.header {
    background: linear-gradient(90deg, #FF7A00 0%, #FF006B 100%);
    padding: 10px 0;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.12);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 25px;
}

.nav-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 5px 12px;
    border-radius: 25px;
    transition: all 0.25s ease;
    cursor: pointer;
}

.logo:hover {
    transform: translateY(-1px);
}

.logo img {
    height: 60px;
    width: auto;
    transition: all 0.3s ease;
    object-fit: contain;
    max-width: 100%;
}

.logo span {
    color: #FFFFFF;
    font-size: 17px;
    font-weight: 600;
    letter-spacing: 0.6px;
    text-transform: uppercase;
}

.top-links {
    display: flex;
    gap: 35px;
    align-items: center;
    margin-left: 45px;
}

.top-links .nav-item {
    padding: 10px 24px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 22px;
    color: #FFFFFF;
    font-size: 20px;
    font-weight: 500;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    transition: all 0.25s ease;
    position: relative;
    overflow: hidden;
}

.top-links .nav-item:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.top-links .nav-item:active {
    transform: translateY(0);
    background: rgba(255, 255, 255, 0.15);
    box-shadow: none;
}

.top-links .nav-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(120deg,
            transparent,
            rgba(255, 255, 255, 0.2),
            transparent);
    transition: 0.5s;
}

.top-links .nav-item:hover::before {
    left: 100%;
}

@media (max-width: 768px) {
    .header {
        padding: 8px 0;
    }

    .header-container {
        padding: 0 15px;
    }

    .nav-top {
        height: auto;
        flex-direction: column;
        gap: 15px;
        padding: 10px 0;
    }

    .logo {
        padding: 0;
    }

    .logo img {
        height: 50px;
    }

    .logo span {
        font-size: 15px;
    }

    .top-links {
        width: 100%;
        margin-left: 0;
        justify-content: center;
        gap: 10px;
        flex-wrap: wrap;
    }

    .top-links .nav-item {
        padding: 8px 20px;
        font-size: 14px;
        min-width: auto;
        background: rgba(255, 255, 255, 0.1);
        border: 1px solid rgba(255, 255, 255, 0.15);
    }
}

/* 更小屏幕的优化 */
@media (max-width: 480px) {
    .header-container {
        padding: 0 10px;
    }

    .nav-top {
        gap: 12px;
        padding: 10px 15px;
    }

    .logo img {
        height: 45px;
    }

    .top-links {
        gap: 8px;
    }

    .top-links .nav-item {
        padding: 6px 15px;
        font-size: 13px;
        letter-spacing: 0.3px;
    }
}

/* 导航项基础样式 */
.nav-item {
    position: relative;
    padding: 16px 40px 16px 65px;
    color: #666;
    text-decoration: none;
    font-size: 19px;
    font-weight: 500;
    border-radius: 10px;
    transition: all 0.25s ease;
    background: #f5f5f5;
    border: none;
    display: flex;
    align-items: center;
    min-width: 160px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
}

/* 悬停效果 */
.nav-item:hover {
    background: #eeeeee;
    color: #333;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
    transform: translateY(-2px);
}

/* 激活状态 */
.nav-item.active {
    background: #e8e8e8;
    color: #333;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}

/* 点击效果 */
.nav-item:active {
    transform: translateY(1px);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
}

/* 响应式调整 */
@media (max-width: 992px) {
    .logo img {
        height: 55px;
    }
}