 0;
}

.nav-links li a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: all var(--transition-speed) ease;
}

.nav-links li a:hover {
    color: var(--secondary-color);
    background-color: rgba(74, 144, 226, 0.1);
}

/* 下拉選單樣式 */
.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    background-color: var(--background-color);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    padding: 0.5rem 0;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-speed) ease;
}

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

.dropdown-menu li {
    margin: 0;
}

.dropdown-menu a {
    display: block;
    padding: 0.8rem 1.5rem;
    color: #333;
    text-decoration: none;
    transition: all 0.3s ease;
}

.dropdown-menu a:hover {
    background-color: #f5f5f5;
    color: #c41230;
}

/* 移動端選單按鈕 */
.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* 語言切換按鈕樣式 */
.language-switch {
    margin-left: 20px;
}

.lang-btn {
    display: inline-block;
    padding: 8px 16px;
    background-color: #fff;
    color: #333;
    border: 1px solid #ddd;
    border-radius: 4px;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s ease;
}

.lang-btn:hover {
    background-color: #f5f5f5;
    border-color: #ccc;
}

/* 響應式設計 */
@media (max-width: 768px) {
    .main-nav {
        height: 60px;
    }
    
    .nav-container {
        padding: 0 1rem;
    }
    
    .logo-img {
        height: 30px;
    }
    
    .logo-cn {
        font-size: 1rem;
    }
    
    .logo-en {
        font-size: 0.7rem;
    }

    .nav-links {
        display: none;
        position: fixed;
        top: 60px;
        left: 0;
        width: 100%;
        background: #fff;
        padding: 1rem 0;
        flex-direction: column;
        gap: 0;
        box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links li {
        width: 100%;
    }

    .nav-links a {
        width: 100%;
        padding: 1rem;
        text-align: center;
    }

    .dropdown-menu {
        position: static;
        width: 100%;
        box-shadow: none;
        display: none;
    }

    .dropdown.active .dropdown-menu {
        display: block;
    }

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

    .language-switch {
        margin: 10px 0;
    }
    
    .lang-btn {
        display: block;
        text-align: center;
    }
}

/* 調整導航列和影片的間距 */
.hero {
    margin: 0;
    padding: 0;
    margin-top: 0;
    padding-top: 0;
}

.hero-video {
    margin: 0;
    padding: 0;
}

main {
    margin-top: 0;
    padding-top: 0;
}

.brand-hero {
    margin-top: 0 !important;
    padding-top: 0 !important;
}